Adding upstream version 2.1.30.upstream/2.1.30upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

56 files changed, 41281 insertions, 0 deletions

diff --git a/tests/utests/CMakeLists.txt b/tests/utests/CMakeLists.txt
new file mode 100644
index 0000000..ac47611
--- /dev/null
+++ b/tests/utests/CMakeLists.txt
@@ -0,0 +1,77 @@
+
+include_directories(${CMAKE_CURRENT_SOURCE_DIR})
+
+set(format_sources
+    ${format_sources}
+    ${CMAKE_CURRENT_SOURCE_DIR}/*.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/basic/*.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/data/*.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/extensions/*.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/schema/*.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/types/*.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/restriction/*.c
+    ${CMAKE_CURRENT_SOURCE_DIR}/node/*.c
+    PARENT_SCOPE)
+
+ly_add_utest(NAME uint8  SOURCES types/uint8.c)
+ly_add_utest(NAME uint16 SOURCES types/uint16.c)
+ly_add_utest(NAME uint32 SOURCES types/uint32.c)
+ly_add_utest(NAME uint64 SOURCES types/uint64.c)
+ly_add_utest(NAME int8   SOURCES types/int8.c)
+ly_add_utest(NAME int16  SOURCES types/int16.c)
+ly_add_utest(NAME int32  SOURCES types/int32.c)
+ly_add_utest(NAME int64  SOURCES types/int64.c)
+ly_add_utest(NAME string SOURCES types/string.c)
+ly_add_utest(NAME bits   SOURCES types/bits.c)
+ly_add_utest(NAME binary SOURCES types/binary.c)
+ly_add_utest(NAME inet_types   SOURCES types/inet_types.c)
+ly_add_utest(NAME yang_types   SOURCES types/yang_types.c)
+ly_add_utest(NAME enumeration  SOURCES types/enumeration.c)
+ly_add_utest(NAME instanceid   SOURCES types/instanceid.c)
+ly_add_utest(NAME instanceid_keys   SOURCES types/instanceid_keys.c)
+ly_add_utest(NAME union        SOURCES types/union.c)
+ly_add_utest(NAME boolean      SOURCES types/boolean.c)
+ly_add_utest(NAME decimal64    SOURCES types/decimal64.c)
+ly_add_utest(NAME empty        SOURCES types/empty.c)
+ly_add_utest(NAME identityref  SOURCES types/identityref.c)
+ly_add_utest(NAME leafref      SOURCES types/leafref.c)
+
+ly_add_utest(NAME range  SOURCES restriction/test_range.c)
+ly_add_utest(NAME pattern  SOURCES restriction/test_pattern.c)
+
+ly_add_utest(NAME list  SOURCES node/list.c)
+
+ly_add_utest(NAME common SOURCES basic/test_common.c)
+ly_add_utest(NAME set SOURCES basic/test_set.c)
+ly_add_utest(NAME hash_table SOURCES basic/test_hash_table.c)
+ly_add_utest(NAME inout SOURCES basic/test_inout.c)
+ly_add_utest(NAME context SOURCES basic/test_context.c)
+if(NOT WIN32)
+ly_add_utest(NAME plugins SOURCES basic/test_plugins.c)
+endif()
+ly_add_utest(NAME xml SOURCES basic/test_xml.c)
+ly_add_utest(NAME json SOURCES basic/test_json.c)
+ly_add_utest(NAME xpath SOURCES basic/test_xpath.c)
+ly_add_utest(NAME yanglib SOURCES basic/test_yanglib.c)
+
+ly_add_utest(NAME schema SOURCES schema/test_schema.c)
+ly_add_utest(NAME yang SOURCES schema/test_yang.c)
+ly_add_utest(NAME yin SOURCES schema/test_yin.c)
+ly_add_utest(NAME tree_schema_compile SOURCES schema/test_tree_schema_compile.c)
+ly_add_utest(NAME printer_tree SOURCES schema/test_printer_tree.c)
+
+ly_add_utest(NAME tree_data SOURCES data/test_tree_data.c)
+ly_add_utest(NAME new SOURCES data/test_new.c)
+ly_add_utest(NAME parser_xml SOURCES data/test_parser_xml.c)
+ly_add_utest(NAME printer_xml SOURCES data/test_printer_xml.c)
+ly_add_utest(NAME parser_json SOURCES data/test_parser_json.c)
+ly_add_utest(NAME lyb SOURCES data/test_lyb.c)
+ly_add_utest(NAME validation SOURCES data/test_validation.c)
+ly_add_utest(NAME merge SOURCES data/test_merge.c)
+ly_add_utest(NAME diff SOURCES data/test_diff.c)
+
+ly_add_utest(NAME metadata SOURCES extensions/test_metadata.c)
+ly_add_utest(NAME nacm SOURCES extensions/test_nacm.c)
+ly_add_utest(NAME yangdata SOURCES extensions/test_yangdata.c)
+ly_add_utest(NAME schema_mount SOURCES extensions/test_schema_mount.c)
+ly_add_utest(NAME structure SOURCES extensions/test_structure.c)
diff --git a/tests/utests/basic/test_common.c b/tests/utests/basic/test_common.c
new file mode 100644
index 0000000..75235a2
--- /dev/null
+++ b/tests/utests/basic/test_common.c
@@ -0,0 +1,416 @@
+/*
+ * @file test_common.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for functions from common.c
+ *
+ * Copyright (c) 2018 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "common.h"
+
+static void
+test_utf8(void **UNUSED(state))
+{
+    char buf[5] = {0};
+    const char *str = buf;
+    unsigned int c;
+    size_t len;
+
+    /* test invalid UTF-8 characters in lyxml_getutf8
+     * - https://en.wikipedia.org/wiki/UTF-8 */
+    buf[0] = (char)0x04;
+    assert_int_equal(LY_EINVAL, ly_getutf8(&str, &c, &len));
+    buf[0] = (char)0x80;
+    assert_int_equal(LY_EINVAL, ly_getutf8(&str, &c, &len));
+
+    buf[0] = (char)0xc0;
+    buf[1] = (char)0x00;
+    assert_int_equal(LY_EINVAL, ly_getutf8(&str, &c, &len));
+    buf[1] = (char)0x80;
+    assert_int_equal(LY_EINVAL, ly_getutf8(&str, &c, &len));
+
+    buf[0] = (char)0xe0;
+    buf[1] = (char)0x00;
+    buf[2] = (char)0x80;
+    assert_int_equal(LY_EINVAL, ly_getutf8(&str, &c, &len));
+    buf[1] = (char)0x80;
+    assert_int_equal(LY_EINVAL, ly_getutf8(&str, &c, &len));
+
+    buf[0] = (char)0xf0;
+    buf[1] = (char)0x00;
+    buf[2] = (char)0x80;
+    buf[3] = (char)0x80;
+    assert_int_equal(LY_EINVAL, ly_getutf8(&str, &c, &len));
+    buf[1] = (char)0x80;
+    assert_int_equal(LY_EINVAL, ly_getutf8(&str, &c, &len));
+}
+
+static void
+test_parse_int(void **UNUSED(state))
+{
+    const char *str;
+    int64_t i = 500;
+
+    str = "10";
+    assert_int_equal(LY_SUCCESS, ly_parse_int(str, strlen(str), -10, 10, 10, &i));
+    assert_int_equal(i, 10);
+
+    /* leading zeros are allowed, trailing whitespaces are allowed */
+    str = "000\n\t  ";
+    assert_int_equal(LY_SUCCESS, ly_parse_int(str, strlen(str), -10, 10, 10, &i));
+    assert_int_equal(i, 0);
+
+    /* negative value */
+    str = "-10";
+    assert_int_equal(LY_SUCCESS, ly_parse_int(str, strlen(str), -10, 10, 10, &i));
+    assert_int_equal(i, -10);
+
+    /* non-NULL terminated string */
+    str = "+5sometext";
+    assert_int_equal(LY_SUCCESS, ly_parse_int(str, 2, -10, 10, 10, &i));
+    assert_int_equal(i, 5);
+
+    /* out of bounds value */
+    str = "11";
+    assert_int_equal(LY_EDENIED, ly_parse_int(str, strlen(str), -10, 10, 10, &i));
+    str = "-11";
+    assert_int_equal(LY_EDENIED, ly_parse_int(str, strlen(str), -10, 10, 10, &i));
+
+    /* NaN */
+    str = "zero";
+    assert_int_equal(LY_EVALID, ly_parse_int(str, strlen(str), -10, 10, 10, &i));
+
+    /* mixing number with text */
+    str = "10zero";
+    assert_int_equal(LY_EVALID, ly_parse_int(str, strlen(str), -10, 10, 10, &i));
+
+    str = "10  zero";
+    assert_int_equal(LY_EVALID, ly_parse_int(str, strlen(str), -10, 10, 10, &i));
+}
+
+static void
+test_parse_uint(void **UNUSED(state))
+{
+    const char *str;
+    uint64_t u = 500;
+
+    str = "10";
+    assert_int_equal(LY_SUCCESS, ly_parse_uint(str, strlen(str), 10, 10, &u));
+    assert_int_equal(u, 10);
+
+    /* leading zeros are allowed, trailing whitespaces are allowed */
+    str = "000\n\t  ";
+    assert_int_equal(LY_SUCCESS, ly_parse_uint(str, strlen(str), 10, 10, &u));
+    assert_int_equal(u, 0);
+    /* non-NULL terminated string */
+    str = "+5sometext";
+    assert_int_equal(LY_SUCCESS, ly_parse_uint(str, 2, 10, 10, &u));
+    assert_int_equal(u, 5);
+
+    /* out of bounds value */
+    str = "11";
+    assert_int_equal(LY_EDENIED, ly_parse_uint(str, strlen(str), 10, 10, &u));
+    str = "-1";
+    assert_int_equal(LY_EDENIED, ly_parse_uint(str, strlen(str), (uint64_t)-1, 10, &u));
+
+    /* NaN */
+    str = "zero";
+    assert_int_equal(LY_EVALID, ly_parse_uint(str, strlen(str), 10, 10, &u));
+
+    /* mixing number with text */
+    str = "10zero";
+    assert_int_equal(LY_EVALID, ly_parse_uint(str, strlen(str), 10, 10, &u));
+
+    str = "10  zero";
+    assert_int_equal(LY_EVALID, ly_parse_uint(str, strlen(str), 10, 10, &u));
+}
+
+static void
+test_parse_nodeid(void **UNUSED(state))
+{
+    const char *str;
+    const char *prefix, *name;
+    size_t prefix_len, name_len;
+
+    str = "123";
+    assert_int_equal(LY_EINVAL, ly_parse_nodeid(&str, &prefix, &prefix_len, &name, &name_len));
+
+    str = "a12_-.!";
+    assert_int_equal(LY_SUCCESS, ly_parse_nodeid(&str, &prefix, &prefix_len, &name, &name_len));
+    assert_null(prefix);
+    assert_int_equal(0, prefix_len);
+    assert_non_null(name);
+    assert_int_equal(6, name_len);
+    assert_int_equal(0, strncmp("a12_-.", name, name_len));
+    assert_string_equal("!", str);
+
+    str = "a12_-.:_b2 xxx";
+    assert_int_equal(LY_SUCCESS, ly_parse_nodeid(&str, &prefix, &prefix_len, &name, &name_len));
+    assert_non_null(prefix);
+    assert_int_equal(6, prefix_len);
+    assert_int_equal(0, strncmp("a12_-.", prefix, prefix_len));
+    assert_non_null(name);
+    assert_int_equal(3, name_len);
+    assert_int_equal(0, strncmp("_b2", name, name_len));
+    assert_string_equal(" xxx", str);
+}
+
+static void
+test_parse_instance_predicate(void **UNUSED(state))
+{
+    const char *str, *errmsg;
+    const char *prefix, *id, *value;
+    size_t prefix_len, id_len, value_len;
+
+    str = "[ex:name='fred']";
+    assert_int_equal(LY_SUCCESS, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(str, "");
+    assert_string_equal(prefix, "ex:name='fred']");
+    assert_int_equal(prefix_len, 2);
+    assert_string_equal(id, "name='fred']");
+    assert_int_equal(id_len, 4);
+    assert_string_equal(value, "fred']");
+    assert_int_equal(value_len, 4);
+
+    str = "[ex:ip = \"[192.0.2.1]\"][ex:port='80']";
+    assert_int_equal(LY_SUCCESS, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(str, "[ex:port='80']");
+    assert_string_equal(prefix, "ex:ip = \"[192.0.2.1]\"][ex:port='80']");
+    assert_int_equal(prefix_len, 2);
+    assert_string_equal(id, "ip = \"[192.0.2.1]\"][ex:port='80']");
+    assert_int_equal(id_len, 2);
+    assert_string_equal(value, "[192.0.2.1]\"][ex:port='80']");
+    assert_int_equal(value_len, 11);
+
+    str = "[. = 'blowfish-cbc']";
+    assert_int_equal(LY_SUCCESS, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(str, "");
+    assert_null(prefix);
+    assert_int_equal(prefix_len, 0);
+    assert_string_equal(id, ". = 'blowfish-cbc']");
+    assert_int_equal(id_len, 1);
+    assert_string_equal(value, "blowfish-cbc']");
+    assert_int_equal(value_len, 12);
+
+    str = "[ 3 ]";
+    assert_int_equal(LY_SUCCESS, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(str, "");
+    assert_null(prefix);
+    assert_int_equal(prefix_len, 0);
+    assert_null(id);
+    assert_int_equal(id_len, 0);
+    assert_string_equal(value, "3 ]");
+    assert_int_equal(value_len, 1);
+
+    /* invalid predicates */
+    /* position must be positive integer */
+    str = "[0]";
+    assert_int_equal(LY_EVALID, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(errmsg, "The position predicate cannot be zero.");
+    str = "[-1]";
+    assert_int_equal(LY_EVALID, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(errmsg, "Invalid instance predicate format (negative position or invalid node-identifier).");
+
+    /* invalid node-identifier */
+    str = "[$node='value']";
+    assert_int_equal(LY_EVALID, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(errmsg, "Invalid node-identifier.");
+    str = "[.node='value']";
+    assert_int_equal(LY_EVALID, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(errmsg, "Unexpected character instead of '=' in leaf-list-predicate.");
+    str = "[13node='value']";
+    assert_int_equal(LY_EVALID, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(errmsg, "Predicate (pos) is not terminated by \']\' character.");
+
+    str = "[ex:node]";
+    assert_int_equal(LY_EVALID, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(errmsg, "Unexpected character instead of '=' in key-predicate.");
+
+    str = "[ex:node=  value]";
+    assert_int_equal(LY_EVALID, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(errmsg, "String value is not quoted.");
+
+    str = "[ex:node='value\"]";
+    assert_int_equal(LY_EVALID, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(errmsg, "Value is not terminated quoted-string.");
+
+    str = "[ex:node='value  ]";
+    assert_int_equal(LY_EVALID, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(errmsg, "Value is not terminated quoted-string.");
+
+    str = "[ex:node=\"value\"[3]";
+    assert_int_equal(LY_EVALID, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(errmsg, "Predicate (key-predicate) is not terminated by \']\' character.");
+    str = "[.=\"value\"[3]";
+    assert_int_equal(LY_EVALID, ly_parse_instance_predicate(&str, strlen(str), LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(errmsg, "Predicate (leaf-list-predicate) is not terminated by \']\' character.");
+
+    /* the limit of the string is too short, it ends one character earlier */
+    str = "[ex:node='value']";
+    assert_int_equal(LY_EINVAL, ly_parse_instance_predicate(&str, strlen(str) - 1, LYD_XML, &prefix, &prefix_len, &id, &id_len, &value, &value_len, &errmsg));
+    assert_string_equal(errmsg, "Predicate is incomplete.");
+}
+
+static void
+test_value_prefix_next(void **UNUSED(state))
+{
+    const char *next;
+    ly_bool is_prefix;
+    uint32_t bytes;
+
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(NULL, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(0, bytes);
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next("", NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(0, bytes);
+
+    /* prefix */
+    next = "pref:";
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_null(next);
+    assert_int_equal(1, is_prefix);
+
+    /* no-prefix */
+    next = "node";
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_null(next);
+    assert_int_equal(0, is_prefix);
+
+    /* no-prefix */
+    next = "::::";
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_null(next);
+    assert_int_equal(0, is_prefix);
+
+    /* no-prefix */
+    next = "//a/:";
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(5, bytes);
+    assert_null(next);
+    assert_int_equal(0, is_prefix);
+
+    /* no-prefix */
+    next = "//a//";
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(5, bytes);
+    assert_null(next);
+    assert_int_equal(0, is_prefix);
+
+    /* prefix, prefix */
+    next = "pref1:pref2:";
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(5, bytes);
+    assert_string_equal(next, "pref2:");
+    assert_int_equal(1, is_prefix);
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(5, bytes);
+    assert_null(next);
+    assert_int_equal(1, is_prefix);
+
+    /* prefix, no-prefix */
+    next = "pref:node";
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_string_equal(next, "node");
+    assert_int_equal(1, is_prefix);
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_null(next);
+    assert_int_equal(0, is_prefix);
+
+    /* no-prefix, prefix */
+    next = "/pref:";
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(1, bytes);
+    assert_string_equal(next, "pref:");
+    assert_int_equal(0, is_prefix);
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_null(next);
+    assert_int_equal(1, is_prefix);
+
+    /* no-prefix, prefix */
+    next = "//pref:";
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(2, bytes);
+    assert_string_equal(next, "pref:");
+    assert_int_equal(0, is_prefix);
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_null(next);
+    assert_int_equal(1, is_prefix);
+
+    /* no-prefix, prefix, no-prefix */
+    next = "/pref:node";
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(1, bytes);
+    assert_string_equal(next, "pref:node");
+    assert_int_equal(0, is_prefix);
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_string_equal(next, "node");
+    assert_int_equal(1, is_prefix);
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_null(next);
+    assert_int_equal(0, is_prefix);
+
+    /* prefix, no-prefix, prefix */
+    next = "pref:node pref:";
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_string_equal(next, "node pref:");
+    assert_int_equal(1, is_prefix);
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(5, bytes);
+    assert_string_equal(next, "pref:");
+    assert_int_equal(0, is_prefix);
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_null(next);
+    assert_int_equal(1, is_prefix);
+
+    /* prefix, no-prefix, prefix, no-prefix */
+    next = "pref:node /pref:node";
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_string_equal(next, "node /pref:node");
+    assert_int_equal(1, is_prefix);
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(6, bytes);
+    assert_string_equal(next, "pref:node");
+    assert_int_equal(0, is_prefix);
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_string_equal(next, "node");
+    assert_int_equal(1, is_prefix);
+    assert_int_equal(LY_SUCCESS, ly_value_prefix_next(next, NULL, &bytes, &is_prefix, &next));
+    assert_int_equal(4, bytes);
+    assert_null(next);
+    assert_int_equal(0, is_prefix);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_utf8),
+        UTEST(test_parse_int),
+        UTEST(test_parse_uint),
+        UTEST(test_parse_nodeid),
+        UTEST(test_parse_instance_predicate),
+        UTEST(test_value_prefix_next),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/basic/test_context.c b/tests/utests/basic/test_context.c
new file mode 100644
index 0000000..4c4cc3f
--- /dev/null
+++ b/tests/utests/basic/test_context.c
@@ -0,0 +1,1087 @@
+/*
+ * @file test_context.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for functions from context.c
+ *
+ * Copyright (c) 2018 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "common.h"
+#include "context.h"
+#include "in.h"
+#include "schema_compile.h"
+#include "tests_config.h"
+#include "tree_schema_internal.h"
+#ifdef _WIN32
+static void
+slashes_to_backslashes(char *path)
+{
+    while ((path = strchr(path, '/'))) {
+        *path++ = '\\';
+    }
+}
+
+static void
+test_searchdirs(void **state)
+{
+    const char * const *list;
+    char *path1 = strdup(TESTS_BIN "/utests");
+    char *path2 = strdup(TESTS_SRC);
+
+    slashes_to_backslashes(path1);
+    slashes_to_backslashes(path2);
+
+    assert_int_equal(LY_EINVAL, ly_ctx_set_searchdir(NULL, NULL));
+    CHECK_LOG("Invalid argument ctx (ly_ctx_set_searchdir()).", NULL);
+    assert_null(ly_ctx_get_searchdirs(NULL));
+    CHECK_LOG("Invalid argument ctx (ly_ctx_get_searchdirs()).", NULL);
+    assert_int_equal(LY_EINVAL, ly_ctx_unset_searchdir(NULL, NULL));
+    CHECK_LOG("Invalid argument ctx (ly_ctx_unset_searchdir()).", NULL);
+
+    /* correct path */
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, path1));
+    assert_int_equal(1, UTEST_LYCTX->search_paths.count);
+    assert_string_equal(path1, UTEST_LYCTX->search_paths.objs[0]);
+
+    /* duplicated paths */
+    assert_int_equal(LY_EEXIST, ly_ctx_set_searchdir(UTEST_LYCTX, path1));
+    assert_int_equal(1, UTEST_LYCTX->search_paths.count);
+    assert_string_equal(path1, UTEST_LYCTX->search_paths.objs[0]);
+
+    /* another path */
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, path2));
+    assert_int_equal(2, UTEST_LYCTX->search_paths.count);
+    assert_string_equal(path2, UTEST_LYCTX->search_paths.objs[1]);
+
+    /* get searchpaths */
+    list = ly_ctx_get_searchdirs(UTEST_LYCTX);
+    assert_non_null(list);
+    assert_string_equal(path1, list[0]);
+    assert_string_equal(path2, list[1]);
+    assert_null(list[2]);
+
+    /* removing searchpaths */
+    /* nonexisting */
+    assert_int_equal(LY_EINVAL, ly_ctx_unset_searchdir(UTEST_LYCTX, "/nonexistingfile"));
+    CHECK_LOG_CTX("Invalid argument value (ly_ctx_unset_searchdir()).", NULL);
+
+    /* first */
+    assert_int_equal(LY_SUCCESS, ly_ctx_unset_searchdir(UTEST_LYCTX, path1));
+    assert_int_equal(1, UTEST_LYCTX->search_paths.count);
+    assert_string_not_equal(path1, list[0]);
+
+    /* second */
+    assert_int_equal(LY_SUCCESS, ly_ctx_unset_searchdir(UTEST_LYCTX, path2));
+    assert_int_equal(0, UTEST_LYCTX->search_paths.count);
+
+    free(path1);
+    free(path2);
+}
+
+#else
+
+static void
+test_searchdirs(void **state)
+{
+    const char * const *list;
+
+    /* invalid arguments */
+    assert_int_equal(LY_EINVAL, ly_ctx_set_searchdir(NULL, NULL));
+    CHECK_LOG("Invalid argument ctx (ly_ctx_set_searchdir()).", NULL);
+    assert_null(ly_ctx_get_searchdirs(NULL));
+    CHECK_LOG("Invalid argument ctx (ly_ctx_get_searchdirs()).", NULL);
+    assert_int_equal(LY_EINVAL, ly_ctx_unset_searchdir(NULL, NULL));
+    CHECK_LOG("Invalid argument ctx (ly_ctx_unset_searchdir()).", NULL);
+
+    /* readable and executable, but not a directory */
+    assert_int_equal(LY_EINVAL, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_BIN "/utest_context"));
+    CHECK_LOG_CTX("Given search directory \""TESTS_BIN "/utest_context\" is not a directory.", NULL);
+    /* not existing */
+    assert_int_equal(LY_EINVAL, ly_ctx_set_searchdir(UTEST_LYCTX, "/nonexistingfile"));
+    CHECK_LOG_CTX("Unable to use search directory \"/nonexistingfile\" (No such file or directory).", NULL);
+
+    /* ly_set_add() fails */
+    /* no change */
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, NULL));
+
+    /* correct path */
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_BIN "/utests"));
+    assert_int_equal(1, UTEST_LYCTX->search_paths.count);
+    assert_string_equal(TESTS_BIN "/utests", UTEST_LYCTX->search_paths.objs[0]);
+
+    /* duplicated paths */
+    assert_int_equal(LY_EEXIST, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_BIN "/utests"));
+    assert_int_equal(1, UTEST_LYCTX->search_paths.count);
+    assert_string_equal(TESTS_BIN "/utests", UTEST_LYCTX->search_paths.objs[0]);
+
+    /* another paths - add 8 to fill the initial buffer of the searchpaths list */
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_BIN "/CMakeFiles"));
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_SRC "/../src"));
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_SRC "/../CMakeModules"));
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_SRC "/../doc"));
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_SRC));
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_BIN));
+    assert_int_equal(7, UTEST_LYCTX->search_paths.count);
+
+    /* get searchpaths */
+    list = ly_ctx_get_searchdirs(UTEST_LYCTX);
+    assert_non_null(list);
+    assert_string_equal(TESTS_BIN "/utests", list[0]);
+    assert_string_equal(TESTS_BIN "/CMakeFiles", list[1]);
+    assert_string_equal(TESTS_SRC, list[5]);
+    assert_string_equal(TESTS_BIN, list[6]);
+    assert_null(list[7]);
+
+    /* removing searchpaths */
+    /* nonexisting */
+    assert_int_equal(LY_EINVAL, ly_ctx_unset_searchdir(UTEST_LYCTX, "/nonexistingfile"));
+    CHECK_LOG_CTX("Invalid argument value (ly_ctx_unset_searchdir()).", NULL);
+    /* first */
+    assert_int_equal(LY_SUCCESS, ly_ctx_unset_searchdir(UTEST_LYCTX, TESTS_BIN "/utests"));
+    assert_string_not_equal(TESTS_BIN "/utests", list[0]);
+    assert_int_equal(6, UTEST_LYCTX->search_paths.count);
+    /* middle */
+    assert_int_equal(LY_SUCCESS, ly_ctx_unset_searchdir(UTEST_LYCTX, TESTS_SRC));
+    assert_int_equal(5, UTEST_LYCTX->search_paths.count);
+    /* last */
+    assert_int_equal(LY_SUCCESS, ly_ctx_unset_searchdir(UTEST_LYCTX, TESTS_BIN));
+    assert_int_equal(4, UTEST_LYCTX->search_paths.count);
+    /* all */
+    assert_int_equal(LY_SUCCESS, ly_ctx_unset_searchdir(UTEST_LYCTX, NULL));
+    assert_int_equal(0, UTEST_LYCTX->search_paths.count);
+
+    /* again - no change */
+    assert_int_equal(LY_SUCCESS, ly_ctx_unset_searchdir(UTEST_LYCTX, NULL));
+
+    /* cleanup */
+    ly_ctx_destroy(UTEST_LYCTX);
+
+    /* test searchdir list in ly_ctx_new() */
+    assert_int_equal(LY_EINVAL, ly_ctx_new("/nonexistingfile", 0, &UTEST_LYCTX));
+    CHECK_LOG("Unable to use search directory \"/nonexistingfile\" (No such file or directory).", NULL);
+    assert_int_equal(LY_SUCCESS,
+            ly_ctx_new(TESTS_SRC PATH_SEPARATOR TESTS_BIN PATH_SEPARATOR TESTS_BIN PATH_SEPARATOR TESTS_SRC,
+            LY_CTX_DISABLE_SEARCHDIRS, &UTEST_LYCTX));
+    assert_int_equal(2, UTEST_LYCTX->search_paths.count);
+    assert_string_equal(TESTS_SRC, UTEST_LYCTX->search_paths.objs[0]);
+    assert_string_equal(TESTS_BIN, UTEST_LYCTX->search_paths.objs[1]);
+}
+
+#endif
+
+static void
+test_options(void **state)
+{
+    /* use own context with extra flags */
+    ly_ctx_destroy(UTEST_LYCTX);
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_new(NULL, 0xffff, &UTEST_LYCTX));
+
+    /* invalid arguments */
+    assert_int_equal(0, ly_ctx_get_options(NULL));
+    CHECK_LOG("Invalid argument ctx (ly_ctx_get_options()).", NULL);
+
+    assert_int_equal(LY_EINVAL, ly_ctx_set_options(NULL, 0));
+    CHECK_LOG("Invalid argument ctx (ly_ctx_set_options()).", NULL);
+    assert_int_equal(LY_EINVAL, ly_ctx_unset_options(NULL, 0));
+    CHECK_LOG("Invalid argument ctx (ly_ctx_unset_options()).", NULL);
+
+    /* unset */
+    /* LY_CTX_ALL_IMPLEMENTED */
+    assert_int_not_equal(0, UTEST_LYCTX->flags & LY_CTX_ALL_IMPLEMENTED);
+    assert_int_equal(LY_SUCCESS, ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_ALL_IMPLEMENTED));
+    assert_int_equal(0, UTEST_LYCTX->flags & LY_CTX_ALL_IMPLEMENTED);
+
+    /* LY_CTX_REF_IMPLEMENTED */
+    assert_int_not_equal(0, UTEST_LYCTX->flags & LY_CTX_REF_IMPLEMENTED);
+    assert_int_equal(LY_SUCCESS, ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_REF_IMPLEMENTED));
+    assert_int_equal(0, UTEST_LYCTX->flags & LY_CTX_REF_IMPLEMENTED);
+
+    /* LY_CTX_DISABLE_SEARCHDIRS */
+    assert_int_not_equal(0, UTEST_LYCTX->flags & LY_CTX_DISABLE_SEARCHDIRS);
+    assert_int_equal(LY_SUCCESS, ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_DISABLE_SEARCHDIRS));
+    assert_int_equal(0, UTEST_LYCTX->flags & LY_CTX_DISABLE_SEARCHDIRS);
+
+    /* LY_CTX_DISABLE_SEARCHDIR_CWD */
+    assert_int_not_equal(0, UTEST_LYCTX->flags & LY_CTX_DISABLE_SEARCHDIR_CWD);
+    assert_int_equal(LY_SUCCESS, ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_DISABLE_SEARCHDIR_CWD));
+    assert_int_equal(0, UTEST_LYCTX->flags & LY_CTX_DISABLE_SEARCHDIR_CWD);
+
+    /* LY_CTX_PREFER_SEARCHDIRS */
+    assert_int_not_equal(0, UTEST_LYCTX->flags & LY_CTX_PREFER_SEARCHDIRS);
+    assert_int_equal(LY_SUCCESS, ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_PREFER_SEARCHDIRS));
+    assert_int_equal(0, UTEST_LYCTX->flags & LY_CTX_PREFER_SEARCHDIRS);
+
+    assert_int_equal(UTEST_LYCTX->flags, ly_ctx_get_options(UTEST_LYCTX));
+
+    /* set back */
+    /* LY_CTX_ALL_IMPLEMENTED */
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_options(UTEST_LYCTX, LY_CTX_ALL_IMPLEMENTED));
+    assert_int_not_equal(0, UTEST_LYCTX->flags & LY_CTX_ALL_IMPLEMENTED);
+
+    /* LY_CTX_REF_IMPLEMENTED */
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_options(UTEST_LYCTX, LY_CTX_REF_IMPLEMENTED));
+    assert_int_not_equal(0, UTEST_LYCTX->flags & LY_CTX_REF_IMPLEMENTED);
+
+    /* LY_CTX_DISABLE_SEARCHDIRS */
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_options(UTEST_LYCTX, LY_CTX_DISABLE_SEARCHDIRS));
+    assert_int_not_equal(0, UTEST_LYCTX->flags & LY_CTX_DISABLE_SEARCHDIRS);
+
+    /* LY_CTX_DISABLE_SEARCHDIR_CWD */
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_options(UTEST_LYCTX, LY_CTX_DISABLE_SEARCHDIR_CWD));
+    assert_int_not_equal(0, UTEST_LYCTX->flags & LY_CTX_DISABLE_SEARCHDIR_CWD);
+
+    /* LY_CTX_PREFER_SEARCHDIRS */
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_options(UTEST_LYCTX, LY_CTX_PREFER_SEARCHDIRS));
+    assert_int_not_equal(0, UTEST_LYCTX->flags & LY_CTX_PREFER_SEARCHDIRS);
+
+    assert_int_equal(UTEST_LYCTX->flags, ly_ctx_get_options(UTEST_LYCTX));
+}
+
+static LY_ERR
+test_imp_clb(const char *UNUSED(mod_name), const char *UNUSED(mod_rev), const char *UNUSED(submod_name),
+        const char *UNUSED(sub_rev), void *user_data, LYS_INFORMAT *format,
+        const char **module_data, void (**free_module_data)(void *model_data, void *user_data))
+{
+    *module_data = user_data;
+    *format = LYS_IN_YANG;
+    *free_module_data = NULL;
+    return LY_SUCCESS;
+}
+
+static void
+test_models(void **state)
+{
+    struct ly_in *in;
+    const char *str;
+    struct lys_module *mod1, *mod2;
+    struct lys_glob_unres unres = {0};
+
+    /* use own context with extra flags */
+    ly_ctx_destroy(UTEST_LYCTX);
+
+    /* invalid arguments */
+    assert_int_equal(0, ly_ctx_get_change_count(NULL));
+    CHECK_LOG("Invalid argument ctx (ly_ctx_get_change_count()).", NULL);
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_new(NULL, LY_CTX_DISABLE_SEARCHDIRS, &UTEST_LYCTX));
+    assert_int_equal(UTEST_LYCTX->change_count, ly_ctx_get_change_count(UTEST_LYCTX));
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("module x {namespace urn:x;prefix x;}", &in));
+    assert_int_equal(LY_EINVAL, lys_parse_in(UTEST_LYCTX, in, 4, NULL, NULL, &unres.creating, &mod1));
+    lys_unres_glob_erase(&unres);
+    ly_in_free(in, 0);
+    CHECK_LOG_CTX("Invalid schema input format.", NULL);
+
+    /* import callback */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, (void *)(str = "test"));
+    assert_ptr_equal(test_imp_clb, UTEST_LYCTX->imp_clb);
+    assert_ptr_equal(str, UTEST_LYCTX->imp_clb_data);
+    assert_ptr_equal(test_imp_clb, ly_ctx_get_module_imp_clb(UTEST_LYCTX, (void **)&str));
+    assert_string_equal("test", str);
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, NULL, NULL);
+    assert_null(UTEST_LYCTX->imp_clb);
+    assert_null(UTEST_LYCTX->imp_clb_data);
+
+    /* name collision of module and submodule */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule y {belongs-to a {prefix a;} revision 2018-10-30;}");
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("module y {namespace urn:y;prefix y;include y;}", &in));
+    assert_int_equal(LY_EVALID, lys_parse_in(UTEST_LYCTX, in, LYS_IN_YANG, NULL, NULL, &unres.creating, &mod1));
+    lys_unres_glob_erase(&unres);
+    ly_in_free(in, 0);
+    CHECK_LOG_CTX("Parsing module \"y\" failed.", NULL,
+            "Name collision between module and submodule of name \"y\".", "Line number 1.");
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("module a {namespace urn:a;prefix a;include y;revision 2018-10-30; }", &in));
+    assert_int_equal(LY_SUCCESS, lys_parse_in(UTEST_LYCTX, in, LYS_IN_YANG, NULL, NULL, &unres.creating, &mod1));
+    ly_in_free(in, 0);
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("module y {namespace urn:y;prefix y;}", &in));
+    assert_int_equal(LY_EVALID, lys_parse_in(UTEST_LYCTX, in, LYS_IN_YANG, NULL, NULL, &unres.creating, &mod1));
+    lys_unres_glob_erase(&unres);
+    ly_in_free(in, 0);
+    CHECK_LOG_CTX("Parsing module \"y\" failed.", NULL,
+            "Name collision between module and submodule of name \"y\".", "Line number 1.");
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule y {belongs-to b {prefix b;}}");
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("module b {namespace urn:b;prefix b;include y;}", &in));
+    assert_int_equal(LY_EVALID, lys_parse_in(UTEST_LYCTX, in, LYS_IN_YANG, NULL, NULL, &unres.creating, &mod1));
+    lys_unres_glob_revert(UTEST_LYCTX, &unres);
+    lys_unres_glob_erase(&unres);
+    ly_in_free(in, 0);
+    CHECK_LOG_CTX("Parsing module \"b\" failed.", NULL,
+            "Including \"y\" submodule into \"b\" failed.", NULL,
+            "Parsing submodule failed.", NULL,
+            "Name collision between submodules of name \"y\".", "Line number 1.");
+
+    /* selecting correct revision of the submodules */
+    ly_ctx_reset_latests(UTEST_LYCTX);
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule y {belongs-to a {prefix a;} revision 2018-10-31;}");
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("module a {namespace urn:a;prefix a;include y; revision 2018-10-31;}", &in));
+    assert_int_equal(LY_SUCCESS, lys_parse_in(UTEST_LYCTX, in, LYS_IN_YANG, NULL, NULL, &unres.creating, &mod2));
+    lys_unres_glob_erase(&unres);
+    ly_in_free(in, 0);
+    assert_string_equal("2018-10-31", mod2->parsed->includes[0].submodule->revs[0].date);
+
+    /* reloading module in case only the compiled module resists in the context */
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("module w {namespace urn:w;prefix w;revision 2018-10-24;}", &in));
+    assert_int_equal(LY_SUCCESS, lys_parse(UTEST_LYCTX, in, LYS_IN_YANG, NULL, &mod1));
+    ly_in_free(in, 0);
+    assert_non_null(mod1->compiled);
+    assert_non_null(mod1->parsed);
+
+#if 0
+    /* TODO in case we are able to remove the parsed schema, here we will test how it will handle missing import parsed schema */
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("module z {namespace urn:z;prefix z;import w {prefix w;revision-date 2018-10-24;}}", &in));
+    /* mod1->parsed is necessary to compile mod2 because of possible groupings, typedefs, ... */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, NULL, NULL);
+    assert_int_equal(LY_ENOTFOUND, lys_create_module(UTEST_LYCTX, in, LYS_IN_YANG, 1, NULL, NULL, &mod2));
+    /*logbuf_assert("Unable to reload \"w\" module to import it into \"z\", source data not found.");*/
+    CHECK_LOG_CTX("Recompilation of module \"w\" failed.", NULL);
+    assert_null(mod2);
+    ly_in_free(in, 0);
+#endif
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("module z {namespace urn:z;prefix z;import w {prefix w;revision-date 2018-10-24;}}", &in));
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module w {namespace urn:w;prefix w;revision 2018-10-24;}");
+    assert_int_equal(LY_SUCCESS, lys_parse(UTEST_LYCTX, in, LYS_IN_YANG, NULL, &mod2));
+    ly_in_free(in, 0);
+    assert_non_null(mod2);
+    assert_non_null(mod1->parsed);
+    assert_string_equal("w", mod1->name);
+}
+
+static void
+test_imports(void **state)
+{
+    struct lys_module *mod1, *mod2, *mod3, *import;
+    char *str;
+    uint16_t ctx_options;
+
+    /* use own context with extra flags */
+    ly_ctx_destroy(UTEST_LYCTX);
+    ctx_options = LY_CTX_DISABLE_SEARCHDIRS | LY_CTX_NO_YANGLIBRARY;
+
+    /* Import callback provides newer revision of module 'a',
+     * however the older revision is implemented soon and therefore it is preferred. */
+    assert_int_equal(LY_SUCCESS, ly_ctx_new(NULL, ctx_options, &UTEST_LYCTX));
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module a {namespace urn:a; prefix a; revision 2019-09-17;}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a;revision 2019-09-16;}",
+            LYS_IN_YANG, &mod1));
+    assert_true(LYS_MOD_LATEST_REV & mod1->latest_revision);
+    assert_int_equal(1, mod1->implemented);
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b;import a {prefix a;}}",
+            LYS_IN_YANG, &mod2));
+    assert_ptr_equal(mod1, mod2->parsed->imports[0].module);
+    assert_true((LYS_MOD_LATEST_REV | LYS_MOD_IMPORTED_REV) & mod1->latest_revision);
+    assert_string_equal("2019-09-16", mod1->revision);
+    assert_int_equal(1, mod1->implemented);
+    assert_non_null(ly_ctx_get_module(UTEST_LYCTX, "a", "2019-09-16"));
+    ly_ctx_destroy(UTEST_LYCTX);
+
+    /* Import callback provides older revision of module 'a' and it is
+     * imported by another module, so it is preferred even if newer
+     * revision is implemented later. */
+    assert_int_equal(LY_SUCCESS, ly_ctx_new(NULL, ctx_options, &UTEST_LYCTX));
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module a {namespace urn:a; prefix a; revision 2019-09-16;}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b;import a {prefix a;}}",
+            LYS_IN_YANG, &mod2));
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a;revision 2019-09-17;}",
+            LYS_IN_YANG, &mod1));
+    ly_log_level(LY_LLVRB);
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {namespace urn:c;prefix c;import a {prefix a;}}",
+            LYS_IN_YANG, &mod3));
+    CHECK_LOG("Implemented module \"a@2019-09-17\" is not used for import, revision \"2019-09-16\" is imported instead.", NULL);
+    ly_log_level(LY_LLWRN);
+    assert_true(LYS_MOD_LATEST_SEARCHDIRS & mod1->latest_revision);
+    assert_int_equal(1, mod1->implemented);
+    import = mod2->parsed->imports[0].module;
+    assert_true(LYS_MOD_IMPORTED_REV & import->latest_revision);
+    assert_string_equal("2019-09-16", import->revision);
+    assert_int_equal(0, import->implemented);
+    import = mod3->parsed->imports[0].module;
+    assert_string_equal("2019-09-16", import->revision);
+    assert_non_null(ly_ctx_get_module(UTEST_LYCTX, "a", "2019-09-16"));
+    assert_non_null(ly_ctx_get_module(UTEST_LYCTX, "a", "2019-09-17"));
+    assert_string_equal("2019-09-17", ly_ctx_get_module_implemented(UTEST_LYCTX, "a")->revision);
+    ly_ctx_destroy(UTEST_LYCTX);
+
+    /* check of circular dependency */
+    assert_int_equal(LY_SUCCESS, ly_ctx_new(NULL, ctx_options, &UTEST_LYCTX));
+    str = "module a {namespace urn:a; prefix a;"
+            "import b {prefix b;}"
+            "}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, str);
+    str = "module b { yang-version 1.1; namespace urn:b; prefix b;"
+            "import a {prefix a;}"
+            "}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+}
+
+static void
+test_get_models(void **state)
+{
+    struct lys_module *mod, *mod2;
+    const char *str0 = "module a {namespace urn:a;prefix a;}";
+    const char *str1 = "module a {namespace urn:a;prefix a;revision 2018-10-23;}";
+    const char *str2 = "module a {namespace urn:a;prefix a;revision 2018-10-23;revision 2018-10-24;}";
+    struct ly_in *in0, *in1, *in2;
+    struct lys_glob_unres unres = {0};
+
+    unsigned int index = 0;
+    const char *names[] = {
+        "ietf-yang-metadata", "yang", "ietf-inet-types", "ietf-yang-types", "ietf-yang-schema-mount",
+        "ietf-yang-structure-ext", "ietf-datastores", "ietf-yang-library", "a", "a", "a"
+    };
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str0, &in0));
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str1, &in1));
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str2, &in2));
+
+    /* invalid arguments */
+    assert_ptr_equal(NULL, ly_ctx_get_module(NULL, NULL, NULL));
+    CHECK_LOG("Invalid argument ctx (ly_ctx_get_module()).", NULL);
+    assert_ptr_equal(NULL, ly_ctx_get_module(UTEST_LYCTX, NULL, NULL));
+    CHECK_LOG_CTX("Invalid argument name (ly_ctx_get_module()).", NULL);
+    assert_ptr_equal(NULL, ly_ctx_get_module_ns(NULL, NULL, NULL));
+    CHECK_LOG("Invalid argument ctx (ly_ctx_get_module_ns()).", NULL);
+    assert_ptr_equal(NULL, ly_ctx_get_module_ns(UTEST_LYCTX, NULL, NULL));
+    CHECK_LOG_CTX("Invalid argument ns (ly_ctx_get_module_ns()).", NULL);
+    assert_null(ly_ctx_get_module(UTEST_LYCTX, "nonsence", NULL));
+
+    /* internal modules */
+    assert_null(ly_ctx_get_module_implemented(UTEST_LYCTX, "ietf-yang-types"));
+    mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "yang");
+    assert_non_null(mod);
+    assert_non_null(mod->parsed);
+    assert_string_equal("yang", mod->name);
+    mod2 = ly_ctx_get_module_implemented_ns(UTEST_LYCTX, mod->ns);
+    assert_ptr_equal(mod, mod2);
+    assert_non_null(ly_ctx_get_module(UTEST_LYCTX, "ietf-yang-metadata", "2016-08-05"));
+    assert_non_null(ly_ctx_get_module(UTEST_LYCTX, "ietf-yang-types", "2013-07-15"));
+    assert_non_null(ly_ctx_get_module(UTEST_LYCTX, "ietf-inet-types", "2013-07-15"));
+    assert_non_null(ly_ctx_get_module_ns(UTEST_LYCTX, "urn:ietf:params:xml:ns:yang:ietf-datastores", "2018-02-14"));
+
+    /* select module by revision */
+    assert_int_equal(LY_SUCCESS, lys_parse(UTEST_LYCTX, in1, LYS_IN_YANG, NULL, &mod));
+    /* invalid attempts - implementing module of the same name and inserting the same module */
+    assert_int_equal(LY_SUCCESS, lys_parse_in(UTEST_LYCTX, in2, LYS_IN_YANG, NULL, NULL, &unres.creating, &mod2));
+    assert_int_equal(LY_EDENIED, lys_implement(mod2, NULL, &unres));
+    CHECK_LOG_CTX("Module \"a@2018-10-24\" is already implemented in revision \"2018-10-23\".", NULL);
+    lys_unres_glob_erase(&unres);
+    ly_in_reset(in1);
+    /* it is already there, fine */
+    assert_int_equal(LY_SUCCESS, lys_parse_in(UTEST_LYCTX, in1, LYS_IN_YANG, NULL, NULL, &unres.creating, NULL));
+    /* insert the second module only as imported, not implemented */
+    lys_unres_glob_erase(&unres);
+    ly_in_reset(in2);
+    assert_int_equal(LY_SUCCESS, lys_parse_in(UTEST_LYCTX, in2, LYS_IN_YANG, NULL, NULL, &unres.creating, &mod2));
+    lys_unres_glob_erase(&unres);
+    assert_non_null(mod2);
+    assert_ptr_not_equal(mod, mod2);
+    mod = ly_ctx_get_module_latest(UTEST_LYCTX, "a");
+    assert_ptr_equal(mod, mod2);
+    mod2 = ly_ctx_get_module_latest_ns(UTEST_LYCTX, mod->ns);
+    assert_ptr_equal(mod, mod2);
+    /* work with module with no revision */
+    assert_int_equal(LY_SUCCESS, lys_parse_in(UTEST_LYCTX, in0, LYS_IN_YANG, NULL, NULL, &unres.creating, &mod));
+    lys_unres_glob_erase(&unres);
+    assert_ptr_equal(mod, ly_ctx_get_module(UTEST_LYCTX, "a", NULL));
+    assert_ptr_not_equal(mod, ly_ctx_get_module_latest(UTEST_LYCTX, "a"));
+
+    str1 = "submodule b {belongs-to a {prefix a;}}";
+    ly_in_free(in1, 0);
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str1, &in1));
+    assert_int_equal(LY_EINVAL, lys_parse_in(UTEST_LYCTX, in1, LYS_IN_YANG, NULL, NULL, &unres.creating, &mod));
+    CHECK_LOG_CTX("Input data contains submodule which cannot be parsed directly without its main module.", NULL);
+    lys_unres_glob_erase(&unres);
+
+    while ((mod = (struct lys_module *)ly_ctx_get_module_iter(UTEST_LYCTX, &index))) {
+        assert_string_equal(names[index - 1], mod->name);
+    }
+    assert_int_equal(11, index);
+
+    /* cleanup */
+    ly_in_free(in0, 0);
+    ly_in_free(in1, 0);
+    ly_in_free(in2, 0);
+}
+
+static void
+test_ylmem(void **state)
+{
+#define DATA_YANG_LIBRARY_START "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"\
+    "  <module-set>\n"\
+    "    <name>complete</name>\n"\
+    "    <module>\n"\
+    "      <name>yang</name>\n"\
+    "      <revision>2022-06-16</revision>\n"\
+    "      <namespace>urn:ietf:params:xml:ns:yang:1</namespace>\n"\
+    "    </module>\n"\
+    "    <module>\n"\
+    "      <name>ietf-yang-library</name>\n"\
+    "      <revision>2019-01-04</revision>\n"\
+    "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>\n"\
+    "    </module>\n"
+
+#define DATA_YANG_BASE_IMPORTS     "    <import-only-module>\n"\
+    "      <name>ietf-yang-metadata</name>\n"\
+    "      <revision>2016-08-05</revision>\n"\
+    "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-metadata</namespace>\n"\
+    "    </import-only-module>\n"\
+    "    <import-only-module>\n"\
+    "      <name>ietf-inet-types</name>\n"\
+    "      <revision>2013-07-15</revision>\n"\
+    "      <namespace>urn:ietf:params:xml:ns:yang:ietf-inet-types</namespace>\n"\
+    "    </import-only-module>\n"\
+    "    <import-only-module>\n"\
+    "      <name>ietf-yang-types</name>\n"\
+    "      <revision>2013-07-15</revision>\n"\
+    "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-types</namespace>\n"\
+    "    </import-only-module>\n"\
+    "    <import-only-module>\n"\
+    "      <name>ietf-datastores</name>\n"\
+    "      <revision>2018-02-14</revision>\n"\
+    "      <namespace>urn:ietf:params:xml:ns:yang:ietf-datastores</namespace>\n"\
+    "    </import-only-module>\n"
+
+#define DATA_YANG_SCHEMA_MODULE_STATE         "  </module-set>\n"\
+    "  <schema>\n"\
+    "    <name>complete</name>\n"\
+    "    <module-set>complete</module-set>\n"\
+    "  </schema>\n"\
+    "  <content-id>9</content-id>\n"\
+    "</yang-library>\n"\
+    "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"\
+    "  <module-set-id>12</module-set-id>\n"\
+    "  <module>\n"\
+    "    <name>ietf-yang-metadata</name>\n"\
+    "    <revision>2016-08-05</revision>\n"\
+    "    <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-metadata</namespace>\n"\
+    "    <conformance-type>import</conformance-type>\n"\
+    "  </module>\n"\
+    "  <module>\n"\
+    "    <name>yang</name>\n"\
+    "    <revision>2022-06-16</revision>\n"\
+    "    <namespace>urn:ietf:params:xml:ns:yang:1</namespace>\n"\
+    "    <conformance-type>implement</conformance-type>\n"\
+    "  </module>\n"\
+    "  <module>\n"\
+    "    <name>ietf-inet-types</name>\n"\
+    "    <revision>2013-07-15</revision>\n"\
+    "    <namespace>urn:ietf:params:xml:ns:yang:ietf-inet-types</namespace>\n"\
+    "    <conformance-type>import</conformance-type>\n"\
+    "  </module>\n"\
+    "  <module>\n"\
+    "    <name>ietf-yang-types</name>\n"\
+    "    <revision>2013-07-15</revision>\n"\
+    "    <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-types</namespace>\n"\
+    "    <conformance-type>import</conformance-type>\n"\
+    "  </module>\n"\
+    "  <module>\n"\
+    "    <name>ietf-yang-library</name>\n"\
+    "    <revision>2019-01-04</revision>\n"\
+    "    <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>\n"\
+    "    <conformance-type>implement</conformance-type>\n"\
+    "  </module>\n"\
+    "  <module>\n"\
+    "    <name>ietf-datastores</name>\n"\
+    "    <revision>2018-02-14</revision>\n"\
+    "    <namespace>urn:ietf:params:xml:ns:yang:ietf-datastores</namespace>\n"\
+    "    <conformance-type>import</conformance-type>\n"\
+    "  </module>\n"
+
+    const char *yanglibrary_only =
+            DATA_YANG_LIBRARY_START
+            DATA_YANG_BASE_IMPORTS
+            DATA_YANG_SCHEMA_MODULE_STATE
+            "</modules-state>\n";
+
+    const char *with_netconf =
+            DATA_YANG_LIBRARY_START
+            "    <module>\n"
+            "      <name>ietf-netconf</name>\n"
+            "      <revision>2011-06-01</revision>\n"
+            "      <namespace>urn:ietf:params:xml:ns:netconf:base:1.0</namespace>\n"
+            "    </module>\n"
+            DATA_YANG_BASE_IMPORTS
+            "    <import-only-module>\n"
+            "      <name>ietf-netconf-acm</name>\n"
+            "      <revision>2018-02-14</revision>\n"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-netconf-acm</namespace>\n"
+            "    </import-only-module>\n"
+            DATA_YANG_SCHEMA_MODULE_STATE
+            "  <module>\n"
+            "    <name>ietf-netconf</name>\n"
+            "    <revision>2011-06-01</revision>\n"
+            "    <namespace>urn:ietf:params:xml:ns:netconf:base:1.0</namespace>\n"
+            "    <conformance-type>implement</conformance-type>\n"
+            "  </module>\n"
+            "  <module>\n"
+            "    <name>ietf-netconf-acm</name>\n"
+            "    <revision>2018-02-14</revision>\n"
+            "    <namespace>urn:ietf:params:xml:ns:yang:ietf-netconf-acm</namespace>\n"
+            "    <conformance-type>import</conformance-type>\n"
+            "  </module>\n"
+            "</modules-state>";
+
+    char *with_netconf_features = malloc(8096);
+
+    strcpy(with_netconf_features,
+            DATA_YANG_LIBRARY_START
+            "    <module>\n"
+            "      <name>ietf-netconf</name>\n"
+            "      <revision>2011-06-01</revision>\n"
+            "      <namespace>urn:ietf:params:xml:ns:netconf:base:1.0</namespace>\n"
+            "      <feature>writable-running</feature>\n"
+            "      <feature>candidate</feature>\n"
+            "      <feature>confirmed-commit</feature>\n"
+            "      <feature>rollback-on-error</feature>\n"
+            "      <feature>validate</feature>\n"
+            "      <feature>startup</feature>\n"
+            "      <feature>url</feature>\n"
+            "      <feature>xpath</feature>\n"
+            "    </module>\n"
+            "    <import-only-module>\n"
+            "      <name>ietf-yang-metadata</name>\n"
+            "      <revision>2016-08-05</revision>\n"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-metadata</namespace>\n"
+            "    </import-only-module>\n"
+            "    <import-only-module>\n"
+            "      <name>ietf-inet-types</name>\n"
+            "      <revision>2013-07-15</revision>\n"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-inet-types</namespace>\n"
+            "    </import-only-module>\n"
+            "    <import-only-module>\n"
+            "      <name>ietf-yang-types</name>\n"
+            "      <revision>2013-07-15</revision>\n"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-types</namespace>\n"
+            "    </import-only-module>\n"
+            "    <import-only-module>\n"
+            "      <name>ietf-datastores</name>\n"
+            "      <revision>2018-02-14</revision>\n"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-datastores</namespace>\n"
+            "    </import-only-module>\n"
+            "    <import-only-module>\n"
+            "      <name>ietf-netconf-acm</name>\n"
+            "      <revision>2018-02-14</revision>\n"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-netconf-acm</namespace>\n"
+            "    </import-only-module>\n");
+    strcpy(with_netconf_features + strlen(with_netconf_features),
+            DATA_YANG_SCHEMA_MODULE_STATE
+            "  <module>\n"
+            "    <name>ietf-netconf</name>\n"
+            "    <revision>2011-06-01</revision>\n"
+            "    <namespace>urn:ietf:params:xml:ns:netconf:base:1.0</namespace>\n"
+            "    <feature>writable-running</feature>\n"
+            "    <feature>candidate</feature>\n"
+            "    <feature>confirmed-commit</feature>\n"
+            "    <feature>rollback-on-error</feature>\n"
+            "    <feature>validate</feature>\n"
+            "    <feature>startup</feature>\n"
+            "    <feature>url</feature>\n"
+            "    <feature>xpath</feature>\n"
+            "    <conformance-type>implement</conformance-type>\n"
+            "  </module>\n"
+            "  <module>\n"
+            "    <name>ietf-netconf-acm</name>\n"
+            "    <revision>2018-02-14</revision>\n"
+            "    <namespace>urn:ietf:params:xml:ns:yang:ietf-netconf-acm</namespace>\n"
+            "    <conformance-type>import</conformance-type>\n"
+            "  </module>\n"
+            "</modules-state>");
+
+    const char *garbage_revision =
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+            "  <module-set>\n"
+            "    <name>complete</name>\n"
+            "    <module>\n"
+            "      <name>yang</name>\n"
+            "      <revision>2022-06-16</revision>\n"
+            "      <namespace>urn:ietf:params:xml:ns:yang:1</namespace>\n"
+            "    </module>\n"
+            "    <module>\n"
+            "      <name>ietf-yang-library</name>\n"
+            "      <revision>2019-01-01</revision>\n"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>\n"
+            "    </module>\n"
+            DATA_YANG_BASE_IMPORTS
+            DATA_YANG_SCHEMA_MODULE_STATE
+            "</modules-state>\n";
+
+    const char *no_yanglibrary =
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+            "  <module-set>\n"
+            "    <name>complete</name>\n"
+            "    <module>\n"
+            "      <name>yang</name>\n"
+            "      <revision>2022-06-16</revision>\n"
+            "      <namespace>urn:ietf:params:xml:ns:yang:1</namespace>\n"
+            "    </module>\n"
+            DATA_YANG_BASE_IMPORTS
+            DATA_YANG_SCHEMA_MODULE_STATE
+            "</modules-state>\n";
+
+    (void) state;
+    /* seperate context to avoid double free during teadown */
+    struct ly_ctx *ctx_test = NULL;
+
+    /* test invalid parameters */
+    assert_int_equal(LY_EINVAL, ly_ctx_new_ylpath(NULL, NULL, LYD_XML, 0, &ctx_test));
+    assert_int_equal(LY_EINVAL, ly_ctx_new_ylpath(NULL, TESTS_SRC, LYD_XML, 0, NULL));
+    assert_int_equal(LY_ESYS, ly_ctx_new_ylpath(NULL, TESTS_SRC "garbage", LYD_XML, 0, &ctx_test));
+
+    /* basic test with ietf-yang-library-only */
+    assert_int_equal(LY_SUCCESS, ly_ctx_new_ylmem(TESTS_SRC "/modules/yang/", yanglibrary_only, LYD_XML, 0, &ctx_test));
+    assert_non_null(ly_ctx_get_module(ctx_test, "ietf-yang-library", "2019-01-04"));
+    assert_null(ly_ctx_get_module(ctx_test, "ietf-netconf", "2011-06-01"));
+    ly_ctx_destroy(ctx_test);
+    ctx_test = NULL;
+
+    /* test loading module, should also import other module */
+    assert_int_equal(LY_SUCCESS, ly_ctx_new_ylmem(TESTS_SRC "/modules/yang/", with_netconf, LYD_XML, 0, &ctx_test));
+    assert_non_null(ly_ctx_get_module(ctx_test, "ietf-netconf", "2011-06-01"));
+    assert_int_equal(1, ly_ctx_get_module(ctx_test, "ietf-netconf", "2011-06-01")->implemented);
+    assert_non_null(ly_ctx_get_module(ctx_test, "ietf-netconf-acm", "2018-02-14"));
+    assert_int_equal(0, ly_ctx_get_module(ctx_test, "ietf-netconf-acm", "2018-02-14")->implemented);
+    assert_int_equal(LY_ENOT, lys_feature_value(ly_ctx_get_module(ctx_test, "ietf-netconf", "2011-06-01"), "url"));
+    ly_ctx_destroy(ctx_test);
+    ctx_test = NULL;
+
+    /* test loading module with feature if they are present */
+    assert_int_equal(LY_SUCCESS, ly_ctx_new_ylmem(TESTS_SRC "/modules/yang/", with_netconf_features, LYD_XML, 0, &ctx_test));
+    assert_non_null(ly_ctx_get_module(ctx_test, "ietf-netconf", "2011-06-01"));
+    assert_non_null(ly_ctx_get_module(ctx_test, "ietf-netconf-acm", "2018-02-14"));
+    assert_int_equal(LY_SUCCESS, lys_feature_value(ly_ctx_get_module(ctx_test, "ietf-netconf", "2011-06-01"), "url"));
+    ly_ctx_destroy(ctx_test);
+    ctx_test = NULL;
+
+    /* test with not matching revision */
+    assert_int_equal(LY_EINVAL, ly_ctx_new_ylmem(TESTS_SRC "/modules/yang/", garbage_revision, LYD_XML, 0, &ctx_test));
+
+    /* test data containing ietf-yang-library which conflicts with the option */
+    assert_int_equal(LY_EINVAL, ly_ctx_new_ylmem(TESTS_SRC "/modules/yang/", with_netconf_features, LYD_XML, LY_CTX_NO_YANGLIBRARY, &ctx_test));
+
+    /* test creating without ietf-yang-library */
+    assert_int_equal(LY_SUCCESS, ly_ctx_new_ylmem(TESTS_SRC "/modules/yang/", no_yanglibrary, LYD_XML, LY_CTX_NO_YANGLIBRARY, &ctx_test));
+    assert_int_equal(NULL, ly_ctx_get_module(ctx_test, "ietf-yang-library", "2019-01-04"));
+    ly_ctx_destroy(ctx_test);
+    free(with_netconf_features);
+}
+
+static LY_ERR
+check_node_priv_parsed_is_set(struct lysc_node *node, void *data, ly_bool *UNUSED(dfs_continue))
+{
+    const struct lysp_node *pnode;
+    const char ***iter;
+
+    pnode = (const struct lysp_node *)node->priv;
+    CHECK_POINTER(pnode, 1);
+    iter = (const char ***)data;
+    CHECK_POINTER(**iter, 1);
+    CHECK_STRING(pnode->name, **iter);
+    (*iter)++;
+
+    return LY_SUCCESS;
+}
+
+static LY_ERR
+check_node_priv_parsed_not_set(struct lysc_node *node, void *UNUSED(data), ly_bool *UNUSED(dfs_continue))
+{
+    CHECK_POINTER(node->priv, 0);
+    return LY_SUCCESS;
+}
+
+static void
+check_ext_instance_priv_parsed_is_set(struct lysc_ext_instance *ext)
+{
+    LY_ARRAY_COUNT_TYPE u, v;
+    struct lysc_ext_substmt *substmts;
+    struct lysc_node *cnode;
+    const char **iter;
+    const char *check[] = {
+        "tmp_cont", "lf", NULL
+    };
+
+    LY_ARRAY_FOR(ext, u) {
+        substmts = ext[u].substmts;
+        LY_ARRAY_FOR(substmts, v) {
+            if (substmts && substmts[v].storage && (substmts[v].stmt & LY_STMT_DATA_NODE_MASK)) {
+                cnode = *(struct lysc_node **)substmts[v].storage;
+                iter = check;
+                assert_int_equal(LY_SUCCESS, lysc_tree_dfs_full(cnode, check_node_priv_parsed_is_set, &iter));
+            }
+        }
+    }
+}
+
+static void
+check_ext_instance_priv_parsed_not_set(struct lysc_ext_instance *ext)
+{
+    LY_ARRAY_COUNT_TYPE u, v;
+    struct lysc_ext_substmt *substmts;
+    struct lysc_node *cnode;
+
+    LY_ARRAY_FOR(ext, u) {
+        substmts = ext[u].substmts;
+        LY_ARRAY_FOR(substmts, v) {
+            if (substmts && substmts[v].storage && (substmts[v].stmt & LY_STMT_DATA_NODE_MASK)) {
+                cnode = *(struct lysc_node **)substmts[v].storage;
+                if (cnode) {
+                    CHECK_POINTER((struct lysp_node *)cnode->priv, 0);
+                }
+            }
+        }
+    }
+}
+
+/**
+ * @brief Testing of LY_CTX_SET_PRIV_PARSED.
+ */
+static void
+test_set_priv_parsed(void **state)
+{
+    struct lys_module *mod;
+    const char *schema_a;
+    const char **iter;
+    const char *check[] = {
+        "cont", "contnotif", "contx", "grpleaf", "augleaf", "l1",
+        "l1a", "l1b", "l1c", "foo1", "ll", "any", "l2",
+        "l2c", "l2cx", "ch", "cas", "casx", "oper",
+        "input", "inparam", "output", "outparam", "n1", NULL
+    };
+
+    /* each node must have a unique name. */
+    schema_a = "module a {\n"
+            "  namespace urn:tests:a;\n"
+            "  prefix a;yang-version 1.1;\n"
+            "\n"
+            "  import ietf-restconf {\n"
+            "    prefix rc;\n"
+            "    revision-date 2017-01-26;\n"
+            "  }\n"
+            "\n"
+            "  rc:yang-data \"tmp\" {\n"
+            "    container tmp_cont {\n"
+            "      leaf lf {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "  container cont {\n"
+            "    notification contnotif;\n"
+            "    leaf-list contx {\n"
+            "      type string;\n"
+            "    }\n"
+            "    uses grp;\n"
+            "  }\n"
+            "  list l1 {\n"
+            "    key \"l1a l1b\";\n"
+            "    leaf l1a {\n"
+            "      type string;\n"
+            "    }\n"
+            "    leaf l1b {\n"
+            "      type string;\n"
+            "    }\n"
+            "    leaf l1c {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n"
+            "  feature f1;\n"
+            "  feature f2;\n"
+            "  leaf foo1 {\n"
+            "    type uint16;\n"
+            "    if-feature f1;\n"
+            "  }\n"
+            "  leaf foo2 {\n"
+            "    type uint16;\n"
+            "  }\n"
+            "  leaf foo3 {\n"
+            "    type uint16;\n"
+            "    if-feature f2;\n"
+            "  }\n"
+            "  leaf-list ll {\n"
+            "    type string;\n"
+            "  }\n"
+            "  anydata any {\n"
+            "    config false;\n"
+            "  }\n"
+            "  list l2 {\n"
+            "    config false;\n"
+            "    container l2c {\n"
+            "      leaf l2cx {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "  choice ch {\n"
+            "    case cas {\n"
+            "      leaf casx {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "  rpc oper {\n"
+            "    input {\n"
+            "      leaf inparam {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "    output {\n"
+            "      leaf outparam {\n"
+            "        type int8;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "  notification n1;\n"
+            "  grouping grp {\n"
+            "    leaf grpleaf {\n"
+            "      type uint16;\n"
+            "    }\n"
+            "  }\n"
+            "  augment /cont {\n"
+            "    leaf augleaf {\n"
+            "      type uint16;\n"
+            "    }\n"
+            "  }\n"
+            "  deviation /a:foo2 {\n"
+            "    deviate not-supported;\n"
+            "  }\n"
+            "}\n";
+
+    /* use own context with extra flags */
+    ly_ctx_destroy(UTEST_LYCTX);
+    const char *feats[] = {"f1", NULL};
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_new(NULL, LY_CTX_SET_PRIV_PARSED, &UTEST_LYCTX));
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "ietf-restconf", "2017-01-26", NULL));
+    UTEST_ADD_MODULE(schema_a, LYS_IN_YANG, feats, NULL);
+
+    print_message("[          ] create context\n");
+    mod = ly_ctx_get_module(UTEST_LYCTX, "a", NULL);
+    iter = check;
+    assert_int_equal(LY_SUCCESS, lysc_module_dfs_full(mod, check_node_priv_parsed_is_set, &iter));
+    check_ext_instance_priv_parsed_is_set(mod->compiled->exts);
+
+    print_message("[          ] unset option\n");
+    assert_int_equal(LY_SUCCESS, ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED));
+    mod = ly_ctx_get_module(UTEST_LYCTX, "a", NULL);
+    iter = check;
+    assert_int_equal(LY_SUCCESS, lysc_module_dfs_full(mod, check_node_priv_parsed_not_set, &iter));
+    check_ext_instance_priv_parsed_not_set(mod->compiled->exts);
+
+    print_message("[          ] set option\n");
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED));
+    mod = ly_ctx_get_module(UTEST_LYCTX, "a", NULL);
+    iter = check;
+    assert_int_equal(LY_SUCCESS, lysc_module_dfs_full(mod, check_node_priv_parsed_is_set, &iter));
+    check_ext_instance_priv_parsed_is_set(mod->compiled->exts);
+}
+
+static void
+test_explicit_compile(void **state)
+{
+    uint32_t i;
+    struct lys_module *mod;
+    const char *schema_a = "module a {\n"
+            "  namespace urn:tests:a;\n"
+            "  prefix a;yang-version 1.1;\n"
+            "  feature f1;\n"
+            "  feature f2;\n"
+            "  leaf foo1 {\n"
+            "    type uint16;\n"
+            "    if-feature f1;\n"
+            "  }\n"
+            "  leaf foo2 {\n"
+            "    type uint16;\n"
+            "  }\n"
+            "  container cont {\n"
+            "    leaf foo3 {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+    const char *schema_b = "module b {\n"
+            "  namespace urn:tests:b;\n"
+            "  prefix b;yang-version 1.1;\n"
+            "  import a {\n"
+            "    prefix a;\n"
+            "  }\n"
+            "  augment /a:cont {\n"
+            "    leaf augleaf {\n"
+            "      type uint16;\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+    const char *schema_c = "module c {\n"
+            "  namespace urn:tests:c;\n"
+            "  prefix c;yang-version 1.1;\n"
+            "  import a {\n"
+            "    prefix a;\n"
+            "  }\n"
+            "  deviation /a:foo2 {\n"
+            "    deviate not-supported;\n"
+            "  }\n"
+            "}\n";
+
+    /* use own context with extra flags */
+    ly_ctx_destroy(UTEST_LYCTX);
+    const char *feats[] = {"f1", NULL};
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_new(NULL, LY_CTX_EXPLICIT_COMPILE, &UTEST_LYCTX));
+    UTEST_ADD_MODULE(schema_a, LYS_IN_YANG, NULL, &mod);
+    UTEST_ADD_MODULE(schema_b, LYS_IN_YANG, NULL, NULL);
+    UTEST_ADD_MODULE(schema_c, LYS_IN_YANG, NULL, NULL);
+    assert_int_equal(LY_SUCCESS, lys_set_implemented((struct lys_module *)mod, feats));
+
+    /* none of the modules should be compiled */
+    i = 0;
+    while ((mod = ly_ctx_get_module_iter(UTEST_LYCTX, &i))) {
+        assert_null(mod->compiled);
+    }
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_compile(UTEST_LYCTX));
+
+    /* check internal modules */
+    mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "yang");
+    assert_non_null(mod);
+    mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "ietf-datastores");
+    assert_non_null(mod);
+    mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "ietf-yang-library");
+    assert_non_null(mod);
+
+    /* check test modules */
+    mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "a");
+    assert_non_null(mod);
+    mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "b");
+    assert_non_null(mod);
+    mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "c");
+    assert_non_null(mod);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_searchdirs),
+        UTEST(test_options),
+        UTEST(test_models),
+        UTEST(test_imports),
+        UTEST(test_get_models),
+        UTEST(test_ylmem),
+        UTEST(test_set_priv_parsed),
+        UTEST(test_explicit_compile),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/basic/test_hash_table.c b/tests/utests/basic/test_hash_table.c
new file mode 100644
index 0000000..25b595a
--- /dev/null
+++ b/tests/utests/basic/test_hash_table.c
@@ -0,0 +1,271 @@
+/*
+ * @file test_hash_table.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for functions from hash_table.c
+ *
+ * Copyright (c) 2018 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include <stdlib.h>
+
+#include "common.h"
+#include "hash_table.h"
+
+struct ht_rec *lyht_get_rec(unsigned char *recs, uint16_t rec_size, uint32_t idx);
+
+static void
+test_invalid_arguments(void **state)
+{
+    assert_int_equal(LY_EINVAL, lydict_insert(NULL, NULL, 0, NULL));
+    CHECK_LOG("Invalid argument ctx (lydict_insert()).", NULL);
+
+    assert_int_equal(LY_EINVAL, lydict_insert_zc(NULL, NULL, NULL));
+    CHECK_LOG("Invalid argument ctx (lydict_insert_zc()).", NULL);
+    assert_int_equal(LY_EINVAL, lydict_insert_zc(UTEST_LYCTX, NULL, NULL));
+    CHECK_LOG_CTX("Invalid argument str_p (lydict_insert_zc()).", NULL);
+}
+
+static void
+test_dict_hit(void **state)
+{
+    const char *str1, *str2, *str3;
+
+    /* insert 2 strings, one of them repeatedly */
+    assert_int_equal(LY_SUCCESS, lydict_insert(UTEST_LYCTX, "test1", 0, &str1));
+    assert_non_null(str1);
+    /* via zerocopy we have to get the same pointer as provided */
+    assert_non_null(str2 = strdup("test2"));
+    assert_int_equal(LY_SUCCESS, lydict_insert_zc(UTEST_LYCTX, (char *)str2, &str3));
+    assert_ptr_equal(str2, str3);
+    /* here we get the same pointer as in case the string was inserted first time */
+    assert_int_equal(LY_SUCCESS, lydict_insert(UTEST_LYCTX, "test1", 0, &str2));
+    assert_non_null(str2);
+    assert_ptr_equal(str1, str2);
+
+    /* remove strings, but the repeatedly inserted only once */
+    lydict_remove(UTEST_LYCTX, "test1");
+    lydict_remove(UTEST_LYCTX, "test2");
+
+    /* destroy dictionary - should raise warning about data presence */
+    ly_ctx_destroy(UTEST_LYCTX);
+    UTEST_LYCTX = NULL;
+    CHECK_LOG("String \"test1\" not freed from the dictionary, refcount 1", NULL);
+
+#ifndef NDEBUG
+    /* cleanup */
+    free((char *)str1);
+#endif
+}
+
+static uint8_t
+ht_equal_clb(void *val1, void *val2, uint8_t mod, void *cb_data)
+{
+    int *v1, *v2;
+
+    (void)mod;
+    (void)cb_data;
+
+    v1 = (int *)val1;
+    v2 = (int *)val2;
+
+    return *v1 == *v2;
+}
+
+static void
+test_ht_basic(void **state)
+{
+    uint32_t i;
+    struct hash_table *ht;
+
+    assert_non_null(ht = lyht_new(8, sizeof(int), ht_equal_clb, NULL, 0));
+
+    i = 2;
+    assert_int_equal(LY_ENOTFOUND, lyht_find(ht, &i, i, NULL));
+    assert_int_equal(LY_SUCCESS, lyht_insert(ht, &i, i, NULL));
+    assert_int_equal(LY_SUCCESS, lyht_find(ht, &i, i, NULL));
+    assert_int_equal(LY_SUCCESS, lyht_remove(ht, &i, i));
+    assert_int_equal(LY_ENOTFOUND, lyht_find(ht, &i, i, NULL));
+    assert_int_equal(LY_ENOTFOUND, lyht_remove(ht, &i, i));
+    CHECK_LOG("Invalid argument hash (lyht_remove_with_resize_cb()).", NULL);
+
+    lyht_free(ht);
+}
+
+static void
+test_ht_resize(void **state)
+{
+    uint32_t i;
+    struct ht_rec *rec;
+    struct hash_table *ht;
+
+    assert_non_null(ht = lyht_new(8, sizeof(int), ht_equal_clb, NULL, 1));
+    assert_int_equal(8, ht->size);
+
+    /* insert records into indexes 2-7 */
+    for (i = 2; i < 8; ++i) {
+        assert_int_equal(LY_SUCCESS, lyht_insert(ht, &i, i, NULL));
+    }
+    /* check that table resized */
+    assert_int_equal(16, ht->size);
+
+    /* check expected content of the table */
+    for (i = 0; i < 16; ++i) {
+        if ((i >= 2) && (i < 8)) {
+            /* inserted data on indexes 2-7 */
+            rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+            assert_int_equal(1, rec->hits);
+            assert_int_equal(i, rec->hash);
+        } else {
+            /* nothing otherwise */
+            rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+            assert_int_equal(0, rec->hits);
+        }
+    }
+
+    /* removing not present data should fail */
+    for (i = 0; i < 2; ++i) {
+        UTEST_LOG_CLEAN;
+        assert_int_equal(LY_ENOTFOUND, lyht_remove(ht, &i, i));
+        CHECK_LOG("Invalid argument hash (lyht_remove_with_resize_cb()).", NULL);
+    }
+    /* removing present data, resize should happened
+     * when we are below 25% of the table filled, so with 3 records left */
+    for ( ; i < 5; ++i) {
+        assert_int_equal(LY_SUCCESS, lyht_remove(ht, &i, i));
+    }
+    assert_int_equal(8, ht->size);
+
+    /* remove the rest */
+    for ( ; i < 8; ++i) {
+        assert_int_equal(LY_SUCCESS, lyht_remove(ht, &i, i));
+    }
+
+    for (i = 0; i < 8; ++i) {
+        assert_int_equal(LY_ENOTFOUND, lyht_find(ht, &i, i, NULL));
+    }
+
+    /* cleanup */
+    lyht_free(ht);
+}
+
+static void
+test_ht_collisions(void **UNUSED(state))
+{
+#define GET_REC_INT(rec) (*((uint32_t *)&(rec)->val))
+
+    uint32_t i;
+    struct ht_rec *rec;
+    struct hash_table *ht;
+
+    assert_non_null(ht = lyht_new(8, sizeof(int), ht_equal_clb, NULL, 1));
+
+    for (i = 2; i < 6; ++i) {
+        assert_int_equal(lyht_insert(ht, &i, 2, NULL), 0);
+    }
+
+    /* check all records */
+    for (i = 0; i < 2; ++i) {
+        rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+        assert_int_equal(rec->hits, 0);
+    }
+    rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+    assert_int_equal(rec->hits, 4);
+    assert_int_equal(GET_REC_INT(rec), i);
+    ++i;
+    for ( ; i < 6; ++i) {
+        rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+        assert_int_equal(rec->hits, 1);
+        assert_int_equal(GET_REC_INT(rec), i);
+    }
+    for ( ; i < 8; ++i) {
+        rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+        assert_int_equal(rec->hits, 0);
+    }
+
+    i = 4;
+    assert_int_equal(lyht_remove(ht, &i, 2), 0);
+
+    rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+    assert_int_equal(rec->hits, -1);
+
+    i = 2;
+    assert_int_equal(lyht_remove(ht, &i, 2), 0);
+
+    /* check all records */
+    for (i = 0; i < 2; ++i) {
+        rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+        assert_int_equal(rec->hits, 0);
+    }
+    rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+    assert_int_equal(rec->hits, 2);
+    assert_int_equal(GET_REC_INT(rec), 5);
+    ++i;
+    rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+    assert_int_equal(rec->hits, 1);
+    assert_int_equal(GET_REC_INT(rec), 3);
+    ++i;
+    for ( ; i < 6; ++i) {
+        rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+        assert_int_equal(rec->hits, -1);
+    }
+    for ( ; i < 8; ++i) {
+        rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+        assert_int_equal(rec->hits, 0);
+    }
+
+    for (i = 0; i < 3; ++i) {
+        assert_int_equal(lyht_find(ht, &i, 2, NULL), LY_ENOTFOUND);
+    }
+    assert_int_equal(lyht_find(ht, &i, 2, NULL), LY_SUCCESS);
+    ++i;
+    assert_int_equal(lyht_find(ht, &i, 2, NULL), LY_ENOTFOUND);
+    ++i;
+    assert_int_equal(lyht_find(ht, &i, 2, NULL), LY_SUCCESS);
+    ++i;
+    for ( ; i < 8; ++i) {
+        assert_int_equal(lyht_find(ht, &i, 2, NULL), LY_ENOTFOUND);
+    }
+
+    i = 3;
+    assert_int_equal(lyht_remove(ht, &i, 2), 0);
+    i = 5;
+    assert_int_equal(lyht_remove(ht, &i, 2), 0);
+
+    /* check all records */
+    for (i = 0; i < 2; ++i) {
+        rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+        assert_int_equal(rec->hits, 0);
+    }
+    for ( ; i < 6; ++i) {
+        rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+        assert_int_equal(rec->hits, -1);
+    }
+    for ( ; i < 8; ++i) {
+        rec = lyht_get_rec(ht->recs, ht->rec_size, i);
+        assert_int_equal(rec->hits, 0);
+    }
+
+    lyht_free(ht);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_invalid_arguments),
+        UTEST(test_dict_hit),
+        UTEST(test_ht_basic),
+        UTEST(test_ht_resize),
+        UTEST(test_ht_collisions),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/basic/test_inout.c b/tests/utests/basic/test_inout.c
new file mode 100644
index 0000000..be27510
--- /dev/null
+++ b/tests/utests/basic/test_inout.c
@@ -0,0 +1,401 @@
+/**
+ * @file test_inout.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for input and output handlers functions
+ *
+ * Copyright (c) 2020 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "common.h"
+#include "in.h"
+#include "log.h"
+#include "out.h"
+
+#define TEST_INPUT_FILE TESTS_BIN "/libyang_test_input"
+#define TEST_OUTPUT_FILE TESTS_BIN "/libyang_test_output"
+#define TEST_OUTPUT_FILE2 TESTS_BIN "/libyang_test_output2"
+
+static int
+setup_files(void **state)
+{
+    int fd;
+
+    UTEST_SETUP;
+
+    /* create input */
+    fd = open(TEST_INPUT_FILE, O_CREAT | O_WRONLY, 00600);
+    if (fd == -1) {
+        return 1;
+    }
+
+    /* write something */
+    if (write(fd, "data", 4) != 4) {
+        return 1;
+    }
+    close(fd);
+
+    /* create output */
+    fd = open(TEST_OUTPUT_FILE, O_CREAT | O_RDONLY, 00600);
+    if (fd == -1) {
+        return 1;
+    }
+    close(fd);
+
+    /* create output2 */
+    fd = open(TEST_OUTPUT_FILE2, O_CREAT | O_RDONLY, 00600);
+    if (fd == -1) {
+        return 1;
+    }
+    close(fd);
+
+    return 0;
+}
+
+static int
+teardown_files(void **state)
+{
+    unlink(TEST_INPUT_FILE);
+    unlink(TEST_OUTPUT_FILE);
+    unlink(TEST_OUTPUT_FILE2);
+
+    UTEST_TEARDOWN;
+    return 0;
+}
+
+static void
+test_input_mem(void **UNUSED(state))
+{
+    struct ly_in *in = NULL;
+    char *str1 = "a", *str2 = "b";
+
+    assert_int_equal(LY_EINVAL, ly_in_new_memory(NULL, NULL));
+    assert_int_equal(LY_EINVAL, ly_in_new_memory(str1, NULL));
+    assert_null(ly_in_memory(NULL, NULL));
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str1, &in));
+    assert_int_equal(LY_IN_MEMORY, ly_in_type(in));
+    assert_ptr_equal(str1, ly_in_memory(in, str2));
+    assert_ptr_equal(str2, ly_in_memory(in, NULL));
+    assert_ptr_equal(str2, ly_in_memory(in, NULL));
+    ly_in_free(in, 0);
+}
+
+static void
+test_input_fd(void **UNUSED(state))
+{
+    struct ly_in *in = NULL;
+    int fd1, fd2;
+    struct stat statbuf;
+
+    assert_int_equal(LY_EINVAL, ly_in_new_fd(-1, NULL));
+    assert_int_equal(-1, ly_in_fd(NULL, -1));
+
+    assert_int_not_equal(-1, fd1 = open(TEST_INPUT_FILE, O_RDONLY));
+    assert_int_not_equal(-1, fd2 = open(TEST_INPUT_FILE, O_RDONLY));
+
+    assert_int_equal(LY_EINVAL, ly_in_new_fd(fd1, NULL));
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_fd(fd1, &in));
+    assert_int_equal(LY_IN_FD, ly_in_type(in));
+    assert_ptr_equal(fd1, ly_in_fd(in, fd2));
+    assert_ptr_equal(fd2, ly_in_fd(in, -1));
+    assert_ptr_equal(fd2, ly_in_fd(in, -1));
+    ly_in_free(in, 1);
+    /* fd1 is still open */
+    assert_int_equal(0, fstat(fd1, &statbuf));
+    close(fd1);
+#ifndef _WIN32
+    /* But fd2 was closed by ly_in_free(). This results in an "invalid handler" on Windows. */
+    errno = 0;
+    assert_int_equal(-1, fstat(fd2, &statbuf));
+    assert_int_equal(errno, EBADF);
+#endif
+}
+
+static void
+test_input_file(void **UNUSED(state))
+{
+    struct ly_in *in = NULL;
+    FILE *f1 = NULL, *f2 = NULL;
+
+    assert_int_equal(LY_EINVAL, ly_in_new_file(NULL, NULL));
+    assert_null(ly_in_file(NULL, NULL));
+
+    assert_non_null(f1 = fopen(TEST_INPUT_FILE, "rb"));
+    assert_non_null(f2 = fopen(TEST_INPUT_FILE, "rb"));
+
+    assert_int_equal(LY_EINVAL, ly_in_new_file(f1, NULL));
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_file(f1, &in));
+    assert_int_equal(LY_IN_FILE, ly_in_type(in));
+    assert_ptr_equal(f1, ly_in_file(in, f2));
+    assert_ptr_equal(f2, ly_in_file(in, NULL));
+    assert_ptr_equal(f2, ly_in_file(in, NULL));
+    ly_in_free(in, 1);
+    /* f1 is still open */
+    assert_int_not_equal(-1, fileno(f1));
+    fclose(f1);
+    /* but f2 was closed by ly_in_free() */
+}
+
+static void
+test_input_filepath(void **UNUSED(state))
+{
+    struct ly_in *in = NULL;
+    const char *path1 = TEST_INPUT_FILE, *path2 = TEST_INPUT_FILE;
+
+    assert_int_equal(LY_EINVAL, ly_in_new_filepath(NULL, 0, NULL));
+    assert_int_equal(LY_EINVAL, ly_in_new_filepath(path1, 0, NULL));
+    assert_ptr_equal(((void *)-1), ly_in_filepath(NULL, NULL, 0));
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_filepath(path1, 0, &in));
+    assert_int_equal(LY_IN_FILEPATH, ly_in_type(in));
+    assert_ptr_equal(NULL, ly_in_filepath(in, path2, 0));
+    assert_string_equal(path2, ly_in_filepath(in, NULL, 0));
+    ly_in_free(in, 0);
+}
+
+static void
+test_output_mem(void **UNUSED(state))
+{
+    struct ly_out *out = NULL;
+    char *buf1 = NULL, *buf2 = NULL;
+
+    /* manipulate with the handler */
+    assert_int_equal(LY_SUCCESS, ly_out_new_memory(&buf1, 0, &out));
+    assert_int_equal(LY_OUT_MEMORY, ly_out_type(out));
+    ly_write(out, "test", 4);
+    assert_ptr_equal(buf1, ly_out_memory(out, &buf2, 0));
+    assert_ptr_equal(buf2, ly_out_memory(out, NULL, 0));
+    assert_ptr_equal(buf2, ly_out_memory(out, &buf1, strlen(buf1)));
+    ly_out_free(out, NULL, 0);
+
+    assert_int_equal(LY_SUCCESS, ly_out_new_memory(&buf1, strlen(buf1), &out));
+    ly_out_free(out, NULL, 1);
+
+    /* writing data */
+
+    assert_int_equal(LY_SUCCESS, ly_out_new_memory(&buf1, 0, &out));
+    assert_int_equal(LY_SUCCESS, ly_print(out, "test %s", "print"));
+    assert_int_equal(10, ly_out_printed(out));
+    assert_string_equal("test print", buf1);
+    assert_int_equal(LY_SUCCESS, ly_out_reset(out));
+    assert_int_equal(LY_SUCCESS, ly_write(out, "rewrite", 8));
+    assert_int_equal(8, ly_out_printed(out));
+    assert_string_equal("rewrite", buf1);
+    ly_out_free(out, NULL, 1);
+}
+
+static void
+test_output_fd(void **UNUSED(state))
+{
+    struct ly_out *out = NULL;
+    int fd1, fd2;
+    char buf[31] = {0};
+
+    assert_int_not_equal(-1, fd1 = open(TEST_OUTPUT_FILE, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR));
+    assert_int_not_equal(-1, fd2 = open(TEST_OUTPUT_FILE, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR));
+
+    /* manipulate with the handler */
+    assert_int_equal(LY_SUCCESS, ly_out_new_fd(fd1, &out));
+    assert_int_equal(LY_OUT_FD, ly_out_type(out));
+    assert_ptr_equal(fd1, ly_out_fd(out, fd2));
+    assert_ptr_equal(fd2, ly_out_fd(out, -1));
+    assert_ptr_equal(fd2, ly_out_fd(out, fd1));
+    ly_out_free(out, NULL, 0);
+    assert_int_equal(0, close(fd2));
+    assert_int_equal(LY_SUCCESS, ly_out_new_fd(fd1, &out));
+    ly_out_free(out, NULL, 1);
+
+    /* writing data */
+    assert_int_not_equal(-1, fd1 = open(TEST_OUTPUT_FILE, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR));
+    assert_int_not_equal(-1, fd2 = open(TEST_OUTPUT_FILE, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR));
+    /* truncate file to start with no data */
+    assert_int_equal(0, ftruncate(fd1, 0));
+
+    assert_int_equal(LY_SUCCESS, ly_out_new_fd(fd1, &out));
+    assert_int_equal(LY_SUCCESS, ly_print(out, "test %s", "print"));
+    assert_int_equal(10, ly_out_printed(out));
+    ly_print_flush(out);
+    assert_int_equal(10, read(fd2, buf, 30));
+    assert_string_equal("test print", buf);
+    assert_int_equal(0, lseek(fd2, 0, SEEK_SET));
+    assert_int_equal(LY_SUCCESS, ly_out_reset(out));
+
+    assert_int_equal(LY_SUCCESS, ly_write(out, "rewrite", 8));
+    assert_int_equal(8, ly_out_printed(out));
+    ly_print_flush(out);
+    assert_int_equal(8, read(fd2, buf, 30));
+    assert_string_equal("rewrite", buf);
+
+    close(fd2);
+    ly_out_free(out, NULL, 1);
+}
+
+static void
+test_output_file(void **UNUSED(state))
+{
+    struct ly_out *out = NULL;
+    FILE *f1, *f2;
+    char buf[31] = {0};
+
+    assert_non_null(f1 = fopen(TEST_OUTPUT_FILE, "wb"));
+    assert_non_null(f2 = fopen(TEST_OUTPUT_FILE, "wb"));
+
+    /* manipulate with the handler */
+    assert_int_equal(LY_SUCCESS, ly_out_new_file(f1, &out));
+    assert_int_equal(LY_OUT_FILE, ly_out_type(out));
+    assert_ptr_equal(f1, ly_out_file(out, f2));
+    assert_ptr_equal(f2, ly_out_file(out, NULL));
+    assert_ptr_equal(f2, ly_out_file(out, f1));
+    ly_out_free(out, NULL, 0);
+    assert_int_equal(0, fclose(f2));
+    assert_int_equal(LY_SUCCESS, ly_out_new_file(f1, &out));
+    ly_out_free(out, NULL, 1);
+
+    /* writing data */
+    assert_non_null(f1 = fopen(TEST_OUTPUT_FILE, "wb"));
+    assert_non_null(f2 = fopen(TEST_OUTPUT_FILE, "rb"));
+
+    assert_int_equal(LY_SUCCESS, ly_out_new_file(f1, &out));
+    assert_int_equal(LY_SUCCESS, ly_print(out, "test %s", "print"));
+    assert_int_equal(10, ly_out_printed(out));
+    ly_print_flush(out);
+    assert_non_null(fgets(buf, 31, f2));
+    assert_string_equal("test print", buf);
+    assert_int_equal(0, fseek(f2, 0, SEEK_SET));
+    assert_int_equal(LY_SUCCESS, ly_out_reset(out));
+
+    assert_int_equal(LY_SUCCESS, ly_write(out, "rewrite", 8));
+    assert_int_equal(8, ly_out_printed(out));
+    ly_print_flush(out);
+    assert_non_null(fgets(buf, 31, f2));
+    assert_string_equal("rewrite", buf);
+
+    fclose(f2);
+    ly_out_free(out, NULL, 1);
+}
+
+static void
+test_output_filepath(void **UNUSED(state))
+{
+    struct ly_out *out = NULL;
+    FILE *f1;
+    char buf[31] = {0};
+    const char *fp1 = TEST_OUTPUT_FILE;
+    const char *fp2 = TEST_OUTPUT_FILE2;
+
+    /* manipulate with the handler */
+    assert_int_equal(LY_SUCCESS, ly_out_new_filepath(fp1, &out));
+    assert_int_equal(LY_OUT_FILEPATH, ly_out_type(out));
+    assert_ptr_equal(NULL, ly_out_filepath(out, fp2));
+    assert_string_equal(fp2, ly_out_filepath(out, NULL));
+    assert_ptr_equal(NULL, ly_out_filepath(out, fp1));
+    ly_out_free(out, NULL, 0);
+    assert_int_equal(LY_SUCCESS, ly_out_new_filepath(fp1, &out));
+    ly_out_free(out, NULL, 1);
+
+    /* writing data */
+    assert_non_null(f1 = fopen(fp1, "rb"));
+
+    assert_int_equal(LY_SUCCESS, ly_out_new_filepath(fp1, &out));
+    assert_int_equal(LY_SUCCESS, ly_print(out, "test %s", "print"));
+    assert_int_equal(10, ly_out_printed(out));
+    ly_print_flush(out);
+    assert_non_null(fgets(buf, 31, f1));
+    assert_string_equal("test print", buf);
+    assert_int_equal(0, fseek(f1, 0, SEEK_SET));
+    assert_int_equal(LY_SUCCESS, ly_out_reset(out));
+
+    assert_int_equal(LY_SUCCESS, ly_write(out, "rewrite", 8));
+    assert_int_equal(8, ly_out_printed(out));
+    ly_print_flush(out);
+    assert_non_null(fgets(buf, 31, f1));
+    assert_string_equal("rewrite", buf);
+
+    fclose(f1);
+    ly_out_free(out, NULL, 1);
+}
+
+static ssize_t
+write_clb(void *user_data, const void *buf, size_t count)
+{
+    return write((uintptr_t)user_data, buf, count);
+}
+
+void
+close_clb(void *arg)
+{
+    close((uintptr_t)arg);
+}
+
+static void
+test_output_clb(void **UNUSED(state))
+{
+    struct ly_out *out = NULL;
+    int fd1, fd2;
+    char buf[31] = {0};
+
+    assert_int_not_equal(-1, fd1 = open(TEST_OUTPUT_FILE, O_RDWR));
+    assert_int_not_equal(-1, fd2 = open(TEST_OUTPUT_FILE, O_RDWR));
+
+    /* manipulate with the handler */
+    assert_int_equal(LY_SUCCESS, ly_out_new_clb(write_clb, (void *)(intptr_t)fd1, &out));
+    assert_int_equal(LY_OUT_CALLBACK, ly_out_type(out));
+    assert_ptr_equal(fd1, ly_out_clb_arg(out, (void *)(intptr_t)fd2));
+    assert_ptr_equal(fd2, ly_out_clb_arg(out, NULL));
+    assert_ptr_equal(fd2, ly_out_clb_arg(out, (void *)(intptr_t)fd1));
+    assert_ptr_equal(write_clb, ly_out_clb(out, write_clb));
+    ly_out_free(out, NULL, 0);
+    assert_int_equal(0, close(fd2));
+    assert_int_equal(LY_SUCCESS, ly_out_new_clb(write_clb, (void *)(intptr_t)fd1, &out));
+    ly_out_free(out, close_clb, 0);
+
+    /* writing data */
+    assert_int_not_equal(-1, fd1 = open(TEST_OUTPUT_FILE, O_RDWR));
+    assert_int_not_equal(-1, fd2 = open(TEST_OUTPUT_FILE, O_RDWR));
+    /* truncate file to start with no data */
+    assert_int_equal(0, ftruncate(fd1, 0));
+
+    assert_int_equal(LY_SUCCESS, ly_out_new_clb(write_clb, (void *)(intptr_t)fd1, &out));
+    assert_int_equal(LY_SUCCESS, ly_print(out, "test %s", "print"));
+    assert_int_equal(10, ly_out_printed(out));
+    assert_int_equal(10, read(fd2, buf, 30));
+    assert_string_equal("test print", buf);
+
+    close(fd2);
+    ly_out_free(out, close_clb, 0);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_input_mem),
+        UTEST(test_input_fd, setup_files, teardown_files),
+        UTEST(test_input_file, setup_files, teardown_files),
+        UTEST(test_input_filepath, setup_files, teardown_files),
+        UTEST(test_output_mem),
+        UTEST(test_output_fd, setup_files, teardown_files),
+        UTEST(test_output_file, setup_files, teardown_files),
+        UTEST(test_output_filepath, setup_files, teardown_files),
+        UTEST(test_output_clb, setup_files, teardown_files),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/basic/test_json.c b/tests/utests/basic/test_json.c
new file mode 100644
index 0000000..1896b8a
--- /dev/null
+++ b/tests/utests/basic/test_json.c
@@ -0,0 +1,794 @@
+/*
+ * @file test_json.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for a generic JSON parser
+ *
+ * Copyright (c) 2020 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "context.h"
+#include "in_internal.h"
+#include "json.h"
+static void
+test_general(void **state)
+{
+    struct lyjson_ctx *jsonctx;
+    struct ly_in *in;
+    const char *str;
+
+    /* empty */
+    str = "";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_END, lyjson_ctx_status(jsonctx, 0));
+    lyjson_ctx_free(jsonctx);
+
+    str = "  \n\t \n";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_END, lyjson_ctx_status(jsonctx, 0));
+    lyjson_ctx_free(jsonctx);
+
+    /* constant values */
+    str = "true";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_TRUE, lyjson_ctx_status(jsonctx, 0));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_END, lyjson_ctx_status(jsonctx, 0));
+    lyjson_ctx_free(jsonctx);
+
+    str = "false";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_FALSE, lyjson_ctx_status(jsonctx, 0));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_END, lyjson_ctx_status(jsonctx, 0));
+    lyjson_ctx_free(jsonctx);
+
+    str = "null";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NULL, lyjson_ctx_status(jsonctx, 0));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_END, lyjson_ctx_status(jsonctx, 0));
+    lyjson_ctx_free(jsonctx);
+
+    ly_in_free(in, 0);
+}
+
+static void
+test_number(void **state)
+{
+    struct lyjson_ctx *jsonctx;
+    struct ly_in *in;
+    const char *str;
+
+    /* simple value */
+    str = "11";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("11", jsonctx->value);
+    assert_int_equal(2, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    /* fraction number */
+    str = "37.7668";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("37.7668", jsonctx->value);
+    assert_int_equal(7, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    /* negative number */
+    str = "-122.3959";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("-122.3959", jsonctx->value);
+    assert_int_equal(9, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    /* integer, positive exponent */
+    str = "550E3";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("550000", jsonctx->value);
+    assert_int_equal(6, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "-550E3";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("-550000", jsonctx->value);
+    assert_int_equal(7, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    /* integer, negative exponent */
+    str = "1E-1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.1", jsonctx->value);
+    assert_int_equal(3, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "15E-1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("1.5", jsonctx->value);
+    assert_int_equal(3, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "-15E-1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("-1.5", jsonctx->value);
+    assert_int_equal(4, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "16E-2";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.16", jsonctx->value);
+    assert_int_equal(4, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "-16E-2";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("-0.16", jsonctx->value);
+    assert_int_equal(5, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "17E-3";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.017", jsonctx->value);
+    assert_int_equal(5, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "-17E-3";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("-0.017", jsonctx->value);
+    assert_int_equal(6, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "21000E-2";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("210", jsonctx->value);
+    assert_int_equal(3, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "21000E-4";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("2.1", jsonctx->value);
+    assert_int_equal(3, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "21000E-7";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.0021", jsonctx->value);
+    assert_int_equal(6, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    /* decimal number, positive exponent */
+    str = "5.087E1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("50.87", jsonctx->value);
+    assert_int_equal(5, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "-5.087E1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("-50.87", jsonctx->value);
+    assert_int_equal(6, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "5.087E5";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("508700", jsonctx->value);
+    assert_int_equal(6, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "59.1e+1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("591", jsonctx->value);
+    assert_int_equal(3, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "0.005087E1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.05087", jsonctx->value);
+    assert_int_equal(7, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "0.005087E2";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.5087", jsonctx->value);
+    assert_int_equal(6, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "0.005087E6";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("5087", jsonctx->value);
+    assert_int_equal(4, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "0.05087E6";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("50870", jsonctx->value);
+    assert_int_equal(5, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "0.005087E8";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("508700", jsonctx->value);
+    assert_int_equal(6, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    /* decimal number, negative exponent */
+    str = "35.94e-1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("3.594", jsonctx->value);
+    assert_int_equal(5, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "-35.94e-1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("-3.594", jsonctx->value);
+    assert_int_equal(6, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "35.94e-2";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.3594", jsonctx->value);
+    assert_int_equal(6, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "35.94e-3";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.03594", jsonctx->value);
+    assert_int_equal(7, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "0.3594e-1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.03594", jsonctx->value);
+    assert_int_equal(7, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "0.03594e-1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.003594", jsonctx->value);
+    assert_int_equal(8, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "0.003594e-1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.0003594", jsonctx->value);
+    assert_int_equal(9, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "0.3594e-2";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.003594", jsonctx->value);
+    assert_int_equal(8, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "0.03594e-2";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.0003594", jsonctx->value);
+    assert_int_equal(9, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "0.003594e-2";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.00003594", jsonctx->value);
+    assert_int_equal(10, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    /* zero */
+    str = "0";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_true(jsonctx->value[0] == '0');
+    assert_int_equal(1, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "-0";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_true(jsonctx->value[0] == '-');
+    assert_true(jsonctx->value[1] == '0');
+    assert_int_equal(2, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "94E0";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_true(jsonctx->value[0] == '9');
+    assert_true(jsonctx->value[1] == '4');
+    assert_int_equal(2, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "0E2";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_true(jsonctx->value[0] == '0');
+    assert_int_equal(1, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "-0E2";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_true(jsonctx->value[0] == '-');
+    assert_true(jsonctx->value[1] == '0');
+    assert_int_equal(2, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "5.320e+2";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("532", jsonctx->value);
+    assert_int_equal(3, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    str = "5.320e-1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_NUMBER, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("0.532", jsonctx->value);
+    assert_int_equal(5, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    /* various invalid inputs */
+    str = "-x";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Invalid character in JSON Number value (\"x\").", "Line number 1.");
+
+    str = "  -";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Unexpected end-of-input.", "Line number 1.");
+
+    str = "--1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Invalid character in JSON Number value (\"-\").", "Line number 1.");
+
+    str = "+1";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Invalid character sequence \"+1\", expected a JSON value.", "Line number 1.");
+
+    str = "  1.x ";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Invalid character in JSON Number value (\"x\").", "Line number 1.");
+
+    str = "1.";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Unexpected end-of-input.", "Line number 1.");
+
+    str = "  1eo ";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Invalid character in JSON Number value (\"o\").", "Line number 1.");
+
+    str = "1e";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Unexpected end-of-input.", "Line number 1.");
+
+    str = "1E1000";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Number encoded as a string exceeded the LY_NUMBER_MAXLEN limit.", "Line number 1.");
+
+    str = "1e9999999999999999999";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Exponent out-of-bounds in a JSON Number value (1e9999999999999999999).", "Line number 1.");
+
+    str = "1.1e66000";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Exponent out-of-bounds in a JSON Number value (1.1e66000).", "Line number 1.");
+
+    str = "1.1e-66000";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Exponent out-of-bounds in a JSON Number value (1.1e-66000).", "Line number 1.");
+
+    str = "-2.1e0.";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Unexpected character \".\" after JSON number.", "Line number 1.");
+
+    ly_in_free(in, 0);
+}
+
+/* now string is tested in file ./tests/utests/types/string.c */
+static void
+test_string(void **state)
+{
+    struct lyjson_ctx *jsonctx;
+    struct ly_in *in = NULL;
+    const char *str;
+
+    str = "";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+
+#if 0
+    /* simple string */
+    str = "\"hello\"";
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_STRING, lyjson_ctx_status(jsonctx, 0));
+    assert_ptr_equal(&str[1], jsonctx->value);
+    assert_int_equal(5, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    /* 4-byte utf8 character */
+    str = "\"\\t𠜎\"";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_STRING, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("\t𠜎", jsonctx->value);
+    assert_int_equal(5, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    /* valid escape sequences - note that here it mixes valid JSON string characters (RFC 7159, sec. 7) and
+     * valid characters in YANG string type (RFC 7950, sec. 9.4). Since the latter is a subset of JSON string,
+     * the YANG string type's restrictions apply to the JSON escape sequences */
+    str = "\"\\\" \\\\ \\r \\/ \\n \\t \\u20ac\"";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_STRING, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("\" \\ \r / \n \t €", jsonctx->value);
+    assert_int_equal(15, jsonctx->value_len);
+    assert_int_equal(1, jsonctx->dynamic);
+    lyjson_ctx_free(jsonctx);
+
+    /* backspace and form feed are valid JSON escape sequences, but the control characters they represents are not allowed values for YANG string type */
+    str = "\"\\b\"";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Invalid character reference \"\\b\" (0x00000008).", "Line number 1.");
+
+    str = "\"\\f\"";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Invalid character reference \"\\f\" (0x0000000c).", "Line number 1.");
+#endif
+
+    /* unterminated string */
+    str = "\"unterminated string";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Missing quotation-mark at the end of a JSON string.", "Line number 1.");
+#if 0
+    /* invalid escape sequence */
+    str = "\"char \\x \"";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Invalid character escape sequence \\x.", "Line number 1.");
+
+    /* new line is allowed only as escaped character in JSON */
+    str = "\"\n\"";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Invalid character in JSON string \"\n\" (0x0000000a).", "Line number 1.");
+#endif
+
+    ly_in_free(in, 0);
+}
+
+static void
+test_object(void **state)
+{
+    struct lyjson_ctx *jsonctx;
+    struct ly_in *in;
+    const char *str;
+
+    /* empty */
+    str = "  { }  ";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_OBJECT_EMPTY, lyjson_ctx_status(jsonctx, 0));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_END, lyjson_ctx_status(jsonctx, 0));
+    lyjson_ctx_free(jsonctx);
+
+    /* simple value */
+    str = "{\"name\" : \"Radek\"}";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_OBJECT, lyjson_ctx_status(jsonctx, 0));
+    assert_ptr_equal(&str[2], jsonctx->value);
+    assert_int_equal(4, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    assert_string_equal("\"Radek\"}", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_STRING, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("Radek\"}", jsonctx->value);
+    assert_int_equal(5, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    assert_string_equal("}", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_OBJECT_CLOSED, lyjson_ctx_status(jsonctx, 0));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_END, lyjson_ctx_status(jsonctx, 0));
+    lyjson_ctx_free(jsonctx);
+
+    /* two values */
+    str = "{\"smart\" : true,\"handsom\":false}";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_OBJECT, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("smart\" : true,\"handsom\":false}", jsonctx->value);
+    assert_int_equal(5, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    assert_string_equal("true,\"handsom\":false}", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_TRUE, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal(",\"handsom\":false}", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_OBJECT, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("handsom\":false}", jsonctx->value);
+    assert_int_equal(7, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    assert_string_equal("false}", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_FALSE, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("}", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_OBJECT_CLOSED, lyjson_ctx_status(jsonctx, 0));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_END, lyjson_ctx_status(jsonctx, 0));
+    lyjson_ctx_free(jsonctx);
+
+    /* inherited objects */
+    str = "{\"person\" : {\"name\":\"Radek\"}}";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_OBJECT, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("person\" : {\"name\":\"Radek\"}}", jsonctx->value);
+    assert_int_equal(6, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    assert_string_equal("{\"name\":\"Radek\"}}", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_OBJECT, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("name\":\"Radek\"}}", jsonctx->value);
+    assert_int_equal(4, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    assert_string_equal("\"Radek\"}}", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_STRING, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("Radek\"}}", jsonctx->value);
+    assert_int_equal(5, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    assert_string_equal("}}", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_OBJECT_CLOSED, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("}", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_OBJECT_CLOSED, lyjson_ctx_status(jsonctx, 0));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_END, lyjson_ctx_status(jsonctx, 0));
+    lyjson_ctx_free(jsonctx);
+
+    /* new line is allowed only as escaped character in JSON */
+    str = "{ unquoted : \"data\"}";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_EVALID, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    CHECK_LOG_CTX("Invalid character sequence \"unquoted : \"data\"}\", expected a JSON object's member.", "Line number 1.");
+
+    ly_in_free(in, 0);
+}
+
+static void
+test_array(void **state)
+{
+    struct lyjson_ctx *jsonctx;
+    struct ly_in *in;
+    const char *str;
+
+    /* empty */
+    str = "  [  ]  ";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_ARRAY_EMPTY, lyjson_ctx_status(jsonctx, 0));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_END, lyjson_ctx_status(jsonctx, 0));
+    lyjson_ctx_free(jsonctx);
+
+    /* simple value */
+    str = "[ null]";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_ARRAY, lyjson_ctx_status(jsonctx, 0));
+    assert_null(jsonctx->value);
+    assert_int_equal(0, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    assert_string_equal("null]", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_NULL, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("]", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_ARRAY_CLOSED, lyjson_ctx_status(jsonctx, 0));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_END, lyjson_ctx_status(jsonctx, 0));
+    lyjson_ctx_free(jsonctx);
+
+    /* two values */
+    str = "[{\"a\":null},\"x\"]";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LYJSON_ARRAY, lyjson_ctx_status(jsonctx, 0));
+    assert_null(jsonctx->value);
+    assert_int_equal(0, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    assert_string_equal("{\"a\":null},\"x\"]", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_OBJECT, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("a\":null},\"x\"]", jsonctx->value);
+    assert_int_equal(1, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    assert_string_equal("null},\"x\"]", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_NULL, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("},\"x\"]", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_OBJECT_CLOSED, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal(",\"x\"]", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_STRING, lyjson_ctx_status(jsonctx, 0));
+    assert_string_equal("x\"]", jsonctx->value);
+    assert_int_equal(1, jsonctx->value_len);
+    assert_int_equal(0, jsonctx->dynamic);
+    assert_string_equal("]", jsonctx->in->current);
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_ARRAY_CLOSED, lyjson_ctx_status(jsonctx, 0));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_next(jsonctx, NULL));
+    assert_int_equal(LYJSON_END, lyjson_ctx_status(jsonctx, 0));
+    lyjson_ctx_free(jsonctx);
+
+    /* new line is allowed only as escaped character in JSON */
+    str = "[ , null]";
+    assert_non_null(ly_in_memory(in, str));
+    assert_int_equal(LY_SUCCESS, lyjson_ctx_new(UTEST_LYCTX, in, 0, &jsonctx));
+    assert_int_equal(LY_EVALID, lyjson_ctx_next(jsonctx, NULL));
+    CHECK_LOG_CTX("Invalid character sequence \", null]\", expected a JSON value.", "Line number 1.");
+    lyjson_ctx_free(jsonctx);
+
+    ly_in_free(in, 0);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_general),
+        UTEST(test_number),
+        UTEST(test_string),
+        UTEST(test_object),
+        UTEST(test_array),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/basic/test_plugins.c b/tests/utests/basic/test_plugins.c
new file mode 100644
index 0000000..7f3fe40
--- /dev/null
+++ b/tests/utests/basic/test_plugins.c
@@ -0,0 +1,109 @@
+/*
+ * @file test_plugins.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for functions from set.c
+ *
+ * Copyright (c) 2018 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "config.h"
+#include "plugins.h"
+#include "plugins_internal.h"
+
+const char *simple = "module libyang-plugins-simple {"
+        "  namespace urn:libyang:tests:plugins:simple;"
+        "  prefix s;"
+        "  typedef note { type string; }"
+        "  extension hint { argument value; }"
+        "  leaf test {"
+        "    type s:note {length 255;}"
+        "    s:hint \"some hint here\";"
+        "  }"
+        "}";
+
+static void
+test_add_invalid(void **state)
+{
+    (void)state;
+    assert_int_equal(LY_ESYS, lyplg_add(TESTS_BIN "/plugins/plugin_does_not_exist" LYPLG_SUFFIX));
+}
+
+static void
+test_add_simple(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_node_leaf *leaf;
+    struct lyplg_ext_record *record_e;
+    struct lyplg_type *plugin_t;
+
+    assert_int_equal(LY_SUCCESS, lyplg_add(TESTS_BIN "/plugins/plugin_simple" LYPLG_SUFFIX));
+
+    UTEST_ADD_MODULE(simple, LYS_IN_YANG, NULL, &mod);
+
+    leaf = (struct lysc_node_leaf *)mod->compiled->data;
+    assert_int_equal(LYS_LEAF, leaf->nodetype);
+
+    assert_non_null(plugin_t = lyplg_type_plugin_find("libyang-plugins-simple", NULL, "note"));
+    assert_string_equal("ly2 simple test v1", plugin_t->id);
+    assert_ptr_equal(leaf->type->plugin, plugin_t);
+
+    assert_int_equal(1, LY_ARRAY_COUNT(leaf->exts));
+    assert_non_null(record_e = lyplg_ext_record_find("libyang-plugins-simple", NULL, "hint"));
+    assert_string_equal("ly2 simple test v1", record_e->plugin.id);
+    assert_ptr_equal(leaf->exts[0].def->plugin, &record_e->plugin);
+
+    /* the second loading of the same plugin - still success */
+    assert_int_equal(LY_SUCCESS, lyplg_add(TESTS_BIN "/plugins/plugin_simple" LYPLG_SUFFIX));
+}
+
+static void
+test_not_implemented(void **state)
+{
+    struct lys_module *mod;
+    struct lyd_node *tree;
+    const char *schema = "module libyang-plugins-unknown {"
+            "  namespace urn:libyang:tests:plugins:unknown;"
+            "  prefix u;"
+            "  extension myext;"
+            "  typedef mytype { type string;}"
+            "  leaf test {"
+            "    u:myext;"
+            "    type mytype;"
+            "  }"
+            "}";
+    const char *data = "<test xmlns=\"urn:libyang:tests:plugins:unknown\">xxx</test>";
+    char *printed = NULL;
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG_COMPILED, 0));
+    free(printed);
+
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, 0, LYD_VALIDATE_PRESENT, &tree));
+    CHECK_LOG_CTX(NULL, NULL);
+
+    lyd_free_all(tree);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_add_invalid),
+        UTEST(test_add_simple),
+        UTEST(test_not_implemented),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/basic/test_set.c b/tests/utests/basic/test_set.c
new file mode 100644
index 0000000..af39afa
--- /dev/null
+++ b/tests/utests/basic/test_set.c
@@ -0,0 +1,287 @@
+/*
+ * @file test_set.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for functions from set.c
+ *
+ * Copyright (c) 2018 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _POSIX_C_SOURCE 200809L /* strdup */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "set.h"
+
+static void
+test_basics(void **UNUSED(state))
+{
+    struct ly_set *set;
+    char *str;
+    unsigned int u;
+    void *ptr;
+    uint32_t index;
+
+    /* creation - everything is empty */
+    assert_int_equal(LY_SUCCESS, ly_set_new(&set));
+    assert_non_null(set);
+    assert_int_equal(0, set->count);
+    assert_int_equal(0, set->size);
+    assert_null(set->objs);
+
+    /* add a testing object */
+    str = strdup("test string");
+    assert_non_null(str);
+
+    assert_int_equal(LY_SUCCESS, ly_set_add(set, str, 0, NULL));
+    assert_int_not_equal(0, set->size);
+    assert_int_equal(1, set->count);
+    assert_non_null(set->objs);
+    assert_non_null(set->objs[0]);
+
+    /* check the presence of the testing data */
+    assert_int_equal(1, ly_set_contains(set, str, &index));
+    assert_int_equal(0, index);
+    assert_int_equal(0, ly_set_contains(set, str - 1, NULL));
+
+    /* remove data, but keep the set */
+    u = set->size;
+    ptr = set->objs;
+    ly_set_clean(set, free);
+    assert_int_equal(0, set->count);
+    assert_int_equal(u, set->size);
+    assert_ptr_equal(ptr, set->objs);
+
+    /* remove buffer, but keep the set object */
+    ly_set_erase(set, NULL);
+    assert_int_equal(0, set->count);
+    assert_int_equal(0, set->size);
+    assert_ptr_equal(NULL, set->objs);
+
+    /* final cleanup */
+    ly_set_free(set, NULL);
+}
+
+static void
+test_inval(void **state)
+{
+    struct ly_set set;
+
+    memset(&set, 0, sizeof set);
+
+    ly_set_clean(NULL, NULL);
+    CHECK_LOG(NULL, NULL);
+
+    ly_set_erase(NULL, NULL);
+    CHECK_LOG(NULL, NULL);
+
+    ly_set_free(NULL, NULL);
+    CHECK_LOG(NULL, NULL);
+
+    assert_int_equal(LY_EINVAL, ly_set_dup(NULL, NULL, NULL));
+    CHECK_LOG("Invalid argument set (ly_set_dup()).", NULL);
+
+    assert_int_equal(LY_EINVAL, ly_set_add(NULL, NULL, 0, NULL));
+    CHECK_LOG("Invalid argument set (ly_set_add()).", NULL);
+
+    assert_int_equal(LY_EINVAL, ly_set_merge(NULL, NULL, 0, NULL));
+    CHECK_LOG("Invalid argument trg (ly_set_merge()).", NULL);
+    assert_int_equal(LY_SUCCESS, ly_set_merge(&set, NULL, 0, NULL));
+
+    assert_int_equal(LY_EINVAL, ly_set_rm_index(NULL, 0, NULL));
+    CHECK_LOG("Invalid argument set (ly_set_rm_index()).", NULL);
+    assert_int_equal(LY_EINVAL, ly_set_rm_index(&set, 1, NULL));
+    CHECK_LOG("Invalid argument index (ly_set_rm_index()).", NULL);
+
+    assert_int_equal(LY_EINVAL, ly_set_rm(NULL, NULL, NULL));
+    CHECK_LOG("Invalid argument set (ly_set_rm()).", NULL);
+    assert_int_equal(LY_EINVAL, ly_set_rm(&set, NULL, NULL));
+    CHECK_LOG("Invalid argument object (ly_set_rm()).", NULL);
+    assert_int_equal(LY_EINVAL, ly_set_rm(&set, &set, NULL));
+    CHECK_LOG("Invalid argument object (ly_set_rm()).", NULL);
+}
+
+static void
+test_duplication(void **UNUSED(state))
+{
+    struct ly_set *orig, *new;
+    char *str;
+    uint32_t index;
+
+    assert_int_equal(LY_SUCCESS, ly_set_new(&orig));
+    assert_non_null(orig);
+
+    /* add a testing object */
+    str = strdup("test string");
+    assert_non_null(str);
+    assert_int_equal(LY_SUCCESS, ly_set_add(orig, str, 0, &index));
+    assert_int_equal(0, index);
+
+    /* duplicate the set - without duplicator, so the new set will point to the same string */
+    assert_int_equal(LY_SUCCESS, ly_set_dup(orig, NULL, &new));
+    assert_non_null(new);
+    assert_ptr_not_equal(orig, new);
+    assert_int_equal(orig->count, new->count);
+    assert_ptr_equal(orig->objs[0], new->objs[0]);
+
+    ly_set_free(new, NULL);
+
+    /* duplicate the set - with duplicator, so the new set will point to a different buffer with the same content */
+    assert_int_equal(LY_SUCCESS, ly_set_dup(orig, (void *(*)(const void *))strdup, &new));
+    assert_non_null(new);
+    assert_ptr_not_equal(orig, new);
+    assert_int_equal(orig->count, new->count);
+    assert_ptr_not_equal(orig->objs[0], new->objs[0]);
+    assert_string_equal(orig->objs[0], new->objs[0]);
+
+    /* cleanup */
+    ly_set_free(new, free);
+    ly_set_free(orig, free);
+}
+
+static void
+test_add(void **UNUSED(state))
+{
+    uint32_t u, index;
+    char *str = "test string";
+    struct ly_set set;
+
+    memset(&set, 0, sizeof set);
+
+    /* add a testing object */
+    assert_int_equal(LY_SUCCESS, ly_set_add(&set, str, 0, &index));
+    assert_int_equal(0, index);
+
+    /* test avoiding data duplicities */
+    assert_int_equal(LY_SUCCESS, ly_set_add(&set, str, 0, &index));
+    assert_int_equal(0, index);
+    assert_int_equal(1, set.count);
+    assert_int_equal(LY_SUCCESS, ly_set_add(&set, str, 1, &index));
+    assert_int_equal(1, index);
+    assert_int_equal(2, set.count);
+
+    /* test array resizing */
+    u = set.size;
+    for (uint32_t expected_index = 2; expected_index <= u; ++expected_index) {
+        assert_int_equal(LY_SUCCESS, ly_set_add(&set, str, 1, &index));
+        assert_int_equal(expected_index, index);
+    }
+    assert_true(u != set.size);
+
+    /* cleanup */
+    ly_set_erase(&set, NULL);
+}
+
+static void
+test_merge(void **UNUSED(state))
+{
+    char *str1, *str2;
+    struct ly_set one, two;
+
+    memset(&one, 0, sizeof one);
+    memset(&two, 0, sizeof two);
+
+    str1 = strdup("string1");
+    str2 = strdup("string2");
+
+    /* fill first set
+     * - str1 is the same as in two, so it must not be freed! */
+    assert_int_equal(LY_SUCCESS, ly_set_add(&one, str1, 0, NULL));
+
+    /* fill second set */
+    assert_int_equal(LY_SUCCESS, ly_set_add(&two, str1, 0, NULL));
+    assert_int_equal(LY_SUCCESS, ly_set_add(&two, str2, 0, NULL));
+
+    /* merge with checking duplicities - only one item is added into one;
+     * also without duplicating data, so it must not be freed at the end */
+    assert_int_equal(LY_SUCCESS, ly_set_merge(&one, &two, 0, NULL));
+    assert_int_equal(2, one.count);
+    assert_ptr_equal(one.objs[1], two.objs[1]);
+
+    /* clean and re-fill one (now duplicating str1, to allow testing duplicator) */
+    ly_set_clean(&one, NULL);
+    assert_int_equal(LY_SUCCESS, ly_set_add(&one, strdup(str1), 0, NULL));
+
+    /* merge without checking duplicities - two items are added into one;
+     * here also with duplicator */
+    assert_int_equal(LY_SUCCESS, ly_set_merge(&one, &two, 1, (void *(*)(const void *))strdup));
+    assert_int_equal(3, one.count);
+    assert_ptr_not_equal(one.objs[1], two.objs[0]);
+    assert_string_equal(one.objs[1], two.objs[0]);
+
+    /* cleanup */
+    ly_set_erase(&one, free);
+    ly_set_erase(&two, free);
+}
+
+static void
+test_rm(void **UNUSED(state))
+{
+    char *str1, *str2, *str3;
+    struct ly_set set;
+
+    memset(&set, 0, sizeof set);
+
+    /* fill the set */
+    assert_int_equal(LY_SUCCESS, ly_set_add(&set, "string1", 0, NULL));
+    assert_int_equal(LY_SUCCESS, ly_set_add(&set, strdup("string2"), 0, NULL));
+    assert_int_equal(LY_SUCCESS, ly_set_add(&set, "string3", 0, NULL));
+
+    /* remove by index ... */
+    /* ... in the middle ... */
+    assert_int_equal(LY_SUCCESS, ly_set_rm_index(&set, 1, free));
+    assert_int_equal(2, set.count);
+    assert_string_not_equal("string2", set.objs[0]);
+    assert_string_not_equal("string2", set.objs[1]);
+    /* ... last .. */
+    assert_int_equal(LY_SUCCESS, ly_set_rm_index(&set, 1, NULL));
+    assert_int_equal(1, set.count);
+    assert_string_not_equal("string3", set.objs[0]);
+    /* ... first .. */
+    assert_int_equal(LY_SUCCESS, ly_set_rm_index(&set, 0, NULL));
+    assert_int_equal(0, set.count);
+
+    /* fill the set */
+    assert_int_equal(LY_SUCCESS, ly_set_add(&set, str1 = "string1", 0, NULL));
+    assert_int_equal(LY_SUCCESS, ly_set_add(&set, str2 = "string2", 0, NULL));
+    assert_int_equal(LY_SUCCESS, ly_set_add(&set, str3 = strdup("string3"), 0, NULL));
+
+    /* remove by pointer ... */
+    /* ... in the middle ... */
+    assert_int_equal(LY_SUCCESS, ly_set_rm(&set, str2, NULL));
+    assert_int_equal(2, set.count);
+    assert_string_not_equal("string2", set.objs[0]);
+    assert_string_not_equal("string2", set.objs[1]);
+    /* ... last (with destructor) .. */
+    assert_int_equal(LY_SUCCESS, ly_set_rm(&set, str3, free));
+    assert_int_equal(1, set.count);
+    assert_string_not_equal("string3", set.objs[0]);
+    /* ... first .. */
+    assert_int_equal(LY_SUCCESS, ly_set_rm(&set, str1, NULL));
+    assert_int_equal(0, set.count);
+
+    /* cleanup */
+    ly_set_erase(&set, NULL);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_basics),
+        UTEST(test_duplication),
+        UTEST(test_add),
+        UTEST(test_merge),
+        UTEST(test_rm),
+        UTEST(test_inval),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/basic/test_xml.c b/tests/utests/basic/test_xml.c
new file mode 100644
index 0000000..668de4b
--- /dev/null
+++ b/tests/utests/basic/test_xml.c
@@ -0,0 +1,690 @@
+/*
+ * @file test_xml.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for functions from xml.c
+ *
+ * Copyright (c) 2018 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#define _POSIX_C_SOURCE 200809L /* strdup */
+
+#include <string.h>
+
+#include "context.h"
+#include "in_internal.h"
+#include "xml.h"
+
+LY_ERR lyxml_ns_add(struct lyxml_ctx *xmlctx, const char *prefix, size_t prefix_len, char *uri);
+
+static void
+test_element(void **state)
+{
+    struct lyxml_ctx *xmlctx;
+    struct ly_in *in;
+    const char *str;
+
+    /* empty */
+    str = "";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_END, xmlctx->status);
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+
+    /* end element */
+    str = "</element>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_EVALID, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    CHECK_LOG_CTX("Stray closing element tag (\"element\").", "Line number 1.");
+    ly_in_free(in, 0);
+
+    /* no element */
+    UTEST_LOG_CLEAN;
+    str = "no data present";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_EVALID, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    CHECK_LOG_CTX("Invalid character sequence \"no data present\", expected element tag start ('<').", "Line number 1.");
+    ly_in_free(in, 0);
+
+    /* not supported DOCTYPE */
+    str = "<!DOCTYPE greeting SYSTEM \"hello.dtd\"><greeting/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_EVALID, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    CHECK_LOG_CTX("Document Type Declaration not supported.", "Line number 1.");
+    ly_in_free(in, 0);
+
+    /* invalid XML */
+    str = "<!NONSENSE/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_EVALID, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    CHECK_LOG_CTX("Unknown XML section \"<!NONSENSE/>\".", "Line number 1.");
+    ly_in_free(in, 0);
+
+    /* namespace ambiguity */
+    str = "<element xmlns=\"urn1\" xmlns=\"urn2\"/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_EVALID, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    CHECK_LOG_CTX("Duplicate default XML namespaces \"urn1\" and \"urn2\".", "Line number 1.");
+    ly_in_free(in, 0);
+
+    /* prefix duplicate */
+    str = "<element xmlns:a=\"urn1\" xmlns:a=\"urn2\"/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_EVALID, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    CHECK_LOG_CTX("Duplicate XML NS prefix \"a\" used for namespaces \"urn1\" and \"urn2\".", "Line number 1.");
+    ly_in_free(in, 0);
+
+    /* unqualified element */
+    str = "  <  element/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_null(xmlctx->prefix);
+    assert_true(!strncmp("element", xmlctx->name, xmlctx->name_len));
+    assert_int_equal(1, xmlctx->elements.count);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+    assert_true(!strncmp("", xmlctx->value, xmlctx->value_len));
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CLOSE, xmlctx->status);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_END, xmlctx->status);
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+
+    /* element with attribute */
+    str = "  <  element attr=\'x\'/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_true(!strncmp("element", xmlctx->name, xmlctx->name_len));
+    assert_null(xmlctx->prefix);
+    assert_int_equal(1, xmlctx->elements.count);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ATTRIBUTE, xmlctx->status);
+    assert_true(!strncmp("attr", xmlctx->name, xmlctx->name_len));
+    assert_null(xmlctx->prefix);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ATTR_CONTENT, xmlctx->status);
+    assert_int_equal(1, xmlctx->elements.count);
+    assert_true(!strncmp("x", xmlctx->value, xmlctx->value_len));
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CLOSE, xmlctx->status);
+    assert_int_equal(0, xmlctx->elements.count);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_END, xmlctx->status);
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+
+    /* headers and comments */
+    str = "<?xml version=\"1.0\"?>  <!-- comment --> <?TEST xxx?> <element/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_true(!strncmp("element", xmlctx->name, xmlctx->name_len));
+    assert_null(xmlctx->prefix);
+    assert_int_equal(1, xmlctx->elements.count);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CLOSE, xmlctx->status);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_END, xmlctx->status);
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+
+    /* separate opening and closing tags, neamespaced parsed internally */
+    str = "<element xmlns=\"urn\"></element>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_true(!strncmp("element", xmlctx->name, xmlctx->name_len));
+    assert_null(xmlctx->prefix);
+    assert_int_equal(1, xmlctx->elements.count);
+    assert_int_equal(1, xmlctx->ns.count);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CLOSE, xmlctx->status);
+    assert_int_equal(0, xmlctx->elements.count);
+    assert_int_equal(0, xmlctx->ns.count);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_END, xmlctx->status);
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+
+    /* qualified element */
+    str = "  <  yin:element/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_true(!strncmp("element", xmlctx->name, xmlctx->name_len));
+    assert_true(!strncmp("yin", xmlctx->prefix, xmlctx->prefix_len));
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CLOSE, xmlctx->status);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_END, xmlctx->status);
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+
+    /* non-matching closing tag */
+    str = "<yin:element xmlns=\"urn\"></element>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_true(!strncmp("element", xmlctx->name, xmlctx->name_len));
+    assert_true(!strncmp("yin", xmlctx->prefix, xmlctx->prefix_len));
+    assert_int_equal(1, xmlctx->elements.count);
+    assert_int_equal(1, xmlctx->ns.count);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+
+    assert_int_equal(LY_EVALID, lyxml_ctx_next(xmlctx));
+    CHECK_LOG_CTX("Opening (\"yin:element\") and closing (\"element\") elements tag mismatch.", "Line number 1.");
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+
+    /* invalid closing tag */
+    str = "<yin:element xmlns=\"urn\"></yin:element/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LY_EVALID, lyxml_ctx_next(xmlctx));
+    CHECK_LOG_CTX("Invalid character sequence \"/>\", expected element tag termination ('>').", "Line number 1.");
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+
+    /* UTF8 characters */
+    str = "<𠜎€𠜎Øn:𠜎€𠜎Øn/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_true(!strncmp("𠜎€𠜎Øn", xmlctx->name, xmlctx->name_len));
+    assert_true(!strncmp("𠜎€𠜎Øn", xmlctx->prefix, xmlctx->prefix_len));
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CLOSE, xmlctx->status);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_END, xmlctx->status);
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+
+    /* invalid UTF-8 characters */
+    str = "<¢:element>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_EVALID, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    CHECK_LOG_CTX("Identifier \"¢:element>\" starts with an invalid character.", "Line number 1.");
+    ly_in_free(in, 0);
+
+    str = "<yin:c⁐element>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LY_EVALID, lyxml_ctx_next(xmlctx));
+    CHECK_LOG_CTX("Invalid character sequence \"⁐element>\", expected element tag end ('>' or '/>') or an attribute.", "Line number 1.");
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+
+    /* mixed content */
+    str = "<a>text <b>x</b></a>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_true(!strncmp("a", xmlctx->name, xmlctx->name_len));
+    assert_null(xmlctx->prefix);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+    assert_true(!strncmp("text ", xmlctx->value, xmlctx->value_len));
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_true(!strncmp("b", xmlctx->name, xmlctx->name_len));
+    assert_null(xmlctx->prefix);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+    assert_true(!strncmp("x", xmlctx->value, xmlctx->value_len));
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CLOSE, xmlctx->status);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CLOSE, xmlctx->status);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_END, xmlctx->status);
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+
+    /* tag mismatch */
+    str = "<a>text</b>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_true(!strncmp("a", xmlctx->name, xmlctx->name_len));
+    assert_null(xmlctx->prefix);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+    assert_true(!strncmp("text", xmlctx->value, xmlctx->value_len));
+
+    assert_int_equal(LY_EVALID, lyxml_ctx_next(xmlctx));
+    CHECK_LOG_CTX("Opening (\"a\") and closing (\"b\") elements tag mismatch.", "Line number 1.");
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+}
+
+static void
+test_attribute(void **state)
+{
+    const char *str;
+    struct lyxml_ctx *xmlctx;
+    struct ly_in *in;
+    struct lyxml_ns *ns;
+
+    /* not an attribute */
+    str = "<e unknown/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_EVALID, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    CHECK_LOG_CTX("Invalid character sequence \"/>\", expected '='.", "Line number 1.");
+    ly_in_free(in, 0);
+
+    str = "<e xxx=/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_EVALID, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    CHECK_LOG_CTX("Invalid character sequence \"/>\", expected either single or double quotation mark.", "Line number 1.");
+    ly_in_free(in, 0);
+
+    str = "<e xxx\n = yyy/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_EVALID, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    CHECK_LOG_CTX("Invalid character sequence \"yyy/>\", expected either single or double quotation mark.", "Line number 2.");
+    ly_in_free(in, 0);
+
+    /* valid attribute */
+    str = "<e attr=\"val\"";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ATTRIBUTE, xmlctx->status);
+    assert_true(!strncmp("attr", xmlctx->name, xmlctx->name_len));
+    assert_null(xmlctx->prefix);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ATTR_CONTENT, xmlctx->status);
+    assert_true(!strncmp("val", xmlctx->value, xmlctx->value_len));
+    assert_int_equal(xmlctx->ws_only, 0);
+    assert_int_equal(xmlctx->dynamic, 0);
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+
+    /* valid namespace with prefix */
+    str = "<e xmlns:nc\n = \'urn\'/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_int_equal(1, xmlctx->ns.count);
+    ns = (struct lyxml_ns *)xmlctx->ns.objs[0];
+    assert_string_equal(ns->prefix, "nc");
+    assert_string_equal(ns->uri, "urn");
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+}
+
+static void
+test_text(void **state)
+{
+    const char *str;
+    struct lyxml_ctx *xmlctx;
+    struct ly_in *in;
+
+    /* empty attribute value */
+    str = "<e a=\"\"";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ATTRIBUTE, xmlctx->status);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ATTR_CONTENT, xmlctx->status);
+    assert_true(!strncmp("", xmlctx->value, xmlctx->value_len));
+    assert_int_equal(xmlctx->ws_only, 1);
+    assert_int_equal(xmlctx->dynamic, 0);
+    ly_in_free(in, 0);
+
+    /* empty value but in single quotes */
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("=\'\'", &in));
+    xmlctx->in = in;
+    LOG_LOCSET(NULL, NULL, NULL, in);
+    xmlctx->status = LYXML_ATTRIBUTE;
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ATTR_CONTENT, xmlctx->status);
+    assert_true(!strncmp("", xmlctx->value, xmlctx->value_len));
+    assert_int_equal(xmlctx->ws_only, 1);
+    assert_int_equal(xmlctx->dynamic, 0);
+    ly_in_free(in, 0);
+
+    /* empty element content - only formating before defining child */
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(">\n  <y>", &in));
+    xmlctx->in = in;
+    LOG_LOCSET(NULL, NULL, NULL, in);
+    xmlctx->status = LYXML_ELEMENT;
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+    assert_true(!strncmp("\n  ", xmlctx->value, xmlctx->value_len));
+    assert_int_equal(xmlctx->ws_only, 1);
+    assert_int_equal(xmlctx->dynamic, 0);
+    ly_in_free(in, 0);
+
+    /* empty element content is invalid - missing content terminating character < */
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("", &in));
+    xmlctx->in = in;
+    LOG_LOCSET(NULL, NULL, NULL, in);
+    xmlctx->status = LYXML_ELEM_CONTENT;
+    assert_int_equal(LY_EVALID, lyxml_ctx_next(xmlctx));
+    CHECK_LOG_CTX("Unexpected end-of-input.", "Line number 1.");
+    ly_in_free(in, 0);
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("xxx", &in));
+    xmlctx->in = in;
+    LOG_LOCSET(NULL, NULL, NULL, in);
+    xmlctx->status = LYXML_ELEM_CONTENT;
+    assert_int_equal(LY_EVALID, lyxml_ctx_next(xmlctx));
+    CHECK_LOG_CTX("Invalid character sequence \"xxx\", expected element tag start ('<').", "Line number 1.");
+    ly_in_free(in, 0);
+
+    lyxml_ctx_free(xmlctx);
+    LOG_LOCBACK(0, 0, 0, 4);
+
+    /* valid strings */
+    str = "<a>€𠜎Øn \n&lt;&amp;&quot;&apos;&gt; &#82;&#x4f;&#x4B;</a>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+    assert_true(!strncmp("€𠜎Øn \n<&\"\'> ROK", xmlctx->value, xmlctx->value_len));
+    assert_int_equal(xmlctx->ws_only, 0);
+    assert_int_equal(xmlctx->dynamic, 1);
+    free((char *)xmlctx->value);
+    ly_in_free(in, 0);
+
+    /* test using n-bytes UTF8 hexadecimal code points */
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("=\'&#x0024;&#x00A2;&#x20ac;&#x10348;\'", &in));
+    xmlctx->in = in;
+    LOG_LOCSET(NULL, NULL, NULL, in);
+    xmlctx->status = LYXML_ATTRIBUTE;
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ATTR_CONTENT, xmlctx->status);
+    assert_true(!strncmp("$¢€𐍈", xmlctx->value, xmlctx->value_len));
+    assert_int_equal(xmlctx->ws_only, 0);
+    assert_int_equal(xmlctx->dynamic, 1);
+    ly_in_free(in, 0);
+
+    /* CDATA value */
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(">   <![CDATA[    special non-escaped chars <>&\"'  ]]>  </a>", &in));
+    xmlctx->in = in;
+    LOG_LOCSET(NULL, NULL, NULL, in);
+    xmlctx->status = LYXML_ATTR_CONTENT;
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+    assert_true(!strncmp("       special non-escaped chars <>&\"'    ", xmlctx->value, xmlctx->value_len));
+    assert_int_equal(xmlctx->ws_only, 0);
+    assert_int_equal(xmlctx->dynamic, 1);
+    free((char *)xmlctx->value);
+    ly_in_free(in, 0);
+
+    /* invalid characters in string */
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("=\'&#x52\'", &in));
+    xmlctx->in = in;
+    LOG_LOCSET(NULL, NULL, NULL, in);
+    xmlctx->status = LYXML_ATTRIBUTE;
+    assert_int_equal(LY_EVALID, lyxml_ctx_next(xmlctx));
+    CHECK_LOG_CTX("Invalid character sequence \"'\", expected ;.", "Line number 1.");
+    ly_in_free(in, 0);
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("=\"&#82\"", &in));
+    xmlctx->in = in;
+    LOG_LOCSET(NULL, NULL, NULL, in);
+    xmlctx->status = LYXML_ATTRIBUTE;
+    assert_int_equal(LY_EVALID, lyxml_ctx_next(xmlctx));
+    CHECK_LOG_CTX("Invalid character sequence \"\"\", expected ;.", "Line number 1.");
+    ly_in_free(in, 0);
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("=\"&nonsense;\"", &in));
+    xmlctx->in = in;
+    LOG_LOCSET(NULL, NULL, NULL, in);
+    xmlctx->status = LYXML_ATTRIBUTE;
+    assert_int_equal(LY_EVALID, lyxml_ctx_next(xmlctx));
+    CHECK_LOG_CTX("Entity reference \"&nonsense;\" not supported, only predefined references allowed.", "Line number 1.");
+    ly_in_free(in, 0);
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(">&#o122;", &in));
+    xmlctx->in = in;
+    LOG_LOCSET(NULL, NULL, NULL, in);
+    xmlctx->status = LYXML_ELEMENT;
+    assert_int_equal(LY_EVALID, lyxml_ctx_next(xmlctx));
+    CHECK_LOG_CTX("Invalid character reference \"&#o122;\".", "Line number 1.");
+    ly_in_free(in, 0);
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("=\'&#x06;\'", &in));
+    xmlctx->in = in;
+    LOG_LOCSET(NULL, NULL, NULL, in);
+    xmlctx->status = LYXML_ATTRIBUTE;
+    assert_int_equal(LY_EVALID, lyxml_ctx_next(xmlctx));
+    CHECK_LOG_CTX("Invalid character reference \"&#x06;\'\" (0x00000006).", "Line number 1.");
+    ly_in_free(in, 0);
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("=\'&#xfdd0;\'", &in));
+    xmlctx->in = in;
+    LOG_LOCSET(NULL, NULL, NULL, in);
+    xmlctx->status = LYXML_ATTRIBUTE;
+    assert_int_equal(LY_EVALID, lyxml_ctx_next(xmlctx));
+    CHECK_LOG_CTX("Invalid character reference \"&#xfdd0;\'\" (0x0000fdd0).", "Line number 1.");
+    ly_in_free(in, 0);
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory("=\'&#xffff;\'", &in));
+    xmlctx->in = in;
+    LOG_LOCSET(NULL, NULL, NULL, in);
+    xmlctx->status = LYXML_ATTRIBUTE;
+    assert_int_equal(LY_EVALID, lyxml_ctx_next(xmlctx));
+    CHECK_LOG_CTX("Invalid character reference \"&#xffff;\'\" (0x0000ffff).", "Line number 1.");
+    ly_in_free(in, 0);
+
+    lyxml_ctx_free(xmlctx);
+    LOG_LOCBACK(0, 0, 0, 9);
+}
+
+static void
+test_ns(void **state)
+{
+    const char *str;
+    struct lyxml_ctx *xmlctx;
+    struct ly_in *in;
+    const struct lyxml_ns *ns;
+
+    /* opening element1 */
+    str = "<element1/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+
+    /* processing namespace definitions */
+    assert_int_equal(LY_SUCCESS, lyxml_ns_add(xmlctx, NULL, 0, strdup("urn:default")));
+    assert_int_equal(LY_SUCCESS, lyxml_ns_add(xmlctx, "nc", 2, strdup("urn:nc1")));
+    /* simulate adding open element2 into context */
+    xmlctx->elements.count++;
+    /* processing namespace definitions */
+    assert_int_equal(LY_SUCCESS, lyxml_ns_add(xmlctx, "nc", 2, strdup("urn:nc2")));
+    assert_int_equal(3, xmlctx->ns.count);
+    assert_int_not_equal(0, xmlctx->ns.size);
+
+    ns = lyxml_ns_get(&xmlctx->ns, NULL, 0);
+    assert_non_null(ns);
+    assert_null(ns->prefix);
+    assert_string_equal("urn:default", ns->uri);
+
+    ns = lyxml_ns_get(&xmlctx->ns, "nc", 2);
+    assert_non_null(ns);
+    assert_string_equal("nc", ns->prefix);
+    assert_string_equal("urn:nc2", ns->uri);
+
+    /* simulate closing element2 */
+    xmlctx->elements.count--;
+    lyxml_ns_rm(xmlctx);
+    assert_int_equal(2, xmlctx->ns.count);
+
+    ns = lyxml_ns_get(&xmlctx->ns, "nc", 2);
+    assert_non_null(ns);
+    assert_string_equal("nc", ns->prefix);
+    assert_string_equal("urn:nc1", ns->uri);
+
+    /* close element1 */
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(0, xmlctx->ns.count);
+
+    assert_null(lyxml_ns_get(&xmlctx->ns, "nc", 2));
+    assert_null(lyxml_ns_get(&xmlctx->ns, NULL, 0));
+
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+}
+
+static void
+test_ns2(void **state)
+{
+    const char *str;
+    struct lyxml_ctx *xmlctx;
+    struct ly_in *in;
+
+    /* opening element1 */
+    str = "<element1/>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+
+    /* default namespace defined in parent element1 */
+    assert_int_equal(LY_SUCCESS, lyxml_ns_add(xmlctx, NULL, 0, strdup("urn:default")));
+    assert_int_equal(1, xmlctx->ns.count);
+    /* going into child element1 */
+    /* simulate adding open element1 into context */
+    xmlctx->elements.count++;
+    /* no namespace defined, going out (first, simulate closing of so far open element) */
+    xmlctx->elements.count--;
+    lyxml_ns_rm(xmlctx);
+    assert_int_equal(1, xmlctx->ns.count);
+
+    /* nothing else, going out of the parent element1 */
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(0, xmlctx->ns.count);
+
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+}
+
+static void
+test_simple_xml(void **state)
+{
+    struct lyxml_ctx *xmlctx;
+    struct ly_in *in;
+    const char *test_input = "<elem1 attr1=\"value\"> <elem2 attr2=\"value\" /> </elem1>";
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(test_input, &in));
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_new(UTEST_LYCTX, in, &xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_string_equal(xmlctx->in->current, "attr1=\"value\"> <elem2 attr2=\"value\" /> </elem1>");
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ATTRIBUTE, xmlctx->status);
+    assert_string_equal(xmlctx->in->current, "=\"value\"> <elem2 attr2=\"value\" /> </elem1>");
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ATTR_CONTENT, xmlctx->status);
+    assert_string_equal(xmlctx->in->current, "> <elem2 attr2=\"value\" /> </elem1>");
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+    assert_string_equal(xmlctx->in->current, "<elem2 attr2=\"value\" /> </elem1>");
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEMENT, xmlctx->status);
+    assert_string_equal(xmlctx->in->current, "attr2=\"value\" /> </elem1>");
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ATTRIBUTE, xmlctx->status);
+    assert_string_equal(xmlctx->in->current, "=\"value\" /> </elem1>");
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ATTR_CONTENT, xmlctx->status);
+    assert_string_equal(xmlctx->in->current, " /> </elem1>");
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CONTENT, xmlctx->status);
+    assert_string_equal(xmlctx->in->current, "/> </elem1>");
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CLOSE, xmlctx->status);
+    assert_string_equal(xmlctx->in->current, " </elem1>");
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_ELEM_CLOSE, xmlctx->status);
+    assert_string_equal(xmlctx->in->current, "");
+
+    assert_int_equal(LY_SUCCESS, lyxml_ctx_next(xmlctx));
+    assert_int_equal(LYXML_END, xmlctx->status);
+    assert_string_equal(xmlctx->in->current, "");
+
+    lyxml_ctx_free(xmlctx);
+    ly_in_free(in, 0);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_element),
+        UTEST(test_attribute),
+        UTEST(test_text),
+        UTEST(test_ns),
+        UTEST(test_ns2),
+        UTEST(test_simple_xml),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/basic/test_xpath.c b/tests/utests/basic/test_xpath.c
new file mode 100644
index 0000000..b388dc3
--- /dev/null
+++ b/tests/utests/basic/test_xpath.c
@@ -0,0 +1,1071 @@
+/**
+ * @file test_xpath.c
+ * @author: Michal Vasko <mvasko@cesnet.cz>
+ * @brief unit tests for XPath evaluation
+ *
+ * Copyright (c) 2020 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include <string.h>
+
+#include "context.h"
+#include "parser_data.h"
+#include "set.h"
+#include "tests_config.h"
+#include "tree_data.h"
+#include "tree_schema.h"
+
+const char *schema_a =
+        "module a {\n"
+        "    namespace urn:tests:a;\n"
+        "    prefix a;\n"
+        "    yang-version 1.1;\n"
+        "\n"
+        "    identity id_a;\n"
+        "    identity id_b {\n"
+        "        base id_a;\n"
+        "    }\n"
+        "    identity id_c {\n"
+        "        base id_b;\n"
+        "    }\n"
+        "\n"
+        "    list l1 {\n"
+        "        key \"a b\";\n"
+        "        leaf a {\n"
+        "            type string;\n"
+        "        }\n"
+        "        leaf b {\n"
+        "            type string;\n"
+        "        }\n"
+        "        leaf c {\n"
+        "            type string;\n"
+        "        }\n"
+        "    }\n"
+        "    leaf foo {\n"
+        "        type string;\n"
+        "    }\n"
+        "    leaf foo2 {\n"
+        "        type uint8;\n"
+        "    }\n"
+        "    leaf foo3 {\n"
+        "        type identityref {\n"
+        "            base id_a;\n"
+        "        }\n"
+        "    }\n"
+        "    leaf foo4 {\n"
+        "        type decimal64 {\n"
+        "            fraction-digits 5;\n"
+        "        }\n"
+        "    }\n"
+        "    container c {\n"
+        "        leaf x {\n"
+        "            type string;\n"
+        "        }\n"
+        "        list ll {\n"
+        "            key \"a\";\n"
+        "            leaf a {\n"
+        "                type string;\n"
+        "            }\n"
+        "            list ll {\n"
+        "                key \"a\";\n"
+        "                leaf a {\n"
+        "                    type string;\n"
+        "                }\n"
+        "                leaf b {\n"
+        "                    type string;\n"
+        "                }\n"
+        "            }\n"
+        "        }\n"
+        "        leaf-list ll2 {\n"
+        "            type string;\n"
+        "        }\n"
+        "    }\n"
+        "}";
+
+static int
+setup(void **state)
+{
+    UTEST_SETUP;
+
+    UTEST_ADD_MODULE(schema_a, LYS_IN_YANG, NULL, NULL);
+    lys_parse_path(UTEST_LYCTX, TESTS_DIR_MODULES_YANG "/ietf-interfaces@2014-05-08.yang", LYS_IN_YANG, NULL);
+
+    return 0;
+}
+
+static void
+test_predicate(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+    struct ly_set *set;
+
+    data =
+            "<foo2 xmlns=\"urn:tests:a\">50</foo2>"
+            "<l1 xmlns=\"urn:tests:a\">"
+            "  <a>a1</a>"
+            "  <b>b1</b>"
+            "  <c>c1</c>"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">"
+            "  <a>a2</a>"
+            "  <b>b2</b>"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">"
+            "  <a>a3</a>"
+            "  <b>b3</b>"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">"
+            "  <a>a4</a>"
+            "  <b>b4</b>"
+            "  <c>c4</c>"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">"
+            "  <a>a5</a>"
+            "  <b>b5</b>"
+            "  <c>c5</c>"
+            "</l1>"
+            "<c xmlns=\"urn:tests:a\">"
+            "  <x>key2</x>"
+            "  <ll>"
+            "    <a>key1</a>"
+            "    <ll>"
+            "      <a>key11</a>"
+            "      <b>val11</b>"
+            "    </ll>"
+            "    <ll>"
+            "      <a>key12</a>"
+            "      <b>val12</b>"
+            "    </ll>"
+            "    <ll>"
+            "      <a>key13</a>"
+            "      <b>val13</b>"
+            "    </ll>"
+            "  </ll>"
+            "  <ll>"
+            "    <a>key2</a>"
+            "    <ll>"
+            "      <a>key21</a>"
+            "      <b>val21</b>"
+            "    </ll>"
+            "    <ll>"
+            "      <a>key22</a>"
+            "      <b>val22</b>"
+            "    </ll>"
+            "  </ll>"
+            "  <ll>"
+            "    <a>key3</a>"
+            "    <ll>"
+            "      <a>key31</a>"
+            "      <b>val31</b>"
+            "    </ll>"
+            "    <ll>"
+            "      <a>key32</a>"
+            "      <b>val32</b>"
+            "    </ll>"
+            "  </ll>"
+            "</c>";
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, &tree));
+    assert_non_null(tree);
+
+    /* predicate after number */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/foo2[4[3 = 3]]", &set));
+    assert_int_equal(0, set->count);
+    ly_set_free(set, NULL);
+
+    /* reverse axis */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/c/child::ll[2]/preceding::ll[3]", &set));
+    assert_int_equal(1, set->count);
+    assert_string_equal("key11", lyd_get_value(lyd_child(set->dnodes[0])));
+    ly_set_free(set, NULL);
+
+    /* special predicate evaluated using hashes */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:l1[a=concat('a', '1')][b=substring('ab1',2)]", &set));
+    assert_int_equal(1, set->count);
+    ly_set_free(set, NULL);
+
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:c/ll[a=../x]", &set));
+    assert_int_equal(1, set->count);
+    ly_set_free(set, NULL);
+
+    /* cannot use hashes */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:c/ll[a=substring(ll/a,1,4)]", &set));
+    assert_int_equal(3, set->count);
+    ly_set_free(set, NULL);
+
+    /* nested predicate */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:c/a:ll[a:a=string(/a:l1[a:a='foo']/a:a)]/a:a", &set));
+    assert_int_equal(0, set->count);
+    ly_set_free(set, NULL);
+
+    lyd_free_all(tree);
+}
+
+static void
+test_union(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+    struct ly_set *set;
+
+    data =
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a1</a>\n"
+            "    <b>b1</b>\n"
+            "    <c>c1</c>\n"
+            "</l1>\n"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a2</a>\n"
+            "    <b>b2</b>\n"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a3</a>\n"
+            "    <b>b3</b>\n"
+            "    <c>c3</c>\n"
+            "</l1>";
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, &tree));
+    assert_non_null(tree);
+
+    /* Predicate for operand. */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/l1[c[../a = 'a1'] | c]/a", &set));
+    ly_set_free(set, NULL);
+
+    lyd_free_all(tree);
+}
+
+static void
+test_invalid(void **state)
+{
+    const char *data =
+            "<foo2 xmlns=\"urn:tests:a\">50</foo2>";
+    struct lyd_node *tree;
+    struct ly_set *set;
+
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, &tree));
+    assert_non_null(tree);
+
+    assert_int_equal(LY_EVALID, lyd_find_xpath(tree, "/a:foo2[.=]", &set));
+    assert_null(set);
+
+    assert_int_equal(LY_EVALID, lyd_find_xpath(tree, "/a:", &set));
+    assert_null(set);
+
+    lyd_free_all(tree);
+}
+
+static void
+test_hash(void **state)
+{
+    const char *data =
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a1</a>\n"
+            "    <b>b1</b>\n"
+            "    <c>c1</c>\n"
+            "</l1>\n"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a2</a>\n"
+            "    <b>b2</b>\n"
+            "</l1>\n"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a3</a>\n"
+            "    <b>b3</b>\n"
+            "    <c>c3</c>\n"
+            "</l1>\n"
+            "<foo xmlns=\"urn:tests:a\">foo value</foo>\n"
+            "<c xmlns=\"urn:tests:a\">\n"
+            "    <x>val</x>\n"
+            "    <ll>\n"
+            "        <a>val_a</a>\n"
+            "        <ll>\n"
+            "            <a>val_a</a>\n"
+            "            <b>val</b>\n"
+            "        </ll>\n"
+            "        <ll>\n"
+            "            <a>val_b</a>\n"
+            "        </ll>\n"
+            "    </ll>\n"
+            "    <ll>\n"
+            "        <a>val_b</a>\n"
+            "        <ll>\n"
+            "            <a>val_a</a>\n"
+            "        </ll>\n"
+            "        <ll>\n"
+            "            <a>val_b</a>\n"
+            "            <b>val</b>\n"
+            "        </ll>\n"
+            "    </ll>\n"
+            "    <ll>\n"
+            "        <a>val_c</a>\n"
+            "        <ll>\n"
+            "            <a>val_a</a>\n"
+            "        </ll>\n"
+            "        <ll>\n"
+            "            <a>val_b</a>\n"
+            "        </ll>\n"
+            "    </ll>\n"
+            "    <ll2>one</ll2>\n"
+            "    <ll2>two</ll2>\n"
+            "    <ll2>three</ll2>\n"
+            "    <ll2>four</ll2>\n"
+            "</c>";
+    struct lyd_node *tree, *node;
+    struct ly_set *set;
+
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, &tree));
+    assert_non_null(tree);
+
+    /* top-level, so hash table is not ultimately used but instances can be compared based on hashes */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:l1[a='a3'][b='b3']", &set));
+    assert_int_equal(1, set->count);
+
+    node = set->objs[0];
+    assert_string_equal(node->schema->name, "l1");
+    node = lyd_child(node);
+    assert_string_equal(node->schema->name, "a");
+    assert_string_equal(lyd_get_value(node), "a3");
+
+    ly_set_free(set, NULL);
+
+    /* hashes should be used for both searches (well, there are not enough nested ll instances, so technically not true) */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:c/ll[a='val_b']/ll[a='val_b']", &set));
+    assert_int_equal(1, set->count);
+
+    node = set->objs[0];
+    assert_string_equal(node->schema->name, "ll");
+    node = lyd_child(node);
+    assert_string_equal(node->schema->name, "a");
+    assert_string_equal(lyd_get_value(node), "val_b");
+    node = node->next;
+    assert_string_equal(node->schema->name, "b");
+    assert_null(node->next);
+
+    ly_set_free(set, NULL);
+
+    /* hashes are not used */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:c//ll[a='val_b']", &set));
+    assert_int_equal(4, set->count);
+
+    ly_set_free(set, NULL);
+
+    /* hashes used even for leaf-lists */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:c/ll2[. = 'three']", &set));
+    assert_int_equal(1, set->count);
+
+    node = set->objs[0];
+    assert_string_equal(node->schema->name, "ll2");
+    assert_string_equal(lyd_get_value(node), "three");
+
+    ly_set_free(set, NULL);
+
+    /* not found using hashes */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:c/ll[a='val_d']", &set));
+    assert_int_equal(0, set->count);
+
+    ly_set_free(set, NULL);
+
+    /* white-spaces are also ok */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:c/ll[ \na = 'val_c' ]", &set));
+    assert_int_equal(1, set->count);
+
+    ly_set_free(set, NULL);
+
+    lyd_free_all(tree);
+}
+
+static void
+test_toplevel(void **state)
+{
+    const char *schema_b =
+            "module b {\n"
+            "    namespace urn:tests:b;\n"
+            "    prefix b;\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    list l2 {\n"
+            "        key \"a\";\n"
+            "        leaf a {\n"
+            "            type uint16;\n"
+            "        }\n"
+            "        leaf b {\n"
+            "            type uint16;\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    const char *data =
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a1</a>\n"
+            "    <b>b1</b>\n"
+            "    <c>c1</c>\n"
+            "</l1>\n"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a2</a>\n"
+            "    <b>b2</b>\n"
+            "</l1>\n"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a3</a>\n"
+            "    <b>b3</b>\n"
+            "    <c>c3</c>\n"
+            "</l1>\n"
+            "<foo xmlns=\"urn:tests:a\">foo value</foo>\n"
+            "<l2 xmlns=\"urn:tests:b\">\n"
+            "    <a>1</a>\n"
+            "    <b>1</b>\n"
+            "</l2>\n"
+            "<l2 xmlns=\"urn:tests:b\">\n"
+            "    <a>2</a>\n"
+            "    <b>1</b>\n"
+            "</l2>\n"
+            "<l2 xmlns=\"urn:tests:b\">\n"
+            "    <a>3</a>\n"
+            "    <b>1</b>\n"
+            "</l2>";
+    struct lyd_node *tree;
+    struct ly_set *set;
+
+    UTEST_ADD_MODULE(schema_b, LYS_IN_YANG, NULL, NULL);
+
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, &tree));
+    assert_non_null(tree);
+
+    /* all top-level nodes from one module (default container as well) */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:*", &set));
+    assert_int_equal(5, set->count);
+
+    ly_set_free(set, NULL);
+
+    /* all top-level nodes from all modules */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/*", &set));
+    assert_int_equal(8, set->count);
+
+    ly_set_free(set, NULL);
+
+    /* all nodes from one module */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "//a:*", &set));
+    assert_int_equal(13, set->count);
+
+    ly_set_free(set, NULL);
+
+    /* all nodes from all modules */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "//*", &set));
+    assert_int_equal(22, set->count);
+
+    ly_set_free(set, NULL);
+
+    /* all nodes from all modules #2 */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "//.", &set));
+    assert_int_equal(22, set->count);
+
+    ly_set_free(set, NULL);
+
+    lyd_free_all(tree);
+}
+
+static void
+test_atomize(void **state)
+{
+    struct ly_set *set;
+    const struct lys_module *mod;
+
+    mod = ly_ctx_get_module_latest(UTEST_LYCTX, "a");
+    assert_non_null(mod);
+
+    /* some random paths just making sure the API function works */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/a:*", 0, &set));
+    assert_int_equal(6, set->count);
+    ly_set_free(set, NULL);
+
+    /* all nodes from all modules (including internal, which can change easily, so check just the test modules) */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "//.", 0, &set));
+    assert_in_range(set->count, 17, UINT32_MAX);
+    ly_set_free(set, NULL);
+
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/a:c/ll[a='val1']/ll[a='val2']/b", 0, &set));
+    assert_int_equal(6, set->count);
+    ly_set_free(set, NULL);
+
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/ietf-interfaces:interfaces/*", 0, &set));
+    assert_int_equal(2, set->count);
+    ly_set_free(set, NULL);
+
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/*", 0, &set));
+    assert_int_equal(13, set->count);
+    ly_set_free(set, NULL);
+
+    /*
+     * axes
+     */
+
+    /* ancestor */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "//ll[a and b]/a/ancestor::node()", 0, &set));
+    assert_int_equal(6, set->count);
+    ly_set_free(set, NULL);
+
+    /* ancestor-or-self */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "//ll[a and b]/ancestor-or-self::ll", 0, &set));
+    assert_int_equal(5, set->count);
+    ly_set_free(set, NULL);
+
+    /* attribute */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/l1/attribute::key", 0, &set));
+    assert_int_equal(1, set->count);
+    ly_set_free(set, NULL);
+
+    /* child */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/child::l1/child::a", 0, &set));
+    assert_int_equal(2, set->count);
+    ly_set_free(set, NULL);
+
+    /* descendant */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/descendant::c/descendant::b", 0, &set));
+    assert_int_equal(3, set->count);
+    ly_set_free(set, NULL);
+
+    /* descendant-or-self */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/a:*/descendant-or-self::c", 0, &set));
+    assert_int_equal(7, set->count);
+    ly_set_free(set, NULL);
+
+    /* following */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/c/x/following::a", 0, &set));
+    assert_int_equal(4, set->count);
+    ly_set_free(set, NULL);
+
+    /* following-sibling */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/c/x/following-sibling::ll", 0, &set));
+    assert_int_equal(3, set->count);
+    ly_set_free(set, NULL);
+
+    /* parent */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/child::a:*/c/parent::l1", 0, &set));
+    assert_int_equal(7, set->count);
+    ly_set_free(set, NULL);
+
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/child::a:c//..", 0, &set));
+    assert_int_equal(8, set->count);
+    ly_set_free(set, NULL);
+
+    /* preceding */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/c/preceding::a", 0, &set));
+    assert_int_equal(2, set->count);
+    ly_set_free(set, NULL);
+
+    /* preceding-sibling */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/c/ll/preceding-sibling::node()", 0, &set));
+    assert_int_equal(3, set->count);
+    ly_set_free(set, NULL);
+
+    /* self */
+    assert_int_equal(LY_SUCCESS, lys_find_xpath_atoms(UTEST_LYCTX, NULL, "/c/self::c/ll/ll/b/self::b", 0, &set));
+    assert_int_equal(4, set->count);
+    ly_set_free(set, NULL);
+}
+
+static void
+test_canonize(void **state)
+{
+    const char *data =
+            "<foo2 xmlns=\"urn:tests:a\">50</foo2>"
+            "<foo3 xmlns=\"urn:tests:a\" xmlns:a=\"urn:tests:a\">a:id_b</foo3>"
+            "<foo4 xmlns=\"urn:tests:a\">250.5</foo4>";
+    struct lyd_node *tree;
+    struct ly_set *set;
+
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, &tree));
+    assert_non_null(tree);
+
+    /* integer */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:foo2[.='050']", &set));
+    assert_int_equal(1, set->count);
+    ly_set_free(set, NULL);
+
+    /* identityref */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:foo3[.='id_b']", &set));
+    assert_int_equal(1, set->count);
+    ly_set_free(set, NULL);
+
+    /* decimal64 */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:foo4[.='0250.500']", &set));
+    assert_int_equal(1, set->count);
+    ly_set_free(set, NULL);
+
+    lyd_free_all(tree);
+}
+
+static void
+test_derived_from(void **state)
+{
+    const char *data =
+            "<foo3 xmlns=\"urn:tests:a\">id_c</foo3>";
+    struct lyd_node *tree;
+    struct ly_set *set;
+
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, &tree));
+    assert_non_null(tree);
+
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:foo3[derived-from(., 'a:id_b')]", &set));
+    assert_int_equal(1, set->count);
+    ly_set_free(set, NULL);
+
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:foo3[derived-from(., 'a:id_a')]", &set));
+    assert_int_equal(1, set->count);
+    ly_set_free(set, NULL);
+
+    lyd_free_all(tree);
+}
+
+static void
+test_augment(void **state)
+{
+    const char *schema_b =
+            "module b {\n"
+            "    namespace urn:tests:b;\n"
+            "    prefix b;\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    import a {\n"
+            "        prefix a;\n"
+            "    }\n"
+            "\n"
+            "    augment /a:c {\n"
+            "        leaf a {\n"
+            "            type uint16;\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    const char *data =
+            "<c xmlns=\"urn:tests:a\">\n"
+            "    <x>value</x>\n"
+            "    <ll>\n"
+            "        <a>key</a>\n"
+            "    </ll>\n"
+            "    <a xmlns=\"urn:tests:b\">25</a>\n"
+            "    <ll2>c1</ll2>\n"
+            "</c>";
+    struct lyd_node *tree;
+    struct ly_set *set;
+
+    UTEST_ADD_MODULE(schema_b, LYS_IN_YANG, NULL, NULL);
+
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, &tree));
+    assert_non_null(tree);
+
+    /* get all children ignoring their module */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/a:c/*", &set));
+    assert_int_equal(4, set->count);
+
+    ly_set_free(set, NULL);
+
+    lyd_free_all(tree);
+}
+
+static void
+test_variables(void **state)
+{
+    struct lyd_node *tree, *node;
+    struct ly_set *set;
+    const char *data;
+    struct lyxp_var *vars = NULL;
+
+#define LOCAL_SETUP(DATA, TREE) \
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, DATA, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, &TREE)); \
+    assert_non_null(TREE);
+
+#define SET_NODE(NODE, SET, INDEX) \
+    assert_non_null(SET); \
+    assert_true(INDEX < SET->count); \
+    NODE = SET->objs[INDEX];
+
+#define LOCAL_TEARDOWN(SET, TREE, VARS) \
+    ly_set_free(SET, NULL); \
+    lyd_free_all(TREE); \
+    lyxp_vars_free(VARS); \
+    vars = NULL;
+
+    /* Eval variable to number. */
+    data =
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a1</a>\n"
+            "    <b>b1</b>\n"
+            "    <c>c1</c>\n"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a2</a>\n"
+            "    <b>b2</b>\n"
+            "    <c>c2</c>\n"
+            "</l1>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var", "2"));
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath2(tree, "/l1[$var]/a", vars, &set));
+    SET_NODE(node, set, 0);
+    assert_string_equal(lyd_get_value(node), "a2");
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Eval variable to string. */
+    data =
+            "<foo xmlns=\"urn:tests:a\">mstr</foo>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var", "\"mstr\""));
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath2(tree, "/foo[text() = $var]", vars, &set));
+    SET_NODE(node, set, 0);
+    assert_string_equal(lyd_get_value(node), "mstr");
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Eval variable to set of nodes. */
+    data =
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a1</a>\n"
+            "    <b>b1</b>\n"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a2</a>\n"
+            "    <b>b2</b>\n"
+            "    <c>c2</c>\n"
+            "</l1>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var", "c"));
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath2(tree, "/l1[$var]/a", vars, &set));
+    SET_NODE(node, set, 0);
+    assert_string_equal(lyd_get_value(node), "a2");
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Variable in union expr. */
+    data =
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a1</a>\n"
+            "    <b>b1</b>\n"
+            "    <c>c1</c>\n"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a2</a>\n"
+            "    <b>b2</b>\n"
+            "    <c>c2</c>\n"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a3</a>\n"
+            "    <b>b3</b>\n"
+            "    <c>c3</c>\n"
+            "</l1>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var", "c[../a = 'a3']"));
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath2(tree, "/l1[c[../a = 'a1'] | $var]/a", vars, &set));
+    SET_NODE(node, set, 0);
+    assert_string_equal(lyd_get_value(node), "a1");
+    SET_NODE(node, set, 1);
+    assert_string_equal(lyd_get_value(node), "a3");
+    assert_int_equal(set->count, 2);
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Predicate after variable. */
+    data =
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a1</a>\n"
+            "    <b>b1</b>\n"
+            "    <c>c1</c>\n"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a2</a>\n"
+            "    <b>b2</b>\n"
+            "    <c>c2</c>\n"
+            "</l1>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var", "c"));
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath2(tree, "/l1[$var[../a = 'a1']]/a", vars, &set));
+    SET_NODE(node, set, 0);
+    assert_string_equal(lyd_get_value(node), "a1");
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Variable in variable. */
+    data =
+            "<foo xmlns=\"urn:tests:a\">mstr</foo>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var1", "$var2"));
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var2", "\"mstr\""));
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath2(tree, "/foo[text() = $var]", vars, &set));
+    SET_NODE(node, set, 0);
+    assert_string_equal(lyd_get_value(node), "mstr");
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Compare two variables. */
+    data =
+            "<foo xmlns=\"urn:tests:a\">mstr</foo>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var1", "\"str\""));
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var2", "\"str\""));
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath2(tree, "/foo[$var1 = $var2]", vars, &set));
+    SET_NODE(node, set, 0);
+    assert_string_equal(lyd_get_value(node), "mstr");
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Arithmetic operation with variable. */
+    data =
+            "<foo2 xmlns=\"urn:tests:a\">4</foo2>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var1", "2"));
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath2(tree, "/foo2[.= ($var1 * 2)]", vars, &set));
+    SET_NODE(node, set, 0);
+    assert_string_equal(lyd_get_value(node), "4");
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Variable as function parameter. */
+    data =
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a1</a>\n"
+            "    <b>b1</b>\n"
+            "    <c>c1</c>\n"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a2</a>\n"
+            "    <b>b2</b>\n"
+            "</l1>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var", "./c"));
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath2(tree, "/l1[count($var) = 1]/a", vars, &set));
+    SET_NODE(node, set, 0);
+    assert_string_equal(lyd_get_value(node), "a1");
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Variable in path expr. */
+    /* NOTE: The variable can only be at the beginning of the expression path. */
+    data =
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a1</a>\n"
+            "    <b>b1</b>\n"
+            "    <c>c1</c>\n"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a2</a>\n"
+            "    <b>b2</b>\n"
+            "</l1>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var", "/l1"));
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath2(tree, "/l1[$var/a]", vars, &set));
+    assert_int_equal(set->count, 2);
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Variable as function. */
+    data =
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a1</a>\n"
+            "    <b>b1</b>\n"
+            "    <c>c1</c>\n"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a2</a>\n"
+            "    <b>b2</b>\n"
+            "</l1>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var", "position()"));
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath2(tree, "/l1[$var = 2]/a", vars, &set));
+    SET_NODE(node, set, 0);
+    assert_string_equal(lyd_get_value(node), "a2");
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Dynamic change of value. */
+    data =
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a1</a>\n"
+            "    <b>b1</b>\n"
+            "    <c>c1</c>\n"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "    <a>a2</a>\n"
+            "    <b>b2</b>\n"
+            "    <c>c2</c>\n"
+            "</l1>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var", "1"));
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath2(tree, "/l1[$var]/a", vars, &set));
+    SET_NODE(node, set, 0);
+    assert_string_equal(lyd_get_value(node), "a1");
+    ly_set_free(set, NULL);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var", "2"));
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath2(tree, "/l1[$var]/a", vars, &set));
+    SET_NODE(node, set, 0);
+    assert_string_equal(lyd_get_value(node), "a2");
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Variable not defined. */
+    data =
+            "<foo xmlns=\"urn:tests:a\">mstr</foo>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var1", "\"mstr\""));
+    assert_int_equal(LY_ENOTFOUND, lyd_find_xpath2(tree, "/foo[text() = $var55]", vars, &set));
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Syntax error in value. */
+    data =
+            "<foo xmlns=\"urn:tests:a\">mstr</foo>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var", "\""));
+    assert_int_equal(LY_EVALID, lyd_find_xpath2(tree, "/foo[$var]", vars, &set));
+    LOCAL_TEARDOWN(set, tree, vars);
+
+    /* Prefix is not supported. */
+    data =
+            "<foo xmlns=\"urn:tests:a\">mstr</foo>";
+    LOCAL_SETUP(data, tree);
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var", "\""));
+    assert_int_equal(LY_EVALID, lyd_find_xpath2(tree, "/foo[$pref:var]", vars, &set));
+    assert_string_equal("Variable with prefix is not supported.", _UC->err_msg);
+    LOCAL_TEARDOWN(set, tree, vars);
+
+#undef LOCAL_SETUP
+#undef LOCAL_TEARDOWN
+}
+
+static void
+test_axes(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+    struct ly_set *set;
+
+    data =
+            "<l1 xmlns=\"urn:tests:a\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\">\n"
+            "  <a>a1</a>\n"
+            "  <b yang:operation=\"replace\">b1</b>\n"
+            "  <c yang:operation=\"none\">c1</c>\n"
+            "</l1>\n"
+            "<l1 xmlns=\"urn:tests:a\">\n"
+            "  <a>a2</a>\n"
+            "  <b>b2</b>\n"
+            "</l1>"
+            "<l1 xmlns=\"urn:tests:a\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\">\n"
+            "  <a yang:operation=\"none\" yang:key=\"[no-key='no-value']\">a3</a>\n"
+            "  <b>b3</b>\n"
+            "  <c yang:value=\"no-val\">c3</c>\n"
+            "</l1>"
+            "<c xmlns=\"urn:tests:a\">"
+            "  <x>val</x>"
+            "  <ll>"
+            "    <a>key1</a>"
+            "    <ll>"
+            "      <a>key11</a>"
+            "      <b>val11</b>"
+            "    </ll>"
+            "    <ll>"
+            "      <a>key12</a>"
+            "      <b>val12</b>"
+            "    </ll>"
+            "    <ll>"
+            "      <a>key13</a>"
+            "      <b>val13</b>"
+            "    </ll>"
+            "  </ll>"
+            "  <ll>"
+            "    <a>key2</a>"
+            "    <ll>"
+            "      <a>key21</a>"
+            "      <b>val21</b>"
+            "    </ll>"
+            "    <ll>"
+            "      <a>key22</a>"
+            "      <b>val22</b>"
+            "    </ll>"
+            "  </ll>"
+            "</c>";
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, &tree));
+    assert_non_null(tree);
+
+    /* ancestor */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "//ll[a and b]/a/ancestor::node()", &set));
+    assert_int_equal(8, set->count);
+    ly_set_free(set, NULL);
+
+    /* ancestor-or-self */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "//ll[a and b]/ancestor-or-self::ll", &set));
+    assert_int_equal(7, set->count);
+    ly_set_free(set, NULL);
+
+    /* attribute */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/l1/@operation", &set));
+    assert_int_equal(0, set->count);
+    ly_set_free(set, NULL);
+
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/l1/attribute::key", &set));
+    assert_int_equal(0, set->count);
+    ly_set_free(set, NULL);
+
+    /* child */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/child::l1/child::a", &set));
+    assert_int_equal(3, set->count);
+    ly_set_free(set, NULL);
+
+    /* descendant */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/descendant::c/descendant::b", &set));
+    assert_int_equal(5, set->count);
+    ly_set_free(set, NULL);
+
+    /* descendant-or-self */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "//c", &set));
+    assert_int_equal(3, set->count);
+    ly_set_free(set, NULL);
+
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/descendant-or-self::node()/c", &set));
+    assert_int_equal(3, set->count);
+    ly_set_free(set, NULL);
+
+    /* following */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/c/x/following::a", &set));
+    assert_int_equal(7, set->count);
+    ly_set_free(set, NULL);
+
+    /* following-sibling */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/c/x/following-sibling::ll", &set));
+    assert_int_equal(2, set->count);
+    ly_set_free(set, NULL);
+
+    /* parent */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/child::*/c/parent::l1", &set));
+    assert_int_equal(2, set->count);
+    ly_set_free(set, NULL);
+
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/child::c//..", &set));
+    assert_int_equal(8, set->count);
+    ly_set_free(set, NULL);
+
+    /* preceding */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/c/preceding::a", &set));
+    assert_int_equal(3, set->count);
+    ly_set_free(set, NULL);
+
+    /* preceding-sibling */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/c/ll/preceding-sibling::node()", &set));
+    assert_int_equal(2, set->count);
+    ly_set_free(set, NULL);
+
+    /* self */
+    assert_int_equal(LY_SUCCESS, lyd_find_xpath(tree, "/c/self::c/ll/ll/b/self::b", &set));
+    assert_int_equal(5, set->count);
+    ly_set_free(set, NULL);
+
+    lyd_free_all(tree);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_predicate, setup),
+        UTEST(test_union, setup),
+        UTEST(test_invalid, setup),
+        UTEST(test_hash, setup),
+        UTEST(test_toplevel, setup),
+        UTEST(test_atomize, setup),
+        UTEST(test_canonize, setup),
+        UTEST(test_derived_from, setup),
+        UTEST(test_augment, setup),
+        UTEST(test_variables, setup),
+        UTEST(test_axes, setup),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/basic/test_yanglib.c b/tests/utests/basic/test_yanglib.c
new file mode 100644
index 0000000..0349157
--- /dev/null
+++ b/tests/utests/basic/test_yanglib.c
@@ -0,0 +1,144 @@
+/**
+ * @file test_yanglib.c
+ * @author: Michal Vasko <mvasko@cesnet.cz>
+ * @brief unit tests for ietf-yang-library data
+ *
+ * Copyright (c) 2020 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include <string.h>
+
+#include "context.h"
+#include "in.h"
+#include "log.h"
+#include "set.h"
+#include "tests_config.h"
+#include "tree_data.h"
+#include "tree_schema.h"
+
+const char *schema_a =
+        "module a {\n"
+        "  namespace urn:tests:a;\n"
+        "  prefix a;\n"
+        "  yang-version 1.1;\n"
+        "\n"
+        "  include a_sub;\n"
+        "\n"
+        "  list l2 {\n"
+        "    key \"a\";\n"
+        "    leaf a {\n"
+        "      type uint16;\n"
+        "    }\n"
+        "    leaf b {\n"
+        "      type uint16;\n"
+        "    }\n"
+        "  }\n"
+        "}";
+const char *schema_b =
+        "module b {\n"
+        "  namespace urn:tests:b;\n"
+        "  prefix b;\n"
+        "  yang-version 1.1;\n"
+        "\n"
+        "  import a {\n"
+        "    prefix a;\n"
+        "  }\n"
+        "\n"
+        "  deviation /a:l2 {\n"
+        "    deviate add {\n"
+        "      max-elements 40;\n"
+        "    }\n"
+        "  }\n"
+        "\n"
+        "  leaf foo {\n"
+        "    type string;\n"
+        "  }\n"
+        "}";
+
+static LY_ERR
+test_imp_clb(const char *mod_name, const char *mod_rev, const char *submod_name, const char *sub_rev, void *user_data,
+        LYS_INFORMAT *format, const char **module_data, void (**free_module_data)(void *model_data, void *user_data))
+{
+    const char *schema_a_sub =
+            "submodule a_sub {\n"
+            "    belongs-to a {\n"
+            "        prefix a;\n"
+            "    }\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    feature feat1;\n"
+            "\n"
+            "    list l3 {\n"
+            "        key \"a\";\n"
+            "        leaf a {\n"
+            "            type uint16;\n"
+            "        }\n"
+            "        leaf b {\n"
+            "            type uint16;\n"
+            "        }\n"
+            "    }\n"
+            "}\n";
+
+    assert_string_equal(mod_name, "a");
+    assert_null(mod_rev);
+    if (!submod_name) {
+        return LY_ENOTFOUND;
+    }
+    assert_string_equal(submod_name, "a_sub");
+    assert_null(sub_rev);
+    assert_null(user_data);
+
+    *format = LYS_IN_YANG;
+    *module_data = schema_a_sub;
+    *free_module_data = NULL;
+    return LY_SUCCESS;
+}
+
+static void
+test_yanglib(void **state)
+{
+    const char *feats[] = {"feat1", NULL};
+    struct lyd_node *tree;
+    struct ly_set *set;
+    LY_ERR ret;
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, NULL);
+    UTEST_ADD_MODULE(schema_a, LYS_IN_YANG, feats, NULL);
+    UTEST_ADD_MODULE(schema_b, LYS_IN_YANG, NULL, NULL);
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_get_yanglib_data(UTEST_LYCTX, &tree, "<<%u>>", ly_ctx_get_change_count(UTEST_LYCTX)));
+    lyd_free_all(tree);
+    assert_int_equal(LY_SUCCESS, ly_ctx_get_yanglib_data(UTEST_LYCTX, &tree, "%u", -10));
+    lyd_free_all(tree);
+    assert_int_equal(LY_SUCCESS, ly_ctx_get_yanglib_data(UTEST_LYCTX, &tree, ""));
+    lyd_free_all(tree);
+    assert_int_equal(LY_SUCCESS, ly_ctx_get_yanglib_data(UTEST_LYCTX, &tree, "%u", ly_ctx_get_change_count(UTEST_LYCTX)));
+
+    /* make sure there is "a" with a submodule and deviation */
+    ret = lyd_find_xpath(tree, "/ietf-yang-library:yang-library/module-set/module[name='a'][submodule/name='a_sub']"
+            "[feature='feat1'][deviation='b']", &set);
+    assert_int_equal(ret, LY_SUCCESS);
+
+    assert_int_equal(set->count, 1);
+    ly_set_free(set, NULL);
+
+    lyd_free_all(tree);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_yanglib),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/data/test_diff.c b/tests/utests/data/test_diff.c
new file mode 100644
index 0000000..1b7592a
--- /dev/null
+++ b/tests/utests/data/test_diff.c
@@ -0,0 +1,1221 @@
+/**
+ * @file test_diff.c
+ * @author Radek Krejci <rkrejci@cesnet.cz>
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief tests for lyd_diff()
+ *
+ * Copyright (c) 2020 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "libyang.h"
+
+#define CHECK_PARSE_LYD(INPUT, MODEL) \
+        CHECK_PARSE_LYD_PARAM(INPUT, LYD_XML, LYD_PARSE_ONLY, 0, LY_SUCCESS, MODEL)
+
+#define CHECK_LYD_STRING(IN_MODEL, TEXT) \
+        CHECK_LYD_STRING_PARAM(IN_MODEL, TEXT, LYD_XML, LYD_PRINT_WITHSIBLINGS)
+
+#define CHECK_PARSE_LYD_DIFF(INPUT_1, INPUT_2, OUT_MODEL) \
+        assert_int_equal(LY_SUCCESS, lyd_diff_siblings(INPUT_1, INPUT_2, 0, &OUT_MODEL));\
+        assert_non_null(OUT_MODEL)
+
+#define TEST_DIFF_3(XML1, XML2, XML3, DIFF1, DIFF2, MERGE) \
+        { \
+            struct lyd_node *data1;\
+            struct lyd_node *data2;\
+            struct lyd_node *data3;\
+        /*create*/\
+            CHECK_PARSE_LYD(XML1, data1);\
+            CHECK_PARSE_LYD(XML2, data2);\
+            CHECK_PARSE_LYD(XML3, data3);\
+        /* diff1 */ \
+            struct lyd_node *diff1;\
+            CHECK_PARSE_LYD_DIFF(data1, data2, diff1); \
+            CHECK_LYD_STRING(diff1, DIFF1); \
+            assert_int_equal(lyd_diff_apply_all(&data1, diff1), LY_SUCCESS); \
+            CHECK_LYD(data1, data2); \
+        /* diff2 */ \
+            struct lyd_node *diff2;\
+            CHECK_PARSE_LYD_DIFF(data2, data3, diff2); \
+            CHECK_LYD_STRING(diff2, DIFF2); \
+            assert_int_equal(lyd_diff_apply_all(&data2, diff2), LY_SUCCESS);\
+            CHECK_LYD(data2, data3);\
+        /* merge */ \
+            assert_int_equal(lyd_diff_merge_all(&diff1, diff2, 0), LY_SUCCESS);\
+            CHECK_LYD_STRING(diff1, MERGE); \
+        /* cleanup */ \
+            lyd_free_all(data1);\
+            lyd_free_all(data2);\
+            lyd_free_all(data3);\
+            lyd_free_all(diff1);\
+            lyd_free_all(diff2);\
+        }
+
+const char *schema1 =
+        "module defaults {\n"
+        "    yang-version 1.1;\n"
+        "    namespace \"urn:libyang:tests:defaults\";\n"
+        "    prefix df;\n"
+        ""
+        "    feature unhide;\n"
+        ""
+        "    typedef defint32 {\n"
+        "        type int32;\n"
+        "        default \"42\";\n"
+        "    }\n"
+        ""
+        "    leaf hiddenleaf {\n"
+        "        if-feature \"unhide\";\n"
+        "        type int32;\n"
+        "        default \"42\";\n"
+        "    }\n"
+        ""
+        "    container df {\n"
+        "        leaf foo {\n"
+        "            type defint32;\n"
+        "        }\n"
+        ""
+        "        leaf hiddenleaf {\n"
+        "            if-feature \"unhide\";\n"
+        "            type int32;\n"
+        "            default \"42\";\n"
+        "        }\n"
+        ""
+        "        container bar {\n"
+        "            presence \"\";\n"
+        "            leaf hi {\n"
+        "                type int32;\n"
+        "                default \"42\";\n"
+        "            }\n"
+        ""
+        "            leaf ho {\n"
+        "                type int32;\n"
+        "                mandatory true;\n"
+        "            }\n"
+        "        }\n"
+        ""
+        "        leaf-list llist {\n"
+        "            type defint32;\n"
+        "            ordered-by user;\n"
+        "        }\n"
+        ""
+        "        list ul {\n"
+        "            key \"l1\";\n"
+        "            ordered-by user;\n"
+        "            leaf l1 {\n"
+        "                type string;\n"
+        "            }\n"
+        ""
+        "            leaf l2 {\n"
+        "                type int32;\n"
+        "            }\n"
+        "        }\n"
+        ""
+        "        leaf-list dllist {\n"
+        "            type uint8;\n"
+        "            default \"1\";\n"
+        "            default \"2\";\n"
+        "            default \"3\";\n"
+        "        }\n"
+        ""
+        "        list list {\n"
+        "            key \"name\";\n"
+        "            leaf name {\n"
+        "                type string;\n"
+        "            }\n"
+        ""
+        "            leaf value {\n"
+        "                type int32;\n"
+        "                default \"42\";\n"
+        "            }\n"
+        "            list list2 {\n"
+        "                key \"name2\";\n"
+        "                leaf name2 {\n"
+        "                    type string;\n"
+        "                }\n"
+        "                leaf value2 {\n"
+        "                    type int32;\n"
+        "                }\n"
+        "            }\n"
+        "        }\n";
+const char *schema2 =
+        "        choice select {\n"
+        "            default \"a\";\n"
+        "            case a {\n"
+        "                choice a {\n"
+        "                    leaf a1 {\n"
+        "                        type int32;\n"
+        "                        default \"42\";\n"
+        "                    }\n"
+        ""
+        "                    leaf a2 {\n"
+        "                        type int32;\n"
+        "                        default \"24\";\n"
+        "                    }\n"
+        "                }\n"
+        "            }\n"
+        ""
+        "            leaf b {\n"
+        "                type string;\n"
+        "            }\n"
+        ""
+        "            container c {\n"
+        "                presence \"\";\n"
+        "                leaf x {\n"
+        "                    type int32;\n"
+        "                    default \"42\";\n"
+        "                }\n"
+        "            }\n"
+        "        }\n"
+        ""
+        "        choice select2 {\n"
+        "            default \"s2b\";\n"
+        "            leaf s2a {\n"
+        "                type int32;\n"
+        "                default \"42\";\n"
+        "            }\n"
+        ""
+        "            case s2b {\n"
+        "                choice s2b {\n"
+        "                    default \"b1\";\n"
+        "                    case b1 {\n"
+        "                        leaf b1_1 {\n"
+        "                            type int32;\n"
+        "                            default \"42\";\n"
+        "                        }\n"
+        ""
+        "                        leaf b1_2 {\n"
+        "                            type string;\n"
+        "                        }\n"
+        ""
+        "                        leaf b1_status {\n"
+        "                            type int32;\n"
+        "                            default \"42\";\n"
+        "                            config false;\n"
+        "                        }\n"
+        "                    }\n"
+        ""
+        "                    leaf b2 {\n"
+        "                        type int32;\n"
+        "                        default \"42\";\n"
+        "                    }\n"
+        "                }\n"
+        "            }\n"
+        "        }\n"
+        "        list kl {\n"
+        "            config \"false\";\n"
+        "            leaf l1 {\n"
+        "                type string;\n"
+        "            }\n"
+        ""
+        "            leaf l2 {\n"
+        "                type int32;\n"
+        "            }\n"
+        "        }\n"
+        ""
+        "        leaf-list kll {\n"
+        "            config \"false\";\n"
+        "            type string;\n"
+        "        }\n"
+        "    }\n"
+        ""
+        "    container hidden {\n"
+        "        leaf foo {\n"
+        "            type int32;\n"
+        "            default \"42\";\n"
+        "        }\n"
+        ""
+        "        leaf baz {\n"
+        "            type int32;\n"
+        "            default \"42\";\n"
+        "        }\n"
+        ""
+        "        leaf papa {\n"
+        "            type int32;\n"
+        "            default \"42\";\n"
+        "            config false;\n"
+        "        }\n"
+        "    }\n"
+        ""
+        "    rpc rpc1 {\n"
+        "        input {\n"
+        "            leaf inleaf1 {\n"
+        "                type string;\n"
+        "            }\n"
+        ""
+        "            leaf inleaf2 {\n"
+        "                type string;\n"
+        "                default \"def1\";\n"
+        "            }\n"
+        "        }\n"
+        ""
+        "        output {\n"
+        "            leaf outleaf1 {\n"
+        "                type string;\n"
+        "                default \"def2\";\n"
+        "            }\n"
+        ""
+        "            leaf outleaf2 {\n"
+        "                type string;\n"
+        "            }\n"
+        "        }\n"
+        "    }\n"
+        ""
+        "    notification notif {\n"
+        "        leaf ntfleaf1 {\n"
+        "            type string;\n"
+        "            default \"def3\";\n"
+        "        }\n"
+        ""
+        "        leaf ntfleaf2 {\n"
+        "            type string;\n"
+        "        }\n"
+        "    }\n"
+        "}\n";
+
+static int
+setup(void **state)
+{
+    char *schema;
+
+    UTEST_SETUP;
+
+    /* create one schema, longer than 4095 chars */
+    schema = malloc(strlen(schema1) + strlen(schema2) + 1);
+    strcpy(schema, schema1);
+    strcat(schema, schema2);
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    free(schema);
+
+    return 0;
+}
+
+static void
+test_invalid(void **state)
+{
+    (void) state;
+    const char *xml = "<df xmlns=\"urn:libyang:tests:defaults\"><foo>42</foo></df>";
+
+    struct lyd_node *model_1;
+
+    CHECK_PARSE_LYD(xml, model_1);
+
+    struct lyd_node *diff = NULL;
+
+    assert_int_equal(lyd_diff_siblings(model_1, lyd_child(model_1), 0, &diff), LY_EINVAL);
+    assert_int_equal(lyd_diff_siblings(NULL, NULL, 0, NULL), LY_EINVAL);
+
+    lyd_free_all(model_1);
+    lyd_free_all(diff);
+}
+
+static void
+test_same(void **state)
+{
+    (void) state;
+    const char *xml =
+            "<nacm xmlns=\"urn:ietf:params:xml:ns:yang:ietf-netconf-acm\">\n"
+            "  <enable-nacm>true</enable-nacm>\n"
+            "  <read-default>permit</read-default>\n"
+            "  <write-default>deny</write-default>\n"
+            "  <exec-default>permit</exec-default>\n"
+            "  <enable-external-groups>true</enable-external-groups>\n"
+            "</nacm><df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <foo>42</foo><b1_1>42</b1_1>\n"
+            "</df><hidden xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <foo>42</foo><baz>42</baz></hidden>\n";
+
+    struct lyd_node *model_1;
+    struct lyd_node *model_2;
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "ietf-netconf-acm", "2018-02-14", NULL));
+
+    CHECK_PARSE_LYD(xml, model_1);
+    CHECK_PARSE_LYD(xml, model_2);
+
+    struct lyd_node *diff = NULL;
+
+    assert_int_equal(lyd_diff_siblings(model_1, model_2, 0, &diff), LY_SUCCESS);
+    assert_null(diff);
+    assert_int_equal(lyd_diff_apply_all(&model_1, diff), LY_SUCCESS);
+    CHECK_LYD(model_1, model_2);
+
+    lyd_free_all(model_1);
+    lyd_free_all(model_2);
+    lyd_free_all(diff);
+}
+
+static void
+test_empty1(void **state)
+{
+    (void) state;
+    const char *xml_in =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <foo>42</foo>\n"
+            "  <b1_1>42</b1_1>\n"
+            "</df>\n"
+            "<hidden xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <foo>42</foo>\n"
+            "  <baz>42</baz>\n"
+            "</hidden>\n";
+
+    struct lyd_node *model_1 = NULL;
+    struct lyd_node *model_2;
+
+    CHECK_PARSE_LYD(xml_in, model_2);
+
+    struct lyd_node *diff;
+
+    CHECK_PARSE_LYD_DIFF(model_1, model_2, diff);
+    CHECK_LYD_STRING(diff,
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"create\">\n"
+            "  <foo>42</foo>\n"
+            "  <b1_1>42</b1_1>\n"
+            "</df>\n"
+            "<hidden xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"create\">\n"
+            "  <foo>42</foo>\n"
+            "  <baz>42</baz>\n"
+            "</hidden>\n");
+    assert_int_equal(lyd_diff_apply_all(&model_1, diff), LY_SUCCESS);
+    CHECK_LYD(model_1, model_2);
+
+    lyd_free_all(model_1);
+    lyd_free_all(model_2);
+    lyd_free_all(diff);
+}
+
+static void
+test_empty2(void **state)
+{
+    (void) state;
+    const char *xml = "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <foo>42</foo>\n"
+            "  <b1_1>42</b1_1>\n"
+            "</df><hidden xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <foo>42</foo>\n"
+            "  <baz>42</baz>\n"
+            "</hidden>\n";
+
+    struct lyd_node *model_1;
+
+    CHECK_PARSE_LYD(xml, model_1);
+
+    struct lyd_node *diff;
+
+    CHECK_PARSE_LYD_DIFF(model_1, NULL, diff);
+    CHECK_LYD_STRING(diff,
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"delete\">\n"
+            "  <foo>42</foo>\n"
+            "  <b1_1>42</b1_1>\n"
+            "</df>\n"
+            "<hidden xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"delete\">\n"
+            "  <foo>42</foo>\n"
+            "  <baz>42</baz>\n"
+            "</hidden>\n");
+
+    assert_int_equal(lyd_diff_apply_all(&model_1, diff), LY_SUCCESS);
+    assert_ptr_equal(model_1, NULL);
+
+    lyd_free_all(diff);
+    lyd_free_all(model_1);
+}
+
+static void
+test_empty_nested(void **state)
+{
+    (void) state;
+    const char *xml = "<df xmlns=\"urn:libyang:tests:defaults\"><foo>42</foo></df>";
+
+    struct lyd_node *model_1;
+
+    CHECK_PARSE_LYD(xml, model_1);
+
+    struct lyd_node *diff = NULL;
+
+    assert_int_equal(lyd_diff_siblings(NULL, NULL, 0, &diff), LY_SUCCESS);
+    assert_null(diff);
+
+    struct lyd_node *diff1;
+
+    CHECK_PARSE_LYD_DIFF(NULL, lyd_child(model_1), diff1);
+    CHECK_LYD_STRING(diff1,
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <foo yang:operation=\"create\">42</foo>\n"
+            "</df>\n");
+
+    struct lyd_node *diff2;
+
+    CHECK_PARSE_LYD_DIFF(lyd_child(model_1), NULL, diff2);
+    CHECK_LYD_STRING(diff2,
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <foo yang:operation=\"delete\">42</foo>\n"
+            "</df>\n");
+
+    lyd_free_all(model_1);
+    lyd_free_all(diff1);
+    lyd_free_all(diff2);
+}
+
+static void
+test_delete_merge(void **state)
+{
+    (void) state;
+    struct lyd_node *diff1, *diff2;
+    const char *xml1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <list>\n"
+            "    <name>a</name>\n"
+            "    <list2 yang:operation=\"delete\">\n"
+            "      <name2>a</name2>\n"
+            "    </list2>\n"
+            "  </list>\n"
+            "</df>\n";
+    const char *xml2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <list yang:operation=\"delete\">\n"
+            "    <name>a</name>\n"
+            "  </list>\n"
+            "</df>\n";
+    const char *xml_merge =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <list yang:operation=\"delete\">\n"
+            "    <name>a</name>\n"
+            "    <list2 yang:operation=\"delete\">\n"
+            "      <name2>a</name2>\n"
+            "    </list2>\n"
+            "  </list>\n"
+            "</df>\n";
+
+    CHECK_PARSE_LYD(xml1, diff1);
+    CHECK_PARSE_LYD(xml2, diff2);
+
+    assert_int_equal(lyd_diff_merge_all(&diff1, diff2, 0), LY_SUCCESS);
+    CHECK_LYD_STRING(diff1, xml_merge);
+
+    lyd_free_all(diff1);
+    lyd_free_all(diff2);
+}
+
+static void
+test_leaf(void **state)
+{
+    (void) state;
+    const char *xml1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <foo>42</foo>\n"
+            "</df>\n"
+            "<hidden xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <foo>42</foo>\n"
+            "  <baz>42</baz>\n"
+            "</hidden>\n";
+    const char *xml2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <foo>41</foo>\n"
+            "  <b1_1>42</b1_1>\n"
+            "</df>\n";
+    const char *xml3 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <foo>40</foo>\n"
+            "</df>\n"
+            "<hidden xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <foo>40</foo>\n"
+            "</hidden>\n";
+    const char *out_diff_1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <foo yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"42\">41</foo>\n"
+            "  <b1_1 yang:operation=\"create\">42</b1_1>\n"
+            "</df>\n"
+            "<hidden xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"delete\">\n"
+            "  <foo>42</foo>\n"
+            "  <baz>42</baz>\n"
+            "</hidden>\n";
+
+    const char *out_diff_2 = "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <foo yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"41\">40</foo>\n"
+            "  <b1_1 yang:operation=\"delete\">42</b1_1>\n"
+            "</df>\n"
+            "<hidden xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"create\">\n"
+            "  <foo>40</foo>\n"
+            "</hidden>\n";
+
+    const char *out_merge =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <foo yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"42\">40</foo>\n"
+            "</df>\n"
+            "<hidden xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <foo yang:operation=\"replace\" yang:orig-value=\"42\" yang:orig-default=\"false\">40</foo>\n"
+            "  <baz yang:operation=\"delete\">42</baz>\n"
+            "</hidden>\n";
+
+    TEST_DIFF_3(xml1, xml2, xml3, out_diff_1, out_diff_2, out_merge);
+}
+
+static void
+test_list(void **state)
+{
+    (void) state;
+    const char *xml1 = "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <list>\n"
+            "    <name>a</name>\n"
+            "    <value>1</value>\n"
+            "  </list>\n"
+            "  <list>\n"
+            "    <name>b</name>\n"
+            "    <value>2</value>\n"
+            "  </list>\n"
+            "</df>\n";
+    const char *xml2 = "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <list>\n"
+            "    <name>b</name>\n"
+            "    <value>-2</value>\n"
+            "  </list>\n"
+            "  <list>\n"
+            "    <name>c</name>\n"
+            "    <value>3</value>\n"
+            "  </list>\n"
+            "</df>\n";
+    const char *xml3 = "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <list>\n"
+            "    <name>b</name>\n"
+            "    <value>-2</value>\n"
+            "  </list>\n"
+            "  <list>\n"
+            "    <name>a</name>\n"
+            "    <value>2</value>\n"
+            "  </list>\n"
+            "</df>\n";
+
+    const char *out_diff_1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <list yang:operation=\"delete\">\n"
+            "    <name>a</name>\n"
+            "    <value>1</value>\n"
+            "  </list>\n"
+            "  <list yang:operation=\"none\">\n"
+            "    <name>b</name>\n"
+            "    <value yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"2\">-2</value>\n"
+            "  </list>\n"
+            "  <list yang:operation=\"create\">\n"
+            "    <name>c</name>\n"
+            "    <value>3</value>\n"
+            "  </list>\n"
+            "</df>\n";
+    const char *out_diff_2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <list yang:operation=\"delete\">\n"
+            "    <name>c</name>\n"
+            "    <value>3</value>\n"
+            "  </list>\n"
+            "  <list yang:operation=\"create\">\n"
+            "    <name>a</name>\n"
+            "    <value>2</value>\n"
+            "  </list>\n"
+            "</df>\n";
+    const char *out_merge =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <list yang:operation=\"none\">\n"
+            "    <name>a</name>\n"
+            "    <value yang:operation=\"replace\" yang:orig-value=\"1\" yang:orig-default=\"false\">2</value>\n"
+            "  </list>\n"
+            "  <list yang:operation=\"none\">\n"
+            "    <name>b</name>\n"
+            "    <value yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"2\">-2</value>\n"
+            "  </list>\n"
+            "</df>\n";
+
+    TEST_DIFF_3(xml1, xml2, xml3, out_diff_1, out_diff_2, out_merge);
+}
+
+static void
+test_userord_llist(void **state)
+{
+    (void) state;
+    const char *xml1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <llist>1</llist>\n"
+            "  <llist>2</llist>\n"
+            "  <llist>3</llist>\n"
+            "  <llist>4</llist>\n"
+            "  <llist>5</llist>\n"
+            "</df>\n";
+    const char *xml2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <llist>1</llist>\n"
+            "  <llist>4</llist>\n"
+            "  <llist>3</llist>\n"
+            "  <llist>2</llist>\n"
+            "  <llist>5</llist>\n"
+            "</df>\n";
+    const char *xml3 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <llist>5</llist>\n"
+            "  <llist>4</llist>\n"
+            "  <llist>3</llist>\n"
+            "  <llist>2</llist>\n"
+            "</df>\n";
+
+    const char *out_diff_1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <llist yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"3\" yang:value=\"1\">4</llist>\n"
+            "  <llist yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"2\" yang:value=\"4\">3</llist>\n"
+            "</df>\n";
+    const char *out_diff_2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <llist yang:operation=\"delete\" yang:orig-value=\"\">1</llist>\n"
+            "  <llist yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"2\" yang:value=\"\">5</llist>\n"
+            "</df>\n";
+    const char *out_merge =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <llist yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"3\" yang:value=\"1\">4</llist>\n"
+            "  <llist yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"2\" yang:value=\"4\">3</llist>\n"
+            "  <llist yang:orig-value=\"\" yang:operation=\"delete\">1</llist>\n"
+            "  <llist yang:orig-default=\"false\" yang:orig-value=\"2\" yang:value=\"\" yang:operation=\"replace\">5</llist>\n"
+            "</df>\n";
+
+    TEST_DIFF_3(xml1, xml2, xml3, out_diff_1, out_diff_2, out_merge);
+}
+
+static void
+test_userord_llist2(void **state)
+{
+    (void) state;
+    const char *xml1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <llist>1</llist>\n"
+            "  <list><name>a</name><value>1</value></list>\n"
+            "  <llist>2</llist>\n"
+            "  <llist>3</llist>\n"
+            "  <llist>4</llist>\n"
+            "</df>\n";
+    const char *xml2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <llist>1</llist>\n"
+            "  <list><name>a</name><value>1</value></list>\n"
+            "  <llist>2</llist>\n"
+            "  <llist>4</llist>\n"
+            "  <llist>3</llist>\n"
+            "</df>\n";
+    const char *xml3 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <llist>4</llist>\n"
+            "  <llist>1</llist>\n"
+            "  <list><name>a</name><value>1</value></list>\n"
+            "  <llist>3</llist>\n"
+            "</df>\n";
+
+    const char *out_diff_1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <llist yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"3\" yang:value=\"2\">4</llist>\n"
+            "</df>\n";
+    const char *out_diff_2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <llist yang:operation=\"delete\" yang:orig-value=\"1\">2</llist>\n"
+            "  <llist yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"1\" yang:value=\"\">4</llist>\n"
+            "</df>\n";
+    const char *out_merge =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <llist yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"3\" yang:value=\"\">4</llist>\n"
+            "  <llist yang:orig-value=\"1\" yang:operation=\"delete\">2</llist>\n"
+            "</df>\n";
+
+    TEST_DIFF_3(xml1, xml2, xml3, out_diff_1, out_diff_2, out_merge);
+}
+
+static void
+test_userord_mix(void **state)
+{
+    (void) state;
+    const char *xml1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <llist>1</llist>\n"
+            "  <llist>2</llist>\n"
+            "  <llist>3</llist>\n"
+            "</df>\n";
+    const char *xml2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <llist>3</llist>\n"
+            "  <llist>1</llist>\n"
+            "</df>\n";
+    const char *xml3 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <llist>1</llist>\n"
+            "  <llist>4</llist>\n"
+            "  <llist>3</llist>\n"
+            "</df>\n";
+
+    const char *out_diff_1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <llist yang:operation=\"delete\" yang:orig-value=\"1\">2</llist>\n"
+            "  <llist yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"1\" yang:value=\"\">3</llist>\n"
+            "</df>\n";
+    const char *out_diff_2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <llist yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"3\" yang:value=\"\">1</llist>\n"
+            "  <llist yang:operation=\"create\" yang:value=\"1\">4</llist>\n"
+            "</df>\n";
+    const char *out_merge =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <llist yang:operation=\"delete\" yang:orig-value=\"1\">2</llist>\n"
+            "  <llist yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"1\" yang:value=\"\">3</llist>\n"
+            "  <llist yang:orig-default=\"false\" yang:orig-value=\"3\" yang:value=\"\" yang:operation=\"replace\">1</llist>\n"
+            "  <llist yang:value=\"1\" yang:operation=\"create\">4</llist>\n"
+            "</df>\n";
+
+    TEST_DIFF_3(xml1, xml2, xml3, out_diff_1, out_diff_2, out_merge);
+}
+
+static void
+test_userord_list(void **state)
+{
+    (void) state;
+    const char *xml1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <ul>\n"
+            "    <l1>a</l1>\n"
+            "    <l2>1</l2>\n"
+            "  </ul>\n"
+            "  <ul>\n"
+            "    <l1>b</l1>\n"
+            "    <l2>2</l2>\n"
+            "  </ul>\n"
+            "  <ul>\n"
+            "    <l1>c</l1>\n"
+            "    <l2>3</l2>\n"
+            "  </ul>\n"
+            "</df>\n";
+    const char *xml2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <ul>\n"
+            "    <l1>a</l1>\n"
+            "    <l2>11</l2>\n"
+            "  </ul>\n"
+            "  <ul>\n"
+            "    <l1>c</l1>\n"
+            "    <l2>3</l2>\n"
+            "  </ul>\n"
+            "</df>\n";
+    const char *xml3 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <ul>\n"
+            "    <l1>c</l1>\n"
+            "    <l2>33</l2>\n"
+            "  </ul>\n"
+            "  <ul>\n"
+            "    <l1>b</l1>\n"
+            "    <l2>2</l2>\n"
+            "  </ul>\n"
+            "</df>\n";
+
+    const char *out_diff_1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <ul>\n"
+            "    <l1>a</l1>\n"
+            "    <l2 yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"1\">11</l2>\n"
+            "  </ul>\n"
+            "  <ul yang:operation=\"delete\" yang:orig-key=\"[l1='a']\">\n"
+            "    <l1>b</l1>\n"
+            "    <l2>2</l2>\n"
+            "  </ul>\n"
+            "</df>\n";
+    const char *out_diff_2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <ul yang:operation=\"delete\" yang:orig-key=\"\">\n"
+            "    <l1>a</l1>\n"
+            "    <l2>11</l2>\n"
+            "  </ul>\n"
+            "  <ul yang:operation=\"none\">\n"
+            "    <l1>c</l1>\n"
+            "    <l2 yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"3\">33</l2>\n"
+            "  </ul>\n"
+            "  <ul yang:operation=\"create\" yang:key=\"[l1='c']\">\n"
+            "    <l1>b</l1>\n"
+            "    <l2>2</l2>\n"
+            "  </ul>\n"
+            "</df>\n";
+    const char *out_merge =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <ul yang:operation=\"delete\">\n"
+            "    <l1>a</l1>\n"
+            "    <l2 yang:operation=\"delete\">1</l2>\n"
+            "  </ul>\n"
+            "  <ul yang:orig-key=\"[l1='a']\" yang:operation=\"replace\" yang:key=\"[l1='c']\">\n"
+            "    <l1>b</l1>\n"
+            "  </ul>\n"
+            "  <ul yang:operation=\"none\">\n"
+            "    <l1>c</l1>\n"
+            "    <l2 yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"3\">33</l2>\n"
+            "  </ul>\n"
+            "</df>\n";
+
+    TEST_DIFF_3(xml1, xml2, xml3, out_diff_1, out_diff_2, out_merge);
+}
+
+static void
+test_userord_list2(void **state)
+{
+    (void) state;
+    const char *xml1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <ul>\n"
+            "    <l1>d</l1>\n"
+            "    <l2>4</l2>\n"
+            "  </ul>\n"
+            "</df>\n";
+    const char *xml2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <ul>\n"
+            "    <l1>c</l1>\n"
+            "    <l2>3</l2>\n"
+            "  </ul>\n"
+            "  <ul>\n"
+            "    <l1>d</l1>\n"
+            "    <l2>4</l2>\n"
+            "  </ul>\n"
+            "</df>\n";
+    const char *xml3 =
+            "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <ul>\n"
+            "    <l1>a</l1>\n"
+            "    <l2>1</l2>\n"
+            "  </ul>\n"
+            "  <ul>\n"
+            "    <l1>b</l1>\n"
+            "    <l2>2</l2>\n"
+            "  </ul>\n"
+            "  <ul>\n"
+            "    <l1>c</l1>\n"
+            "    <l2>3</l2>\n"
+            "  </ul>\n"
+            "  <ul>\n"
+            "    <l1>d</l1>\n"
+            "    <l2>4</l2>\n"
+            "  </ul>\n"
+            "</df>\n";
+
+    const char *out_diff_1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <ul yang:operation=\"create\" yang:key=\"\">\n"
+            "    <l1>c</l1>\n"
+            "    <l2>3</l2>\n"
+            "  </ul>\n"
+            "</df>\n";
+    const char *out_diff_2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <ul yang:operation=\"create\" yang:key=\"\">\n"
+            "    <l1>a</l1>\n"
+            "    <l2>1</l2>\n"
+            "  </ul>\n"
+            "  <ul yang:operation=\"create\" yang:key=\"[l1='a']\">\n"
+            "    <l1>b</l1>\n"
+            "    <l2>2</l2>\n"
+            "  </ul>\n"
+            "</df>\n";
+    const char *out_merge =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <ul yang:operation=\"create\" yang:key=\"\">\n"
+            "    <l1>c</l1>\n"
+            "    <l2>3</l2>\n"
+            "  </ul>\n"
+            "  <ul yang:key=\"\" yang:operation=\"create\">\n"
+            "    <l1>a</l1>\n"
+            "    <l2>1</l2>\n"
+            "  </ul>\n"
+            "  <ul yang:key=\"[l1='a']\" yang:operation=\"create\">\n"
+            "    <l1>b</l1>\n"
+            "    <l2>2</l2>\n"
+            "  </ul>\n"
+            "</df>\n";
+
+    TEST_DIFF_3(xml1, xml2, xml3, out_diff_1, out_diff_2, out_merge);
+}
+
+static void
+test_keyless_list(void **state)
+{
+    (void) state;
+    const char *xml1 = "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <kl>\n"
+            "    <l1>a</l1>\n"
+            "    <l2>1</l2>\n"
+            "  </kl>\n"
+            "  <kl>\n"
+            "    <l1>b</l1>\n"
+            "    <l2>2</l2>\n"
+            "  </kl>\n"
+            "  <kl>\n"
+            "    <l1>c</l1>\n"
+            "    <l2>3</l2>\n"
+            "  </kl>\n"
+            "</df>\n";
+    const char *xml2 = "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <kl>\n"
+            "    <l1>b</l1>\n"
+            "    <l2>2</l2>\n"
+            "  </kl>\n"
+            "  <kl>\n"
+            "    <l1>a</l1>\n"
+            "    <l2>1</l2>\n"
+            "  </kl>\n"
+            "  <kl>\n"
+            "    <l1>a</l1>\n"
+            "    <l2>1</l2>\n"
+            "  </kl>\n"
+            "</df>\n";
+    const char *xml3 = "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <kl>\n"
+            "    <l1>c</l1>\n"
+            "  </kl>\n"
+            "  <kl>\n"
+            "    <l2>4</l2>\n"
+            "  </kl>\n"
+            "  <kl>\n"
+            "    <l1>e</l1>\n"
+            "    <l2>5</l2>\n"
+            "  </kl>\n"
+            "  <kl>\n"
+            "    <l1>f</l1>\n"
+            "    <l2>6</l2>\n"
+            "  </kl>\n"
+            "</df>\n";
+
+    const char *out_diff_1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <kl yang:operation=\"delete\" yang:orig-position=\"2\">\n"
+            "    <l1>c</l1>\n"
+            "    <l2>3</l2>\n"
+            "  </kl>\n"
+            "  <kl yang:operation=\"replace\" yang:position=\"\" yang:orig-position=\"1\">\n"
+            "    <l1>b</l1>\n"
+            "    <l2>2</l2>\n"
+            "  </kl>\n"
+            "  <kl yang:operation=\"create\" yang:position=\"2\">\n"
+            "    <l1>a</l1>\n"
+            "    <l2>1</l2>\n"
+            "  </kl>\n"
+            "</df>\n";
+    const char *out_diff_2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <kl yang:operation=\"delete\" yang:orig-position=\"\">\n"
+            "    <l1>b</l1>\n"
+            "    <l2>2</l2>\n"
+            "  </kl>\n"
+            "  <kl yang:operation=\"delete\" yang:orig-position=\"\">\n"
+            "    <l1>a</l1>\n"
+            "    <l2>1</l2>\n"
+            "  </kl>\n"
+            "  <kl yang:operation=\"delete\" yang:orig-position=\"\">\n"
+            "    <l1>a</l1>\n"
+            "    <l2>1</l2>\n"
+            "  </kl>\n"
+            "  <kl yang:operation=\"create\" yang:position=\"\">\n"
+            "    <l1>c</l1>\n"
+            "  </kl>\n"
+            "  <kl yang:operation=\"create\" yang:position=\"1\">\n"
+            "    <l2>4</l2>\n"
+            "  </kl>\n"
+            "  <kl yang:operation=\"create\" yang:position=\"2\">\n"
+            "    <l1>e</l1>\n"
+            "    <l2>5</l2>\n"
+            "  </kl>\n"
+            "  <kl yang:operation=\"create\" yang:position=\"3\">\n"
+            "    <l1>f</l1>\n"
+            "    <l2>6</l2>\n"
+            "  </kl>\n"
+            "</df>\n";
+    const char *out_merge =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <kl yang:operation=\"delete\" yang:orig-position=\"2\">\n"
+            "    <l1>c</l1>\n"
+            "    <l2>3</l2>\n"
+            "  </kl>\n"
+            "  <kl yang:orig-position=\"1\" yang:operation=\"delete\">\n"
+            "    <l1>b</l1>\n"
+            "    <l2>2</l2>\n"
+            "  </kl>\n"
+            "  <kl yang:orig-position=\"\" yang:operation=\"delete\">\n"
+            "    <l1>a</l1>\n"
+            "    <l2>1</l2>\n"
+            "  </kl>\n"
+            "  <kl yang:position=\"\" yang:operation=\"create\">\n"
+            "    <l1>c</l1>\n"
+            "  </kl>\n"
+            "  <kl yang:position=\"1\" yang:operation=\"create\">\n"
+            "    <l2>4</l2>\n"
+            "  </kl>\n"
+            "  <kl yang:position=\"2\" yang:operation=\"create\">\n"
+            "    <l1>e</l1>\n"
+            "    <l2>5</l2>\n"
+            "  </kl>\n"
+            "  <kl yang:position=\"3\" yang:operation=\"create\">\n"
+            "    <l1>f</l1>\n"
+            "    <l2>6</l2>\n"
+            "  </kl>\n"
+            "</df>\n";
+
+    TEST_DIFF_3(xml1, xml2, xml3, out_diff_1, out_diff_2, out_merge);
+}
+
+static void
+test_state_llist(void **state)
+{
+    (void) state;
+    const char *xml1 = "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <kll>a</kll>\n"
+            "  <kll>b</kll>\n"
+            "  <kll>c</kll>\n"
+            "</df>\n";
+    const char *xml2 = "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <kll>b</kll>\n"
+            "  <kll>c</kll>\n"
+            "  <kll>a</kll>\n"
+            "  <kll>a</kll>\n"
+            "  <kll>a</kll>\n"
+            "</df>\n";
+    const char *xml3 = "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <kll>a</kll>\n"
+            "  <kll>d</kll>\n"
+            "  <kll>a</kll>\n"
+            "</df>\n";
+
+    const char *out_diff_1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <kll yang:operation=\"replace\" yang:orig-default=\"false\" yang:position=\"\" yang:orig-position=\"1\">b</kll>\n"
+            "  <kll yang:operation=\"replace\" yang:orig-default=\"false\" yang:position=\"1\" yang:orig-position=\"2\">c</kll>\n"
+            "  <kll yang:operation=\"create\" yang:position=\"3\">a</kll>\n"
+            "  <kll yang:operation=\"create\" yang:position=\"4\">a</kll>\n"
+            "</df>\n";
+    const char *out_diff_2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <kll yang:operation=\"delete\" yang:orig-position=\"\">b</kll>\n"
+            "  <kll yang:operation=\"delete\" yang:orig-position=\"\">c</kll>\n"
+            "  <kll yang:operation=\"delete\" yang:orig-position=\"2\">a</kll>\n"
+            "  <kll yang:operation=\"create\" yang:position=\"1\">d</kll>\n"
+            "</df>\n";
+    const char *out_merge =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <kll yang:orig-default=\"false\" yang:orig-position=\"1\" yang:operation=\"delete\">b</kll>\n"
+            "  <kll yang:orig-default=\"false\" yang:orig-position=\"2\" yang:operation=\"delete\">c</kll>\n"
+            "  <kll yang:operation=\"create\" yang:position=\"4\">a</kll>\n"
+            "  <kll yang:position=\"1\" yang:operation=\"create\">d</kll>\n"
+            "</df>\n";
+
+    TEST_DIFF_3(xml1, xml2, xml3, out_diff_1, out_diff_2, out_merge);
+}
+
+static void
+test_wd(void **state)
+{
+    (void) state;
+    const struct lys_module *mod;
+    const char *xml2 = "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <foo>41</foo>\n"
+            "  <dllist>4</dllist>\n"
+            "</df>\n";
+    const char *xml3 = "<df xmlns=\"urn:libyang:tests:defaults\">\n"
+            "  <foo>42</foo>\n"
+            "  <dllist>4</dllist>\n"
+            "  <dllist>1</dllist>\n"
+            "</df>\n";
+
+    mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "defaults");
+    assert_non_null(mod);
+
+    struct lyd_node *model_1 = NULL;
+
+    assert_int_equal(lyd_validate_module(&model_1, mod, 0, NULL), LY_SUCCESS);
+    assert_ptr_not_equal(model_1, NULL);
+
+    struct lyd_node *model_2;
+    struct lyd_node *model_3;
+
+    CHECK_PARSE_LYD_PARAM(xml2, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_2);
+    CHECK_PARSE_LYD_PARAM(xml3, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_3);
+
+    /* diff1 */
+    struct lyd_node *diff1 = NULL;
+
+    assert_int_equal(lyd_diff_siblings(model_1, model_2, LYD_DIFF_DEFAULTS, &diff1), LY_SUCCESS);
+    assert_non_null(diff1);
+
+    const char *diff1_out_1 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <foo yang:operation=\"replace\" yang:orig-default=\"true\" yang:orig-value=\"42\">41</foo>\n"
+            "  <dllist yang:operation=\"delete\">1</dllist>\n"
+            "  <dllist yang:operation=\"delete\">2</dllist>\n"
+            "  <dllist yang:operation=\"delete\">3</dllist>\n"
+            "  <dllist yang:operation=\"create\">4</dllist>\n"
+            "</df>\n";
+
+    CHECK_LYD_STRING_PARAM(diff1, diff1_out_1, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_WD_ALL);
+    assert_int_equal(lyd_diff_apply_all(&model_1, diff1), LY_SUCCESS);
+    CHECK_LYD(model_1, model_2);
+
+    /* diff2 */
+    struct lyd_node *diff2;
+
+    assert_int_equal(lyd_diff_siblings(model_2, model_3, LYD_DIFF_DEFAULTS, &diff2), LY_SUCCESS);
+    assert_non_null(diff2);
+    CHECK_LYD_STRING(diff2,
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <foo yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"41\">42</foo>\n"
+            "  <dllist yang:operation=\"create\">1</dllist>\n"
+            "</df>\n");
+
+    assert_int_equal(lyd_diff_apply_all(&model_2, diff2), LY_SUCCESS);
+    CHECK_LYD(model_2, model_3);
+
+    /* merge */
+    assert_int_equal(lyd_diff_merge_all(&diff1, diff2, 0), LY_SUCCESS);
+
+    const char *diff1_out_2 =
+            "<df xmlns=\"urn:libyang:tests:defaults\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <foo yang:orig-default=\"true\" yang:operation=\"none\">42</foo>\n"
+            "  <dllist yang:operation=\"none\" yang:orig-default=\"true\">1</dllist>\n"
+            "  <dllist yang:operation=\"delete\">2</dllist>\n"
+            "  <dllist yang:operation=\"delete\">3</dllist>\n"
+            "  <dllist yang:operation=\"create\">4</dllist>\n"
+            "</df>\n";
+
+    CHECK_LYD_STRING_PARAM(diff1, diff1_out_2, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_WD_ALL);
+
+    lyd_free_all(model_1);
+    lyd_free_all(model_2);
+    lyd_free_all(model_3);
+    lyd_free_all(diff1);
+    lyd_free_all(diff2);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_invalid, setup),
+        UTEST(test_same, setup),
+        UTEST(test_empty1, setup),
+        UTEST(test_empty2, setup),
+        UTEST(test_empty_nested, setup),
+        UTEST(test_delete_merge, setup),
+        UTEST(test_leaf, setup),
+        UTEST(test_list, setup),
+        UTEST(test_userord_llist, setup),
+        UTEST(test_userord_llist2, setup),
+        UTEST(test_userord_mix, setup),
+        UTEST(test_userord_list, setup),
+        UTEST(test_userord_list2, setup),
+        UTEST(test_keyless_list, setup),
+        UTEST(test_state_llist, setup),
+        UTEST(test_wd, setup),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/data/test_lyb.c b/tests/utests/data/test_lyb.c
new file mode 100644
index 0000000..26f3e73
--- /dev/null
+++ b/tests/utests/data/test_lyb.c
@@ -0,0 +1,2841 @@
+/**
+ * @file test_lyb.c
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief Cmocka tests for LYB binary data format.
+ *
+ * Copyright (c) 2020 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "hash_table.h"
+#include "libyang.h"
+
+#define CHECK_PARSE_LYD(INPUT, OUT_NODE) \
+                CHECK_PARSE_LYD_PARAM(INPUT, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, OUT_NODE)
+
+#define CHECK_LYD_STRING(MODEL, TEXT) \
+                CHECK_LYD_STRING_PARAM(MODEL, TEXT, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK)
+
+static void
+check_print_parse(void **state, const char *data_xml)
+{
+    struct lyd_node *tree_1;
+    struct lyd_node *tree_2;
+    char *lyb_out;
+
+    CHECK_PARSE_LYD(data_xml, tree_1);
+    assert_int_equal(lyd_print_mem(&lyb_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0);
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, lyb_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT,
+            0, &tree_2));
+    assert_non_null(tree_2);
+    CHECK_LYD(tree_1, tree_2);
+
+    free(lyb_out);
+    lyd_free_all(tree_1);
+    lyd_free_all(tree_2);
+}
+
+static int
+setup(void **state)
+{
+    UTEST_SETUP;
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+
+    return 0;
+}
+
+static void
+tests_leaflist(void **state)
+{
+    const char *mod;
+    const char *data_xml;
+
+    mod =
+            "module mod { namespace \"urn:test-leaflist\"; prefix m;"
+            "  container cont {"
+            "    presence \"\";"
+            "    leaf-list ll {"
+            "      type uint8;"
+            "    }"
+            "  }"
+            "}";
+    UTEST_ADD_MODULE(mod, LYS_IN_YANG, NULL, NULL);
+
+    data_xml =
+            "<cont xmlns=\"urn:test-leaflist\">\n"
+            "</cont>\n";
+    check_print_parse(state, data_xml);
+
+    data_xml =
+            "<cont xmlns=\"urn:test-leaflist\">\n"
+            "  <ll>1</ll>\n"
+            "</cont>\n";
+    check_print_parse(state, data_xml);
+
+    data_xml =
+            "<cont xmlns=\"urn:test-leaflist\">\n"
+            "  <ll>1</ll>\n"
+            "  <ll>2</ll>\n"
+            "</cont>\n";
+    check_print_parse(state, data_xml);
+}
+
+static void
+tests_list(void **state)
+{
+    const char *mod;
+    const char *data_xml;
+
+    mod =
+            "module mod { namespace \"urn:test-list\"; prefix m;"
+            "  container cont {"
+            "    presence \"\";"
+            "    list lst {"
+            "      key \"lf\";"
+            "      leaf lf {"
+            "        type uint8;"
+            "      }"
+            "    }"
+            "  }"
+            "}";
+    UTEST_ADD_MODULE(mod, LYS_IN_YANG, NULL, NULL);
+
+    data_xml =
+            "<cont xmlns=\"urn:test-list\">\n"
+            "  <lst>"
+            "    <lf>1</lf>"
+            "  </lst>"
+            "</cont>\n";
+    check_print_parse(state, data_xml);
+
+    data_xml =
+            "<cont xmlns=\"urn:test-list\">\n"
+            "  <lst>"
+            "    <lf>1</lf>"
+            "    <lf>2</lf>"
+            "  </lst>"
+            "</cont>\n";
+    check_print_parse(state, data_xml);
+}
+
+static void
+tests_any(void **state)
+{
+    const char *mod;
+    const char *data_xml;
+
+    mod =
+            "module mod { namespace \"urn:test-any\"; prefix m;"
+            "  container cont {"
+            "    presence \"\";"
+            "    anyxml anxml;\n"
+            "  }"
+            "}";
+    UTEST_ADD_MODULE(mod, LYS_IN_YANG, NULL, NULL);
+
+    data_xml =
+            "<cont xmlns=\"urn:test-any\">\n"
+            "</cont>\n";
+    check_print_parse(state, data_xml);
+
+    data_xml =
+            "<cont xmlns=\"urn:test-any\">\n"
+            "  <anxml><node>value</node></anxml>\n"
+            "</cont>\n";
+    check_print_parse(state, data_xml);
+
+    data_xml =
+            "<cont xmlns=\"urn:test-any\">\n"
+            "  <anxml><node1>value</node1></anxml>\n"
+            "  <anxml><node2>value</node2></anxml>\n"
+            "</cont>\n";
+    check_print_parse(state, data_xml);
+}
+
+static void
+test_ietf_interfaces(void **state)
+{
+    const char *data_xml =
+            "<interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "        <name>eth0</name>\n"
+            "        <description>Ethernet 0</description>\n"
+            "        <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "        <enabled>true</enabled>\n"
+            "        <ipv4 xmlns=\"urn:ietf:params:xml:ns:yang:ietf-ip\">\n"
+            "            <enabled>true</enabled>\n"
+            "            <mtu>1500</mtu>\n"
+            "            <address>\n"
+            "                <ip>192.168.2.100</ip>\n"
+            "                <prefix-length>24</prefix-length>\n"
+            "            </address>\n"
+            "        </ipv4>\n"
+            "    </interface>\n"
+            "    <interface>\n"
+            "        <name>eth1</name>\n"
+            "        <description>Ethernet 1</description>\n"
+            "        <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "        <enabled>true</enabled>\n"
+            "        <ipv4 xmlns=\"urn:ietf:params:xml:ns:yang:ietf-ip\">\n"
+            "            <enabled>true</enabled>\n"
+            "            <mtu>1500</mtu>\n"
+            "            <address>\n"
+            "                <ip>10.10.1.5</ip>\n"
+            "                <prefix-length>16</prefix-length>\n"
+            "            </address>\n"
+            "        </ipv4>\n"
+            "    </interface>\n"
+            "    <interface>\n"
+            "        <name>gigaeth0</name>\n"
+            "        <description>GigabitEthernet 0</description>\n"
+            "        <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "        <enabled>false</enabled>\n"
+            "    </interface>\n"
+            "</interfaces>\n";
+
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "ietf-ip", NULL, NULL));
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "iana-if-type", NULL, NULL));
+
+    check_print_parse(state, data_xml);
+}
+
+static void
+test_origin(void **state)
+{
+    const char *origin_yang =
+            "module test-origin {"
+            "   namespace \"urn:test-origin\";"
+            "   prefix to;"
+            "   import ietf-origin {"
+            "       prefix or;"
+            "   }"
+            ""
+            "   container cont {"
+            "       leaf leaf1 {"
+            "           type string;"
+            "       }"
+            "       leaf leaf2 {"
+            "           type string;"
+            "       }"
+            "       leaf leaf3 {"
+            "           type uint8;"
+            "       }"
+            "   }"
+            "}";
+    const char *data_xml =
+            "<cont xmlns=\"urn:test-origin\">\n"
+            "  <leaf1 xmlns:or=\"urn:ietf:params:xml:ns:yang:ietf-origin\" or:origin=\"or:default\">value1</leaf1>\n"
+            "  <leaf2>value2</leaf2>\n"
+            "  <leaf3 xmlns:or=\"urn:ietf:params:xml:ns:yang:ietf-origin\" or:origin=\"or:system\">125</leaf3>\n"
+            "</cont>\n";
+
+    UTEST_ADD_MODULE(origin_yang, LYS_IN_YANG, NULL, NULL);
+    assert_int_equal(LY_SUCCESS, lys_set_implemented(ly_ctx_get_module_latest(UTEST_LYCTX, "ietf-origin"), NULL));
+
+    check_print_parse(state, data_xml);
+}
+
+static void
+test_statements(void **state)
+{
+    const char *links_yang =
+            "module links {\n"
+            "    yang-version 1.1;\n"
+            "    namespace \"urn:module2\";\n"
+            "    prefix mod2;\n"
+            "\n"
+            "    identity just-another-identity;\n"
+            "\n"
+            "    leaf one-leaf {\n"
+            "        type string;\n"
+            "    }\n"
+            "\n"
+            "    list list-for-augment {\n"
+            "        key keyleaf;\n"
+            "\n"
+            "        leaf keyleaf {\n"
+            "            type string;\n"
+            "        }\n"
+            "\n"
+            "        leaf just-leaf {\n"
+            "            type int32;\n"
+            "        }\n"
+            "    }\n"
+            "\n"
+            "    leaf rleaf {\n"
+            "        type string;\n"
+            "    }\n"
+            "\n"
+            "    leaf-list llist {\n"
+            "        type string;\n"
+            "        min-elements 0;\n"
+            "        max-elements 100;\n"
+            "        ordered-by user;\n"
+            "    }\n"
+            "\n"
+            "    grouping rgroup {\n"
+            "        leaf rg1 {\n"
+            "            type string;\n"
+            "        }\n"
+            "\n"
+            "        leaf rg2 {\n"
+            "            type string;\n"
+            "        }\n"
+            "    }\n"
+            "}\n";
+
+    const char *statements_yang =
+            "module statements {\n"
+            "    namespace \"urn:module\";\n"
+            "    prefix mod;\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    import links {\n"
+            "        prefix mod2;\n"
+            "    }\n"
+            "\n"
+            "    identity random-identity {\n"
+            "        base \"mod2:just-another-identity\";\n"
+            "        base \"another-identity\";\n"
+            "    }\n"
+            "\n"
+            "    identity another-identity {\n"
+            "        base \"mod2:just-another-identity\";\n"
+            "    }\n"
+            "\n"
+            "    typedef percent {\n"
+            "        type uint8 {\n"
+            "            range \"0 .. 100\";\n"
+            "        }\n"
+            "        units percent;\n"
+            "    }\n"
+            "\n"
+            "    container ice-cream-shop {\n"
+            "        container employees {\n"
+            "            list employee {\n"
+            "                config true;\n"
+            "                key id;\n"
+            "                unique name;\n"
+            "                min-elements 0;\n"
+            "                max-elements 100;\n"
+            "\n"
+            "                leaf id {\n"
+            "                    type uint64;\n"
+            "                    mandatory true;\n"
+            "                }\n"
+            "\n"
+            "                leaf name {\n"
+            "                    type string;\n"
+            "                }\n"
+            "\n"
+            "                leaf age {\n"
+            "                    type uint32;\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "\n"
+            "    container random {\n"
+            "        choice switch {\n"
+            "            case a {\n"
+            "                leaf aleaf {\n"
+            "                    type string;\n"
+            "                    default aaa;\n"
+            "                }\n"
+            "            }\n"
+            "\n"
+            "            case c {\n"
+            "                leaf cleaf {\n"
+            "                    type string;\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "\n"
+            "        anyxml xml-data;\n"
+            "        anydata any-data;\n"
+            "        leaf-list leaflist {\n"
+            "            type string;\n"
+            "            min-elements 0;\n"
+            "            max-elements 20;\n"
+            "            ordered-by system;\n"
+            "        }\n"
+            "\n"
+            "        grouping group {\n"
+            "            leaf g1 {\n"
+            "                mandatory false;\n"
+            "                type percent;\n"
+            "            }\n"
+            "\n"
+            "            leaf g2 {\n"
+            "                type string;\n"
+            "            }\n"
+            "        }\n"
+            "\n"
+            "        uses group;\n"
+            "        uses mod2:rgroup;\n"
+            "\n"
+            "        leaf lref {\n"
+            "            type leafref {\n"
+            "                path \"/mod2:one-leaf\";\n"
+            "            }\n"
+            "        }\n"
+            "\n"
+            "        leaf iref {\n"
+            "            type identityref {\n"
+            "                base \"mod2:just-another-identity\";\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "\n"
+            "    notification notif;\n"
+            "\n"
+            "    augment \"/random\" {\n"
+            "        leaf aug-leaf {\n"
+            "            type string;\n"
+            "        }\n"
+            "    }\n"
+            "}\n";
+
+    const char *data_xml =
+            "<one-leaf xmlns=\"urn:module2\">reference leaf</one-leaf>\n"
+            "<ice-cream-shop xmlns=\"urn:module\">\n"
+            "  <employees>\n"
+            "    <employee>\n"
+            "      <id>0</id>\n"
+            "      <name>John Doe</name>\n"
+            "      <age>28</age>\n"
+            "    </employee>\n"
+            "    <employee>\n"
+            "      <id>1</id>\n"
+            "      <name>Dohn Joe</name>\n"
+            "      <age>20</age>\n"
+            "    </employee>\n"
+            "  </employees>\n"
+            "</ice-cream-shop>\n"
+            "<random xmlns=\"urn:module\">\n"
+            "  <aleaf>string</aleaf>\n"
+            "  <xml-data><anyxml>data</anyxml></xml-data>\n"
+            "  <any-data><notif/></any-data>\n"
+            "  <leaflist>l0</leaflist>\n"
+            "  <leaflist>l1</leaflist>\n"
+            "  <leaflist>l2</leaflist>\n"
+            "  <g1>40</g1>\n"
+            "  <g2>string</g2>\n"
+            "  <aug-leaf>string</aug-leaf>\n"
+            "  <rg1>string</rg1>\n"
+            "  <rg2>string</rg2>\n"
+            "  <lref>reference leaf</lref>\n"
+            "  <iref>random-identity</iref>\n"
+            "</random>\n";
+
+    UTEST_ADD_MODULE(links_yang, LYS_IN_YANG, NULL, NULL);
+    UTEST_ADD_MODULE(statements_yang, LYS_IN_YANG, NULL, NULL);
+
+    check_print_parse(state, data_xml);
+}
+
+static void
+test_opaq(void **state)
+{
+    const char *nc_feats[] = {"writable-running", NULL};
+    const char *data_xml =
+            "<edit-config xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\">\n"
+            "  <target>\n"
+            "    <running/>\n"
+            "  </target>\n"
+            "  <config>\n"
+            "    <top xmlns=\"urn:ed\">\n"
+            "      <first>TestFirst</first>\n"
+            "    </top>\n"
+            "  </config>\n"
+            "</edit-config>\n";
+    struct ly_in *in;
+    struct lyd_node *tree_1;
+    struct lyd_node *tree_2;
+    char *xml_out; /* tree_2 */
+    LY_ERR rc;
+
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "ietf-netconf", NULL, nc_feats));
+
+    ly_in_new_memory(data_xml, &in);
+    rc = lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_RPC_YANG, &tree_1, NULL);
+    ly_in_free(in, 0);
+    assert_int_equal(rc, LY_SUCCESS);
+
+    assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0);
+
+    ly_in_new_memory(xml_out, &in);
+    rc = lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_LYB, LYD_TYPE_RPC_YANG, &tree_2, NULL);
+    ly_in_free(in, 0);
+    assert_int_equal(rc, LY_SUCCESS);
+
+    /* compare models */
+    CHECK_LYD(tree_1, tree_2);
+
+    /* clean */
+    free(xml_out);
+    lyd_free_all(tree_1);
+    lyd_free_all(tree_2);
+}
+
+static void
+test_collisions(void **state)
+{
+    char *counters_yang, *data_xml;
+
+    counters_yang = malloc(32768);
+    strcpy(counters_yang,
+            "module counters {\n"
+            "    namespace \"urn:counters\";\n"
+            "    prefix c;\n"
+            "\n"
+            "    container stats {\n");
+    strcat(counters_yang,
+            "        leaf counter1 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter2 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter3 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter4 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter5 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter6 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter7 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter8 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter9 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter10 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter11 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter12 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter13 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter14 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter15 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter16 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter17 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter18 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter19 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter20 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter21 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter22 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter23 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter24 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter25 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter26 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter27 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter28 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter29 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter30 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter31 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter32 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter33 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter34 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter35 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter36 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter37 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter38 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter39 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter40 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter41 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter42 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter43 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter44 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter45 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter46 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter47 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter48 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter49 {\n"
+            "            type uint64;\n"
+            "        }\n");
+    strcat(counters_yang,
+            "        leaf counter50 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter51 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter52 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter53 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter54 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter55 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter56 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter57 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter58 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter59 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter60 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter61 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter62 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter63 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter64 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter65 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter66 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter67 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter68 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter69 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter70 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter71 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter72 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter73 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter74 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter75 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter76 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter77 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter78 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter79 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter80 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter81 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter82 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter83 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter84 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter85 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter86 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter87 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter88 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter89 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter90 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter91 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter92 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter93 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter94 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter95 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter96 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter97 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter98 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter99 {\n"
+            "            type uint64;\n"
+            "        }\n");
+    strcat(counters_yang,
+            "        leaf counter100 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter101 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter102 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter103 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter104 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter105 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter106 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter107 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter108 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter109 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter110 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter111 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter112 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter113 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter114 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter115 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter116 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter117 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter118 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter119 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter120 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter121 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter122 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter123 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter124 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter125 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter126 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter127 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter128 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter129 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter130 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter131 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter132 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter133 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter134 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter135 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter136 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter137 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter138 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter139 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter140 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter141 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter142 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter143 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter144 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter145 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter146 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter147 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter148 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter149 {\n"
+            "            type uint64;\n"
+            "        }\n");
+    strcat(counters_yang,
+            "        leaf counter150 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter151 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter152 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter153 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter154 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter155 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter156 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter157 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter158 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter159 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter160 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter161 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter162 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter163 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter164 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter165 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter166 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter167 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter168 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter169 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter170 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter171 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter172 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter173 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter174 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter175 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter176 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter177 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter178 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter179 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter180 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter181 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter182 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter183 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter184 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter185 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter186 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter187 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter188 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter189 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter190 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter191 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter192 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter193 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter194 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter195 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter196 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter197 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter198 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter199 {\n"
+            "            type uint64;\n"
+            "        }\n");
+    strcat(counters_yang,
+            "        leaf counter200 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter201 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter202 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter203 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter204 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter205 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter206 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter207 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter208 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter209 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter210 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter211 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter212 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter213 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter214 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter215 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter216 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter217 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter218 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter219 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter220 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter221 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter222 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter223 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter224 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter225 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter226 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter227 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter228 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter229 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter230 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter231 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter232 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter233 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter234 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter235 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter236 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter237 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter238 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter239 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter240 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter241 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter242 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter243 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter244 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter245 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter246 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter247 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter248 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter249 {\n"
+            "            type uint64;\n"
+            "        }\n");
+    strcat(counters_yang,
+            "        leaf counter250 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter251 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter252 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter253 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter254 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter255 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter256 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter257 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter258 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter259 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter260 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter261 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter262 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter263 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter264 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter265 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter266 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter267 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter268 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter269 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter270 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter271 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter272 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter273 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter274 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter275 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter276 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter277 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter278 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter279 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter280 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter281 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter282 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter283 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter284 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter285 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter286 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter287 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter288 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter289 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter290 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter291 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter292 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter293 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter294 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter295 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter296 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter297 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter298 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter299 {\n"
+            "            type uint64;\n"
+            "        }\n");
+    strcat(counters_yang,
+            "        leaf counter300 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter301 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter302 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter303 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter304 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter305 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter306 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter307 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter308 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter309 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter310 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter311 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter312 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter313 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter314 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter315 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter316 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter317 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter318 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter319 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter320 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter321 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter322 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter323 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter324 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter325 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter326 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter327 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter328 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter329 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter330 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter331 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter332 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter333 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter334 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter335 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter336 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter337 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter338 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter339 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter340 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter341 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter342 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter343 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter344 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter345 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter346 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter347 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter348 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter349 {\n"
+            "            type uint64;\n"
+            "        }\n");
+    strcat(counters_yang,
+            "        leaf counter350 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter351 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter352 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter353 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter354 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter355 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter356 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter357 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter358 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter359 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter360 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter361 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter362 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter363 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter364 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter365 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter366 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter367 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter368 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter369 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter370 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter371 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter372 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter373 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter374 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter375 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter376 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter377 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter378 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter379 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter380 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter381 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter382 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter383 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter384 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter385 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter386 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter387 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter388 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter389 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter390 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter391 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter392 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter393 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter394 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter395 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter396 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter397 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter398 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter399 {\n"
+            "            type uint64;\n"
+            "        }\n");
+    strcat(counters_yang,
+            "        leaf counter400 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter401 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter402 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter403 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter404 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter405 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter406 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter407 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter408 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter409 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter410 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter411 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter412 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter413 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter414 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter415 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter416 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter417 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter418 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter419 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter420 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter421 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter422 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter423 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter424 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter425 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter426 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter427 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter428 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter429 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter430 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter431 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter432 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter433 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter434 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter435 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter436 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter437 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter438 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter439 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter440 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter441 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter442 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter443 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter444 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter445 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter446 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter447 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter448 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter449 {\n"
+            "            type uint64;\n"
+            "        }\n");
+    strcat(counters_yang,
+            "        leaf counter450 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter451 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter452 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter453 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter454 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter455 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter456 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter457 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter458 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter459 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter460 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter461 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter462 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter463 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter464 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter465 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter466 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter467 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter468 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter469 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter470 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter471 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter472 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter473 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter474 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter475 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter476 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter477 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter478 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter479 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter480 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter481 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter482 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter483 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter484 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter485 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter486 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter487 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter488 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter489 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter490 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter491 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter492 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter493 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter494 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter495 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter496 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter497 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter498 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "        leaf counter499 {\n"
+            "            type uint64;\n"
+            "        }\n"
+            "    }\n"
+            "}\n");
+
+    data_xml = malloc(16384);
+    strcpy(data_xml,
+            "<stats xmlns=\"urn:counters\">\n");
+    strcat(data_xml,
+            "    <counter1>1</counter1>\n"
+            "    <counter2>2</counter2>\n"
+            "    <counter3>3</counter3>\n"
+            "    <counter4>4</counter4>\n"
+            "    <counter5>5</counter5>\n"
+            "    <counter6>6</counter6>\n"
+            "    <counter7>7</counter7>\n"
+            "    <counter8>8</counter8>\n"
+            "    <counter9>9</counter9>\n"
+            "    <counter10>10</counter10>\n"
+            "    <counter11>11</counter11>\n"
+            "    <counter12>12</counter12>\n"
+            "    <counter13>13</counter13>\n"
+            "    <counter14>14</counter14>\n"
+            "    <counter15>15</counter15>\n"
+            "    <counter16>16</counter16>\n"
+            "    <counter17>17</counter17>\n"
+            "    <counter18>18</counter18>\n"
+            "    <counter19>19</counter19>\n"
+            "    <counter20>20</counter20>\n"
+            "    <counter21>21</counter21>\n"
+            "    <counter22>22</counter22>\n"
+            "    <counter23>23</counter23>\n"
+            "    <counter24>24</counter24>\n"
+            "    <counter25>25</counter25>\n"
+            "    <counter26>26</counter26>\n"
+            "    <counter27>27</counter27>\n"
+            "    <counter28>28</counter28>\n"
+            "    <counter29>29</counter29>\n"
+            "    <counter30>30</counter30>\n"
+            "    <counter31>31</counter31>\n"
+            "    <counter32>32</counter32>\n"
+            "    <counter33>33</counter33>\n"
+            "    <counter34>34</counter34>\n"
+            "    <counter35>35</counter35>\n"
+            "    <counter36>36</counter36>\n"
+            "    <counter37>37</counter37>\n"
+            "    <counter38>38</counter38>\n"
+            "    <counter39>39</counter39>\n"
+            "    <counter40>40</counter40>\n"
+            "    <counter41>41</counter41>\n"
+            "    <counter42>42</counter42>\n"
+            "    <counter43>43</counter43>\n"
+            "    <counter44>44</counter44>\n"
+            "    <counter45>45</counter45>\n"
+            "    <counter46>46</counter46>\n"
+            "    <counter47>47</counter47>\n"
+            "    <counter48>48</counter48>\n"
+            "    <counter49>49</counter49>\n"
+            "    <counter50>50</counter50>\n"
+            "    <counter51>51</counter51>\n"
+            "    <counter52>52</counter52>\n"
+            "    <counter53>53</counter53>\n"
+            "    <counter54>54</counter54>\n"
+            "    <counter55>55</counter55>\n"
+            "    <counter56>56</counter56>\n"
+            "    <counter57>57</counter57>\n"
+            "    <counter58>58</counter58>\n"
+            "    <counter59>59</counter59>\n"
+            "    <counter60>60</counter60>\n"
+            "    <counter61>61</counter61>\n"
+            "    <counter62>62</counter62>\n"
+            "    <counter63>63</counter63>\n"
+            "    <counter64>64</counter64>\n"
+            "    <counter65>65</counter65>\n"
+            "    <counter66>66</counter66>\n"
+            "    <counter67>67</counter67>\n"
+            "    <counter68>68</counter68>\n"
+            "    <counter69>69</counter69>\n"
+            "    <counter70>70</counter70>\n"
+            "    <counter71>71</counter71>\n"
+            "    <counter72>72</counter72>\n"
+            "    <counter73>73</counter73>\n"
+            "    <counter74>74</counter74>\n"
+            "    <counter75>75</counter75>\n"
+            "    <counter76>76</counter76>\n"
+            "    <counter77>77</counter77>\n"
+            "    <counter78>78</counter78>\n"
+            "    <counter79>79</counter79>\n"
+            "    <counter80>80</counter80>\n"
+            "    <counter81>81</counter81>\n"
+            "    <counter82>82</counter82>\n"
+            "    <counter83>83</counter83>\n"
+            "    <counter84>84</counter84>\n"
+            "    <counter85>85</counter85>\n"
+            "    <counter86>86</counter86>\n"
+            "    <counter87>87</counter87>\n"
+            "    <counter88>88</counter88>\n"
+            "    <counter89>89</counter89>\n"
+            "    <counter90>90</counter90>\n"
+            "    <counter91>91</counter91>\n"
+            "    <counter92>92</counter92>\n"
+            "    <counter93>93</counter93>\n"
+            "    <counter94>94</counter94>\n"
+            "    <counter95>95</counter95>\n"
+            "    <counter96>96</counter96>\n"
+            "    <counter97>97</counter97>\n"
+            "    <counter98>98</counter98>\n"
+            "    <counter99>99</counter99>\n");
+    strcat(data_xml,
+            "    <counter100>100</counter100>\n"
+            "    <counter101>101</counter101>\n"
+            "    <counter102>102</counter102>\n"
+            "    <counter103>103</counter103>\n"
+            "    <counter104>104</counter104>\n"
+            "    <counter105>105</counter105>\n"
+            "    <counter106>106</counter106>\n"
+            "    <counter107>107</counter107>\n"
+            "    <counter108>108</counter108>\n"
+            "    <counter109>109</counter109>\n"
+            "    <counter110>110</counter110>\n"
+            "    <counter111>111</counter111>\n"
+            "    <counter112>112</counter112>\n"
+            "    <counter113>113</counter113>\n"
+            "    <counter114>114</counter114>\n"
+            "    <counter115>115</counter115>\n"
+            "    <counter116>116</counter116>\n"
+            "    <counter117>117</counter117>\n"
+            "    <counter118>118</counter118>\n"
+            "    <counter119>119</counter119>\n"
+            "    <counter120>120</counter120>\n"
+            "    <counter121>121</counter121>\n"
+            "    <counter122>122</counter122>\n"
+            "    <counter123>123</counter123>\n"
+            "    <counter124>124</counter124>\n"
+            "    <counter125>125</counter125>\n"
+            "    <counter126>126</counter126>\n"
+            "    <counter127>127</counter127>\n"
+            "    <counter128>128</counter128>\n"
+            "    <counter129>129</counter129>\n"
+            "    <counter130>130</counter130>\n"
+            "    <counter131>131</counter131>\n"
+            "    <counter132>132</counter132>\n"
+            "    <counter133>133</counter133>\n"
+            "    <counter134>134</counter134>\n"
+            "    <counter135>135</counter135>\n"
+            "    <counter136>136</counter136>\n"
+            "    <counter137>137</counter137>\n"
+            "    <counter138>138</counter138>\n"
+            "    <counter139>139</counter139>\n"
+            "    <counter140>140</counter140>\n"
+            "    <counter141>141</counter141>\n"
+            "    <counter142>142</counter142>\n"
+            "    <counter143>143</counter143>\n"
+            "    <counter144>144</counter144>\n"
+            "    <counter145>145</counter145>\n"
+            "    <counter146>146</counter146>\n"
+            "    <counter147>147</counter147>\n"
+            "    <counter148>148</counter148>\n"
+            "    <counter149>149</counter149>\n"
+            "    <counter150>150</counter150>\n"
+            "    <counter151>151</counter151>\n"
+            "    <counter152>152</counter152>\n"
+            "    <counter153>153</counter153>\n"
+            "    <counter154>154</counter154>\n"
+            "    <counter155>155</counter155>\n"
+            "    <counter156>156</counter156>\n"
+            "    <counter157>157</counter157>\n"
+            "    <counter158>158</counter158>\n"
+            "    <counter159>159</counter159>\n"
+            "    <counter160>160</counter160>\n"
+            "    <counter161>161</counter161>\n"
+            "    <counter162>162</counter162>\n"
+            "    <counter163>163</counter163>\n"
+            "    <counter164>164</counter164>\n"
+            "    <counter165>165</counter165>\n"
+            "    <counter166>166</counter166>\n"
+            "    <counter167>167</counter167>\n"
+            "    <counter168>168</counter168>\n"
+            "    <counter169>169</counter169>\n"
+            "    <counter170>170</counter170>\n"
+            "    <counter171>171</counter171>\n"
+            "    <counter172>172</counter172>\n"
+            "    <counter173>173</counter173>\n"
+            "    <counter174>174</counter174>\n"
+            "    <counter175>175</counter175>\n"
+            "    <counter176>176</counter176>\n"
+            "    <counter177>177</counter177>\n"
+            "    <counter178>178</counter178>\n"
+            "    <counter179>179</counter179>\n"
+            "    <counter180>180</counter180>\n"
+            "    <counter181>181</counter181>\n"
+            "    <counter182>182</counter182>\n"
+            "    <counter183>183</counter183>\n"
+            "    <counter184>184</counter184>\n"
+            "    <counter185>185</counter185>\n"
+            "    <counter186>186</counter186>\n"
+            "    <counter187>187</counter187>\n"
+            "    <counter188>188</counter188>\n"
+            "    <counter189>189</counter189>\n"
+            "    <counter190>190</counter190>\n"
+            "    <counter191>191</counter191>\n"
+            "    <counter192>192</counter192>\n"
+            "    <counter193>193</counter193>\n"
+            "    <counter194>194</counter194>\n"
+            "    <counter195>195</counter195>\n"
+            "    <counter196>196</counter196>\n"
+            "    <counter197>197</counter197>\n"
+            "    <counter198>198</counter198>\n"
+            "    <counter199>199</counter199>\n");
+    strcat(data_xml,
+            "    <counter200>200</counter200>\n"
+            "    <counter201>201</counter201>\n"
+            "    <counter202>202</counter202>\n"
+            "    <counter203>203</counter203>\n"
+            "    <counter204>204</counter204>\n"
+            "    <counter205>205</counter205>\n"
+            "    <counter206>206</counter206>\n"
+            "    <counter207>207</counter207>\n"
+            "    <counter208>208</counter208>\n"
+            "    <counter209>209</counter209>\n"
+            "    <counter210>210</counter210>\n"
+            "    <counter211>211</counter211>\n"
+            "    <counter212>212</counter212>\n"
+            "    <counter213>213</counter213>\n"
+            "    <counter214>214</counter214>\n"
+            "    <counter215>215</counter215>\n"
+            "    <counter216>216</counter216>\n"
+            "    <counter217>217</counter217>\n"
+            "    <counter218>218</counter218>\n"
+            "    <counter219>219</counter219>\n"
+            "    <counter220>220</counter220>\n"
+            "    <counter221>221</counter221>\n"
+            "    <counter222>222</counter222>\n"
+            "    <counter223>223</counter223>\n"
+            "    <counter224>224</counter224>\n"
+            "    <counter225>225</counter225>\n"
+            "    <counter226>226</counter226>\n"
+            "    <counter227>227</counter227>\n"
+            "    <counter228>228</counter228>\n"
+            "    <counter229>229</counter229>\n"
+            "    <counter230>230</counter230>\n"
+            "    <counter231>231</counter231>\n"
+            "    <counter232>232</counter232>\n"
+            "    <counter233>233</counter233>\n"
+            "    <counter234>234</counter234>\n"
+            "    <counter235>235</counter235>\n"
+            "    <counter236>236</counter236>\n"
+            "    <counter237>237</counter237>\n"
+            "    <counter238>238</counter238>\n"
+            "    <counter239>239</counter239>\n"
+            "    <counter240>240</counter240>\n"
+            "    <counter241>241</counter241>\n"
+            "    <counter242>242</counter242>\n"
+            "    <counter243>243</counter243>\n"
+            "    <counter244>244</counter244>\n"
+            "    <counter245>245</counter245>\n"
+            "    <counter246>246</counter246>\n"
+            "    <counter247>247</counter247>\n"
+            "    <counter248>248</counter248>\n"
+            "    <counter249>249</counter249>\n"
+            "    <counter250>250</counter250>\n"
+            "    <counter251>251</counter251>\n"
+            "    <counter252>252</counter252>\n"
+            "    <counter253>253</counter253>\n"
+            "    <counter254>254</counter254>\n"
+            "    <counter255>255</counter255>\n"
+            "    <counter256>256</counter256>\n"
+            "    <counter257>257</counter257>\n"
+            "    <counter258>258</counter258>\n"
+            "    <counter259>259</counter259>\n"
+            "    <counter260>260</counter260>\n"
+            "    <counter261>261</counter261>\n"
+            "    <counter262>262</counter262>\n"
+            "    <counter263>263</counter263>\n"
+            "    <counter264>264</counter264>\n"
+            "    <counter265>265</counter265>\n"
+            "    <counter266>266</counter266>\n"
+            "    <counter267>267</counter267>\n"
+            "    <counter268>268</counter268>\n"
+            "    <counter269>269</counter269>\n"
+            "    <counter270>270</counter270>\n"
+            "    <counter271>271</counter271>\n"
+            "    <counter272>272</counter272>\n"
+            "    <counter273>273</counter273>\n"
+            "    <counter274>274</counter274>\n"
+            "    <counter275>275</counter275>\n"
+            "    <counter276>276</counter276>\n"
+            "    <counter277>277</counter277>\n"
+            "    <counter278>278</counter278>\n"
+            "    <counter279>279</counter279>\n"
+            "    <counter280>280</counter280>\n"
+            "    <counter281>281</counter281>\n"
+            "    <counter282>282</counter282>\n"
+            "    <counter283>283</counter283>\n"
+            "    <counter284>284</counter284>\n"
+            "    <counter285>285</counter285>\n"
+            "    <counter286>286</counter286>\n"
+            "    <counter287>287</counter287>\n"
+            "    <counter288>288</counter288>\n"
+            "    <counter289>289</counter289>\n"
+            "    <counter290>290</counter290>\n"
+            "    <counter291>291</counter291>\n"
+            "    <counter292>292</counter292>\n"
+            "    <counter293>293</counter293>\n"
+            "    <counter294>294</counter294>\n"
+            "    <counter295>295</counter295>\n"
+            "    <counter296>296</counter296>\n"
+            "    <counter297>297</counter297>\n"
+            "    <counter298>298</counter298>\n"
+            "    <counter299>299</counter299>\n");
+    strcat(data_xml,
+            "    <counter300>300</counter300>\n"
+            "    <counter301>301</counter301>\n"
+            "    <counter302>302</counter302>\n"
+            "    <counter303>303</counter303>\n"
+            "    <counter304>304</counter304>\n"
+            "    <counter305>305</counter305>\n"
+            "    <counter306>306</counter306>\n"
+            "    <counter307>307</counter307>\n"
+            "    <counter308>308</counter308>\n"
+            "    <counter309>309</counter309>\n"
+            "    <counter310>310</counter310>\n"
+            "    <counter311>311</counter311>\n"
+            "    <counter312>312</counter312>\n"
+            "    <counter313>313</counter313>\n"
+            "    <counter314>314</counter314>\n"
+            "    <counter315>315</counter315>\n"
+            "    <counter316>316</counter316>\n"
+            "    <counter317>317</counter317>\n"
+            "    <counter318>318</counter318>\n"
+            "    <counter319>319</counter319>\n"
+            "    <counter320>320</counter320>\n"
+            "    <counter321>321</counter321>\n"
+            "    <counter322>322</counter322>\n"
+            "    <counter323>323</counter323>\n"
+            "    <counter324>324</counter324>\n"
+            "    <counter325>325</counter325>\n"
+            "    <counter326>326</counter326>\n"
+            "    <counter327>327</counter327>\n"
+            "    <counter328>328</counter328>\n"
+            "    <counter329>329</counter329>\n"
+            "    <counter330>330</counter330>\n"
+            "    <counter331>331</counter331>\n"
+            "    <counter332>332</counter332>\n"
+            "    <counter333>333</counter333>\n"
+            "    <counter334>334</counter334>\n"
+            "    <counter335>335</counter335>\n"
+            "    <counter336>336</counter336>\n"
+            "    <counter337>337</counter337>\n"
+            "    <counter338>338</counter338>\n"
+            "    <counter339>339</counter339>\n"
+            "    <counter340>340</counter340>\n"
+            "    <counter341>341</counter341>\n"
+            "    <counter342>342</counter342>\n"
+            "    <counter343>343</counter343>\n"
+            "    <counter344>344</counter344>\n"
+            "    <counter345>345</counter345>\n"
+            "    <counter346>346</counter346>\n"
+            "    <counter347>347</counter347>\n"
+            "    <counter348>348</counter348>\n"
+            "    <counter349>349</counter349>\n"
+            "    <counter350>350</counter350>\n"
+            "    <counter351>351</counter351>\n"
+            "    <counter352>352</counter352>\n"
+            "    <counter353>353</counter353>\n"
+            "    <counter354>354</counter354>\n"
+            "    <counter355>355</counter355>\n"
+            "    <counter356>356</counter356>\n"
+            "    <counter357>357</counter357>\n"
+            "    <counter358>358</counter358>\n"
+            "    <counter359>359</counter359>\n"
+            "    <counter360>360</counter360>\n"
+            "    <counter361>361</counter361>\n"
+            "    <counter362>362</counter362>\n"
+            "    <counter363>363</counter363>\n"
+            "    <counter364>364</counter364>\n"
+            "    <counter365>365</counter365>\n"
+            "    <counter366>366</counter366>\n"
+            "    <counter367>367</counter367>\n"
+            "    <counter368>368</counter368>\n"
+            "    <counter369>369</counter369>\n"
+            "    <counter370>370</counter370>\n"
+            "    <counter371>371</counter371>\n"
+            "    <counter372>372</counter372>\n"
+            "    <counter373>373</counter373>\n"
+            "    <counter374>374</counter374>\n"
+            "    <counter375>375</counter375>\n"
+            "    <counter376>376</counter376>\n"
+            "    <counter377>377</counter377>\n"
+            "    <counter378>378</counter378>\n"
+            "    <counter379>379</counter379>\n"
+            "    <counter380>380</counter380>\n"
+            "    <counter381>381</counter381>\n"
+            "    <counter382>382</counter382>\n"
+            "    <counter383>383</counter383>\n"
+            "    <counter384>384</counter384>\n"
+            "    <counter385>385</counter385>\n"
+            "    <counter386>386</counter386>\n"
+            "    <counter387>387</counter387>\n"
+            "    <counter388>388</counter388>\n"
+            "    <counter389>389</counter389>\n"
+            "    <counter390>390</counter390>\n"
+            "    <counter391>391</counter391>\n"
+            "    <counter392>392</counter392>\n"
+            "    <counter393>393</counter393>\n"
+            "    <counter394>394</counter394>\n"
+            "    <counter395>395</counter395>\n"
+            "    <counter396>396</counter396>\n"
+            "    <counter397>397</counter397>\n"
+            "    <counter398>398</counter398>\n"
+            "    <counter399>399</counter399>\n");
+    strcat(data_xml,
+            "    <counter400>400</counter400>\n"
+            "    <counter401>401</counter401>\n"
+            "    <counter402>402</counter402>\n"
+            "    <counter403>403</counter403>\n"
+            "    <counter404>404</counter404>\n"
+            "    <counter405>405</counter405>\n"
+            "    <counter406>406</counter406>\n"
+            "    <counter407>407</counter407>\n"
+            "    <counter408>408</counter408>\n"
+            "    <counter409>409</counter409>\n"
+            "    <counter410>410</counter410>\n"
+            "    <counter411>411</counter411>\n"
+            "    <counter412>412</counter412>\n"
+            "    <counter413>413</counter413>\n"
+            "    <counter414>414</counter414>\n"
+            "    <counter415>415</counter415>\n"
+            "    <counter416>416</counter416>\n"
+            "    <counter417>417</counter417>\n"
+            "    <counter418>418</counter418>\n"
+            "    <counter419>419</counter419>\n"
+            "    <counter420>420</counter420>\n"
+            "    <counter421>421</counter421>\n"
+            "    <counter422>422</counter422>\n"
+            "    <counter423>423</counter423>\n"
+            "    <counter424>424</counter424>\n"
+            "    <counter425>425</counter425>\n"
+            "    <counter426>426</counter426>\n"
+            "    <counter427>427</counter427>\n"
+            "    <counter428>428</counter428>\n"
+            "    <counter429>429</counter429>\n"
+            "    <counter430>430</counter430>\n"
+            "    <counter431>431</counter431>\n"
+            "    <counter432>432</counter432>\n"
+            "    <counter433>433</counter433>\n"
+            "    <counter434>434</counter434>\n"
+            "    <counter435>435</counter435>\n"
+            "    <counter436>436</counter436>\n"
+            "    <counter437>437</counter437>\n"
+            "    <counter438>438</counter438>\n"
+            "    <counter439>439</counter439>\n"
+            "    <counter440>440</counter440>\n"
+            "    <counter441>441</counter441>\n"
+            "    <counter442>442</counter442>\n"
+            "    <counter443>443</counter443>\n"
+            "    <counter444>444</counter444>\n"
+            "    <counter445>445</counter445>\n"
+            "    <counter446>446</counter446>\n"
+            "    <counter447>447</counter447>\n"
+            "    <counter448>448</counter448>\n"
+            "    <counter449>449</counter449>\n"
+            "    <counter450>450</counter450>\n"
+            "    <counter451>451</counter451>\n"
+            "    <counter452>452</counter452>\n"
+            "    <counter453>453</counter453>\n"
+            "    <counter454>454</counter454>\n"
+            "    <counter455>455</counter455>\n"
+            "    <counter456>456</counter456>\n"
+            "    <counter457>457</counter457>\n"
+            "    <counter458>458</counter458>\n"
+            "    <counter459>459</counter459>\n"
+            "    <counter460>460</counter460>\n"
+            "    <counter461>461</counter461>\n"
+            "    <counter462>462</counter462>\n"
+            "    <counter463>463</counter463>\n"
+            "    <counter464>464</counter464>\n"
+            "    <counter465>465</counter465>\n"
+            "    <counter466>466</counter466>\n"
+            "    <counter467>467</counter467>\n"
+            "    <counter468>468</counter468>\n"
+            "    <counter469>469</counter469>\n"
+            "    <counter470>470</counter470>\n"
+            "    <counter471>471</counter471>\n"
+            "    <counter472>472</counter472>\n"
+            "    <counter473>473</counter473>\n"
+            "    <counter474>474</counter474>\n"
+            "    <counter475>475</counter475>\n"
+            "    <counter476>476</counter476>\n"
+            "    <counter477>477</counter477>\n"
+            "    <counter478>478</counter478>\n"
+            "    <counter479>479</counter479>\n"
+            "    <counter480>480</counter480>\n"
+            "    <counter481>481</counter481>\n"
+            "    <counter482>482</counter482>\n"
+            "    <counter483>483</counter483>\n"
+            "    <counter484>484</counter484>\n"
+            "    <counter485>485</counter485>\n"
+            "    <counter486>486</counter486>\n"
+            "    <counter487>487</counter487>\n"
+            "    <counter488>488</counter488>\n"
+            "    <counter489>489</counter489>\n"
+            "    <counter490>490</counter490>\n"
+            "    <counter491>491</counter491>\n"
+            "    <counter492>492</counter492>\n"
+            "    <counter493>493</counter493>\n"
+            "    <counter494>494</counter494>\n"
+            "    <counter495>495</counter495>\n"
+            "    <counter496>496</counter496>\n"
+            "    <counter497>497</counter497>\n"
+            "    <counter498>498</counter498>\n"
+            "    <counter499>499</counter499>\n"
+            "</stats>\n");
+
+    UTEST_ADD_MODULE(counters_yang, LYS_IN_YANG, NULL, NULL);
+
+    check_print_parse(state, data_xml);
+
+    free(counters_yang);
+    free(data_xml);
+}
+
+#if 0
+
+static void
+test_types(void **state)
+{
+    struct state *st = (*state);
+    int ret;
+
+    ly_ctx_set_searchdir(st->ctx, TESTS_DIR "/data/files");
+    assert_non_null(ly_ctx_load_module(st->ctx, "types", NULL));
+
+    st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR "/data/files/types.xml", LYD_XML, LYD_OPT_CONFIG);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+static void
+test_annotations(void **state)
+{
+    struct state *st = (*state);
+    int ret;
+
+    ly_ctx_set_searchdir(st->ctx, TESTS_DIR "/data/files");
+    assert_non_null(ly_ctx_load_module(st->ctx, "annotations", NULL));
+
+    st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR "/data/files/annotations.xml", LYD_XML, LYD_OPT_CONFIG);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+static void
+test_similar_annot_names(void **state)
+{
+    struct state *st = (*state);
+    int ret;
+
+    ly_ctx_set_searchdir(st->ctx, TESTS_DIR "/data/files");
+    assert_non_null(ly_ctx_load_module(st->ctx, "annotations", NULL));
+
+    st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR "/data/files/similar-annot-names.xml", LYD_XML, LYD_OPT_CONFIG);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+static void
+test_many_child_annot(void **state)
+{
+    struct state *st = (*state);
+    int ret;
+
+    ly_ctx_set_searchdir(st->ctx, TESTS_DIR "/data/files");
+    assert_non_null(ly_ctx_load_module(st->ctx, "annotations", NULL));
+
+    st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR "/data/files/many-childs-annot.xml", LYD_XML, LYD_OPT_CONFIG);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+static void
+test_union(void **state)
+{
+    struct state *st = (*state);
+    int ret;
+
+    ly_ctx_set_searchdir(st->ctx, TESTS_DIR "/data/files");
+    assert_non_null(ly_ctx_load_module(st->ctx, "union", NULL));
+
+    st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR "/data/files/union.xml", LYD_XML, LYD_OPT_CONFIG);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+static void
+test_union2(void **state)
+{
+    struct state *st = (*state);
+    int ret;
+
+    ly_ctx_set_searchdir(st->ctx, TESTS_DIR "/data/files");
+    assert_non_null(ly_ctx_load_module(st->ctx, "statements", NULL));
+
+    st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR "/data/files/union2.xml", LYD_XML, LYD_OPT_CONFIG);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+static void
+test_collisions(void **state)
+{
+    struct state *st = (*state);
+    int ret;
+
+    ly_ctx_set_searchdir(st->ctx, TESTS_DIR "/data/files");
+    assert_non_null(ly_ctx_load_module(st->ctx, "annotations", NULL));
+
+    st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR "/data/files/collisions.xml", LYD_XML, LYD_OPT_CONFIG);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+static void
+test_anydata(void **state)
+{
+    struct state *st = (*state);
+    const struct lys_module *mod;
+    int ret;
+    const char *test_anydata =
+            "module test-anydata {"
+            "   namespace \"urn:test-anydata\";"
+            "   prefix ya;"
+            ""
+            "   container cont {"
+            "       anydata ntf;"
+            "   }"
+            "}";
+
+    assert_non_null(ly_ctx_load_module(st->ctx, "ietf-netconf-notifications", NULL));
+
+    st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR "/data/files/ietf-netconf-notifications.json", LYD_JSON, LYD_OPT_NOTIF | LYD_OPT_TRUSTED, NULL);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    / *get notification in LYB format to set as anydata content * /
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    lyd_free_withsiblings(st->dt1);
+    st->dt1 = NULL;
+
+    / *now comes the real test, test anydata * /
+    mod = lys_parse_mem(st->ctx, test_anydata, LYS_YANG);
+    assert_non_null(mod);
+
+    st->dt1 = lyd_new(NULL, mod, "cont");
+    assert_non_null(st->dt1);
+
+    assert_non_null(lyd_new_anydata(st->dt1, NULL, "ntf", st->mem, LYD_ANYDATA_LYBD));
+    st->mem = NULL;
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    ret = lyd_validate(&st->dt1, LYD_OPT_CONFIG, NULL);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+
+    /* and also test the embedded notification itself */
+    free(st->mem);
+    ret = lyd_lyb_data_length(((struct lyd_node_anydata *)st->dt1->child)->value.mem);
+    st->mem = malloc(ret);
+    memcpy(st->mem, ((struct lyd_node_anydata *)st->dt1->child)->value.mem, ret);
+
+    lyd_free_withsiblings(st->dt2);
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_NOTIF | LYD_OPT_STRICT | LYD_OPT_NOEXTDEPS, NULL);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    /* parse the JSON again for this comparison */
+    lyd_free_withsiblings(st->dt1);
+    st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR "/data/files/ietf-netconf-notifications.json", LYD_JSON, LYD_OPT_NOTIF | LYD_OPT_TRUSTED, NULL);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+static void
+test_submodule_feature(void **state)
+{
+    struct state *st = (*state);
+    const struct lys_module *mod;
+    int ret;
+
+    ly_ctx_set_searchdir(st->ctx, TESTS_DIR "/data/files");
+    mod = ly_ctx_load_module(st->ctx, "feature-submodule-main", NULL);
+    assert_non_null(mod);
+    assert_int_equal(lys_features_enable(mod, "test-submodule-feature"), 0);
+
+    st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR "/data/files/test-submodule-feature.json", LYD_JSON, LYD_OPT_CONFIG);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+static void
+test_coliding_augments(void **state)
+{
+    struct state *st = (*state);
+    int ret;
+
+    ly_ctx_set_searchdir(st->ctx, TESTS_DIR "/data/files");
+    assert_non_null(ly_ctx_load_module(st->ctx, "augment-target", NULL));
+    assert_non_null(ly_ctx_load_module(st->ctx, "augment0", NULL));
+    assert_non_null(ly_ctx_load_module(st->ctx, "augment1", NULL));
+
+    st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR "/data/files/augment.xml", LYD_XML, LYD_OPT_CONFIG);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+static void
+test_leafrefs(void **state)
+{
+    struct state *st = (*state);
+    int ret;
+
+    ly_ctx_set_searchdir(st->ctx, TESTS_DIR "/data/files");
+    assert_non_null(ly_ctx_load_module(st->ctx, "leafrefs2", NULL));
+
+    st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR "/data/files/leafrefs2.json", LYD_JSON, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+#endif
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(tests_leaflist),
+        UTEST(tests_list),
+        UTEST(tests_any),
+        UTEST(test_ietf_interfaces, setup),
+        UTEST(test_origin, setup),
+        UTEST(test_statements, setup),
+        UTEST(test_opaq, setup),
+        UTEST(test_collisions, setup),
+#if 0
+        cmocka_unit_test_setup_teardown(test_types, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_annotations, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_similar_annot_names, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_many_child_annot, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_union, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_union2, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_collisions, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_anydata, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_submodule_feature, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_coliding_augments, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_leafrefs, setup_f, teardown_f),
+#endif
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/data/test_merge.c b/tests/utests/data/test_merge.c
new file mode 100644
index 0000000..3e7b772
--- /dev/null
+++ b/tests/utests/data/test_merge.c
@@ -0,0 +1,756 @@
+/**
+ * @file test_merge.c
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief tests for complex data merges.
+ *
+ * Copyright (c) 2020 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "libyang.h"
+
+#define LYD_TREE_CREATE(INPUT, MODEL) \
+                CHECK_PARSE_LYD_PARAM(INPUT, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, MODEL)
+
+#define CONTEXT_CREATE \
+                CONTEXT_CREATE_PATH(NULL)
+
+#define LYD_TREE_CHECK_CHAR(MODEL, TEXT, PARAMS) \
+                CHECK_LYD_STRING_PARAM(MODEL, TEXT, LYD_XML, LYD_PRINT_WITHSIBLINGS | PARAMS)
+
+static void
+test_batch(void **state)
+{
+    const char *start =
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+            "  <module>\n"
+            "    <name>yang</name>\n"
+            "    <revision>2016-02-11</revision>\n"
+            "    <conformance-type>implement</conformance-type>\n"
+            "  </module>\n"
+            "</modules-state>\n";
+    const char *data[] = {
+        "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+        "  <module>\n"
+        "    <name>ietf-yang-library</name>\n"
+        "    <revision>2016-02-01</revision>\n"
+        "    <conformance-type>implement</conformance-type>\n"
+        "  </module>\n"
+        "</modules-state>\n",
+        "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+        "  <module>\n"
+        "    <name>ietf-netconf-acm</name>\n"
+        "    <revision>2012-02-22</revision>\n"
+        "    <conformance-type>implement</conformance-type>\n"
+        "  </module>\n"
+        "</modules-state>\n",
+        "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+        "  <module>\n"
+        "    <name>ietf-netconf</name>\n"
+        "    <revision>2011-06-01</revision>\n"
+        "    <conformance-type>implement</conformance-type>\n"
+        "  </module>\n"
+        "</modules-state>\n",
+        "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+        "  <module>\n"
+        "    <name>ietf-netconf-monitoring</name>\n"
+        "    <revision>2010-10-04</revision>\n"
+        "    <conformance-type>implement</conformance-type>\n"
+        "  </module>\n"
+        "</modules-state>\n",
+        "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+        "  <module>\n"
+        "    <name>ietf-netconf-with-defaults</name>\n"
+        "    <revision>2011-06-01</revision>\n"
+        "    <conformance-type>implement</conformance-type>\n"
+        "  </module>\n"
+        "</modules-state>\n",
+        "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+        "  <module>\n"
+        "    <name>yang</name>\n"
+        "    <revision>2016-02-11</revision>\n"
+        "    <namespace>urn:ietf:params:xml:ns:yang:1</namespace>\n"
+        "    <conformance-type>implement</conformance-type>\n"
+        "  </module>\n"
+        "</modules-state>\n",
+        "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+        "  <module>\n"
+        "    <name>ietf-yang-library</name>\n"
+        "    <revision>2016-02-01</revision>\n"
+        "    <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>\n"
+        "    <conformance-type>implement</conformance-type>\n"
+        "  </module>\n"
+        "</modules-state>\n",
+        "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+        "  <module>\n"
+        "    <name>ietf-netconf-acm</name>\n"
+        "    <revision>2012-02-22</revision>\n"
+        "    <namespace>urn:ietf:params:xml:ns:yang:ietf-netconf-acm</namespace>\n"
+        "    <conformance-type>implement</conformance-type>\n"
+        "  </module>\n"
+        "</modules-state>\n",
+        "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+        "  <module>\n"
+        "    <name>ietf-netconf</name>\n"
+        "    <revision>2011-06-01</revision>\n"
+        "    <namespace>urn:ietf:params:xml:ns:netconf:base:1.0</namespace>\n"
+        "    <feature>writable-running</feature>\n"
+        "    <feature>candidate</feature>\n"
+        "    <feature>rollback-on-error</feature>\n"
+        "    <feature>validate</feature>\n"
+        "    <feature>startup</feature>\n"
+        "    <feature>xpath</feature>\n"
+        "    <conformance-type>implement</conformance-type>\n"
+        "  </module>\n"
+        "</modules-state>\n",
+        "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+        "  <module>\n"
+        "    <name>ietf-netconf-monitoring</name>\n"
+        "    <revision>2010-10-04</revision>\n"
+        "    <namespace>urn:ietf:params:xml:ns:yang:ietf-netconf-monitoring</namespace>\n"
+        "    <conformance-type>implement</conformance-type>\n"
+        "  </module>\n"
+        "</modules-state>\n",
+        "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+        "  <module>\n"
+        "    <name>ietf-netconf-with-defaults</name>\n"
+        "    <revision>2011-06-01</revision>\n"
+        "    <namespace>urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults</namespace>\n"
+        "    <conformance-type>implement</conformance-type>\n"
+        "  </module>\n"
+        "</modules-state>\n"
+    };
+    const char *output_template =
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n"
+            "  <module>\n"
+            "    <name>yang</name>\n"
+            "    <revision>2016-02-11</revision>\n"
+            "    <namespace>urn:ietf:params:xml:ns:yang:1</namespace>\n"
+            "    <conformance-type>implement</conformance-type>\n"
+            "  </module>\n"
+            "  <module>\n"
+            "    <name>ietf-yang-library</name>\n"
+            "    <revision>2016-02-01</revision>\n"
+            "    <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>\n"
+            "    <conformance-type>implement</conformance-type>\n"
+            "  </module>\n"
+            "  <module>\n"
+            "    <name>ietf-netconf-acm</name>\n"
+            "    <revision>2012-02-22</revision>\n"
+            "    <namespace>urn:ietf:params:xml:ns:yang:ietf-netconf-acm</namespace>\n"
+            "    <conformance-type>implement</conformance-type>\n"
+            "  </module>\n"
+            "  <module>\n"
+            "    <name>ietf-netconf</name>\n"
+            "    <revision>2011-06-01</revision>\n"
+            "    <namespace>urn:ietf:params:xml:ns:netconf:base:1.0</namespace>\n"
+            "    <feature>writable-running</feature>\n"
+            "    <feature>candidate</feature>\n"
+            "    <feature>rollback-on-error</feature>\n"
+            "    <feature>validate</feature>\n"
+            "    <feature>startup</feature>\n"
+            "    <feature>xpath</feature>\n"
+            "    <conformance-type>implement</conformance-type>\n"
+            "  </module>\n"
+            "  <module>\n"
+            "    <name>ietf-netconf-monitoring</name>\n"
+            "    <revision>2010-10-04</revision>\n"
+            "    <namespace>urn:ietf:params:xml:ns:yang:ietf-netconf-monitoring</namespace>\n"
+            "    <conformance-type>implement</conformance-type>\n"
+            "  </module>\n"
+            "  <module>\n"
+            "    <name>ietf-netconf-with-defaults</name>\n"
+            "    <revision>2011-06-01</revision>\n"
+            "    <namespace>urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults</namespace>\n"
+            "    <conformance-type>implement</conformance-type>\n"
+            "  </module>\n"
+            "</modules-state>\n";
+
+    struct lyd_node *target;
+
+    CHECK_PARSE_LYD_PARAM(start, LYD_XML, LYD_PARSE_ONLY, 0, LY_SUCCESS, target);
+
+    for (int32_t i = 0; i < 11; ++i) {
+        struct lyd_node *source;
+
+        CHECK_PARSE_LYD_PARAM(data[i], LYD_XML, LYD_PARSE_ONLY, 0, LY_SUCCESS, source);
+        assert_int_equal(LY_SUCCESS, lyd_merge_siblings(&target, source, LYD_MERGE_DESTRUCT));
+    }
+
+    LYD_TREE_CHECK_CHAR(target, output_template, 0);
+
+    lyd_free_all(target);
+}
+
+static void
+test_leaf(void **state)
+{
+    const char *sch = "module x {"
+            "  namespace urn:x;"
+            "  prefix x;"
+            "    container A {"
+            "      leaf f1 {type string;}"
+            "      container B {"
+            "        leaf f2 {type string;}"
+            "      }"
+            "    }"
+            "  }";
+    const char *trg = "<A xmlns=\"urn:x\"> <f1>block</f1> </A>";
+    const char *src = "<A xmlns=\"urn:x\"> <f1>aa</f1> <B> <f2>bb</f2> </B> </A>";
+    const char *result = "<A xmlns=\"urn:x\"><f1>aa</f1><B><f2>bb</f2></B></A>";
+    struct lyd_node *source, *target;
+
+    UTEST_ADD_MODULE(sch, LYS_IN_YANG, NULL, NULL);
+
+    LYD_TREE_CREATE(src, source);
+    LYD_TREE_CREATE(trg, target);
+
+    /* merge them */
+    assert_int_equal(lyd_merge_siblings(&target, source, 0), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&target, NULL, LYD_VALIDATE_PRESENT, NULL), LY_SUCCESS);
+
+    /* check the result */
+    LYD_TREE_CHECK_CHAR(target, result, LYD_PRINT_SHRINK);
+
+    lyd_free_all(target);
+    lyd_free_all(source);
+}
+
+static void
+test_container(void **state)
+{
+    const char *sch =
+            "module A {\n"
+            "    namespace \"aa:A\";\n"
+            "    prefix A;\n"
+            "    container A {\n"
+            "        leaf f1 {type string;}\n"
+            "        container B {\n"
+            "            leaf f2 {type string;}\n"
+            "        }\n"
+            "        container C {\n"
+            "            leaf f3 {type string;}\n"
+            "        }\n"
+            "    }\n"
+            "}\n";
+
+    const char *trg = "<A xmlns=\"aa:A\"> <B> <f2>aaa</f2> </B> </A>";
+    const char *src = "<A xmlns=\"aa:A\"> <C> <f3>bbb</f3> </C> </A>";
+    const char *result = "<A xmlns=\"aa:A\"><B><f2>aaa</f2></B><C><f3>bbb</f3></C></A>";
+    struct lyd_node *source, *target;
+
+    UTEST_ADD_MODULE(sch, LYS_IN_YANG, NULL, NULL);
+
+    LYD_TREE_CREATE(src, source);
+    LYD_TREE_CREATE(trg, target);
+
+    /* merge them */
+    assert_int_equal(lyd_merge_siblings(&target, source, 0), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&target, NULL, LYD_VALIDATE_PRESENT, NULL), LY_SUCCESS);
+
+    /* check the result */
+    LYD_TREE_CHECK_CHAR(target, result, LYD_PRINT_SHRINK);
+
+    /* destroy */
+    lyd_free_all(source);
+    lyd_free_all(target);
+}
+
+static void
+test_list(void **state)
+{
+    const char *sch =
+            "module merge {\n"
+            "    namespace \"http://test/merge\";\n"
+            "    prefix merge;\n"
+            "\n"
+            "    container inner1 {\n"
+            "        list b-list1 {\n"
+            "            key p1;\n"
+            "            leaf p1 {\n"
+            "                type uint8;\n"
+            "            }\n"
+            "            leaf p2 {\n"
+            "                type string;\n"
+            "            }\n"
+            "            leaf p3 {\n"
+            "                type boolean;\n"
+            "                default false;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}\n";
+
+    const char *trg =
+            "<inner1 xmlns=\"http://test/merge\">\n"
+            "  <b-list1>\n"
+            "    <p1>1</p1>\n"
+            "    <p2>a</p2>\n"
+            "    <p3>true</p3>\n"
+            "  </b-list1>\n"
+            "</inner1>\n";
+    const char *src =
+            "<inner1 xmlns=\"http://test/merge\">\n"
+            "  <b-list1>\n"
+            "    <p1>1</p1>\n"
+            "    <p2>b</p2>\n"
+            "  </b-list1>\n"
+            "</inner1>\n";
+    const char *result =
+            "<inner1 xmlns=\"http://test/merge\">\n"
+            "  <b-list1>\n"
+            "    <p1>1</p1>\n"
+            "    <p2>b</p2>\n"
+            "    <p3>true</p3>\n"
+            "  </b-list1>\n"
+            "</inner1>\n";
+    struct lyd_node *source, *target;
+
+    UTEST_ADD_MODULE(sch, LYS_IN_YANG, NULL, NULL);
+
+    LYD_TREE_CREATE(src, source);
+    LYD_TREE_CREATE(trg, target);
+
+    /* merge them */
+    assert_int_equal(lyd_merge_siblings(&target, source, 0), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&target, NULL, LYD_VALIDATE_PRESENT, NULL), LY_SUCCESS);
+
+    /* check the result */
+    LYD_TREE_CHECK_CHAR(target, result, 0);
+
+    lyd_free_all(target);
+    lyd_free_all(source);
+}
+
+static void
+test_list2(void **state)
+{
+    const char *sch =
+            "module merge {\n"
+            "    namespace \"http://test/merge\";\n"
+            "    prefix merge;\n"
+            "\n"
+            "    container inner1 {\n"
+            "        list b-list1 {\n"
+            "            key p1;\n"
+            "            leaf p1 {\n"
+            "                type uint8;\n"
+            "            }\n"
+            "            leaf p2 {\n"
+            "                type string;\n"
+            "            }\n"
+            "            container inner2 {\n"
+            "                leaf p3 {\n"
+            "                    type boolean;\n"
+            "                    default false;\n"
+            "                }\n"
+            "                leaf p4 {\n"
+            "                    type string;\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}\n";
+
+    const char *trg =
+            "<inner1 xmlns=\"http://test/merge\">\n"
+            "  <b-list1>\n"
+            "    <p1>1</p1>\n"
+            "    <p2>a</p2>\n"
+            "    <inner2>\n"
+            "      <p4>val</p4>\n"
+            "    </inner2>\n"
+            "  </b-list1>\n"
+            "</inner1>\n";
+    const char *src =
+            "<inner1 xmlns=\"http://test/merge\">\n"
+            "  <b-list1>\n"
+            "    <p1>1</p1>\n"
+            "    <p2>b</p2>\n"
+            "  </b-list1>\n"
+            "</inner1>\n";
+    const char *result =
+            "<inner1 xmlns=\"http://test/merge\">\n"
+            "  <b-list1>\n"
+            "    <p1>1</p1>\n"
+            "    <p2>b</p2>\n"
+            "    <inner2>\n"
+            "      <p4>val</p4>\n"
+            "    </inner2>\n"
+            "  </b-list1>\n"
+            "</inner1>\n";
+    struct lyd_node *source, *target;
+
+    UTEST_ADD_MODULE(sch, LYS_IN_YANG, NULL, NULL);
+
+    LYD_TREE_CREATE(src, source);
+    LYD_TREE_CREATE(trg, target);
+
+    /* merge them */
+    assert_int_equal(lyd_merge_siblings(&target, source, 0), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&target, NULL, LYD_VALIDATE_PRESENT, NULL), LY_SUCCESS);
+
+    /* check the result */
+    LYD_TREE_CHECK_CHAR(target, result, 0);
+
+    lyd_free_all(source);
+    lyd_free_all(target);
+}
+
+static void
+test_dup_inst_list(void **state)
+{
+    const char *sch =
+            "module merge {\n"
+            "    namespace \"http://test/merge\";\n"
+            "    prefix merge;\n"
+            "\n"
+            "    container inner1 {\n"
+            "        config false;\n"
+            "        list b-list1 {\n"
+            "            leaf p1 {\n"
+            "                type uint8;\n"
+            "            }\n"
+            "            leaf p2 {\n"
+            "                type string;\n"
+            "            }\n"
+            "            container inner2 {\n"
+            "                leaf p4 {\n"
+            "                    type string;\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}\n";
+
+    const char *trg =
+            "<inner1 xmlns=\"http://test/merge\">\n"
+            "  <b-list1>\n"
+            "    <p1>1</p1>\n"
+            "    <p2>b</p2>\n"
+            "  </b-list1>\n"
+            "  <b-list1>\n"
+            "    <p1>1</p1>\n"
+            "    <p2>a</p2>\n"
+            "    <inner2>\n"
+            "      <p4>val</p4>\n"
+            "    </inner2>\n"
+            "  </b-list1>\n"
+            "</inner1>\n";
+    const char *src =
+            "<inner1 xmlns=\"http://test/merge\">\n"
+            "  <b-list1>\n"
+            "    <p1>1</p1>\n"
+            "    <p2>b</p2>\n"
+            "  </b-list1>\n"
+            "  <b-list1>\n"
+            "    <p1>2</p1>\n"
+            "    <p2>a</p2>\n"
+            "  </b-list1>\n"
+            "</inner1>\n";
+    const char *result =
+            "<inner1 xmlns=\"http://test/merge\">\n"
+            "  <b-list1>\n"
+            "    <p1>1</p1>\n"
+            "    <p2>b</p2>\n"
+            "  </b-list1>\n"
+            "  <b-list1>\n"
+            "    <p1>1</p1>\n"
+            "    <p2>a</p2>\n"
+            "    <inner2>\n"
+            "      <p4>val</p4>\n"
+            "    </inner2>\n"
+            "  </b-list1>\n"
+            "  <b-list1>\n"
+            "    <p1>2</p1>\n"
+            "    <p2>a</p2>\n"
+            "  </b-list1>\n"
+            "</inner1>\n";
+    struct lyd_node *source, *target;
+
+    UTEST_ADD_MODULE(sch, LYS_IN_YANG, NULL, NULL);
+
+    LYD_TREE_CREATE(src, source);
+    LYD_TREE_CREATE(trg, target);
+
+    /* merge them */
+    assert_int_equal(lyd_merge_siblings(&target, source, 0), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&target, NULL, LYD_VALIDATE_PRESENT, NULL), LY_SUCCESS);
+
+    /* check the result */
+    LYD_TREE_CHECK_CHAR(target, result, 0);
+
+    lyd_free_all(source);
+    lyd_free_all(target);
+}
+
+static void
+test_dup_inst_llist(void **state)
+{
+    const char *sch =
+            "module merge {\n"
+            "    namespace \"http://test/merge\";\n"
+            "    prefix merge;\n"
+            "\n"
+            "    container inner1 {\n"
+            "        config false;\n"
+            "        leaf-list b-llist1 {\n"
+            "            type string;\n"
+            "        }\n"
+            "    }\n"
+            "}\n";
+
+    const char *trg =
+            "<inner1 xmlns=\"http://test/merge\">\n"
+            "  <b-llist1>a</b-llist1>\n"
+            "  <b-llist1>b</b-llist1>\n"
+            "  <b-llist1>c</b-llist1>\n"
+            "  <b-llist1>d</b-llist1>\n"
+            "  <b-llist1>a</b-llist1>\n"
+            "  <b-llist1>b</b-llist1>\n"
+            "  <b-llist1>c</b-llist1>\n"
+            "  <b-llist1>d</b-llist1>\n"
+            "</inner1>\n";
+    const char *src =
+            "<inner1 xmlns=\"http://test/merge\">\n"
+            "  <b-llist1>d</b-llist1>\n"
+            "  <b-llist1>c</b-llist1>\n"
+            "  <b-llist1>b</b-llist1>\n"
+            "  <b-llist1>a</b-llist1>\n"
+            "  <b-llist1>a</b-llist1>\n"
+            "  <b-llist1>a</b-llist1>\n"
+            "  <b-llist1>a</b-llist1>\n"
+            "  <b-llist1>f</b-llist1>\n"
+            "  <b-llist1>f</b-llist1>\n"
+            "</inner1>\n";
+    const char *result =
+            "<inner1 xmlns=\"http://test/merge\">\n"
+            "  <b-llist1>a</b-llist1>\n"
+            "  <b-llist1>b</b-llist1>\n"
+            "  <b-llist1>c</b-llist1>\n"
+            "  <b-llist1>d</b-llist1>\n"
+            "  <b-llist1>a</b-llist1>\n"
+            "  <b-llist1>b</b-llist1>\n"
+            "  <b-llist1>c</b-llist1>\n"
+            "  <b-llist1>d</b-llist1>\n"
+            "  <b-llist1>a</b-llist1>\n"
+            "  <b-llist1>a</b-llist1>\n"
+            "  <b-llist1>f</b-llist1>\n"
+            "  <b-llist1>f</b-llist1>\n"
+            "</inner1>\n";
+    struct lyd_node *source, *target;
+
+    UTEST_ADD_MODULE(sch, LYS_IN_YANG, NULL, NULL);
+
+    LYD_TREE_CREATE(src, source);
+    LYD_TREE_CREATE(trg, target);
+
+    /* merge them */
+    assert_int_equal(lyd_merge_siblings(&target, source, 0), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&target, NULL, LYD_VALIDATE_PRESENT, NULL), LY_SUCCESS);
+
+    /* check the result */
+    LYD_TREE_CHECK_CHAR(target, result, 0);
+
+    lyd_free_all(source);
+    lyd_free_all(target);
+}
+
+static void
+test_case(void **state)
+{
+    const char *sch =
+            "module merge {\n"
+            "    namespace \"http://test/merge\";\n"
+            "    prefix merge;\n"
+            "    container cont {\n"
+            "        choice ch {\n"
+            "            container inner {\n"
+            "                leaf p1 {\n"
+            "                    type string;\n"
+            "                }\n"
+            "            }\n"
+            "            case c2 {\n"
+            "                leaf p1 {\n"
+            "                    type string;\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}\n";
+
+    const char *trg =
+            "<cont xmlns=\"http://test/merge\">\n"
+            "  <inner>\n"
+            "    <p1>1</p1>\n"
+            "  </inner>\n"
+            "</cont>\n";
+    const char *src =
+            "<cont xmlns=\"http://test/merge\">\n"
+            "  <p1>1</p1>\n"
+            "</cont>\n";
+    const char *result =
+            "<cont xmlns=\"http://test/merge\">\n"
+            "  <p1>1</p1>\n"
+            "</cont>\n";
+    struct lyd_node *source, *target;
+
+    UTEST_ADD_MODULE(sch, LYS_IN_YANG, NULL, NULL);
+
+    LYD_TREE_CREATE(src, source);
+    LYD_TREE_CREATE(trg, target);
+
+    /* merge them */
+    assert_int_equal(lyd_merge_siblings(&target, source, 0), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&target, NULL, LYD_VALIDATE_PRESENT, NULL), LY_SUCCESS);
+
+    /* check the result */
+    LYD_TREE_CHECK_CHAR(target, result, 0);
+
+    lyd_free_all(source);
+    lyd_free_all(target);
+}
+
+static void
+test_dflt(void **state)
+{
+    const char *sch =
+            "module merge-dflt {\n"
+            "    namespace \"urn:merge-dflt\";\n"
+            "    prefix md;\n"
+            "    container top {\n"
+            "        leaf a {\n"
+            "            type string;\n"
+            "        }\n"
+            "        leaf b {\n"
+            "            type string;\n"
+            "        }\n"
+            "        leaf c {\n"
+            "            type string;\n"
+            "            default \"c_dflt\";\n"
+            "        }\n"
+            "    }\n"
+            "}\n";
+    struct lyd_node *target = NULL;
+    struct lyd_node *source = NULL;
+
+    UTEST_ADD_MODULE(sch, LYS_IN_YANG, NULL, NULL);
+
+    assert_int_equal(lyd_new_path(NULL, UTEST_LYCTX, "/merge-dflt:top/c", "c_dflt", 0, &target), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&target, NULL, LYD_VALIDATE_PRESENT, NULL), LY_SUCCESS);
+
+    assert_int_equal(lyd_new_path(NULL, UTEST_LYCTX, "/merge-dflt:top/a", "a_val", 0, &source), LY_SUCCESS);
+    assert_int_equal(lyd_new_path(source, UTEST_LYCTX, "/merge-dflt:top/b", "b_val", 0, NULL), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&source, NULL, LYD_VALIDATE_PRESENT, NULL), LY_SUCCESS);
+
+    assert_int_equal(lyd_merge_siblings(&target, source, LYD_MERGE_DESTRUCT | LYD_MERGE_DEFAULTS), LY_SUCCESS);
+    source = NULL;
+
+    /* c should be replaced and now be default */
+    assert_string_equal(lyd_child(target)->prev->schema->name, "c");
+    assert_true(lyd_child(target)->prev->flags & LYD_DEFAULT);
+
+    lyd_free_all(target);
+    lyd_free_all(source);
+}
+
+static void
+test_dflt2(void **state)
+{
+    const char *sch =
+            "module merge-dflt {\n"
+            "    namespace \"urn:merge-dflt\";\n"
+            "    prefix md;\n"
+            "    container top {\n"
+            "        leaf a {\n"
+            "            type string;\n"
+            "        }\n"
+            "        leaf b {\n"
+            "            type string;\n"
+            "        }\n"
+            "        leaf c {\n"
+            "            type string;\n"
+            "            default \"c_dflt\";\n"
+            "        }\n"
+            "    }\n"
+            "}\n";
+    struct lyd_node *target;
+    struct lyd_node *source;
+
+    UTEST_ADD_MODULE(sch, LYS_IN_YANG, NULL, NULL);
+
+    assert_int_equal(lyd_new_path(NULL, UTEST_LYCTX, "/merge-dflt:top/c", "c_dflt", 0, &target), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&target, NULL, LYD_VALIDATE_PRESENT, NULL), LY_SUCCESS);
+
+    assert_int_equal(lyd_new_path(NULL, UTEST_LYCTX, "/merge-dflt:top/a", "a_val", 0, &source), LY_SUCCESS);
+    assert_int_equal(lyd_new_path(source, UTEST_LYCTX, "/merge-dflt:top/b", "b_val", 0, NULL), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&source, NULL, LYD_VALIDATE_PRESENT, NULL), LY_SUCCESS);
+
+    assert_int_equal(lyd_merge_siblings(&target, source, 0), LY_SUCCESS);
+
+    /* c should not be replaced, so c remains not default */
+    assert_false(lyd_child(target)->flags & LYD_DEFAULT);
+
+    lyd_free_all(target);
+    lyd_free_all(source);
+}
+
+static void
+test_leafrefs(void **state)
+{
+    const char *sch = "module x {"
+            "  namespace urn:x;"
+            "  prefix x;"
+            "  list l {"
+            "    key n;"
+            "    leaf n { type string; }"
+            "    leaf t { type string; }"
+            "    leaf r { type leafref { path '/l/n'; } }}}";
+    const char *trg = "<l xmlns=\"urn:x\"><n>a</n></l>"
+            "<l xmlns=\"urn:x\"><n>b</n><r>a</r></l>";
+    const char *src = "<l xmlns=\"urn:x\"><n>c</n><r>a</r></l>"
+            "<l xmlns=\"urn:x\"><n>a</n><t>*</t></l>";
+    const char *res = "<l xmlns=\"urn:x\"><n>a</n><t>*</t></l>"
+            "<l xmlns=\"urn:x\"><n>b</n><r>a</r></l>"
+            "<l xmlns=\"urn:x\"><n>c</n><r>a</r></l>";
+    struct lyd_node *source, *target;
+
+    UTEST_ADD_MODULE(sch, LYS_IN_YANG, NULL, NULL);
+
+    LYD_TREE_CREATE(src, source);
+    LYD_TREE_CREATE(trg, target);
+
+    assert_int_equal(lyd_merge_siblings(&target, source, 0), LY_SUCCESS);
+
+    LYD_TREE_CHECK_CHAR(target, res, LYD_PRINT_SHRINK);
+
+    lyd_free_all(source);
+    lyd_free_all(target);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_batch),
+        UTEST(test_leaf),
+        UTEST(test_container),
+        UTEST(test_list),
+        UTEST(test_list2),
+        UTEST(test_dup_inst_list),
+        UTEST(test_dup_inst_llist),
+        UTEST(test_case),
+        UTEST(test_dflt),
+        UTEST(test_dflt2),
+        UTEST(test_leafrefs),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/data/test_new.c b/tests/utests/data/test_new.c
new file mode 100644
index 0000000..7642960
--- /dev/null
+++ b/tests/utests/data/test_new.c
@@ -0,0 +1,446 @@
+/**
+ * @file test_new.c
+ * @author: Michal Vasko <mvasko@cesnet.cz>
+ * @brief unit tests for functions for creating data
+ *
+ * Copyright (c) 2020 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "libyang.h"
+
+/* common module for the tests */
+const char *schema_a = "module a {\n"
+        "  namespace urn:tests:a;\n"
+        "  prefix a;yang-version 1.1;\n"
+        "  list l1 {\n"
+        "    key \"a b\";\n"
+        "    leaf a {\n"
+        "      type string;\n"
+        "    }\n"
+        "    leaf b {\n"
+        "      type string;\n"
+        "    }\n"
+        "    leaf c {\n"
+        "      type string;\n"
+        "    }\n"
+        "  }\n"
+        "  list l11 {\n"
+        "    key \"a\";\n"
+        "    leaf a {\n"
+        "      type uint32;\n"
+        "    }\n"
+        "    leaf b {\n"
+        "      type uint32;\n"
+        "    }\n"
+        "  }\n"
+        "  leaf foo {\n"
+        "    type uint16;\n"
+        "  }\n"
+        "  leaf-list ll {\n"
+        "    type string;\n"
+        "  }\n"
+        "  container c {\n"
+        "    leaf-list x {\n"
+        "      type string;\n"
+        "    }\n"
+        "  }\n"
+        "  anydata any {\n"
+        "    config false;\n"
+        "  }\n"
+        "  leaf-list ll2 {\n"
+        "    config false;\n"
+        "    type string;\n"
+        "  }\n"
+        "  list l2 {\n"
+        "    config false;\n"
+        "    container c {\n"
+        "      leaf x {\n"
+        "        type string;\n"
+        "      }\n"
+        "    }\n"
+        "  }\n"
+        "  container c2 {\n"
+        "    config false;\n"
+        "    list l3 {\n"
+        "      leaf x {\n"
+        "        type string;\n"
+        "      }\n"
+        "      leaf y {\n"
+        "        type string;\n"
+        "      }\n"
+        "    }\n"
+        "  }\n"
+        "  rpc oper {\n"
+        "    input {\n"
+        "      leaf param {\n"
+        "        type string;\n"
+        "      }\n"
+        "    }\n"
+        "    output {\n"
+        "      leaf param {\n"
+        "        type int8;\n"
+        "      }\n"
+        "    }\n"
+        "  }\n"
+        "}\n";
+
+static void
+test_top_level(void **state)
+{
+    struct lys_module *mod;
+    struct lyd_node *node, *rpc;
+
+    UTEST_ADD_MODULE(schema_a, LYS_IN_YANG, NULL, &mod);
+
+    /* list */
+    assert_int_equal(lyd_new_list(NULL, mod, "l1", 0, &node, "val_a", "val_b"), LY_SUCCESS);
+    lyd_free_tree(node);
+
+    assert_int_equal(lyd_new_list2(NULL, mod, "l1", "[]", 0, &node), LY_EVALID);
+    CHECK_LOG_CTX("Unexpected XPath token \"]\" (\"]\").", "Schema location \"/a:l1\".");
+
+    assert_int_equal(lyd_new_list2(NULL, mod, "l1", "[key1='a'][key2='b']", 0, &node), LY_ENOTFOUND);
+    CHECK_LOG_CTX("Not found node \"key1\" in path.", "Schema location \"/a:l1\".");
+
+    assert_int_equal(lyd_new_list2(NULL, mod, "l1", "[a='a'][b='b'][c='c']", 0, &node), LY_EVALID);
+    CHECK_LOG_CTX("Key expected instead of leaf \"c\" in path.", "Schema location \"/a:l1\".");
+
+    assert_int_equal(lyd_new_list2(NULL, mod, "c", "[a='a'][b='b']", 0, &node), LY_ENOTFOUND);
+    CHECK_LOG_CTX("List node \"c\" not found.", NULL);
+
+    assert_int_equal(lyd_new_list2(NULL, mod, "l1", "[a='a'][b='b']", 0, &node), LY_SUCCESS);
+    lyd_free_tree(node);
+
+    assert_int_equal(lyd_new_list2(NULL, mod, "l1", "[a=''][b='']", 0, &node), LY_SUCCESS);
+    lyd_free_tree(node);
+
+    assert_int_equal(lyd_new_list2(NULL, mod, "l1", "[a:a='a'][a:b='b']", 0, &node), LY_SUCCESS);
+    lyd_free_tree(node);
+
+    assert_int_equal(lyd_new_list2(NULL, mod, "l1", "[a=   'a']\n[b  =\t'b']", 0, &node), LY_SUCCESS);
+    lyd_free_tree(node);
+
+    /* leaf */
+    assert_int_equal(lyd_new_term(NULL, mod, "foo", "[a='a'][b='b'][c='c']", 0, &node), LY_EVALID);
+    CHECK_LOG_CTX("Invalid type uint16 value \"[a='a'][b='b'][c='c']\".", "Schema location \"/a:foo\".");
+
+    assert_int_equal(lyd_new_term(NULL, mod, "c", "value", 0, &node), LY_ENOTFOUND);
+    CHECK_LOG_CTX("Term node \"c\" not found.", NULL);
+
+    assert_int_equal(lyd_new_term(NULL, mod, "foo", "256", 0, &node), LY_SUCCESS);
+    lyd_free_tree(node);
+
+    /* leaf-list */
+    assert_int_equal(lyd_new_term(NULL, mod, "ll", "ahoy", 0, &node), LY_SUCCESS);
+    lyd_free_tree(node);
+
+    /* container */
+    assert_int_equal(lyd_new_inner(NULL, mod, "c", 0, &node), LY_SUCCESS);
+    lyd_free_tree(node);
+
+    assert_int_equal(lyd_new_inner(NULL, mod, "l1", 0, &node), LY_ENOTFOUND);
+    CHECK_LOG_CTX("Inner node (container, notif, RPC, or action) \"l1\" not found.", NULL);
+
+    assert_int_equal(lyd_new_inner(NULL, mod, "l2", 0, &node), LY_ENOTFOUND);
+    CHECK_LOG_CTX("Inner node (container, notif, RPC, or action) \"l2\" not found.", NULL);
+
+    /* anydata */
+    assert_int_equal(lyd_new_any(NULL, mod, "any", "{\"node\":\"val\"}", 0, LYD_ANYDATA_STRING, 0, &node), LY_SUCCESS);
+    lyd_free_tree(node);
+    assert_int_equal(lyd_new_any(NULL, mod, "any", "<node>val</node>", 0, LYD_ANYDATA_STRING, 0, &node), LY_SUCCESS);
+    lyd_free_tree(node);
+
+    /* key-less list */
+    assert_int_equal(lyd_new_list2(NULL, mod, "l2", "[a='a'][b='b']", 0, &node), LY_EVALID);
+    CHECK_LOG_CTX("List predicate defined for keyless list \"l2\" in path.", "Schema location \"/a:l2\".");
+
+    assert_int_equal(lyd_new_list2(NULL, mod, "l2", "", 0, &node), LY_SUCCESS);
+    lyd_free_tree(node);
+
+    assert_int_equal(lyd_new_list2(NULL, mod, "l2", NULL, 0, &node), LY_SUCCESS);
+    lyd_free_tree(node);
+
+    assert_int_equal(lyd_new_list(NULL, mod, "l2", 0, &node), LY_SUCCESS);
+    lyd_free_tree(node);
+
+    /* RPC */
+    assert_int_equal(lyd_new_inner(NULL, mod, "oper", 0, &rpc), LY_SUCCESS);
+    assert_int_equal(lyd_new_term(rpc, mod, "param", "22", 0, &node), LY_SUCCESS);
+    assert_int_equal(LY_TYPE_STRING, ((struct lysc_node_leaf *)node->schema)->type->basetype);
+    assert_int_equal(lyd_new_term(rpc, mod, "param", "22", 1, &node), LY_SUCCESS);
+    assert_int_equal(LY_TYPE_INT8, ((struct lysc_node_leaf *)node->schema)->type->basetype);
+    lyd_free_tree(rpc);
+}
+
+static void
+test_opaq(void **state)
+{
+    struct lyd_node *root, *node;
+    struct lyd_node_opaq *opq;
+
+    UTEST_ADD_MODULE(schema_a, LYS_IN_YANG, NULL, NULL);
+
+    assert_int_equal(lyd_new_opaq(NULL, UTEST_LYCTX, "node1", NULL, NULL, "my-module", &root), LY_SUCCESS);
+    assert_null(root->schema);
+    opq = (struct lyd_node_opaq *)root;
+    assert_string_equal(opq->name.name, "node1");
+    assert_string_equal(opq->name.module_name, "my-module");
+    assert_string_equal(opq->value, "");
+
+    assert_int_equal(lyd_new_opaq(root, NULL, "node2", "value", NULL, "my-module2", &node), LY_SUCCESS);
+    assert_null(node->schema);
+    opq = (struct lyd_node_opaq *)node;
+    assert_string_equal(opq->name.name, "node2");
+    assert_string_equal(opq->name.module_name, "my-module2");
+    assert_string_equal(opq->value, "value");
+    assert_ptr_equal(opq->parent, root);
+
+    lyd_free_tree(root);
+}
+
+static void
+test_path(void **state)
+{
+    LY_ERR ret;
+    struct lyd_node *root, *node, *parent;
+    struct lys_module *mod;
+    char *str;
+
+    UTEST_ADD_MODULE(schema_a, LYS_IN_YANG, NULL, &mod);
+
+    /* create 2 nodes */
+    ret = lyd_new_path2(NULL, UTEST_LYCTX, "/a:c/x[.='val']", "vvv", 0, 0, 0, &root, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(root);
+    assert_string_equal(root->schema->name, "c");
+    assert_non_null(node);
+    assert_string_equal(node->schema->name, "x");
+    assert_string_equal("val", lyd_get_value(node));
+
+    /* append another */
+    ret = lyd_new_path2(root, NULL, "/a:c/x", "val2", 0, 0, 0, &parent, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_ptr_equal(parent, node);
+    assert_string_equal(node->schema->name, "x");
+    assert_string_equal("val2", lyd_get_value(node));
+
+    /* and a last one */
+    ret = lyd_new_path2(root, NULL, "x", "val3", 0, 0, 0, &parent, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_ptr_equal(parent, node);
+    assert_string_equal(node->schema->name, "x");
+    assert_string_equal("val3", lyd_get_value(node));
+
+    lyd_free_tree(root);
+
+    /* try LYD_NEWOPT_OPAQ */
+    ret = lyd_new_path2(NULL, UTEST_LYCTX, "/a:l1", NULL, 0, 0, 0, NULL, NULL);
+    assert_int_equal(ret, LY_EINVAL);
+    CHECK_LOG_CTX("Predicate missing for list \"l1\" in path \"/a:l1\".", "Schema location \"/a:l1\".");
+
+    ret = lyd_new_path2(NULL, UTEST_LYCTX, "/a:l1", NULL, 0, 0, LYD_NEW_PATH_OPAQ, NULL, &root);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(root);
+    assert_null(root->schema);
+
+    lyd_free_tree(root);
+
+    ret = lyd_new_path2(NULL, UTEST_LYCTX, "/a:foo", NULL, 0, 0, 0, NULL, NULL);
+    assert_int_equal(ret, LY_EVALID);
+    CHECK_LOG_CTX("Invalid type uint16 empty value.", "Schema location \"/a:foo\".");
+
+    ret = lyd_new_path2(NULL, UTEST_LYCTX, "/a:foo", NULL, 0, 0, LYD_NEW_PATH_OPAQ, NULL, &root);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(root);
+    assert_null(root->schema);
+
+    lyd_free_tree(root);
+
+    ret = lyd_new_path(NULL, UTEST_LYCTX, "/a:l11", NULL, LYD_NEW_PATH_OPAQ, &root);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(root);
+    assert_null(root->schema);
+
+    ret = lyd_new_path(root, NULL, "a", NULL, LYD_NEW_PATH_OPAQ, NULL);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(lyd_child(root));
+    assert_null(lyd_child(root)->schema);
+
+    ret = lyd_new_path(root, NULL, "b", NULL, LYD_NEW_PATH_OPAQ, NULL);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(lyd_child(root)->next);
+    assert_null(lyd_child(root)->next->schema);
+
+    lyd_free_tree(root);
+
+    /* key-less list */
+    ret = lyd_new_path2(NULL, UTEST_LYCTX, "/a:c2/l3/x", "val1", 0, 0, 0, &root, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(root);
+    assert_string_equal(node->schema->name, "x");
+    assert_string_equal("val1", lyd_get_value(node));
+
+    ret = lyd_new_path2(root, NULL, "/a:c2/l3[1]", NULL, 0, 0, 0, NULL, &node);
+    assert_int_equal(ret, LY_EEXIST);
+
+    ret = lyd_new_path2(root, NULL, "/a:c2/l3[2]/x", "val2", 0, 0, 0, NULL, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+
+    ret = lyd_new_path2(root, NULL, "/a:c2/l3/x", "val3", 0, 0, 0, NULL, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(node);
+
+    ret = lyd_new_path2(root, NULL, "/a:c2/l3[4]/x", "empty", 0, 0, 0, NULL, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(node);
+
+    ret = lyd_new_path2(root, NULL, "/a:c2/l3[4]/x", "val4", 0, 0, LYD_NEW_PATH_UPDATE, NULL, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(node);
+
+    ret = lyd_new_path2(root, NULL, "/a:c2/l3[5]/x", "val5", 0, 0, 0, NULL, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(node);
+
+    ret = lyd_new_path2(root, NULL, "/a:c2/l3[6]/x", "val6", 0, 0, 0, NULL, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(node);
+
+    lyd_print_mem(&str, root, LYD_XML, LYD_PRINT_WITHSIBLINGS);
+    assert_string_equal(str,
+            "<c2 xmlns=\"urn:tests:a\">\n"
+            "  <l3>\n"
+            "    <x>val1</x>\n"
+            "  </l3>\n"
+            "  <l3>\n"
+            "    <x>val2</x>\n"
+            "  </l3>\n"
+            "  <l3>\n"
+            "    <x>val3</x>\n"
+            "  </l3>\n"
+            "  <l3>\n"
+            "    <x>val4</x>\n"
+            "  </l3>\n"
+            "  <l3>\n"
+            "    <x>val5</x>\n"
+            "  </l3>\n"
+            "  <l3>\n"
+            "    <x>val6</x>\n"
+            "  </l3>\n"
+            "</c2>\n");
+    free(str);
+    lyd_free_siblings(root);
+
+    /* state leaf-list */
+    ret = lyd_new_path2(NULL, UTEST_LYCTX, "/a:ll2", "val_first", 0, 0, 0, &root, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(root);
+    assert_string_equal(node->schema->name, "ll2");
+    assert_string_equal("val_first", lyd_get_value(node));
+
+    ret = lyd_new_path2(root, NULL, "/a:ll2[1]", "", 0, 0, 0, NULL, &node);
+    assert_int_equal(ret, LY_EEXIST);
+
+    ret = lyd_new_path2(root, NULL, "/a:ll2[2]", "val2", 0, 0, 0, NULL, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+
+    ret = lyd_new_path2(root, NULL, "/a:ll2[1]", "val", 0, 0, LYD_NEW_PATH_UPDATE, NULL, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(node);
+
+    ret = lyd_new_path2(root, UTEST_LYCTX, "/a:ll2", "val3", 0, 0, 0, NULL, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(node);
+
+    ret = lyd_new_path2(root, NULL, "/a:ll2[3][.='val3']", NULL, 0, 0, 0, NULL, &node);
+    assert_int_equal(ret, LY_EVALID);
+
+    lyd_print_mem(&str, root, LYD_XML, LYD_PRINT_WITHSIBLINGS);
+    assert_string_equal(str,
+            "<ll2 xmlns=\"urn:tests:a\">val</ll2>\n"
+            "<ll2 xmlns=\"urn:tests:a\">val2</ll2>\n"
+            "<ll2 xmlns=\"urn:tests:a\">val3</ll2>\n");
+    free(str);
+    lyd_free_siblings(root);
+
+    /* anydata */
+    ret = lyd_new_path2(NULL, UTEST_LYCTX, "/a:any", "<elem>val</elem>", 0, LYD_ANYDATA_XML, 0, &root, NULL);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(root);
+
+    lyd_print_mem(&str, root, LYD_XML, LYD_PRINT_WITHSIBLINGS);
+    assert_string_equal(str,
+            "<any xmlns=\"urn:tests:a\">\n"
+            "  <elem>val</elem>\n"
+            "</any>\n");
+    free(str);
+    lyd_print_mem(&str, root, LYD_JSON, LYD_PRINT_WITHSIBLINGS);
+    assert_string_equal(str,
+            "{\n"
+            "  \"a:any\": {\n"
+            "    \"elem\": \"val\"\n"
+            "  }\n"
+            "}\n");
+    free(str);
+    lyd_free_siblings(root);
+}
+
+static void
+test_path_ext(void **state)
+{
+    LY_ERR ret;
+    struct lyd_node *root, *node;
+    struct lys_module *mod;
+    const char *mod_str = "module ext {yang-version 1.1; namespace urn:tests:extensions:ext; prefix e;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "rc:yang-data template {container c {leaf x {type string;} leaf y {type string;} leaf z {type string;}}}}";
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "ietf-restconf", "2017-01-26", NULL));
+
+    UTEST_ADD_MODULE(mod_str, LYS_IN_YANG, NULL, &mod);
+
+    /* create x */
+    ret = lyd_new_ext_path(NULL, &mod->compiled->exts[0], "/ext:c/x", "xxx", 0, &root);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_non_null(root);
+    assert_string_equal(root->schema->name, "c");
+    assert_non_null(node = lyd_child(root));
+    assert_string_equal(node->schema->name, "x");
+    assert_string_equal("xxx", lyd_get_value(node));
+
+    /* append y */
+    ret = lyd_new_ext_path(root, &mod->compiled->exts[0], "/ext:c/y", "yyy", 0, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_string_equal(node->schema->name, "y");
+    assert_string_equal("yyy", lyd_get_value(node));
+
+    /* append z */
+    ret = lyd_new_path(root, NULL, "ext:z", "zzz", 0, &node);
+    assert_int_equal(ret, LY_SUCCESS);
+    assert_string_equal(node->schema->name, "z");
+    assert_string_equal("zzz", lyd_get_value(node));
+
+    lyd_free_tree(root);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_top_level),
+        UTEST(test_opaq),
+        UTEST(test_path),
+        UTEST(test_path_ext),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/data/test_parser_json.c b/tests/utests/data/test_parser_json.c
new file mode 100644
index 0000000..d341e31
--- /dev/null
+++ b/tests/utests/data/test_parser_json.c
@@ -0,0 +1,793 @@
+/*
+ * @file test_parser_json.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for functions from parser_xml.c
+ *
+ * Copyright (c) 2019 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "context.h"
+#include "in.h"
+#include "out.h"
+#include "parser_data.h"
+#include "printer_data.h"
+#include "tests_config.h"
+#include "tree_data_internal.h"
+#include "tree_schema.h"
+
+static int
+setup(void **state)
+{
+    const char *schema = "module a {namespace urn:tests:a;prefix a;yang-version 1.1; import ietf-yang-metadata {prefix md;}"
+            "md:annotation hint { type int8;}"
+            "list l1 { key \"a b c\"; leaf a {type string;} leaf b {type string;} leaf c {type int16;}"
+            "  leaf d {type string;}"
+            "  container cont {leaf e {type boolean;}}"
+            "}"
+            "leaf foo { type string;}"
+            "container c {"
+            "    leaf x {type string;}"
+            "    action act { input { leaf al {type string;} } output { leaf al {type uint8;} } }"
+            "    notification n1 { leaf nl {type string;} }"
+            "}"
+            "container cp {presence \"container switch\"; leaf y {type string;} leaf z {type int8;}}"
+            "anydata any {config false;}"
+            "anyxml axml;"
+            "leaf-list ll1 { type uint8; }"
+            "leaf foo2 { type string; default \"default-val\"; }"
+            "leaf foo3 { type uint32; }"
+            "notification n2;}";
+
+    UTEST_SETUP;
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+
+    return 0;
+}
+
+#define CHECK_PARSE_LYD(INPUT, PARSE_OPTION, VALIDATE_OPTION, TREE) \
+    CHECK_PARSE_LYD_PARAM(INPUT, LYD_JSON, PARSE_OPTION, VALIDATE_OPTION, LY_SUCCESS, TREE)
+
+#define PARSER_CHECK_ERROR(INPUT, PARSE_OPTION, VALIDATE_OPTION, MODEL, RET_VAL, ERR_MESSAGE, ERR_PATH) \
+    assert_int_equal(RET_VAL, lyd_parse_data_mem(UTEST_LYCTX, INPUT, LYD_JSON, PARSE_OPTION, VALIDATE_OPTION, &MODEL));\
+    CHECK_LOG_CTX(ERR_MESSAGE, ERR_PATH);\
+    assert_null(MODEL)
+
+#define CHECK_LYD_STRING(IN_MODEL, PRINT_OPTION, TEXT) \
+    CHECK_LYD_STRING_PARAM(IN_MODEL, TEXT, LYD_JSON, PRINT_OPTION)
+
+static void
+test_leaf(void **state)
+{
+    struct lyd_node *tree;
+    struct lyd_node_term *leaf;
+    const char *data;
+
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "ietf-netconf-with-defaults", "2011-06-01", NULL));
+
+    data = "{\"a:foo\":\"foo value\"}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "foo", 1, LYS_LEAF, 0, 0, NULL, 0);
+    leaf = (struct lyd_node_term *)tree;
+    CHECK_LYD_VALUE(leaf->value, STRING, "foo value");
+
+    CHECK_LYSC_NODE(tree->next->next->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_SET_DFLT, 1, "foo2",
+            1, LYS_LEAF, 0, 0, NULL, 0);
+    leaf = (struct lyd_node_term *)tree->next->next;
+
+    CHECK_LYD_VALUE(leaf->value, STRING, "default-val");
+    assert_true(leaf->flags & LYD_DEFAULT);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* make foo2 explicit */
+    data = "{\"a:foo2\":\"default-val\"}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_SET_DFLT, 1, "foo2",
+            1, LYS_LEAF, 0, 0, NULL, 0);
+    leaf = (struct lyd_node_term *)tree;
+    CHECK_LYD_VALUE(leaf->value, STRING, "default-val");
+    assert_false(leaf->flags & LYD_DEFAULT);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* parse foo2 but make it implicit */
+    data = "{\"a:foo2\":\"default-val\",\"@a:foo2\":{\"ietf-netconf-with-defaults:default\":true}}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_SET_DFLT, 1, "foo2",
+            1, LYS_LEAF, 0, 0, NULL, 0);
+    leaf = (struct lyd_node_term *)tree;
+    CHECK_LYD_VALUE(leaf->value, STRING, "default-val");
+    assert_true(leaf->flags & LYD_DEFAULT);
+
+    /* print default values */
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS | LYD_PRINT_WD_ALL_TAG, data);
+    lyd_free_all(tree);
+
+    /* skip leaf */
+    data = "{\"a:cp\":{\"x\":\"val\",\"y\":\"valy\",\"z\":5}}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, "{\"a:cp\":{\"y\":\"valy\",\"z\":5}}");
+    lyd_free_all(tree);
+
+    /* multiple meatadata hint and unknown metadata xxx supposed to be skipped since it is from missing schema */
+    data = "{\"@a:foo\":{\"a:hint\":1,\"a:hint\":2,\"x:xxx\":{\"value\":\"/x:no/x:yes\"}},\"a:foo\":\"xxx\"}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "foo", 1, LYS_LEAF, 0, 0, NULL, 0);
+    CHECK_LYD_META(tree->meta, 1, "hint", 1, 1,  INT8, "1", 1);
+    CHECK_LYD_META(tree->meta->next, 1, "hint", 0, 1,  INT8, "2", 2);
+    assert_null(tree->meta->next->next);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS,
+            "{\"a:foo\":\"xxx\",\"@a:foo\":{\"a:hint\":1,\"a:hint\":2}}");
+    lyd_free_all(tree);
+
+    PARSER_CHECK_ERROR(data, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Unknown (or not implemented) YANG module \"x\" of metadata \"x:xxx\".", "Data location \"/@a:foo\", line number 1.");
+
+    /* missing referenced metadata node */
+    PARSER_CHECK_ERROR("{\"@a:foo\" : { \"a:hint\" : 1 }}", 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Missing JSON data instance to be coupled with @a:foo metadata.", "Data location \"/@a:foo\", line number 1.");
+
+    /* missing namespace for meatadata*/
+    PARSER_CHECK_ERROR("{\"a:foo\" : \"value\", \"@a:foo\" : { \"hint\" : 1 }}", 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Metadata in JSON must be namespace-qualified, missing prefix for \"hint\".",
+            "Schema location \"/a:foo\", line number 1.");
+
+    /* invalid JSON type */
+    data = "{\"a:l1\" : [{ \"a\" : \"val-a\", \"b\" : \"val-b\", \"c\" : 1, \"cont\" : { \"e\" : \"0\" } }]}";
+    PARSER_CHECK_ERROR(data, 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Invalid non-boolean-encoded boolean value \"0\".",
+            "Data location \"/a:l1[a='val-a'][b='val-b'][c='1']/cont/e\", line number 1.");
+
+    /* reverse solidus in JSON object member name */
+    data = "{\"@a:foo\":{\"a:hi\\nt\":1},\"a:foo\":\"xxx\"}";
+    assert_int_equal(LY_EINVAL, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, &tree));
+}
+
+static void
+test_leaflist(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+    struct lyd_node_term *ll;
+
+    data = "{\"a:ll1\":[10,11]}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "ll1",
+            1, LYS_LEAFLIST, 0, 0, NULL, 0);
+    ll = (struct lyd_node_term *)tree;
+    CHECK_LYD_VALUE(ll->value, UINT8, "10", 10);
+
+    assert_non_null(tree->next);
+    CHECK_LYSC_NODE(tree->next->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "ll1",
+            1, LYS_LEAFLIST, 0, 0, NULL, 0);
+    ll = (struct lyd_node_term *)tree->next;
+    CHECK_LYD_VALUE(ll->value, UINT8, "11", 11);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* accept empty */
+    data = "{\"a:ll1\":[]}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_null(tree);
+
+    /* simple metadata */
+    data = "{\"a:ll1\":[10,11],\"@a:ll1\":[null,{\"a:hint\":2}]}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "ll1",
+            1, LYS_LEAFLIST, 0, 0, NULL, 0);
+    ll = (struct lyd_node_term *)tree;
+    CHECK_LYD_VALUE(ll->value, UINT8, "10", 10);
+    assert_null(ll->meta);
+
+    assert_non_null(tree->next);
+    CHECK_LYSC_NODE(tree->next->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "ll1",
+            1, LYS_LEAFLIST, 0, 0, NULL, 0);
+    ll = (struct lyd_node_term *)tree->next;
+    CHECK_LYD_VALUE(ll->value, UINT8, "11", 11);
+    CHECK_LYD_META(ll->meta, 1, "hint", 0, 1,  INT8, "2", 2);
+    assert_null(ll->meta->next);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* multiple meatadata hint and unknown metadata xxx supposed to be skipped since it is from missing schema */
+    data = "{\"@a:ll1\" : [{\"a:hint\" : 1, \"x:xxx\" :  { \"value\" : \"/x:no/x:yes\" }, "
+            "\"a:hint\" : 10},null,{\"a:hint\" : 3}], \"a:ll1\" : [1,2,3]}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "ll1",
+            1, LYS_LEAFLIST, 0, 0, NULL, 0);
+    ll = (struct lyd_node_term *)tree;
+    CHECK_LYD_VALUE(ll->value, UINT8, "1", 1);
+    CHECK_LYD_META(ll->meta, 1, "hint", 1, 1,  INT8, "1", 1);
+    CHECK_LYD_META(ll->meta->next, 1, "hint", 0, 1,  INT8, "10", 10);
+
+    assert_non_null(tree->next);
+    CHECK_LYSC_NODE(tree->next->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "ll1",
+            1, LYS_LEAFLIST, 0, 0, NULL, 0);
+    ll = (struct lyd_node_term *)tree->next;
+    CHECK_LYD_VALUE(ll->value, UINT8, "2", 2);
+    assert_null(ll->meta);
+
+    assert_non_null(tree->next->next);
+    CHECK_LYSC_NODE(tree->next->next->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "ll1",
+            1, LYS_LEAFLIST, 0, 0, NULL, 0);
+    ll = (struct lyd_node_term *)tree->next->next;
+    CHECK_LYD_VALUE(ll->value, UINT8, "3", 3);
+    CHECK_LYD_META(ll->meta, 1, "hint", 0, 1,  INT8, "3", 3);
+    assert_null(ll->meta->next);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS,
+            "{\"a:ll1\":[1,2,3],\"@a:ll1\":[{\"a:hint\":1,\"a:hint\":10},null,{\"a:hint\":3}]}");
+    lyd_free_all(tree);
+
+    /* missing referenced metadata node */
+    PARSER_CHECK_ERROR("{\"@a:ll1\":[{\"a:hint\":1}]}", 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Missing JSON data instance to be coupled with @a:ll1 metadata.", "Data location \"/@a:ll1\", line number 1.");
+
+    PARSER_CHECK_ERROR("{\"a:ll1\":[1],\"@a:ll1\":[{\"a:hint\":1},{\"a:hint\":2}]}", 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Missing JSON data instance #2 of a:ll1 to be coupled with metadata.", "Schema location \"/a:ll1\", line number 1.");
+
+    PARSER_CHECK_ERROR("{\"@a:ll1\":[{\"a:hint\":1},{\"a:hint\":2},{\"a:hint\":3}],\"a:ll1\" : [1, 2]}", 0, LYD_VALIDATE_PRESENT,
+            tree, LY_EVALID, "Missing JSON data instance #3 to be coupled with @a:ll1 metadata.",
+            "Data location \"/@a:ll1\", line number 1.");
+}
+
+static void
+test_anydata(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+
+    data = "{\"a:any\":{\"x:element1\":{\"element2\":\"/a:some/a:path\",\"list\":[{},{\"key\":\"a\"}]}}}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_STATUS_CURR | LYS_CONFIG_R | LYS_SET_CONFIG, 1, "any",
+            1, LYS_ANYDATA, 0, 0, NULL, 0);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "{\"a:any\":{}}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_STATUS_CURR | LYS_CONFIG_R | LYS_SET_CONFIG, 1, "any",
+            1, LYS_ANYDATA, 0, 0, NULL, 0);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "{\"a:any\":{\"node\":20}}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_STATUS_CURR | LYS_CONFIG_R | LYS_SET_CONFIG, 1, "any",
+            1, LYS_ANYDATA, 0, 0, NULL, 0);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+}
+
+static void
+test_anyxml(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+
+    data = "{\"a:axml\":\"some-value in string\"}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_STATUS_CURR | LYS_CONFIG_W, 1, "axml", 1, LYS_ANYXML, 0, 0, NULL, 0);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "{\"a:axml\":\"\"}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_STATUS_CURR | LYS_CONFIG_W, 1, "axml", 1, LYS_ANYXML, 0, 0, NULL, 0);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "{\"a:axml\":55}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_STATUS_CURR | LYS_CONFIG_W, 1, "axml", 1, LYS_ANYXML, 0, 0, NULL, 0);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "{\"a:axml\":false}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_STATUS_CURR | LYS_CONFIG_W, 1, "axml", 1, LYS_ANYXML, 0, 0, NULL, 0);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "{\"a:axml\":null}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_STATUS_CURR | LYS_CONFIG_W, 1, "axml", 1, LYS_ANYXML, 0, 0, NULL, 0);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "{\"a:axml\":[null,true,false]}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_STATUS_CURR | LYS_CONFIG_W, 1, "axml", 1, LYS_ANYXML, 0, 0, NULL, 0);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "{\"a:axml\":[null,true,{\"name\":[25,40, false]}]}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_STATUS_CURR | LYS_CONFIG_W, 1, "axml", 1, LYS_ANYXML, 0, 0, NULL, 0);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* same as anydata tests */
+    data = "{\"a:axml\":{\"x:element1\":{\"element2\":\"/a:some/a:path\",\"list\":[{},{\"key\":\"a\"}]}}}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_STATUS_CURR | LYS_CONFIG_W, 1, "axml", 1, LYS_ANYXML, 0, 0, NULL, 0);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "{\"a:axml\":{}}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_STATUS_CURR | LYS_CONFIG_W, 1, "axml", 1, LYS_ANYXML, 0, 0, NULL, 0);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+}
+
+static void
+test_list(void **state)
+{
+    const char *data;
+    struct lyd_node *tree, *iter;
+    struct lyd_node_inner *list;
+    struct lyd_node_term *leaf;
+
+    /* check hashes */
+    data = "{\"a:l1\":[{\"a\":\"one\",\"b\":\"one\",\"c\":1}]}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "l1",
+            1, LYS_LIST, 0, 0, NULL, 0);
+    list = (struct lyd_node_inner *)tree;
+    LY_LIST_FOR(list->child, iter) {
+        assert_int_not_equal(0, iter->hash);
+    }
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* accept empty */
+    data = "{\"a:l1\":[]}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_null(tree);
+
+    /* missing keys */
+    PARSER_CHECK_ERROR("{ \"a:l1\": [ {\"c\" : 1, \"b\" : \"b\"}]}", 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "List instance is missing its key \"a\".",
+            "Data location \"/a:l1[b='b'][c='1']\", line number 1.");
+
+    PARSER_CHECK_ERROR("{ \"a:l1\": [ {\"a\" : \"a\"}]}", 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "List instance is missing its key \"b\".", "Data location \"/a:l1[a='a']\", line number 1.");
+
+    PARSER_CHECK_ERROR("{ \"a:l1\": [ {\"b\" : \"b\", \"a\" : \"a\"}]}", 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "List instance is missing its key \"c\".", "Data location \"/a:l1[a='a'][b='b']\", line number 1.");
+
+    /* key duplicate */
+    PARSER_CHECK_ERROR("{ \"a:l1\": [ {\"c\" : 1, \"b\" : \"b\", \"a\" : \"a\", \"c\" : 1}]}", 0, LYD_VALIDATE_PRESENT,
+            tree, LY_EVALID, "Duplicate instance of \"c\".",
+            "Data location \"/a:l1[a='a'][b='b'][c='1'][c='1']/c\", line number 1.");
+
+    /* keys order, in contrast to XML, JSON accepts keys in any order even in strict mode */
+    CHECK_PARSE_LYD("{ \"a:l1\": [ {\"d\" : \"d\", \"a\" : \"a\", \"c\" : 1, \"b\" : \"b\"}]}", 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "l1",
+            1, LYS_LIST, 0, 0, NULL, 0);
+    list = (struct lyd_node_inner *)tree;
+    assert_non_null(leaf = (struct lyd_node_term *)list->child);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "a", 1, LYS_LEAF, 1, 0, NULL, 0);
+    assert_non_null(leaf = (struct lyd_node_term *)leaf->next);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "b", 1, LYS_LEAF, 1, 0, NULL, 0);
+    assert_non_null(leaf = (struct lyd_node_term *)leaf->next);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "c", 1, LYS_LEAF, 1, 0, NULL, 0);
+    assert_non_null(leaf = (struct lyd_node_term *)leaf->next);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "d", 1, LYS_LEAF, 1, 0, NULL, 0);
+    CHECK_LOG_CTX(NULL, NULL);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS,
+            "{\"a:l1\":[{\"a\":\"a\",\"b\":\"b\",\"c\":1,\"d\":\"d\"}]}");
+    lyd_free_all(tree);
+
+    /*  */
+    CHECK_PARSE_LYD("{\"a:l1\":[{\"c\":1,\"b\":\"b\",\"a\":\"a\"}]}", LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "l1",
+            1, LYS_LIST, 0, 0, NULL, 0);
+    list = (struct lyd_node_inner *)tree;
+    assert_non_null(leaf = (struct lyd_node_term *)list->child);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "a",
+            1, LYS_LEAF, 1, 0, NULL, 0);
+    assert_non_null(leaf = (struct lyd_node_term *)leaf->next);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "b",
+            1, LYS_LEAF, 1, 0, NULL, 0);
+    assert_non_null(leaf = (struct lyd_node_term *)leaf->next);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "c",
+            1, LYS_LEAF, 1, 0, NULL, 0);
+    CHECK_LOG_CTX(NULL, NULL);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS,
+            "{\"a:l1\":[{\"a\":\"a\",\"b\":\"b\",\"c\":1}]}");
+    lyd_free_all(tree);
+
+    data = "{\"a:cp\":{\"@\":{\"a:hint\":1}}}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_PRESENCE, 1, "cp",
+            1, LYS_CONTAINER, 0, 0, NULL, 0);
+    CHECK_LYD_META(tree->meta, 1, "hint", 0, 1,  INT8, "1", 1);
+    assert_null(tree->meta->next);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+}
+
+static void
+test_container(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+    struct lyd_node_inner *cont;
+
+    CHECK_PARSE_LYD("{\"a:c\":{}}", 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "c",
+            1, LYS_CONTAINER, 0, 0, NULL, 0);
+    cont = (struct lyd_node_inner *)tree;
+    assert_true(cont->flags & LYD_DEFAULT);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, "{}");
+    lyd_free_all(tree);
+
+    data = "{\"a:cp\":{}}";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_PRESENCE, 1, "cp",
+            1, LYS_CONTAINER, 0, 0, NULL, 0);
+    cont = (struct lyd_node_inner *)tree;
+    assert_false(cont->flags & LYD_DEFAULT);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* skip container */
+    CHECK_PARSE_LYD("{\"a:unknown\":{\"a\":\"val\",\"b\":5}}", 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, "{}");
+    lyd_free_all(tree);
+}
+
+static void
+test_opaq(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+
+    /* invalid value, no flags */
+    data = "{\"a:foo3\":[null]}";
+    PARSER_CHECK_ERROR(data, 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Invalid non-number-encoded uint32 value \"\".", "Schema location \"/a:foo3\", line number 1.");
+
+    /* opaq flag */
+    CHECK_PARSE_LYD(data, LYD_PARSE_OPAQ | LYD_PARSE_ONLY, 0, tree);
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 0, 0, LY_VALUE_JSON, "foo3", 0, 0, NULL,  0,  "");
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* missing key, no flags */
+    data = "{\"a:l1\":[{\"a\":\"val_a\",\"b\":\"val_b\",\"d\":\"val_d\"}]}";
+    PARSER_CHECK_ERROR(data, 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "List instance is missing its key \"c\".",
+            "Data location \"/a:l1[a='val_a'][b='val_b']\", line number 1.");
+
+    /* opaq flag */
+    CHECK_PARSE_LYD(data, LYD_PARSE_OPAQ | LYD_PARSE_ONLY, 0, tree);
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 0, 0x1, LY_VALUE_JSON, "l1", 0, 0, NULL,  0,  "");
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* invalid key, no flags */
+    data = "{\"a:l1\":[{\"a\":\"val_a\",\"b\":\"val_b\",\"c\":\"val_c\"}]}";
+    PARSER_CHECK_ERROR(data, 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Invalid non-number-encoded int16 value \"val_c\".",
+            "Data location \"/a:l1[a='val_a'][b='val_b']/c\", line number 1.");
+
+    /* opaq flag */
+    CHECK_PARSE_LYD(data, LYD_PARSE_OPAQ | LYD_PARSE_ONLY, 0, tree);
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 0, 0x1, LY_VALUE_JSON, "l1", 0, 0, NULL,  0,  "");
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "{\"a:l1\":[{\"a\":\"val_a\",\"b\":\"val_b\",\"c\":{\"val\":\"val_c\"}}]}";
+    CHECK_PARSE_LYD(data, LYD_PARSE_OPAQ | LYD_PARSE_ONLY, 0, tree);
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 0, 0x1, LY_VALUE_JSON, "l1", 0, 0, NULL,  0,  "");
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "{\"a:l1\":[{\"a\":\"val_a\",\"b\":\"val_b\"}]}";
+    CHECK_PARSE_LYD(data, LYD_PARSE_OPAQ | LYD_PARSE_ONLY, 0, tree);
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 0, 0x1, LY_VALUE_JSON, "l1", 0, 0, NULL,  0,  "");
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* invalid metadata */
+    data = "{\"@a:foo\":\"str\",\"@a:foo3\":1,\"a:foo3\":2}";
+    PARSER_CHECK_ERROR(data, 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Unknown module of node \"@a:foo\".", "Data location \"/@a:foo\".");
+
+    /* empty name */
+    PARSER_CHECK_ERROR("{\"@a:foo\":{\"\":0}}", 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "A JSON object member name cannot be a zero-length string.", "Line number 1.");
+
+    /* opaque data tree format print */
+    data =
+            "{\n"
+            "  \"ietf-netconf-nmda:get-data\": {\n"
+            "    \"data\": {\n"
+            "      \"ietf-keystore:keystore\": {\n"
+            "        \"asymmetric-keys\": {\n"
+            "          \"asymmetric-key\": [\n"
+            "            {\n"
+            "              \"name\": \"genkey\",\n"
+            "              \"algorithm\": \"rsa2048\"\n"
+            "            }\n"
+            "          ]\n"
+            "        }\n"
+            "      },\n"
+            "      \"ietf-netconf-server:netconf-server\": {\n"
+            "        \"listen\": {\n"
+            "          \"idle-timeout\": 3600,\n"
+            "          \"endpoint\": [\n"
+            "            {\n"
+            "              \"name\": \"default-ssh\",\n"
+            "              \"ssh\": {\n"
+            "                \"tcp-server-parameters\": {\n"
+            "                  \"local-address\": \"0.0.0.0\",\n"
+            "                  \"local-port\": 830\n"
+            "                },\n"
+            "                \"ssh-server-parameters\": {\n"
+            "                  \"server-identity\": {\n"
+            "                    \"host-key\": [\n"
+            "                      {\n"
+            "                        \"name\": \"default-key\",\n"
+            "                        \"public-key\": {\n"
+            "                          \"keystore-reference\": \"genkey\"\n"
+            "                        }\n"
+            "                      }\n"
+            "                    ]\n"
+            "                  },\n"
+            "                  \"client-authentication\": {\n"
+            "                    \"supported-authentication-methods\": {\n"
+            "                      \"publickey\": [null],\n"
+            "                      \"passsword\": [null],\n"
+            "                      \"other\": [\n"
+            "                        \"interactive\",\n"
+            "                        \"gssapi\"\n"
+            "                      ]\n"
+            "                    }\n"
+            "                  }\n"
+            "                }\n"
+            "              }\n"
+            "            }\n"
+            "          ]\n"
+            "        }\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+    CHECK_PARSE_LYD(data, LYD_PARSE_OPAQ | LYD_PARSE_ONLY, 0, tree);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+}
+
+static void
+test_rpc(void **state)
+{
+    const char *data;
+    struct ly_in *in;
+    struct lyd_node *tree, *op;
+    const struct lyd_node *node;
+    const char *dsc = "Edit data in an NMDA datastore.\n"
+            "\n"
+            "If an error condition occurs such that an error severity\n"
+            "<rpc-error> element is generated, the server will stop\n"
+            "processing the <edit-data> operation and restore the\n"
+            "specified configuration to its complete state at\n"
+            "the start of this <edit-data> operation.";
+
+    assert_non_null((ly_ctx_load_module(UTEST_LYCTX, "ietf-netconf-nmda", "2019-01-07", NULL)));
+
+    data = "{\"ietf-netconf-nmda:edit-data\":{"
+            "\"datastore\":\"ietf-datastores:running\","
+            "\"config\":{\"a:cp\":{\"z\":[null],\"@z\":{\"ietf-netconf:operation\":\"replace\"}},"
+            "\"a:l1\":[{\"@\":{\"ietf-netconf:operation\":\"replace\"},\"a\":\"val_a\",\"b\":\"val_b\",\"c\":\"val_c\"}]}"
+            "}}";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_JSON, LYD_TYPE_RPC_YANG, &tree, &op));
+    ly_in_free(in, 0);
+
+    assert_non_null(op);
+
+    CHECK_LYSC_ACTION((struct lysc_node_action *)op->schema, dsc, 0, LYS_STATUS_CURR,
+            1, 0, 0, 1, "edit-data", LYS_RPC,
+            0, 0, 0, 0, 0, NULL, 0);
+
+    node = tree;
+    CHECK_LYSC_ACTION((struct lysc_node_action *)node->schema, dsc, 0, LYS_STATUS_CURR,
+            1, 0, 0, 1, "edit-data", LYS_RPC,
+            0, 0, 0, 0, 0, NULL, 0);
+    node = lyd_child(node)->next;
+    CHECK_LYSC_NODE(node->schema, "Inline config content.", 0, LYS_STATUS_CURR | LYS_IS_INPUT, 1, "config",
+            0, LYS_ANYDATA, 1, 0, NULL, 0);
+
+    node = ((struct lyd_node_any *)node)->value.tree;
+    CHECK_LYSC_NODE(node->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_PRESENCE, 1, "cp",
+            1, LYS_CONTAINER, 0, 0, NULL, 0);
+    node = lyd_child(node);
+    /* z has no value */
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)node, 0x1, 0, LY_VALUE_JSON, "z", 0, 0, NULL,  0,  "");
+    node = node->parent->next;
+    /* l1 key c has invalid value so it is at the end */
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)node, 0x1, 0x1, LY_VALUE_JSON, "l1", 0, 0, NULL,  0,  "");
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* wrong namespace, element name, whatever... */
+    /* TODO */
+}
+
+static void
+test_action(void **state)
+{
+    const char *data;
+    struct ly_in *in;
+    struct lyd_node *tree, *op;
+
+    data = "{\"a:c\":{\"act\":{\"al\":\"value\"}}}";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_JSON, LYD_TYPE_RPC_YANG, &tree, &op));
+    ly_in_free(in, 0);
+
+    assert_non_null(op);
+    CHECK_LYSC_ACTION((struct lysc_node_action *)op->schema, NULL, 0, LYS_STATUS_CURR,
+            1, 0, 0, 1, "act", LYS_ACTION,
+            1, 0, 0, 1, 0, NULL, 0);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* wrong namespace, element name, whatever... */
+    /* TODO */
+}
+
+static void
+test_notification(void **state)
+{
+    const char *data;
+    struct ly_in *in;
+    struct lyd_node *tree, *ntf;
+
+    data = "{\"a:c\":{\"n1\":{\"nl\":\"value\"}}}";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_JSON, LYD_TYPE_NOTIF_YANG, &tree, &ntf));
+    ly_in_free(in, 0);
+
+    assert_non_null(ntf);
+    CHECK_LYSC_NOTIF((struct lysc_node_notif *)ntf->schema, 1, NULL, 0, 0x4, 1, 0, "n1", 1, 0, NULL, 0);
+
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "c", 1, LYS_CONTAINER, 0, 0, NULL, 0);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "{\"a:n2\":{}}";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_JSON, LYD_TYPE_NOTIF_YANG, &tree, &ntf));
+    ly_in_free(in, 0);
+
+    assert_non_null(ntf);
+    CHECK_LYSC_NOTIF((struct lysc_node_notif *)ntf->schema, 0, NULL, 0, 0x4, 1, 0, "n2", 0, 0, NULL, 0);
+
+    assert_non_null(tree);
+    assert_ptr_equal(ntf, tree);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* wrong namespace, element name, whatever... */
+    /* TODO */
+}
+
+static void
+test_reply(void **state)
+{
+    const char *data;
+    struct ly_in *in;
+    struct lyd_node *tree, *op;
+    const struct lyd_node *node;
+
+    data = "{\"a:c\":{\"act\":{\"al\":25}}}";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_JSON, LYD_TYPE_REPLY_YANG, &tree, &op));
+    ly_in_free(in, 0);
+
+    assert_non_null(op);
+    CHECK_LYSC_ACTION((struct lysc_node_action *)op->schema, NULL, 0, LYS_STATUS_CURR,
+            1, 0, 0, 1, "act", LYS_ACTION,
+            1, 0, 0, 1, 0, NULL, 0);
+    node = lyd_child(op);
+    CHECK_LYSC_NODE(node->schema, NULL, 0, LYS_STATUS_CURR | LYS_IS_OUTPUT, 1, "al", 0, LYS_LEAF, 1, 0, NULL, 0);
+
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "c", 1, LYS_CONTAINER, 0, 0, NULL, 0);
+
+    /* TODO print only rpc-reply node and then output subtree */
+    CHECK_LYD_STRING(lyd_child(op), LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, "{\"a:al\":25}");
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, "{\"a:c\":{\"act\":{\"al\":25}}}");
+    lyd_free_all(tree);
+
+    /* wrong namespace, element name, whatever... */
+    /* TODO */
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_leaf, setup),
+        UTEST(test_leaflist, setup),
+        UTEST(test_anydata, setup),
+        UTEST(test_anyxml, setup),
+        UTEST(test_list, setup),
+        UTEST(test_container, setup),
+        UTEST(test_opaq, setup),
+        UTEST(test_rpc, setup),
+        UTEST(test_action, setup),
+        UTEST(test_notification, setup),
+        UTEST(test_reply, setup),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/data/test_parser_xml.c b/tests/utests/data/test_parser_xml.c
new file mode 100644
index 0000000..7defd9c
--- /dev/null
+++ b/tests/utests/data/test_parser_xml.c
@@ -0,0 +1,836 @@
+/**
+ * @file test_parser_xml.c
+ * @author Radek Krejci <rkrejci@cesnet.cz>
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief unit tests for functions from parser_xml.c
+ *
+ * Copyright (c) 2019 - 2022 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "context.h"
+#include "in.h"
+#include "out.h"
+#include "parser_data.h"
+#include "printer_data.h"
+#include "tree_data_internal.h"
+#include "tree_schema.h"
+
+static int
+setup(void **state)
+{
+    const char *schema =
+            "module a {\n"
+            "    namespace urn:tests:a;\n"
+            "    prefix a;\n"
+            "    yang-version 1.1;\n"
+            "    list l1 { key \"a b c\"; leaf a {type string;} leaf b {type string;} leaf c {type int16;}"
+            "        leaf d {type string;}"
+            "        container cont {leaf e {type boolean;}}"
+            "    }"
+            "    leaf foo { type string;}\n"
+            "    container c {\n"
+            "        leaf x {type string;}\n"
+            "        action act { input { leaf al {type string;} } output { leaf al {type uint8;} } }\n"
+            "        notification n1 { leaf nl {type string;}}}\n"
+            "    container cp {presence \"container switch\"; leaf y {type string;} leaf z {type int8;}}\n"
+            "    anydata any {config false;}\n"
+            "    leaf foo2 { type string; default \"default-val\"; }\n"
+            "    leaf foo3 { type uint32; }\n"
+            "    notification n2;}";
+
+    UTEST_SETUP;
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+
+    return 0;
+}
+
+#define CHECK_PARSE_LYD(INPUT, PARSE_OPTION, VALIDATE_OPTION, TREE) \
+    CHECK_PARSE_LYD_PARAM(INPUT, LYD_XML, PARSE_OPTION, VALIDATE_OPTION, LY_SUCCESS, TREE)
+
+#define PARSER_CHECK_ERROR(INPUT, PARSE_OPTION, VALIDATE_OPTION, MODEL, RET_VAL, ERR_MESSAGE, ERR_PATH) \
+    assert_int_equal(RET_VAL, lyd_parse_data_mem(UTEST_LYCTX, INPUT, LYD_XML, PARSE_OPTION, VALIDATE_OPTION, &MODEL));\
+    CHECK_LOG_CTX(ERR_MESSAGE, ERR_PATH);\
+    assert_null(MODEL)
+
+#define CHECK_LYD_STRING(IN_MODEL, PRINT_OPTION, TEXT) \
+    CHECK_LYD_STRING_PARAM(IN_MODEL, TEXT, LYD_XML, PRINT_OPTION)
+
+static void
+test_leaf(void **state)
+{
+    const char *data = "<foo xmlns=\"urn:tests:a\">foo value</foo>";
+    struct lyd_node *tree;
+    struct lyd_node_term *leaf;
+
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "ietf-netconf-with-defaults", "2011-06-01", NULL));
+
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "foo", 1, LYS_LEAF, 0, 0, NULL, 0);
+    leaf = (struct lyd_node_term *)tree;
+    CHECK_LYD_VALUE(leaf->value, STRING, "foo value");
+
+    CHECK_LYSC_NODE(tree->next->next->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_SET_DFLT, 1, "foo2",
+            1, LYS_LEAF, 0, 0, NULL, 0);
+    leaf = (struct lyd_node_term *)tree->next->next;
+    CHECK_LYD_VALUE(leaf->value, STRING, "default-val");
+    assert_true(leaf->flags & LYD_DEFAULT);
+    lyd_free_all(tree);
+
+    /* make foo2 explicit */
+    data = "<foo2 xmlns=\"urn:tests:a\">default-val</foo2>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_SET_DFLT, 1, "foo2",
+            1, LYS_LEAF, 0, 0, NULL, 0);
+    leaf = (struct lyd_node_term *)tree;
+    CHECK_LYD_VALUE(leaf->value, STRING, "default-val");
+    assert_false(leaf->flags & LYD_DEFAULT);
+    lyd_free_all(tree);
+
+    /* parse foo2 but make it implicit, skip metadata xxx from missing schema */
+    data = "<foo2 xmlns=\"urn:tests:a\" xmlns:wd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" "
+            "wd:default=\"true\" xmlns:x=\"urn:x\" x:xxx=\"false\">default-val</foo2>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_SET_DFLT, 1, "foo2",
+            1, LYS_LEAF, 0, 0, NULL, 0);
+    leaf = (struct lyd_node_term *)tree;
+    CHECK_LYD_VALUE(leaf->value, STRING, "default-val");
+    assert_true(leaf->flags & LYD_DEFAULT);
+    lyd_free_all(tree);
+
+    /* invalid value */
+    data = "<l1 xmlns=\"urn:tests:a\"><a>val-a</a><b>val-b</b><c>1</c><cont><e>0</e></cont></l1>";
+    PARSER_CHECK_ERROR(data, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Invalid boolean value \"0\".",
+            "Data location \"/a:l1[a='val-a'][b='val-b'][c='1']/cont/e\", line number 1.");
+}
+
+static void
+test_anydata(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+
+    data = "<any xmlns=\"urn:tests:a\">\n"
+            "  <element1>\n"
+            "    <x:element2 x:attr2=\"test\" xmlns:a=\"urn:tests:a\" xmlns:x=\"urn:x\">a:data</x:element2>\n"
+            "  </element1>\n"
+            "  <element1a/>\n"
+            "</any>\n";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_R | LYS_STATUS_CURR | LYS_SET_CONFIG, 1, "any",
+            1, LYS_ANYDATA, 0, 0, NULL, 0);
+
+    const char *data_expected =
+            "<any xmlns=\"urn:tests:a\">\n"
+            "  <element1>\n"
+            "    <element2 xmlns=\"urn:x\" xmlns:x=\"urn:x\" x:attr2=\"test\" xmlns:a=\"urn:tests:a\">a:data</element2>\n"
+            "  </element1>\n"
+            "  <element1a/>\n"
+            "</any>\n";
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data_expected);
+    lyd_free_all(tree);
+}
+
+static void
+test_list(void **state)
+{
+    const char *data;
+    struct lyd_node *tree, *iter;
+    struct lyd_node_inner *list;
+    struct lyd_node_term *leaf;
+
+    /* check hashes */
+    data = "<l1 xmlns=\"urn:tests:a\"><a>one</a><b>one</b><c>1</c></l1>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "l1",
+            1, LYS_LIST, 0, 0, NULL, 0);
+    list = (struct lyd_node_inner *)tree;
+    LY_LIST_FOR(list->child, iter) {
+        assert_int_not_equal(0, iter->hash);
+    }
+    lyd_free_all(tree);
+
+    /* missing keys */
+    PARSER_CHECK_ERROR("<l1 xmlns=\"urn:tests:a\"><c>1</c><b>b</b></l1>", 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "List instance is missing its key \"a\".", "Data location \"/a:l1[b='b'][c='1']\", line number 1.");
+
+    PARSER_CHECK_ERROR("<l1 xmlns=\"urn:tests:a\"><a>a</a></l1>", 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "List instance is missing its key \"b\".", "Data location \"/a:l1[a='a']\", line number 1.");
+
+    PARSER_CHECK_ERROR("<l1 xmlns=\"urn:tests:a\"><b>b</b><a>a</a></l1>", 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "List instance is missing its key \"c\".", "Data location \"/a:l1[a='a'][b='b']\", line number 1.");
+
+    /* key duplicate */
+    PARSER_CHECK_ERROR("<l1 xmlns=\"urn:tests:a\"><c>1</c><b>b</b><a>a</a><c>1</c></l1>", 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Duplicate instance of \"c\".",
+            "Data location \"/a:l1[a='a'][b='b'][c='1'][c='1']/c\", line number 1.");
+
+    /* keys order */
+    CHECK_PARSE_LYD("<l1 xmlns=\"urn:tests:a\"><d>d</d><a>a</a><c>1</c><b>b</b></l1>", 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "l1",
+            1, LYS_LIST, 0, 0, NULL, 0);
+    list = (struct lyd_node_inner *)tree;
+    assert_non_null(leaf = (struct lyd_node_term *)list->child);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "a", 1, LYS_LEAF, 1, 0, NULL, 0);
+    assert_non_null(leaf = (struct lyd_node_term *)leaf->next);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "b", 1, LYS_LEAF, 1, 0, NULL, 0);
+    assert_non_null(leaf = (struct lyd_node_term *)leaf->next);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "c", 1, LYS_LEAF, 1, 0, NULL, 0);
+    assert_non_null(leaf = (struct lyd_node_term *)leaf->next);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "d", 1, LYS_LEAF, 1, 0, NULL, 0);
+    CHECK_LOG_CTX("Invalid position of the key \"b\" in a list.", NULL);
+    lyd_free_all(tree);
+
+    data = "<l1 xmlns=\"urn:tests:a\"><c>1</c><b>b</b><a>a</a></l1>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "l1", 1, LYS_LIST, 0, 0, NULL, 0);
+    list = (struct lyd_node_inner *)tree;
+    assert_non_null(leaf = (struct lyd_node_term *)list->child);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "a", 1, LYS_LEAF, 1, 0, NULL, 0);
+    assert_non_null(leaf = (struct lyd_node_term *)leaf->next);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "b", 1, LYS_LEAF, 1, 0, NULL, 0);
+    assert_non_null(leaf = (struct lyd_node_term *)leaf->next);
+    CHECK_LYSC_NODE(leaf->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "c", 1, LYS_LEAF, 1, 0, NULL, 0);
+    CHECK_LOG_CTX("Invalid position of the key \"a\" in a list.", NULL);
+    lyd_free_all(tree);
+
+    PARSER_CHECK_ERROR(data, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Invalid position of the key \"b\" in a list.", "Data location \"/a:l1[c='1']/b\", line number 1.");
+}
+
+static void
+test_container(void **state)
+{
+    struct lyd_node *tree;
+    struct lyd_node_inner *cont;
+
+    CHECK_PARSE_LYD("<c xmlns=\"urn:tests:a\"/>", 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "c", 1, LYS_CONTAINER, 0, 0, NULL, 0);
+    cont = (struct lyd_node_inner *)tree;
+    assert_true(cont->flags & LYD_DEFAULT);
+    lyd_free_all(tree);
+
+    CHECK_PARSE_LYD("<cp xmlns=\"urn:tests:a\"/>", 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_PRESENCE, 1, "cp",
+            1, LYS_CONTAINER, 0, 0, NULL, 0);
+    cont = (struct lyd_node_inner *)tree;
+    assert_false(cont->flags & LYD_DEFAULT);
+    lyd_free_all(tree);
+}
+
+static void
+test_opaq(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+
+    /* invalid value, no flags */
+    data = "<foo3 xmlns=\"urn:tests:a\"/>";
+    PARSER_CHECK_ERROR(data, 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Invalid type uint32 empty value.", "Schema location \"/a:foo3\", line number 1.");
+
+    /* opaq flag */
+    CHECK_PARSE_LYD(data, LYD_PARSE_OPAQ | LYD_PARSE_ONLY, 0, tree);
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 0, 0, LY_VALUE_XML, "foo3", 0, 0, NULL,  0,  "");
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, "<foo3 xmlns=\"urn:tests:a\"/>\n");
+    lyd_free_all(tree);
+
+    /* list, opaq flag */
+    data = "<l1 xmlns=\"urn:tests:a\"/>";
+    CHECK_PARSE_LYD(data, LYD_PARSE_OPAQ | LYD_PARSE_ONLY, 0, tree);
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 0, 0, LY_VALUE_XML, "l1", 0, 0, NULL,  0,  "");
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, "<l1 xmlns=\"urn:tests:a\"/>\n");
+    lyd_free_all(tree);
+
+    /* missing key, no flags */
+    data = "<l1 xmlns=\"urn:tests:a\">\n"
+            "  <a>val_a</a>\n"
+            "  <b>val_b</b>\n"
+            "  <d>val_d</d>\n"
+            "</l1>\n";
+    PARSER_CHECK_ERROR(data, 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "List instance is missing its key \"c\".",
+            "Data location \"/a:l1[a='val_a'][b='val_b']\", line number 5.");
+
+    /* opaq flag */
+    CHECK_PARSE_LYD(data, LYD_PARSE_OPAQ | LYD_PARSE_ONLY, 0, tree);
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 0, 0x1, LY_VALUE_XML, "l1", 0, 0, NULL,  0,  "");
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* invalid key, no flags */
+    data = "<l1 xmlns=\"urn:tests:a\">\n"
+            "  <a>val_a</a>\n"
+            "  <b>val_b</b>\n"
+            "  <c>val_c</c>\n"
+            "</l1>\n";
+    PARSER_CHECK_ERROR(data, 0, LYD_VALIDATE_PRESENT, tree, LY_EVALID,
+            "Invalid type int16 value \"val_c\".",
+            "Data location \"/a:l1[a='val_a'][b='val_b']/c\", line number 4.");
+
+    /* opaq flag */
+    CHECK_PARSE_LYD(data, LYD_PARSE_OPAQ | LYD_PARSE_ONLY, 0, tree);
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 0, 0x1, LY_VALUE_XML, "l1", 0, 0, NULL,  0,  "");
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* opaq flag and fail */
+    assert_int_equal(LY_EVALID, lyd_parse_data_mem(UTEST_LYCTX,
+            "<a xmlns=\"ns\">\n"
+            "  <b>x</b>\n"
+            "  <c xmld:id=\"D\">1</c>\n"
+            "</a>\n",
+            LYD_XML, LYD_PARSE_OPAQ, LYD_VALIDATE_PRESENT, &tree));
+    CHECK_LOG_CTX("Unknown XML prefix \"xmld\".", "Line number 3.");
+}
+
+static void
+test_rpc(void **state)
+{
+    const char *data;
+    struct ly_in *in;
+    struct lyd_node *tree, *op;
+    const struct lyd_node *node;
+    const char *dsc = "The <edit-config> operation loads all or part of a specified\n"
+            "configuration to the specified target configuration.";
+    const char *ref = "RFC 6241, Section 7.2";
+    const char *feats[] = {"writable-running", NULL};
+
+    assert_non_null((ly_ctx_load_module(UTEST_LYCTX, "ietf-netconf", "2011-06-01", feats)));
+
+    data = "<edit-config xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\">\n"
+            "  <target>\n"
+            "    <running/>\n"
+            "  </target>\n"
+            "  <config xmlns:nc=\"urn:ietf:params:xml:ns:netconf:base:1.0\">\n"
+            "    <l1 xmlns=\"urn:tests:a\" nc:operation=\"replace\">\n"
+            "      <a>val_a</a>\n"
+            "      <b>val_b</b>\n"
+            "      <c>val_c</c>\n"
+            "    </l1>\n"
+            "    <cp xmlns=\"urn:tests:a\">\n"
+            "      <z nc:operation=\"delete\"/>\n"
+            "    </cp>\n"
+            "  </config>\n"
+            "</edit-config>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_RPC_YANG, &tree, &op));
+    ly_in_free(in, 0);
+
+    assert_non_null(op);
+
+    CHECK_LYSC_ACTION((struct lysc_node_action *)op->schema, dsc, 0, LYS_STATUS_CURR,
+            1, 0, 0, 1, "edit-config", LYS_RPC,
+            0, 0, 0, 0, 0, ref, 0);
+
+    assert_non_null(tree);
+
+    node = tree;
+    CHECK_LYSC_ACTION((struct lysc_node_action *)node->schema, dsc, 0, LYS_STATUS_CURR,
+            1, 0, 0, 1, "edit-config", LYS_RPC,
+            0, 0, 0, 0, 0, ref, 0);
+    node = lyd_child(node)->next;
+    dsc = "Inline Config content.";
+    CHECK_LYSC_NODE(node->schema, dsc, 0, LYS_STATUS_CURR | LYS_IS_INPUT, 1, "config", 0, LYS_ANYXML, 1, 0, NULL, 0);
+
+    node = ((struct lyd_node_any *)node)->value.tree;
+    CHECK_LYSC_NODE(node->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_PRESENCE, 1, "cp",
+            1, LYS_CONTAINER, 0, 0, NULL, 0);
+
+    node = lyd_child(node);
+    /* z has no value */
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)node, 0x1, 0, LY_VALUE_XML, "z", 0, 0, NULL,  0,  "");
+    node = node->parent->next;
+    /* l1 key c has invalid value so it is at the end */
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)node, 0x1, 0x1, LY_VALUE_XML, "l1", 0, 0, NULL,  0,  "");
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS,
+            "<edit-config xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\">\n"
+            "  <target>\n"
+            "    <running/>\n"
+            "  </target>\n"
+            "  <config>\n"
+            "    <cp xmlns=\"urn:tests:a\">\n"
+            "      <z xmlns:nc=\"urn:ietf:params:xml:ns:netconf:base:1.0\" nc:operation=\"delete\"/>\n"
+            "    </cp>\n"
+            "    <l1 xmlns=\"urn:tests:a\" xmlns:nc=\"urn:ietf:params:xml:ns:netconf:base:1.0\" nc:operation=\"replace\">\n"
+            "      <a>val_a</a>\n"
+            "      <b>val_b</b>\n"
+            "      <c>val_c</c>\n"
+            "    </l1>\n"
+            "  </config>\n"
+            "</edit-config>\n");
+
+    lyd_free_all(tree);
+
+    /* wrong namespace, element name, whatever... */
+    /* TODO */
+}
+
+static void
+test_action(void **state)
+{
+    const char *data;
+    struct ly_in *in;
+    struct lyd_node *tree, *op;
+
+    data = "<c xmlns=\"urn:tests:a\">\n"
+            "  <act>\n"
+            "    <al>value</al>\n"
+            "  </act>\n"
+            "</c>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_RPC_YANG, &tree, &op));
+    ly_in_free(in, 0);
+
+    assert_non_null(op);
+    CHECK_LYSC_ACTION((struct lysc_node_action *)op->schema, NULL, 0, LYS_STATUS_CURR,
+            1, 0, 0, 1, "act", LYS_ACTION,
+            1, 0, 0, 1, 0, NULL, 0);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS,
+            "<c xmlns=\"urn:tests:a\">\n"
+            "  <act>\n"
+            "    <al>value</al>\n"
+            "  </act>\n"
+            "</c>\n");
+
+    lyd_free_all(tree);
+
+    /* wrong namespace, element name, whatever... */
+    /* TODO */
+}
+
+static void
+test_notification(void **state)
+{
+    const char *data;
+    struct ly_in *in;
+    struct lyd_node *tree, *ntf;
+
+    data = "<c xmlns=\"urn:tests:a\">\n"
+            "  <n1>\n"
+            "    <nl>value</nl>\n"
+            "  </n1>\n"
+            "</c>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_NOTIF_YANG, &tree, &ntf));
+    ly_in_free(in, 0);
+
+    assert_non_null(ntf);
+    CHECK_LYSC_NOTIF((struct lysc_node_notif *)ntf->schema, 1, NULL, 0, 0x4, 1, 0, "n1", 1, 0, NULL, 0);
+
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "c", 1, LYS_CONTAINER, 0, 0, NULL, 0);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* top-level notif without envelope */
+    data = "<n2 xmlns=\"urn:tests:a\"/>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_NOTIF_YANG, &tree, &ntf));
+    ly_in_free(in, 0);
+
+    assert_non_null(ntf);
+    CHECK_LYSC_NOTIF((struct lysc_node_notif *)ntf->schema, 0, NULL, 0, 0x4, 1, 0, "n2", 0, 0, NULL, 0);
+
+    assert_non_null(tree);
+    assert_ptr_equal(ntf, tree);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* wrong namespace, element name, whatever... */
+    /* TODO */
+}
+
+static void
+test_reply(void **state)
+{
+    const char *data;
+    struct ly_in *in;
+    struct lyd_node *tree, *op;
+    const struct lyd_node *node;
+
+    data = "<c xmlns=\"urn:tests:a\">\n"
+            "  <act>\n"
+            "    <al>25</al>\n"
+            "  </act>\n"
+            "</c>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_REPLY_YANG, &tree, &op));
+    ly_in_free(in, 0);
+
+    assert_non_null(op);
+
+    CHECK_LYSC_ACTION((struct lysc_node_action *)op->schema, NULL, 0, LYS_STATUS_CURR,
+            1, 0, 0, 1, "act", LYS_ACTION,
+            1, 0, 0, 1, 0, NULL, 0);
+    node = lyd_child(op);
+    CHECK_LYSC_NODE(node->schema, NULL, 0, LYS_STATUS_CURR | LYS_IS_OUTPUT, 1, "al", 0, LYS_LEAF, 1, 0, NULL, 0);
+
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "c", 1, LYS_CONTAINER, 0, 0, NULL, 0);
+
+    /* TODO print only rpc-reply node and then output subtree */
+    CHECK_LYD_STRING(lyd_child(op), LYD_PRINT_WITHSIBLINGS, "<al xmlns=\"urn:tests:a\">25</al>\n");
+    lyd_free_all(tree);
+
+    /* wrong namespace, element name, whatever... */
+    /* TODO */
+}
+
+static void
+test_netconf_rpc(void **state)
+{
+    const char *data;
+    struct ly_in *in;
+    struct lyd_node *tree, *op;
+    const struct lyd_node *node;
+    const char *dsc = "The <edit-config> operation loads all or part of a specified\n"
+            "configuration to the specified target configuration.";
+    const char *ref = "RFC 6241, Section 7.2";
+    const char *feats[] = {"writable-running", NULL};
+
+    assert_non_null((ly_ctx_load_module(UTEST_LYCTX, "ietf-netconf", "2011-06-01", feats)));
+
+    data = "<rpc message-id=\"25\" xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\">"
+            "<edit-config>\n"
+            "  <target>\n"
+            "    <running/>\n"
+            "  </target>\n"
+            "  <config xmlns:nc=\"urn:ietf:params:xml:ns:netconf:base:1.0\">\n"
+            "    <l1 xmlns=\"urn:tests:a\" nc:operation=\"replace\">\n"
+            "      <a>val_a</a>\n"
+            "      <b>val_b</b>\n"
+            "      <c>val_c</c>\n"
+            "    </l1>\n"
+            "    <cp xmlns=\"urn:tests:a\">\n"
+            "      <z nc:operation=\"delete\"/>\n"
+            "    </cp>\n"
+            "  </config>\n"
+            "</edit-config>\n"
+            "</rpc>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_RPC_NETCONF, &tree, &op));
+    ly_in_free(in, 0);
+
+    assert_non_null(op);
+
+    node = tree;
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)node, 1, 0, LY_VALUE_XML, "rpc", 0, 0, 0, 0, "");
+
+    assert_non_null(tree);
+
+    node = op;
+    CHECK_LYSC_ACTION((struct lysc_node_action *)node->schema, dsc, 0, LYS_STATUS_CURR,
+            1, 0, 0, 1, "edit-config", LYS_RPC,
+            0, 0, 0, 0, 0, ref, 0);
+    node = lyd_child(node)->next;
+    dsc = "Inline Config content.";
+    CHECK_LYSC_NODE(node->schema, dsc, 0, LYS_STATUS_CURR | LYS_IS_INPUT, 1, "config", 0, LYS_ANYXML, 1, 0, NULL, 0);
+
+    node = ((struct lyd_node_any *)node)->value.tree;
+    CHECK_LYSC_NODE(node->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_PRESENCE, 1, "cp",
+            1, LYS_CONTAINER, 0, 0, NULL, 0);
+
+    node = lyd_child(node);
+    /* z has no value */
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)node, 0x1, 0, LY_VALUE_XML, "z", 0, 0, NULL,  0,  "");
+    node = node->parent->next;
+    /* l1 key c has invalid value so it is at the end */
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)node, 0x1, 0x1, LY_VALUE_XML, "l1", 0, 0, NULL,  0,  "");
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS,
+            "<rpc xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\" message-id=\"25\"/>\n");
+    CHECK_LYD_STRING(op, LYD_PRINT_WITHSIBLINGS,
+            "<edit-config xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\">\n"
+            "  <target>\n"
+            "    <running/>\n"
+            "  </target>\n"
+            "  <config>\n"
+            "    <cp xmlns=\"urn:tests:a\">\n"
+            "      <z xmlns:nc=\"urn:ietf:params:xml:ns:netconf:base:1.0\" nc:operation=\"delete\"/>\n"
+            "    </cp>\n"
+            "    <l1 xmlns=\"urn:tests:a\" xmlns:nc=\"urn:ietf:params:xml:ns:netconf:base:1.0\" nc:operation=\"replace\">\n"
+            "      <a>val_a</a>\n"
+            "      <b>val_b</b>\n"
+            "      <c>val_c</c>\n"
+            "    </l1>\n"
+            "  </config>\n"
+            "</edit-config>\n");
+
+    lyd_free_all(tree);
+    lyd_free_all(op);
+
+    /* wrong namespace, element name, whatever... */
+    /* TODO */
+}
+
+static void
+test_netconf_action(void **state)
+{
+    const char *data;
+    struct ly_in *in;
+    struct lyd_node *tree, *op;
+
+    data = "<rpc message-id=\"25\" xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\">"
+            "<action xmlns=\"urn:ietf:params:xml:ns:yang:1\">"
+            "<c xmlns=\"urn:tests:a\">\n"
+            "  <act>\n"
+            "    <al>value</al>\n"
+            "  </act>\n"
+            "</c>\n"
+            "</action>\n"
+            "</rpc>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_RPC_NETCONF, &tree, &op));
+    ly_in_free(in, 0);
+
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 1, 1, LY_VALUE_XML, "rpc", 0, 0, 0, 0, "");
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)lyd_child(tree), 0, 0, LY_VALUE_XML, "action", 0, 0, 0, 0, "");
+
+    assert_non_null(op);
+    CHECK_LYSC_ACTION((struct lysc_node_action *)op->schema, NULL, 0, LYS_STATUS_CURR,
+            1, 0, 0, 1, "act", LYS_ACTION,
+            1, 0, 0, 1, 0, NULL, 0);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS,
+            "<rpc xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\" message-id=\"25\">\n"
+            "  <action xmlns=\"urn:ietf:params:xml:ns:yang:1\"/>\n"
+            "</rpc>\n");
+    CHECK_LYD_STRING(op, LYD_PRINT_WITHSIBLINGS,
+            "<act xmlns=\"urn:tests:a\">\n"
+            "  <al>value</al>\n"
+            "</act>\n");
+
+    lyd_free_all(tree);
+    lyd_free_all(op);
+
+    /* wrong namespace, element name, whatever... */
+    /* TODO */
+}
+
+static void
+test_netconf_reply_or_notification(void **state)
+{
+    const char *data;
+    struct ly_in *in;
+    struct lyd_node *action, *tree, *op, *op2;
+
+    /* parse the action */
+    data = "<c xmlns=\"urn:tests:a\">\n"
+            "  <act>\n"
+            "    <al>value</al>\n"
+            "  </act>\n"
+            "</c>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_RPC_YANG, &action, &op));
+    ly_in_free(in, 0);
+
+    /* parse notification first */
+    data = "<notification xmlns=\"urn:ietf:params:xml:ns:netconf:notification:1.0\">\n"
+            "<eventTime>2010-12-06T08:00:01Z</eventTime>\n"
+            "<c xmlns=\"urn:tests:a\">\n"
+            "  <n1>\n"
+            "    <nl>value</nl>\n"
+            "  </n1>\n"
+            "</c>\n"
+            "</notification>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_NOTIF_NETCONF, &tree, &op2));
+    ly_in_free(in, 0);
+
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 0, 1, LY_VALUE_XML, "notification", 0, 0, 0, 0, "");
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)lyd_child(tree), 0, 0, LY_VALUE_XML, "eventTime", 0, 0, 0, 0,
+            "2010-12-06T08:00:01Z");
+
+    assert_non_null(op2);
+    CHECK_LYSC_NOTIF((struct lysc_node_notif *)op2->schema, 1, NULL, 0, 0x4, 1, 0, "n1", 1, 0, NULL, 0);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS,
+            "<notification xmlns=\"urn:ietf:params:xml:ns:netconf:notification:1.0\">\n"
+            "  <eventTime>2010-12-06T08:00:01Z</eventTime>\n"
+            "</notification>\n");
+    CHECK_LYD_STRING(op2, LYD_PRINT_WITHSIBLINGS,
+            "<n1 xmlns=\"urn:tests:a\">\n"
+            "  <nl>value</nl>\n"
+            "</n1>\n");
+
+    lyd_free_all(tree);
+    lyd_free_all(op2);
+
+    /* parse a data reply */
+    data = "<rpc-reply message-id=\"55\" xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\">\n"
+            "  <al xmlns=\"urn:tests:a\">25</al>\n"
+            "</rpc-reply>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, op, in, LYD_XML, LYD_TYPE_REPLY_NETCONF, &tree, NULL));
+    ly_in_free(in, 0);
+
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 1, 0, LY_VALUE_XML, "rpc-reply", 0, 0, 0, 0, "");
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS,
+            "<rpc-reply xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\" message-id=\"55\"/>\n");
+
+    lyd_free_all(tree);
+    /* it was connected to the action, do not free */
+
+    /* parse an ok reply */
+    data = "<rpc-reply xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\" message-id=\"55\">\n"
+            "  <ok/>\n"
+            "</rpc-reply>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, op, in, LYD_XML, LYD_TYPE_REPLY_NETCONF, &tree, NULL));
+    ly_in_free(in, 0);
+
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 1, 1, LY_VALUE_XML, "rpc-reply", 0, 0, 0, 0, "");
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)lyd_child(tree), 0, 0, LY_VALUE_XML, "ok", 0, 0, 0, 0, "");
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+
+    lyd_free_all(tree);
+
+    /* parse an error reply */
+    data = "<rpc-reply xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\" message-id=\"55\">\n"
+            "  <rpc-error>\n"
+            "    <error-type>rpc</error-type>\n"
+            "    <error-tag>missing-attribute</error-tag>\n"
+            "    <error-severity>error</error-severity>\n"
+            "    <error-info>\n"
+            "      <bad-attribute>message-id</bad-attribute>\n"
+            "      <bad-element>rpc</bad-element>\n"
+            "    </error-info>\n"
+            "  </rpc-error>\n"
+            "</rpc-reply>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, op, in, LYD_XML, LYD_TYPE_REPLY_NETCONF, &tree, NULL));
+    ly_in_free(in, 0);
+
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)tree, 1, 1, LY_VALUE_XML, "rpc-reply", 0, 0, 0, 0, "");
+    CHECK_LYD_NODE_OPAQ((struct lyd_node_opaq *)lyd_child(tree), 0, 1, LY_VALUE_XML, "rpc-error", 0, 0, 0, 0, "");
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+
+    lyd_free_all(tree);
+
+    lyd_free_all(action);
+
+    /* wrong namespace, element name, whatever... */
+    /* TODO */
+}
+
+static void
+test_filter_attributes(void **state)
+{
+    const char *data;
+    struct ly_in *in;
+    struct lyd_node *tree;
+    const struct lyd_node *node;
+    const char *dsc;
+    const char *ref = "RFC 6241, Section 7.7";
+    const char *feats[] = {"writable-running", NULL};
+
+    assert_non_null((ly_ctx_load_module(UTEST_LYCTX, "ietf-netconf", "2011-06-01", feats)));
+    assert_non_null((ly_ctx_load_module(UTEST_LYCTX, "notifications", "2008-07-14", NULL)));
+
+    data = "<get xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\">\n"
+            "  <filter type=\"xpath\" select=\"/*\"/>\n"
+            "</get>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_RPC_YANG, &tree, NULL));
+    ly_in_free(in, 0);
+    assert_non_null(tree);
+
+    node = tree;
+    dsc = "Retrieve running configuration and device state information.";
+    CHECK_LYSC_ACTION((struct lysc_node_action *)node->schema, dsc, 0, LYS_STATUS_CURR,
+            1, 0, 0, 1, "get", LYS_RPC,
+            1, 0, 0, 0, 0, ref, 0);
+    node = lyd_child(node);
+    dsc = "This parameter specifies the portion of the system\nconfiguration and state data to retrieve.";
+    CHECK_LYSC_NODE(node->schema, dsc, 1, LYS_STATUS_CURR | LYS_IS_INPUT, 1, "filter", 0, LYS_ANYXML, 1, 0, NULL, 0);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "<create-subscription xmlns=\"urn:ietf:params:xml:ns:netconf:notification:1.0\">\n"
+            "  <filter type=\"subtree\">\n"
+            "    <inner-node xmlns=\"my:urn\"/>\n"
+            "  </filter>\n"
+            "</create-subscription>\n";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_RPC_YANG, &tree, NULL));
+    ly_in_free(in, 0);
+    assert_non_null(tree);
+
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+}
+
+static void
+test_data_skip(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+    struct lyd_node_term *leaf;
+
+    /* add invalid data to a module that is not implemented */
+    data = "<foo xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-metadata\"><u/></foo>";
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(_UC->ctx, data, LYD_XML, 0, LYD_VALIDATE_PRESENT, &tree));
+    assert_null(tree);
+
+    /* add invalid data to a module that is implemented */
+    data = "<fooX xmlns=\"urn:tests:a\"><u/><list><value/></list></fooX>";
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(_UC->ctx, data, LYD_XML, 0, LYD_VALIDATE_PRESENT, &tree));
+    assert_null(tree);
+
+    /* first invalid, next valid */
+    data = "<fooX xmlns=\"urn:tests:a\"><u/></fooX>  <foo xmlns=\"urn:tests:a\">foo value</foo>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "foo", 1, LYS_LEAF, 0, 0, NULL, 0);
+    leaf = (struct lyd_node_term *)tree;
+    CHECK_LYD_VALUE(leaf->value, STRING, "foo value");
+    lyd_free_all(tree);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_leaf, setup),
+        UTEST(test_anydata, setup),
+        UTEST(test_list, setup),
+        UTEST(test_container, setup),
+        UTEST(test_opaq, setup),
+        UTEST(test_rpc, setup),
+        UTEST(test_action, setup),
+        UTEST(test_notification, setup),
+        UTEST(test_reply, setup),
+        UTEST(test_netconf_rpc, setup),
+        UTEST(test_netconf_action, setup),
+        UTEST(test_netconf_reply_or_notification, setup),
+        UTEST(test_filter_attributes, setup),
+        UTEST(test_data_skip, setup),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/data/test_printer_xml.c b/tests/utests/data/test_printer_xml.c
new file mode 100644
index 0000000..d533c41
--- /dev/null
+++ b/tests/utests/data/test_printer_xml.c
@@ -0,0 +1,343 @@
+/*
+ * @file test_printer_xml.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for functions from printer_yang.c
+ *
+ * Copyright (c) 2019-2020 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include <string.h>
+
+#include "context.h"
+#include "out.h"
+#include "parser_data.h"
+#include "printer_data.h"
+#include "tests_config.h"
+#include "tree_schema.h"
+
+static int
+setup(void **state)
+{
+    const char *schema_defs = "module defs {namespace urn:tests:defs;prefix d;yang-version 1.1;"
+            "identity crypto-alg; identity interface-type; identity ethernet {base interface-type;} identity fast-ethernet {base ethernet;}}";
+    const char *schema_types = "module types {namespace urn:tests:types;prefix t;yang-version 1.1; import defs {prefix defs;}"
+            "feature f; identity gigabit-ethernet { base defs:ethernet;}"
+            "container cont {leaf leaftarget {type empty;}"
+            "    list listtarget {key id; max-elements 5;leaf id {type uint8;} leaf value {type string;}"
+            "        action test {input {leaf a {type string;}} output {leaf b {type string;}}}}"
+            "    leaf-list leaflisttarget {type uint8; max-elements 5;}}"
+            "list list {key id; leaf id {type string;} leaf value {type string;} leaf-list targets {type string;}}"
+            "list list2 {key \"id value\"; leaf id {type string;} leaf value {type string;}}"
+            "list list_inst {key id; leaf id {type instance-identifier {require-instance true;}} leaf value {type string;}}"
+            "list list_ident {key id; leaf id {type identityref {base defs:interface-type;}} leaf value {type string;}}"
+            "leaf-list leaflisttarget {type string;}"
+            "leaf binary {type binary {length 5 {error-message \"This base64 value must be of length 5.\";}}}"
+            "leaf binary-norestr {type binary;}"
+            "leaf int8 {type int8 {range 10..20;}}"
+            "leaf uint8 {type uint8 {range 150..200;}}"
+            "leaf int16 {type int16 {range -20..-10;}}"
+            "leaf uint16 {type uint16 {range 150..200;}}"
+            "leaf int32 {type int32;}"
+            "leaf uint32 {type uint32;}"
+            "leaf int64 {type int64;}"
+            "leaf uint64 {type uint64;}"
+            "leaf bits {type bits {bit zero; bit one {if-feature f;} bit two;}}"
+            "leaf enums {type enumeration {enum white; enum yellow {if-feature f;}}}"
+            "leaf dec64 {type decimal64 {fraction-digits 1; range 1.5..10;}}"
+            "leaf dec64-norestr {type decimal64 {fraction-digits 18;}}"
+            "leaf str {type string {length 8..10; pattern '[a-z ]*';}}"
+            "leaf str-norestr {type string;}"
+            "leaf bool {type boolean;}"
+            "leaf empty {type empty;}"
+            "leaf ident {type identityref {base defs:interface-type;}}"
+            "leaf inst {type instance-identifier {require-instance true;}}"
+            "leaf inst-noreq {type instance-identifier {require-instance false;}}"
+            "leaf lref {type leafref {path /leaflisttarget; require-instance true;}}"
+            "leaf lref2 {type leafref {path \"../list[id = current()/../str-norestr]/targets\"; require-instance true;}}"
+            "leaf un1 {type union {"
+            "    type leafref {path /int8; require-instance true;}"
+            "    type union { type identityref {base defs:interface-type;} type instance-identifier {require-instance true;} }"
+            "    type string {length 1..20;}}}"
+            "anydata any;"
+            "rpc sum {input {leaf x {type uint8;} leaf y {type uint8;}} output {leaf result {type uint16;}}}}";
+    const char *schema_defaults =
+            "module defaults {\n"
+            "    namespace \"urn:defaults\";\n"
+            "    prefix d;\n"
+            "    leaf a {\n"
+            "        type union {\n"
+            "            type instance-identifier;\n"
+            "            type string;\n"
+            "        }\n"
+            "        default \"/d:b\";\n"
+            "    }\n"
+            "    leaf b {\n"
+            "        type string;\n"
+            "    }\n"
+            "    leaf c {\n"
+            "        type string;\n"
+            "    }\n"
+            "}";
+
+    UTEST_SETUP;
+
+    UTEST_ADD_MODULE(schema_defs, LYS_IN_YANG, NULL, NULL);
+    UTEST_ADD_MODULE(schema_types, LYS_IN_YANG, NULL, NULL);
+    UTEST_ADD_MODULE(schema_defaults, LYS_IN_YANG, NULL, NULL);
+
+    return 0;
+}
+
+#define CHECK_PARSE_LYD(INPUT, PARSE_OPTION, VALIDATE_OPTION, TREE) \
+    CHECK_PARSE_LYD_PARAM(INPUT, LYD_XML, PARSE_OPTION, VALIDATE_OPTION, LY_SUCCESS, TREE)
+
+#define CHECK_LYD_STRING(IN_MODEL, PRINT_OPTION, TEXT) \
+    CHECK_LYD_STRING_PARAM(IN_MODEL, TEXT, LYD_XML, PRINT_OPTION)
+
+static void
+test_anydata(void **state)
+{
+    struct lyd_node *tree;
+    const char *data;
+
+    data = "<any xmlns=\"urn:tests:types\"><somexml xmlns:x=\"url:x\" xmlns=\"example.com\"><x:x/></somexml></any>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    /* canonized */
+    data = "<any xmlns=\"urn:tests:types\"><somexml xmlns=\"example.com\"><x xmlns=\"url:x\"/></somexml></any>";
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "<any xmlns=\"urn:tests:types\"/>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYD_STRING(tree, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "<any xmlns=\"urn:tests:types\">\n"
+            "  <cont>\n"
+            "    <defs:elem1 xmlns:defs=\"urn:tests:defs\">\n"
+            "      <elem2 xmlns:defaults=\"urn:defaults\" defs:attr1=\"defaults:val\" attr2=\"/defaults:node/defs:node2\">\n"
+            "      </elem2>\n"
+            "    </defs:elem1>\n"
+            "  </cont>\n"
+            "</any>\n";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_non_null(tree);
+    tree = tree->next;
+    /* cont should be normally parsed */
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "any", 0, LYS_ANYDATA, 0, 0, NULL, 0);
+    CHECK_LYD_NODE_ANY((struct lyd_node_any *)tree, 0, 0, 0, LYD_ANYDATA_DATATREE);
+    struct lyd_node *tree_tmp = ((struct lyd_node_any *)tree)->value.tree;
+
+    CHECK_LYSC_NODE(tree_tmp->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "cont", 1, LYS_CONTAINER, 0, 0, NULL, 0);
+    /* but its children not */
+    assert_null(((struct lyd_node_inner *)tree_tmp)->child->schema);
+    /* canonized */
+    data =
+            "<any xmlns=\"urn:tests:types\">\n"
+            "  <cont>\n"
+            "    <elem1 xmlns=\"urn:tests:defs\">\n"
+            "      <elem2 xmlns=\"urn:tests:types\" xmlns:defs=\"urn:tests:defs\" xmlns:defaults=\"urn:defaults\" "
+            "defs:attr1=\"defaults:val\" attr2=\"/defaults:node/defs:node2\"/>\n"
+            "    </elem1>\n"
+            "  </cont>\n"
+            "</any>\n";
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "<any xmlns=\"urn:tests:types\">\n"
+            "  <ahoj attr=\"&lt;test\">\n"
+            "       ahoj jak se vede &lt; how are you"
+            "  </ahoj>\n"
+            "</any>\n";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "<any xmlns=\"urn:tests:types\">\n"
+            "  <leaflisttarget> ahoj   </leaflisttarget>\n"
+            "  <leaflisttarget> nazdar </leaflisttarget>\n"
+            "  <leaflisttarget> Čau    </leaflisttarget>\n"
+            "</any>\n";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "<any xmlns=\"urn:tests:types\">\n"
+            "  <cont2/>\n"
+            "</any>\n";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    data = "<any xmlns=\"urn:tests:types\">\n"
+            "  <cont>\n"
+            "        &lt; how are you"
+            "  </cont>\n"
+            "</any>\n";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+}
+
+static void
+test_defaults(void **state)
+{
+    struct lyd_node *tree;
+    const char *data;
+    const char *data_trim;
+    const char *data_all;
+    const char *data_all_tag;
+    const char *data_impl_tag;
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "ietf-netconf-with-defaults", "2011-06-01", NULL));
+
+    /* standard default value */
+    data = "<c xmlns=\"urn:defaults\">aa</c>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WD_TRIM | LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+
+    data = "<a xmlns=\"urn:defaults\" xmlns:d=\"urn:defaults\">/d:b</a><c xmlns=\"urn:defaults\">aa</c>";
+    CHECK_LYD_STRING(tree, LYD_PRINT_WD_ALL | LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+
+    data = "<a xmlns=\"urn:defaults\" xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\""
+            " ncwd:default=\"true\" xmlns:d=\"urn:defaults\">/d:b</a>"
+            "<c xmlns=\"urn:defaults\">aa</c>";
+    CHECK_LYD_STRING(tree, LYD_PRINT_WD_ALL_TAG | LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+
+    data = "<a xmlns=\"urn:defaults\" xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\""
+            " ncwd:default=\"true\" xmlns:d=\"urn:defaults\">/d:b</a>"
+            "<c xmlns=\"urn:defaults\">aa</c>";
+    CHECK_LYD_STRING(tree, LYD_PRINT_WD_IMPL_TAG | LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* string value equal to the default but default is an unresolved instance-identifier, so they are not considered equal */
+    data = "<a xmlns=\"urn:defaults\">/d:b</a><c xmlns=\"urn:defaults\">aa</c>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WD_TRIM | LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WD_ALL | LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WD_ALL_TAG | LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WD_IMPL_TAG | LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data);
+    lyd_free_all(tree);
+
+    /* instance-identifier value equal to the default, should be considered equal */
+    data = "<a xmlns=\"urn:defaults\" xmlns:d=\"urn:defaults\">/d:b</a><b xmlns=\"urn:defaults\">val</b><c xmlns=\"urn:defaults\">aa</c>";
+    data_trim = "<b xmlns=\"urn:defaults\">val</b><c xmlns=\"urn:defaults\">aa</c>";
+    data_all = "<a xmlns=\"urn:defaults\" xmlns:d=\"urn:defaults\">/d:b</a><b xmlns=\"urn:defaults\">val</b><c xmlns=\"urn:defaults\">aa</c>";
+    data_all_tag = "<a xmlns=\"urn:defaults\" xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\""
+            " ncwd:default=\"true\" xmlns:d=\"urn:defaults\">/d:b</a>"
+            "<b xmlns=\"urn:defaults\">val</b>"
+            "<c xmlns=\"urn:defaults\">aa</c>";
+    data_impl_tag = "<a xmlns=\"urn:defaults\" xmlns:d=\"urn:defaults\">/d:b</a><b xmlns=\"urn:defaults\">val</b><c xmlns=\"urn:defaults\">aa</c>";
+
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WD_TRIM | LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data_trim);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WD_ALL | LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data_all);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WD_ALL_TAG | LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data_all_tag);
+    CHECK_LYD_STRING(tree, LYD_PRINT_WD_IMPL_TAG | LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS, data_impl_tag);
+    lyd_free_all(tree);
+}
+
+#if 0
+
+static void
+test_rpc(void **state)
+{
+    struct state_s *s = (struct state_s *)(*state);
+    struct lyd_node *tree1;
+    struct lyd_node *tree2;
+    const struct lyd_node **trees;
+    const char *request;
+    const char *reply, *result;
+    char *printed;
+    ssize_t len;
+    struct ly_out *out;
+
+    s->func = test_rpc;
+    assert_non_null(out = ly_out_new_memory(&printed, 0));
+
+    request = "<sum xmlns=\"urn:tests:types\"><x>10</x><y>20</y></sum>";
+    reply = "<result xmlns=\"urn:tests:types\">30</result>";
+    result = "<sum xmlns=\"urn:tests:types\"><result>30</result></sum>";
+    assert_non_null(tree1 = lyd_parse_mem(s->ctx, request, LYD_XML, LYD_OPT_RPC, NULL));
+    assert_true((len = lyd_print_tree(out, tree1, LYD_XML, LYD_PRINT_SHRINK)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, request);
+    ly_out_reset(out);
+    assert_non_null(trees = lyd_trees_new(1, tree1));
+    assert_non_null(tree2 = lyd_parse_mem(s->ctx, reply, LYD_XML, LYD_OPT_RPCREPLY, trees));
+    assert_true((len = lyd_print_tree(out, tree2, LYD_XML, LYD_PRINT_SHRINK)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, result);
+    ly_out_reset(out);
+    lyd_trees_free(trees, 0);
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    /* no arguments */
+    request = "<sum xmlns=\"urn:tests:types\"/>";
+    reply = "";
+    result = "<sum xmlns=\"urn:tests:types\"/>";
+    assert_non_null(tree1 = lyd_parse_mem(s->ctx, request, LYD_XML, LYD_OPT_RPC, NULL));
+    assert_true((len = lyd_print_tree(out, tree1, LYD_XML, LYD_PRINT_SHRINK)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, request);
+    ly_out_reset(out);
+    assert_non_null(trees = lyd_trees_new(1, tree1));
+    assert_non_null(tree2 = lyd_parse_mem(s->ctx, reply, LYD_XML, LYD_OPT_RPCREPLY, trees));
+    assert_true((len = lyd_print_tree(out, tree2, LYD_XML, LYD_PRINT_SHRINK)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, result);
+    ly_out_reset(out);
+    lyd_trees_free(trees, 0);
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    /* action
+     * "container cont {leaf leaftarget {type empty;}"
+                            "list listtarget {key id; max-elements 5;leaf id {type uint8;} leaf value {type string;}"
+                                             "action test {input {leaf a {type string;}} output {leaf b {type string;}}}}"
+                            "leaf-list leaflisttarget {type uint8; max-elements 5;}}"
+                            */
+    request = "<cont xmlns=\"urn:tests:types\"><listtarget><id>10</id><test><a>test</a></test></listtarget></cont>";
+    reply = "<b xmlns=\"urn:tests:types\">test-reply</b>";
+    result = "<cont xmlns=\"urn:tests:types\"><listtarget><id>10</id><test><b>test-reply</b></test></listtarget></cont>";
+    assert_non_null(tree1 = lyd_parse_mem(s->ctx, request, LYD_XML, LYD_OPT_RPC, NULL));
+    assert_true((len = lyd_print_tree(out, tree1, LYD_XML, LYD_PRINT_SHRINK)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, request);
+    ly_out_reset(out);
+    assert_non_null(trees = lyd_trees_new(1, tree1));
+    assert_non_null(tree2 = lyd_parse_mem(s->ctx, reply, LYD_XML, LYD_OPT_RPCREPLY, trees));
+    assert_true((len = lyd_print_tree(out, tree2, LYD_XML, LYD_PRINT_SHRINK)) >= 0);
+    assert_int_equal(len, strlen(printed));
+    assert_string_equal(printed, result);
+    ly_out_reset(out);
+    lyd_trees_free(trees, 0);
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    ly_out_free(out, NULL, 1);
+    s->func = NULL;
+}
+
+#endif
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_anydata, setup),
+        UTEST(test_defaults, setup),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/data/test_tree_data.c b/tests/utests/data/test_tree_data.c
new file mode 100644
index 0000000..27dba42
--- /dev/null
+++ b/tests/utests/data/test_tree_data.c
@@ -0,0 +1,597 @@
+/**
+ * @file test_tree_data.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for functions from tress_data.c
+ *
+ * Copyright (c) 2018-2019 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "common.h"
+#include "libyang.h"
+#include "path.h"
+#include "xpath.h"
+
+static int
+setup(void **state)
+{
+    const char *schema1 = "module a {namespace urn:tests:a;prefix a;yang-version 1.1;"
+            "revision 2014-05-08;"
+            "leaf bar {type string;}"
+            "list l1 { key \"a b\"; leaf a {type string;} leaf b {type string;} leaf c {type string;}}"
+            "leaf foo { type string;}"
+            "leaf-list ll { type string;}"
+            "container c {leaf-list x {type string;}}"
+            "anydata any {config false;}"
+            "list l2 {config false;"
+            "    container c{leaf x {type string;} leaf-list d {type string;}}"
+            "}}";
+
+    const char *schema2 = "module b {namespace urn:tests:b;prefix b;yang-version 1.1;"
+            "revision 2014-05-08;"
+            "list l2 {config false;"
+            "    container c{leaf x {type string;}}}"
+            "anydata any {config false;}"
+            "}";
+
+    const char *schema3 = "module c {yang-version 1.1; namespace \"http://example.com/main\";prefix m;"
+            "import \"ietf-inet-types\" {prefix inet;}"
+            "typedef optional-ip-address {type union {"
+            "   type inet:ip-address;"
+            "   type string;"
+            "}}"
+            "container cont {"
+            "   list nexthop {min-elements 1; key \"gateway\";"
+            "       leaf gateway {type optional-ip-address;}"
+            "   }"
+            "   leaf-list pref {type inet:ipv6-prefix;}"
+            "}}";
+
+    UTEST_SETUP;
+
+    UTEST_ADD_MODULE(schema1, LYS_IN_YANG, NULL, NULL);
+    UTEST_ADD_MODULE(schema2, LYS_IN_YANG, NULL, NULL);
+    UTEST_ADD_MODULE(schema3, LYS_IN_YANG, NULL, NULL);
+
+    return 0;
+}
+
+#define CHECK_PARSE_LYD(INPUT, PARSE_OPTION, VALIDATE_OPTION, TREE) \
+    CHECK_PARSE_LYD_PARAM(INPUT, LYD_XML, PARSE_OPTION, VALIDATE_OPTION, LY_SUCCESS, TREE)
+
+#define CHECK_PARSE_LYD_PARAM_CTX(CTX, INPUT, PARSE_OPTION, OUT_NODE) \
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(CTX, INPUT, LYD_XML, PARSE_OPTION, LYD_VALIDATE_PRESENT, &OUT_NODE)); \
+    assert_non_null(OUT_NODE);
+
+#define RECREATE_CTX_WITH_MODULE(CTX, MODULE) \
+    ly_ctx_destroy(CTX); \
+    assert_int_equal(LY_SUCCESS, ly_ctx_new(NULL, 0, &CTX)); \
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(MODULE, &_UC->in)); \
+    assert_int_equal(LY_SUCCESS, lys_parse(CTX, _UC->in, LYS_IN_YANG, NULL, NULL)); \
+    ly_in_free(_UC->in, 0);
+
+static void
+test_compare(void **state)
+{
+    struct lyd_node *tree1, *tree2;
+    const char *data1;
+    const char *data2;
+
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(NULL, NULL, 0));
+
+    data1 = "<l1 xmlns=\"urn:tests:a\"><a>a</a><b>b</b><c>x</c></l1>";
+    data2 = "<l1 xmlns=\"urn:tests:a\"><a>a</a><b>b</b><c>y</c></l1>";
+    CHECK_PARSE_LYD(data1, 0, LYD_VALIDATE_PRESENT, tree1);
+    CHECK_PARSE_LYD(data2, 0, LYD_VALIDATE_PRESENT, tree2);
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1, tree2, 0));
+    assert_int_equal(LY_ENOT, lyd_compare_single(tree1, tree2, LYD_COMPARE_FULL_RECURSION));
+    assert_int_equal(LY_ENOT, lyd_compare_single(((struct lyd_node_inner *)tree1)->child, tree2, 0));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    data1 = "<l2 xmlns=\"urn:tests:a\"><c><x>a</x></c></l2><l2 xmlns=\"urn:tests:a\"><c><x>b</x></c></l2>";
+    data2 = "<l2 xmlns=\"urn:tests:a\"><c><x>b</x></c></l2>";
+    CHECK_PARSE_LYD(data1, 0, LYD_VALIDATE_PRESENT, tree1);
+    CHECK_PARSE_LYD(data2, 0, LYD_VALIDATE_PRESENT, tree2);
+    assert_int_equal(LY_ENOT, lyd_compare_single(tree1->next, tree2->next, 0));
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1->next->next, tree2->next, 0));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    data1 = "<ll xmlns=\"urn:tests:a\">a</ll><ll xmlns=\"urn:tests:a\">b</ll>";
+    data2 = "<ll xmlns=\"urn:tests:a\">b</ll>";
+    CHECK_PARSE_LYD(data1, 0, LYD_VALIDATE_PRESENT, tree1);
+    CHECK_PARSE_LYD(data2, 0, LYD_VALIDATE_PRESENT, tree2);
+    assert_int_equal(LY_ENOT, lyd_compare_single(tree1, tree2, 0));
+    assert_int_equal(LY_ENOT, lyd_compare_single(NULL, tree2, 0));
+    assert_int_equal(LY_ENOT, lyd_compare_single(tree1, NULL, 0));
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1->next, tree2, 0));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    data1 = "<c xmlns=\"urn:tests:a\"><x>x</x></c>";
+    data2 = "<c xmlns=\"urn:tests:a\"><x>y</x></c>";
+    CHECK_PARSE_LYD(data1, 0, LYD_VALIDATE_PRESENT, tree1);
+    CHECK_PARSE_LYD(data2, 0, LYD_VALIDATE_PRESENT, tree2);
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1, tree2, 0));
+    assert_int_equal(LY_ENOT, lyd_compare_single(tree1, tree2, LYD_COMPARE_FULL_RECURSION));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    data1 = "<c xmlns=\"urn:tests:a\"><x>x</x></c>";
+    data2 = "<c xmlns=\"urn:tests:a\"><x>x</x><x>y</x></c>";
+    CHECK_PARSE_LYD(data1, 0, LYD_VALIDATE_PRESENT, tree1);
+    CHECK_PARSE_LYD(data2, 0, LYD_VALIDATE_PRESENT, tree2);
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1, tree2, 0));
+    assert_int_equal(LY_ENOT, lyd_compare_single(tree1, tree2, LYD_COMPARE_FULL_RECURSION));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    data1 = "<any xmlns=\"urn:tests:a\"><x>x</x></any>";
+    data2 = "<any xmlns=\"urn:tests:a\"><x>x</x><x>y</x></any>";
+    CHECK_PARSE_LYD(data1, 0, LYD_VALIDATE_PRESENT, tree1);
+    CHECK_PARSE_LYD(data2, 0, LYD_VALIDATE_PRESENT, tree2);
+    assert_int_equal(LY_ENOT, lyd_compare_single(tree1->next, tree2->next, 0));
+    lyd_free_all(tree1);
+    data1 = "<any xmlns=\"urn:tests:a\"><x>x</x><x>y</x></any>";
+    CHECK_PARSE_LYD(data1, 0, LYD_VALIDATE_PRESENT, tree1);
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1, tree2, 0));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+}
+
+static void
+test_compare_diff_ctx(void **state)
+{
+    struct lyd_node *tree1, *tree2;
+    const char *data1, *data2;
+    struct ly_ctx *ctx2 = NULL;
+    const char *module;
+
+    /* create second context with the same schema */
+    module = "module b {namespace urn:tests:b;prefix b;yang-version 1.1;"
+            "revision 2014-05-08;"
+            "list l2 {config false;"
+            "    container c{leaf x {type string;}}"
+            "}}";
+    RECREATE_CTX_WITH_MODULE(ctx2, module);
+    data1 = "<l2 xmlns=\"urn:tests:b\"><c><x>b</x></c></l2>";
+    data2 = "<l2 xmlns=\"urn:tests:b\"><c><x>b</x></c></l2>";
+    CHECK_PARSE_LYD_PARAM_CTX(UTEST_LYCTX, data1, 0, tree1);
+    CHECK_PARSE_LYD_PARAM_CTX(ctx2, data2, 0, tree2);
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1, tree2, LYD_COMPARE_FULL_RECURSION));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    /* recreate second context with schema that has a different name */
+    module = "module c {namespace urn:tests:c;prefix c;yang-version 1.1;"
+            "revision 2014-05-08;"
+            "list l2 {config false;"
+            "    container c{leaf x {type string;}}"
+            "}}";
+    RECREATE_CTX_WITH_MODULE(ctx2, module);
+    data1 = "<l2 xmlns=\"urn:tests:b\"><c><x>b</x></c></l2>";
+    data2 = "<l2 xmlns=\"urn:tests:c\"><c><x>b</x></c></l2>";
+    CHECK_PARSE_LYD_PARAM_CTX(UTEST_LYCTX, data1, 0, tree1);
+    CHECK_PARSE_LYD_PARAM_CTX(ctx2, data2, 0, tree2);
+    assert_int_equal(LY_ENOT, lyd_compare_single(tree1, tree2, 0));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    /* recreate second context with schema that has a different revision */
+    module = "module b {namespace urn:tests:b;prefix b;yang-version 1.1;"
+            "revision 2015-05-08;"
+            "list l2 {config false;"
+            "    container c{leaf x {type string;}}"
+            "}}";
+    RECREATE_CTX_WITH_MODULE(ctx2, module);
+    data1 = "<l2 xmlns=\"urn:tests:b\"><c><x>b</x></c></l2>";
+    data2 = "<l2 xmlns=\"urn:tests:b\"><c><x>b</x></c></l2>";
+    CHECK_PARSE_LYD_PARAM_CTX(UTEST_LYCTX, data1, 0, tree1);
+    CHECK_PARSE_LYD_PARAM_CTX(ctx2, data2, 0, tree2);
+    assert_int_equal(LY_ENOT, lyd_compare_single(tree1, tree2, 0));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    /* recreate second context with schema that has no revision */
+    module = "module b {namespace urn:tests:b;prefix b;yang-version 1.1;"
+            "list l2 {config false;"
+            "    container c{leaf x {type string;}}"
+            "}}";
+    RECREATE_CTX_WITH_MODULE(ctx2, module);
+    data1 = "<l2 xmlns=\"urn:tests:b\"><c><x>b</x></c></l2>";
+    data2 = "<l2 xmlns=\"urn:tests:b\"><c><x>b</x></c></l2>";
+    CHECK_PARSE_LYD_PARAM_CTX(UTEST_LYCTX, data1, 0, tree1);
+    CHECK_PARSE_LYD_PARAM_CTX(ctx2, data2, 0, tree2);
+    assert_int_equal(LY_ENOT, lyd_compare_single(tree1, tree2, 0));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    /* recreate second context with schema that has a different parent nodetype */
+    module = "module b {namespace urn:tests:b;prefix b;yang-version 1.1;"
+            "revision 2014-05-08;"
+            "container l2 {config false;"
+            "    container c{leaf x {type string;}}"
+            "}}";
+    RECREATE_CTX_WITH_MODULE(ctx2, module);
+    data1 = "<l2 xmlns=\"urn:tests:b\"><c><x>b</x></c></l2>";
+    data2 = "<l2 xmlns=\"urn:tests:b\"><c><x>b</x></c></l2>";
+    CHECK_PARSE_LYD_PARAM_CTX(UTEST_LYCTX, data1, 0, tree1);
+    CHECK_PARSE_LYD_PARAM_CTX(ctx2, data2, 0, tree2);
+    assert_int_equal(LY_ENOT, lyd_compare_single(lyd_child(lyd_child(tree1)), lyd_child(lyd_child(tree2)), 0));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    /* recreate second context with the same opaq data nodes */
+    module = "module b {namespace urn:tests:b;prefix b;yang-version 1.1;"
+            "revision 2014-05-08;"
+            "anydata any {config false;}"
+            "}";
+    RECREATE_CTX_WITH_MODULE(ctx2, module);
+    data1 = "<any xmlns=\"urn:tests:b\" xmlns:aa=\"urn:tests:b\"><x>aa:x</x></any>";
+    data2 = "<any xmlns=\"urn:tests:b\" xmlns:bb=\"urn:tests:b\"><x>bb:x</x></any>";
+    CHECK_PARSE_LYD_PARAM_CTX(UTEST_LYCTX, data1, LYD_PARSE_ONLY, tree1);
+    CHECK_PARSE_LYD_PARAM_CTX(ctx2, data2, LYD_PARSE_ONLY, tree2);
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1, tree2, 0));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    /* recreate second context with the different opaq data node value */
+    module = "module b {namespace urn:tests:b;prefix b;yang-version 1.1;"
+            "revision 2014-05-08;"
+            "anydata any {config false;}"
+            "}";
+    RECREATE_CTX_WITH_MODULE(ctx2, module);
+    data1 = "<any xmlns=\"urn:tests:b\" xmlns:aa=\"urn:tests:b\"><x>aa:x</x></any>";
+    data2 = "<any xmlns=\"urn:tests:b\" xmlns:bb=\"urn:tests:b\"><x>bb:y</x></any>";
+    CHECK_PARSE_LYD_PARAM_CTX(UTEST_LYCTX, data1, LYD_PARSE_ONLY, tree1);
+    CHECK_PARSE_LYD_PARAM_CTX(ctx2, data2, LYD_PARSE_ONLY, tree2);
+    assert_int_equal(LY_ENOT, lyd_compare_single(tree1, tree2, 0));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    /* recreate second context with the wrong prefix in opaq data node value */
+    module = "module b {namespace urn:tests:b;prefix b;yang-version 1.1;"
+            "revision 2014-05-08;"
+            "anydata any {config false;}"
+            "}";
+    RECREATE_CTX_WITH_MODULE(ctx2, module);
+    data1 = "<any xmlns=\"urn:tests:b\" xmlns:aa=\"urn:tests:b\"><x>aa:x</x></any>";
+    data2 = "<any xmlns=\"urn:tests:b\" xmlns:bb=\"urn:tests:b\"><x>cc:x</x></any>";
+    CHECK_PARSE_LYD_PARAM_CTX(UTEST_LYCTX, data1, LYD_PARSE_ONLY, tree1);
+    CHECK_PARSE_LYD_PARAM_CTX(ctx2, data2, LYD_PARSE_ONLY, tree2);
+    assert_int_equal(LY_ENOT, lyd_compare_single(tree1, tree2, 0));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    /* clean up */
+    ly_ctx_destroy(ctx2);
+    _UC->in = NULL;
+}
+
+static void
+test_dup(void **state)
+{
+    struct lyd_node *tree1, *tree2;
+    const char *result;
+    const char *data;
+
+    data = "<l1 xmlns=\"urn:tests:a\"><a>a</a><b>b</b><c>x</c></l1>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree1);
+    assert_int_equal(LY_SUCCESS, lyd_dup_single(tree1, NULL, LYD_DUP_RECURSIVE, &tree2));
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1, tree2, LYD_COMPARE_FULL_RECURSION));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    data = "<l1 xmlns=\"urn:tests:a\"><a>a</a><b>b</b><c>x</c></l1>";
+    result = "<l1 xmlns=\"urn:tests:a\"><a>a</a><b>b</b></l1>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree1);
+    assert_int_equal(LY_SUCCESS, lyd_dup_single(tree1, NULL, 0, &tree2));
+    lyd_free_all(tree1);
+    CHECK_PARSE_LYD(result, 0, LYD_VALIDATE_PRESENT, tree1);
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1, tree2, LYD_COMPARE_FULL_RECURSION));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    data = "<l2 xmlns=\"urn:tests:a\"><c><x>a</x></c></l2><l2 xmlns=\"urn:tests:a\"><c><x>b</x></c></l2>";
+    result = "<l2 xmlns=\"urn:tests:a\"><c><x>a</x></c></l2>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree1);
+    assert_int_equal(LY_SUCCESS, lyd_dup_siblings(tree1, NULL, LYD_DUP_RECURSIVE, &tree2));
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1->next, tree2->next, LYD_COMPARE_FULL_RECURSION));
+    lyd_free_all(tree2);
+    assert_int_equal(LY_SUCCESS, lyd_dup_single(tree1->next, NULL, LYD_DUP_RECURSIVE, &tree2));
+    lyd_free_all(tree1);
+    CHECK_PARSE_LYD(result, 0, LYD_VALIDATE_PRESENT, tree1);
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1->next, tree2, LYD_COMPARE_FULL_RECURSION));
+    lyd_free_all(tree2);
+
+    assert_int_equal(LY_SUCCESS, lyd_dup_single(tree1->next, NULL, 0, &tree2));
+    lyd_free_all(tree1);
+    result = "<l2 xmlns=\"urn:tests:a\"/>";
+    CHECK_PARSE_LYD_PARAM(result, LYD_XML, LYD_PARSE_ONLY, 0, LY_SUCCESS, tree1);
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1, tree2, LYD_COMPARE_FULL_RECURSION));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    data = "<any xmlns=\"urn:tests:a\"><c><a>a</a></c></any>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree1);
+    assert_int_equal(LY_SUCCESS, lyd_dup_single(tree1, NULL, 0, &tree2));
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1, tree2, LYD_COMPARE_FULL_RECURSION));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    data = "<l2 xmlns=\"urn:tests:a\"><c><x>b</x></c></l2>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree1);
+    assert_int_equal(LY_SUCCESS, lyd_dup_single(((struct lyd_node_inner *)((struct lyd_node_inner *)tree1->next)->child)->child, NULL,
+            LYD_DUP_WITH_PARENTS, &tree2));
+    int unsigned flag = LYS_CONFIG_R | LYS_SET_ENUM;
+
+    CHECK_LYSC_NODE(tree2->schema, NULL, 0, flag, 1, "x", 1, LYS_LEAF, 1, 0, NULL, 0);
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1->next, (struct lyd_node *)tree2->parent->parent,
+            LYD_COMPARE_FULL_RECURSION));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    data = "<l1 xmlns=\"urn:tests:a\"><a>a</a><b>b</b><c>c</c></l1>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree1);
+    assert_int_equal(LY_SUCCESS, lyd_dup_single(((struct lyd_node_inner *)tree1)->child->prev, NULL,
+            LYD_DUP_WITH_PARENTS, &tree2));
+    flag = LYS_CONFIG_W | LYS_SET_ENUM;
+    CHECK_LYSC_NODE(tree2->schema, NULL, 0, flag, 1, "c", 0, LYS_LEAF, 1, 0, NULL, 0);
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1, (struct lyd_node *)tree2->parent, LYD_COMPARE_FULL_RECURSION));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    data = "<l2 xmlns=\"urn:tests:a\"><c><x>b</x></c></l2>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree1);
+    assert_int_equal(LY_SUCCESS, lyd_dup_single(tree1->next, NULL, 0, &tree2));
+    assert_int_equal(LY_SUCCESS, lyd_dup_single(((struct lyd_node_inner *)((struct lyd_node_inner *)tree1->next)->child)->child,
+            (struct lyd_node_inner *)tree2, LYD_DUP_WITH_PARENTS, NULL));
+    assert_int_equal(LY_SUCCESS, lyd_compare_single(tree1->next, tree2, LYD_COMPARE_FULL_RECURSION));
+    lyd_free_all(tree1);
+    lyd_free_all(tree2);
+
+    /* invalid */
+    data = "<l1 xmlns=\"urn:tests:a\"><a>a</a><b>b</b><c>c</c></l1><l2 xmlns=\"urn:tests:a\"><c><x>b</x></c></l2>";
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree1);
+    assert_int_equal(LY_EINVAL, lyd_dup_single(((struct lyd_node_inner *)tree1)->child->prev,
+            (struct lyd_node_inner *)tree1->next, LYD_DUP_WITH_PARENTS, NULL));
+    lyd_free_all(tree1);
+}
+
+static void
+test_target(void **state)
+{
+    const struct lyd_node_term *term;
+    struct lyd_node *tree;
+    struct lyxp_expr *exp;
+    struct ly_path *path;
+    const char *path_str = "/a:l2[2]/c/d[3]";
+    const char *data =
+            "<l2 xmlns=\"urn:tests:a\"><c>"
+            "  <d>a</d>"
+            "  </c></l2>"
+            "<l2 xmlns=\"urn:tests:a\"><c>"
+            "  <d>a</d>"
+            "  <d>b</d>"
+            "  <d>b</d>"
+            "  <d>c</d>"
+            "</c></l2>"
+            "<l2 xmlns=\"urn:tests:a\"><c>"
+            "</c></l2>";
+
+    CHECK_PARSE_LYD(data, 0, LYD_VALIDATE_PRESENT, tree);
+    assert_int_equal(LY_SUCCESS, ly_path_parse(UTEST_LYCTX, NULL, path_str, strlen(path_str), 0, LY_PATH_BEGIN_EITHER,
+            LY_PATH_PREFIX_OPTIONAL, LY_PATH_PRED_SIMPLE, &exp));
+    assert_int_equal(LY_SUCCESS, ly_path_compile(UTEST_LYCTX, NULL, NULL, NULL, exp, LY_PATH_OPER_INPUT,
+            LY_PATH_TARGET_SINGLE, 1, LY_VALUE_JSON, NULL, &path));
+    term = lyd_target(path, tree);
+
+    const int unsigned flag = LYS_CONFIG_R | LYS_SET_ENUM | LYS_ORDBY_USER;
+
+    CHECK_LYSC_NODE(term->schema, NULL, 0, flag, 1, "d", 0, LYS_LEAFLIST, 1, 0, NULL, 0);
+    assert_string_equal(lyd_get_value(&term->node), "b");
+    assert_string_equal(lyd_get_value(term->prev), "b");
+
+    lyd_free_all(tree);
+    ly_path_free(UTEST_LYCTX, path);
+    lyxp_expr_free(UTEST_LYCTX, exp);
+}
+
+static void
+test_list_pos(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+
+    data = "<bar xmlns=\"urn:tests:a\">test</bar>"
+            "<l1 xmlns=\"urn:tests:a\"><a>one</a><b>one</b></l1>"
+            "<l1 xmlns=\"urn:tests:a\"><a>two</a><b>two</b></l1>"
+            "<foo xmlns=\"urn:tests:a\">test</foo>";
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, 0, LYD_VALIDATE_PRESENT, &tree));
+    assert_int_equal(0, lyd_list_pos(tree));
+    assert_int_equal(1, lyd_list_pos(tree->next));
+    assert_int_equal(2, lyd_list_pos(tree->next->next));
+    assert_int_equal(0, lyd_list_pos(tree->next->next->next));
+    lyd_free_all(tree);
+
+    data = "<ll xmlns=\"urn:tests:a\">one</ll>"
+            "<ll xmlns=\"urn:tests:a\">two</ll>"
+            "<ll xmlns=\"urn:tests:a\">three</ll>";
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, 0, LYD_VALIDATE_PRESENT, &tree));
+    assert_int_equal(1, lyd_list_pos(tree));
+    assert_int_equal(2, lyd_list_pos(tree->next));
+    assert_int_equal(3, lyd_list_pos(tree->next->next));
+    lyd_free_all(tree);
+
+    data = "<ll xmlns=\"urn:tests:a\">one</ll>"
+            "<l1 xmlns=\"urn:tests:a\"><a>one</a><b>one</b></l1>"
+            "<ll xmlns=\"urn:tests:a\">two</ll>"
+            "<l1 xmlns=\"urn:tests:a\"><a>two</a><b>two</b></l1>"
+            "<ll xmlns=\"urn:tests:a\">three</ll>"
+            "<l1 xmlns=\"urn:tests:a\"><a>three</a><b>three</b></l1>";
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, 0, LYD_VALIDATE_PRESENT, &tree));
+    assert_string_equal("l1", tree->schema->name);
+    assert_int_equal(1, lyd_list_pos(tree));
+    assert_int_equal(2, lyd_list_pos(tree->next));
+    assert_int_equal(3, lyd_list_pos(tree->next->next));
+    assert_string_equal("ll", tree->next->next->next->schema->name);
+    assert_int_equal(1, lyd_list_pos(tree->next->next->next));
+    assert_int_equal(2, lyd_list_pos(tree->next->next->next->next));
+    assert_int_equal(3, lyd_list_pos(tree->next->next->next->next->next));
+    lyd_free_all(tree);
+}
+
+static void
+test_first_sibling(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+    struct lyd_node_inner *parent;
+
+    data = "<bar xmlns=\"urn:tests:a\">test</bar>"
+            "<l1 xmlns=\"urn:tests:a\"><a>one</a><b>one</b><c>one</c></l1>"
+            "<foo xmlns=\"urn:tests:a\">test</foo>";
+    assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, data, LYD_XML, 0, LYD_VALIDATE_PRESENT, &tree));
+    assert_ptr_equal(tree, lyd_first_sibling(tree->next));
+    assert_ptr_equal(tree, lyd_first_sibling(tree));
+    assert_ptr_equal(tree, lyd_first_sibling(tree->prev));
+    parent = (struct lyd_node_inner *)tree->next;
+    assert_int_equal(LYS_LIST, parent->schema->nodetype);
+    assert_ptr_equal(parent->child, lyd_first_sibling(parent->child->next));
+    assert_ptr_equal(parent->child, lyd_first_sibling(parent->child));
+    assert_ptr_equal(parent->child, lyd_first_sibling(parent->child->prev));
+    lyd_free_all(tree);
+}
+
+static void
+test_find_path(void **state)
+{
+    struct lyd_node *root;
+    const struct lys_module *mod;
+
+    mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "c");
+    assert_non_null(mod);
+
+    assert_int_equal(LY_SUCCESS, lyd_new_inner(NULL, mod, "cont", 0, &root));
+    assert_int_equal(LY_SUCCESS, lyd_new_path(root, NULL, "/c:cont/nexthop[gateway='10.0.0.1']", NULL, LYD_NEW_PATH_UPDATE, NULL));
+    assert_int_equal(LY_SUCCESS, lyd_new_path(root, NULL, "/c:cont/nexthop[gateway='2100::1']", NULL, LYD_NEW_PATH_UPDATE, NULL));
+    assert_int_equal(LY_SUCCESS, lyd_new_path(root, NULL, "/c:cont/pref[.='fc00::/64']", NULL, 0, NULL));
+
+    assert_int_equal(LY_SUCCESS, lyd_find_path(root, "/c:cont/nexthop[gateway='10.0.0.1']", 0, NULL));
+    assert_int_equal(LY_SUCCESS, lyd_find_path(root, "/c:cont/nexthop[gateway='2100::1']", 0, NULL));
+    assert_int_equal(LY_SUCCESS, lyd_find_path(root, "/c:cont/pref[.='fc00::/64']", 0, NULL));
+    lyd_free_all(root);
+}
+
+static void
+test_data_hash(void **state)
+{
+    struct lyd_node *tree;
+    const char *schema, *data;
+
+    schema =
+            "module test-data-hash {"
+            "  yang-version 1.1;"
+            "  namespace \"urn:tests:tdh\";"
+            "  prefix t;"
+            "  container c {"
+            "    leaf-list ll {"
+            "      type string;"
+            "    }"
+            "  }"
+            "}";
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* The number of <ll/> must be greater or equal to LYD_HT_MIN_ITEMS
+     * for the correct test run. It should guarantee the creation of a hash table.
+     */
+    assert_true(LYD_HT_MIN_ITEMS <= 4);
+    data =
+            "<c xmlns='urn:tests:tdh'>"
+            "  <ll/>"
+            "  <ll/>"
+            "  <ll/>"
+            "  <ll/>"
+            "</c>";
+
+    /* The run must not crash due to the assert that checks the hash. */
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    lyd_free_all(tree);
+}
+
+static void
+test_lyxp_vars(void **UNUSED(state))
+{
+    struct lyxp_var *vars;
+
+    /* Test free. */
+    vars = NULL;
+    lyxp_vars_free(vars);
+
+    /* Bad arguments for lyxp_vars_add(). */
+    assert_int_equal(LY_EINVAL, lyxp_vars_set(NULL, "var1", "val1"));
+    assert_int_equal(LY_EINVAL, lyxp_vars_set(&vars, NULL, "val1"));
+    assert_int_equal(LY_EINVAL, lyxp_vars_set(&vars, "var1", NULL));
+    lyxp_vars_free(vars);
+    vars = NULL;
+
+    /* Add one item. */
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var1", "val1"));
+    assert_int_equal(LY_ARRAY_COUNT(vars), 1);
+    assert_string_equal(vars[0].name, "var1");
+    assert_string_equal(vars[0].value, "val1");
+    lyxp_vars_free(vars);
+    vars = NULL;
+
+    /* Add three items. */
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var1", "val1"));
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var2", "val2"));
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var3", "val3"));
+    assert_int_equal(LY_ARRAY_COUNT(vars), 3);
+    assert_string_equal(vars[0].name, "var1");
+    assert_string_equal(vars[0].value, "val1");
+    assert_string_equal(vars[1].name, "var2");
+    assert_string_equal(vars[1].value, "val2");
+    assert_string_equal(vars[2].name, "var3");
+    assert_string_equal(vars[2].value, "val3");
+    lyxp_vars_free(vars);
+    vars = NULL;
+
+    /* Change value of a variable. */
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var1", "val1"));
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var2", "val2"));
+    assert_int_equal(LY_SUCCESS, lyxp_vars_set(&vars, "var1", "new_value"));
+    assert_string_equal(vars[0].name, "var1");
+    assert_string_equal(vars[0].value, "new_value");
+    assert_string_equal(vars[1].name, "var2");
+    assert_string_equal(vars[1].value, "val2");
+    lyxp_vars_free(vars);
+    vars = NULL;
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_compare, setup),
+        UTEST(test_compare_diff_ctx, setup),
+        UTEST(test_dup, setup),
+        UTEST(test_target, setup),
+        UTEST(test_list_pos, setup),
+        UTEST(test_first_sibling, setup),
+        UTEST(test_find_path, setup),
+        UTEST(test_data_hash, setup),
+        UTEST(test_lyxp_vars),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/data/test_validation.c b/tests/utests/data/test_validation.c
new file mode 100644
index 0000000..415e16a
--- /dev/null
+++ b/tests/utests/data/test_validation.c
@@ -0,0 +1,1460 @@
+/**
+ * @file test_validation.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for functions from validation.c
+ *
+ * Copyright (c) 2020 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "context.h"
+#include "in.h"
+#include "out.h"
+#include "parser_data.h"
+#include "printer_data.h"
+#include "tests_config.h"
+#include "tree_data_internal.h"
+#include "tree_schema.h"
+
+#define LYD_TREE_CREATE(INPUT, MODEL) \
+                CHECK_PARSE_LYD_PARAM(INPUT, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, MODEL)
+
+static void
+test_when(void **state)
+{
+    struct lyd_node *tree;
+    const char *schema =
+            "module a {\n"
+            "    namespace urn:tests:a;\n"
+            "    prefix a;\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    container cont {\n"
+            "        leaf a {\n"
+            "            when \"../../c = 'val_c'\";\n"
+            "            type string;\n"
+            "        }\n"
+            "        leaf b {\n"
+            "            type string;\n"
+            "        }\n"
+            "    }\n"
+            "    leaf c {\n"
+            "        when \"/cont/b = 'val_b'\";\n"
+            "        type string;\n"
+            "    }\n"
+            "}";
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    CHECK_PARSE_LYD_PARAM("<c xmlns=\"urn:tests:a\">hey</c>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("When condition \"/cont/b = 'val_b'\" not satisfied.", "Data location \"/a:c\".");
+
+    LYD_TREE_CREATE("<cont xmlns=\"urn:tests:a\"><b>val_b</b></cont><c xmlns=\"urn:tests:a\">hey</c>", tree);
+    CHECK_LYSC_NODE(tree->next->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "c", 0, LYS_LEAF, 0, 0, NULL, 1);
+    assert_int_equal(LYD_WHEN_TRUE, tree->next->flags);
+    lyd_free_all(tree);
+
+    LYD_TREE_CREATE("<cont xmlns=\"urn:tests:a\"><a>val</a><b>val_b</b></cont><c xmlns=\"urn:tests:a\">val_c</c>", tree);
+    CHECK_LYSC_NODE(lyd_child(tree)->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "a", 1, LYS_LEAF, 1, 0, NULL, 1);
+    assert_int_equal(LYD_WHEN_TRUE, lyd_child(tree)->flags);
+    CHECK_LYSC_NODE(tree->next->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "c", 0, LYS_LEAF, 0, 0, NULL, 1);
+    assert_int_equal(LYD_WHEN_TRUE, tree->next->flags);
+    lyd_free_all(tree);
+}
+
+static void
+test_mandatory_when(void **state)
+{
+    struct lyd_node *tree;
+    const char *schema =
+            "module a {\n"
+            "    namespace urn:tests:a;\n"
+            "    prefix a;\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    container cont {\n"
+            "        leaf a {\n"
+            "            type string;\n"
+            "        }\n"
+            "        leaf b {\n"
+            "            when \"../a = 'val_a'\";\n"
+            "            mandatory true;\n"
+            "            type string;\n"
+            "        }\n"
+            "    }\n"
+            "    leaf c {\n"
+            "        type string;\n"
+            "    }\n"
+            "    leaf d {\n"
+            "        when \"../c = 'val_c'\";\n"
+            "        mandatory true;\n"
+            "        type string;\n"
+            "    }\n"
+            "}";
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    CHECK_PARSE_LYD_PARAM("<d xmlns=\"urn:tests:a\">hey</d>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("When condition \"../c = 'val_c'\" not satisfied.", "Data location \"/a:d\".");
+
+    CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:a\"><b>hey</b></cont>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("When condition \"../a = 'val_a'\" not satisfied.", "Data location \"/a:cont/b\".");
+
+    LYD_TREE_CREATE("<c xmlns=\"urn:tests:a\">val_c</c><d xmlns=\"urn:tests:a\">hey</d>", tree);
+    CHECK_LYSC_NODE(tree->next->next->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_MAND_TRUE, 1, "d", 0, LYS_LEAF, 0, 0, NULL, 1);
+    assert_int_equal(LYD_WHEN_TRUE, tree->next->next->flags);
+    lyd_free_all(tree);
+
+    LYD_TREE_CREATE("<cont xmlns=\"urn:tests:a\"><a>val_a</a><b>hey</b></cont>", tree);
+    CHECK_LYSC_NODE(lyd_child(tree)->next->schema, NULL, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_MAND_TRUE, 1, "b", 0, LYS_LEAF, tree->schema, 0, NULL, 1);
+    assert_int_equal(LYD_WHEN_TRUE, lyd_child(tree)->next->flags);
+    lyd_free_all(tree);
+}
+
+static void
+test_type_incomplete_when(void **state)
+{
+    struct lys_module *mod;
+    struct lyd_node *tree;
+    const char *schema =
+            "module a {\n"
+            "    namespace urn:tests:a;\n"
+            "    prefix a;\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    container cont {\n"
+            "        when \"../c = 'val_c'\";\n"
+            "        leaf a {\n"
+            "            type leafref {\n"
+            "                path \"/a:c\";\n"
+            "            }\n"
+            "        }\n"
+            "        leaf b {\n"
+            "            type string;\n"
+            "        }\n"
+            "    }\n"
+            "    leaf c {\n"
+            "        type string;\n"
+            "    }\n"
+            "}";
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+
+    LYD_TREE_CREATE("<cont xmlns=\"urn:tests:a\"><a>val_c</a><b>val</b></cont><c xmlns=\"urn:tests:a\">val_c</c>", tree);
+
+    /* make the when false */
+    assert_int_equal(LY_SUCCESS, lyd_change_term(tree->next, "wrong-val"));
+
+    /* autodelete when with a leafref */
+    assert_int_equal(LY_SUCCESS, lyd_validate_module(&tree, mod, 0, NULL));
+    assert_string_equal(LYD_NAME(tree), "c");
+    assert_null(tree->next);
+
+    lyd_free_all(tree);
+}
+
+static void
+test_mandatory(void **state)
+{
+    struct lyd_node *tree;
+    const char *schema =
+            "module b {\n"
+            "    namespace urn:tests:b;\n"
+            "    prefix b;\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    choice choic {\n"
+            "        mandatory true;\n"
+            "        leaf a {\n"
+            "            type string;\n"
+            "        }\n"
+            "        case b {\n"
+            "            leaf l {\n"
+            "                type string;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "    leaf c {\n"
+            "        mandatory true;\n"
+            "        type string;\n"
+            "    }\n"
+            "    leaf d {\n"
+            "        type empty;\n"
+            "    }\n"
+            "}";
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    CHECK_PARSE_LYD_PARAM("<d xmlns=\"urn:tests:b\"/>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX_APPTAG("Mandatory choice \"choic\" data do not exist.", "Schema location \"/b:choic\".", "missing-choice");
+
+    CHECK_PARSE_LYD_PARAM("<l xmlns=\"urn:tests:b\">string</l><d xmlns=\"urn:tests:b\"/>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Mandatory node \"c\" instance does not exist.", "Schema location \"/b:c\".");
+
+    CHECK_PARSE_LYD_PARAM("<a xmlns=\"urn:tests:b\">string</a>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Mandatory node \"c\" instance does not exist.", "Schema location \"/b:c\".");
+
+    LYD_TREE_CREATE("<a xmlns=\"urn:tests:b\">string</a><c xmlns=\"urn:tests:b\">string2</c>", tree);
+    lyd_free_siblings(tree);
+}
+
+static void
+test_minmax(void **state)
+{
+    struct lyd_node *tree;
+    const char *schema =
+            "module c {\n"
+            "    namespace urn:tests:c;\n"
+            "    prefix c;\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    choice choic {\n"
+            "        leaf a {\n"
+            "            type string;\n"
+            "        }\n"
+            "        case b {\n"
+            "            leaf-list l {\n"
+            "                min-elements 3;\n"
+            "                type string;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "    list lt {\n"
+            "        max-elements 4;\n"
+            "        key \"k\";\n"
+            "        leaf k {\n"
+            "            type string;\n"
+            "        }\n"
+            "    }\n"
+            "    leaf d {\n"
+            "        type empty;\n"
+            "    }\n"
+            "}";
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    CHECK_PARSE_LYD_PARAM("<l xmlns=\"urn:tests:c\">mate</l>"
+            "<d xmlns=\"urn:tests:c\"/>",
+            LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX_APPTAG("Too few \"l\" instances.", "Schema location \"/c:choic/b/l\".", "too-few-elements");
+
+    CHECK_PARSE_LYD_PARAM("<l xmlns=\"urn:tests:c\">val1</l>"
+            "<l xmlns=\"urn:tests:c\">val2</l>",
+            LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX_APPTAG("Too few \"l\" instances.", "Schema location \"/c:choic/b/l\".", "too-few-elements");
+
+    LYD_TREE_CREATE("<l xmlns=\"urn:tests:c\">val1</l>"
+            "<l xmlns=\"urn:tests:c\">val2</l>"
+            "<l xmlns=\"urn:tests:c\">val3</l>", tree);
+    lyd_free_all(tree);
+
+    CHECK_PARSE_LYD_PARAM("<l xmlns=\"urn:tests:c\">val1</l>"
+            "<l xmlns=\"urn:tests:c\">val2</l>"
+            "<l xmlns=\"urn:tests:c\">val3</l>"
+            "<lt xmlns=\"urn:tests:c\"><k>val1</k></lt>"
+            "<lt xmlns=\"urn:tests:c\"><k>val2</k></lt>"
+            "<lt xmlns=\"urn:tests:c\"><k>val3</k></lt>"
+            "<lt xmlns=\"urn:tests:c\"><k>val4</k></lt>"
+            "<lt xmlns=\"urn:tests:c\"><k>val5</k></lt>"
+            "<lt xmlns=\"urn:tests:c\"><k>val6</k></lt>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX_APPTAG("Too many \"lt\" instances.", "Data location \"/c:lt[k='val5']\".",
+            "too-many-elements");
+}
+
+const char *schema_d =
+        "module d {\n"
+        "    namespace urn:tests:d;\n"
+        "    prefix d;\n"
+        "    yang-version 1.1;\n"
+        "\n"
+        "    list lt {\n"
+        "        key \"k\";\n"
+        "        unique \"l1\";\n"
+        "        leaf k {\n"
+        "            type string;\n"
+        "        }\n"
+        "        leaf l1 {\n"
+        "            type string;\n"
+        "        }\n"
+        "    }\n"
+        "    list lt2 {\n"
+        "        key \"k\";\n"
+        "        unique \"cont/l2 l4\";\n"
+        "        unique \"l5 l6\";\n"
+        "        leaf k {\n"
+        "            type string;\n"
+        "        }\n"
+        "        container cont {\n"
+        "            leaf l2 {\n"
+        "                type string;\n"
+        "            }\n"
+        "        }\n"
+        "        leaf l4 {\n"
+        "            type string;\n"
+        "        }\n"
+        "        leaf l5 {\n"
+        "            type string;\n"
+        "        }\n"
+        "        leaf l6 {\n"
+        "            type string;\n"
+        "        }\n"
+        "        list lt3 {\n"
+        "            key \"kk\";\n"
+        "            unique \"l3\";\n"
+        "            leaf kk {\n"
+        "                type string;\n"
+        "            }\n"
+        "            leaf l3 {\n"
+        "                type string;\n"
+        "            }\n"
+        "        }\n"
+        "    }\n"
+        "}";
+
+static void
+test_unique(void **state)
+{
+    struct lyd_node *tree;
+
+    UTEST_ADD_MODULE(schema_d, LYS_IN_YANG, NULL, NULL);
+
+    LYD_TREE_CREATE("<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val1</k>\n"
+            "    <l1>same</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val2</k>\n"
+            "</lt>", tree);
+    lyd_free_all(tree);
+
+    LYD_TREE_CREATE("<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val1</k>\n"
+            "    <l1>same</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val2</k>\n"
+            "    <l1>not-same</l1>\n"
+            "</lt>", tree);
+    lyd_free_all(tree);
+
+    CHECK_PARSE_LYD_PARAM("<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val1</k>\n"
+            "    <l1>same</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val2</k>\n"
+            "    <l1>same</l1>\n"
+            "</lt>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX_APPTAG("Unique data leaf(s) \"l1\" not satisfied in \"/d:lt[k='val1']\" and \"/d:lt[k='val2']\".",
+            "Data location \"/d:lt[k='val2']\".", "data-not-unique");
+
+    /* now try with more instances */
+    LYD_TREE_CREATE("<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val1</k>\n"
+            "    <l1>1</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val2</k>\n"
+            "    <l1>2</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val3</k>\n"
+            "    <l1>3</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val4</k>\n"
+            "    <l1>4</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val5</k>\n"
+            "    <l1>5</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val6</k>\n"
+            "    <l1>6</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val7</k>\n"
+            "    <l1>7</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val8</k>\n"
+            "    <l1>8</l1>\n"
+            "</lt>", tree);
+    lyd_free_all(tree);
+
+    LYD_TREE_CREATE("<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val1</k>\n"
+            "    <l1>1</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val2</k>\n"
+            "    <l1>2</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val3</k>\n"
+            "    <l1>3</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val4</k>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val5</k>\n"
+            "    <l1>5</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val6</k>\n"
+            "    <l1>6</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val7</k>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val8</k>\n"
+            "</lt>", tree);
+    lyd_free_all(tree);
+
+    CHECK_PARSE_LYD_PARAM("<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val1</k>\n"
+            "    <l1>1</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val2</k>\n"
+            "    <l1>2</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val3</k>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val4</k>\n"
+            "    <l1>4</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val5</k>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val6</k>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val7</k>\n"
+            "    <l1>2</l1>\n"
+            "</lt>\n"
+            "<lt xmlns=\"urn:tests:d\">\n"
+            "    <k>val8</k>\n"
+            "    <l1>8</l1>\n"
+            "</lt>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX_APPTAG("Unique data leaf(s) \"l1\" not satisfied in \"/d:lt[k='val7']\" and \"/d:lt[k='val2']\".",
+            "Data location \"/d:lt[k='val2']\".", "data-not-unique");
+}
+
+static void
+test_unique_nested(void **state)
+{
+    struct lyd_node *tree;
+
+    UTEST_ADD_MODULE(schema_d, LYS_IN_YANG, NULL, NULL);
+
+    /* nested list uniquest are compared only with instances in the same parent list instance */
+    LYD_TREE_CREATE("<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val1</k>\n"
+            "    <cont>\n"
+            "        <l2>1</l2>\n"
+            "    </cont>\n"
+            "    <l4>1</l4>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val2</k>\n"
+            "    <cont>\n"
+            "        <l2>2</l2>\n"
+            "    </cont>\n"
+            "    <l4>2</l4>\n"
+            "    <lt3>\n"
+            "        <kk>val1</kk>\n"
+            "        <l3>1</l3>\n"
+            "    </lt3>\n"
+            "    <lt3>\n"
+            "        <kk>val2</kk>\n"
+            "        <l3>2</l3>\n"
+            "    </lt3>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val3</k>\n"
+            "    <cont>\n"
+            "        <l2>3</l2>\n"
+            "    </cont>\n"
+            "    <l4>3</l4>\n"
+            "    <lt3>\n"
+            "        <kk>val1</kk>\n"
+            "        <l3>2</l3>\n"
+            "    </lt3>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val4</k>\n"
+            "    <cont>\n"
+            "        <l2>4</l2>\n"
+            "    </cont>\n"
+            "    <l4>4</l4>\n"
+            "    <lt3>\n"
+            "        <kk>val1</kk>\n"
+            "        <l3>3</l3>\n"
+            "    </lt3>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val5</k>\n"
+            "    <cont>\n"
+            "        <l2>5</l2>\n"
+            "    </cont>\n"
+            "    <l4>5</l4>\n"
+            "    <lt3>\n"
+            "        <kk>val1</kk>\n"
+            "        <l3>3</l3>\n"
+            "    </lt3>\n"
+            "</lt2>", tree);
+    lyd_free_all(tree);
+
+    CHECK_PARSE_LYD_PARAM("<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val1</k>\n"
+            "    <cont>\n"
+            "        <l2>1</l2>\n"
+            "    </cont>\n"
+            "    <l4>1</l4>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val2</k>\n"
+            "    <cont>\n"
+            "        <l2>2</l2>\n"
+            "    </cont>\n"
+            "    <lt3>\n"
+            "        <kk>val1</kk>\n"
+            "        <l3>1</l3>\n"
+            "    </lt3>\n"
+            "    <lt3>\n"
+            "        <kk>val2</kk>\n"
+            "        <l3>2</l3>\n"
+            "    </lt3>\n"
+            "    <lt3>\n"
+            "        <kk>val3</kk>\n"
+            "        <l3>1</l3>\n"
+            "    </lt3>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val3</k>\n"
+            "    <cont>\n"
+            "        <l2>3</l2>\n"
+            "    </cont>\n"
+            "    <l4>1</l4>\n"
+            "    <lt3>\n"
+            "        <kk>val1</kk>\n"
+            "        <l3>2</l3>\n"
+            "    </lt3>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val4</k>\n"
+            "    <cont>\n"
+            "        <l2>4</l2>\n"
+            "    </cont>\n"
+            "    <lt3>\n"
+            "        <kk>val1</kk>\n"
+            "        <l3>3</l3>\n"
+            "    </lt3>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val5</k>\n"
+            "    <cont>\n"
+            "        <l2>5</l2>\n"
+            "    </cont>\n"
+            "    <lt3>\n"
+            "        <kk>val1</kk>\n"
+            "        <l3>3</l3>\n"
+            "    </lt3>\n"
+            "</lt2>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX_APPTAG("Unique data leaf(s) \"l3\" not satisfied in \"/d:lt2[k='val2']/lt3[kk='val3']\" and "
+            "\"/d:lt2[k='val2']/lt3[kk='val1']\".",
+            "Data location \"/d:lt2[k='val2']/lt3[kk='val1']\".", "data-not-unique");
+
+    CHECK_PARSE_LYD_PARAM("<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val1</k>\n"
+            "    <cont>\n"
+            "        <l2>1</l2>\n"
+            "    </cont>\n"
+            "    <l4>1</l4>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val2</k>\n"
+            "    <cont>\n"
+            "        <l2>2</l2>\n"
+            "    </cont>\n"
+            "    <l4>2</l4>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val3</k>\n"
+            "    <cont>\n"
+            "        <l2>3</l2>\n"
+            "    </cont>\n"
+            "    <l4>3</l4>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val4</k>\n"
+            "    <cont>\n"
+            "        <l2>2</l2>\n"
+            "    </cont>\n"
+            "    <l4>2</l4>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val5</k>\n"
+            "    <cont>\n"
+            "        <l2>5</l2>\n"
+            "    </cont>\n"
+            "    <l4>5</l4>\n"
+            "</lt2>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX_APPTAG("Unique data leaf(s) \"cont/l2 l4\" not satisfied in \"/d:lt2[k='val4']\" and \"/d:lt2[k='val2']\".",
+            "Data location \"/d:lt2[k='val2']\".", "data-not-unique");
+
+    CHECK_PARSE_LYD_PARAM("<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val1</k>\n"
+            "    <cont>\n"
+            "        <l2>1</l2>\n"
+            "    </cont>\n"
+            "    <l4>1</l4>\n"
+            "    <l5>1</l5>\n"
+            "    <l6>1</l6>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val2</k>\n"
+            "    <cont>\n"
+            "        <l2>2</l2>\n"
+            "    </cont>\n"
+            "    <l4>1</l4>\n"
+            "    <l5>1</l5>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val3</k>\n"
+            "    <cont>\n"
+            "        <l2>3</l2>\n"
+            "    </cont>\n"
+            "    <l4>1</l4>\n"
+            "    <l5>3</l5>\n"
+            "    <l6>3</l6>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val4</k>\n"
+            "    <cont>\n"
+            "        <l2>4</l2>\n"
+            "    </cont>\n"
+            "    <l4>1</l4>\n"
+            "    <l6>1</l6>\n"
+            "</lt2>\n"
+            "<lt2 xmlns=\"urn:tests:d\">\n"
+            "    <k>val5</k>\n"
+            "    <cont>\n"
+            "        <l2>5</l2>\n"
+            "    </cont>\n"
+            "    <l4>1</l4>\n"
+            "    <l5>3</l5>\n"
+            "    <l6>3</l6>\n"
+            "</lt2>", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX_APPTAG("Unique data leaf(s) \"l5 l6\" not satisfied in \"/d:lt2[k='val5']\" and \"/d:lt2[k='val3']\".",
+            "Data location \"/d:lt2[k='val3']\".", "data-not-unique");
+}
+
+static void
+test_dup(void **state)
+{
+    struct lyd_node *tree;
+    const char *schema =
+            "module e {\n"
+            "    namespace urn:tests:e;\n"
+            "    prefix e;\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    choice choic {\n"
+            "        leaf a {\n"
+            "            type string;\n"
+            "        }\n"
+            "        case b {\n"
+            "            leaf-list l {\n"
+            "                type string;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "    list lt {\n"
+            "        key \"k\";\n"
+            "        leaf k {\n"
+            "            type string;\n"
+            "        }\n"
+            "    }\n"
+            "    leaf d {\n"
+            "        type uint32;\n"
+            "    }\n"
+            "    leaf-list ll {\n"
+            "        type string;\n"
+            "    }\n"
+            "    container cont {\n"
+            "        list lt {\n"
+            "            key \"k\";\n"
+            "            leaf k {\n"
+            "                type string;\n"
+            "            }\n"
+            "        }\n"
+            "        leaf d {\n"
+            "            type uint32;\n"
+            "        }\n"
+            "        leaf-list ll {\n"
+            "            type string;\n"
+            "        }\n"
+            "        leaf-list ll2 {\n"
+            "            type enumeration {\n"
+            "                enum one;\n"
+            "                enum two;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}";
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    CHECK_PARSE_LYD_PARAM("<d xmlns=\"urn:tests:e\">25</d><d xmlns=\"urn:tests:e\">50</d>",
+            LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Duplicate instance of \"d\".", "Data location \"/e:d\".");
+
+    CHECK_PARSE_LYD_PARAM("<lt xmlns=\"urn:tests:e\"><k>A</k></lt>"
+            "<lt xmlns=\"urn:tests:e\"><k>B</k></lt>"
+            "<lt xmlns=\"urn:tests:e\"><k>A</k></lt>",
+            LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Duplicate instance of \"lt\".", "Data location \"/e:lt[k='A']\".");
+
+    CHECK_PARSE_LYD_PARAM("<ll xmlns=\"urn:tests:e\">A</ll>"
+            "<ll xmlns=\"urn:tests:e\">B</ll>"
+            "<ll xmlns=\"urn:tests:e\">B</ll>",
+            LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Duplicate instance of \"ll\".", "Data location \"/e:ll[.='B']\".");
+
+    CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:e\"></cont><cont xmlns=\"urn:tests:e\"/>",
+            LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Duplicate instance of \"cont\".", "Data location \"/e:cont\".");
+
+    /* same tests again but using hashes */
+    CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:e\"><d>25</d><d>50</d><ll>1</ll><ll>2</ll><ll>3</ll><ll>4</ll></cont>",
+            LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Duplicate instance of \"d\".", "Data location \"/e:cont/d\", line number 1.");
+
+    CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:e\"><ll>1</ll><ll>2</ll><ll>3</ll><ll>4</ll>"
+            "<lt><k>a</k></lt>"
+            "<lt><k>b</k></lt>"
+            "<lt><k>c</k></lt>"
+            "<lt><k>d</k></lt>"
+            "<lt><k>c</k></lt></cont>",
+            LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Duplicate instance of \"lt\".", "Data location \"/e:cont/lt[k='c']\", line number 1.");
+
+    CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:e\"><ll>1</ll><ll>2</ll><ll>3</ll><ll>4</ll>"
+            "<ll>a</ll><ll>b</ll><ll>c</ll><ll>d</ll><ll>d</ll></cont>",
+            LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Duplicate instance of \"ll\".", "Data location \"/e:cont/ll[.='d']\", line number 1.");
+
+    /* cases */
+    CHECK_PARSE_LYD_PARAM("<l xmlns=\"urn:tests:e\">a</l>"
+            "<l xmlns=\"urn:tests:e\">b</l>"
+            "<l xmlns=\"urn:tests:e\">c</l>"
+            "<l xmlns=\"urn:tests:e\">b</l>",
+            LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Duplicate instance of \"l\".", "Data location \"/e:l[.='b']\".");
+
+    CHECK_PARSE_LYD_PARAM("<l xmlns=\"urn:tests:e\">a</l><l xmlns=\"urn:tests:e\">b</l>"
+            "<l xmlns=\"urn:tests:e\">c</l>"
+            "<a xmlns=\"urn:tests:e\">aa</a>",
+            LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Data for both cases \"a\" and \"b\" exist.", "Schema location \"/e:choic\".");
+}
+
+static void
+test_defaults(void **state)
+{
+    struct lyd_node *tree, *node, *diff;
+    struct lys_module *mod;
+    const char *schema =
+            "module f {\n"
+            "    namespace urn:tests:f;\n"
+            "    prefix f;\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    choice choic {\n"
+            "        default \"c\";\n"
+            "        leaf a {\n"
+            "            type string;\n"
+            "        }\n"
+            "        case b {\n"
+            "            leaf l {\n"
+            "                type string;\n"
+            "            }\n"
+            "        }\n"
+            "        case c {\n"
+            "            leaf-list ll1 {\n"
+            "                type string;\n"
+            "                default \"def1\";\n"
+            "                default \"def2\";\n"
+            "                default \"def3\";\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "    leaf d {\n"
+            "        type uint32;\n"
+            "        default 15;\n"
+            "    }\n"
+            "    leaf dd {\n"
+            "        type uint32;\n"
+            "        when '../d = 666';\n"
+            "        default 15;\n"
+            "    }\n"
+            "    leaf-list ll2 {\n"
+            "        type string;\n"
+            "        default \"dflt1\";\n"
+            "        default \"dflt2\";\n"
+            "    }\n"
+            "    container cont {\n"
+            "        choice choic {\n"
+            "            default \"c\";\n"
+            "            leaf a {\n"
+            "                type string;\n"
+            "            }\n"
+            "            case b {\n"
+            "                leaf l {\n"
+            "                    type string;\n"
+            "                }\n"
+            "            }\n"
+            "            case c {\n"
+            "                leaf-list ll1 {\n"
+            "                    type string;\n"
+            "                    default \"def1\";\n"
+            "                    default \"def2\";\n"
+            "                    default \"def3\";\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "        leaf d {\n"
+            "            type uint32;\n"
+            "            default 15;\n"
+            "        }\n"
+            "        leaf dd {\n"
+            "            type uint32;\n"
+            "            when '../d = 666';\n"
+            "            default 15;\n"
+            "        }\n"
+            "        leaf-list ll2 {\n"
+            "            type string;\n"
+            "            default \"dflt1\";\n"
+            "            default \"dflt2\";\n"
+            "        }\n"
+            "    }\n"
+            "}";
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "ietf-netconf-with-defaults", "2011-06-01", NULL));\
+
+    /* get defaults */
+    tree = NULL;
+    assert_int_equal(lyd_validate_module(&tree, mod, 0, &diff), LY_SUCCESS);
+    assert_non_null(tree);
+    assert_non_null(diff);
+
+    /* check all defaults exist */
+    CHECK_LYD_STRING_PARAM(tree,
+            "<ll1 xmlns=\"urn:tests:f\" xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def1</ll1>\n"
+            "<ll1 xmlns=\"urn:tests:f\" xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def2</ll1>\n"
+            "<ll1 xmlns=\"urn:tests:f\" xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def3</ll1>\n"
+            "<d xmlns=\"urn:tests:f\" xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">15</d>\n"
+            "<ll2 xmlns=\"urn:tests:f\" xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt1</ll2>\n"
+            "<ll2 xmlns=\"urn:tests:f\" xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt2</ll2>\n"
+            "<cont xmlns=\"urn:tests:f\">\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def1</ll1>\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def2</ll1>\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def3</ll1>\n"
+            "  <d xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">15</d>\n"
+            "  <ll2 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt1</ll2>\n"
+            "  <ll2 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt2</ll2>\n"
+            "</cont>\n",
+            LYD_XML, LYD_PRINT_WD_IMPL_TAG | LYD_PRINT_WITHSIBLINGS);
+
+    /* check diff */
+    CHECK_LYD_STRING_PARAM(diff,
+            "<ll1 xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"create\">def1</ll1>\n"
+            "<ll1 xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"create\">def2</ll1>\n"
+            "<ll1 xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"create\">def3</ll1>\n"
+            "<d xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"create\">15</d>\n"
+            "<ll2 xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"create\">dflt1</ll2>\n"
+            "<ll2 xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"create\">dflt2</ll2>\n"
+            "<cont xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"create\">\n"
+            "  <ll1 yang:operation=\"create\">def1</ll1>\n"
+            "  <ll1 yang:operation=\"create\">def2</ll1>\n"
+            "  <ll1 yang:operation=\"create\">def3</ll1>\n"
+            "  <d yang:operation=\"create\">15</d>\n"
+            "  <ll2 yang:operation=\"create\">dflt1</ll2>\n"
+            "  <ll2 yang:operation=\"create\">dflt2</ll2>\n"
+            "</cont>\n",
+            LYD_XML, LYD_PRINT_WD_ALL | LYD_PRINT_WITHSIBLINGS);
+    lyd_free_all(diff);
+
+    /* create another explicit case and validate */
+    assert_int_equal(lyd_new_term(NULL, mod, "l", "value", 0, &node), LY_SUCCESS);
+    assert_int_equal(lyd_insert_sibling(tree, node, &tree), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&tree, UTEST_LYCTX, LYD_VALIDATE_PRESENT, &diff), LY_SUCCESS);
+
+    /* check data tree */
+    CHECK_LYD_STRING_PARAM(tree,
+            "<l xmlns=\"urn:tests:f\">value</l>\n"
+            "<d xmlns=\"urn:tests:f\" xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">15</d>\n"
+            "<ll2 xmlns=\"urn:tests:f\" xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt1</ll2>\n"
+            "<ll2 xmlns=\"urn:tests:f\" xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt2</ll2>\n"
+            "<cont xmlns=\"urn:tests:f\">\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def1</ll1>\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def2</ll1>\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def3</ll1>\n"
+            "  <d xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">15</d>\n"
+            "  <ll2 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt1</ll2>\n"
+            "  <ll2 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt2</ll2>\n"
+            "</cont>\n",
+            LYD_XML, LYD_PRINT_WD_IMPL_TAG | LYD_PRINT_WITHSIBLINGS);
+
+    /* check diff */
+    CHECK_LYD_STRING_PARAM(diff,
+            "<ll1 xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"delete\">def1</ll1>\n"
+            "<ll1 xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"delete\">def2</ll1>\n"
+            "<ll1 xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"delete\">def3</ll1>\n",
+            LYD_XML, LYD_PRINT_WD_ALL | LYD_PRINT_WITHSIBLINGS);
+    lyd_free_all(diff);
+
+    /* create explicit leaf-list and leaf and validate */
+    assert_int_equal(lyd_new_term(NULL, mod, "d", "15", 0, &node), LY_SUCCESS);
+    assert_int_equal(lyd_insert_sibling(tree, node, &tree), LY_SUCCESS);
+    assert_int_equal(lyd_new_term(NULL, mod, "ll2", "dflt2", 0, &node), LY_SUCCESS);
+    assert_int_equal(lyd_insert_sibling(tree, node, &tree), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&tree, UTEST_LYCTX, LYD_VALIDATE_PRESENT, &diff), LY_SUCCESS);
+
+    /* check data tree */
+    CHECK_LYD_STRING_PARAM(tree,
+            "<l xmlns=\"urn:tests:f\">value</l>\n"
+            "<d xmlns=\"urn:tests:f\">15</d>\n"
+            "<ll2 xmlns=\"urn:tests:f\">dflt2</ll2>\n"
+            "<cont xmlns=\"urn:tests:f\">\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def1</ll1>\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def2</ll1>\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def3</ll1>\n"
+            "  <d xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">15</d>\n"
+            "  <ll2 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt1</ll2>\n"
+            "  <ll2 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt2</ll2>\n"
+            "</cont>\n",
+            LYD_XML, LYD_PRINT_WD_IMPL_TAG | LYD_PRINT_WITHSIBLINGS);
+
+    /* check diff */
+    CHECK_LYD_STRING_PARAM(diff,
+            "<d xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"delete\">15</d>\n"
+            "<ll2 xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"delete\">dflt1</ll2>\n"
+            "<ll2 xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"delete\">dflt2</ll2>\n",
+            LYD_XML, LYD_PRINT_WD_ALL | LYD_PRINT_WITHSIBLINGS);
+    lyd_free_all(diff);
+
+    /* create first explicit container, which should become implicit */
+    assert_int_equal(lyd_new_inner(NULL, mod, "cont", 0, &node), LY_SUCCESS);
+    assert_int_equal(lyd_insert_sibling(tree, node, &tree), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&tree, UTEST_LYCTX, LYD_VALIDATE_PRESENT, &diff), LY_SUCCESS);
+
+    /* check data tree */
+    CHECK_LYD_STRING_PARAM(tree,
+            "<l xmlns=\"urn:tests:f\">value</l>\n"
+            "<d xmlns=\"urn:tests:f\">15</d>\n"
+            "<ll2 xmlns=\"urn:tests:f\">dflt2</ll2>\n"
+            "<cont xmlns=\"urn:tests:f\">\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def1</ll1>\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def2</ll1>\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def3</ll1>\n"
+            "  <d xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">15</d>\n"
+            "  <ll2 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt1</ll2>\n"
+            "  <ll2 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt2</ll2>\n"
+            "</cont>\n",
+            LYD_XML, LYD_PRINT_WD_IMPL_TAG | LYD_PRINT_WITHSIBLINGS);
+    /* check diff */
+    assert_null(diff);
+
+    /* create second explicit container, which should become implicit, so the first tree node should be removed */
+    assert_int_equal(lyd_new_inner(NULL, mod, "cont", 0, &node), LY_SUCCESS);
+    assert_int_equal(lyd_insert_sibling(tree, node, &tree), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&tree, UTEST_LYCTX, LYD_VALIDATE_PRESENT, &diff), LY_SUCCESS);
+
+    /* check data tree */
+    CHECK_LYD_STRING_PARAM(tree,
+            "<l xmlns=\"urn:tests:f\">value</l>\n"
+            "<d xmlns=\"urn:tests:f\">15</d>\n"
+            "<ll2 xmlns=\"urn:tests:f\">dflt2</ll2>\n"
+            "<cont xmlns=\"urn:tests:f\">\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def1</ll1>\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def2</ll1>\n"
+            "  <ll1 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">def3</ll1>\n"
+            "  <d xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">15</d>\n"
+            "  <ll2 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt1</ll2>\n"
+            "  <ll2 xmlns:ncwd=\"urn:ietf:params:xml:ns:yang:ietf-netconf-with-defaults\" ncwd:default=\"true\">dflt2</ll2>\n"
+            "</cont>\n",
+            LYD_XML, LYD_PRINT_WD_IMPL_TAG | LYD_PRINT_WITHSIBLINGS);
+    /* check diff */
+    assert_null(diff);
+
+    /* similar changes for nested defaults */
+    assert_int_equal(lyd_new_term(tree->prev, NULL, "ll1", "def3", 0, NULL), LY_SUCCESS);
+    assert_int_equal(lyd_new_term(tree->prev, NULL, "d", "5", 0, NULL), LY_SUCCESS);
+    assert_int_equal(lyd_new_term(tree->prev, NULL, "ll2", "non-dflt", 0, NULL), LY_SUCCESS);
+    assert_int_equal(lyd_validate_all(&tree, UTEST_LYCTX, LYD_VALIDATE_PRESENT, &diff), LY_SUCCESS);
+
+    /* check data tree */
+    CHECK_LYD_STRING_PARAM(tree,
+            "<l xmlns=\"urn:tests:f\">value</l>\n"
+            "<d xmlns=\"urn:tests:f\">15</d>\n"
+            "<ll2 xmlns=\"urn:tests:f\">dflt2</ll2>\n"
+            "<cont xmlns=\"urn:tests:f\">\n"
+            "  <ll1>def3</ll1>\n"
+            "  <d>5</d>\n"
+            "  <ll2>non-dflt</ll2>\n"
+            "</cont>\n",
+            LYD_XML, LYD_PRINT_WITHSIBLINGS);
+
+    /* check diff */
+    CHECK_LYD_STRING_PARAM(diff,
+            "<cont xmlns=\"urn:tests:f\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"none\">\n"
+            "  <ll1 yang:operation=\"delete\">def1</ll1>\n"
+            "  <ll1 yang:operation=\"delete\">def2</ll1>\n"
+            "  <ll1 yang:operation=\"delete\">def3</ll1>\n"
+            "  <d yang:operation=\"delete\">15</d>\n"
+            "  <ll2 yang:operation=\"delete\">dflt1</ll2>\n"
+            "  <ll2 yang:operation=\"delete\">dflt2</ll2>\n"
+            "</cont>\n",
+            LYD_XML, LYD_PRINT_WD_ALL | LYD_PRINT_WITHSIBLINGS);
+    lyd_free_all(diff);
+    lyd_free_all(tree);
+
+    /* check data tree - when enabled node */
+    CHECK_PARSE_LYD_PARAM("<d xmlns=\"urn:tests:f\">666</d><cont xmlns=\"urn:tests:f\"><d>666</d></cont>",
+            LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    CHECK_LYD_STRING_PARAM(tree,
+            "<ll1 xmlns=\"urn:tests:f\">def1</ll1>\n"
+            "<ll1 xmlns=\"urn:tests:f\">def2</ll1>\n"
+            "<ll1 xmlns=\"urn:tests:f\">def3</ll1>\n"
+            "<d xmlns=\"urn:tests:f\">666</d>\n"
+            "<dd xmlns=\"urn:tests:f\">15</dd>\n"
+            "<ll2 xmlns=\"urn:tests:f\">dflt1</ll2>\n"
+            "<ll2 xmlns=\"urn:tests:f\">dflt2</ll2>\n"
+            "<cont xmlns=\"urn:tests:f\">\n"
+            "  <ll1>def1</ll1>\n"
+            "  <ll1>def2</ll1>\n"
+            "  <ll1>def3</ll1>\n"
+            "  <d>666</d>\n"
+            "  <dd>15</dd>\n"
+            "  <ll2>dflt1</ll2>\n"
+            "  <ll2>dflt2</ll2>\n"
+            "</cont>\n",
+            LYD_XML, LYD_PRINT_WD_ALL | LYD_PRINT_WITHSIBLINGS);
+    lyd_free_all(tree);
+}
+
+static void
+test_state(void **state)
+{
+    const char *data;
+    struct lyd_node *tree;
+    const char *schema =
+            "module h {\n"
+            "    namespace urn:tests:h;\n"
+            "    prefix h;\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    container cont {\n"
+            "        container cont2 {\n"
+            "            config false;\n"
+            "            leaf l {\n"
+            "                type string;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}";
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    data = "<cont xmlns=\"urn:tests:h\">\n"
+            "  <cont2>\n"
+            "    <l>val</l>\n"
+            "  </cont2>\n"
+            "</cont>\n";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_NO_STATE, 0, LY_EVALID, tree);
+    CHECK_LOG_CTX("Unexpected data state node \"cont2\" found.",
+            "Data location \"/h:cont/cont2\", line number 3.");
+
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY, 0, LY_SUCCESS, tree);
+    assert_int_equal(LY_EVALID, lyd_validate_all(&tree, NULL, LYD_VALIDATE_PRESENT | LYD_VALIDATE_NO_STATE, NULL));
+    CHECK_LOG_CTX("Unexpected data state node \"cont2\" found.",
+            "Data location \"/h:cont/cont2\".");
+    lyd_free_all(tree);
+}
+
+static void
+test_must(void **state)
+{
+    struct lyd_node *tree;
+    const char *schema =
+            "module i {\n"
+            "    namespace urn:tests:i;\n"
+            "    prefix i;\n"
+            "    yang-version 1.1;\n"
+            "\n"
+            "    container cont {\n"
+            "        leaf l {\n"
+            "            type string;\n"
+            "        }\n"
+            "        leaf l2 {\n"
+            "            must \"../l = 'right'\";\n"
+            "            type string;\n"
+            "        }\n"
+            "        leaf l3 {\n"
+            "            must \"../l = 'left'\" {\n"
+            "                error-app-tag \"not-left\";\n"
+            "                error-message \"l leaf is not left\";\n"
+            "            }\n"
+            "            type string;\n"
+            "        }\n"
+            "    }\n"
+            "}";
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:i\">\n"
+            "  <l>wrong</l>\n"
+            "  <l2>val</l2>\n"
+            "</cont>\n", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX_APPTAG("Must condition \"../l = 'right'\" not satisfied.",
+            "Data location \"/i:cont/l2\".", "must-violation");
+
+    LYD_TREE_CREATE("<cont xmlns=\"urn:tests:i\">\n"
+            "  <l>right</l>\n"
+            "  <l2>val</l2>\n"
+            "</cont>\n", tree);
+    lyd_free_all(tree);
+
+    CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:i\">\n"
+            "  <l>wrong</l>\n"
+            "  <l3>val</l3>\n"
+            "</cont>\n", LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX_APPTAG("l leaf is not left", "Data location \"/i:cont/l3\".", "not-left");
+}
+
+const char *schema_j =
+        "module j {\n"
+        "    namespace urn:tests:j;\n"
+        "    prefix j;\n"
+        "    yang-version 1.1;\n"
+        "\n"
+        "    feature feat1;\n"
+        "\n"
+        "    container cont {\n"
+        "        must \"false()\";\n"
+        "        list l1 {\n"
+        "            key \"k\";\n"
+        "            leaf k {\n"
+        "                type string;\n"
+        "            }\n"
+        "            action act {\n"
+        "                if-feature feat1;\n"
+        "                input {\n"
+        "                    must \"../../lf1 = 'true'\";\n"
+        "                    leaf lf2 {\n"
+        "                        type leafref {\n"
+        "                            path /lf3;\n"
+        "                        }\n"
+        "                    }\n"
+        "                }\n"
+        "                output {\n"
+        "                    must \"../../lf1 = 'true2'\";\n"
+        "                    leaf lf2 {\n"
+        "                        type leafref {\n"
+        "                            path /lf4;\n"
+        "                        }\n"
+        "                    }\n"
+        "                }\n"
+        "            }\n"
+        "        }\n"
+        "\n"
+        "        leaf lf1 {\n"
+        "            type string;\n"
+        "        }\n"
+        "    }\n"
+        "\n"
+        "    leaf lf3 {\n"
+        "        type string;\n"
+        "    }\n"
+        "\n"
+        "    leaf lf4 {\n"
+        "        type string;\n"
+        "    }\n"
+        "}";
+const char *feats_j[] = {"feat1", NULL};
+
+static void
+test_action(void **state)
+{
+    struct ly_in *in;
+    struct lyd_node *tree, *op_tree;
+
+    UTEST_ADD_MODULE(schema_j, LYS_IN_YANG, feats_j, NULL);
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(
+            "<cont xmlns=\"urn:tests:j\">\n"
+            "  <l1>\n"
+            "    <k>val1</k>\n"
+            "    <act>\n"
+            "      <lf2>target</lf2>\n"
+            "    </act>\n"
+            "  </l1>\n"
+            "</cont>\n", &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_RPC_YANG, &op_tree, NULL));
+    assert_non_null(op_tree);
+
+    /* missing leafref */
+    assert_int_equal(LY_EVALID, lyd_validate_op(op_tree, NULL, LYD_TYPE_RPC_YANG, NULL));
+    CHECK_LOG_CTX("Invalid leafref value \"target\" - no target instance \"/lf3\" with the same value.",
+            "Data location \"/j:cont/l1[k='val1']/act/lf2\".");
+    ly_in_free(in, 0);
+
+    CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:j\">\n"
+            "  <lf1>not true</lf1>\n"
+            "</cont>\n"
+            "<lf3 xmlns=\"urn:tests:j\">target</lf3>\n",
+            LYD_XML, LYD_PARSE_ONLY, 0, LY_SUCCESS, tree);
+
+    /* input must false */
+    assert_int_equal(LY_EVALID, lyd_validate_op(op_tree, tree, LYD_TYPE_RPC_YANG, NULL));
+    CHECK_LOG_CTX("Must condition \"../../lf1 = 'true'\" not satisfied.",
+            "Data location \"/j:cont/l1[k='val1']/act\".");
+
+    lyd_free_all(tree);
+    CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:j\">\n"
+            "  <lf1>true</lf1>\n"
+            "</cont>\n"
+            "<lf3 xmlns=\"urn:tests:j\">target</lf3>\n",
+            LYD_XML, LYD_PARSE_ONLY, 0, LY_SUCCESS, tree);
+
+    /* success */
+    assert_int_equal(LY_SUCCESS, lyd_validate_op(op_tree, tree, LYD_TYPE_RPC_YANG, NULL));
+
+    lyd_free_tree(op_tree);
+    lyd_free_siblings(tree);
+}
+
+static void
+test_rpc(void **state)
+{
+    const char *schema, *data;
+    struct ly_in *in;
+    struct lyd_node *tree;
+
+    /* Testing constraint violation in RPC. */
+    schema =
+            "module val-str {\n"
+            "  namespace \"urn:vstr\";\n"
+            "  prefix v;\n"
+            "\n"
+            "  rpc modify-user-password {\n"
+            "    input {\n"
+            "      leaf old-password {\n"
+            "        type string {\n"
+            "          length \"4..8\";\n"
+            "        }\n"
+            "      }\n"
+            "      leaf new-password {\n"
+            "        type string {\n"
+            "          length \"4..8\";\n"
+            "        }\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    data =
+            "<modify-user-password xmlns=\"urn:vstr\">\n"
+            "   <old-password>12345</old-password>\n"
+            "   <new-password>123</new-password>\n"
+            "</modify-user-password>";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_EVALID, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_RPC_YANG, &tree, NULL));
+    CHECK_LOG_CTX("Unsatisfied length - string \"123\" length is not allowed.",
+            "Data location \"/val-str:modify-user-password/new-password\", line number 3.");
+    ly_in_free(in, 0);
+}
+
+static void
+test_reply(void **state)
+{
+    struct ly_in *in;
+    struct lyd_node *tree, *op_tree;
+
+    UTEST_ADD_MODULE(schema_j, LYS_IN_YANG, feats_j, NULL);
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(
+            "<cont xmlns=\"urn:tests:j\">\n"
+            "  <l1>\n"
+            "    <k>val1</k>\n"
+            "    <act>\n"
+            "      <lf2>target</lf2>\n"
+            "    </act>\n"
+            "  </l1>\n"
+            "</cont>\n", &in));
+    assert_int_equal(LY_SUCCESS, lyd_parse_op(UTEST_LYCTX, NULL, in, LYD_XML, LYD_TYPE_REPLY_YANG, &op_tree, NULL));
+    assert_non_null(op_tree);
+    ly_in_free(in, 0);
+
+    /* missing leafref */
+    assert_int_equal(LY_EVALID, lyd_validate_op(op_tree, NULL, LYD_TYPE_REPLY_YANG, NULL));
+    CHECK_LOG_CTX("Invalid leafref value \"target\" - no target instance \"/lf4\" with the same value.",
+            "Data location \"/j:cont/l1[k='val1']/act/lf2\".");
+
+    CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:j\">\n"
+            "  <lf1>not true</lf1>\n"
+            "</cont>\n"
+            "<lf4 xmlns=\"urn:tests:j\">target</lf4>\n",
+            LYD_XML, LYD_PARSE_ONLY, 0, LY_SUCCESS, tree);
+
+    /* input must false */
+    assert_int_equal(LY_EVALID, lyd_validate_op(op_tree, tree, LYD_TYPE_REPLY_YANG, NULL));
+    CHECK_LOG_CTX("Must condition \"../../lf1 = 'true2'\" not satisfied.", "Data location \"/j:cont/l1[k='val1']/act\".");
+
+    lyd_free_all(tree);
+    CHECK_PARSE_LYD_PARAM("<cont xmlns=\"urn:tests:j\">\n"
+            "  <lf1>true2</lf1>\n"
+            "</cont>\n"
+            "<lf4 xmlns=\"urn:tests:j\">target</lf4>\n",
+            LYD_XML, LYD_PARSE_ONLY, 0, LY_SUCCESS, tree);
+
+    /* success */
+    assert_int_equal(LY_SUCCESS, lyd_validate_op(op_tree, tree, LYD_TYPE_REPLY_YANG, NULL));
+
+    lyd_free_tree(op_tree);
+    lyd_free_all(tree);
+}
+
+static void
+test_case(void **state)
+{
+    struct lyd_node *tree;
+    const char *schema =
+            "module k {\n"
+            "  namespace urn:tests:k;\n"
+            "  prefix k;\n"
+            "  yang-version 1.1;\n"
+            "\n"
+            "  container ch {\n"
+            "    choice a0 {\n"
+            "      case v0 {\n"
+            "        leaf g0 {\n"
+            "          type string;\n"
+            "        }\n"
+            "      }\n"
+            "      case v1 {\n"
+            "        choice a1 {\n"
+            "          case r0 {\n"
+            "            leaf g1 {\n"
+            "              type string;\n"
+            "            }\n"
+            "          }\n"
+            "          case r1 {\n"
+            "            leaf g2 {\n"
+            "              type string;\n"
+            "            }\n"
+            "            leaf g3 {\n"
+            "              type string;\n"
+            "            }\n"
+            "          }\n"
+            "          case r2 {\n"
+            "            leaf g4 {\n"
+            "              type string;\n"
+            "            }\n"
+            "          }\n"
+            "        }\n"
+            "      }\n"
+            "      case v2 {\n"
+            "        choice a2 {\n"
+            "          case y0 {\n"
+            "            leaf g5 {\n"
+            "              type string;\n"
+            "            }\n"
+            "          }\n"
+            "          case y1 {\n"
+            "            leaf g6 {\n"
+            "              type string;\n"
+            "            }\n"
+            "            leaf g7 {\n"
+            "              type string;\n"
+            "            }\n"
+            "          }\n"
+            "          case y2 {\n"
+            "            leaf g8 {\n"
+            "              type string;\n"
+            "            }\n"
+            "          }\n"
+            "        }\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "}";
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    CHECK_PARSE_LYD_PARAM(
+            "{\n"
+            "  \"k:ch\": {\n"
+            "    \"g0\": \"value_g0\",\n"
+            "    \"g7\": \"value_g7\"\n"
+            "  }\n"
+            "}\n", LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Data for both cases \"v0\" and \"v2\" exist.",
+            "Data location \"/k:ch\", line number 5.");
+
+    CHECK_PARSE_LYD_PARAM(
+            "{\n"
+            "  \"k:ch\": {\n"
+            "    \"g7\": \"value_g7\",\n"
+            "    \"g0\": \"value_g0\"\n"
+            "  }\n"
+            "}\n", LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Data for both cases \"v0\" and \"v2\" exist.",
+            "Data location \"/k:ch\", line number 5.");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_when),
+        UTEST(test_mandatory),
+        UTEST(test_mandatory_when),
+        UTEST(test_type_incomplete_when),
+        UTEST(test_minmax),
+        UTEST(test_unique),
+        UTEST(test_unique_nested),
+        UTEST(test_dup),
+        UTEST(test_defaults),
+        UTEST(test_state),
+        UTEST(test_must),
+        UTEST(test_action),
+        UTEST(test_rpc),
+        UTEST(test_reply),
+        UTEST(test_case),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/extensions/test_metadata.c b/tests/utests/extensions/test_metadata.c
new file mode 100644
index 0000000..39d29be
--- /dev/null
+++ b/tests/utests/extensions/test_metadata.c
@@ -0,0 +1,211 @@
+/**
+ * @file test_metadata.c
+ * @author Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for Metadata extension (annotation) support
+ *
+ * Copyright (c) 2019 - 2022 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "libyang.h"
+#include "plugins_exts.h"
+#include "plugins_exts/metadata.h"
+
+static void
+test_yang(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_ext_instance *e;
+    const char *units;
+
+    const char *data = "module a {yang-version 1.1; namespace urn:tests:extensions:metadata:a; prefix a;"
+            "import ietf-yang-metadata {prefix md;}"
+            "feature f;"
+            "md:annotation x {"
+            "  description \"test\";"
+            "  if-feature f;"
+            "  reference \"test\";"
+            "  status \"current\";"
+            "  type uint8;"
+            "  units meters;"
+            "}}";
+    const char *feats[] = {"f", NULL};
+
+    UTEST_ADD_MODULE(data, LYS_IN_YANG, feats, &mod);
+    assert_int_equal(1, LY_ARRAY_COUNT(mod->compiled->exts));
+    e = &mod->compiled->exts[0];
+    assert_non_null(e->compiled);
+    assert_non_null(e->substmts);
+    lyplg_ext_get_storage(e, LY_STMT_UNITS, sizeof units, (const void **)&units);
+    assert_string_equal("meters", units);
+
+    /* invalid */
+    /* missing mandatory type substatement */
+    data = "module aa {yang-version 1.1; namespace urn:tests:extensions:metadata:aa; prefix aa;"
+            "import ietf-yang-metadata {prefix md;}"
+            "md:annotation aa;}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 metadata v1\": Missing mandatory keyword \"type\" as a child of \"md:annotation aa\".",
+            "/aa:{extension='md:annotation'}/aa");
+
+    /* not allowed substatement */
+    data = "module aa {yang-version 1.1; namespace urn:tests:extensions:metadata:aa; prefix aa;"
+            "import ietf-yang-metadata {prefix md;}"
+            "md:annotation aa {default x;}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid keyword \"default\" as a child of \"md:annotation aa\" extension instance.",
+            "/aa:{extension='md:annotation'}/aa");
+
+    /* invalid cardinality of units substatement */
+    data = "module aa {yang-version 1.1; namespace urn:tests:extensions:metadata:aa; prefix aa;"
+            "import ietf-yang-metadata {prefix md;}"
+            "md:annotation aa {type string; units x; units y;}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate keyword \"units\".",
+            "/aa:{extension='md:annotation'}/aa");
+
+    /* invalid cardinality of status substatement */
+    data = "module aa {yang-version 1.1; namespace urn:tests:extensions:metadata:aa; prefix aa;"
+            "import ietf-yang-metadata {prefix md;}"
+            "md:annotation aa {type string; status current; status obsolete;}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate keyword \"status\".",
+            "/aa:{extension='md:annotation'}/aa");
+
+    /* invalid cardinality of status substatement */
+    data = "module aa {yang-version 1.1; namespace urn:tests:extensions:metadata:aa; prefix aa;"
+            "import ietf-yang-metadata {prefix md;}"
+            "md:annotation aa {type string; type uint8;}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate keyword \"type\".",
+            "/aa:{extension='md:annotation'}/aa");
+
+    /* duplication of the same annotation */
+    data = "module aa {yang-version 1.1; namespace urn:tests:extensions:metadata:aa; prefix aa;"
+            "import ietf-yang-metadata {prefix md;}"
+            "md:annotation aa {type string;} md:annotation aa {type uint8;}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 metadata v1\": Extension md:annotation is instantiated multiple times.",
+            "/aa:{extension='md:annotation'}/aa");
+}
+
+static void
+test_yin(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_ext_instance *e;
+    const char *data, *units;
+
+    data = "<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" xmlns:md=\"urn:ietf:params:xml:ns:yang:ietf-yang-metadata\" name=\"a\">\n"
+            "<yang-version value=\"1.1\"/><namespace uri=\"urn:tests:extensions:metadata:a\"/><prefix value=\"a\"/>\n"
+            "<import module=\"ietf-yang-metadata\"><prefix value=\"md\"/></import>\n"
+            "<feature name=\"f\"/>\n"
+            "<md:annotation name=\"x\">\n"
+            "  <description><text>test</text></description>\n"
+            "  <reference><text>test</text></reference>\n"
+            "  <if-feature name=\"f\"/>\n"
+            "  <status value=\"current\"/>\n"
+            "  <type name=\"uint8\"/>\n"
+            "  <units name=\"meters\"/>\n"
+            "</md:annotation></module>";
+    const char *feats[] = {"f", NULL};
+
+    UTEST_ADD_MODULE(data, LYS_IN_YIN, feats, &mod);
+    assert_int_equal(1, LY_ARRAY_COUNT(mod->compiled->exts));
+    e = &mod->compiled->exts[0];
+    assert_non_null(e->compiled);
+    assert_non_null(e->substmts);
+    lyplg_ext_get_storage(e, LY_STMT_UNITS, sizeof units, (const void **)&units);
+    assert_string_equal("meters", units);
+
+    /* invalid */
+    /* missing mandatory type substatement */
+    data = "<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" xmlns:md=\"urn:ietf:params:xml:ns:yang:ietf-yang-metadata\" name=\"aa\">\n"
+            "<yang-version value=\"1.1\"/><namespace uri=\"urn:tests:extensions:metadata:aa\"/><prefix value=\"aa\"/>\n"
+            "<import module=\"ietf-yang-metadata\"><prefix value=\"md\"/></import>\n"
+            "<md:annotation name=\"aa\"/>\n"
+            "</module>";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YIN, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 metadata v1\": Missing mandatory keyword \"type\" as a child of \"md:annotation aa\".",
+            "/aa:{extension='md:annotation'}/aa");
+
+    /* not allowed substatement */
+    data = "<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" xmlns:md=\"urn:ietf:params:xml:ns:yang:ietf-yang-metadata\" name=\"aa\">\n"
+            "<yang-version value=\"1.1\"/><namespace uri=\"urn:tests:extensions:metadata:aa\"/><prefix value=\"aa\"/>\n"
+            "<import module=\"ietf-yang-metadata\"><prefix value=\"md\"/></import>\n"
+            "<md:annotation name=\"aa\">\n"
+            "  <default value=\"x\"/>\n"
+            "</md:annotation></module>";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YIN, NULL));
+    CHECK_LOG_CTX("Invalid keyword \"default\" as a child of \"md:annotation aa\" extension instance.",
+            "/aa:{extension='md:annotation'}/aa");
+
+    /* invalid cardinality of units substatement */
+    data = "<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" xmlns:md=\"urn:ietf:params:xml:ns:yang:ietf-yang-metadata\" name=\"aa\">\n"
+            "<yang-version value=\"1.1\"/><namespace uri=\"urn:tests:extensions:metadata:aa\"/><prefix value=\"aa\"/>\n"
+            "<import module=\"ietf-yang-metadata\"><prefix value=\"md\"/></import>\n"
+            "<md:annotation name=\"aa\">\n"
+            "  <type name=\"string\"/>\n"
+            "  <units name=\"x\"/>\n"
+            "  <units name=\"y\"/>\n"
+            "</md:annotation></module>";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YIN, NULL));
+    CHECK_LOG_CTX("Duplicate keyword \"units\".",
+            "/aa:{extension='md:annotation'}/aa");
+
+    /* invalid cardinality of status substatement */
+    data = "<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" xmlns:md=\"urn:ietf:params:xml:ns:yang:ietf-yang-metadata\" name=\"aa\">\n"
+            "<yang-version value=\"1.1\"/><namespace uri=\"urn:tests:extensions:metadata:aa\"/><prefix value=\"aa\"/>\n"
+            "<import module=\"ietf-yang-metadata\"><prefix value=\"md\"/></import>\n"
+            "<md:annotation name=\"aa\">\n"
+            "  <type name=\"string\"/>\n"
+            "  <status value=\"current\"/>\n"
+            "  <status value=\"obsolete\"/>\n"
+            "</md:annotation></module>";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YIN, NULL));
+    CHECK_LOG_CTX("Duplicate keyword \"status\".",
+            "/aa:{extension='md:annotation'}/aa");
+
+    /* invalid cardinality of status substatement */
+    data = "<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" xmlns:md=\"urn:ietf:params:xml:ns:yang:ietf-yang-metadata\" name=\"aa\">\n"
+            "<yang-version value=\"1.1\"/><namespace uri=\"urn:tests:extensions:metadata:aa\"/><prefix value=\"aa\"/>\n"
+            "<import module=\"ietf-yang-metadata\"><prefix value=\"md\"/></import>\n"
+            "<md:annotation name=\"aa\">\n"
+            "  <type name=\"string\"/>\n"
+            "  <type name=\"uint8\"/>\n"
+            "</md:annotation></module>";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YIN, NULL));
+    CHECK_LOG_CTX("Duplicate keyword \"type\".",
+            "/aa:{extension='md:annotation'}/aa");
+
+    /* duplication of the same annotation */
+    data = "<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" xmlns:md=\"urn:ietf:params:xml:ns:yang:ietf-yang-metadata\" name=\"aa\">\n"
+            "<yang-version value=\"1.1\"/><namespace uri=\"urn:tests:extensions:metadata:aa\"/><prefix value=\"aa\"/>\n"
+            "<import module=\"ietf-yang-metadata\"><prefix value=\"md\"/></import>\n"
+            "<md:annotation name=\"aa\">\n"
+            "  <type name=\"string\"/>\n"
+            "</md:annotation><md:annotation name=\"aa\">\n"
+            "  <type name=\"uint8\"/>\n"
+            "</md:annotation></module>";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YIN, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 metadata v1\": Extension md:annotation is instantiated multiple times.",
+            "/aa:{extension='md:annotation'}/aa");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_yang),
+        UTEST(test_yin),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/extensions/test_nacm.c b/tests/utests/extensions/test_nacm.c
new file mode 100644
index 0000000..1c999fb
--- /dev/null
+++ b/tests/utests/extensions/test_nacm.c
@@ -0,0 +1,124 @@
+/*
+ * @file test_nacm.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for NACM extensions support
+ *
+ * Copyright (c) 2019-2020 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "libyang.h"
+
+static int
+setup(void **state)
+{
+    UTEST_SETUP;
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "ietf-netconf-acm", "2018-02-14", NULL));
+
+    return 0;
+}
+
+static void
+test_deny_all(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_node_container *cont;
+    struct lysc_node_leaf *leaf;
+    struct lysc_ext_instance *e;
+
+    const char *data = "module a {yang-version 1.1; namespace urn:tests:extensions:nacm:a; prefix en;"
+            "import ietf-netconf-acm {revision-date 2018-02-14; prefix nacm;}"
+            "container a { nacm:default-deny-all; leaf aa {type string;}}"
+            "leaf b {type string;}}";
+
+    /* valid data */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, &mod));
+    assert_non_null(cont = (struct lysc_node_container *)mod->compiled->data);
+    assert_non_null(leaf = (struct lysc_node_leaf *)cont->child);
+    assert_non_null(e = &cont->exts[0]);
+    assert_int_equal(LY_ARRAY_COUNT(cont->exts), 1);
+    assert_int_equal(LY_ARRAY_COUNT(leaf->exts), 1); /* NACM extensions inherit */
+    assert_ptr_equal(e->def, leaf->exts[0].def);
+    assert_int_equal(1, *((uint8_t *)e->compiled)); /* plugin's value for default-deny-all */
+    assert_null(cont->next->exts);
+
+    /* ignored - valid with warning */
+    data = "module b {yang-version 1.1; namespace urn:tests:extensions:nacm:b; prefix en;"
+            "import ietf-netconf-acm {revision-date 2018-02-14; prefix nacm;}"
+            "nacm:default-deny-all;}";
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 NACM v1\": "
+            "Extension nacm:default-deny-all is allowed only in a data nodes, but it is placed in \"module\" statement.",
+            "/b:{extension='nacm:default-deny-all'}");
+
+    /* invalid */
+    data = "module aa {yang-version 1.1; namespace urn:tests:extensions:nacm:aa; prefix en;"
+            "import ietf-netconf-acm {revision-date 2018-02-14; prefix nacm;}"
+            "leaf l { type string; nacm:default-deny-all; nacm:default-deny-write;}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 NACM v1\": "
+            "Extension nacm:default-deny-write is mixed with nacm:default-deny-all.",
+            "/aa:l/{extension='nacm:default-deny-all'}");
+}
+
+static void
+test_deny_write(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_node_container *cont;
+    struct lysc_node_leaf *leaf;
+    struct lysc_ext_instance *e;
+
+    const char *data = "module a {yang-version 1.1; namespace urn:tests:extensions:nacm:a; prefix en;"
+            "import ietf-netconf-acm {revision-date 2018-02-14; prefix nacm;}"
+            "container a { nacm:default-deny-write; leaf aa {type string;}}"
+            "leaf b {type string;}}";
+
+    /* valid data */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, &mod));
+    assert_non_null(cont = (struct lysc_node_container *)mod->compiled->data);
+    assert_non_null(leaf = (struct lysc_node_leaf *)cont->child);
+    assert_non_null(e = &cont->exts[0]);
+    assert_int_equal(LY_ARRAY_COUNT(cont->exts), 1);
+    assert_int_equal(LY_ARRAY_COUNT(leaf->exts), 1); /* NACM extensions inherit */
+    assert_ptr_equal(e->def, leaf->exts[0].def);
+    assert_int_equal(2, *((uint8_t *)e->compiled)); /* plugin's value for default-deny-write */
+
+    /* ignored - valid with warning */
+    data = "module b {yang-version 1.1; namespace urn:tests:extensions:nacm:b; prefix en;"
+            "import ietf-netconf-acm {revision-date 2018-02-14; prefix nacm;}"
+            "notification notif {nacm:default-deny-write;}}";
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 NACM v1\": "
+            "Extension nacm:default-deny-write is not allowed in notification statement.",
+            "/b:notif/{extension='nacm:default-deny-write'}");
+
+    /* invalid */
+    data = "module aa {yang-version 1.1; namespace urn:tests:extensions:nacm:aa; prefix en;"
+            "import ietf-netconf-acm {revision-date 2018-02-14; prefix nacm;}"
+            "leaf l { type string; nacm:default-deny-write; nacm:default-deny-write;}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 NACM v1\": "
+            "Extension nacm:default-deny-write is instantiated multiple times.",
+            "/aa:l/{extension='nacm:default-deny-write'}");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_deny_all, setup),
+        UTEST(test_deny_write, setup),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/extensions/test_schema_mount.c b/tests/utests/extensions/test_schema_mount.c
new file mode 100644
index 0000000..be879ec
--- /dev/null
+++ b/tests/utests/extensions/test_schema_mount.c
@@ -0,0 +1,1566 @@
+/**
+ * @file test_schema_mount.c
+ * @author Tadeas Vintrlik <xvintr04@stud.fit.vutbr.cz>
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief unit tests for Schema Mount extension support
+ *
+ * Copyright (c) 2021 - 2022 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "libyang.h"
+
+void **glob_state;
+
+static int
+setup(void **state)
+{
+    const char *schema =
+            "module sm {yang-version 1.1;namespace \"urn:sm\";prefix \"sm\";"
+            "import ietf-yang-schema-mount {prefix yangmnt;}"
+            "import ietf-interfaces {prefix if;}"
+            "container root {yangmnt:mount-point \"root\";}"
+            "container root2 {yangmnt:mount-point \"root\";}"
+            "container root3 {"
+            "  list ls { key name; leaf name {type string;}"
+            "    yangmnt:mount-point \"mnt-root\";"
+            "  }"
+            "}"
+            "container root4 {config false; yangmnt:mount-point \"root\";}"
+            "leaf target{type string;}"
+            "augment /if:interfaces/if:interface {"
+            "  leaf sm-name {type leafref {path \"/sm:target\";}}"
+            "}"
+            "}";
+
+    UTEST_SETUP;
+    glob_state = state;
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, schema, LYS_IN_YANG, NULL));
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "iana-if-type", NULL, NULL));
+
+    return 0;
+}
+
+static void
+test_schema(void **state)
+{
+    struct lys_module *mod;
+    const char *schema;
+    char *str;
+
+    /* invalid */
+    schema =
+            "module sm {\n"
+            "  namespace \"urn:sm\";\n"
+            "  prefix sm;\n"
+            "\n"
+            "  import ietf-yang-schema-mount {\n"
+            "    prefix yangmnt;\n"
+            "  }\n"
+            "\n"
+            "  container root {\n"
+            "    yangmnt:mount-point \"root\";\n"
+            "  }\n"
+            "}\n";
+    assert_int_equal(LY_EINVAL, lys_parse_mem(UTEST_LYCTX, schema, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 schema mount v1\": "
+            "Extension \"yangmnt:mount-point\" instance not allowed in YANG version 1 module.",
+            "/sm:root/{extension='yangmnt:mount-point'}/root");
+
+    schema =
+            "module sm {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"urn:sm\";\n"
+            "  prefix sm;\n"
+            "\n"
+            "  import ietf-yang-schema-mount {\n"
+            "    prefix yangmnt;\n"
+            "  }\n"
+            "\n"
+            "  yangmnt:mount-point \"root\";\n"
+            "}\n";
+    assert_int_equal(LY_EINVAL, lys_parse_mem(UTEST_LYCTX, schema, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 schema mount v1\": "
+            "Extension \"yangmnt:mount-point\" instance allowed only in container or list statement.",
+            "/sm:{extension='yangmnt:mount-point'}/root");
+
+    schema =
+            "module sm {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"urn:sm\";\n"
+            "  prefix sm;\n"
+            "\n"
+            "  import ietf-yang-schema-mount {\n"
+            "    prefix yangmnt;\n"
+            "  }\n"
+            "\n"
+            "  container root {\n"
+            "    leaf l {\n"
+            "      type empty;\n"
+            "      yangmnt:mount-point \"root\";\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+    assert_int_equal(LY_EINVAL, lys_parse_mem(UTEST_LYCTX, schema, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 schema mount v1\": "
+            "Extension \"yangmnt:mount-point\" instance allowed only in container or list statement.",
+            "/sm:root/l/{extension='yangmnt:mount-point'}/root");
+
+    schema =
+            "module sm {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"urn:sm\";\n"
+            "  prefix sm;\n"
+            "\n"
+            "  import ietf-yang-schema-mount {\n"
+            "    prefix yangmnt;\n"
+            "  }\n"
+            "\n"
+            "  list l {\n"
+            "    key \"k\";\n"
+            "    leaf k {\n"
+            "      type string;\n"
+            "    }\n"
+            "    yangmnt:mount-point \"root\";\n"
+            "    yangmnt:mount-point \"root2\";\n"
+            "  }\n"
+            "}\n";
+    assert_int_equal(LY_EINVAL, lys_parse_mem(UTEST_LYCTX, schema, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 schema mount v1\": "
+            "Multiple extension \"yangmnt:mount-point\" instances.",
+            "/sm:l/{extension='yangmnt:mount-point'}/root");
+
+    /* valid */
+    schema =
+            "module sm {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"urn:sm\";\n"
+            "  prefix sm;\n"
+            "\n"
+            "  import ietf-yang-schema-mount {\n"
+            "    prefix yangmnt;\n"
+            "  }\n"
+            "\n"
+            "  container root {\n"
+            "    yangmnt:mount-point \"root\";\n"
+            "  }\n"
+            "}\n";
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, schema, LYS_IN_YANG, &mod));
+    lys_print_mem(&str, mod, LYS_OUT_YANG, 0);
+    assert_string_equal(str, schema);
+    free(str);
+}
+
+static LY_ERR
+test_ext_data_clb(const struct lysc_ext_instance *ext, void *user_data, void **ext_data, ly_bool *ext_data_free)
+{
+    void **state = glob_state;
+    struct lyd_node *data = NULL;
+
+    (void)ext;
+
+    if (user_data) {
+        CHECK_PARSE_LYD_PARAM(user_data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    }
+
+    *ext_data = data;
+    *ext_data_free = 1;
+    return LY_SUCCESS;
+}
+
+static void
+test_parse_invalid(void **state)
+{
+    const char *xml, *json;
+    struct lyd_node *data;
+
+    /* no callback set */
+    xml =
+            "<root xmlns=\"urn:sm\">"
+            "  <unknown xmlns=\"unknown\">"
+            "    <interface>"
+            "      <name>bu</name>"
+            "      <type xmlns:ii=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ii:ethernetCsmacd</type>"
+            "    </interface>"
+            "  </unknown>"
+            "</root>";
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EINVAL, data);
+    CHECK_LOG_CTX("Ext plugin \"ly2 schema mount v1\": Failed to get extension data, no callback set.",
+            NULL);
+
+    json =
+            "{"
+            "  \"sm:root\": {"
+            "    \"unknown:unknown\": {"
+            "      \"interface\": ["
+            "        {"
+            "          \"name\": \"bu\","
+            "          \"type\": \"iana-if-type:ethernetCsmacd\""
+            "        }"
+            "      ]"
+            "    }"
+            "  }"
+            "}";
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EINVAL, data);
+    CHECK_LOG_CTX("Ext plugin \"ly2 schema mount v1\": Failed to get extension data, no callback set.",
+            NULL);
+
+    /* unknown data */
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, test_ext_data_clb, NULL);
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    assert_string_equal(LYD_NAME(data), "root");
+    assert_null(lyd_child(data));
+    assert_non_null(data->next);
+    assert_true(data->next->flags & LYD_DEFAULT);
+    lyd_free_siblings(data);
+
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, data);
+    CHECK_LOG_CTX("No module with namespace \"unknown\" in the context.",
+            "Data location \"/sm:root\", line number 1.");
+
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    assert_string_equal(LYD_NAME(data), "root");
+    assert_null(lyd_child(data));
+    assert_non_null(data->next);
+    assert_true(data->next->flags & LYD_DEFAULT);
+    lyd_free_siblings(data);
+
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, data);
+    CHECK_LOG_CTX("No module named \"unknown\" in the context.",
+            "Data location \"/sm:root\", line number 1.");
+
+    /* missing required callback data */
+    xml =
+            "<root xmlns=\"urn:sm\">"
+            "  <interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">"
+            "    <interface>"
+            "      <name>bu</name>"
+            "    </interface>"
+            "  </interfaces>"
+            "</root>";
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, data);
+    CHECK_LOG_CTX("Node \"interfaces\" not found as a child of \"root\" node.",
+            "Data location \"/sm:root\", line number 1.");
+
+    json =
+            "{"
+            "  \"sm:root\": {"
+            "    \"ietf-interfaces:interfaces\": {"
+            "      \"interface\": ["
+            "        {"
+            "          \"name\": \"bu\""
+            "        }"
+            "      ]"
+            "    }"
+            "  }"
+            "}";
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, data);
+    CHECK_LOG_CTX("Node \"interfaces\" not found as a child of \"root\" node.",
+            "Data location \"/sm:root\", line number 1.");
+
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, test_ext_data_clb,
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\" "
+            "    xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores\">"
+            "  <module-set>"
+            "    <name>test-set</name>"
+            "    <module>"
+            "      <name>ietf-yang-library</name>"
+            "      <revision>2019-01-04</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>"
+            "    </module>"
+            "  </module-set>"
+            "  <schema>"
+            "    <name>test-schema</name>"
+            "    <module-set>test-set</module-set>"
+            "  </schema>"
+            "  <datastore>"
+            "    <name>ds:running</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <datastore>"
+            "    <name>ds:operational</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <content-id>1</content-id>"
+            "</yang-library>"
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">"
+            "  <module-set-id>1</module-set-id>"
+            "</modules-state>");
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, data);
+    CHECK_LOG_CTX("Node \"interfaces\" not found as a child of \"root\" node.",
+            "Data location \"/sm:root\", line number 1.");
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, data);
+    CHECK_LOG_CTX("Node \"interfaces\" not found as a child of \"root\" node.",
+            "Data location \"/sm:root\", line number 1.");
+
+    /* missing module in yang-library data */
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, test_ext_data_clb,
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\" "
+            "    xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores\">"
+            "  <module-set>"
+            "    <name>test-set</name>"
+            "    <module>"
+            "      <name>ietf-yang-library</name>"
+            "      <revision>2019-01-04</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>"
+            "    </module>"
+            "  </module-set>"
+            "  <schema>"
+            "    <name>test-schema</name>"
+            "    <module-set>test-set</module-set>"
+            "  </schema>"
+            "  <datastore>"
+            "    <name>ds:running</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <datastore>"
+            "    <name>ds:operational</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <content-id>1</content-id>"
+            "</yang-library>"
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">"
+            "  <module-set-id>1</module-set-id>"
+            "</modules-state>"
+            "<schema-mounts xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount\">"
+            "  <mount-point>"
+            "    <module>sm</module>"
+            "    <label>root</label>"
+            "    <inline/>"
+            "  </mount-point>"
+            "</schema-mounts>");
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, data);
+    CHECK_LOG_CTX("Node \"interfaces\" not found as a child of \"root\" node.",
+            "Data location \"/sm:root\", line number 1.");
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, data);
+    CHECK_LOG_CTX("Node \"interfaces\" not found as a child of \"root\" node.",
+            "Data location \"/sm:root\", line number 1.");
+
+    /* callback data correct, invalid YANG data */
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, test_ext_data_clb,
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\" "
+            "    xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores\">"
+            "  <module-set>"
+            "    <name>test-set</name>"
+            "    <module>"
+            "      <name>ietf-datastores</name>"
+            "      <revision>2018-02-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-datastores</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-library</name>"
+            "      <revision>2019-01-04</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-schema-mount</name>"
+            "      <revision>2019-01-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-interfaces</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-interfaces</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>iana-if-type</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:iana-if-type</namespace>"
+            "    </module>"
+            "    <import-only-module>"
+            "      <name>ietf-yang-types</name>"
+            "      <revision>2013-07-15</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-types</namespace>"
+            "    </import-only-module>"
+            "  </module-set>"
+            "  <schema>"
+            "    <name>test-schema</name>"
+            "    <module-set>test-set</module-set>"
+            "  </schema>"
+            "  <datastore>"
+            "    <name>ds:running</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <datastore>"
+            "    <name>ds:operational</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <content-id>1</content-id>"
+            "</yang-library>"
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">"
+            "  <module-set-id>1</module-set-id>"
+            "</modules-state>"
+            "<schema-mounts xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount\">"
+            "  <mount-point>"
+            "    <module>sm</module>"
+            "    <label>root</label>"
+            "    <inline/>"
+            "  </mount-point>"
+            "</schema-mounts>");
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, data);
+    CHECK_LOG_CTX("Ext plugin \"ly2 schema mount v1\": "
+            "Mandatory node \"type\" instance does not exist.",
+            "Schema location \"/ietf-interfaces:interfaces/interface/type\".");
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, data);
+    CHECK_LOG_CTX("Ext plugin \"ly2 schema mount v1\": "
+            "Mandatory node \"type\" instance does not exist.",
+            "Schema location \"/ietf-interfaces:interfaces/interface/type\".");
+
+    /* same validation fail in separate validation */
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT | LYD_PARSE_ONLY, 0, LY_SUCCESS, data);
+    assert_int_equal(LY_EVALID, lyd_validate_all(&data, NULL, LYD_VALIDATE_PRESENT, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 schema mount v1\": "
+            "Mandatory node \"type\" instance does not exist.",
+            "Schema location \"/ietf-interfaces:interfaces/interface/type\".");
+    lyd_free_siblings(data);
+
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, LYD_PARSE_STRICT | LYD_PARSE_ONLY, 0, LY_SUCCESS, data);
+    assert_int_equal(LY_EVALID, lyd_validate_all(&data, NULL, LYD_VALIDATE_PRESENT, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 schema mount v1\": "
+            "Mandatory node \"type\" instance does not exist.",
+            "Schema location \"/ietf-interfaces:interfaces/interface/type\".");
+    lyd_free_siblings(data);
+
+    /* success */
+    xml =
+            "<root xmlns=\"urn:sm\">\n"
+            "  <interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>bu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "    </interface>\n"
+            "  </interfaces>\n"
+            "</root>\n";
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, xml, LYD_XML, LYD_PRINT_WITHSIBLINGS);
+    lyd_free_siblings(data);
+
+    json =
+            "{\n"
+            "  \"sm:root\": {\n"
+            "    \"ietf-interfaces:interfaces\": {\n"
+            "      \"interface\": [\n"
+            "        {\n"
+            "          \"name\": \"bu\",\n"
+            "          \"type\": \"iana-if-type:ethernetCsmacd\"\n"
+            "        }\n"
+            "      ]\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, json, LYD_JSON, LYD_PRINT_WITHSIBLINGS);
+    lyd_free_siblings(data);
+}
+
+static void
+test_parse_inline(void **state)
+{
+    const char *xml, *json;
+    char *lyb;
+    struct lyd_node *data;
+    const struct ly_ctx *ext_ctx;
+
+    /* valid */
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, test_ext_data_clb,
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\" "
+            "    xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores\">"
+            "  <module-set>"
+            "    <name>test-set</name>"
+            "    <module>"
+            "      <name>ietf-datastores</name>"
+            "      <revision>2018-02-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-datastores</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-library</name>"
+            "      <revision>2019-01-04</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-schema-mount</name>"
+            "      <revision>2019-01-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-interfaces</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-interfaces</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>iana-if-type</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:iana-if-type</namespace>"
+            "    </module>"
+            "    <import-only-module>"
+            "      <name>ietf-yang-types</name>"
+            "      <revision>2013-07-15</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-types</namespace>"
+            "    </import-only-module>"
+            "  </module-set>"
+            "  <schema>"
+            "    <name>test-schema</name>"
+            "    <module-set>test-set</module-set>"
+            "  </schema>"
+            "  <datastore>"
+            "    <name>ds:running</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <datastore>"
+            "    <name>ds:operational</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <content-id>1</content-id>"
+            "</yang-library>"
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">"
+            "  <module-set-id>1</module-set-id>"
+            "</modules-state>"
+            "<schema-mounts xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount\">"
+            "  <mount-point>"
+            "    <module>sm</module>"
+            "    <label>root</label>"
+            "    <inline/>"
+            "  </mount-point>"
+            "</schema-mounts>");
+    xml =
+            "<root xmlns=\"urn:sm\">\n"
+            "  <interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>bu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "    </interface>\n"
+            "  </interfaces>\n"
+            "  <interfaces-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>bu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "      <oper-status>not-present</oper-status>\n"
+            "      <statistics>\n"
+            "        <discontinuity-time>2022-01-01T10:00:00-00:00</discontinuity-time>\n"
+            "      </statistics>\n"
+            "    </interface>\n"
+            "  </interfaces-state>\n"
+            "</root>\n";
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, xml, LYD_XML, LYD_PRINT_WITHSIBLINGS);
+    ext_ctx = LYD_CTX(lyd_child(data));
+    lyd_free_siblings(data);
+
+    json =
+            "{\n"
+            "  \"sm:root\": {\n"
+            "    \"ietf-interfaces:interfaces\": {\n"
+            "      \"interface\": [\n"
+            "        {\n"
+            "          \"name\": \"bu\",\n"
+            "          \"type\": \"iana-if-type:ethernetCsmacd\"\n"
+            "        }\n"
+            "      ]\n"
+            "    },\n"
+            "    \"ietf-interfaces:interfaces-state\": {\n"
+            "      \"interface\": [\n"
+            "        {\n"
+            "          \"name\": \"bu\",\n"
+            "          \"type\": \"iana-if-type:ethernetCsmacd\",\n"
+            "          \"oper-status\": \"not-present\",\n"
+            "          \"statistics\": {\n"
+            "            \"discontinuity-time\": \"2022-01-01T10:00:00-00:00\"\n"
+            "          }\n"
+            "        }\n"
+            "      ]\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, json, LYD_JSON, LYD_PRINT_WITHSIBLINGS);
+    assert_ptr_equal(ext_ctx, LYD_CTX(lyd_child(data)));
+    lyd_free_siblings(data);
+
+    /* different yang-lib data with the same content-id */
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, test_ext_data_clb,
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\" "
+            "    xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores\">"
+            "  <module-set>"
+            "    <name>test-set</name>"
+            "    <module>"
+            "      <name>ietf-datastores</name>"
+            "      <revision>2018-02-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-datastores</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-library</name>"
+            "      <revision>2019-01-04</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-schema-mount</name>"
+            "      <revision>2019-01-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-interfaces</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-interfaces</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-ip</name>"
+            "      <revision>2014-06-16</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-interfaces</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>iana-if-type</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:iana-if-type</namespace>"
+            "    </module>"
+            "    <import-only-module>"
+            "      <name>ietf-yang-types</name>"
+            "      <revision>2013-07-15</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-types</namespace>"
+            "    </import-only-module>"
+            "  </module-set>"
+            "  <schema>"
+            "    <name>test-schema</name>"
+            "    <module-set>test-set</module-set>"
+            "  </schema>"
+            "  <datastore>"
+            "    <name>ds:running</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <datastore>"
+            "    <name>ds:operational</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <content-id>1</content-id>"
+            "</yang-library>"
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">"
+            "  <module-set-id>1</module-set-id>"
+            "</modules-state>"
+            "<schema-mounts xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount\">"
+            "  <mount-point>"
+            "    <module>sm</module>"
+            "    <label>root</label>"
+            "    <inline/>"
+            "  </mount-point>"
+            "</schema-mounts>");
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, xml, LYD_XML, LYD_PRINT_WITHSIBLINGS);
+    assert_ptr_not_equal(ext_ctx, LYD_CTX(lyd_child(data)));
+    ext_ctx = LYD_CTX(lyd_child(data));
+    lyd_free_siblings(data);
+
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, json, LYD_JSON, LYD_PRINT_WITHSIBLINGS);
+    assert_ptr_equal(ext_ctx, LYD_CTX(lyd_child(data)));
+
+    assert_int_equal(LY_SUCCESS, lyd_print_mem(&lyb, data, LYD_LYB, 0));
+    lyd_free_siblings(data);
+
+    CHECK_PARSE_LYD_PARAM(lyb, LYD_LYB, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    assert_ptr_equal(ext_ctx, LYD_CTX(lyd_child(data)));
+    free(lyb);
+    lyd_free_siblings(data);
+}
+
+static void
+test_parse_shared(void **state)
+{
+    const char *xml, *json;
+    char *lyb;
+    struct lyd_node *data;
+
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, test_ext_data_clb,
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\" "
+            "    xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores\">"
+            "  <module-set>"
+            "    <name>test-set</name>"
+            "    <module>"
+            "      <name>ietf-datastores</name>"
+            "      <revision>2018-02-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-datastores</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-library</name>"
+            "      <revision>2019-01-04</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-schema-mount</name>"
+            "      <revision>2019-01-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-interfaces</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-interfaces</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>iana-if-type</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:iana-if-type</namespace>"
+            "    </module>"
+            "    <import-only-module>"
+            "      <name>ietf-yang-types</name>"
+            "      <revision>2013-07-15</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-types</namespace>"
+            "    </import-only-module>"
+            "  </module-set>"
+            "  <schema>"
+            "    <name>test-schema</name>"
+            "    <module-set>test-set</module-set>"
+            "  </schema>"
+            "  <datastore>"
+            "    <name>ds:running</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <datastore>"
+            "    <name>ds:operational</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <content-id>1</content-id>"
+            "</yang-library>"
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">"
+            "  <module-set-id>1</module-set-id>"
+            "</modules-state>"
+            "<schema-mounts xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount\">"
+            "  <mount-point>"
+            "    <module>sm</module>"
+            "    <label>root</label>"
+            "    <shared-schema/>"
+            "  </mount-point>"
+            "</schema-mounts>");
+    xml =
+            "<root xmlns=\"urn:sm\">\n"
+            "  <interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>bu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "    </interface>\n"
+            "  </interfaces>\n"
+            "  <interfaces-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>bu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "      <oper-status>not-present</oper-status>\n"
+            "      <statistics>\n"
+            "        <discontinuity-time>2022-01-01T10:00:00-00:00</discontinuity-time>\n"
+            "      </statistics>\n"
+            "    </interface>\n"
+            "  </interfaces-state>\n"
+            "</root>\n";
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, xml, LYD_XML, LYD_PRINT_WITHSIBLINGS);
+    lyd_free_siblings(data);
+
+    json =
+            "{\n"
+            "  \"sm:root\": {\n"
+            "    \"ietf-interfaces:interfaces\": {\n"
+            "      \"interface\": [\n"
+            "        {\n"
+            "          \"name\": \"bu\",\n"
+            "          \"type\": \"iana-if-type:ethernetCsmacd\"\n"
+            "        }\n"
+            "      ]\n"
+            "    },\n"
+            "    \"ietf-interfaces:interfaces-state\": {\n"
+            "      \"interface\": [\n"
+            "        {\n"
+            "          \"name\": \"bu\",\n"
+            "          \"type\": \"iana-if-type:ethernetCsmacd\",\n"
+            "          \"oper-status\": \"not-present\",\n"
+            "          \"statistics\": {\n"
+            "            \"discontinuity-time\": \"2022-01-01T10:00:00-00:00\"\n"
+            "          }\n"
+            "        }\n"
+            "      ]\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, json, LYD_JSON, LYD_PRINT_WITHSIBLINGS);
+    lyd_free_siblings(data);
+
+    /* different yang-lib data */
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, test_ext_data_clb,
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\" "
+            "    xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores\">"
+            "  <module-set>"
+            "    <name>test-set</name>"
+            "    <module>"
+            "      <name>ietf-datastores</name>"
+            "      <revision>2018-02-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-datastores</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-library</name>"
+            "      <revision>2019-01-04</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-schema-mount</name>"
+            "      <revision>2019-01-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-interfaces</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-interfaces</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-ip</name>"
+            "      <revision>2014-06-16</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-interfaces</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>iana-if-type</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:iana-if-type</namespace>"
+            "    </module>"
+            "    <import-only-module>"
+            "      <name>ietf-yang-types</name>"
+            "      <revision>2013-07-15</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-types</namespace>"
+            "    </import-only-module>"
+            "  </module-set>"
+            "  <schema>"
+            "    <name>test-schema</name>"
+            "    <module-set>test-set</module-set>"
+            "  </schema>"
+            "  <datastore>"
+            "    <name>ds:running</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <datastore>"
+            "    <name>ds:operational</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <content-id>2</content-id>"
+            "</yang-library>"
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">"
+            "  <module-set-id>1</module-set-id>"
+            "</modules-state>"
+            "<schema-mounts xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount\">"
+            "  <mount-point>"
+            "    <module>sm</module>"
+            "    <label>root</label>"
+            "    <shared-schema/>"
+            "  </mount-point>"
+            "</schema-mounts>");
+    xml =
+            "<root2 xmlns=\"urn:sm\">\n"
+            "  <interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>bu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "    </interface>\n"
+            "  </interfaces>\n"
+            "  <interfaces-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>bu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "      <oper-status>not-present</oper-status>\n"
+            "      <statistics>\n"
+            "        <discontinuity-time>2022-01-01T10:00:00-00:00</discontinuity-time>\n"
+            "      </statistics>\n"
+            "    </interface>\n"
+            "  </interfaces-state>\n"
+            "</root2>\n";
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, data);
+    CHECK_LOG_CTX("Ext plugin \"ly2 schema mount v1\": "
+            "Shared-schema yang-library content-id \"2\" differs from \"1\" used previously.",
+            "/ietf-yang-library:yang-library/content-id");
+
+    /* data for 2 mount points */
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, test_ext_data_clb,
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\" "
+            "    xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores\">"
+            "  <module-set>"
+            "    <name>test-set</name>"
+            "    <module>"
+            "      <name>ietf-datastores</name>"
+            "      <revision>2018-02-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-datastores</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-library</name>"
+            "      <revision>2019-01-04</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-schema-mount</name>"
+            "      <revision>2019-01-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-interfaces</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-interfaces</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>iana-if-type</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:iana-if-type</namespace>"
+            "    </module>"
+            "    <import-only-module>"
+            "      <name>ietf-yang-types</name>"
+            "      <revision>2013-07-15</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-types</namespace>"
+            "    </import-only-module>"
+            "  </module-set>"
+            "  <schema>"
+            "    <name>test-schema</name>"
+            "    <module-set>test-set</module-set>"
+            "  </schema>"
+            "  <datastore>"
+            "    <name>ds:running</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <datastore>"
+            "    <name>ds:operational</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <content-id>1</content-id>"
+            "</yang-library>"
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">"
+            "  <module-set-id>1</module-set-id>"
+            "</modules-state>"
+            "<schema-mounts xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount\">"
+            "  <mount-point>"
+            "    <module>sm</module>"
+            "    <label>root</label>"
+            "    <shared-schema/>"
+            "  </mount-point>"
+            "</schema-mounts>");
+    xml =
+            "<root xmlns=\"urn:sm\">\n"
+            "  <interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>bu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "    </interface>\n"
+            "  </interfaces>\n"
+            "  <interfaces-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>bu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "      <oper-status>not-present</oper-status>\n"
+            "      <statistics>\n"
+            "        <discontinuity-time>2022-01-01T10:00:00-00:00</discontinuity-time>\n"
+            "      </statistics>\n"
+            "    </interface>\n"
+            "  </interfaces-state>\n"
+            "</root>\n"
+            "<root2 xmlns=\"urn:sm\">\n"
+            "  <interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>fu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:fddi</type>\n"
+            "    </interface>\n"
+            "  </interfaces>\n"
+            "  <interfaces-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>fu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:fddi</type>\n"
+            "      <oper-status>down</oper-status>\n"
+            "      <statistics>\n"
+            "        <discontinuity-time>2020-01-01T10:00:00-00:00</discontinuity-time>\n"
+            "      </statistics>\n"
+            "    </interface>\n"
+            "  </interfaces-state>\n"
+            "</root2>\n";
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, xml, LYD_XML, LYD_PRINT_WITHSIBLINGS);
+    lyd_free_siblings(data);
+
+    json =
+            "{\n"
+            "  \"sm:root\": {\n"
+            "    \"ietf-interfaces:interfaces\": {\n"
+            "      \"interface\": [\n"
+            "        {\n"
+            "          \"name\": \"bu\",\n"
+            "          \"type\": \"iana-if-type:ethernetCsmacd\"\n"
+            "        }\n"
+            "      ]\n"
+            "    },\n"
+            "    \"ietf-interfaces:interfaces-state\": {\n"
+            "      \"interface\": [\n"
+            "        {\n"
+            "          \"name\": \"bu\",\n"
+            "          \"type\": \"iana-if-type:ethernetCsmacd\",\n"
+            "          \"oper-status\": \"not-present\",\n"
+            "          \"statistics\": {\n"
+            "            \"discontinuity-time\": \"2022-01-01T10:00:00-00:00\"\n"
+            "          }\n"
+            "        }\n"
+            "      ]\n"
+            "    }\n"
+            "  },\n"
+            "  \"sm:root2\": {\n"
+            "    \"ietf-interfaces:interfaces\": {\n"
+            "      \"interface\": [\n"
+            "        {\n"
+            "          \"name\": \"fu\",\n"
+            "          \"type\": \"iana-if-type:fddi\"\n"
+            "        }\n"
+            "      ]\n"
+            "    },\n"
+            "    \"ietf-interfaces:interfaces-state\": {\n"
+            "      \"interface\": [\n"
+            "        {\n"
+            "          \"name\": \"fu\",\n"
+            "          \"type\": \"iana-if-type:fddi\",\n"
+            "          \"oper-status\": \"down\",\n"
+            "          \"statistics\": {\n"
+            "            \"discontinuity-time\": \"2020-01-01T10:00:00-00:00\"\n"
+            "          }\n"
+            "        }\n"
+            "      ]\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, json, LYD_JSON, LYD_PRINT_WITHSIBLINGS);
+
+    assert_int_equal(LY_SUCCESS, lyd_print_mem(&lyb, data, LYD_LYB, LYD_PRINT_WITHSIBLINGS));
+    lyd_free_siblings(data);
+
+    CHECK_PARSE_LYD_PARAM(lyb, LYD_LYB, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    free(lyb);
+    lyd_free_siblings(data);
+}
+
+static void
+test_parse_shared_parent_ref(void **state)
+{
+    const char *xml, *json;
+    struct lyd_node *data;
+
+    /* wrong leafref value */
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, test_ext_data_clb,
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\" "
+            "    xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores\">"
+            "  <module-set>"
+            "    <name>test-set</name>"
+            "    <module>"
+            "      <name>ietf-datastores</name>"
+            "      <revision>2018-02-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-datastores</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-library</name>"
+            "      <revision>2019-01-04</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-schema-mount</name>"
+            "      <revision>2019-01-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>sm</name>"
+            "      <namespace>urn:sm</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-interfaces</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-interfaces</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>iana-if-type</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:iana-if-type</namespace>"
+            "    </module>"
+            "    <import-only-module>"
+            "      <name>ietf-yang-types</name>"
+            "      <revision>2013-07-15</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-types</namespace>"
+            "    </import-only-module>"
+            "  </module-set>"
+            "  <schema>"
+            "    <name>test-schema</name>"
+            "    <module-set>test-set</module-set>"
+            "  </schema>"
+            "  <datastore>"
+            "    <name>ds:running</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <datastore>"
+            "    <name>ds:operational</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <content-id>1</content-id>"
+            "</yang-library>"
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">"
+            "  <module-set-id>1</module-set-id>"
+            "</modules-state>"
+            "<schema-mounts xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount\">"
+            "  <namespace>"
+            "    <prefix>smp</prefix>"
+            "    <uri>urn:sm</uri>"
+            "  </namespace>"
+            "  <mount-point>"
+            "    <module>sm</module>"
+            "    <label>mnt-root</label>"
+            "    <shared-schema>"
+            "      <parent-reference>/smp:target[. = current()/smp:name]</parent-reference>"
+            "    </shared-schema>"
+            "  </mount-point>"
+            "</schema-mounts>");
+    xml =
+            "<root3 xmlns=\"urn:sm\">\n"
+            "  <ls>\n"
+            "    <name>target-value</name>\n"
+            "    <interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "      <interface>\n"
+            "        <name>bu</name>\n"
+            "        <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "        <sm-name xmlns=\"urn:sm\">target-value</sm-name>\n"
+            "      </interface>\n"
+            "    </interfaces>\n"
+            "  </ls>\n"
+            "</root3>\n"
+            "<target xmlns=\"urn:sm\">wrong-target-value</target>\n";
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, data);
+    CHECK_LOG_CTX("Ext plugin \"ly2 schema mount v1\": "
+            "Invalid leafref value \"target-value\" - no target instance \"/sm:target\" with the same value.",
+            "Data location \"/ietf-interfaces:interfaces/interface[name='bu']/sm:sm-name\".");
+
+    json =
+            "{\n"
+            "  \"sm:root3\": {\n"
+            "    \"ls\": ["
+            "      {\n"
+            "        \"name\": \"target-value\",\n"
+            "        \"ietf-interfaces:interfaces\": {\n"
+            "          \"interface\": [\n"
+            "            {\n"
+            "              \"name\": \"bu\",\n"
+            "              \"type\": \"iana-if-type:ethernetCsmacd\",\n"
+            "              \"sm:sm-name\": \"target-value\"\n"
+            "            }\n"
+            "          ]\n"
+            "        }\n"
+            "      }\n"
+            "    ]\n"
+            "  },\n"
+            "  \"sm:target\": \"wrong-target-value\"\n"
+            "}\n";
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, data);
+    CHECK_LOG_CTX("Ext plugin \"ly2 schema mount v1\": "
+            "Invalid leafref value \"target-value\" - no target instance \"/sm:target\" with the same value.",
+            "Data location \"/ietf-interfaces:interfaces/interface[name='bu']/sm:sm-name\".");
+
+    /* success */
+    xml =
+            "<root3 xmlns=\"urn:sm\">\n"
+            "  <ls>\n"
+            "    <name>target-value</name>\n"
+            "    <interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "      <interface>\n"
+            "        <name>bu</name>\n"
+            "        <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "        <sm-name xmlns=\"urn:sm\">target-value</sm-name>\n"
+            "      </interface>\n"
+            "    </interfaces>\n"
+            "  </ls>\n"
+            "</root3>\n"
+            "<target xmlns=\"urn:sm\">target-value</target>\n";
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, xml, LYD_XML, LYD_PRINT_WITHSIBLINGS);
+    lyd_free_siblings(data);
+
+    json =
+            "{\n"
+            "  \"sm:root3\": {\n"
+            "    \"ls\": [\n"
+            "      {\n"
+            "        \"name\": \"target-value\",\n"
+            "        \"ietf-interfaces:interfaces\": {\n"
+            "          \"interface\": [\n"
+            "            {\n"
+            "              \"name\": \"bu\",\n"
+            "              \"type\": \"iana-if-type:ethernetCsmacd\",\n"
+            "              \"sm:sm-name\": \"target-value\"\n"
+            "            }\n"
+            "          ]\n"
+            "        }\n"
+            "      }\n"
+            "    ]\n"
+            "  },\n"
+            "  \"sm:target\": \"target-value\"\n"
+            "}\n";
+    CHECK_PARSE_LYD_PARAM(json, LYD_JSON, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, json, LYD_JSON, LYD_PRINT_WITHSIBLINGS);
+    lyd_free_siblings(data);
+}
+
+static void
+test_parse_config(void **state)
+{
+    const char *xml;
+    char *lyb;
+    struct lyd_node *data;
+    const struct lyd_node *node;
+
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, test_ext_data_clb,
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\" "
+            "    xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores\">"
+            "  <module-set>"
+            "    <name>test-set</name>"
+            "    <module>"
+            "      <name>ietf-datastores</name>"
+            "      <revision>2018-02-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-datastores</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-library</name>"
+            "      <revision>2019-01-04</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-schema-mount</name>"
+            "      <revision>2019-01-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-interfaces</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-interfaces</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>iana-if-type</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:iana-if-type</namespace>"
+            "    </module>"
+            "    <import-only-module>"
+            "      <name>ietf-yang-types</name>"
+            "      <revision>2013-07-15</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-types</namespace>"
+            "    </import-only-module>"
+            "  </module-set>"
+            "  <schema>"
+            "    <name>test-schema</name>"
+            "    <module-set>test-set</module-set>"
+            "  </schema>"
+            "  <datastore>"
+            "    <name>ds:running</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <datastore>"
+            "    <name>ds:operational</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <content-id>1</content-id>"
+            "</yang-library>"
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">"
+            "  <module-set-id>1</module-set-id>"
+            "</modules-state>"
+            "<schema-mounts xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount\">"
+            "  <mount-point>"
+            "    <module>sm</module>"
+            "    <label>root</label>"
+            "    <config>false</config>"
+            "    <inline/>"
+            "  </mount-point>"
+            "</schema-mounts>");
+    xml =
+            "<root xmlns=\"urn:sm\">\n"
+            "  <interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>bu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "      <enabled>true</enabled>\n"
+            "    </interface>\n"
+            "  </interfaces>\n"
+            "</root>\n";
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, xml, LYD_XML, LYD_PRINT_WITHSIBLINGS);
+
+    node = lyd_child(data);
+    assert_string_equal(LYD_NAME(node), "interfaces");
+    assert_true(node->schema->flags & LYS_CONFIG_R);
+    node = lyd_child(node);
+    assert_string_equal(LYD_NAME(node), "interface");
+    assert_true(node->schema->flags & LYS_CONFIG_R);
+    node = lyd_child(node);
+    assert_string_equal(LYD_NAME(node), "name");
+    assert_true(node->schema->flags & LYS_CONFIG_R);
+    node = node->next;
+    assert_string_equal(LYD_NAME(node), "type");
+    assert_true(node->schema->flags & LYS_CONFIG_R);
+
+    lyd_print_mem(&lyb, data, LYD_LYB, 0);
+    lyd_free_siblings(data);
+    CHECK_PARSE_LYD_PARAM(lyb, LYD_LYB, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    free(lyb);
+
+    node = lyd_child(data);
+    assert_string_equal(LYD_NAME(node), "interfaces");
+    assert_true(node->schema->flags & LYS_CONFIG_R);
+    node = lyd_child(node);
+    assert_string_equal(LYD_NAME(node), "interface");
+    assert_true(node->schema->flags & LYS_CONFIG_R);
+    node = lyd_child(node);
+    assert_string_equal(LYD_NAME(node), "name");
+    assert_true(node->schema->flags & LYS_CONFIG_R);
+    node = node->next;
+    assert_string_equal(LYD_NAME(node), "type");
+    assert_true(node->schema->flags & LYS_CONFIG_R);
+
+    lyd_free_siblings(data);
+
+    /* the same effect but use a config false mount point instead of the separate metadata node */
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, test_ext_data_clb,
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\" "
+            "    xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores\">"
+            "  <module-set>"
+            "    <name>test-set</name>"
+            "    <module>"
+            "      <name>ietf-datastores</name>"
+            "      <revision>2018-02-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-datastores</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-library</name>"
+            "      <revision>2019-01-04</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-schema-mount</name>"
+            "      <revision>2019-01-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-interfaces</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-interfaces</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>iana-if-type</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:iana-if-type</namespace>"
+            "    </module>"
+            "    <import-only-module>"
+            "      <name>ietf-yang-types</name>"
+            "      <revision>2013-07-15</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-types</namespace>"
+            "    </import-only-module>"
+            "  </module-set>"
+            "  <schema>"
+            "    <name>test-schema</name>"
+            "    <module-set>test-set</module-set>"
+            "  </schema>"
+            "  <datastore>"
+            "    <name>ds:running</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <datastore>"
+            "    <name>ds:operational</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <content-id>1</content-id>"
+            "</yang-library>"
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">"
+            "  <module-set-id>1</module-set-id>"
+            "</modules-state>"
+            "<schema-mounts xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount\">"
+            "  <mount-point>"
+            "    <module>sm</module>"
+            "    <label>root</label>"
+            "    <inline/>"
+            "  </mount-point>"
+            "</schema-mounts>");
+    xml =
+            "<root4 xmlns=\"urn:sm\">\n"
+            "  <interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>bu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "      <enabled>true</enabled>\n"
+            "    </interface>\n"
+            "  </interfaces>\n"
+            "</root4>\n";
+    CHECK_PARSE_LYD_PARAM(xml, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, data);
+    CHECK_LYD_STRING_PARAM(data, xml, LYD_XML, LYD_PRINT_WITHSIBLINGS);
+
+    node = lyd_child(data->next->next->next);
+    assert_string_equal(LYD_NAME(node), "interfaces");
+    assert_true(node->schema->flags & LYS_CONFIG_R);
+    node = lyd_child(node);
+    assert_string_equal(LYD_NAME(node), "interface");
+    assert_true(node->schema->flags & LYS_CONFIG_R);
+    node = lyd_child(node);
+    assert_string_equal(LYD_NAME(node), "name");
+    assert_true(node->schema->flags & LYS_CONFIG_R);
+    node = node->next;
+    assert_string_equal(LYD_NAME(node), "type");
+    assert_true(node->schema->flags & LYS_CONFIG_R);
+
+    lyd_free_siblings(data);
+}
+
+static void
+test_new(void **state)
+{
+    const char *xml;
+    const struct lys_module *mod;
+    struct lyd_node *data, *node;
+
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, test_ext_data_clb,
+            "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\" "
+            "    xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores\">"
+            "  <module-set>"
+            "    <name>test-set</name>"
+            "    <module>"
+            "      <name>ietf-datastores</name>"
+            "      <revision>2018-02-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-datastores</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-library</name>"
+            "      <revision>2019-01-04</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-library</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-yang-schema-mount</name>"
+            "      <revision>2019-01-14</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-interfaces</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-interfaces</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>iana-if-type</name>"
+            "      <revision>2014-05-08</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:iana-if-type</namespace>"
+            "    </module>"
+            "    <module>"
+            "      <name>ietf-ip</name>"
+            "      <revision>2014-06-16</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-ip</namespace>"
+            "    </module>"
+            "    <import-only-module>"
+            "      <name>ietf-yang-types</name>"
+            "      <revision>2013-07-15</revision>"
+            "      <namespace>urn:ietf:params:xml:ns:yang:ietf-yang-types</namespace>"
+            "    </import-only-module>"
+            "  </module-set>"
+            "  <schema>"
+            "    <name>test-schema</name>"
+            "    <module-set>test-set</module-set>"
+            "  </schema>"
+            "  <datastore>"
+            "    <name>ds:running</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <datastore>"
+            "    <name>ds:operational</name>"
+            "    <schema>test-schema</schema>"
+            "  </datastore>"
+            "  <content-id>1</content-id>"
+            "</yang-library>"
+            "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">"
+            "  <module-set-id>1</module-set-id>"
+            "</modules-state>"
+            "<schema-mounts xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount\">"
+            "  <mount-point>"
+            "    <module>sm</module>"
+            "    <label>root</label>"
+            "    <shared-schema/>"
+            "  </mount-point>"
+            "</schema-mounts>");
+    xml =
+            "<root xmlns=\"urn:sm\">\n"
+            "  <interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>bu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "      <ipv4 xmlns=\"urn:ietf:params:xml:ns:yang:ietf-ip\">\n"
+            "        <enabled>false</enabled>\n"
+            "      </ipv4>\n"
+            "    </interface>\n"
+            "  </interfaces>\n"
+            "  <interfaces-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">\n"
+            "    <interface>\n"
+            "      <name>bu</name>\n"
+            "      <type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>\n"
+            "      <oper-status>not-present</oper-status>\n"
+            "      <statistics>\n"
+            "        <discontinuity-time>2022-01-01T10:00:00-00:00</discontinuity-time>\n"
+            "      </statistics>\n"
+            "    </interface>\n"
+            "  </interfaces-state>\n"
+            "</root>\n";
+
+    /* create the data manually with simple new functions */
+    mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "sm");
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lyd_new_inner(NULL, mod, "root", 0, &data));
+
+    mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "ietf-interfaces");
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lyd_new_inner(data, mod, "interfaces", 0, &node));
+    assert_int_equal(LY_SUCCESS, lyd_new_list(node, NULL, "interface", 0, &node, "bu"));
+    assert_int_equal(LY_SUCCESS, lyd_new_term(node, NULL, "type", "iana-if-type:ethernetCsmacd", 0, NULL));
+    mod = ly_ctx_get_module_implemented(LYD_CTX(node), "ietf-ip");
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lyd_new_inner(node, mod, "ipv4", 0, &node));
+    assert_int_equal(LY_SUCCESS, lyd_new_term(node, NULL, "enabled", "false", 0, NULL));
+
+    mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "ietf-interfaces");
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lyd_new_inner(data, mod, "interfaces-state", 0, &node));
+    assert_int_equal(LY_SUCCESS, lyd_new_list(node, NULL, "interface", 0, &node, "bu"));
+    assert_int_equal(LY_SUCCESS, lyd_new_term(node, NULL, "type", "iana-if-type:ethernetCsmacd", 0, NULL));
+    assert_int_equal(LY_SUCCESS, lyd_new_term(node, NULL, "oper-status", "not-present", 0, NULL));
+    assert_int_equal(LY_SUCCESS, lyd_new_inner(node, NULL, "statistics", 0, &node));
+    assert_int_equal(LY_SUCCESS, lyd_new_term(node, NULL, "discontinuity-time", "2022-01-01T10:00:00-00:00", 0, NULL));
+
+    CHECK_LYD_STRING_PARAM(data, xml, LYD_XML, LYD_PRINT_WITHSIBLINGS);
+    lyd_free_siblings(data);
+
+    /* create the data using lyd_new_path */
+    assert_int_equal(LY_SUCCESS, lyd_new_path(NULL, UTEST_LYCTX,
+            "/sm:root/ietf-interfaces:interfaces/interface[name='bu']/type", "iana-if-type:ethernetCsmacd", 0, &data));
+    assert_int_equal(LY_SUCCESS, lyd_new_path(data, NULL,
+            "/sm:root/ietf-interfaces:interfaces/interface[name='bu']/ietf-ip:ipv4/enabled", "false", 0, NULL));
+    assert_int_equal(LY_SUCCESS, lyd_new_path(data, NULL,
+            "/sm:root/ietf-interfaces:interfaces-state/interface[name='bu']/type", "iana-if-type:ethernetCsmacd", 0, NULL));
+    assert_int_equal(LY_SUCCESS, lyd_new_path(data, NULL,
+            "/sm:root/ietf-interfaces:interfaces-state/interface[name='bu']/oper-status", "not-present", 0, NULL));
+    assert_int_equal(LY_SUCCESS, lyd_new_path(data, NULL,
+            "/sm:root/ietf-interfaces:interfaces-state/interface[name='bu']/statistics/discontinuity-time",
+            "2022-01-01T10:00:00-00:00", 0, NULL));
+
+    CHECK_LYD_STRING_PARAM(data, xml, LYD_XML, LYD_PRINT_WITHSIBLINGS);
+    lyd_free_siblings(data);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_schema),
+        UTEST(test_parse_invalid, setup),
+        UTEST(test_parse_inline, setup),
+        UTEST(test_parse_shared, setup),
+        UTEST(test_parse_shared_parent_ref, setup),
+        UTEST(test_parse_config, setup),
+        UTEST(test_new, setup),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/extensions/test_structure.c b/tests/utests/extensions/test_structure.c
new file mode 100644
index 0000000..23af450
--- /dev/null
+++ b/tests/utests/extensions/test_structure.c
@@ -0,0 +1,255 @@
+/**
+ * @file test_structure.c
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief unit tests for structure extensions support
+ *
+ * Copyright (c) 2022 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "libyang.h"
+
+static void
+test_schema(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_ext_instance *e;
+    char *printed = NULL;
+    const char *data, *info;
+
+    /* valid data */
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:structure:a; prefix a;"
+            "import ietf-yang-structure-ext {prefix sx;}"
+            "sx:structure struct {"
+            "  must \"/n2/l\";"
+            "  status deprecated;"
+            "  description desc;"
+            "  reference no-ref;"
+            "  typedef my-type {type string;}"
+            "  grouping my-grp {leaf gl {type my-type;}}"
+            "  container n1 {leaf l {config false; type uint32;}}"
+            "  list n2 {leaf l {type leafref {path /n1/l;}}}"
+            "  uses my-grp;"
+            "}}";
+
+    UTEST_ADD_MODULE(data, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(e = mod->compiled->exts);
+    assert_int_equal(LY_ARRAY_COUNT(mod->compiled->exts), 1);
+
+    /* valid augment data */
+    data = "module b {yang-version 1.1; namespace urn:tests:extensions:structure:b; prefix b;"
+            "import ietf-yang-structure-ext {prefix sx;}"
+            "import a {prefix a;}"
+            "sx:augment-structure \"/a:struct/a:n1\" {"
+            "  status obsolete;"
+            "  reference none;"
+            "  leaf aug-leaf {type string;}"
+            "}}";
+
+    UTEST_ADD_MODULE(data, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(e = mod->compiled->exts);
+    assert_int_equal(LY_ARRAY_COUNT(mod->compiled->exts), 1);
+
+    /* yang compiled print */
+    info = "module a {\n"
+            "  namespace \"urn:tests:extensions:structure:a\";\n"
+            "  prefix a;\n"
+            "\n"
+            "  ietf-yang-structure-ext:structure \"struct\" {\n"
+            "    must \"/n2/l\";\n"
+            "    status deprecated;\n"
+            "    description\n"
+            "      \"desc\";\n"
+            "    reference\n"
+            "      \"no-ref\";\n"
+            "    container n1 {\n"
+            "      status deprecated;\n"
+            "      leaf l {\n"
+            "        type uint32;\n"
+            "        status deprecated;\n"
+            "      }\n"
+            "      leaf aug-leaf {\n"
+            "        type string;\n"
+            "        status obsolete;\n"
+            "      }\n"
+            "    }\n"
+            "    list n2 {\n"
+            "      min-elements 0;\n"
+            "      max-elements 4294967295;\n"
+            "      ordered-by user;\n"
+            "      status deprecated;\n"
+            "      leaf l {\n"
+            "        type leafref {\n"
+            "          path \"/n1/l\";\n"
+            "          require-instance true;\n"
+            "          type uint32;\n"
+            "        }\n"
+            "        status deprecated;\n"
+            "      }\n"
+            "    }\n"
+            "    leaf gl {\n"
+            "      type string;\n"
+            "      status deprecated;\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    assert_non_null(mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "a"));
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG_COMPILED, 0));
+    assert_string_equal(printed, info);
+    free(printed);
+
+    info = "module b {\n"
+            "  namespace \"urn:tests:extensions:structure:b\";\n"
+            "  prefix b;\n"
+            "\n"
+            "  ietf-yang-structure-ext:augment-structure \"/a:struct/a:n1\";\n"
+            "}\n";
+
+    assert_non_null(mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "b"));
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG_COMPILED, 0));
+    assert_string_equal(printed, info);
+    free(printed);
+
+    /* no substatements */
+    data = "module c {yang-version 1.1; namespace urn:tests:extensions:structure:c; prefix c;"
+            "import ietf-yang-structure-ext {prefix sx;}"
+            "sx:structure struct;}";
+    info = "module c {\n"
+            "  namespace \"urn:tests:extensions:structure:c\";\n"
+            "  prefix c;\n"
+            "\n"
+            "  ietf-yang-structure-ext:structure \"struct\";\n"
+            "}\n";
+
+    UTEST_ADD_MODULE(data, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(e = mod->compiled->exts);
+    assert_int_equal(LY_ARRAY_COUNT(mod->compiled->exts), 1);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG_COMPILED, 0));
+    assert_string_equal(printed, info);
+    free(printed);
+}
+
+static void
+test_schema_invalid(void **state)
+{
+    const char *data;
+
+    /* structure */
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:structure:a; prefix self;"
+            "import ietf-yang-structure-ext {prefix sx;}"
+            "sx:structure struct {import yang;}}";
+    UTEST_INVALID_MODULE(data, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid keyword \"import\" as a child of \"sx:structure struct\" extension instance.",
+            "/a:{extension='sx:structure'}/struct");
+
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:structure:a; prefix self;"
+            "import ietf-yang-structure-ext {prefix sx;}"
+            "container b { sx:structure struct { container x { leaf x {type string;}}}}}";
+    UTEST_INVALID_MODULE(data, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Ext plugin \"ly2 structure v1\": "
+            "Extension sx:structure must not be used as a non top-level statement in \"container\" statement.",
+            "/a:b/{extension='sx:structure'}/struct");
+
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:structure:a; prefix self;"
+            "import ietf-yang-structure-ext {prefix sx;}"
+            "sx:structure { container x { leaf x {type string;}}}}";
+    UTEST_INVALID_MODULE(data, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Extension instance \"sx:structure\" missing argument element \"name\".", NULL);
+
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:structure:a; prefix self;"
+            "import ietf-yang-structure-ext {prefix sx;}"
+            "sx:structure struct { container x { leaf x {type string;}}}"
+            "sx:structure struct { container y { leaf y {type string;}}}}";
+    UTEST_INVALID_MODULE(data, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Ext plugin \"ly2 structure v1\": Extension sx:structure is instantiated multiple times.",
+            "/a:{extension='sx:structure'}/struct");
+
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:structure:a; prefix self;"
+            "import ietf-yang-structure-ext {prefix sx;}"
+            "sx:structure struct { container x { leaf x {type string;}}}"
+            "choice struct { container y { leaf y {type string;}}}}";
+    UTEST_INVALID_MODULE(data, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Ext plugin \"ly2 structure v1\": Extension sx:structure collides with a choice with the same identifier.",
+            "/a:{extension='sx:structure'}/struct");
+
+    /* augment-structure */
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:structure:a; prefix a;"
+            "import ietf-yang-structure-ext {prefix sx;}"
+            "sx:structure struct {"
+            "  container n1 {leaf l {config false; type uint32;}}"
+            "  list n2 {leaf l {type string;}}"
+            "}"
+            "container n1 {leaf l2 {type uint8;}}}";
+    UTEST_ADD_MODULE(data, LYS_IN_YANG, NULL, NULL);
+
+    data = "module b {yang-version 1.1; namespace urn:tests:extensions:structure:b; prefix b;"
+            "import ietf-yang-structure-ext {prefix sx;}"
+            "import a {prefix a;}"
+            "sx:augment-structure \"/a:n1\" {"
+            "  leaf aug-leaf {type string;}"
+            "}}";
+    UTEST_INVALID_MODULE(data, LYS_IN_YANG, NULL, LY_ENOTFOUND);
+    CHECK_LOG_CTX("Augment extension target node \"/a:n1\" from module \"b\" was not found.",
+            "/b:{extension='sx:augment-structure'}/{augment='/a:n1'}");
+}
+
+static void
+test_parse(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_ext_instance *e;
+    struct lyd_node *tree = NULL;
+    const char *yang;
+    const char *xml = "<x xmlns=\"urn:tests:extensions:structure:a\">"
+            "<x>test</x>"
+            "<x2 xmlns=\"urn:tests:extensions:structure:b\">25</x2>"
+            "</x>";
+    const char *json = "{\"a:x\":{\"x\":\"test\",\"b:x2\":25}}";
+
+    yang = "module a {yang-version 1.1; namespace urn:tests:extensions:structure:a; prefix a;"
+            "import ietf-yang-structure-ext {prefix sx;}"
+            "sx:structure struct { container x { leaf x { type string;}}}}";
+    UTEST_ADD_MODULE(yang, LYS_IN_YANG, NULL, &mod);
+
+    yang = "module b {yang-version 1.1; namespace urn:tests:extensions:structure:b; prefix b;"
+            "import ietf-yang-structure-ext {prefix sx;}"
+            "import a {prefix a;}"
+            "sx:augment-structure \"/a:struct/a:x\" {"
+            "  leaf x2 {type uint32;}"
+            "}}";
+    UTEST_ADD_MODULE(yang, LYS_IN_YANG, NULL, NULL);
+
+    /* get extension after recompilation */
+    assert_non_null(e = mod->compiled->exts);
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(xml, &UTEST_IN));
+    assert_int_equal(LY_SUCCESS, lyd_parse_ext_data(e, NULL, UTEST_IN, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, &tree));
+    CHECK_LYD_STRING_PARAM(tree, xml, LYD_XML, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS);
+    lyd_free_all(tree);
+
+    ly_in_memory(UTEST_IN, json);
+    assert_int_equal(LY_SUCCESS, lyd_parse_ext_data(e, NULL, UTEST_IN, LYD_JSON, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, &tree));
+    CHECK_LYD_STRING_PARAM(tree, json, LYD_JSON, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS);
+    lyd_free_all(tree);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_schema),
+        UTEST(test_schema_invalid),
+        UTEST(test_parse),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/extensions/test_yangdata.c b/tests/utests/extensions/test_yangdata.c
new file mode 100644
index 0000000..8c0176f
--- /dev/null
+++ b/tests/utests/extensions/test_yangdata.c
@@ -0,0 +1,273 @@
+/*
+ * @file test_yangdata.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for yang-data extensions support
+ *
+ * Copyright (c) 2019-2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "libyang.h"
+
+static int
+setup(void **state)
+{
+    UTEST_SETUP;
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "ietf-restconf", "2017-01-26", NULL));
+
+    return 0;
+}
+
+static void
+test_schema(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_ext_instance *e;
+    char *printed = NULL;
+    const char *data = "module a {yang-version 1.1; namespace urn:tests:extensions:yangdata:a; prefix self;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "feature x;"
+            "rc:yang-data template { container x { list l { leaf x { type string;}} leaf y {if-feature x; type string; config false;}}}}";
+    const char *info = "module a {\n"
+            "  namespace \"urn:tests:extensions:yangdata:a\";\n"
+            "  prefix self;\n\n"
+            "  ietf-restconf:yang-data \"template\" {\n"
+            "    container x {\n"
+            "      status current;\n"
+            "      list l {\n" /* no key */
+            "        min-elements 0;\n"
+            "        max-elements 4294967295;\n"
+            "        ordered-by user;\n"
+            "        status current;\n"
+            "        leaf x {\n"
+            "          type string;\n"
+            "          status current;\n"
+            "        }\n"
+            "      }\n"
+            "      leaf y {\n" /* config and if-feature are ignored */
+            "        type string;\n"
+            "        status current;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* valid data */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, &mod));
+    assert_non_null(e = mod->compiled->exts);
+    assert_int_equal(LY_ARRAY_COUNT(mod->compiled->exts), 1);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG_COMPILED, 0));
+    assert_string_equal(printed, info);
+    free(printed);
+
+    data = "module c {yang-version 1.1; namespace urn:tests:extensions:yangdata:c; prefix self;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "grouping g { choice ch { container a {presence a; config false;} container b {presence b; config true;}}}"
+            "rc:yang-data template { uses g;}}";
+    info = "module c {\n"
+            "  namespace \"urn:tests:extensions:yangdata:c\";\n"
+            "  prefix self;\n\n"
+            "  ietf-restconf:yang-data \"template\" {\n"
+            "    choice ch {\n"
+            "      status current;\n"
+            "      case a {\n"
+            "        status current;\n"
+            "        container a {\n"
+            "          presence \"true\";\n"
+            "          status current;\n"
+            "        }\n"
+            "      }\n"
+            "      case b {\n"
+            "        status current;\n"
+            "        container b {\n"
+            "          presence \"true\";\n"
+            "          status current;\n"
+            "        }\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, &mod));
+    assert_non_null(e = mod->compiled->exts);
+    assert_int_equal(LY_ARRAY_COUNT(mod->compiled->exts), 1);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG_COMPILED, 0));
+    assert_string_equal(printed, info);
+    free(printed);
+
+    /* ignored - valid with warning */
+    data = "module b {yang-version 1.1; namespace urn:tests:extensions:yangdata:b; prefix self;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "container b { rc:yang-data template { container x { leaf x {type string;}}}}}";
+    info = "module b {\n"
+            "  namespace \"urn:tests:extensions:yangdata:b\";\n"
+            "  prefix self;\n\n"
+            "  container b {\n"
+            "    config true;\n"
+            "    status current;\n"
+            "  }\n"
+            "}\n";
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, &mod));
+    assert_null(mod->compiled->exts);
+    CHECK_LOG_CTX("Ext plugin \"ly2 yang-data v1\": "
+            "Extension rc:yang-data is ignored since it appears as a non top-level statement in \"container\" statement.",
+            "/b:b/{extension='rc:yang-data'}/template");
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG_COMPILED, 0));
+    assert_string_equal(printed, info);
+    free(printed);
+
+    /* sama data nodes name, but not conflicting */
+    data = "module d {yang-version 1.1; namespace urn:tests:extensions:yangdata:d; prefix self;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "leaf d { type string;}"
+            "rc:yang-data template1 { container d {presence d;}}"
+            "rc:yang-data template2 { container d {presence d;}}}";
+    info = "module d {\n"
+            "  namespace \"urn:tests:extensions:yangdata:d\";\n"
+            "  prefix self;\n\n"
+            "  ietf-restconf:yang-data \"template1\" {\n"
+            "    container d {\n"
+            "      presence \"true\";\n"
+            "      status current;\n"
+            "    }\n"
+            "  }\n"
+            "  ietf-restconf:yang-data \"template2\" {\n"
+            "    container d {\n"
+            "      presence \"true\";\n"
+            "      status current;\n"
+            "    }\n"
+            "  }\n\n"
+            "  leaf d {\n"
+            "    type string;\n"
+            "    config true;\n"
+            "    status current;\n"
+            "  }\n"
+            "}\n";
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, &mod));
+    assert_non_null(e = mod->compiled->exts);
+    assert_int_equal(LY_ARRAY_COUNT(mod->compiled->exts), 2);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG_COMPILED, 0));
+    assert_string_equal(printed, info);
+    free(printed);
+}
+
+static void
+test_schema_invalid(void **state)
+{
+    const char *data = "module a {yang-version 1.1; namespace urn:tests:extensions:yangdata:a; prefix self;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "rc:yang-data template { leaf x {type string;}}}";
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid keyword \"leaf\" as a child of \"rc:yang-data template\" extension instance.",
+            "/a:{extension='rc:yang-data'}/template");
+
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:yangdata:a; prefix self;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "rc:yang-data template { choice x { leaf x {type string;}}}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 yang-data v1\": "
+            "Extension rc:yang-data is instantiated with leaf top level data node (inside a choice), "
+            "but only a single container data node is allowed.",
+            "/a:{extension='rc:yang-data'}/template");
+
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:yangdata:a; prefix self;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "rc:yang-data template { choice x { case x { container z {presence ppp;} leaf x {type string;}}}}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 yang-data v1\": "
+            "Extension rc:yang-data is instantiated with multiple top level data nodes (inside a single choice's case), "
+            "but only a single container data node is allowed.",
+            "/a:{extension='rc:yang-data'}/template");
+
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:yangdata:a; prefix self;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "rc:yang-data template { container x { leaf x {type string;}} container y { leaf y {type string;}}}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 yang-data v1\": "
+            "Extension rc:yang-data is instantiated with multiple top level data nodes, "
+            "but only a single container data node is allowed.",
+            "/a:{extension='rc:yang-data'}/template");
+
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:yangdata:a; prefix self;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "rc:yang-data template;}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 yang-data v1\": "
+            "Extension rc:yang-data is instantiated without any top level data node, "
+            "but exactly one container data node is expected.",
+            "/a:{extension='rc:yang-data'}/template");
+
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:yangdata:a; prefix self;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "rc:yang-data { container x { leaf x {type string;}}}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Extension instance \"rc:yang-data\" missing argument element \"name\".", NULL);
+
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:yangdata:a; prefix self;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "rc:yang-data template { container x { leaf x {type string;}}}"
+            "rc:yang-data template { container y { leaf y {type string;}}}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 yang-data v1\": "
+            "Extension rc:yang-data is instantiated multiple times.",
+            "/a:{extension='rc:yang-data'}/template");
+
+    data = "module a {yang-version 1.1; namespace urn:tests:extensions:yangdata:a; prefix self;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "grouping t { leaf-list x {type string;}}"
+            "rc:yang-data template { uses t;}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Ext plugin \"ly2 yang-data v1\": "
+            "Extension rc:yang-data is instantiated with leaf-list top level data node, "
+            "but only a single container data node is allowed.",
+            "/a:{extension='rc:yang-data'}/template");
+}
+
+static void
+test_parse(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_ext_instance *e;
+    struct lyd_node *tree = NULL;
+    const char *schema = "module a {yang-version 1.1; namespace urn:tests:extensions:yangdata:a; prefix self;"
+            "import ietf-restconf {revision-date 2017-01-26; prefix rc;}"
+            "rc:yang-data template { container x { leaf x { type string;}}}}";
+    const char *xml = "<x xmlns=\"urn:tests:extensions:yangdata:a\"><x>test</x></x>";
+    const char *json = "{\"a:x\":{\"x\":\"test\"}}";
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, schema, LYS_IN_YANG, &mod));
+    assert_non_null(e = mod->compiled->exts);
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(xml, &UTEST_IN));
+    assert_int_equal(LY_SUCCESS, lyd_parse_ext_data(e, NULL, UTEST_IN, LYD_XML, 0, LYD_VALIDATE_PRESENT, &tree));
+    CHECK_LYD_STRING_PARAM(tree, xml, LYD_XML, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS);
+    lyd_free_all(tree);
+
+    ly_in_memory(UTEST_IN, json);
+    assert_int_equal(LY_SUCCESS, lyd_parse_ext_data(e, NULL, UTEST_IN, LYD_JSON, 0, LYD_VALIDATE_PRESENT, &tree));
+    CHECK_LYD_STRING_PARAM(tree, json, LYD_JSON, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS);
+
+    lyd_free_all(tree);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_schema, setup),
+        UTEST(test_schema_invalid, setup),
+        UTEST(test_parse, setup),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/node/list.c b/tests/utests/node/list.c
new file mode 100644
index 0000000..8b14ece
--- /dev/null
+++ b/tests/utests/node/list.c
@@ -0,0 +1,1632 @@
+/**
+ * @file list.c
+ * @author Radek Iša <isa@cesnet.cz>
+ * @brief test for list node
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* GLOBAL INCLUDE HEADERS */
+#include <ctype.h>
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+
+#define LYD_TREE_CREATE(INPUT, MODEL) \
+    CHECK_PARSE_LYD_PARAM(INPUT, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, MODEL)
+
+#define MODULE_CREATE_YIN(MOD_NAME, NODES) \
+    "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" \
+    "<module name=\"" MOD_NAME "\"\n" \
+    "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n" \
+    "        xmlns:pref=\"urn:tests:" MOD_NAME "\">\n" \
+    "  <yang-version value=\"1.1\"/>\n" \
+    "  <namespace uri=\"urn:tests:" MOD_NAME "\"/>\n" \
+    "  <prefix value=\"pref\"/>\n" \
+    NODES \
+    "</module>\n"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+static void
+test_schema_yang(void **state)
+{
+    const char *schema;
+    struct lys_module *mod;
+    struct lysc_node_list *lysc_leaf;
+    struct lysc_node *lysc_node;
+
+    schema = MODULE_CREATE_YANG("T0", "list user {"
+            "key uid;"
+            "unique name;"
+            "leaf uid{type int32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 1, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YANG("T1", "list user {"
+            "key uid;"
+            "container name{"
+            "   leaf fist  {type string;}"
+            "   container second{leaf sub { type int32;}}"
+            "}"
+            "leaf uid{type int32;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 0, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "name", 0, LYS_CONTAINER, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YANG("T2", "list grup {"
+            "key \"guid\";"
+            "leaf guid{type int32;}"
+            "list users{ key name; leaf name {type string;}}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "grup", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 0, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "guid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "users", 0, LYS_LIST, 1, 0, 0, 0);
+
+    /* restriction */
+    schema = MODULE_CREATE_YANG("T3", "list grup {"
+            "key guid;"
+            "min-elements 10;"
+            "max-elements 20;"
+            "leaf guid{type int32;}"
+            "list users{ key name; leaf name {type string;}}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_MAND_TRUE | LYS_ORDBY_SYSTEM, 1, \
+            "grup", 0, 0, 0, 0, 0, 1, 20, 10, 0, 0, 0, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "guid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "users", 0, LYS_LIST, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YANG("T4", "list user {"
+            "key \"uid name\";"
+            "unique name;"
+            "leaf uid{type int32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 1, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE | LYS_KEY, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YANG("T5", "list rule {"
+            "key \"id\";"
+            "unique \"name\";"
+            "unique \"ip port\";"
+            "leaf id{type int32;}"
+            "leaf name{type string;}"
+            "leaf ip{type string;}"
+            "leaf port{type int16;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "rule", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 2, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "id", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "ip", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "port", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    /* test error */
+    schema = MODULE_CREATE_YANG("TERR_0", "list user {"
+            "key uid;"
+            "min-elements 10;"
+            "max-elements -1;"
+            "leaf uid{type int32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_0\" failed.", NULL,
+            "Invalid value \"-1\" of \"max-elements\".", "Line number 5.");
+
+    schema = MODULE_CREATE_YANG("TERR_0", "list user {"
+            "key uid;"
+            "min-elements 10;"
+            "max-elements 4294967298;"
+            "leaf uid{type int32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_0\" failed.", NULL,
+            "Value \"4294967298\" is out of \"max-elements\" bounds.", "Line number 5.");
+
+    schema = MODULE_CREATE_YANG("TERR_0", "list user {"
+            "key uid;"
+            "min-elements 20;"
+            "max-elements 10;"
+            "leaf uid{type int32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("List min-elements 20 is bigger than max-elements 10.", "/TERR_0:user");
+
+    schema = MODULE_CREATE_YANG("TERR_0", "list user {"
+            "key uid;"
+            "min-elements -1;"
+            "max-elements 20;"
+            "leaf uid{type int32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_0\" failed.", NULL,
+            "Invalid value \"-1\" of \"min-elements\".", "Line number 5.");
+
+    schema = MODULE_CREATE_YANG("TERR_0", "list user {"
+            "key uid;"
+            "key name;"
+            "leaf uid{type int32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_0\" failed.", NULL,
+            "Duplicate keyword \"key\".", "Line number 5.");
+
+    schema = MODULE_CREATE_YANG("T6", "list user {"
+            "config false;"
+            "leaf uid{type int32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_R | LYS_STATUS_CURR | LYS_ORDBY_USER | LYS_KEYLESS | LYS_SET_CONFIG, \
+            1, "user", 0, 0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 0, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_R | LYS_STATUS_CURR, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_R | LYS_STATUS_CURR, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_R | LYS_STATUS_CURR, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YANG("T7", "list user {"
+            "key uid;"
+            "unique name;"
+            "ordered-by user;"
+            "leaf uid{type int32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_USER, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 1, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YANG("T8", "list user {"
+            "key uid;"
+            "unique name;"
+            "ordered-by system;"
+            "leaf uid{type int32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 1, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YANG("TERROR0", "list user {"
+            "key uid;"
+            "unique name;"
+            "ordered-by systeme;"
+            "leaf uid{type int32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERROR0\" failed.", NULL,
+            "Invalid value \"systeme\" of \"ordered-by\".", "Line number 5.");
+
+    schema = MODULE_CREATE_YANG("TERROR0", "list \"\" {"
+            "key uid;"
+            "unique name;"
+            "ordered-by system;"
+            "leaf uid{type int32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERROR0\" failed.", NULL,
+            "Statement argument is required.", "Line number 5.");
+
+    schema = MODULE_CREATE_YANG("T9", "list user {"
+            "key uid;"
+            "unique name;"
+            "ordered-by system;"
+            "leaf uid{type int32;}"
+            "leaf name{type string;}"
+            "leaf group{type string; default \"abcd\";}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 1, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_SET_DFLT, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YANG("T10", "list user {"
+            "key uid;"
+            "leaf uid{type int32; default \"25\";}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 0, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY | LYS_SET_DFLT, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YANG("T11",
+            "typedef my_type {"
+            "    type int8; default \"25\";"
+            "}"
+            "list user {"
+            "   key uid;"
+            "   leaf uid{type my_type;}"
+            "   leaf name{type string;}"
+            "   leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 0, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+}
+
+static void
+test_schema_yin(void **state)
+{
+    const char *schema;
+    struct lys_module *mod;
+    struct lysc_node_list *lysc_leaf;
+    struct lysc_node *lysc_node;
+
+    schema = MODULE_CREATE_YIN("T0", "<list name=\"user\">"
+            "   <key value=\"uid\"/>"
+            "   <unique tag=\"name\"/>"
+            "   <leaf name=\"uid\"><type name=\"int32\"/></leaf>"
+            "   <leaf name=\"name\"><type name=\"string\"/></leaf>"
+            "   <leaf name=\"group\"><type name=\"string\"/></leaf>"
+            "</list>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 1, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YIN("T00", "<list name=\"user\">"
+            "   <key value=\"u&lt;id\"/>"
+            "   <leaf name=\"uid\"><type name=\"int32\"/></leaf>"
+            "   <leaf name=\"name\"><type name=\"string\"/></leaf>"
+            "   <leaf name=\"group\"><type name=\"string\"/></leaf>"
+            "</list>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("The list's key \"u<id\" not found.", "/T00:user");
+
+    schema = MODULE_CREATE_YIN("T1", "<list name=\"user\"> "
+            "   <key value=\"uid\"/>"
+            "   <container name=\"name\">"
+            "      <leaf name=\"fist\">  <type name=\"string\"/> </leaf>"
+            "      <container name=\"second\">"
+            "           <leaf name=\"sub\"> <type name=\"int32\"/></leaf>"
+            "      </container>"
+            "   </container>"
+            "   <leaf name=\"uid\"> <type name=\"int32\"/></leaf>"
+            "</list>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 0, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "name", 0, LYS_CONTAINER, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YIN("T2", "<list name=\"grup\">"
+            "<key value=\"guid\"/>"
+            "<leaf name=\"guid\"> <type name=\"int32\"/> </leaf>"
+            "<list name=\"users\">"
+            "   <key value=\"name\"/>"
+            "   <leaf name=\"name\"> <type name=\"string\"/> </leaf>"
+            "</list>"
+            "</list>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "grup", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 0, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "guid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "users", 0, LYS_LIST, 1, 0, 0, 0);
+
+    /* restriction */
+    schema = MODULE_CREATE_YIN("T3",
+            "<list name = \"grup\">"
+            "   <key value=\"guid\"/>"
+            "   <min-elements value=\"10\"/>"
+            "   <max-elements value=\"20\"/>"
+            "   <leaf name=\"guid\"> <type name=\"int32\"/> </leaf>"
+            "   <list name=\"users\"> <key value=\"name\"/>"
+            "       <leaf name=\"name\"> <type name=\"string\"/> </leaf>"
+            "   </list>"
+            "</list>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_MAND_TRUE | LYS_ORDBY_SYSTEM, 1, "grup", \
+            0, 0, 0, 0, 0, 1, 20, 10, 0, 0, 0, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "guid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM,  1, "users", 0, LYS_LIST, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YIN("T4",
+            "<list name=\"user\">"
+            "   <key value=\"uid name\"/>"
+            "   <unique tag=\"name\"/>"
+            "   <leaf name=\"uid\"> <type name=\"int32\"/> </leaf>"
+            "   <leaf name=\"name\"> <type name=\"string\"/> </leaf>"
+            "   <leaf name=\"group\"> <type name=\"string\"/> </leaf>"
+            "</list>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 1, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE | LYS_KEY, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YIN("T5",
+            "<list name=\"rule\">"
+            "   <key value=\"id\"/>"
+            "   <unique tag=\"name\"/>"
+            "   <unique tag=\"ip port\"/>"
+            "   <leaf name=\"id\"> <type name=\"int32\"/></leaf>"
+            "   <leaf name=\"name\"> <type name=\"string\"/> </leaf>"
+            "   <leaf name=\"ip\"> <type name=\"string\"/> </leaf>"
+            "   <leaf name=\"port\"> <type name=\"int16\"/> </leaf>"
+            "</list>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "rule", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 2, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "id", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "ip", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "port", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    /* test error */
+    schema = MODULE_CREATE_YIN("TERR_0",
+            "<list name=\"user\">"
+            "   <key value=\"uid\"/>"
+            "   <min-elements value=\"10\"/>"
+            "   <max-elements value=\"-1\"/>"
+            "   <leaf name=\"uid\"> <type name=\"int32\"> </leaf>"
+            "</list>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_0\" failed.", NULL,
+            "Invalid value \"-1\" of \"value\" attribute in \"max-elements\" element.", "Line number 8.");
+
+    schema = MODULE_CREATE_YIN("TERR_0",
+            "<list name=\"user\">"
+            "   <key value=\"uid\"/>"
+            "   <min-elements value=\"10\"/>"
+            "   <max-elements value=\"4294967298\"/>"
+            "   <leaf name=\"uid\">   <type name=\"int32\"/>   </leaf>"
+            "   <leaf name=\"name\">  <type name=\"string\"/>  </leaf>"
+            "   <leaf name=\"group\"> <type name=\"string\"/>  </leaf>"
+            "</list>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_0\" failed.", NULL,
+            "Value \"4294967298\" of \"value\" attribute in \"max-elements\" element is out of bounds.", "Line number 8.");
+
+    schema = MODULE_CREATE_YIN("TERR_0",
+            "<list name=\"user\">"
+            "   <key value=\"uid\"/>"
+            "   <min-elements value=\"20\"/>"
+            "   <max-elements value=\"10\"/>"
+            "   <leaf name=\"uid\">   <type name=\"int32\"/>  </leaf>"
+            "   <leaf name=\"name\">  <type name=\"string\"/> </leaf>"
+            "   <leaf name=\"group\"> <type name=\"string\"/> </leaf>"
+            "</list>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_0\" failed.", NULL,
+            "Invalid combination of min-elements and max-elements: min value 20 is bigger than the max value 10.", "Line number 8.");
+
+    schema = MODULE_CREATE_YIN("TERR_0",
+            "<list name=\"user\">"
+            "   <key value=\"uid\"/>"
+            "   <min-elements value=\"-1\"/>"
+            "   <max-elements value=\"20\"/>"
+            "   <leaf name=\"uid\">   <type name=\"int32\"/>  </leaf>"
+            "   <leaf name=\"name\">  <type name=\"string\"/> </leaf>"
+            "   <leaf name=\"group\"> <type name=\"string\"/> </leaf>"
+            "</list>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_0\" failed.", NULL,
+            "Value \"-1\" of \"value\" attribute in \"min-elements\" element is out of bounds.", "Line number 8.");
+
+    schema = MODULE_CREATE_YIN("TERR_0",
+            "<list name=\"user\">"
+            "   <key  value=\"uid\"/>"
+            "   <key  value=\"name\"/>"
+            "   <leaf name=\"uid\">   <type name=\"int32\"/>  </leaf>"
+            "   <leaf name=\"name\">  <type name=\"string\"/> </leaf>"
+            "   <leaf name=\"group\"> <type name=\"string\"/> </leaf>"
+            "</list>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_0\" failed.", NULL,
+            "Redefinition of \"key\" sub-element in \"list\" element.", "Line number 8.");
+
+    schema = MODULE_CREATE_YIN("T6",
+            "<list name=\"user\">"
+            "   <config value=\"false\"/>"
+            "   <leaf name=\"uid\">  <type name=\"int32\"/>  </leaf>"
+            "   <leaf name=\"name\"> <type name=\"string\"/> </leaf>"
+            "   <leaf name=\"group\"><type name=\"string\"/> </leaf>"
+            "</list>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_R | LYS_STATUS_CURR | LYS_ORDBY_USER | LYS_KEYLESS | LYS_SET_CONFIG, \
+            1, "user", 0, 0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 0, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_R | LYS_STATUS_CURR, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_R | LYS_STATUS_CURR,  1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_R | LYS_STATUS_CURR, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YIN("T7",
+            "<list name=\"user\">"
+            "   <key value=\"uid\"/>"
+            "   <unique tag=\"name\"/>"
+            "   <ordered-by value=\"user\"/>"
+            "   <leaf name=\"uid\">  <type name=\"int32\"/>  </leaf>"
+            "   <leaf name=\"name\"> <type name=\"string\"/> </leaf>"
+            "   <leaf name=\"group\"><type name=\"string\"/> </leaf>"
+            "</list>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_USER, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 1, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YIN("T8",
+            "<list name=\"user\">"
+            "   <key value=\"uid\"/>"
+            "   <unique tag=\"name\"/>"
+            "   <ordered-by value=\"system\"/>"
+            "   <leaf name=\"uid\">  <type name=\"int32\"/>  </leaf>"
+            "   <leaf name=\"name\"> <type name=\"string\"/> </leaf>"
+            "   <leaf name=\"group\"><type name=\"string\"/> </leaf>"
+            "</list>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 1, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YIN("TERROR0",
+            "<list name=\"user\">"
+            "   <key value=\"uid\"/>"
+            "   <unique tag=\"name\"/>"
+            "   <ordered-by value=\"systeme\"/>"
+            "   <leaf name=\"uid\">  <type name=\"int32\"/>  </leaf>"
+            "   <leaf name=\"name\"> <type name=\"string\"/> </leaf>"
+            "   <leaf name=\"group\"><type name=\"string\"/> </leaf>"
+            "</list>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERROR0\" failed.", NULL,
+            "Invalid value \"systeme\" of \"value\" attribute in \"ordered-by\" element. Valid values are \"system\" and \"user\".",
+            "Line number 8.");
+
+    schema = MODULE_CREATE_YIN("T_DEFS1",
+            "<list name=\"user\">"
+            "   <key value=\"uid\"/>"
+            "   <unique tag=\"name\"/>"
+            "   <ordered-by value=\"system\"/>"
+            "   <leaf name=\"uid\">  <type name=\"int32\"/> </leaf>"
+            "   <leaf name=\"name\"> <type name=\"string\"/> </leaf>"
+            "   <leaf name=\"group\"><type name=\"string\"/> <default value=\"ath\"/> </leaf>"
+            "</list>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LIST(lysc_leaf, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM, 1, "user", 0, \
+            0, 0, 0, 0, 1, 0xffffffff, 0, 0, 0, 1, 0);
+    lysc_node = lysc_leaf->child;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_KEY, 1, "uid", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_UNIQUE, 1, "name", 1, LYS_LEAF, 1, 0, 0, 0);
+    lysc_node = lysc_node->next;
+    CHECK_LYSC_NODE(lysc_node, 0, 0, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_SET_DFLT, 1, "group", 0, LYS_LEAF, 1, 0, 0, 0);
+
+}
+
+static void
+test_schema_print(void **state)
+{
+    const char *schema_yang, *schema_yin;
+    char *printed;
+    struct lys_module *mod;
+
+    /* test print yang to yin */
+    schema_yang = MODULE_CREATE_YANG("PRINT0",
+            "list user {"
+            "   min-elements 10;"
+            "   max-elements 20;"
+            "   key \"uid name\";"
+            "   unique name;"
+            "   leaf uid{type int32;}"
+            "   leaf name{type string;}"
+            "   leaf group{type string;}"
+            "}");
+    schema_yin = MODULE_CREATE_YIN("PRINT0",
+            "  <list name=\"user\">\n"
+            "    <key value=\"uid name\"/>\n"
+            "    <unique tag=\"name\"/>\n"
+            "    <min-elements value=\"10\"/>\n"
+            "    <max-elements value=\"20\"/>\n"
+            "    <leaf name=\"uid\">\n"
+            "      <type name=\"int32\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"name\">\n"
+            "      <type name=\"string\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"group\">\n"
+            "      <type name=\"string\"/>\n"
+            "    </leaf>\n"
+            "  </list>\n");
+
+    UTEST_ADD_MODULE(schema_yang, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, schema_yin);
+    free(printed);
+
+    /* test print yin to yang */
+    schema_yang = MODULE_CREATE_YANG("PRINT1",
+            "\n"
+            "  list user {\n"
+            "    key \"uid name\";\n"
+            "    unique \"name\";\n"
+            "    min-elements 10;\n"
+            "    max-elements 20;\n"
+            "    leaf uid {\n"
+            "      type int32;\n"
+            "    }\n"
+            "    leaf name {\n"
+            "      type string;\n"
+            "    }\n"
+            "    leaf group {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n");
+    schema_yin = MODULE_CREATE_YIN("PRINT1",
+            "  <list name=\"user\">\n"
+            "    <key value=\"uid name\"/>\n"
+            "    <unique tag=\"name\"/>\n"
+            "    <min-elements value=\"10\"/>\n"
+            "    <max-elements value=\"20\"/>\n"
+            "    <leaf name=\"uid\">\n"
+            "      <type name=\"int32\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"name\">\n"
+            "      <type name=\"string\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"group\">\n"
+            "      <type name=\"string\"/>\n"
+            "    </leaf>\n"
+            "  </list>\n");
+
+    UTEST_ADD_MODULE(schema_yin, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, schema_yang);
+    free(printed);
+
+    /* test no segmentation fold due ignoring default value */
+    schema_yang = MODULE_CREATE_YANG("PRINT2", "list user {"
+            "key uid;"
+            "leaf uid{type int32; default \"25\";}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+
+    UTEST_ADD_MODULE(schema_yang, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    free(printed);
+}
+
+static void
+test_xml(void **state)
+{
+    struct lyd_node *tree;
+    const char *data, *schema;
+    struct lyd_node_inner *list_tree;
+    struct lyd_node_term *list_leaf;
+
+    schema = MODULE_CREATE_YANG("T0", "list user {"
+            "key uid;"
+            "unique \"name group\";"
+            "leaf uid{type uint32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* add data */
+    data =
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>1</uid>"
+            "   <name>Martin Novák</name>"
+            "   <group>User</group>"
+            "</user>";
+    /* check first item */
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    list_tree = (void *)tree;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "0", 0);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Tomáš Novák");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "User");
+    /* check second item */
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 0, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "1", 1);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Martin Novák");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "User");
+    lyd_free_all(tree);
+
+    /* add data */
+    data =
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>1</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>";
+    /* check first item */
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    list_tree = (void *)tree;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "0", 0);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Tomáš Novák");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "User");
+    /* check second item */
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 0, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "1", 1);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Tomáš Novák");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "Admin");
+    lyd_free_all(tree);
+
+    data =
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>";
+    /* check first item */
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    assert_null(tree);
+    CHECK_LOG_CTX("Duplicate instance of \"user\".",
+            "Data location \"/T0:user[uid='0']\".");
+
+    data =
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>1</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>";
+    /* check first item */
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    assert_null(tree);
+    CHECK_LOG_CTX("Unique data leaf(s) \"name group\" not satisfied in \"/T0:user[uid='0']\" and \"/T0:user[uid='1']\".",
+            "Data location \"/T0:user[uid='1']\".");
+
+    /* double key */
+    schema = MODULE_CREATE_YANG("T1", "list user {"
+            "key \"uid group\";"
+            "leaf uid{type uint32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    data =
+            "<user xmlns=\"urn:tests:T1\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T1\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>";
+    /* check first item */
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    list_tree = (void *)tree;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "0", 0);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "User");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "Tomáš Novák");
+    /* check second item */
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 0, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "0", 0);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Admin");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "Tomáš Novák");
+    lyd_free_all(tree);
+
+    data =
+            "<user xmlns=\"urn:tests:T1\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T1\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>";
+    /* check first item */
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    assert_null(tree);
+    CHECK_LOG_CTX("Duplicate instance of \"user\".",
+            "Data location \"/T1:user[uid='0'][group='User']\".");
+
+    /* min elements max elements */
+    schema = MODULE_CREATE_YANG("T2",
+            "list user {"
+            "   key uid;"
+            "   min-elements 3;"
+            "   max-elements 5;"
+            "   leaf uid{type uint32;}"
+            "   leaf name{type string;}"
+            "   leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    data =
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>1</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>2</uid>"
+            "   <name>Tomáš Jak</name>"
+            "   <group>Admin</group>"
+            "</user>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    list_tree = (void *)tree;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "0", 0);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Tomáš Novák");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "User");
+    /* check second item */
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "1", 1);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Tomáš Novák");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "Admin");
+    /* check third item */
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 0, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "2", 2);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Tomáš Jak");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "Admin");
+    lyd_free_all(tree);
+
+    data =
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>1</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>2</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>3</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>4</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    list_tree = (void *)tree;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 0, 0, 0, 1);
+    lyd_free_all(tree);
+
+    /* check wrong number of items */
+    data =
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>1</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    assert_null(tree);
+    CHECK_LOG_CTX("Too few \"user\" instances.",
+            "Schema location \"/T2:user\".");
+
+    data =
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>1</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>2</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>3</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>4</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T2\">"
+            "   <uid>5</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    assert_null(tree);
+    CHECK_LOG_CTX("Too many \"user\" instances.",
+            "Data location \"/T2:user[uid='5']\".");
+
+    /* empty list */
+    schema = MODULE_CREATE_YANG("T_EMPTY_LIST",
+            "container user_list {"
+            "   list user {"
+            "   key uid;"
+            "   unique \"name group\";"
+            "   leaf uid{type uint32;}"
+            "   leaf name{type string;}"
+            "   leaf group{type string;}"
+            "}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* empty list */
+    data = "<user_list xmlns=\"urn:tests:T_EMPTY_LIST\"/>";
+    /* check first item */
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    list_tree = (void *)tree;
+    CHECK_LYD_NODE_INNER(list_tree, 0, 0, 0, 1, 0, 0, 0, 1);
+    lyd_free_all(tree);
+}
+
+static void
+test_json(void **state)
+{
+    struct lyd_node *tree;
+    const char *data, *schema;
+    struct lyd_node_inner *list_tree;
+    struct lyd_node_term *list_leaf;
+
+    schema = MODULE_CREATE_YANG("T0", "list user {"
+            "key uid;"
+            "unique \"name group\";"
+            "leaf uid{type uint32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* add data */
+    data =
+            "{\"T0:user\": ["
+            "   {\"uid\":0, \"name\":\"Jan Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":1, \"name\":\"Martin Novák\", \"group\":\"User\"}"
+            "]}";
+
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    list_tree = (void *)tree;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "0", 0);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Jan Kuba");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "User");
+    /* check second item */
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 0, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "1", 1);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Martin Novák");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "User");
+    lyd_free_all(tree);
+
+    /* Unique */
+    data =
+            "{\"T0:user\": ["
+            "   {\"uid\":0, \"name\":\"Jan Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":1, \"name\":\"Jan Kuba\", \"group\":\"Admin\"}"
+            "]}";
+
+    /* check first item */
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    list_tree = (void *)tree;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "0", 0);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Jan Kuba");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "User");
+    /* check second item */
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 0, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "1", 1);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Jan Kuba");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "Admin");
+    lyd_free_all(tree);
+
+    data =
+            "{\"T0:user\": ["
+            "   {\"uid\":0, \"name\":\"Jan Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":0, \"name\":\"Jan Kuba\", \"group\":\"Admin\"}"
+            "]}";
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    assert_null(tree);
+    CHECK_LOG_CTX("Duplicate instance of \"user\".",
+            "Data location \"/T0:user[uid='0']\".");
+
+    data =
+            "{\"T0:user\": ["
+            "   {\"uid\":0, \"name\":\"Jan Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":1, \"name\":\"Jan Kuba\", \"group\":\"User\"}"
+            "]}";
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    assert_null(tree);
+    CHECK_LOG_CTX("Unique data leaf(s) \"name group\" not satisfied in \"/T0:user[uid='0']\" and \"/T0:user[uid='1']\".",
+            "Data location \"/T0:user[uid='1']\".");
+
+    /* double key */
+    schema = MODULE_CREATE_YANG("T1", "list user {"
+            "key \"uid group\";"
+            "leaf uid{type uint32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    data =
+            "{\"T1:user\": ["
+            "   {\"uid\":0, \"name\":\"Jan Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":0, \"name\":\"Jan Kuba\", \"group\":\"Admin\"}"
+            "]}";
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    list_tree = (void *)tree;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "0", 0);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "User");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "Jan Kuba");
+    /* check second item */
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 0, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "0", 0);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Admin");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "Jan Kuba");
+    lyd_free_all(tree);
+
+    data =
+            "{\"T1:user\": ["
+            "   {\"uid\":0, \"name\":\"Jan Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":0, \"name\":\"Jan Kuba\", \"group\":\"User\"}"
+            "]}";
+    /* check first item */
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    assert_null(tree);
+    CHECK_LOG_CTX("Duplicate instance of \"user\".",
+            "Data location \"/T1:user[uid='0'][group='User']\".");
+
+    /* min elements max elements */
+    schema = MODULE_CREATE_YANG("T2",
+            "list user {"
+            "   key uid;"
+            "   min-elements 3;"
+            "   max-elements 5;"
+            "   leaf uid{type uint32;}"
+            "   leaf name{type string;}"
+            "   leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    data =
+            "{\"T2:user\": ["
+            "   {\"uid\":0, \"name\":\"Jan Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":1, \"name\":\"Antonín Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":2, \"name\":\"Tomáš Novák\", \"group\":\"Admin\"}"
+            "]}";
+
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    list_tree = (void *)tree;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "0", 0);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Jan Kuba");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "User");
+    /* check second item */
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "1", 1);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Antonín Kuba");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "User");
+    /* check third item */
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 0, 0, 0, 1);
+    list_leaf = (void *) list_tree->child;
+    assert_string_equal(list_leaf->schema->name, "uid");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, UINT32, "2", 2);
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "name");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 1, 1, 1, STRING, "Tomáš Novák");
+    list_leaf = (void *) list_leaf->next;
+    assert_string_equal(list_leaf->schema->name, "group");
+    CHECK_LYD_NODE_TERM(list_leaf, 0, 0, 0, 1, 1, STRING, "Admin");
+    lyd_free_all(tree);
+
+    data =
+            "{\"T2:user\": ["
+            "   {\"uid\":0, \"name\":\"Jan Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":1, \"name\":\"Antonín Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":2, \"name\":\"Antonín Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":3, \"name\":\"Antonín Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":4, \"name\":\"Tomáš Novák\", \"group\":\"Admin\"}"
+            "]}";
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    list_tree = (void *)tree;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 1, 0, 0, 1);
+    list_tree = (void *) list_tree->next;
+    CHECK_LYD_NODE_INNER(list_tree, 1, 0, 0, 0, 0, 0, 0, 1);
+    lyd_free_all(tree);
+
+    /* check wrong number of items */
+    data =
+            "{\"T2:user\": ["
+            "   {\"uid\":0, \"name\":\"Jan Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":4, \"name\":\"Tomáš Novák\", \"group\":\"Admin\"}"
+            "]}";
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    assert_null(tree);
+    CHECK_LOG_CTX("Too few \"user\" instances.",
+            "Schema location \"/T2:user\".");
+
+    data =
+            "{\"T2:user\": ["
+            "   {\"uid\":0, \"name\":\"Jan Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":1, \"name\":\"Antonín Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":2, \"name\":\"Antonín Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":3, \"name\":\"Antonín Kuba\", \"group\":\"User\"},"
+            "   {\"uid\":4, \"name\":\"Tomáš Novák\", \"group\":\"Admin\"},"
+            "   {\"uid\":5, \"name\":\"Tomáš Novák\", \"group\":\"Admin\"}"
+            "]}";
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    assert_null(tree);
+    CHECK_LOG_CTX("Too many \"user\" instances.",
+            "Data location \"/T2:user[uid='5']\".");
+
+    schema = MODULE_CREATE_YANG("T_EMPTY_LIST",
+            "container user_list {"
+            "   list user {"
+            "   key uid;"
+            "   unique \"name group\";"
+            "   leaf uid{type uint32;}"
+            "   leaf name{type string;}"
+            "   leaf group{type string;}"
+            "}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* empty list */
+    data =
+            "{\"T_EMPTY_LIST:user_list\": {}"
+            "}";
+
+    /* check first item */
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    list_tree = (void *)tree;
+    CHECK_LYD_NODE_INNER(list_tree, 0, 0, 0, 1, 0, 0, 0, 1);
+    lyd_free_all(tree);
+}
+
+static void
+test_diff(void **state)
+{
+    const char *schema;
+    struct lyd_node *model_1, *model_2;
+    struct lyd_node *diff;
+    const char *data_1;
+    const char *data_2;
+    const char *diff_expected;
+
+    schema = MODULE_CREATE_YANG("T0", "list user {"
+            "key uid;"
+            "unique \"name group\";"
+            "leaf uid{type uint32;}"
+            "leaf name{type string;}"
+            "leaf group{type string;}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* delete item */
+    data_1 =
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>1</uid>"
+            "   <name>Martin Novák</name>"
+            "   <group>User</group>"
+            "</user>";
+
+    data_2 =
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>";
+
+    diff_expected =
+            "<user xmlns=\"urn:tests:T0\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\""
+            " yang:operation=\"delete\">"
+            "<uid>1</uid>"
+            "<name>Martin Novák</name>"
+            "<group>User</group>"
+            "</user>";
+    CHECK_PARSE_LYD_PARAM(data_1, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1);
+    CHECK_PARSE_LYD_PARAM(data_2, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_2);
+    assert_int_equal(LY_SUCCESS, lyd_diff_siblings(model_1, model_2, 0, &diff));
+    assert_non_null(diff);
+    CHECK_LYD_STRING_PARAM(diff, diff_expected, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    assert_int_equal(LY_SUCCESS, lyd_diff_apply_all(&model_1, diff));
+    CHECK_LYD(model_1, model_2);
+    lyd_free_all(model_1);
+    lyd_free_all(model_2);
+    lyd_free_all(diff);
+
+    /* add item */
+    data_1 =
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>";
+
+    data_2 =
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>1</uid>"
+            "   <name>Martin Novák</name>"
+            "   <group>User</group>"
+            "</user>";
+
+    diff_expected =
+            "<user xmlns=\"urn:tests:T0\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\""
+            " yang:operation=\"create\">"
+            "<uid>1</uid><name>Martin Novák</name><group>User</group>"
+            "</user>";
+    CHECK_PARSE_LYD_PARAM(data_1, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1);
+    CHECK_PARSE_LYD_PARAM(data_2, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_2);
+    assert_int_equal(LY_SUCCESS, lyd_diff_siblings(model_1, model_2, 0, &diff));
+    assert_non_null(diff);
+    CHECK_LYD_STRING_PARAM(diff, diff_expected, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    assert_int_equal(LY_SUCCESS, lyd_diff_apply_all(&model_1, diff));
+    CHECK_LYD(model_1, model_2);
+    lyd_free_all(model_1);
+    lyd_free_all(model_2);
+    lyd_free_all(diff);
+
+    /* diff one  */
+    data_1 =
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>1</uid>"
+            "   <name>Martin Novák</name>"
+            "   <group>User</group>"
+            "</user>";
+
+    data_2 =
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>Admin</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>1</uid>"
+            "   <name>Martin Novák</name>"
+            "   <group>User</group>"
+            "</user>";
+
+    diff_expected =
+            "<user xmlns=\"urn:tests:T0\" xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\""
+            " yang:operation=\"none\">"
+            "<uid>0</uid>"
+            "<group yang:operation=\"replace\" yang:orig-default=\"false\""
+            " yang:orig-value=\"User\">Admin</group></user>";
+    CHECK_PARSE_LYD_PARAM(data_1, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1);
+    CHECK_PARSE_LYD_PARAM(data_2, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_2);
+    assert_int_equal(LY_SUCCESS, lyd_diff_siblings(model_1, model_2, 0, &diff));
+    assert_non_null(diff);
+    CHECK_LYD_STRING_PARAM(diff, diff_expected, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    assert_int_equal(LY_SUCCESS, lyd_diff_apply_all(&model_1, diff));
+    CHECK_LYD(model_1, model_2);
+    lyd_free_all(model_1);
+    lyd_free_all(model_2);
+    lyd_free_all(diff);
+
+    /* diff same */
+    data_1 =
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>1</uid>"
+            "   <name>Martin Novák</name>"
+            "   <group>User</group>"
+            "</user>";
+
+    data_2 =
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "   <group>User</group>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>1</uid>"
+            "   <name>Martin Novák</name>"
+            "   <group>User</group>"
+            "</user>";
+
+    CHECK_PARSE_LYD_PARAM(data_1, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1);
+    CHECK_PARSE_LYD_PARAM(data_2, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_2);
+    assert_int_equal(LY_SUCCESS, lyd_diff_siblings(model_1, model_2, 0, &diff));
+    assert_null(diff);
+    assert_int_equal(LY_SUCCESS, lyd_diff_apply_all(&model_1, diff));
+    CHECK_LYD(model_1, model_2);
+    lyd_free_all(model_1);
+    lyd_free_all(model_2);
+    lyd_free_all(diff);
+}
+
+static void
+test_print(void **state)
+{
+
+    const char *schema;
+    const char *expected_string;
+
+    schema = MODULE_CREATE_YANG("T0",
+            "list user {"
+            "key uid;"
+            "leaf uid{type uint32;}"
+            "leaf name{type string;}"
+            "leaf group{type string; default \"User\";}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    struct lyd_node *model_1;
+    const char *data_1 =
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>0</uid>"
+            "   <name>Tomáš Novák</name>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T0\">"
+            "   <uid>1</uid>"
+            "   <name>Martin Novák</name>"
+            "   <group>Admin</group>"
+            "</user>";
+
+    LYD_TREE_CREATE(data_1, model_1);
+
+    /* XML */
+    expected_string =
+            "<user xmlns=\"urn:tests:T0\">"
+            "<uid>0</uid><name>Tomáš Novák</name>"
+            "</user>"
+            "<user xmlns=\"urn:tests:T0\">"
+            "<uid>1</uid><name>Martin Novák</name><group>Admin</group>"
+            "</user>";
+    CHECK_LYD_STRING_PARAM(model_1, expected_string, LYD_XML, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+
+    /* JSON */
+    expected_string = "{\"T0:user\":["
+            "{\"uid\":0,\"name\":\"Tomáš Novák\"},"
+            "{\"uid\":1,\"name\":\"Martin Novák\",\"group\":\"Admin\"}"
+            "]}";
+    CHECK_LYD_STRING_PARAM(model_1, expected_string, LYD_JSON, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+
+    lyd_free_all(model_1);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_schema_yang),
+        UTEST(test_schema_yin),
+        UTEST(test_schema_print),
+
+        UTEST(test_xml),
+        UTEST(test_json),
+        UTEST(test_diff),
+        UTEST(test_print),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/restriction/test_pattern.c b/tests/utests/restriction/test_pattern.c
new file mode 100644
index 0000000..94539d6
--- /dev/null
+++ b/tests/utests/restriction/test_pattern.c
@@ -0,0 +1,397 @@
+/**
+ * @file test_pattern.c
+ * @author Radek Iša <isa@cesnet.cz>
+ * @brief test for int8 values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* GLOBAL INCLUDE HEADERS */
+#include <ctype.h>
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+
+#define MODULE_CREATE_YIN(MOD_NAME, NODES) \
+    "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" \
+    "<module name=\"" MOD_NAME "\"\n" \
+    "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n" \
+    "        xmlns:pref=\"urn:tests:" MOD_NAME "\">\n" \
+    "  <yang-version value=\"1.1\"/>\n" \
+    "  <namespace uri=\"urn:tests:" MOD_NAME "\"/>\n" \
+    "  <prefix value=\"pref\"/>\n" \
+    NODES \
+    "</module>\n"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_SUCCESS_JSON(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "{\"" MOD_NAME ":port\":" DATA "}"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+#define TEST_ERROR_JSON(MOD_NAME, DATA) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "{\"" MOD_NAME ":port\":" DATA "}"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+static void
+test_schema_yang(void **state)
+{
+    const char *schema;
+    struct lys_module *mod;
+    struct lysc_node_leaf *lysc_leaf;
+    struct lysp_node_leaf *lysp_leaf;
+    struct lysc_pattern *pattern;
+
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type string {"
+            "pattern \"[A-Za-z]*\"{"
+            "description   \"pattern description\";"
+            "error-app-tag \"pattern err-apt-tag\";"
+            "error-message \"pattern error message\";}}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 1);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, "pattern description", "pattern err-apt-tag",
+            "pattern error message", "[A-Za-z]*", 0, 0, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x40, 0, 0, "string", 0, 1, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[0]), "\x6" "[A-Za-z]*", "pattern description",
+            "pattern err-apt-tag", "pattern error message", 0, NULL);
+
+    /* heredity */
+    schema = MODULE_CREATE_YANG("T1", "typedef my_type {type string {"
+            "pattern \"[A-Za-z]*\"{"
+            "description   \"pattern description\";"
+            "error-app-tag \"pattern err-apt-tag\";"
+            "error-message \"pattern error message\";}}}"
+            "leaf port {type my_type;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 1);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, "pattern description", "pattern err-apt-tag",
+            "pattern error message", "[A-Za-z]*", 0, 0, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "my_type", 0, 0, 1, 0, 0, 0);
+
+    /* heredity new pattern */
+    schema = MODULE_CREATE_YANG("T2", "typedef my_type {type string {"
+            "pattern \"[A-Za-z]*\"{"
+            "description   \"pattern description\";"
+            "error-app-tag \"pattern err-apt-tag\";"
+            "error-message \"pattern error message\";}}}"
+            "leaf port {type my_type{pattern \"[A-Z]*\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 2);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, "pattern description", "pattern err-apt-tag",
+            "pattern error message", "[A-Za-z]*", 0, 0, NULL);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[1];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "[A-Z]*", 0, 0, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x40, 0, 0, "my_type", 0, 1, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[0]), "\x6" "[A-Z]*", NULL, NULL, NULL, 0, NULL);
+
+    /* heredity new pattern */
+    schema = MODULE_CREATE_YANG("T3", "typedef my_type {type string {"
+            "pattern \"[A-Za-z]*\"{"
+            "   description   \"pattern 0 description\";"
+            "   error-app-tag \"pattern 0 err-apt-tag\";"
+            "   error-message \"pattern 0 error message\";}}}"
+            "leaf port {type my_type{pattern \"[A-Z]*\"{"
+            "   description   \"pattern 1 description\";"
+            "   error-app-tag \"pattern 1 err-apt-tag\";"
+            "   error-message \"pattern 1 error message\";"
+            "}}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 2);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, "pattern 0 description", "pattern 0 err-apt-tag",
+            "pattern 0 error message", "[A-Za-z]*", 0, 0, NULL);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[1];
+    CHECK_LYSC_PATTERN(pattern, "pattern 1 description", "pattern 1 err-apt-tag",
+            "pattern 1 error message", "[A-Z]*", 0, 0, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x40, 0, 0, "my_type", 0, 1, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[0]), "\x6" "[A-Z]*", "pattern 1 description",
+            "pattern 1 err-apt-tag", "pattern 1 error message", 0, NULL);
+}
+
+static void
+test_schema_yin(void **state)
+{
+    const char *schema;
+    struct lys_module *mod;
+    struct lysc_node_leaf *lysc_leaf;
+    struct lysp_node_leaf *lysp_leaf;
+    struct lysc_pattern *pattern;
+
+    schema = MODULE_CREATE_YIN("T0", "<leaf name=\"port\"> <type name=\"string\">"
+            "<pattern value=\"[A-Za-z]*\">"
+            "   <description><text>pattern description</text></description>"
+            "   <error-app-tag value=\"pattern err-apt-tag\"/>"
+            "   <error-message> <value>pattern error message</value></error-message>"
+            "</pattern></type></leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 1);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, "pattern description", "pattern err-apt-tag",
+            "pattern error message", "[A-Za-z]*", 0, 0, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x40, 0, 0, "string", 0, 1, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[0]), "\x6" "[A-Za-z]*", "pattern description",
+            "pattern err-apt-tag", "pattern error message", 0, NULL);
+
+    /* heredity */
+    schema = MODULE_CREATE_YIN("T1", "<typedef name=\"my_type\"> <type name=\"string\">"
+            "<pattern value=\"[A-Za-z]*\">"
+            "   <description><text>pattern description</text></description>"
+            "   <error-app-tag value=\"pattern err-apt-tag\"/>"
+            "   <error-message><value>pattern error message</value></error-message>"
+            "</pattern></type></typedef>"
+            "<leaf name=\"port\"><type name=\"my_type\"/></leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 1);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, "pattern description", "pattern err-apt-tag",
+            "pattern error message", "[A-Za-z]*", 0, 0, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "my_type", 0, 0, 1, 0, 0, 0);
+
+    /* heredity new pattern */
+    schema = MODULE_CREATE_YIN("T2", "<typedef name=\"my_type\"> <type name=\"string\">"
+            "<pattern value=\"[A-Za-z]*\">"
+            "   <description><text>pattern description</text></description>"
+            "   <error-app-tag value=\"pattern err-apt-tag\"/>"
+            "   <error-message><value>pattern error message</value></error-message>"
+            "</pattern></type></typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\"><pattern value=\"[A-Z]*\"/>"
+            "</type></leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 2);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, "pattern description", "pattern err-apt-tag",
+            "pattern error message", "[A-Za-z]*", 0, 0, NULL);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[1];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "[A-Z]*", 0, 0, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x40, 0, 0, "my_type", 0, 1, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[0]), "\x6" "[A-Z]*", NULL, NULL, NULL, 0, NULL);
+
+    /* heredity new pattern */
+    schema = MODULE_CREATE_YIN("T3", "<typedef name=\"my_type\"> <type name=\"string\">"
+            "<pattern value=\"[A-Za-z]*\">"
+            "   <description> <text>pattern 0 description</text></description>"
+            "   <error-app-tag value=\"pattern 0 err-apt-tag\"/>"
+            "   <error-message> <value>pattern 0 error message</value></error-message>"
+            "</pattern></type></typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\">"
+            "<pattern value=\"[A-Z]*\">"
+            "   <description><text>pattern 1 description</text></description>"
+            "   <error-app-tag value=\"pattern 1 err-apt-tag\"/>"
+            "   <error-message><value>pattern 1 error message</value></error-message>"
+            "</pattern></type></leaf>");
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 2);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, "pattern 0 description", "pattern 0 err-apt-tag",
+            "pattern 0 error message", "[A-Za-z]*", 0, 0, NULL);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[1];
+    CHECK_LYSC_PATTERN(pattern, "pattern 1 description", "pattern 1 err-apt-tag",
+            "pattern 1 error message", "[A-Z]*", 0, 0, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x40, 0, 0, "my_type", 0, 1, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[0]), "\x6" "[A-Z]*", "pattern 1 description",
+            "pattern 1 err-apt-tag", "pattern 1 error message", 0, NULL);
+}
+
+static void
+test_schema_print(void **state)
+{
+    const char *schema_yang, *schema_yin;
+    char *printed;
+    struct lys_module *mod;
+
+    /* test print yang to yin */
+    schema_yang = MODULE_CREATE_YANG("PRINT0", "leaf port {type string {"
+            "pattern \"[A-Z]*\"{"
+            "description   \"desc < \";"
+            "error-app-tag \"err-apt-tag <\";"
+            "error-message \"error message <\";}}}");
+
+    schema_yin = MODULE_CREATE_YIN("PRINT0",
+            "  <leaf name=\"port\">\n"
+            "    <type name=\"string\">\n"
+            "      <pattern value=\"[A-Z]*\">\n"
+            "        <error-message>\n"
+            "          <value>error message &lt;</value>\n"
+            "        </error-message>\n"
+            "        <error-app-tag value=\"err-apt-tag &lt;\"/>\n"
+            "        <description>\n"
+            "          <text>desc &lt; </text>\n"
+            "        </description>\n"
+            "      </pattern>\n"
+            "    </type>\n"
+            "  </leaf>\n");
+
+    UTEST_ADD_MODULE(schema_yang, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, schema_yin);
+    free(printed);
+
+    /* test print yin to yang */
+    schema_yang = MODULE_CREATE_YANG("PRINT1",
+            "\n"
+            "  leaf port {\n"
+            "    type string {\n"
+            "      pattern \"[A-Z]*\" {\n"
+            "        error-message\n"
+            "          \"error message <\";\n"
+            "        error-app-tag \"err-apt-tag <\";\n"
+            "        description\n"
+            "          \"desc < \";\n"
+            "      }\n"
+            "    }\n"
+            "  }\n");
+
+    schema_yin = MODULE_CREATE_YIN("PRINT1",
+            "  <leaf name=\"port\">\n"
+            "    <type name=\"string\">\n"
+            "      <pattern value=\"[A-Z]*\">\n"
+            "        <error-message>\n"
+            "          <value>error message &lt;</value>\n"
+            "        </error-message>\n"
+            "        <error-app-tag value=\"err-apt-tag &lt;\"/>\n"
+            "        <description>\n"
+            "          <text>desc &lt; </text>\n"
+            "        </description>\n"
+            "      </pattern>\n"
+            "    </type>\n"
+            "  </leaf>\n");
+
+    UTEST_ADD_MODULE(schema_yin, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, schema_yang);
+    free(printed);
+}
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("TPATTERN_0", "typedef my_type {type string {"
+            "pattern \"[A-Za-z]*\"{"
+            "   description   \"pattern 0 description\";"
+            "   error-app-tag \"pattern 0 err-apt-tag\";"
+            "   error-message \"pattern 0 error message\";}}}"
+            "leaf port {type my_type{pattern \"[A-Z]*\"{"
+            "   description   \"pattern 1 description\";"
+            "   error-app-tag \"pattern 1 err-apt-tag\";"
+            "   error-message \"pattern 1 error message\";"
+            "}}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* test success */
+    TEST_SUCCESS_XML("TPATTERN_0", "AHOJ", STRING, "AHOJ");
+    /* test print error */
+    TEST_ERROR_XML("TPATTERN_0", "T128");
+    CHECK_LOG_CTX("pattern 0 error message",
+            "Schema location \"/TPATTERN_0:port\", line number 1.");
+    TEST_ERROR_XML("TPATTERN_0", "ahoj");
+    CHECK_LOG_CTX("pattern 1 error message",
+            "Schema location \"/TPATTERN_0:port\", line number 1.");
+
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_schema_yang),
+        UTEST(test_schema_yin),
+        UTEST(test_schema_print),
+        UTEST(test_data_xml),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/restriction/test_range.c b/tests/utests/restriction/test_range.c
new file mode 100644
index 0000000..f202b6c
--- /dev/null
+++ b/tests/utests/restriction/test_range.c
@@ -0,0 +1,431 @@
+/**
+ * @file test_range.c
+ * @author Radek Iša <isa@cesnet.cz>
+ * @brief test for int8 values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* GLOBAL INCLUDE HEADERS */
+#include <ctype.h>
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+
+#define MODULE_CREATE_YIN(MOD_NAME, NODES) \
+    "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" \
+    "<module name=\"" MOD_NAME "\"\n" \
+    "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n" \
+    "        xmlns:pref=\"urn:tests:" MOD_NAME "\">\n" \
+    "  <yang-version value=\"1.1\"/>\n" \
+    "  <namespace uri=\"urn:tests:" MOD_NAME "\"/>\n" \
+    "  <prefix value=\"pref\"/>\n" \
+    NODES \
+    "</module>\n"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_SUCCESS_JSON(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "{\"" MOD_NAME ":port\":" DATA "}"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+#define TEST_ERROR_JSON(MOD_NAME, DATA) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "{\"" MOD_NAME ":port\":" DATA "}"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+static void
+test_schema_yang(void **state)
+{
+    const char *schema;
+    struct lys_module *mod;
+    struct lysc_node_leaf *lysc_leaf;
+    struct lysp_node_leaf *lysp_leaf;
+    struct lysc_range *range;
+
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type int8 {"
+            "range \"0 .. 50 | 127\"{"
+            "description   \"description test\";"
+            "error-app-tag \"err-apt-tag\";"
+            "error-message \"error message\";}}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, "description test", "err-apt-tag", "error message", 0, 2, NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "0 .. 50 | 127", "description test", "err-apt-tag", "error message", 0, NULL);
+
+    /* heredity */
+    schema = MODULE_CREATE_YANG("T1", "typedef my_type {type uint16 {"
+            "range \"0 .. 100\"{"
+            "description   \"percentage\";"
+            "error-app-tag \"err-apt-tag\";"
+            "error-message \"error message\";}}}"
+            "leaf port {type my_type;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_UINT16, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, "percentage", "err-apt-tag", "error message", 0, 1, NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "my_type", 0, 0, 1, 0, 0, 0);
+
+    /* heredity new range */
+    schema = MODULE_CREATE_YANG("T2", "typedef my_type {type uint16 {"
+            "range \"0 .. 100\"{"
+            "description   \"percentage\";"
+            "error-app-tag \"err-apt-tag\";"
+            "error-message \"error message\";}}}"
+            "leaf port {type my_type{range \"0 .. 20\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_UINT16, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 1, NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "my_type", 0, 0, 1, 1, 0, 0);
+
+    /* change */
+    schema = MODULE_CREATE_YANG("T3", "typedef my_type {type uint16 {"
+            "range \"0 .. 100\"{"
+            "description   \"percentage\";"
+            "error-app-tag \"err-apt-tag\";"
+            "error-message \"error message\";}}}"
+            "leaf port {type my_type{"
+            "   range \"0 .. 50\"{"
+            "   description   \"description 0-50\";"
+            "   error-app-tag \"err-apt-tag 0-50\";"
+            "   error-message \"error message 0-50\";}}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_UINT16, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, "description 0-50", "err-apt-tag 0-50", "error message 0-50", 0, 1, NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "my_type", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "0 .. 50", "description 0-50", "err-apt-tag 0-50", "error message 0-50", 0, NULL);
+
+}
+
+static void
+test_schema_yin(void **state)
+{
+    const char *schema;
+    struct lys_module *mod;
+    struct lysc_node_leaf *lysc_leaf;
+    struct lysp_node_leaf *lysp_leaf;
+    struct lysc_range *range;
+
+    schema = MODULE_CREATE_YIN("T0", "<leaf name=\"port\">"
+            "<type name=\"int64\">"
+            "<range value = \"0 .. 50 | 256\">"
+            "   <description>"
+            "    <text>desc</text>\n"
+            "  </description>\n"
+            "<error-app-tag value=\"text &lt; tag\"/>"
+            "   <error-message>"
+            "       <value>yin error message &lt;</value>\n"
+            "   </error-message>\n"
+            "</range>"
+            "</type>"
+            "</leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT64, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, "desc", "text < tag", "yin error message <", 0, 2, NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int64", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "0 .. 50 | 256", "desc", "text < tag", "yin error message <", 0, NULL);
+
+    /* heredity */
+    schema = MODULE_CREATE_YIN("T1", "<typedef name=\"my_type\">"
+            "<type name=\"int16\">"
+            "<range value = \"0 .. 50\">"
+            "   <description>"
+            "    <text>percentage</text>\n"
+            "  </description>\n"
+            "<error-app-tag value=\"text &lt; tag\"/>"
+            "   <error-message>"
+            "       <value>yin error message &lt;</value>\n"
+            "   </error-message>\n"
+            "</range>"
+            "</type>"
+            "</typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\"/> </leaf>");
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT16, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, "percentage", "text < tag", "yin error message <", 0, 1, NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "my_type", 0, 0, 1, 0, 0, 0);
+
+    /* heredity new range */
+    schema = MODULE_CREATE_YIN("T2", "<typedef name=\"my_type\">"
+            "<type name=\"int32\">"
+            "<range value = \"0 .. 100\">"
+            "   <description>"
+            "       <text>percentage</text>\n"
+            "   </description>\n"
+            "   <error-app-tag value=\"text &lt; tag\"/>"
+            "      <error-message>"
+            "          <value>yin error message &lt;</value>\n"
+            "      </error-message>\n"
+            "   </range>"
+            "   </type>"
+            "</typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\">"
+            "   <range value = \"0 .. 50\"/>"
+            "</type></leaf>");
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT32, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 1, NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "my_type", 0, 0, 1, 1, 0, 0);
+
+    /* change */
+    schema = MODULE_CREATE_YIN("T3", "<typedef name=\"my_type\">"
+            "<type name=\"int32\">"
+            "<range value = \"0 .. 100\">"
+            "   <description>"
+            "       <text>percentage</text>\n"
+            "   </description>\n"
+            "   <error-app-tag value=\"text &lt; tag\"/>"
+            "      <error-message>"
+            "          <value>yin error message &lt;</value>\n"
+            "      </error-message>\n"
+            "   </range>"
+            "   </type>"
+            "</typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\">"
+            "   <range value = \"0 .. 50\">"
+            "   <description>"
+            "       <text>percentage 0-50</text>\n"
+            "   </description>\n"
+            "   <error-app-tag value=\"text tag 0-50\"/>"
+            "      <error-message>"
+            "          <value>yin error message 0-50</value>\n"
+            "      </error-message>\n"
+            "   </range>"
+            "</type></leaf>");
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT32, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, "percentage 0-50", "text tag 0-50", "yin error message 0-50", 0, 1, NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "my_type", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "0 .. 50", "percentage 0-50", "text tag 0-50", "yin error message 0-50", 0, NULL);
+
+}
+
+static void
+test_schema_print(void **state)
+{
+    const char *schema_yang, *schema_yin;
+    char *printed;
+    struct lys_module *mod;
+
+    /* test print yang to yin */
+    schema_yang = MODULE_CREATE_YANG("PRINT0", "leaf port {type int32 {"
+            "range \"0 .. 50\"{"
+            "description   \"desc < \";"
+            "error-app-tag \"err-apt-tag <\";"
+            "error-message \"error message <\";}}}");
+
+    schema_yin = MODULE_CREATE_YIN("PRINT0",
+            "  <leaf name=\"port\">\n"
+            "    <type name=\"int32\">\n"
+            "      <range value=\"0 .. 50\">\n"
+            "        <error-message>\n"
+            "          <value>error message &lt;</value>\n"
+            "        </error-message>\n"
+            "        <error-app-tag value=\"err-apt-tag &lt;\"/>\n"
+            "        <description>\n"
+            "          <text>desc &lt; </text>\n"
+            "        </description>\n"
+            "      </range>\n"
+            "    </type>\n"
+            "  </leaf>\n");
+
+    UTEST_ADD_MODULE(schema_yang, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, schema_yin);
+    free(printed);
+
+    /* test print yin to yang */
+    schema_yang = MODULE_CREATE_YANG("PRINT1",
+            "\n"
+            "  leaf port {\n"
+            "    type int32 {\n"
+            "      range \"0 .. 50\" {\n"
+            "        error-message\n"
+            "          \"error message <\";\n"
+            "        error-app-tag \"err-apt-tag <\";\n"
+            "        description\n"
+            "          \"desc < \";\n"
+            "      }\n"
+            "    }\n"
+            "  }\n");
+
+    schema_yin = MODULE_CREATE_YIN("PRINT1",
+            "  <leaf name=\"port\">\n"
+            "    <type name=\"int32\">\n"
+            "      <range value=\"0 .. 50\">\n"
+            "        <error-message>\n"
+            "          <value>error message &lt;</value>\n"
+            "        </error-message>\n"
+            "        <error-app-tag value=\"err-apt-tag &lt;\"/>\n"
+            "        <description>\n"
+            "          <text>desc &lt; </text>\n"
+            "        </description>\n"
+            "      </range>\n"
+            "    </type>\n"
+            "  </leaf>\n");
+
+    UTEST_ADD_MODULE(schema_yin, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, schema_yang);
+    free(printed);
+}
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("TRANGE_0", "leaf port {type int8 {"
+            "range \"0 .. 50 | 126\"{"
+            "description   \"description test\";"
+            "error-app-tag \"err-apt-tag\";"
+            "error-message \"error message\";}}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* test success */
+    TEST_SUCCESS_XML("TRANGE_0", "126", INT8, "126", 126);
+    /* test print error */
+    TEST_ERROR_XML("TRANGE_0", "-1");
+    CHECK_LOG_CTX("error message",
+            "Schema location \"/TRANGE_0:port\", line number 1.");
+    TEST_ERROR_XML("TRANGE_0", "51");
+    CHECK_LOG_CTX("error message",
+            "Schema location \"/TRANGE_0:port\", line number 1.");
+    TEST_ERROR_XML("TRANGE_0", "127");
+    CHECK_LOG_CTX("error message",
+            "Schema location \"/TRANGE_0:port\", line number 1.");
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("TRANGE_1", "leaf port {type uint8 {"
+            "range \"30 .. 50 | 126\"{"
+            "description   \"description test\";"
+            "error-app-tag \"err-apt-tag\";"
+            "error-message \"error message\";}}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* test success */
+    TEST_SUCCESS_XML("TRANGE_1", "126", UINT8, "126", 126);
+    /* test print error */
+    TEST_ERROR_XML("TRANGE_1", "0");
+    CHECK_LOG_CTX("error message",
+            "Schema location \"/TRANGE_1:port\", line number 1.");
+    TEST_ERROR_XML("TRANGE_1", "51");
+    CHECK_LOG_CTX("error message",
+            "Schema location \"/TRANGE_1:port\", line number 1.");
+    TEST_ERROR_XML("TRANGE_1", "127");
+    CHECK_LOG_CTX("error message",
+            "Schema location \"/TRANGE_1:port\", line number 1.");
+
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_schema_yang),
+        UTEST(test_schema_yin),
+        UTEST(test_schema_print),
+        UTEST(test_data_xml),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/schema/test_printer_tree.c b/tests/utests/schema/test_printer_tree.c
new file mode 100644
index 0000000..c076ece
--- /dev/null
+++ b/tests/utests/schema/test_printer_tree.c
@@ -0,0 +1,2405 @@
+/*
+ * @file test_printer_tree.c
+ * @author: Adam Piecek <piecek@cesnet.cz>
+ * @brief unit tests for functions from printer_tree.c
+ *
+ * Copyright (c) 2019-2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "common.h"
+#include "context.h"
+#include "out.h"
+#include "printer_schema.h"
+#include "tree_schema.h"
+
+#define TEST_LOCAL_SETUP \
+    char *printed; \
+    struct lys_module *mod; \
+    const char *orig; \
+    const char *expect; \
+    assert_int_equal(LY_SUCCESS, ly_out_new_memory(&printed, 0, &UTEST_OUT));
+
+#define TEST_LOCAL_PRINT(MOD, LINE_LENGTH) \
+    assert_int_equal(LY_SUCCESS, lys_print_module(UTEST_OUT, MOD, LYS_OUT_TREE, LINE_LENGTH, 0));
+
+#define TEST_LOCAL_TEARDOWN \
+    ly_out_free(UTEST_OUT, NULL, 1);
+
+static void
+base_sections(void **state)
+{
+    TEST_LOCAL_SETUP;
+    struct lys_module *modxx;
+
+    orig =
+            "module a01xx {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"xx:y\";\n"
+            "  prefix xx;\n"
+            "  container c;\n"
+            "  container d;\n"
+            "}\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &modxx);
+
+    /* module with import statement */
+    orig =
+            "module a01 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "\n"
+            "  import a01xx {\n"
+            "    prefix xx;\n"
+            "  }\n"
+            "\n"
+            "  grouping g1;\n"
+            "\n"
+            "  grouping g2;\n"
+            "  container g;\n"
+            "  augment \"/xx:c\" {\n"
+            "    container e;\n"
+            "  }\n"
+            "  augment \"/xx:d\" {\n"
+            "    container f;\n"
+            "  }\n"
+            "  rpc rpc1;\n"
+            "  rpc rpc2;\n"
+            "  notification n1;\n"
+            "  notification n2;\n"
+            "}\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+
+    /* from pyang */
+    expect =
+            "module: a01\n"
+            "  +--rw g\n"
+            "\n"
+            "  augment /xx:c:\n"
+            "    +--rw e\n"
+            "  augment /xx:d:\n"
+            "    +--rw f\n"
+            "\n"
+            "  rpcs:\n"
+            "    +---x rpc1\n"
+            "    +---x rpc2\n"
+            "\n"
+            "  notifications:\n"
+            "    +---n n1\n"
+            "    +---n n2\n"
+            "\n"
+            "  grouping g1\n"
+            "  grouping g2\n";
+
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+
+    /* from pyang */
+    expect =
+            "module: a01\n"
+            "  +--rw g\n"
+            "\n"
+            "  augment /xx:c:\n"
+            "    +--rw e\n"
+            "  augment /xx:d:\n"
+            "    +--rw f\n"
+            "\n"
+            "  rpcs:\n"
+            "    +---x rpc1\n"
+            "    +---x rpc2\n"
+            "\n"
+            "  notifications:\n"
+            "    +---n n1\n"
+            "    +---n n2\n";
+
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+
+    /* from pyang */
+    expect =
+            "module: a01xx\n"
+            "  +--rw c\n"
+            "  |  +--rw x:e\n"
+            "  +--rw d\n"
+            "     +--rw x:f\n";
+
+    TEST_LOCAL_PRINT(modxx, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+node_status(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a02 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  container l {\n"
+            "    status current;\n"
+            "  }\n"
+            "  container m {\n"
+            "    status deprecated;\n"
+            "  }\n"
+            "  container n {\n"
+            "    status obsolete;\n"
+            "  }\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a02\n"
+            "  +--rw l\n"
+            "  x--rw m\n"
+            "  o--rw n\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+node_config_flags(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a03 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  container l {\n"
+            "    config true;\n"
+            "  }\n"
+            "  container m {\n"
+            "    config false;\n"
+            "  }\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a03\n"
+            "  +--rw l\n"
+            "  +--ro m\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+node_rpcs_flags(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a04 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  container cont {\n"
+            "    action rpc1 {\n"
+            "\n"
+            "      input {\n"
+            "        leaf in {\n"
+            "          type string;\n"
+            "        }\n"
+            "      }\n"
+            "\n"
+            "      output {\n"
+            "        leaf out {\n"
+            "          type string;\n"
+            "        }\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a04\n"
+            "  +--rw cont\n"
+            "     +---x rpc1\n"
+            "        +---w input\n"
+            "        |  +---w in?   string\n"
+            "        +--ro output\n"
+            "           +--ro out?   string\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+node_grouping_flags(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a05 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "\n"
+            "  grouping g {\n"
+            "    leaf a {\n"
+            "      type string;\n"
+            "      config true;\n"
+            "    }\n"
+            "    leaf b {\n"
+            "      type string;\n"
+            "      config false;\n"
+            "    }\n"
+            "    leaf c {\n"
+            "      type string;\n"
+            "    }\n"
+            "    container d {\n"
+            "      config false;\n"
+            "      leaf e {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "    container f {\n"
+            "      leaf g {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "  container d {\n"
+            "    uses g;\n"
+            "  }\n"
+            "}\n";
+
+    /* from yanglint1 */
+    expect =
+            "module: a05\n"
+            "  +--rw d\n"
+            "     +---u g\n"
+            "\n"
+            "  grouping g:\n"
+            "    +--rw a?   string\n"
+            "    +--ro b?   string\n"
+            "    +---- c?   string\n"
+            "    +--ro d\n"
+            "    |  +--ro e?   string\n"
+            "    +---- f\n"
+            "       +---- g?   string\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    /* from pyang */
+    expect =
+            "module: a05\n"
+            "  +--rw d\n"
+            "     +--rw a?   string\n"
+            "     +--ro b?   string\n"
+            "     +--rw c?   string\n"
+            "     +--ro d\n"
+            "     |  +--ro e?   string\n"
+            "     +--rw f\n"
+            "        +--rw g?   string\n";
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+notif_inside_container(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a06 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  container c {\n"
+            "    notification notif;\n"
+            "  }\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a06\n"
+            "  +--rw c\n"
+            "     +---n notif\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+node_choice(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a07 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  choice my_choice;\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a07\n"
+            "  +--rw (my_choice)?\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+node_case(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a08 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "\n"
+            "  feature foo;\n"
+            "  choice my_choice {\n"
+            "    case my_case;\n"
+            "  }\n"
+            "  choice shorthand {\n"
+            "    container cont1 {\n"
+            "      if-feature \"foo\";\n"
+            "      status obsolete;\n"
+            "    }\n"
+            "    container cont2 {\n"
+            "      container cont3;\n"
+            "    }\n"
+            "  }\n"
+            "  container top {\n"
+            "    choice shorthand1 {\n"
+            "      container cont1;\n"
+            "    }\n"
+            "    choice shorthand2 {\n"
+            "      container cont2 {\n"
+            "        container cont3;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a08\n"
+            "  +--rw (my_choice)?\n"
+            "  |  +--:(my_case)\n"
+            "  +--rw (shorthand)?\n"
+            "  |  o--:(cont1)\n"
+            "  |  |  o--rw cont1 {foo}?\n"
+            "  |  +--:(cont2)\n"
+            "  |     +--rw cont2\n"
+            "  |        +--rw cont3\n"
+            "  +--rw top\n"
+            "     +--rw (shorthand1)?\n"
+            "     |  +--:(cont1)\n"
+            "     |     +--rw cont1\n"
+            "     +--rw (shorthand2)?\n"
+            "        +--:(cont2)\n"
+            "           +--rw cont2\n"
+            "              +--rw cont3\n";
+
+    const char *feats[] = {"foo", NULL};
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, feats, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+optional_opts(void **state)
+{
+    TEST_LOCAL_SETUP;
+    /* throws libyang warn: Use of anydata to define configuration data is not recommended... */
+    orig =
+            "module a09 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  leaf l1 {\n"
+            "    type string;\n"
+            "    mandatory true;\n"
+            "  }\n"
+            "  leaf l2 {\n"
+            "    type string;\n"
+            "    mandatory false;\n"
+            "  }\n"
+            "  choice c1 {\n"
+            "    mandatory true;\n"
+            "  }\n"
+            "  choice c2 {\n"
+            "    mandatory false;\n"
+            "  }\n"
+            "  anydata a1 {\n"
+            "    mandatory true;\n"
+            "  }\n"
+            "  anydata a2 {\n"
+            "    mandatory false;\n"
+            "  }\n"
+            "  anyxml x1 {\n"
+            "    mandatory true;\n"
+            "  }\n"
+            "  anyxml x2 {\n"
+            "    mandatory false;\n"
+            "  }\n"
+            "}\n";
+
+    /* from yanglint 1 */
+    expect =
+            "module: a09\n"
+            "  +--rw l1      string\n"
+            "  +--rw l2?     string\n"
+            "  +--rw (c1)\n"
+            "  +--rw (c2)?\n"
+            "  +--rw a1      anydata\n"
+            "  +--rw a2?     anydata\n"
+            "  +--rw x1      anyxml\n"
+            "  +--rw x2?     anyxml\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+presence_container(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a10 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  container c;\n"
+            "  container d {\n"
+            "    presence \"str1\";\n"
+            "  }\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a10\n"
+            "  +--rw c\n"
+            "  +--rw d!\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+node_keys(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a11 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  list l1 {\n"
+            "    key \"a\";\n"
+            "    leaf a {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n"
+            "  list l2 {\n"
+            "    key \"a b\";\n"
+            "    leaf a {\n"
+            "      type string;\n"
+            "    }\n"
+            "    leaf b {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n"
+            "  leaf-list ll {\n"
+            "    type string;\n"
+            "  }\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a11\n"
+            "  +--rw l1* [a]\n"
+            "  |  +--rw a    string\n"
+            "  +--rw l2* [a b]\n"
+            "  |  +--rw a    string\n"
+            "  |  +--rw b    string\n"
+            "  +--rw ll*   string\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+node_type_target(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a12 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  leaf a {\n"
+            "    type leafref {\n"
+            "      path \"/x:b\";\n"
+            "    }\n"
+            "  }\n"
+            "  leaf b {\n"
+            "    type string;\n"
+            "  }\n"
+            "}\n";
+
+    /* from yanglint 1 */
+    expect =
+            "module: a12\n"
+            "  +--rw a?   -> /x:b\n"
+            "  +--rw b?   string\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+node_type_leafref(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a13 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  leaf pretty-long-identifier-name-which-should-exceed-the-limit-of-72-characters {\n"
+            "    type string;\n"
+            "  }\n"
+            "  leaf a {\n"
+            "    type leafref {\n"
+            "      path \"/x:pretty-long-identifier-name-which-should-exceed-the-limit-of-72-characters\";\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* yanglint --tree-no-leafref-target --tree-line-length=72 */
+    expect =
+            "module: a13\n"
+            "  +--rw pretty-long-identifier-name-which-should-exceed-the-limit-of-72-characters?\n"
+            "  |       string\n"
+            "  +--rw a?\n"
+            "          leafref\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+node_iffeatures(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a14 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "\n"
+            "  feature foo;\n"
+            "\n"
+            "  feature bar;\n"
+            "  container c {\n"
+            "    if-feature \"foo or bar\";\n"
+            "  }\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a14\n"
+            "  +--rw c {foo or bar}?\n";
+
+    const char *feats[] = {"foo", NULL};
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, feats, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+indent_wrapper(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a15 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  container a {\n"
+            "    container b;\n"
+            "  }\n"
+            "  container c {\n"
+            "    container d {\n"
+            "      container e;\n"
+            "    }\n"
+            "    container f {\n"
+            "      container g;\n"
+            "    }\n"
+            "  }\n"
+            "  container h;\n"
+            "  container i {\n"
+            "    container j;\n"
+            "    container k;\n"
+            "  }\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a15\n"
+            "  +--rw a\n"
+            "  |  +--rw b\n"
+            "  +--rw c\n"
+            "  |  +--rw d\n"
+            "  |  |  +--rw e\n"
+            "  |  +--rw f\n"
+            "  |     +--rw g\n"
+            "  +--rw h\n"
+            "  +--rw i\n"
+            "     +--rw j\n"
+            "     +--rw k\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+line_length_twiddling(void **state)
+{
+    TEST_LOCAL_SETUP;
+    /* node_fits_tight */
+
+    orig =
+            "module a16 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "\n"
+            "  feature f;\n"
+            "\n"
+            "  typedef some-long-type {\n"
+            "    type string;\n"
+            "  }\n"
+            "  list my-list-name {\n"
+            "    key \"key\";\n"
+            "    leaf key {\n"
+            "      type string;\n"
+            "    }\n"
+            "    leaf nod-leaf {\n"
+            "      if-feature \"f\";\n"
+            "      type some-long-type;\n"
+            "    }\n"
+            "    leaf nos-leaf {\n"
+            "      if-feature \"f\";\n"
+            "      type int32;\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* pyang --tree-line-length 42 */
+    expect =
+            "module: a16\n"
+            "  +--rw my-list-name* [key]\n"
+            "     +--rw key         string\n"
+            "     +--rw nod-leaf?   some-long-type {f}?\n"
+            "     +--rw nos-leaf?   int32 {f}?\n";
+
+    const char *feats[] = {"f", NULL};
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, feats, &mod);
+    TEST_LOCAL_PRINT(mod, 42);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 42);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    ly_out_reset(UTEST_OUT);
+    /* break_before_iffeature */
+
+    /* pyang --tree-line-length 41 */
+    expect =
+            "module: a16\n"
+            "  +--rw my-list-name* [key]\n"
+            "     +--rw key         string\n"
+            "     +--rw nod-leaf?   some-long-type\n"
+            "     |       {f}?\n"
+            "     +--rw nos-leaf?   int32 {f}?\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, feats, &mod);
+    TEST_LOCAL_PRINT(mod, 41);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 41);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    ly_out_reset(UTEST_OUT);
+    /* break_before_type */
+
+    /* pyang --tree-line-length 29 */
+    expect =
+            "module: a16\n"
+            "  +--rw my-list-name* [key]\n"
+            "     +--rw key         string\n"
+            "     +--rw nod-leaf?\n"
+            "     |       some-long-type\n"
+            "     |       {f}?\n"
+            "     +--rw nos-leaf?   int32\n"
+            "             {f}?\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, feats, &mod);
+    TEST_LOCAL_PRINT(mod, 29);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 29);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    ly_out_reset(UTEST_OUT);
+    /* break_before_keys */
+
+    /* pyang --tree-line-length 23 */
+    expect =
+            "module: a16\n"
+            "  +--rw my-list-name*\n"
+            "          [key]\n"
+            "     +--rw key\n"
+            "     |       string\n"
+            "     +--rw nod-leaf?\n"
+            "     |       some-long-type\n"
+            "     |       {f}?\n"
+            "     +--rw nos-leaf?\n"
+            "             int32 {f}?\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, feats, &mod);
+    TEST_LOCAL_PRINT(mod, 23);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 23);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    ly_out_reset(UTEST_OUT);
+    /* every_node_name_is_too_long */
+
+    /* pyang --tree-line-length 14 */
+    expect =
+            "module: a16\n"
+            "  +--rw my-list-name*\n"
+            "          [key]\n"
+            "     +--rw key\n"
+            "     |       string\n"
+            "     +--rw nod-leaf?\n"
+            "     |       some-long-type\n"
+            "     |       {f}?\n"
+            "     +--rw nos-leaf?\n"
+            "             int32\n"
+            "             {f}?\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, feats, &mod);
+    TEST_LOCAL_PRINT(mod, 14);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 14);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+break_before_leafref(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a17 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  leaf e {\n"
+            "    type string;\n"
+            "  }\n"
+            "  leaf abcd {\n"
+            "    type leafref {\n"
+            "      path \"/x:e\";\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* yanglint --tree-line-length 14 */
+    expect =
+            "module: a17\n"
+            "  +--rw e?\n"
+            "  |       string\n"
+            "  +--rw abcd?\n"
+            "          -> /x:e\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 14);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 14);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+break_before_leafref_and_iffeature(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a18 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "\n"
+            "  feature f;\n"
+            "  leaf some-long-id {\n"
+            "    type string;\n"
+            "  }\n"
+            "  leaf a {\n"
+            "    if-feature \"f\";\n"
+            "    type leafref {\n"
+            "      path \"/x:some-long-id\";\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /*  yanglint --tree-no-leafref-target --tree-line-length=20 */
+    expect =
+            "module: a18\n"
+            "  +--rw some-long-id?\n"
+            "  |       string\n"
+            "  +--rw a?\n"
+            "          leafref\n"
+            "          {f}?\n";
+
+    const char *feats[] = {"f", NULL};
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, feats, &mod);
+    TEST_LOCAL_PRINT(mod, 20);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 20);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+basic_unified_indent_before_type(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a19 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "\n"
+            "  typedef longType {\n"
+            "    type string;\n"
+            "  }\n"
+            "  container A {\n"
+            "    leaf Bnode {\n"
+            "      type int8;\n"
+            "    }\n"
+            "    leaf Cnode {\n"
+            "      type int8;\n"
+            "      mandatory true;\n"
+            "    }\n"
+            "    leaf Dnode {\n"
+            "      type int8;\n"
+            "      mandatory true;\n"
+            "    }\n"
+            "    leaf E {\n"
+            "      type longType;\n"
+            "      mandatory true;\n"
+            "    }\n"
+            "    leaf G {\n"
+            "      type int8;\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a19\n"
+            "  +--rw A\n"
+            "     +--rw Bnode?   int8\n"
+            "     +--rw Cnode    int8\n"
+            "     +--rw Dnode    int8\n"
+            "     +--rw E        longType\n"
+            "     +--rw G?       int8\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+twiddling_unified_indent_before_type(void **state)
+{
+    TEST_LOCAL_SETUP;
+    /* basic_functionality */
+
+    orig =
+            "module a20 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "\n"
+            "  typedef longType {\n"
+            "    type string;\n"
+            "  }\n"
+            "  container A {\n"
+            "    leaf Bnode {\n"
+            "      type int8;\n"
+            "    }\n"
+            "    leaf CnodeIsBigger {\n"
+            "      type int8;\n"
+            "      mandatory true;\n"
+            "    }\n"
+            "    leaf Dnode {\n"
+            "      type int8;\n"
+            "      mandatory true;\n"
+            "    }\n"
+            "    leaf E {\n"
+            "      type longType;\n"
+            "      mandatory true;\n"
+            "    }\n"
+            "    leaf G {\n"
+            "      type int8;\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* pyang --tree-line-length 36 */
+    expect =
+            "module: a20\n"
+            "  +--rw A\n"
+            "     +--rw Bnode?           int8\n"
+            "     +--rw CnodeIsBigger    int8\n"
+            "     +--rw Dnode            int8\n"
+            "     +--rw E                longType\n"
+            "     +--rw G?               int8\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 36);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 36);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    ly_out_reset(UTEST_OUT);
+    /* unified_indent_before_type_long_node_name */
+
+    /* pyang --tree-line-length 32 */
+    expect =
+            "module: a20\n"
+            "  +--rw A\n"
+            "     +--rw Bnode?           int8\n"
+            "     +--rw CnodeIsBigger    int8\n"
+            "     +--rw Dnode            int8\n"
+            "     +--rw E\n"
+            "     |       longType\n"
+            "     +--rw G?               int8\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 32);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 32);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    ly_out_reset(UTEST_OUT);
+    /* unified_indent_before_type_long_node_type */
+
+    /* pyang --tree-line-length 31 */
+    expect =
+            "module: a20\n"
+            "  +--rw A\n"
+            "     +--rw Bnode?\n"
+            "     |       int8\n"
+            "     +--rw CnodeIsBigger\n"
+            "     |       int8\n"
+            "     +--rw Dnode\n"
+            "     |       int8\n"
+            "     +--rw E\n"
+            "     |       longType\n"
+            "     +--rw G?\n"
+            "             int8\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 31);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 31);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+inheritance_of_config_flag(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a21 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  container a {\n"
+            "    config false;\n"
+            "    leaf b {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a21\n"
+            "  +--ro a\n"
+            "     +--ro b?   string\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+inheritance_of_status_flag(void **state)
+{
+    TEST_LOCAL_SETUP;
+    /* throws libyang warn: Missing explicit "..." status that was already specified in parent, inheriting. */
+    orig =
+            "module a22 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  container a {\n"
+            "    status current;\n"
+            "    container b {\n"
+            "      status deprecated;\n"
+            "      leaf f {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "    container c {\n"
+            "      status obsolete;\n"
+            "      leaf g {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "  container d {\n"
+            "    status deprecated;\n"
+            "    container h {\n"
+            "      status obsolete;\n"
+            "      leaf e {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* from yanglint 1 */
+    expect =
+            "module: a22\n"
+            "  +--rw a\n"
+            "  |  x--rw b\n"
+            "  |  |  x--rw f?   string\n"
+            "  |  o--rw c\n"
+            "  |     o--rw g?   string\n"
+            "  x--rw d\n"
+            "     o--rw h\n"
+            "        o--rw e?   string\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+key_leaf_is_always_mandatory_true(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a23 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  list a {\n"
+            "    key \"k1\";\n"
+            "    list b {\n"
+            "      key \"k2\";\n"
+            "      leaf k1 {\n"
+            "        type string;\n"
+            "      }\n"
+            "      leaf k2 {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "    leaf k1 {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a23\n"
+            "  +--rw a* [k1]\n"
+            "     +--rw b* [k2]\n"
+            "     |  +--rw k1?   string\n"
+            "     |  +--rw k2    string\n"
+            "     +--rw k1    string\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+
+    /* from pyang but with some swapped lines */
+    expect =
+            "module: a23\n"
+            "  +--rw a* [k1]\n"
+            "     +--rw k1    string\n"
+            "     +--rw b* [k2]\n"
+            "        +--rw k2    string\n"
+            "        +--rw k1?   string\n";
+
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+transition_between_rpc_and_notif(void **state)
+{
+    TEST_LOCAL_SETUP;
+    orig =
+            "module a24 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  container top {\n"
+            "    leaf g {\n"
+            "      type string;\n"
+            "    }\n"
+            "    action rpc1 {\n"
+            "\n"
+            "      input {\n"
+            "        leaf in {\n"
+            "          type string;\n"
+            "        }\n"
+            "      }\n"
+            "    }\n"
+            "    action rpc2 {\n"
+            "\n"
+            "      input {\n"
+            "        leaf in {\n"
+            "          type string;\n"
+            "        }\n"
+            "      }\n"
+            "\n"
+            "      output {\n"
+            "        leaf out {\n"
+            "          type string;\n"
+            "        }\n"
+            "      }\n"
+            "    }\n"
+            "    notification n1;\n"
+            "    notification n2;\n"
+            "  }\n"
+            "}\n";
+
+    /* from pyang */
+    expect =
+            "module: a24\n"
+            "  +--rw top\n"
+            "     +--rw g?      string\n"
+            "     +---x rpc1\n"
+            "     |  +---w input\n"
+            "     |     +---w in?   string\n"
+            "     +---x rpc2\n"
+            "     |  +---w input\n"
+            "     |  |  +---w in?   string\n"
+            "     |  +--ro output\n"
+            "     |     +--ro out?   string\n"
+            "     +---n n1\n"
+            "     +---n n2\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+local_augment(void **state)
+{
+    TEST_LOCAL_SETUP;
+
+    orig =
+            "module a25 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  container g;\n"
+            "  augment \"/x:g\" {\n"
+            "    container e;\n"
+            "  }\n"
+            "}\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+
+    /* from pyang */
+    expect =
+            "module: a25\n"
+            "  +--rw g\n"
+            "     +--rw e\n";
+
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+print_compiled_node(void **state)
+{
+    TEST_LOCAL_SETUP;
+    const struct lysc_node *node;
+
+    orig =
+            "module a26 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "  container g {\n"
+            "    leaf a {\n"
+            "      type string;\n"
+            "    }\n"
+            "    container h {\n"
+            "      leaf b {\n"
+            "        type string;\n"
+            "        mandatory true;\n"
+            "      }\n"
+            "      leaf c {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+
+    /* pyang -f tree --tree-path /g/h/c */
+    expect =
+            "module: a26\n"
+            "  +--rw g\n"
+            "     +--rw h\n"
+            "        +--rw c?   string\n";
+
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    node = lys_find_path(UTEST_LYCTX, NULL, "/a26:g/h/c", 0);
+    CHECK_POINTER(node, 1);
+    assert_int_equal(LY_SUCCESS, lys_print_node(UTEST_OUT, node, LYS_OUT_TREE, 72, 0));
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+
+    /* pyang -f tree --tree-path /g/h */
+    expect =
+            "module: a26\n"
+            "  +--rw g\n"
+            "     +--rw h\n"
+            "        +--rw b    string\n"
+            "        +--rw c?   string\n";
+
+    node = lys_find_path(UTEST_LYCTX, NULL, "/a26:g/h", 0);
+    CHECK_POINTER(node, 1);
+    assert_int_equal(LY_SUCCESS, lys_print_node(UTEST_OUT, node, LYS_OUT_TREE, 72, 0));
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+
+    /* pyang whose output is adjusted manually */
+    expect =
+            "module: a26\n"
+            "  +--rw g\n"
+            "     +--rw h\n";
+
+    node = lys_find_path(UTEST_LYCTX, NULL, "/a26:g/h", 0);
+    CHECK_POINTER(node, 1);
+    assert_int_equal(LY_SUCCESS, lys_print_node(UTEST_OUT, node, LYS_OUT_TREE, 72, LYS_PRINT_NO_SUBSTMT));
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static LY_ERR
+local_imp_clb(const char *UNUSED(mod_name), const char *UNUSED(mod_rev), const char *UNUSED(submod_name),
+        const char *UNUSED(sub_rev), void *user_data, LYS_INFORMAT *format,
+        const char **module_data, void (**free_module_data)(void *model_data, void *user_data))
+{
+    *module_data = user_data;
+    *format = LYS_IN_YANG;
+    *free_module_data = NULL;
+    return LY_SUCCESS;
+}
+
+static void
+print_parsed_submodule(void **state)
+{
+    TEST_LOCAL_SETUP;
+
+    orig = "module a27 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "\n"
+            "  include \"a27-sub\";\n"
+            "}\n";
+
+    char *submodule =
+            "submodule a27-sub {\n"
+            "  yang-version 1.1;\n"
+            "  belongs-to a27 {\n"
+            "    prefix x;\n"
+            "  }\n"
+            "\n"
+            "  container h {\n"
+            "    leaf b {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* edited pyang output */
+    expect =
+            "submodule: a27-sub\n"
+            "  +--rw h\n"
+            "     +--rw b?   string\n";
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, local_imp_clb, submodule);
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    assert_int_equal(LY_SUCCESS, lys_print_submodule(UTEST_OUT, mod->parsed->includes[0].submodule, LYS_OUT_TREE, 72, 0));
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+yang_data(void **state)
+{
+    TEST_LOCAL_SETUP;
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+    assert_non_null(ly_ctx_load_module(UTEST_LYCTX, "ietf-restconf", "2017-01-26", NULL));
+
+    orig =
+            "module a28 {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"x:y\";\n"
+            "  prefix x;\n"
+            "\n"
+            "  import ietf-restconf {\n"
+            "    prefix rc;\n"
+            "    revision-date 2017-01-26;\n"
+            "  }\n"
+            "\n"
+            "  rc:yang-data \"tmp1\" {\n"
+            "    container cont1 {\n"
+            "      leaf lf {\n"
+            "        type string;\n"
+            "      }\n"
+            "      list l2 {\n"
+            "        key\n"
+            "          \"a b\";\n"
+            "        leaf a {\n"
+            "          type string;\n"
+            "        }\n"
+            "        leaf b {\n"
+            "          type string;\n"
+            "        }\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "  rc:yang-data \"tmp2\" {\n"
+            "    container con2 {\n"
+            "      leaf lf {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "  rc:yang-data \"tmp3\" {\n"
+            "    uses g1;\n"
+            "    uses g2;\n"
+            "  }\n"
+            "  rc:yang-data \"tmp4\" {\n"
+            "    choice x {\n"
+            "      case a {\n"
+            "        container z;\n"
+            "      }\n"
+            "      case b {\n"
+            "        container y;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "\n"
+            "  grouping g1 {\n"
+            "    description\n"
+            "      \"Some Text\";\n"
+            "  }\n"
+            "\n"
+            "  grouping g2 {\n"
+            "    container cont3;\n"
+            "  }\n"
+            "  container mont;\n"
+            "}\n";
+
+    /* from pyang (--tree-print-yang-data --tree-print-groupings -p "...")
+     * but with these adjustments:
+     *  - <flags> is always '--' for yang-data nodes
+     *  - yang-data tmp3 has two 'uses' nodes
+     *  - grouping g2 has ':' character at the end
+     */
+    expect =
+            "module: a28\n"
+            "  +--rw mont\n"
+            "\n"
+            "  grouping g1\n"
+            "  grouping g2:\n"
+            "    +---- cont3\n"
+            "\n"
+            "  yang-data tmp1:\n"
+            "    +---- cont1\n"
+            "       +---- lf?   string\n"
+            "       +---- l2* [a b]\n"
+            "          +---- a    string\n"
+            "          +---- b    string\n"
+            "  yang-data tmp2:\n"
+            "    +---- con2\n"
+            "       +---- lf?   string\n"
+            "  yang-data tmp3:\n"
+            "    +---u g1\n"
+            "    +---u g2\n"
+            "  yang-data tmp4:\n"
+            "    +---- (x)?\n"
+            "       +--:(a)\n"
+            "       |  +---- z\n"
+            "       +--:(b)\n"
+            "          +---- y\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+
+    ly_out_reset(UTEST_OUT);
+
+    /* from pyang (--tree-print-yang-data -p "...")
+     * but with these adjustments:
+     *  <flags> is always '--' for yang-data nodes
+     */
+    expect =
+            "module: a28\n"
+            "  +--rw mont\n"
+            "\n"
+            "  yang-data tmp1:\n"
+            "    +---- cont1\n"
+            "       +---- lf?   string\n"
+            "       +---- l2* [a b]\n"
+            "          +---- a    string\n"
+            "          +---- b    string\n"
+            "  yang-data tmp2:\n"
+            "    +---- con2\n"
+            "       +---- lf?   string\n"
+            "  yang-data tmp3:\n"
+            "    +---- cont3\n"
+            "  yang-data tmp4:\n"
+            "    +---- (x)?\n"
+            "       +--:(a)\n"
+            "       |  +---- z\n"
+            "       +--:(b)\n"
+            "          +---- y\n";
+
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+static LY_ERR
+getter(const struct lysc_ext_instance *ext, void *user_data, void **ext_data, ly_bool *ext_data_free)
+{
+    struct ly_ctx *ctx;
+    struct lyd_node *data = NULL;
+
+    ctx = ext->module->ctx;
+    if (user_data) {
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(ctx, user_data, LYD_XML, 0, LYD_VALIDATE_PRESENT, &data));
+    }
+
+    *ext_data = data;
+    *ext_data_free = 1;
+    return LY_SUCCESS;
+}
+
+#define SM_MODNAME_EXT "sm-extension"
+#define SM_MOD_EXT_NAMESPACE "urn:sm-ext"
+#define SM_PREF "sm"
+#define SCHEMA_REF_INLINE "<inline></inline>"
+#define SCHEMA_REF_SHARED(REF) "<shared-schema>"REF"</shared-schema>"
+
+#define EXT_DATA(MPMOD_NAME, MODULES, SCHEMA_REF) \
+    "<yang-library xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\"\n" \
+    "   xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores\">\n" \
+    "<module-set>\n" \
+    "   <name>test-set</name>\n" \
+    "   <module>\n" \
+    "      <name>"SM_MODNAME_EXT"</name>\n" \
+    "      <namespace>"SM_MOD_EXT_NAMESPACE"</namespace>\n" \
+    "   </module>\n" \
+    MODULES \
+    "</module-set>\n" \
+    "<content-id>1</content-id>\n" \
+    "</yang-library>\n" \
+    "<modules-state xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\">\n" \
+    "<module-set-id>1</module-set-id>\n" \
+    "</modules-state>\n" \
+    "<schema-mounts xmlns=\"urn:ietf:params:xml:ns:yang:ietf-yang-schema-mount\">\n" \
+    "<namespace>\n" \
+    "   <prefix>"SM_PREF"</prefix>\n" \
+    "   <uri>x:"MPMOD_NAME"</uri>\n" \
+    "</namespace>\n" \
+    "<mount-point>\n" \
+    "   <module>"MPMOD_NAME"</module>\n" \
+    "   <label>mnt-root</label>\n" \
+    SCHEMA_REF \
+    "</mount-point>\n" \
+    "</schema-mounts>"
+
+#define SM_MOD_MAIN(NAME, BODY) \
+    "module "NAME" {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"x:"NAME"\";\n" \
+    "  prefix \"x\";\n" \
+    "  import ietf-yang-schema-mount {\n" \
+    "    prefix yangmnt;\n" \
+    "  }\n" \
+    BODY \
+    "}"
+
+static void
+mount_point(void **state)
+{
+    char *data;
+
+    TEST_LOCAL_SETUP;
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    /* interested in sm-extension.yang and sm-mod.yang */
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+
+    /*
+     * 'mp' flag for list and container
+     */
+    orig = SM_MOD_MAIN("a29",
+            "list lt {\n"
+            "  key \"name\";\n"
+            "  leaf name {\n"
+            "    type string;\n"
+            "  }\n"
+            "  yangmnt:mount-point \"mnt-root\";\n"
+            "}\n"
+            "container cont {\n"
+            "  yangmnt:mount-point \"mnt-root\";\n"
+            "}\n");
+    expect =
+            "module: a29\n"
+            "  +--mp lt* [name]\n"
+            "  |  +--rw name    string\n"
+            "  +--mp cont\n";
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_out_reset(UTEST_OUT);
+
+    /*
+     * mount schema by 'inline' schema-ref
+     */
+    orig = SM_MOD_MAIN("a30",
+            "list lt {\n"
+            "  key \"name\";\n"
+            "  leaf name {\n"
+            "    type string;\n"
+            "  }\n"
+            "  yangmnt:mount-point \"mnt-root\";\n"
+            "}\n");
+    expect =
+            "module: a30\n"
+            "  +--mp lt* [name]\n"
+            "     +--rw tlist/* [name]\n"
+            "     |  +--rw name    uint32\n"
+            "     +--rw tcont/\n"
+            "     |  +--rw tleaf?   uint32\n"
+            "     +--rw name    string\n";
+    data = EXT_DATA("a30", "", SCHEMA_REF_INLINE);
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, getter, data);
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_out_reset(UTEST_OUT);
+
+    /*
+     * mount schema into empty container
+     */
+    orig = SM_MOD_MAIN("a31",
+            "container cont {\n"
+            "  yangmnt:mount-point \"mnt-root\";\n"
+            "}\n"
+            "leaf lf {\n"
+            "  type string;\n"
+            "}\n");
+    expect =
+            "module: a31\n"
+            "  +--mp cont\n"
+            "  |  +--rw tlist/* [name]\n"
+            "  |  |  +--rw name    uint32\n"
+            "  |  +--rw tcont/\n"
+            "  |     +--rw tleaf?   uint32\n"
+            "  +--rw lf?     string\n";
+    data = EXT_DATA("a31", "", SCHEMA_REF_INLINE);
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, getter, data);
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_out_reset(UTEST_OUT);
+
+    /*
+     * mount schema into non-empty container
+     */
+    orig = SM_MOD_MAIN("a32",
+            "container cont {\n"
+            "  leaf lf1 {\n"
+            "    type string;\n"
+            "  }\n"
+            "  yangmnt:mount-point \"mnt-root\";\n"
+            "  leaf lf2 {\n"
+            "    type string;\n"
+            "  }\n"
+            "}\n");
+    expect =
+            "module: a32\n"
+            "  +--mp cont\n"
+            "     +--rw tlist/* [name]\n"
+            "     |  +--rw name    uint32\n"
+            "     +--rw tcont/\n"
+            "     |  +--rw tleaf?   uint32\n"
+            "     +--rw lf1?   string\n"
+            "     +--rw lf2?   string\n";
+    data = EXT_DATA("a32", "", SCHEMA_REF_INLINE);
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, getter, data);
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_out_reset(UTEST_OUT);
+
+    /*
+     * mounting with parent-reference
+     */
+    orig = SM_MOD_MAIN("a33",
+            "list pr {\n"
+            "  key \"name\";\n"
+            "  leaf name {\n"
+            "    type string;\n"
+            "  }\n"
+            "  leaf prlf {\n"
+            "    type string;\n"
+            "  }\n"
+            "}\n"
+            "leaf lf {\n"
+            "  type string;\n"
+            "}\n"
+            "container cont {\n"
+            "  yangmnt:mount-point \"mnt-root\";\n"
+            "  list lt {\n"
+            "    key \"name\";\n"
+            "    leaf name {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n"
+            "}\n");
+    expect =
+            "module: a33\n"
+            "  +--rw pr* [name]\n"
+            "  |  +--rw name    string\n"
+            "  |  +--rw prlf?   string\n"
+            "  +--rw lf?     string\n"
+            "  +--mp cont\n"
+            "     +--rw tlist/* [name]\n"
+            "     |  +--rw name    uint32\n"
+            "     +--rw tcont/\n"
+            "     |  +--rw tleaf?   uint32\n"
+            "     +--rw pr@* [name]\n"
+            "     |  +--rw prlf?   string\n"
+            "     +--rw lf@?     string\n"
+            "     +--rw lt* [name]\n"
+            "        +--rw name    string\n";
+    data = EXT_DATA("a33", "", SCHEMA_REF_SHARED(
+            "<parent-reference>/"SM_PREF ":pr/"SM_PREF ":prlf</parent-reference>\n"
+            "<parent-reference>/"SM_PREF ":lf</parent-reference>\n"));
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, getter, data);
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_out_reset(UTEST_OUT);
+
+    /*
+     * mounting with parent-reference into empty container
+     */
+    orig = SM_MOD_MAIN("a34",
+            "container cont {\n"
+            "  yangmnt:mount-point \"mnt-root\";\n"
+            "}\n"
+            "leaf lf {\n"
+            "  type string;\n"
+            "}\n");
+    expect =
+            "module: a34\n"
+            "  +--mp cont\n"
+            "  |  +--rw tlist/* [name]\n"
+            "  |  |  +--rw name    uint32\n"
+            "  |  +--rw tcont/\n"
+            "  |  |  +--rw tleaf?   uint32\n"
+            "  |  +--rw lf@?     string\n"
+            "  +--rw lf?     string\n";
+    data = EXT_DATA("a34", "",
+            SCHEMA_REF_SHARED(
+            "<parent-reference>/"SM_PREF ":lf</parent-reference>\n"));
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, getter, data);
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_out_reset(UTEST_OUT);
+
+    /*
+     * mounting module which is only parsed
+     */
+    orig = SM_MOD_MAIN("a35",
+            "import sm-mod {\n"
+            "  prefix smm;\n"
+            "}\n"
+            "container pr {\n"
+            "  leaf prlf {\n"
+            "    type uint32;\n"
+            "  }\n"
+            "}\n"
+            "list lt {\n"
+            "  key \"name\";\n"
+            "  yangmnt:mount-point \"mnt-root\";\n"
+            "  leaf name {\n"
+            "    type string;\n"
+            "  }\n"
+            "}\n");
+    expect =
+            "module: a35\n"
+            "  +--rw pr\n"
+            "  |  +--rw prlf?   uint32\n"
+            "  +--mp lt* [name]\n"
+            "     +--rw tlist/* [name]\n"
+            "     |  +--rw name    uint32\n"
+            "     +--rw tcont/\n"
+            "     |  +--rw tleaf?   uint32\n"
+            "     +--mp ncmp/\n"
+            "     +--rw not-compiled/\n"
+            "     |  +--rw first?    string\n"
+            "     |  +--rw second?   string\n"
+            "     +--rw pr@\n"
+            "     |  +--rw prlf?   uint32\n"
+            "     +--rw name    string\n";
+    data = EXT_DATA("a35",
+            "<module>\n"
+            "   <name>sm-mod</name>\n"
+            "   <namespace>urn:sm-mod</namespace>\n"
+            "</module>\n",
+            SCHEMA_REF_SHARED(
+            "<parent-reference>/"SM_PREF ":pr/"SM_PREF ":prlf</parent-reference>\n"));
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, getter, data);
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_out_reset(UTEST_OUT);
+
+    /*
+     * notifications and rpcs in mounted module
+     */
+    orig = SM_MOD_MAIN("a36",
+            "container cont {\n"
+            "  yangmnt:mount-point \"mnt-root\";\n"
+            "}\n");
+    expect =
+            "module: a36\n"
+            "  +--mp cont\n"
+            "     +--rw tlist/* [name]\n"
+            "     |  +--rw name    uint32\n"
+            "     +--rw tcont/\n"
+            "     |  +--rw tleaf?   uint32\n"
+            "     +--rw cont/\n"
+            "     |  +---x cr\n"
+            "     |  |  +---w input\n"
+            "     |  |  |  +---w in?   string\n"
+            "     |  |  +--ro output\n"
+            "     |  |     +--ro out?   string\n"
+            "     |  +---n cn\n"
+            "     +---x r1/\n"
+            "     +---x r2/\n"
+            "     +---n n1/\n"
+            "     +---n n2/\n";
+    data = EXT_DATA("a36",
+            "<module>\n"
+            "   <name>sm-rpcnotif</name>\n"
+            "   <namespace>urn:rpcnotif</namespace>\n"
+            "</module>\n",
+            SCHEMA_REF_INLINE);
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, getter, data);
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_out_reset(UTEST_OUT);
+
+    /*
+     * parent-ref composes the '@' subtree
+     */
+    orig = SM_MOD_MAIN("a37",
+            "container pr {\n"
+            "  leaf ignored_node {\n"
+            "    type string;\n"
+            "  }\n"
+            "  container cont {\n"
+            "    leaf ignored_lf {\n"
+            "      type uint32;\n"
+            "    }\n"
+            "  }\n"
+            "  container ignored_subtree {\n"
+            "    leaf ignored_lf {\n"
+            "      type uint32;\n"
+            "    }\n"
+            "  }\n"
+            "  container cont_sibl {\n"
+            "    leaf slf {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n"
+            "  leaf lf {\n"
+            "    type uint32;\n"
+            "  }\n"
+            "}\n"
+            "container cont_mount {\n"
+            "  yangmnt:mount-point \"mnt-root\";\n"
+            "}\n");
+    expect =
+            "module: a37\n"
+            "  +--rw pr\n"
+            "  |  +--rw ignored_node?      string\n"
+            "  |  +--rw cont\n"
+            "  |  |  +--rw ignored_lf?   uint32\n"
+            "  |  +--rw ignored_subtree\n"
+            "  |  |  +--rw ignored_lf?   uint32\n"
+            "  |  +--rw cont_sibl\n"
+            "  |  |  +--rw slf?   string\n"
+            "  |  +--rw lf?                uint32\n"
+            "  +--mp cont_mount\n"
+            "     +--rw tlist/* [name]\n"
+            "     |  +--rw name    uint32\n"
+            "     +--rw tcont/\n"
+            "     |  +--rw tleaf?   uint32\n"
+            "     +--rw pr@\n"
+            "        +--rw cont\n"
+            "        +--rw cont_sibl\n"
+            "        |  +--rw slf?   string\n"
+            "        +--rw lf?          uint32\n";
+    data = EXT_DATA("a37", "", SCHEMA_REF_SHARED(
+            "<parent-reference>/"SM_PREF ":pr/"SM_PREF ":cont_sibl/slf</parent-reference>\n"
+            "<parent-reference>/"SM_PREF ":pr/"SM_PREF ":cont</parent-reference>\n"
+            "<parent-reference>/"SM_PREF ":pr/"SM_PREF ":lf</parent-reference>\n"));
+    ly_ctx_set_ext_data_clb(UTEST_LYCTX, getter, data);
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_out_reset(UTEST_OUT);
+
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_TEARDOWN;
+}
+
+static void
+structure(void **state)
+{
+    TEST_LOCAL_SETUP;
+
+    orig =
+            "module example-module {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"urn:example:example-module\";\n"
+            "  prefix exm;\n"
+            "\n"
+            "  import ietf-yang-structure-ext {\n"
+            "    prefix sx;\n"
+            "  }\n"
+            "\n"
+            "  sx:structure address-book {\n"
+            "    list address {\n"
+            "      key \"last first\";\n"
+            "      leaf last {\n"
+            "        type string;\n"
+            "      }\n"
+            "      leaf first {\n"
+            "        type string;\n"
+            "      }\n"
+            "      leaf street {\n"
+            "        type string;\n"
+            "      }\n"
+            "      leaf city {\n"
+            "        type string;\n"
+            "      }\n"
+            "      leaf state {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* from RFC 8791, Appendix A.1 */
+    expect =
+            "module: example-module\n"
+            "\n"
+            "  structure address-book:\n"
+            "    +-- address* [last first]\n"
+            "       +-- last      string\n"
+            "       +-- first     string\n"
+            "       +-- street?   string\n"
+            "       +-- city?     string\n"
+            "       +-- state?    string\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_out_reset(UTEST_OUT);
+
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_out_reset(UTEST_OUT);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    orig =
+            "module example-module-aug {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"urn:example:example-module-aug\";\n"
+            "  prefix exma;\n"
+            "\n"
+            "  import ietf-yang-structure-ext {\n"
+            "    prefix sx;\n"
+            "  }\n"
+            "  import example-module {\n"
+            "    prefix exm;\n"
+            "  }\n"
+            "\n"
+            "  sx:augment-structure \"/exm:address-book/exm:address\" {\n"
+            "    leaf county {\n"
+            "      type string;\n"
+            "    }\n"
+            "    leaf zipcode {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    /* from RFC 8791, Appendix A.2 */
+    expect =
+            "module: example-module-aug\n"
+            "\n"
+            "  augment-structure /exm:address-book/exm:address:\n"
+            "    +-- county?    string\n"
+            "    +-- zipcode?   string\n";
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_out_reset(UTEST_OUT);
+
+    /* using lysc tree */
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+    TEST_LOCAL_PRINT(mod, 72);
+    assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
+    assert_string_equal(printed, expect);
+    ly_out_reset(UTEST_OUT);
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_SET_PRIV_PARSED);
+
+    TEST_LOCAL_TEARDOWN;
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(base_sections),
+        UTEST(node_status),
+        UTEST(node_config_flags),
+        UTEST(node_rpcs_flags),
+        UTEST(node_grouping_flags),
+        UTEST(notif_inside_container),
+        UTEST(node_choice),
+        UTEST(node_case),
+        UTEST(optional_opts),
+        UTEST(presence_container),
+        UTEST(node_keys),
+        UTEST(node_type_target),
+        UTEST(node_type_leafref),
+        UTEST(node_iffeatures),
+        UTEST(indent_wrapper),
+        UTEST(line_length_twiddling),
+        UTEST(break_before_leafref),
+        UTEST(break_before_leafref_and_iffeature),
+        UTEST(basic_unified_indent_before_type),
+        UTEST(twiddling_unified_indent_before_type),
+        UTEST(inheritance_of_config_flag),
+        UTEST(inheritance_of_status_flag),
+        UTEST(key_leaf_is_always_mandatory_true),
+        UTEST(transition_between_rpc_and_notif),
+        UTEST(local_augment),
+        UTEST(print_compiled_node),
+        UTEST(print_parsed_submodule),
+        UTEST(yang_data),
+        UTEST(mount_point),
+        UTEST(structure),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/schema/test_schema.c b/tests/utests/schema/test_schema.c
new file mode 100644
index 0000000..175b569
--- /dev/null
+++ b/tests/utests/schema/test_schema.c
@@ -0,0 +1,1887 @@
+/**
+ * @file test_schema.c
+ * @author Radek Krejci <rkrejci@cesnet.cz>
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief unit tests for schema related functions
+ *
+ * Copyright (c) 2018 - 2022 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include <string.h>
+
+#include "compat.h"
+#include "context.h"
+#include "log.h"
+#include "parser_schema.h"
+#include "plugins_exts.h"
+#include "set.h"
+#include "tree_edit.h"
+#include "tree_schema.h"
+#include "tree_schema_internal.h"
+
+static LY_ERR
+test_imp_clb(const char *UNUSED(mod_name), const char *UNUSED(mod_rev), const char *UNUSED(submod_name),
+        const char *UNUSED(sub_rev), void *user_data, LYS_INFORMAT *format,
+        const char **module_data, void (**free_module_data)(void *model_data, void *user_data))
+{
+    *module_data = user_data;
+    if ((*module_data)[0] == '<') {
+        *format = LYS_IN_YIN;
+    } else {
+        *format = LYS_IN_YANG;
+    }
+    *free_module_data = NULL;
+    return LY_SUCCESS;
+}
+
+#define TEST_YANG_MODULE_10(MOD_NAME, MOD_PREFIX, MOD_NS, CONTENT) \
+    "module "MOD_NAME" { namespace "MOD_NS"; prefix "MOD_PREFIX"; "CONTENT"}"
+
+#define TEST_YANG_MODULE_11(MOD_NAME, MOD_PREFIX, MOD_NS, CONTENT) \
+    "module "MOD_NAME" {yang-version 1.1; namespace "MOD_NS"; prefix "MOD_PREFIX"; "CONTENT"}"
+
+#define TEST_YIN_MODULE_10(MOD_NAME, MOD_PREFIX, MOD_NS, CONTENT) \
+    "<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" name=\""MOD_NAME"\">" \
+    "<namespace uri=\""MOD_NS"\"/><prefix value=\""MOD_PREFIX"\"/>"CONTENT"</module>"
+
+#define TEST_YIN_MODULE_11(MOD_NAME, MOD_PREFIX, MOD_NS, CONTENT) \
+    "<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" name=\""MOD_NAME"\"><yang-version value=\"1.1\"/>" \
+    "<namespace uri=\""MOD_NS"\"/><prefix value=\""MOD_PREFIX"\"/>"CONTENT"</module>"
+
+#define TEST_SCHEMA_STR(RFC7950, YIN, MOD_NAME, CONTENT, STR) \
+    if (YIN) { \
+        if (RFC7950) { \
+            STR = TEST_YIN_MODULE_11(MOD_NAME, MOD_NAME, "urn:libyang:test:"MOD_NAME, CONTENT); \
+        } else { \
+            STR = TEST_YIN_MODULE_10(MOD_NAME, MOD_NAME, "urn:libyang:test:"MOD_NAME, CONTENT); \
+        } \
+    } else { /* YANG */ \
+        if (RFC7950) { \
+            STR = TEST_YANG_MODULE_11(MOD_NAME, MOD_NAME, "urn:libyang:test:"MOD_NAME, CONTENT); \
+        } else { \
+            STR = TEST_YANG_MODULE_10(MOD_NAME, MOD_NAME, "urn:libyang:test:"MOD_NAME, CONTENT); \
+        } \
+    }
+
+#define TEST_SCHEMA_OK(RFC7950, YIN, MOD_NAME, CONTENT, RESULT) \
+    { \
+    const char *test_str__; \
+    TEST_SCHEMA_STR(RFC7950, YIN, MOD_NAME, CONTENT, test_str__) \
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, test_str__, YIN ? LYS_IN_YIN : LYS_IN_YANG, &(RESULT))); \
+    }
+
+#define TEST_SCHEMA_ERR(RFC7950, YIN, MOD_NAME, CONTENT, ERRMSG, ERRPATH) \
+    { \
+    const char *test_str__; \
+    TEST_SCHEMA_STR(RFC7950, YIN, MOD_NAME, CONTENT, test_str__) \
+    assert_int_not_equal(lys_parse_mem(UTEST_LYCTX, test_str__, YIN ? LYS_IN_YIN : LYS_IN_YANG, NULL), LY_SUCCESS); \
+    CHECK_LOG_CTX(ERRMSG, ERRPATH); \
+    }
+
+#define TEST_SCHEMA_PARSE_ERR(RFC7950, YIN, MOD_NAME, CONTENT, ERRMSG, ERRPATH) \
+    { \
+    const char *test_str__; \
+    TEST_SCHEMA_STR(RFC7950, YIN, MOD_NAME, CONTENT, test_str__) \
+    assert_int_not_equal(lys_parse_mem(UTEST_LYCTX, test_str__, YIN ? LYS_IN_YIN : LYS_IN_YANG, NULL), LY_SUCCESS); \
+    CHECK_LOG_CTX("Parsing module \""MOD_NAME"\" failed.", NULL, ERRMSG, ERRPATH); \
+    }
+
+#define TEST_STMT_DUP(RFC7950, YIN, STMT, MEMBER, VALUE1, VALUE2, LINE) \
+    if (YIN) { \
+        TEST_SCHEMA_PARSE_ERR(RFC7950, YIN, "dup", "", "Duplicate keyword \""MEMBER"\".", "Line number "LINE"."); \
+    } else { \
+        TEST_SCHEMA_PARSE_ERR(RFC7950, YIN, "dup", STMT"{"MEMBER" "VALUE1";"MEMBER" "VALUE2";}", \
+                        "Duplicate keyword \""MEMBER"\".", "Line number "LINE"."); \
+    }
+
+#define TEST_STMT_SUBSTM_ERR(RFC7950, STMT, SUBSTMT, VALUE) ;\
+        TEST_SCHEMA_PARSE_ERR(RFC7950, 0, "inv", STMT" test {"SUBSTMT" "VALUE";}", \
+                        "Invalid keyword \""SUBSTMT"\" as a child of \""STMT"\".", "Line number 1.");
+
+struct module_clb_list {
+    const char *name;
+    const char *data;
+};
+
+static LY_ERR
+module_clb(const char *mod_name, const char *UNUSED(mod_rev), const char *submod_name,
+        const char *UNUSED(sub_rev), void *user_data, LYS_INFORMAT *format,
+        const char **module_data, void (**free_module_data)(void *model_data, void *user_data))
+{
+    struct module_clb_list *list = (struct module_clb_list *)user_data;
+
+    for (unsigned int i = 0; list[i].data; i++) {
+
+        if ((submod_name && !strcmp(list[i].name, submod_name)) ||
+                (!submod_name && mod_name && !strcmp(list[i].name, mod_name))) {
+            *module_data = list[i].data;
+            *format = LYS_IN_YANG;
+            *free_module_data = NULL;
+            return LY_SUCCESS;
+        }
+    }
+    return LY_EINVAL;
+}
+
+static void
+test_getnext(void **state)
+{
+    struct lys_module *mod;
+    const struct lysc_node *node = NULL, *four;
+    const struct lysc_node_container *cont;
+    const struct lysc_action *rpc;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {yang-version 1.1; namespace urn:a;prefix a;"
+            "container a { container one {presence test;} leaf two {type string;} leaf-list three {type string;}"
+            "  list four {config false;} choice x { leaf five {type string;} case y {leaf six {type string;}}}"
+            "  anyxml seven; action eight {input {leaf eight-input {type string;}} output {leaf eight-output {type string;}}}"
+            "  notification nine {leaf nine-data {type string;}}}"
+            "leaf b {type string;} leaf-list c {type string;} list d {config false;}"
+            "choice x { case empty-x { choice empty-xc { case nothing;}} leaf e {type string;} case y {leaf f {type string;}}} anyxml g;"
+            "rpc h {input {leaf h-input {type string;}} output {leaf h-output {type string;}}}"
+            "rpc i;"
+            "notification j {leaf i-data {type string;}}"
+            "notification k;}", LYS_IN_YANG, &mod));
+    assert_non_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+    assert_string_equal("a", node->name);
+    cont = (const struct lysc_node_container *)node;
+    assert_non_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+    assert_string_equal("b", node->name);
+    assert_non_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+    assert_string_equal("c", node->name);
+    assert_non_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+    assert_string_equal("d", node->name);
+    assert_non_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+    assert_string_equal("e", node->name);
+    assert_non_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+    assert_string_equal("f", node->name);
+    assert_non_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+    assert_string_equal("g", node->name);
+    assert_non_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+    assert_string_equal("h", node->name);
+    rpc = (const struct lysc_action *)node;
+    assert_non_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+    assert_string_equal("i", node->name);
+    assert_non_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+    assert_string_equal("j", node->name);
+    assert_non_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+    assert_string_equal("k", node->name);
+    assert_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+    /* Inside container */
+    assert_non_null(node = lys_getnext(node, (const struct lysc_node *)cont, mod->compiled, 0));
+    assert_string_equal("one", node->name);
+    assert_non_null(node = lys_getnext(node, (const struct lysc_node *)cont, mod->compiled, 0));
+    assert_string_equal("two", node->name);
+    assert_non_null(node = lys_getnext(node, (const struct lysc_node *)cont, mod->compiled, 0));
+    assert_string_equal("three", node->name);
+    assert_non_null(node = four = lys_getnext(node, (const struct lysc_node *)cont, mod->compiled, 0));
+    assert_string_equal("four", node->name);
+    assert_non_null(node = lys_getnext(node, (const struct lysc_node *)cont, mod->compiled, 0));
+    assert_string_equal("five", node->name);
+    assert_non_null(node = lys_getnext(node, (const struct lysc_node *)cont, mod->compiled, 0));
+    assert_string_equal("six", node->name);
+    assert_non_null(node = lys_getnext(node, (const struct lysc_node *)cont, mod->compiled, 0));
+    assert_string_equal("seven", node->name);
+    assert_non_null(node = lys_getnext(node, (const struct lysc_node *)cont, mod->compiled, 0));
+    assert_string_equal("eight", node->name);
+    assert_non_null(node = lys_getnext(node, (const struct lysc_node *)cont, mod->compiled, 0));
+    assert_string_equal("nine", node->name);
+    assert_null(node = lys_getnext(node, (const struct lysc_node *)cont, mod->compiled, 0));
+    /* Inside RPC */
+    assert_non_null(node = lys_getnext(node, (const struct lysc_node *)rpc, mod->compiled, 0));
+    assert_string_equal("h-input", node->name);
+    assert_null(node = lys_getnext(node, (const struct lysc_node *)rpc, mod->compiled, 0));
+
+    /* options */
+    assert_non_null(node = lys_getnext(four, (const struct lysc_node *)cont, mod->compiled, LYS_GETNEXT_WITHCHOICE));
+    assert_string_equal("x", node->name);
+    assert_non_null(node = lys_getnext(node, (const struct lysc_node *)cont, mod->compiled, LYS_GETNEXT_WITHCHOICE));
+    assert_string_equal("seven", node->name);
+
+    assert_non_null(node = lys_getnext(four, (const struct lysc_node *)cont, mod->compiled, LYS_GETNEXT_NOCHOICE));
+    assert_string_equal("seven", node->name);
+
+    assert_non_null(node = lys_getnext(four, (const struct lysc_node *)cont, mod->compiled, LYS_GETNEXT_WITHCASE));
+    assert_string_equal("five", node->name);
+    assert_non_null(node = lys_getnext(node, (const struct lysc_node *)cont, mod->compiled, LYS_GETNEXT_WITHCASE));
+    assert_string_equal("y", node->name);
+    assert_non_null(node = lys_getnext(node, (const struct lysc_node *)cont, mod->compiled, LYS_GETNEXT_WITHCASE));
+    assert_string_equal("seven", node->name);
+
+    assert_non_null(node = lys_getnext(NULL, NULL, mod->compiled, LYS_GETNEXT_INTONPCONT));
+    assert_string_equal("one", node->name);
+
+    assert_non_null(node = lys_getnext(NULL, (const struct lysc_node *)rpc, mod->compiled, LYS_GETNEXT_OUTPUT));
+    assert_string_equal("h-output", node->name);
+    assert_null(node = lys_getnext(node, (const struct lysc_node *)rpc, mod->compiled, LYS_GETNEXT_OUTPUT));
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {namespace urn:c;prefix c; rpc c;}", LYS_IN_YANG, &mod));
+    assert_non_null(node = lys_getnext(NULL, NULL, mod->compiled, 0));
+    assert_string_equal("c", node->name);
+    assert_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module d {namespace urn:d;prefix d; notification d;}", LYS_IN_YANG, &mod));
+    assert_non_null(node = lys_getnext(NULL, NULL, mod->compiled, 0));
+    assert_string_equal("d", node->name);
+    assert_null(node = lys_getnext(node, NULL, mod->compiled, 0));
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module e {namespace urn:e;prefix e; container c {container cc;} leaf a {type string;}}", LYS_IN_YANG, &mod));
+    assert_non_null(node = lys_getnext(NULL, NULL, mod->compiled, 0));
+    assert_string_equal("c", node->name);
+    assert_non_null(node = lys_getnext(NULL, NULL, mod->compiled, LYS_GETNEXT_INTONPCONT));
+    assert_string_equal("a", node->name);
+}
+
+static void
+test_date(void **state)
+{
+    assert_int_equal(LY_EINVAL, lysp_check_date(NULL, NULL, 0, "date"));
+    CHECK_LOG("Invalid argument date (lysp_check_date()).", NULL);
+    assert_int_equal(LY_EINVAL, lysp_check_date(NULL, "x", 1, "date"));
+    CHECK_LOG("Invalid length 1 of a date.", NULL);
+    assert_int_equal(LY_EINVAL, lysp_check_date(NULL, "nonsencexx", 10, "date"));
+    CHECK_LOG("Invalid value \"nonsencexx\" of \"date\".", NULL);
+    assert_int_equal(LY_EINVAL, lysp_check_date(NULL, "123x-11-11", 10, "date"));
+    CHECK_LOG("Invalid value \"123x-11-11\" of \"date\".", NULL);
+    assert_int_equal(LY_EINVAL, lysp_check_date(NULL, "2018-13-11", 10, "date"));
+    CHECK_LOG("Invalid value \"2018-13-11\" of \"date\".", NULL);
+    assert_int_equal(LY_EINVAL, lysp_check_date(NULL, "2018-11-41", 10, "date"));
+    CHECK_LOG("Invalid value \"2018-11-41\" of \"date\".", NULL);
+    assert_int_equal(LY_EINVAL, lysp_check_date(NULL, "2018-02-29", 10, "date"));
+    CHECK_LOG("Invalid value \"2018-02-29\" of \"date\".", NULL);
+    assert_int_equal(LY_EINVAL, lysp_check_date(NULL, "2018.02-28", 10, "date"));
+    CHECK_LOG("Invalid value \"2018.02-28\" of \"date\".", NULL);
+    assert_int_equal(LY_EINVAL, lysp_check_date(NULL, "2018-02.28", 10, "date"));
+    CHECK_LOG("Invalid value \"2018-02.28\" of \"date\".", NULL);
+
+    assert_int_equal(LY_SUCCESS, lysp_check_date(NULL, "2018-11-11", 10, "date"));
+    assert_int_equal(LY_SUCCESS, lysp_check_date(NULL, "2018-02-28", 10, "date"));
+    assert_int_equal(LY_SUCCESS, lysp_check_date(NULL, "2016-02-29", 10, "date"));
+}
+
+static void
+test_revisions(void **state)
+{
+    struct lysp_revision *revs = NULL, *rev;
+
+    /* no error, it just does nothing */
+    lysp_sort_revisions(NULL);
+    CHECK_LOG(NULL, NULL);
+
+    /* revisions are stored in wrong order - the newest is the last */
+    LY_ARRAY_NEW_RET(NULL, revs, rev, );
+    strcpy(rev->date, "2018-01-01");
+    LY_ARRAY_NEW_RET(NULL, revs, rev, );
+    strcpy(rev->date, "2018-12-31");
+
+    assert_int_equal(2, LY_ARRAY_COUNT(revs));
+    assert_string_equal("2018-01-01", &revs[0]);
+    assert_string_equal("2018-12-31", &revs[1]);
+    /* the order should be fixed, so the newest revision will be the first in the array */
+    lysp_sort_revisions(revs);
+    assert_string_equal("2018-12-31", &revs[0]);
+    assert_string_equal("2018-01-01", &revs[1]);
+
+    LY_ARRAY_FREE(revs);
+}
+
+static void
+test_collision_typedef(void **state)
+{
+    const char *str;
+    char *submod;
+    struct module_clb_list list[3] = {0};
+
+    list[0].name = "asub";
+    list[1].name = "bsub";
+
+    /* collision with a built-in type */
+    str = "module a {namespace urn:a; prefix a; typedef binary {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"binary\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef bits {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"bits\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef boolean {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"boolean\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef decimal64 {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"decimal64\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef empty {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"empty\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef enumeration {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"enumeration\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef int8 {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"int8\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef int16 {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"int16\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef int32 {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"int32\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef int64 {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"int64\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef instance-identifier {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"instance-identifier\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef identityref {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"identityref\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef leafref {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"leafref\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef string {type int8;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"string\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef union {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"union\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef uint8 {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"uint8\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef uint16 {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"uint16\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef uint32 {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"uint32\" of typedef statement - name collision with a built-in type.", NULL);
+    str = "module a {namespace urn:a; prefix a; typedef uint64 {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"uint64\" of typedef statement - name collision with a built-in type.", NULL);
+
+    str = "module mytypes {namespace urn:types; prefix t; typedef binary_ {type string;} typedef bits_ {type string;} typedef boolean_ {type string;} "
+            "typedef decimal64_ {type string;} typedef empty_ {type string;} typedef enumeration_ {type string;} typedef int8_ {type string;} typedef int16_ {type string;}"
+            "typedef int32_ {type string;} typedef int64_ {type string;} typedef instance-identifier_ {type string;} typedef identityref_ {type string;}"
+            "typedef leafref_ {type string;} typedef string_ {type int8;} typedef union_ {type string;} typedef uint8_ {type string;} typedef uint16_ {type string;}"
+            "typedef uint32_ {type string;} typedef uint64_ {type string;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_SUCCESS);
+
+    /* collision in node's scope */
+    str = "module a {namespace urn:a; prefix a; container c {typedef y {type int8;} typedef y {type string;}}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"y\" of typedef statement - name collision with sibling type.", NULL);
+
+    /* collision with parent node */
+    str = "module a {namespace urn:a; prefix a; container c {container d {typedef y {type int8;}} typedef y {type string;}}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"y\" of typedef statement - name collision with another scoped type.", NULL);
+
+    /* collision with module's top-level */
+    str = "module a {namespace urn:a; prefix a; typedef x {type string;} container c {typedef x {type int8;}}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"x\" of typedef statement - scoped type collide with a top-level type.", NULL);
+
+    /* collision of submodule's node with module's top-level */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule b {belongs-to a {prefix a;} container c {typedef x {type string;}}}");
+    str = "module a {namespace urn:a; prefix a; include b; typedef x {type int8;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"x\" of typedef statement - scoped type collide with a top-level type.", NULL);
+
+    /* collision of module's node with submodule's top-level */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule b {belongs-to a {prefix a;} typedef x {type int8;}}");
+    str = "module a {namespace urn:a; prefix a; include b; container c {typedef x {type string;}}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"x\" of typedef statement - scoped type collide with a top-level type.", NULL);
+
+    /* collision of submodule's node with another submodule's top-level */
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; include asub; include bsub;}";
+    list[0].data = "submodule asub {belongs-to a {prefix a;} typedef g {type int;}}";
+    list[1].data = "submodule bsub {belongs-to a {prefix a;} container c {typedef g {type int;}}}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, module_clb, list);
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of typedef statement - scoped type collide with a top-level type.", NULL);
+
+    /* collision of module's top-levels */
+    str = "module a {namespace urn:a; prefix a; typedef test {type string;} typedef test {type int8;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"test\" of typedef statement - name collision with another top-level type.", NULL);
+
+    /* collision of submodule's top-levels */
+    submod = "submodule asub {belongs-to a {prefix a;} typedef g {type int;} typedef g {type int;}}";
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; include asub;}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, submod);
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of typedef statement - name collision with another top-level type.", NULL);
+
+    /* collision of module's top-level with submodule's top-levels */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule b {belongs-to a {prefix a;} typedef x {type string;}}");
+    str = "module a {namespace urn:a; prefix a; include b; typedef x {type int8;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"x\" of typedef statement - name collision with another top-level type.", NULL);
+
+    /* collision of submodule's top-level with another submodule's top-levels */
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; include asub; include bsub;}";
+    list[0].data = "submodule asub {belongs-to a {prefix a;} typedef g {type int;}}";
+    list[1].data = "submodule bsub {belongs-to a {prefix a;} typedef g {type int;}}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, module_clb, list);
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of typedef statement - name collision with another top-level type.", NULL);
+
+    /* error in type-stmt */
+    str = "module a {namespace urn:a; prefix a; container c {typedef x {type t{}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Unexpected end-of-input.", "Line number 1.");
+    UTEST_LOG_CLEAN;
+
+    /* no collision if the same names are in different scope */
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a;"
+            "container c {typedef g {type int;}} container d {typedef g {type int;}}}";
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+}
+
+static void
+test_collision_grouping(void **state)
+{
+    const char *str;
+    char *submod;
+    struct module_clb_list list[3] = {0};
+
+    list[0].name = "asub";
+    list[1].name = "bsub";
+
+    /* collision in node's scope */
+    str = "module a {namespace urn:a; prefix a; container c {grouping y; grouping y;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"y\" of grouping statement - name collision with sibling grouping.", NULL);
+
+    /* collision with parent node */
+    str = "module a {namespace urn:a; prefix a; container c {container d {grouping y;} grouping y;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"y\" of grouping statement - name collision with another scoped grouping.", NULL);
+
+    /* collision with module's top-level */
+    str = "module a {namespace urn:a; prefix a; grouping x; container c {grouping x;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"x\" of grouping statement - scoped grouping collide with a top-level grouping.", NULL);
+
+    /* collision of submodule's node with module's top-level */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule b {belongs-to a {prefix a;} container c {grouping x;}}");
+    str = "module a {namespace urn:a; prefix a; include b; grouping x;}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"x\" of grouping statement - scoped grouping collide with a top-level grouping.", NULL);
+
+    /* collision of module's node with submodule's top-level */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule b {belongs-to a {prefix a;} grouping x;}");
+    str = "module a {namespace urn:a; prefix a; include b; container c {grouping x;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"x\" of grouping statement - scoped grouping collide with a top-level grouping.", NULL);
+
+    /* collision of submodule's node with another submodule's top-level */
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; include asub; include bsub;}";
+    list[0].data = "submodule asub {belongs-to a {prefix a;} grouping g;}";
+    list[1].data = "submodule bsub {belongs-to a {prefix a;} container c {grouping g;}}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, module_clb, list);
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of grouping statement - scoped grouping collide with a top-level grouping.", NULL);
+
+    /* collision of module's top-levels */
+    str = "module a {namespace urn:a; prefix a; grouping test; grouping test;}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"test\" of grouping statement - name collision with another top-level grouping.", NULL);
+
+    /* collision of submodule's top-levels */
+    submod = "submodule asub {belongs-to a {prefix a;} grouping g; grouping g;}";
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; include asub;}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, submod);
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of grouping statement - name collision with another top-level grouping.", NULL);
+
+    /* collision of module's top-level with submodule's top-levels */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule b {belongs-to a {prefix a;} grouping x;}");
+    str = "module a {namespace urn:a; prefix a; include b; grouping x;}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"x\" of grouping statement - name collision with another top-level grouping.", NULL);
+
+    /* collision of submodule's top-level with another submodule's top-levels */
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; include asub; include bsub;}";
+    list[0].data = "submodule asub {belongs-to a {prefix a;} grouping g;}";
+    list[1].data = "submodule bsub {belongs-to a {prefix a;} grouping g;}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, module_clb, list);
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of grouping statement - name collision with another top-level grouping.", NULL);
+
+    /* collision in nested groupings, top-level */
+    str = "module a {namespace urn:a; prefix a; grouping g {grouping g;}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of grouping statement - scoped grouping collide with a top-level grouping.", NULL);
+
+    /* collision in nested groupings, in node */
+    str = "module a {namespace urn:a; prefix a; container c {grouping g {grouping g;}}}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of grouping statement - name collision with another scoped grouping.", NULL);
+
+    /* no collision if the same names are in different scope */
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a;"
+            "container c {grouping g;} container d {grouping g;}}";
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+}
+
+static void
+test_collision_identity(void **state)
+{
+    const char *str;
+    char *submod;
+    struct module_clb_list list[3] = {0};
+
+    list[0].name = "asub";
+    list[1].name = "bsub";
+
+    /* collision of module's top-levels */
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; identity g; identity g;}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of identity statement - name collision with another top-level identity.", NULL);
+
+    /* collision of submodule's top-levels */
+    submod = "submodule asub {belongs-to a {prefix a;} identity g; identity g;}";
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; include asub;}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, submod);
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of identity statement - name collision with another top-level identity.", NULL);
+
+    /* collision of module's top-level with submodule's top-levels */
+    submod = "submodule asub {belongs-to a {prefix a;} identity g;}";
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; include asub; identity g;}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, submod);
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of identity statement - name collision with another top-level identity.", NULL);
+
+    /* collision of submodule's top-level with another submodule's top-levels */
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; include asub; include bsub;}";
+    list[0].data = "submodule asub {belongs-to a {prefix a;} identity g;}";
+    list[1].data = "submodule bsub {belongs-to a {prefix a;} identity g;}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, module_clb, list);
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of identity statement - name collision with another top-level identity.", NULL);
+}
+
+static void
+test_collision_feature(void **state)
+{
+    const char *str;
+    char *submod;
+    struct module_clb_list list[3] = {0};
+
+    list[0].name = "asub";
+    list[1].name = "bsub";
+
+    /* collision of module's top-levels */
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; feature g; feature g;}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of feature statement - name collision with another top-level feature.", NULL);
+
+    /* collision of submodule's top-levels */
+    submod = "submodule asub {belongs-to a {prefix a;} feature g; feature g;}";
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; include asub;}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, submod);
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of feature statement - name collision with another top-level feature.", NULL);
+
+    /* collision of module's top-level with submodule's top-levels */
+    submod = "submodule asub {belongs-to a {prefix a;} feature g;}";
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; include asub; feature g;}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, submod);
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of feature statement - name collision with another top-level feature.", NULL);
+
+    /* collision of submodule's top-level with another submodule's top-levels */
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a; include asub; include bsub;}";
+    list[0].data = "submodule asub {belongs-to a {prefix a;} feature g;}";
+    list[1].data = "submodule bsub {belongs-to a {prefix a;} feature g;}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, module_clb, list);
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"a\" failed.", NULL,
+            "Duplicate identifier \"g\" of feature statement - name collision with another top-level feature.", NULL);
+}
+
+static void
+test_accessible_tree(void **state)
+{
+    const char *str;
+
+    /* config -> config */
+    str = "module a {\n"
+            "    namespace urn:a;\n"
+            "    prefix a;\n"
+            "    container cont {\n"
+            "        leaf l {\n"
+            "            type empty;\n"
+            "        }\n"
+            "    }\n"
+            "    container cont2 {\n"
+            "        leaf l2 {\n"
+            "            must ../../cont/l;\n"
+            "            type leafref {\n"
+            "                path /cont/l;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_SUCCESS);
+    CHECK_LOG_CTX(NULL, NULL);
+
+    /* config -> state leafref */
+    str = "module b {\n"
+            "    namespace urn:b;\n"
+            "    prefix b;\n"
+            "    container cont {\n"
+            "        config false;\n"
+            "        leaf l {\n"
+            "            type empty;\n"
+            "        }\n"
+            "    }\n"
+            "    container cont2 {\n"
+            "        leaf l2 {\n"
+            "            type leafref {\n"
+            "                path /cont/l;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid leafref path \"/cont/l\" - target is supposed to represent configuration data"
+            " (as the leafref does), but it does not.", "Schema location \"/b:cont2/l2\".");
+
+    /* config -> state must */
+    str = "module b {\n"
+            "    namespace urn:b;\n"
+            "    prefix b;\n"
+            "    container cont {\n"
+            "        config false;\n"
+            "        leaf l {\n"
+            "            type empty;\n"
+            "        }\n"
+            "    }\n"
+            "    container cont2 {\n"
+            "        leaf l2 {\n"
+            "            must ../../cont/l;\n"
+            "            type empty;\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_SUCCESS);
+    CHECK_LOG_CTX("Schema node \"cont\" for parent \"<config-root>\" not found; in expr \"../../cont\" "
+            "with context node \"/b:cont2/l2\".", NULL);
+
+    /* state -> config */
+    str = "module c {\n"
+            "    namespace urn:c;\n"
+            "    prefix c;\n"
+            "    container cont {\n"
+            "        leaf l {\n"
+            "            type empty;\n"
+            "        }\n"
+            "    }\n"
+            "    container cont2 {\n"
+            "        config false;\n"
+            "        leaf l2 {\n"
+            "            must ../../cont/l;\n"
+            "            type leafref {\n"
+            "                path /cont/l;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_SUCCESS);
+    CHECK_LOG_CTX(NULL, NULL);
+
+    /* notif -> state */
+    str = "module d {\n"
+            "    namespace urn:d;\n"
+            "    prefix d;\n"
+            "    container cont {\n"
+            "        config false;\n"
+            "        leaf l {\n"
+            "            type empty;\n"
+            "        }\n"
+            "    }\n"
+            "    notification notif {\n"
+            "        leaf l2 {\n"
+            "            must ../../cont/l;\n"
+            "            type leafref {\n"
+            "                path /cont/l;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_SUCCESS);
+    CHECK_LOG_CTX(NULL, NULL);
+
+    /* notif -> notif */
+    str = "module e {\n"
+            "    namespace urn:e;\n"
+            "    prefix e;\n"
+            "    notification notif {\n"
+            "        leaf l {\n"
+            "            type empty;\n"
+            "        }\n"
+            "        leaf l2 {\n"
+            "            must ../../notif/l;\n"
+            "            type leafref {\n"
+            "                path /notif/l;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_SUCCESS);
+    CHECK_LOG_CTX(NULL, NULL);
+
+    /* rpc input -> state */
+    str = "module f {\n"
+            "    namespace urn:f;\n"
+            "    prefix f;\n"
+            "    container cont {\n"
+            "        config false;\n"
+            "        leaf l {\n"
+            "            type empty;\n"
+            "        }\n"
+            "    }\n"
+            "    rpc rp {\n"
+            "        input {\n"
+            "            leaf l2 {\n"
+            "                must ../../cont/l;\n"
+            "                type leafref {\n"
+            "                    path /cont/l;\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_SUCCESS);
+    CHECK_LOG_CTX(NULL, NULL);
+
+    /* rpc input -> rpc input */
+    str = "module g {\n"
+            "    namespace urn:g;\n"
+            "    prefix g;\n"
+            "    rpc rp {\n"
+            "        input {\n"
+            "            leaf l {\n"
+            "                type empty;\n"
+            "            }\n"
+            "            leaf l2 {\n"
+            "                must ../l;\n"
+            "                type leafref {\n"
+            "                    path /rp/l;\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_SUCCESS);
+    CHECK_LOG_CTX(NULL, NULL);
+
+    /* rpc input -> rpc output leafref */
+    str = "module h {\n"
+            "    namespace urn:h;\n"
+            "    prefix h;\n"
+            "    rpc rp {\n"
+            "        input {\n"
+            "            leaf l2 {\n"
+            "                type leafref {\n"
+            "                    path /rp/l;\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "        output {\n"
+            "            leaf l {\n"
+            "                type empty;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Not found node \"l\" in path.", "Schema location \"/h:rp/input/l2\".");
+
+    /* rpc input -> rpc output must */
+    str = "module h {\n"
+            "    namespace urn:h;\n"
+            "    prefix h;\n"
+            "    rpc rp {\n"
+            "        input {\n"
+            "            leaf l2 {\n"
+            "                must ../l;\n"
+            "                type empty;\n"
+            "            }\n"
+            "        }\n"
+            "        output {\n"
+            "            leaf l {\n"
+            "                type empty;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_SUCCESS);
+    CHECK_LOG_CTX("Schema node \"l\" for parent \"/h:rp\" not found; in expr \"../l\" with context node \"/h:rp/input/l2\".", NULL);
+
+    /* rpc input -> notif leafref */
+    str = "module i {\n"
+            "    namespace urn:i;\n"
+            "    prefix i;\n"
+            "    rpc rp {\n"
+            "        input {\n"
+            "            leaf l2 {\n"
+            "                type leafref {\n"
+            "                    path ../../notif/l;\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "    notification notif {\n"
+            "        leaf l {\n"
+            "            type empty;\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Not found node \"notif\" in path.", "Schema location \"/i:rp/input/l2\".");
+
+    /* rpc input -> notif must */
+    str = "module i {\n"
+            "    namespace urn:i;\n"
+            "    prefix i;\n"
+            "    rpc rp {\n"
+            "        input {\n"
+            "            leaf l2 {\n"
+            "                must /notif/l;\n"
+            "                type empty;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "    notification notif {\n"
+            "        leaf l {\n"
+            "            type empty;\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_SUCCESS);
+    CHECK_LOG_CTX("Schema node \"notif\" for parent \"<root>\" not found; in expr \"/notif\" "
+            "with context node \"/i:rp/input/l2\".", NULL);
+
+    /* action output -> state */
+    str = "module j {\n"
+            "    yang-version 1.1;\n"
+            "    namespace urn:j;\n"
+            "    prefix j;\n"
+            "    container cont {\n"
+            "        list ll {\n"
+            "            key k;\n"
+            "            leaf k {\n"
+            "                type string;\n"
+            "            }\n"
+            "            action act {\n"
+            "                output {\n"
+            "                    leaf l2 {\n"
+            "                        must /cont/l;\n"
+            "                        type leafref {\n"
+            "                            path ../../../l;\n"
+            "                        }\n"
+            "                    }\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "        leaf l {\n"
+            "            config false;\n"
+            "            type empty;\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_SUCCESS);
+    CHECK_LOG_CTX(NULL, NULL);
+
+    /* action output -> action input leafref */
+    str = "module k {\n"
+            "    yang-version 1.1;\n"
+            "    namespace urn:k;\n"
+            "    prefix k;\n"
+            "    container cont {\n"
+            "        list ll {\n"
+            "            key k;\n"
+            "            leaf k {\n"
+            "                type string;\n"
+            "            }\n"
+            "            action act {\n"
+            "                input {\n"
+            "                    leaf l {\n"
+            "                        type empty;\n"
+            "                    }\n"
+            "                }\n"
+            "                output {\n"
+            "                    leaf l2 {\n"
+            "                        type leafref {\n"
+            "                            path ../l;\n"
+            "                        }\n"
+            "                    }\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Not found node \"l\" in path.", "Schema location \"/k:cont/ll/act/output/l2\".");
+
+    /* action output -> action input must */
+    str = "module k {\n"
+            "    yang-version 1.1;\n"
+            "    namespace urn:k;\n"
+            "    prefix k;\n"
+            "    container cont {\n"
+            "        list ll {\n"
+            "            key k;\n"
+            "            leaf k {\n"
+            "                type string;\n"
+            "            }\n"
+            "            action act {\n"
+            "                input {\n"
+            "                    leaf l {\n"
+            "                        type empty;\n"
+            "                    }\n"
+            "                }\n"
+            "                output {\n"
+            "                    leaf l2 {\n"
+            "                        must /cont/ll/act/l;\n"
+            "                        type empty;\n"
+            "                    }\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_SUCCESS);
+    CHECK_LOG_CTX("Schema node \"l\" for parent \"/k:cont/ll/act\" not found; in expr \"/cont/ll/act/l\" "
+            "with context node \"/k:cont/ll/act/output/l2\".", NULL);
+}
+
+static void
+test_includes(void **state)
+{
+    struct lys_module *mod;
+
+    {
+        /* YANG 1.0 - the missing include sub_a_two in main_a will be injected from sub_a_one */
+        struct module_clb_list list[] = {
+            {"main_a", "module main_a { namespace urn:test:main_a; prefix ma; include sub_a_one;}"},
+            {"sub_a_one", "submodule sub_a_one { belongs-to main_a { prefix ma; } include sub_a_two;}"},
+            {"sub_a_two", "submodule sub_a_two { belongs-to main_a { prefix ma; } }"},
+            {NULL, NULL}
+        };
+
+        ly_ctx_set_module_imp_clb(UTEST_LYCTX, module_clb, list);
+        mod = ly_ctx_load_module(UTEST_LYCTX, "main_a", NULL, NULL);
+        assert_non_null(mod);
+        assert_int_equal(2, LY_ARRAY_COUNT(mod->parsed->includes));
+        assert_true(mod->parsed->includes[1].injected);
+    }
+
+    {
+        /* YANG 1.1 - the missing include sub_b_two in main_b is error */
+        struct module_clb_list list[] = {
+            {"main_b", "module main_b { yang-version 1.1; namespace urn:test:main_b; prefix mb; include sub_b_one;}"},
+            {"sub_b_one", "submodule sub_b_one { yang-version 1.1; belongs-to main_b { prefix mb; } include sub_b_two;}"},
+            {"sub_b_two", "submodule sub_b_two { yang-version 1.1; belongs-to main_b { prefix mb; } }"},
+            {NULL, NULL}
+        };
+
+        ly_ctx_set_module_imp_clb(UTEST_LYCTX, module_clb, list);
+        mod = ly_ctx_load_module(UTEST_LYCTX, "main_b", NULL, NULL);
+        assert_null(mod);
+        CHECK_LOG_CTX("Loading \"main_b\" module failed.", NULL,
+                "Data model \"main_b\" not found in local searchdirs.", NULL,
+                "Parsing module \"main_b\" failed.", NULL,
+                "Including \"sub_b_one\" submodule into \"main_b\" failed.", NULL,
+                "Data model \"sub_b_one\" not found in local searchdirs.", NULL,
+                "Parsing submodule \"sub_b_one\" failed.", NULL,
+                "YANG 1.1 requires all submodules to be included from main module. But submodule \"sub_b_one\" includes "
+                "submodule \"sub_b_two\" which is not included by main module \"main_b\".", NULL,
+                "YANG version 1.1 expects all includes in main module, includes in submodules (sub_b_one) are not necessary.", NULL);
+    }
+
+    {
+        /* YANG 1.1 - all includes are in main_c, includes in submodules are not necessary, so expect warning */
+        struct module_clb_list list[] = {
+            {"main_c", "module main_c { yang-version 1.1; namespace urn:test:main_c; prefix mc; include sub_c_one; include sub_c_two;}"},
+            {"sub_c_one", "submodule sub_c_one { yang-version 1.1; belongs-to main_c { prefix mc; } include sub_c_two;}"},
+            {"sub_c_two", "submodule sub_c_two { yang-version 1.1; belongs-to main_c { prefix mc; } include sub_c_one;}"},
+            {NULL, NULL}
+        };
+
+        ly_ctx_set_module_imp_clb(UTEST_LYCTX, module_clb, list);
+        mod = ly_ctx_load_module(UTEST_LYCTX, "main_c", NULL, NULL);
+        assert_non_null(mod);
+        assert_int_equal(2, LY_ARRAY_COUNT(mod->parsed->includes));
+        assert_false(mod->parsed->includes[1].injected);
+        /* result is ok, but log includes the warning */
+        CHECK_LOG_CTX("YANG version 1.1 expects all includes in main module, includes in submodules (sub_c_two) are not necessary.", NULL);
+    }
+}
+
+static void
+test_key_order(void **state)
+{
+    struct lys_module *mod;
+    const struct lysc_node *node;
+
+    struct module_clb_list list1[] = {
+        {"a", "module a {"
+            "yang-version 1.1;"
+            "namespace urn:test:a;"
+            "prefix a;"
+            "list l {"
+            "  key \"k1 k2\";"
+            "  leaf k2 {type string;}"
+            "  leaf k1 {type string;}"
+            "}"
+            "}"},
+        {NULL, NULL}
+    };
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, module_clb, list1);
+    mod = ly_ctx_load_module(UTEST_LYCTX, "a", NULL, NULL);
+    assert_non_null(mod);
+
+    node = lysc_node_child(mod->compiled->data);
+    assert_string_equal("k1", node->name);
+    node = node->next;
+    assert_string_equal("k2", node->name);
+
+    struct module_clb_list list2[] = {
+        {"b", "module b {"
+            "yang-version 1.1;"
+            "namespace urn:test:b;"
+            "prefix b;"
+            "list l {"
+            "  key \"k1 k2 k3 k4\";"
+            "  leaf k4 {type string;}"
+            "  container c {"
+            "    leaf l1 {type string;}"
+            "  }"
+            "  leaf k2 {type string;}"
+            "  leaf l2 {type string;}"
+            "  leaf k1 {type string;}"
+            "  leaf k3 {type string;}"
+            "}"
+            "}"},
+        {NULL, NULL}
+    };
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, module_clb, list2);
+    mod = ly_ctx_load_module(UTEST_LYCTX, "b", NULL, NULL);
+    assert_non_null(mod);
+
+    node = lysc_node_child(mod->compiled->data);
+    assert_string_equal("k1", node->name);
+    node = node->next;
+    assert_string_equal("k2", node->name);
+    node = node->next;
+    assert_string_equal("k3", node->name);
+    node = node->next;
+    assert_string_equal("k4", node->name);
+}
+
+static void
+test_disabled_enum(void **state)
+{
+    const char *str;
+
+    /* no enabled enum */
+    str = "module a {"
+            "yang-version 1.1;"
+            "namespace urn:test:a;"
+            "prefix a;"
+            "feature f;"
+            "leaf l {type enumeration {"
+            "  enum e1 {if-feature f;}"
+            "  enum e2 {if-feature f;}"
+            "}}"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Enumeration type of node \"l\" without any (or all disabled) valid values.", "Schema location \"/a:l\".");
+
+    /* disabled default value */
+    str = "module a {"
+            "yang-version 1.1;"
+            "namespace urn:test:a;"
+            "prefix a;"
+            "feature f;"
+            "leaf l {"
+            "  type enumeration {"
+            "    enum e1 {if-feature f;}"
+            "    enum e2;"
+            "  }"
+            "  default e1;"
+            "}"
+            "}";
+    assert_int_equal(lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Invalid enumeration value \"e1\".).",
+            "Schema location \"/a:l\".");
+}
+
+static void
+test_identity(void **state)
+{
+    struct lys_module *mod, *mod_imp;
+
+    /*
+     * parsing YANG
+     */
+    TEST_STMT_DUP(1, 0, "identity id", "description", "a", "b", "1");
+    TEST_STMT_DUP(1, 0, "identity id", "reference", "a", "b", "1");
+    TEST_STMT_DUP(1, 0, "identity id", "status", "current", "obsolete", "1");
+
+    /* full content */
+    TEST_SCHEMA_OK(1, 0, "identityone",
+            "identity test {base \"a\";base b; description text;reference \'another text\';status current; if-feature x;if-feature y; identityone:ext;}"
+            "identity a; identity b; extension ext; feature x; feature y;", mod);
+    assert_non_null(mod->parsed->identities);
+    assert_int_equal(3, LY_ARRAY_COUNT(mod->parsed->identities));
+
+    /* invalid substatement */
+    TEST_STMT_SUBSTM_ERR(0, "identity", "organization", "XXX");
+
+    /*
+     * parsing YIN
+     */
+    /* max subelems */
+    TEST_SCHEMA_OK(1, 1, "identityone-yin", "<identity name=\"ident-name\">"
+            "<if-feature name=\"iff\"/>"
+            "<base name=\"base-name\"/>"
+            "<status value=\"deprecated\"/>"
+            "<description><text>desc</text></description>"
+            "<reference><text>ref</text></reference>"
+            /* TODO yin-extension-prefix-compilation-bug "<myext:ext xmlns:myext=\"urn:libyang:test:identityone-yin\"/>" */
+            "</identity><extension name=\"ext\"/><identity name=\"base-name\"/><feature name=\"iff\"/>", mod);
+    assert_int_equal(2, LY_ARRAY_COUNT(mod->parsed->identities));
+    assert_string_equal(mod->parsed->identities[0].name, "ident-name");
+    assert_string_equal(mod->parsed->identities[0].bases[0], "base-name");
+    assert_string_equal(mod->parsed->identities[0].iffeatures[0].str, "iff");
+    assert_string_equal(mod->parsed->identities[0].dsc, "desc");
+    assert_string_equal(mod->parsed->identities[0].ref, "ref");
+    assert_true(mod->parsed->identities[0].flags & LYS_STATUS_DEPRC);
+    /*assert_string_equal(mod->parsed->identities[0].exts[0].name, "ext");
+    assert_non_null(mod->parsed->identities[0].exts[0].compiled);
+    assert_int_equal(mod->parsed->identities[0].exts[0].yin, 1);
+    assert_int_equal(mod->parsed->identities[0].exts[0].insubstmt_index, 0);
+    assert_int_equal(mod->parsed->identities[0].exts[0].insubstmt, LYEXT_SUBSTMT_SELF);*/
+
+    /* min subelems */
+    TEST_SCHEMA_OK(1, 1, "identitytwo-yin", "<identity name=\"ident-name\" />", mod);
+    assert_int_equal(1, LY_ARRAY_COUNT(mod->parsed->identities));
+    assert_string_equal(mod->parsed->identities[0].name, "ident-name");
+
+    /* invalid substatement */
+    TEST_SCHEMA_PARSE_ERR(0, 1, "inv", "<identity name=\"ident-name\"><if-feature name=\"iff\"/></identity>",
+            "Invalid sub-elemnt \"if-feature\" of \"identity\" element - "
+            "this sub-element is allowed only in modules with version 1.1 or newer.", "Line number 1.");
+
+    /*
+     * compiling
+     */
+    TEST_SCHEMA_OK(0, 0, "a", "identity a1;", mod_imp);
+    TEST_SCHEMA_OK(1, 0, "b", "import a {prefix a;}"
+            "identity b1; identity b2; identity b3 {base b1; base b:b2; base a:a1;}"
+            "identity b4 {base b:b1; base b3;}", mod);
+    assert_non_null(mod_imp->compiled);
+    assert_non_null(mod_imp->identities);
+    assert_non_null(mod->identities);
+    assert_non_null(mod_imp->identities[0].derived);
+    assert_int_equal(1, LY_ARRAY_COUNT(mod_imp->identities[0].derived));
+    assert_ptr_equal(mod_imp->identities[0].derived[0], &mod->identities[2]);
+    assert_non_null(mod->identities[0].derived);
+    assert_int_equal(2, LY_ARRAY_COUNT(mod->identities[0].derived));
+    assert_ptr_equal(mod->identities[0].derived[0], &mod->identities[2]);
+    assert_ptr_equal(mod->identities[0].derived[1], &mod->identities[3]);
+    assert_non_null(mod->identities[1].derived);
+    assert_int_equal(1, LY_ARRAY_COUNT(mod->identities[1].derived));
+    assert_ptr_equal(mod->identities[1].derived[0], &mod->identities[2]);
+    assert_non_null(mod->identities[2].derived);
+    assert_int_equal(1, LY_ARRAY_COUNT(mod->identities[2].derived));
+    assert_ptr_equal(mod->identities[2].derived[0], &mod->identities[3]);
+
+    TEST_SCHEMA_OK(1, 0, "c", "identity c2 {base c1;} identity c1;", mod);
+    assert_int_equal(1, LY_ARRAY_COUNT(mod->identities[1].derived));
+    assert_ptr_equal(mod->identities[1].derived[0], &mod->identities[0]);
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule inv_sub {belongs-to inv {prefix inv;} identity i1;}");
+    TEST_SCHEMA_ERR(0, 0, "inv", "identity i1 {base i2;}", "Unable to find base (i2) of identity \"i1\".", "/inv:{identity='i1'}");
+    TEST_SCHEMA_ERR(0, 0, "inv", "identity i1 {base i1;}", "Identity \"i1\" is derived from itself.", "/inv:{identity='i1'}");
+    TEST_SCHEMA_ERR(0, 0, "inv", "identity i1 {base i2;}identity i2 {base i3;}identity i3 {base i1;}",
+            "Identity \"i1\" is indirectly derived from itself.", "/inv:{identity='i3'}");
+
+    /* base in non-implemented module */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb,
+            "module base {namespace \"urn\"; prefix b; identity i1; identity i2 {base i1;}}");
+    TEST_SCHEMA_OK(0, 0, "ident", "import base {prefix b;} identity ii {base b:i1;}", mod);
+
+    /* default value from non-implemented module */
+    TEST_SCHEMA_ERR(0, 0, "ident2", "import base {prefix b;} leaf l {type identityref {base b:i1;} default b:i2;}",
+            "Invalid default - value does not fit the type (Invalid identityref \"b:i2\" value"
+            " - identity found in non-implemented module \"base\".).", "Schema location \"/ident2:l\".");
+
+    /* default value in typedef from non-implemented module */
+    TEST_SCHEMA_ERR(0, 0, "ident2", "import base {prefix b;} typedef t1 {type identityref {base b:i1;} default b:i2;}"
+            "leaf l {type t1;}", "Invalid default - value does not fit the type (Invalid"
+            " identityref \"b:i2\" value - identity found in non-implemented module \"base\".).", "Schema location \"/ident2:l\".");
+
+    /*
+     * printing
+     */
+
+    /*
+     * cleanup
+     */
+}
+
+static void
+test_feature(void **state)
+{
+    struct lys_module *mod;
+    const struct lysp_feature *f;
+
+    /*
+     * parsing YANG
+     */
+
+    TEST_STMT_DUP(1, 0, "feature f", "description", "a", "b", "1");
+    TEST_STMT_DUP(1, 0, "feature f", "reference", "a", "b", "1");
+    TEST_STMT_DUP(1, 0, "feature f", "status", "current", "obsolete", "1");
+
+    /* full content */
+    TEST_SCHEMA_OK(1, 0, "featureone",
+            "feature test {description text;reference \'another text\';status current; if-feature x; if-feature y; featureone:ext;}"
+            "extension ext; feature x; feature y;", mod);
+    assert_non_null(mod->parsed->features);
+    assert_int_equal(3, LY_ARRAY_COUNT(mod->parsed->features));
+
+    /* invalid substatement */
+    TEST_STMT_SUBSTM_ERR(0, "feature", "organization", "XXX");
+
+    /*
+     * parsing YIN
+     */
+    /* max subelems */
+    TEST_SCHEMA_OK(0, 1, "featureone-yin", "<feature name=\"feature-name\">"
+            "<if-feature name=\"iff\"/>"
+            "<status value=\"deprecated\"/>"
+            "<description><text>desc</text></description>"
+            "<reference><text>ref</text></reference>"
+            /* TODO yin-extension-prefix-compilation-bug "<myext:ext xmlns:myext=\"urn:libyang:test:featureone-yin\"/>" */
+            "</feature><extension name=\"ext\"/><feature name=\"iff\"/>", mod);
+    assert_int_equal(2, LY_ARRAY_COUNT(mod->parsed->features));
+    assert_string_equal(mod->parsed->features[0].name, "feature-name");
+    assert_string_equal(mod->parsed->features[0].dsc, "desc");
+    assert_true(mod->parsed->features[0].flags & LYS_STATUS_DEPRC);
+    assert_string_equal(mod->parsed->features[0].iffeatures[0].str, "iff");
+    assert_string_equal(mod->parsed->features[0].ref, "ref");
+    /*assert_string_equal(mod->parsed->features[0].exts[0].name, "ext");
+    assert_int_equal(mod->parsed->features[0].exts[0].insubstmt_index, 0);
+    assert_int_equal(mod->parsed->features[0].exts[0].insubstmt, LYEXT_SUBSTMT_SELF);*/
+
+    /* min subelems */
+    TEST_SCHEMA_OK(0, 1, "featuretwo-yin", "<feature name=\"feature-name\"/>", mod)
+    assert_int_equal(1, LY_ARRAY_COUNT(mod->parsed->features));
+    assert_string_equal(mod->parsed->features[0].name, "feature-name");
+
+    /* invalid substatement */
+    TEST_SCHEMA_PARSE_ERR(0, 1, "inv", "<feature name=\"feature-name\"><organization><text>org</text></organization></feature>",
+            "Unexpected sub-element \"organization\" of \"feature\" element.", "Line number 1.");
+
+    /*
+     * compiling
+     */
+
+    TEST_SCHEMA_OK(1, 0, "a", "feature f1 {description test1;reference test2;status current;} feature f2; feature f3;\n"
+            "feature orfeature {if-feature \"f1 or f2\";}\n"
+            "feature andfeature {if-feature \"f1 and f2\";}\n"
+            "feature f6 {if-feature \"not f1\";}\n"
+            "feature f7 {if-feature \"(f2 and f3) or (not f1)\";}\n"
+            "feature f8 {if-feature \"f1 or f2 or f3 or orfeature or andfeature\";}\n"
+            "feature f9 {if-feature \"not not f1\";}", mod);
+    assert_non_null(mod->parsed->features);
+    assert_int_equal(9, LY_ARRAY_COUNT(mod->parsed->features));
+
+    /* all features are disabled by default */
+    LY_ARRAY_FOR(mod->parsed->features, struct lysp_feature, f) {
+        assert_false(f->flags & LYS_FENABLED);
+    }
+
+    /* some invalid expressions */
+    TEST_SCHEMA_PARSE_ERR(1, 0, "inv", "feature f{if-feature f1;}",
+            "Invalid value \"f1\" of if-feature - unable to find feature \"f1\".", NULL);
+    TEST_SCHEMA_PARSE_ERR(1, 0, "inv", "feature f1; feature f2{if-feature 'f and';}",
+            "Invalid value \"f and\" of if-feature - unexpected end of expression.", NULL);
+    TEST_SCHEMA_PARSE_ERR(1, 0, "inv", "feature f{if-feature 'or';}",
+            "Invalid value \"or\" of if-feature - unexpected end of expression.", NULL);
+    TEST_SCHEMA_PARSE_ERR(1, 0, "inv", "feature f1; feature f2{if-feature '(f1';}",
+            "Invalid value \"(f1\" of if-feature - non-matching opening and closing parentheses.", NULL);
+    TEST_SCHEMA_PARSE_ERR(1, 0, "inv", "feature f1; feature f2{if-feature 'f1)';}",
+            "Invalid value \"f1)\" of if-feature - non-matching opening and closing parentheses.", NULL);
+    TEST_SCHEMA_PARSE_ERR(1, 0, "inv", "feature f1; feature f2{if-feature ---;}",
+            "Invalid value \"---\" of if-feature - unable to find feature \"---\".", NULL);
+    TEST_SCHEMA_PARSE_ERR(0, 0, "inv", "feature f1; feature f2{if-feature 'not f1';}",
+            "Invalid value \"not f1\" of if-feature - YANG 1.1 expression in YANG 1.0 module.", NULL);
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule inv_sub {belongs-to inv {prefix inv;} feature f1;}");
+    TEST_SCHEMA_PARSE_ERR(0, 0, "inv", "feature f1 {if-feature f2;} feature f2 {if-feature f1;}",
+            "Feature \"f1\" is indirectly referenced from itself.", NULL);
+    TEST_SCHEMA_PARSE_ERR(0, 0, "inv", "feature f1 {if-feature f1;}",
+            "Feature \"f1\" is referenced from itself.", NULL);
+    TEST_SCHEMA_PARSE_ERR(1, 0, "inv", "feature f {if-feature ();}",
+            "Invalid value \"()\" of if-feature - number of features in expression does not match the required number of operands for the operations.", NULL);
+    TEST_SCHEMA_PARSE_ERR(1, 0, "inv", "feature f1; feature f {if-feature 'f1(';}",
+            "Invalid value \"f1(\" of if-feature - non-matching opening and closing parentheses.", NULL);
+    TEST_SCHEMA_PARSE_ERR(1, 0, "inv", "feature f1; feature f {if-feature 'and f1';}",
+            "Invalid value \"and f1\" of if-feature - missing feature/expression before \"and\" operation.", NULL);
+    TEST_SCHEMA_PARSE_ERR(1, 0, "inv", "feature f1; feature f {if-feature 'f1 not ';}",
+            "Invalid value \"f1 not \" of if-feature - unexpected end of expression.", NULL);
+    TEST_SCHEMA_PARSE_ERR(1, 0, "inv", "feature f1; feature f {if-feature 'f1 not not ';}",
+            "Invalid value \"f1 not not \" of if-feature - unexpected end of expression.", NULL);
+    TEST_SCHEMA_PARSE_ERR(1, 0, "inv", "feature f1; feature f2; feature f {if-feature 'or f1 f2';}",
+            "Invalid value \"or f1 f2\" of if-feature - missing feature/expression before \"or\" operation.", NULL);
+
+    /*
+     * printing
+     */
+
+    /*
+     * cleanup
+     */
+}
+
+static void
+test_extension_argument(void **state)
+{
+    struct lys_module *mod;
+    const char *mod_def_yang = "module a {\n"
+            "  namespace \"urn:a\";\n"
+            "  prefix a;\n\n"
+            "  extension e {\n"
+            "    argument name;\n"
+            "  }\n\n"
+            "  a:e \"aaa\";\n"
+            "}\n";
+    const char *mod_def_yin =
+            "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"a\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:a=\"urn:a\">\n"
+            "  <namespace uri=\"urn:a\"/>\n"
+            "  <prefix value=\"a\"/>\n"
+            "  <extension name=\"e\">\n"
+            "    <argument name=\"name\"/>\n"
+            "  </extension>\n"
+            "  <a:e name=\"aaa\"/>\n"
+            "</module>\n";
+    const char *mod_test_yin, *mod_test_yang;
+    char *printed;
+
+    mod_test_yang = "module b {\n"
+            "  namespace \"urn:b\";\n"
+            "  prefix b;\n\n"
+            "  import a {\n"
+            "    prefix a;\n"
+            "  }\n\n"
+            "  a:e \"xxx\";\n"
+            "}\n";
+    mod_test_yin =
+            "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"b\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:b=\"urn:b\"\n"
+            "        xmlns:a=\"urn:a\">\n"
+            "  <namespace uri=\"urn:b\"/>\n"
+            "  <prefix value=\"b\"/>\n"
+            "  <import module=\"a\">\n"
+            "    <prefix value=\"a\"/>\n"
+            "  </import>\n"
+            "  <a:e name=\"xxx\"/>\n"
+            "</module>\n";
+
+    /* from YANG */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, (void *)mod_def_yang);
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, mod_test_yang, LYS_IN_YANG, &mod));
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, mod_test_yang);
+    free(printed);
+
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, mod_test_yin);
+    free(printed);
+
+    assert_non_null(mod = ly_ctx_get_module(UTEST_LYCTX, "a", NULL));
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, mod_def_yang);
+    free(printed);
+
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, mod_def_yin);
+    free(printed);
+
+    /* context reset */
+    ly_ctx_destroy(UTEST_LYCTX);
+    ly_ctx_new(NULL, 0, &UTEST_LYCTX);
+
+    /* from YIN */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, (void *)mod_def_yin);
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, mod_test_yin, LYS_IN_YIN, &mod));
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, mod_test_yang);
+    free(printed);
+
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, mod_test_yin);
+    free(printed);
+
+    assert_non_null(mod = ly_ctx_get_module(UTEST_LYCTX, "a", NULL));
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, mod_def_yang);
+    free(printed);
+
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, mod_def_yin);
+    free(printed);
+}
+
+static void
+test_extension_argument_element(void **state)
+{
+    struct lys_module *mod;
+    const char *mod_def_yang = "module a {\n"
+            "  namespace \"urn:a\";\n"
+            "  prefix a;\n\n"
+            "  extension e {\n"
+            "    argument name {\n"
+            "      yin-element true;\n"
+            "    }\n"
+            "  }\n\n"
+            "  a:e \"aaa\";\n"
+            "}\n";
+    const char *mod_def_yin =
+            "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"a\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:a=\"urn:a\">\n"
+            "  <namespace uri=\"urn:a\"/>\n"
+            "  <prefix value=\"a\"/>\n"
+            "  <extension name=\"e\">\n"
+            "    <argument name=\"name\">\n"
+            "      <yin-element value=\"true\"/>\n"
+            "    </argument>\n"
+            "  </extension>\n"
+            "  <a:e>\n"
+            "    <a:name>aaa</a:name>\n"
+            "  </a:e>\n"
+            "</module>\n";
+    const char *mod_test_yin, *mod_test_yang;
+    char *printed;
+
+    mod_test_yang = "module b {\n"
+            "  namespace \"urn:b\";\n"
+            "  prefix b;\n\n"
+            "  import a {\n"
+            "    prefix a;\n"
+            "  }\n\n"
+            "  a:e \"xxx\";\n"
+            "}\n";
+    mod_test_yin =
+            "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"b\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:b=\"urn:b\"\n"
+            "        xmlns:a=\"urn:a\">\n"
+            "  <namespace uri=\"urn:b\"/>\n"
+            "  <prefix value=\"b\"/>\n"
+            "  <import module=\"a\">\n"
+            "    <prefix value=\"a\"/>\n"
+            "  </import>\n"
+            "  <a:e>\n"
+            "    <a:name>xxx</a:name>\n"
+            "  </a:e>\n"
+            "</module>\n";
+
+    /* from YANG */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, (void *)mod_def_yang);
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, mod_test_yang, LYS_IN_YANG, &mod));
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, mod_test_yang);
+    free(printed);
+
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, mod_test_yin);
+    free(printed);
+
+    assert_non_null(mod = ly_ctx_get_module(UTEST_LYCTX, "a", NULL));
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, mod_def_yang);
+    free(printed);
+
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, mod_def_yin);
+    free(printed);
+
+    /* context reset */
+    ly_ctx_destroy(UTEST_LYCTX);
+    ly_ctx_new(NULL, 0, &UTEST_LYCTX);
+
+    /* from YIN */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, (void *)mod_def_yin);
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, mod_test_yin, LYS_IN_YIN, &mod));
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, mod_test_yang);
+    free(printed);
+
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, mod_test_yin);
+    free(printed);
+
+    assert_non_null(mod = ly_ctx_get_module(UTEST_LYCTX, "a", NULL));
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, mod_def_yang);
+    free(printed);
+
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, mod_def_yin);
+    free(printed);
+
+    /* invalid */
+    mod_test_yang = "module x { namespace \"urn:x\"; prefix x; import a { prefix a; } a:e; }";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, mod_test_yang, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"x\" failed.", NULL,
+            "Extension instance \"a:e\" missing argument element \"name\".", NULL);
+
+    mod_test_yin = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"x\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:x=\"urn:x\"\n"
+            "        xmlns:a=\"urn:a\">\n"
+            "  <namespace uri=\"urn:x\"/>\n"
+            "  <prefix value=\"x\"/>\n"
+            "  <import module=\"a\">\n"
+            "    <prefix value=\"a\"/>\n"
+            "  </import>\n\n"
+            "  <a:e/>\n"
+            "</module>\n";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, mod_test_yin, LYS_IN_YIN, NULL));
+    CHECK_LOG_CTX("Parsing module \"x\" failed.", NULL,
+            "Extension instance \"a:e\" missing argument element \"name\".", NULL);
+
+    mod_test_yin = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"x\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:x=\"urn:x\"\n"
+            "        xmlns:a=\"urn:a\">\n"
+            "  <namespace uri=\"urn:x\"/>\n"
+            "  <prefix value=\"x\"/>\n"
+            "  <import module=\"a\">\n"
+            "    <prefix value=\"a\"/>\n"
+            "  </import>\n\n"
+            "  <a:e name=\"xxx\"/>\n"
+            "</module>\n";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, mod_test_yin, LYS_IN_YIN, NULL));
+    CHECK_LOG_CTX("Parsing module \"x\" failed.", NULL,
+            "Extension instance \"a:e\" missing argument element \"name\".", NULL);
+
+    mod_test_yin = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"x\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:x=\"urn:x\"\n"
+            "        xmlns:a=\"urn:a\">\n"
+            "  <namespace uri=\"urn:x\"/>\n"
+            "  <prefix value=\"x\"/>\n"
+            "  <import module=\"a\">\n"
+            "    <prefix value=\"a\"/>\n"
+            "  </import>\n\n"
+            "  <a:e>\n"
+            "    <x:name>xxx</x:name>\n"
+            "  </a:e>\n"
+            "</module>\n";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, mod_test_yin, LYS_IN_YIN, NULL));
+    CHECK_LOG_CTX("Parsing module \"x\" failed.", NULL,
+            "Extension instance \"a:e\" element and its argument element \"name\" are expected in the same namespace, but they differ.",
+            NULL);
+
+    mod_test_yin = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"x\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:x=\"urn:x\"\n"
+            "        xmlns:a=\"urn:a\">\n"
+            "  <namespace uri=\"urn:x\"/>\n"
+            "  <prefix value=\"x\"/>\n"
+            "  <import module=\"a\">\n"
+            "    <prefix value=\"a\"/>\n"
+            "  </import>\n\n"
+            "  <a:e>\n"
+            "    <a:value>xxx</a:value>\n"
+            "  </a:e>\n"
+            "</module>\n";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, mod_test_yin, LYS_IN_YIN, NULL));
+    CHECK_LOG_CTX("Parsing module \"x\" failed.", NULL,
+            "Extension instance \"a:e\" expects argument element \"name\" as its first XML child, but \"value\" element found.",
+            NULL);
+
+}
+
+static void
+test_extension_compile(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_ctx cctx = {0};
+    struct lysp_ext_instance ext_p = {0};
+    struct lysp_ext_substmt *substmtp;
+    struct lysp_stmt child = {0};
+    struct lysc_ext_instance ext_c = {0};
+    struct lysc_ext_substmt *substmt;
+    LY_ERR rc = LY_SUCCESS;
+
+    /* current module, whatever */
+    mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "yang");
+    assert_true(mod);
+
+    /* compile context */
+    cctx.ctx = UTEST_LYCTX;
+    cctx.cur_mod = mod;
+    cctx.pmod = mod->parsed;
+    cctx.path_len = 1;
+    cctx.path[0] = '/';
+
+    /* parsed ext instance */
+    lydict_insert(UTEST_LYCTX, "pref:my-ext", 0, &ext_p.name);
+    ext_p.format = LY_VALUE_JSON;
+    ext_p.parent_stmt = LY_STMT_MODULE;
+
+    LY_ARRAY_NEW_GOTO(UTEST_LYCTX, ext_p.substmts, substmtp, rc, cleanup);
+
+    substmtp->stmt = LY_STMT_ERROR_MESSAGE;
+    substmtp->storage = &ext_p.parsed;
+    /* fake parse */
+    lydict_insert(UTEST_LYCTX, "my error", 0, (const char **)&ext_p.parsed);
+
+    /* compiled ext instance */
+    ext_c.parent_stmt = ext_p.parent_stmt;
+    LY_ARRAY_NEW_GOTO(UTEST_LYCTX, ext_c.substmts, substmt, rc, cleanup);
+
+    substmt->stmt = LY_STMT_ERROR_MESSAGE;
+    substmt->storage = &ext_c.compiled;
+
+    /*
+     * error-message
+     */
+    ext_p.child = &child;
+    lydict_insert(UTEST_LYCTX, "error-message", 0, &child.stmt);
+    lydict_insert(UTEST_LYCTX, "my error", 0, &child.arg);
+    child.format = LY_VALUE_JSON;
+    child.kw = LY_STMT_ERROR_MESSAGE;
+
+    /* compile */
+    assert_int_equal(LY_SUCCESS, lyplg_ext_compile_extension_instance(&cctx, &ext_p, &ext_c));
+
+    /* check */
+    assert_string_equal(ext_c.compiled, "my error");
+
+cleanup:
+    lydict_remove(UTEST_LYCTX, ext_p.name);
+    lydict_remove(UTEST_LYCTX, child.stmt);
+    lydict_remove(UTEST_LYCTX, child.arg);
+    LY_ARRAY_FREE(ext_p.substmts);
+    lydict_remove(UTEST_LYCTX, ext_p.parsed);
+    LY_ARRAY_FREE(ext_c.substmts);
+    lydict_remove(UTEST_LYCTX, ext_c.compiled);
+    if (rc) {
+        fail();
+    }
+}
+
+static void
+test_ext_recursive(void **state)
+{
+    const char *mod_base_yang, *mod_imp_yang, *mod_base_yin, *mod_imp_yin;
+
+    mod_imp_yang = "module b {\n"
+            "  namespace \"urn:b\";\n"
+            "  prefix b;\n\n"
+            "  extension use-in {\n"
+            "    argument name {\n"
+            "      b:arg-type {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "    b:use-in \"extension\";\n"
+            "    b:occurence \"*\";\n"
+            "  }\n"
+            "\n"
+            "  extension substatement {\n"
+            "    argument name {\n"
+            "      b:arg-type {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "    b:use-in \"extension\";\n"
+            "    b:occurence \"*\";\n"
+            "    b:substatement \"b:occurence\";\n"
+            "  }\n"
+            "\n"
+            "  extension arg-type {\n"
+            "    b:use-in \"argument\";\n"
+            "    b:substatement \"type\" {\n"
+            "      b:occurence \"1\";\n"
+            "    }\n"
+            "    b:substatement \"default\";\n"
+            "  }\n"
+            "\n"
+            "  extension occurence {\n"
+            "    argument value {\n"
+            "      b:arg-type {\n"
+            "        type enumeration {\n"
+            "          enum \"?\";\n"
+            "          enum \"*\";\n"
+            "          enum \"+\";\n"
+            "          enum \"1\";\n"
+            "        }\n"
+            "      }\n"
+            "    }\n"
+            "    b:use-in \"extension\";\n"
+            "  }\n"
+            "}\n";
+
+    mod_imp_yin = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"b\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:b=\"urn:b\"\n"
+            "        xmlns:a=\"urn:a\">\n"
+            "  <namespace uri=\"urn:b\"/>\n"
+            "  <prefix value=\"b\"/>\n"
+            "  <import module=\"a\">\n"
+            "    <prefix value=\"a\"/>\n"
+            "  </import>\n\n"
+            "  <a:e name=\"xxx\"/>\n"
+            "</module>\n";
+
+    mod_base_yang = "module a {\n"
+            "  namespace \"urn:a\";\n"
+            "  prefix a;\n\n"
+            "  import b {\n"
+            "    prefix b;\n"
+            "  }\n"
+            "\n"
+            "  extension abstract {\n"
+            "    b:use-in \"identity\";\n"
+            "  }\n"
+            "\n"
+            "  identity mount-id;\n"
+            "\n"
+            "  identity yang-lib-id {\n"
+            "    base mount-id;\n"
+            "    a:abstract;\n"
+            "  }\n"
+            "}\n";
+
+    mod_base_yin = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"a\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:a=\"urn:a\">\n"
+            "  <namespace uri=\"urn:a\"/>\n"
+            "  <prefix value=\"a\"/>\n\n"
+            "  <extension name=\"e\">\n"
+            "    <argument name=\"name\"/>\n"
+            "  </extension>\n\n"
+            "  <a:e name=\"aaa\"/>\n"
+            "</module>\n";
+
+    /* from YANG */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, (void *)mod_imp_yang);
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, mod_base_yang, LYS_IN_YANG, NULL));
+
+    /* context reset */
+    ly_ctx_destroy(UTEST_LYCTX);
+    ly_ctx_new(NULL, 0, &UTEST_LYCTX);
+
+    /* from YIN */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, (void *)mod_imp_yin);
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, mod_base_yin, LYS_IN_YIN, NULL));
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_getnext),
+        UTEST(test_date),
+        UTEST(test_revisions),
+        UTEST(test_collision_typedef),
+        UTEST(test_collision_grouping),
+        UTEST(test_collision_identity),
+        UTEST(test_collision_feature),
+        UTEST(test_accessible_tree),
+        UTEST(test_includes),
+        UTEST(test_key_order),
+        UTEST(test_disabled_enum),
+        UTEST(test_identity),
+        UTEST(test_feature),
+        UTEST(test_extension_argument),
+        UTEST(test_extension_argument_element),
+        UTEST(test_extension_compile),
+        UTEST(test_ext_recursive),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/schema/test_tree_schema_compile.c b/tests/utests/schema/test_tree_schema_compile.c
new file mode 100644
index 0000000..d6f0538
--- /dev/null
+++ b/tests/utests/schema/test_tree_schema_compile.c
@@ -0,0 +1,3837 @@
+/*
+ * @file test_tree_schema_compile.c
+ * @author: Radek Krejci <rkrejci@cesnet.cz>
+ * @brief unit tests for functions from parser_yang.c
+ *
+ * Copyright (c) 2018 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include "common.h"
+#include "in.h"
+#include "parser_internal.h"
+#include "path.h"
+#include "plugins_types.h"
+#include "schema_compile.h"
+#include "xpath.h"
+
+static int
+setup(void **state)
+{
+    UTEST_SETUP;
+
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_options(UTEST_LYCTX, LY_CTX_DISABLE_SEARCHDIRS));
+
+    return 0;
+}
+
+static void
+test_imp_free_data(void *model_data, void *UNUSED(user_data))
+{
+    free(model_data);
+}
+
+static LY_ERR
+test_imp_clb(const char *mod_name, const char *UNUSED(mod_rev), const char *UNUSED(submod_name),
+        const char *UNUSED(sub_rev), void *user_data, LYS_INFORMAT *format,
+        const char **module_data, void (**free_module_data)(void *model_data, void *user_data))
+{
+    char *nl;
+
+    if ((nl = strchr(user_data, '\n'))) {
+        /* more modules */
+        if (!strncmp((char *)user_data + 7, mod_name, strlen(mod_name))) {
+            *module_data = strndup(user_data, nl - (char *)user_data);
+            *format = LYS_IN_YANG;
+            *free_module_data = test_imp_free_data;
+        } else {
+            *module_data = strdup(nl + 1);
+            *format = LYS_IN_YANG;
+            *free_module_data = test_imp_free_data;
+        }
+    } else {
+        *module_data = user_data;
+        *format = LYS_IN_YANG;
+        *free_module_data = NULL;
+    }
+    return LY_SUCCESS;
+}
+
+static void
+test_module(void **state)
+{
+    const char *str, *feats[] = {"invalid", NULL};
+    struct ly_in *in;
+    struct lys_module *mod = NULL;
+    struct lysp_feature *f;
+    struct lysc_iffeature *iff;
+    struct lys_glob_unres unres = {0};
+
+    str = "module test {namespace urn:test; prefix t;"
+            "feature f1;feature f2 {if-feature f1;}}";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_SUCCESS, lys_parse_in(UTEST_LYCTX, in, LYS_IN_YANG, NULL, NULL, &unres.creating, &mod));
+    lys_unres_glob_erase(&unres);
+    ly_in_free(in, 0);
+    assert_int_equal(0, mod->implemented);
+    assert_int_equal(LY_EINVAL, lys_set_implemented(mod, feats));
+    assert_int_equal(LY_SUCCESS, lys_set_implemented(mod, NULL));
+    assert_non_null(mod->compiled);
+    assert_string_equal("test", mod->name);
+    assert_string_equal("urn:test", mod->ns);
+    assert_string_equal("t", mod->prefix);
+    /* features */
+    assert_non_null(mod->parsed->features);
+    assert_int_equal(2, LY_ARRAY_COUNT(mod->parsed->features));
+    f = &mod->parsed->features[1];
+    assert_non_null(f->iffeatures);
+    assert_int_equal(1, LY_ARRAY_COUNT(f->iffeatures));
+    iff = &f->iffeatures_c[0];
+    assert_non_null(iff->expr);
+    assert_non_null(iff->features);
+    assert_int_equal(1, LY_ARRAY_COUNT(iff->features));
+    assert_ptr_equal(&mod->parsed->features[0], iff->features[0]);
+
+    /* submodules cannot be compiled directly */
+    str = "submodule test {belongs-to xxx {prefix x;}}";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_EINVAL, lys_parse_in(UTEST_LYCTX, in, LYS_IN_YANG, NULL, NULL, &unres.creating, NULL));
+    lys_unres_glob_erase(&unres);
+    ly_in_free(in, 0);
+    CHECK_LOG_CTX("Input data contains submodule which cannot be parsed directly without its main module.", NULL);
+
+    /* data definition name collision in top level */
+    str = "module aa {namespace urn:aa;prefix aa; leaf a {type string;} container a{presence x;}}";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(str, &in));
+    assert_int_equal(LY_EEXIST, lys_parse(UTEST_LYCTX, in, LYS_IN_YANG, NULL, &mod));
+    ly_in_free(in, 0);
+    CHECK_LOG_CTX("Duplicate identifier \"a\" of data definition/RPC/action/notification statement.", "/aa:a");
+}
+
+static void
+test_name_collisions(void **state)
+{
+    const char *yang_data;
+
+    /* top-level */
+    yang_data = "module a {namespace urn:a;prefix a;"
+            "  container c;"
+            "  leaf a {type empty;}"
+            "  leaf c {type empty;}"
+            "}";
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, yang_data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"c\" of data definition/RPC/action/notification statement.", "/a:c");
+    UTEST_LOG_CLEAN;
+
+    yang_data = "module a {namespace urn:a;prefix a;"
+            "  container c;"
+            "  leaf a {type empty;}"
+            "  notification c;"
+            "}";
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, yang_data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"c\" of data definition/RPC/action/notification statement.", "/a:c");
+    UTEST_LOG_CLEAN;
+
+    yang_data = "module a {namespace urn:a;prefix a;"
+            "  container c;"
+            "  leaf a {type empty;}"
+            "  rpc c;"
+            "}";
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, yang_data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"c\" of data definition/RPC/action/notification statement.", "/a:c");
+    UTEST_LOG_CLEAN;
+
+    yang_data = "module a {namespace urn:a;prefix a;"
+            "  container c;"
+            "  leaf a {type empty;}"
+            "  choice ch {"
+            "    leaf c {type string;}"
+            "    case c2 {"
+            "      leaf aa {type empty;}"
+            "    }"
+            "  }"
+            "}";
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, yang_data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"c\" of data definition/RPC/action/notification statement.", "/a:ch/c/c");
+    UTEST_LOG_CLEAN;
+
+    /* nested */
+    yang_data = "module a {namespace urn:a;prefix a;container c { list l {key \"k\"; leaf k {type string;}"
+            "leaf-list a {type string;}"
+            "container a;"
+            "}}}";
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, yang_data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"a\" of data definition/RPC/action/notification statement.", "/a:c/l/a");
+    UTEST_LOG_CLEAN;
+
+    yang_data = "module a {yang-version 1.1;namespace urn:a;prefix a;container c { list l {key \"k\"; leaf k {type string;}"
+            "leaf-list a {type string;}"
+            "notification a;"
+            "}}}";
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, yang_data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"a\" of data definition/RPC/action/notification statement.", "/a:c/l/a");
+    UTEST_LOG_CLEAN;
+
+    yang_data = "module a {yang-version 1.1;namespace urn:a;prefix a;container c { list l {key \"k\"; leaf k {type string;}"
+            "leaf-list a {type string;}"
+            "action a;"
+            "}}}";
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, yang_data, LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"a\" of data definition/RPC/action/notification statement.", "/a:c/l/a");
+    UTEST_LOG_CLEAN;
+
+    /* grouping */
+}
+
+static void
+test_node_container(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_node_container *cont;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a;container c;}", LYS_IN_YANG, &mod));
+    assert_non_null(mod->compiled);
+    assert_non_null((cont = (struct lysc_node_container *)mod->compiled->data));
+    assert_int_equal(LYS_CONTAINER, cont->nodetype);
+    assert_string_equal("c", cont->name);
+    assert_true(cont->flags & LYS_CONFIG_W);
+    assert_true(cont->flags & LYS_STATUS_CURR);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b;container c {config false; status deprecated; container child;}}", LYS_IN_YANG, &mod));
+    assert_non_null(mod->compiled);
+    assert_non_null((cont = (struct lysc_node_container *)mod->compiled->data));
+    assert_true(cont->flags & LYS_CONFIG_R);
+    assert_true(cont->flags & LYS_STATUS_DEPRC);
+    assert_non_null((cont = (struct lysc_node_container *)cont->child));
+    assert_int_equal(LYS_CONTAINER, cont->nodetype);
+    assert_true(cont->flags & LYS_CONFIG_R);
+    assert_true(cont->flags & LYS_STATUS_DEPRC);
+    assert_string_equal("child", cont->name);
+}
+
+static void
+test_node_leaflist(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_type *type;
+    struct lysc_node_leaflist *ll;
+    struct lysc_node_leaf *l;
+    const char *dflt;
+    uint8_t dynamic;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a;"
+            "typedef mytype {type union {type leafref {path ../target;} type string;}}"
+            "leaf-list ll1 {type union {type decimal64 {fraction-digits 2;} type mytype;}}"
+            "leaf-list ll2 {type leafref {path ../target;}}"
+            "leaf target {type int8;}}",
+            LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_int_equal(LY_TYPE_UNION, type->basetype);
+    assert_non_null(((struct lysc_type_union *)type)->types);
+    assert_int_equal(3, LY_ARRAY_COUNT(((struct lysc_type_union *)type)->types));
+    assert_int_equal(LY_TYPE_DEC64, ((struct lysc_type_union *)type)->types[0]->basetype);
+    assert_int_equal(LY_TYPE_LEAFREF, ((struct lysc_type_union *)type)->types[1]->basetype);
+    assert_int_equal(LY_TYPE_STRING, ((struct lysc_type_union *)type)->types[2]->basetype);
+    assert_non_null(((struct lysc_type_leafref *)((struct lysc_type_union *)type)->types[1])->realtype);
+    assert_int_equal(LY_TYPE_INT8, ((struct lysc_type_leafref *)((struct lysc_type_union *)type)->types[1])->realtype->basetype);
+    type = ((struct lysc_node_leaf *)mod->compiled->data->next)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_int_equal(LY_TYPE_LEAFREF, type->basetype);
+    assert_non_null(((struct lysc_type_leafref *)type)->realtype);
+    assert_int_equal(LY_TYPE_INT8, ((struct lysc_type_leafref *)type)->realtype->basetype);
+
+    /* now test for string type is in file ./tests/utests/types/string.c */
+#if 0
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b;leaf-list ll {type string;}}", LYS_IN_YANG, &mod));
+    assert_non_null(mod->compiled);
+    assert_non_null((ll = (struct lysc_node_leaflist *)mod->compiled->data));
+    assert_int_equal(0, ll->min);
+    assert_int_equal((uint32_t)-1, ll->max);
+#endif
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {yang-version 1.1;namespace urn:c;prefix c;typedef mytype {type int8;default 10;}"
+            "leaf-list ll1 {type mytype;default 1; default 1; config false;}"
+            "leaf-list ll2 {type mytype; ordered-by user;}}", LYS_IN_YANG, &mod));
+    assert_non_null(mod->compiled);
+    assert_non_null((ll = (struct lysc_node_leaflist *)mod->compiled->data));
+    assert_non_null(ll->dflts);
+    assert_int_equal(6, ll->type->refcount); /* 3x type's reference, 3x default value's reference (typedef's default does not reference own type) */
+    assert_int_equal(2, LY_ARRAY_COUNT(ll->dflts));
+    assert_string_equal("1", dflt = ll->dflts[0]->realtype->plugin->print(UTEST_LYCTX, ll->dflts[0], LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_string_equal("1", dflt = ll->dflts[1]->realtype->plugin->print(UTEST_LYCTX, ll->dflts[1], LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_int_equal(LYS_CONFIG_R | LYS_STATUS_CURR | LYS_ORDBY_USER | LYS_SET_DFLT | LYS_SET_CONFIG, ll->flags);
+    assert_non_null((ll = (struct lysc_node_leaflist *)mod->compiled->data->next));
+    assert_non_null(ll->dflts);
+    assert_int_equal(6, ll->type->refcount); /* 3x type's reference, 3x default value's reference */
+    assert_int_equal(1, LY_ARRAY_COUNT(ll->dflts));
+    assert_string_equal("10", dflt = ll->dflts[0]->realtype->plugin->print(UTEST_LYCTX, ll->dflts[0], LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_int_equal(LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_USER, ll->flags);
+
+    /* ordered-by is ignored (with verbose message) for state data, RPC/action output parameters and notification content */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module d {yang-version 1.1;namespace urn:d;prefix d;"
+            "leaf-list ll {config false; type string; ordered-by user;}}", LYS_IN_YANG, &mod));
+    assert_non_null(mod->compiled);
+    assert_non_null((ll = (struct lysc_node_leaflist *)mod->compiled->data));
+    assert_int_equal(LYS_CONFIG_R | LYS_STATUS_CURR | LYS_ORDBY_USER | LYS_SET_CONFIG, ll->flags);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module e {yang-version 1.1;namespace urn:e;prefix e;"
+            "rpc oper {output {leaf-list ll {type string; ordered-by user;}}}}", LYS_IN_YANG, &mod));
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module f {yang-version 1.1;namespace urn:f;prefix f;"
+            "notification event {leaf-list ll {type string; ordered-by user;}}}", LYS_IN_YANG, &mod));
+
+    /* forward reference in default */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module g {yang-version 1.1; namespace urn:g;prefix g;"
+            "leaf ref {type instance-identifier {require-instance true;} default \"/g:g[.='val']\";}"
+            "leaf-list g {type string;}}", LYS_IN_YANG, &mod));
+    assert_non_null(l = (struct lysc_node_leaf *)mod->compiled->data);
+    assert_string_equal("ref", l->name);
+    assert_non_null(l->dflt);
+
+    /* invalid */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;leaf-list ll {type empty;}}",
+            LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Leaf-list of type \"empty\" is allowed only in YANG 1.1 modules.", "/aa:ll");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module bb {yang-version 1.1;namespace urn:bb;prefix bb;leaf-list ll {type empty; default x;}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Invalid empty value length 1.).", "Schema location \"/bb:ll\".");
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module cc {yang-version 1.1;namespace urn:cc;prefix cc;"
+            "leaf-list ll {config false;type string; default one;default two;default one;}}", LYS_IN_YANG, &mod));
+    assert_non_null(mod->compiled);
+    assert_non_null((ll = (struct lysc_node_leaflist *)mod->compiled->data));
+    assert_non_null(ll->dflts);
+    assert_int_equal(3, LY_ARRAY_COUNT(ll->dflts));
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module dd {yang-version 1.1;namespace urn:dd;prefix dd;"
+            "leaf-list ll {type string; default one;default two;default one;}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Configuration leaf-list has multiple defaults of the same value \"one\".", "/dd:ll");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ee {yang-version 1.1; namespace urn:ee;prefix ee;"
+            "leaf ref {type instance-identifier {require-instance true;} default \"/ee:g\";}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid default - value does not fit the type "
+            "(Invalid instance-identifier \"/ee:g\" value - semantic error.).", "Schema location \"/ee:ref\".");
+}
+
+static void
+test_node_list(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_node_list *list;
+    struct lysc_node *child;
+    struct ly_in *in;
+    const char *data =
+            "module a {namespace urn:a;prefix a;feature f;"
+            "list l1 {key \"x y\"; ordered-by user; leaf y{type string;if-feature f;} leaf x {type string; when 1;}}"
+            "list l2 {config false;leaf value {type string;}}}";
+    const char *feats[] = {"f", NULL};
+
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lys_parse(UTEST_LYCTX, in, LYS_IN_YANG, feats, &mod));
+    ly_in_free(in, 0);
+    list = (struct lysc_node_list *)mod->compiled->data;
+    assert_non_null(list);
+    assert_non_null(list->child);
+    assert_string_equal("x", list->child->name);
+    assert_true(list->child->flags & LYS_KEY);
+    assert_string_equal("y", list->child->next->name);
+    assert_true(list->child->next->flags & LYS_KEY);
+    assert_non_null(list->child);
+    assert_int_equal(LYS_CONFIG_W | LYS_STATUS_CURR | LYS_ORDBY_USER, list->flags);
+    assert_true(list->child->flags & LYS_KEY);
+    assert_true(list->child->next->flags & LYS_KEY);
+    list = (struct lysc_node_list *)mod->compiled->data->next;
+    assert_non_null(list);
+    assert_non_null(list->child);
+    assert_false(list->child->flags & LYS_KEY);
+    assert_int_equal(LYS_CONFIG_R | LYS_STATUS_CURR | LYS_ORDBY_USER | LYS_SET_CONFIG | LYS_KEYLESS, list->flags);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b;"
+            "list l {key a; unique \"a c/b:b\"; unique \"c/e d\";"
+            "leaf a {type string; default x;} leaf d {type string;config false;}"
+            "container c {leaf b {type string;}leaf e{type string;config false;}}}}",
+            LYS_IN_YANG, &mod));
+    list = (struct lysc_node_list *)mod->compiled->data;
+    assert_non_null(list);
+    assert_string_equal("l", list->name);
+    assert_string_equal("a", list->child->name);
+    assert_true(list->child->flags & LYS_KEY);
+    assert_null(((struct lysc_node_leaf *)list->child)->dflt);
+    assert_non_null(list->uniques);
+    assert_int_equal(2, LY_ARRAY_COUNT(list->uniques));
+    assert_int_equal(2, LY_ARRAY_COUNT(list->uniques[0]));
+    assert_string_equal("a", list->uniques[0][0]->name);
+    assert_true(list->uniques[0][0]->flags & LYS_UNIQUE);
+    assert_string_equal("b", list->uniques[0][1]->name);
+    assert_true(list->uniques[0][1]->flags & LYS_UNIQUE);
+    assert_int_equal(2, LY_ARRAY_COUNT(list->uniques[1]));
+    assert_string_equal("e", list->uniques[1][0]->name);
+    assert_true(list->uniques[1][0]->flags & LYS_UNIQUE);
+    assert_string_equal("d", list->uniques[1][1]->name);
+    assert_true(list->uniques[1][1]->flags & LYS_UNIQUE);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {yang-version 1.1;namespace urn:c;prefix c;"
+            "list l {key a;leaf a {type empty;}}}", LYS_IN_YANG, &mod));
+    list = (struct lysc_node_list *)mod->compiled->data;
+    assert_non_null(list);
+    assert_string_equal("l", list->name);
+    assert_string_equal("a", list->child->name);
+    assert_true(list->child->flags & LYS_KEY);
+    assert_int_equal(LY_TYPE_EMPTY, ((struct lysc_node_leaf *)list->child)->type->basetype);
+
+    /* keys order */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module d {yang-version 1.1;namespace urn:d;prefix d;"
+            "list l {key \"d b c\";leaf a {type string;} leaf b {type string;} leaf c {type string;} leaf d {type string;}}}", LYS_IN_YANG, &mod));
+    list = (struct lysc_node_list *)mod->compiled->data;
+    assert_non_null(list);
+    assert_string_equal("l", list->name);
+    assert_non_null(child = list->child);
+    assert_string_equal("d", child->name);
+    assert_true(child->flags & LYS_KEY);
+    assert_non_null(child = child->next);
+    assert_string_equal("b", child->name);
+    assert_true(child->flags & LYS_KEY);
+    assert_non_null(child = child->next);
+    assert_string_equal("c", child->name);
+    assert_true(child->flags & LYS_KEY);
+    assert_non_null(child = child->next);
+    assert_string_equal("a", child->name);
+    assert_false(child->flags & LYS_KEY);
+
+    /* invalid */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;list l;}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Missing key in list representing configuration data.", "/aa:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module bb {yang-version 1.1; namespace urn:bb;prefix bb;"
+            "list l {key x; leaf x {type string; when 1;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("List's key must not have any \"when\" statement.", "/bb:l/x");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module cc {yang-version 1.1;namespace urn:cc;prefix cc;feature f;"
+            "list l {key x; leaf x {type string; if-feature f;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Key \"x\" is disabled.", "Schema location \"/cc:l/x\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module dd {namespace urn:dd;prefix dd;"
+            "list l {key x; leaf x {type string; config false;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Key of a configuration list must not be a state leaf.", "/dd:l/x");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ee {namespace urn:ee;prefix ee;"
+            "list l {config false;key x; leaf x {type string; config true;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Configuration node cannot be child of any state data node.", "/ee:l/x");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff {namespace urn:ff;prefix ff;"
+            "list l {key x; leaf-list x {type string;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("The list's key \"x\" not found.", "/ff:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg {namespace urn:gg;prefix gg;"
+            "list l {key x; unique y;leaf x {type string;} leaf-list y {type string;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Unique's descendant-schema-nodeid \"y\" refers to leaf-list node instead of a leaf.", "/gg:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module hh {namespace urn:hh;prefix hh;"
+            "list l {key x; unique \"x y\";leaf x {type string;} leaf y {config false; type string;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Unique statement \"x y\" refers to leaves with different config type.", "/hh:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ii {namespace urn:ii;prefix ii;"
+            "list l {key x; unique a:x;leaf x {type string;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid descendant-schema-nodeid value \"a:x\" - prefix \"a\" not defined in module \"ii\".", "/ii:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module jj {namespace urn:jj;prefix jj;"
+            "list l {key x; unique c/x;leaf x {type string;}container c {leaf y {type string;}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid descendant-schema-nodeid value \"c/x\" - target node not found.", "/jj:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module kk {namespace urn:kk;prefix kk;"
+            "list l {key x; unique c^y;leaf x {type string;}container c {leaf y {type string;}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid descendant-schema-nodeid value \"c^\" - missing \"/\" as node-identifier separator.", "/kk:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ll {namespace urn:ll;prefix ll;"
+            "list l {key \"x y x\";leaf x {type string;}leaf y {type string;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicated key identifier \"x\".", "/ll:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm {namespace urn:mm;prefix mm;"
+            "list l {key x;leaf x {type empty;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("List's key cannot be of \"empty\" type until it is in YANG 1.1 module.", "/mm:l/x");
+}
+
+static void
+test_node_choice(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_node_choice *ch;
+    struct lysc_node_case *cs;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a;feature f;"
+            "choice ch {default a:b; when \"true()\"; case a {leaf a1 {type string;}leaf a2 {type string;}}"
+            "leaf b {type string;}}}", LYS_IN_YANG, &mod));
+    ch = (struct lysc_node_choice *)mod->compiled->data;
+    assert_non_null(ch);
+    assert_int_equal(LYS_CONFIG_W | LYS_STATUS_CURR, ch->flags);
+    assert_int_equal(1, LY_ARRAY_COUNT(ch->when));
+    assert_null(ch->when[0]->context);
+    cs = ch->cases;
+    assert_non_null(cs);
+    assert_string_equal("a", cs->name);
+    assert_ptr_equal(ch, cs->parent);
+    assert_non_null(cs->child);
+    assert_string_equal("a1", cs->child->name);
+    assert_non_null(cs->child->next);
+    assert_string_equal("a2", cs->child->next->name);
+    assert_ptr_equal(cs, cs->child->parent);
+    cs = (struct lysc_node_case *)cs->next;
+    assert_non_null(cs);
+    assert_string_equal("b", cs->name);
+    assert_int_equal(LYS_STATUS_CURR | LYS_SET_DFLT | LYS_CONFIG_W, cs->flags);
+    assert_ptr_equal(ch, cs->parent);
+    assert_non_null(cs->child);
+    assert_string_equal("b", cs->child->name);
+    assert_ptr_equal(cs, cs->child->parent);
+    assert_ptr_equal(ch->dflt, cs);
+
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;"
+            "choice ch {case a {leaf x {type string;}}leaf x {type string;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"x\" of data definition/RPC/action/notification statement.", "/aa:ch/x/x");
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module aa2 {namespace urn:aa2;prefix aa;"
+            "choice ch {case a {leaf y {type string;}}case b {leaf y {type string;}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"y\" of data definition/RPC/action/notification statement.", "/aa2:ch/b/y");
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb;"
+            "choice ch {case a {leaf x {type string;}}leaf a {type string;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"a\" of case statement.", "/bb:ch/a");
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module bb2 {namespace urn:bb2;prefix bb;"
+            "choice ch {case b {leaf x {type string;}}case b {leaf y {type string;}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"b\" of case statement.", "/bb2:ch/b");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ca {namespace urn:ca;prefix ca;"
+            "choice ch {default c;case a {leaf x {type string;}}case b {leaf y {type string;}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Default case \"c\" not found.", "/ca:ch");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module cb {namespace urn:cb;prefix cb; import a {prefix a;}"
+            "choice ch {default a:a;case a {leaf x {type string;}}case b {leaf y {type string;}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Default case \"a:a\" not found.", "/cb:ch");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module cc {namespace urn:cc;prefix cc;"
+            "choice ch {default a;case a {leaf x {mandatory true;type string;}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Mandatory node \"x\" under the default case \"a\".", "/cc:ch");
+    /* TODO check with mandatory nodes from augment placed into the case */
+}
+
+static void
+test_node_anydata(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_node_anydata *any;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {yang-version 1.1;namespace urn:a;prefix a;"
+            "anydata any {config false;mandatory true;}}", LYS_IN_YANG, &mod));
+    any = (struct lysc_node_anydata *)mod->compiled->data;
+    assert_non_null(any);
+    assert_int_equal(LYS_ANYDATA, any->nodetype);
+    assert_int_equal(LYS_CONFIG_R | LYS_STATUS_CURR | LYS_MAND_TRUE | LYS_SET_CONFIG, any->flags);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b;"
+            "anyxml any;}", LYS_IN_YANG, &mod));
+    any = (struct lysc_node_anydata *)mod->compiled->data;
+    assert_non_null(any);
+    assert_int_equal(LYS_ANYXML, any->nodetype);
+    assert_int_equal(LYS_CONFIG_W | LYS_STATUS_CURR, any->flags);
+
+    /* invalid */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;anydata any;}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Invalid keyword \"anydata\" as a child of \"module\" - the statement is allowed only in YANG 1.1 modules.", "Line number 1.");
+}
+
+static void
+test_action(void **state)
+{
+    struct lys_module *mod;
+    const struct lysc_node_action *rpc;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a;"
+            "rpc a {input {leaf x {type int8;} leaf y {type int8;}} output {leaf result {type int16;}}}}", LYS_IN_YANG, &mod));
+    rpc = mod->compiled->rpcs;
+    assert_non_null(rpc);
+    assert_null(rpc->next);
+    assert_int_equal(LYS_RPC, rpc->nodetype);
+    assert_int_equal(LYS_STATUS_CURR, rpc->flags);
+    assert_string_equal("a", rpc->name);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {yang-version 1.1; namespace urn:b;prefix b; container top {"
+            "action b {input {leaf x {type int8;} leaf y {type int8;}}"
+            "output {must \"result > 25\"; must \"/top\"; leaf result {type int16;}}}}"
+            "augment /top/b/output {leaf result2 {type string;}}}", LYS_IN_YANG, &mod));
+    rpc = lysc_node_actions(mod->compiled->data);
+    assert_non_null(rpc);
+    assert_null(rpc->next);
+    assert_int_equal(LYS_ACTION, rpc->nodetype);
+    assert_int_equal(LYS_STATUS_CURR, rpc->flags);
+    assert_string_equal("b", rpc->name);
+    assert_null(rpc->input.musts);
+    assert_int_equal(2, LY_ARRAY_COUNT(rpc->output.musts));
+
+    /* invalid */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;container top {action x;}}",
+            LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Invalid keyword \"action\" as a child of \"container\" - the statement is allowed only in YANG 1.1 modules.", "Line number 1.");
+
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb;leaf x{type string;} rpc x;}",
+            LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"x\" of data definition/RPC/action/notification statement.", "/bb:x");
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module cc {yang-version 1.1; namespace urn:cc;prefix cc;container c {leaf y {type string;} action y;}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"y\" of data definition/RPC/action/notification statement.", "/cc:c/y");
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module dd {yang-version 1.1; namespace urn:dd;prefix dd;container c {action z; action z;}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"z\" of data definition/RPC/action/notification statement.", "/dd:c/z");
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule eesub {belongs-to ee {prefix ee;} notification w;}");
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module ee {yang-version 1.1; namespace urn:ee;prefix ee;include eesub; rpc w;}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"w\" of data definition/RPC/action/notification statement.", "/ee:w");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff {yang-version 1.1; namespace urn:ff;prefix ff; rpc test {input {container a {leaf b {type string;}}}}"
+            "augment /test/input/a {action invalid {input {leaf x {type string;}}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Action \"invalid\" is placed inside another RPC/action.", "/ff:{augment='/test/input/a'}/invalid");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg {yang-version 1.1; namespace urn:gg;prefix gg; notification test {container a {leaf b {type string;}}}"
+            "augment /test/a {action invalid {input {leaf x {type string;}}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Action \"invalid\" is placed inside notification.", "/gg:{augment='/test/a'}/invalid");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module hh {yang-version 1.1; namespace urn:hh;prefix hh; notification test {container a {uses grp;}}"
+            "grouping grp {action invalid {input {leaf x {type string;}}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Action \"invalid\" is placed inside notification.", "/hh:test/a/{uses='grp'}/invalid");
+}
+
+static void
+test_notification(void **state)
+{
+    struct lys_module *mod;
+    const struct lysc_node_notif *notif;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a;"
+            "notification a1 {leaf x {type int8;}} notification a2;}", LYS_IN_YANG, &mod));
+    notif = mod->compiled->notifs;
+    assert_non_null(notif);
+    assert_non_null(notif->next);
+    assert_null(notif->next->next);
+    assert_int_equal(LYS_NOTIF, notif->nodetype);
+    assert_int_equal(LYS_STATUS_CURR, notif->flags);
+    assert_string_equal("a1", notif->name);
+    assert_non_null(notif->child);
+    assert_string_equal("x", notif->child->name);
+    notif = notif->next;
+    assert_int_equal(LYS_NOTIF, notif->nodetype);
+    assert_int_equal(LYS_STATUS_CURR, notif->flags);
+    assert_string_equal("a2", notif->name);
+    assert_null(notif->child);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {yang-version 1.1; namespace urn:b;prefix b; container top {"
+            "notification b1 {leaf x {type int8;}} notification b2 {must \"/top\";}}}", LYS_IN_YANG, &mod));
+    notif = lysc_node_notifs(mod->compiled->data);
+    assert_non_null(notif);
+    assert_non_null(notif->next);
+    assert_null(notif->next->next);
+    assert_int_equal(LYS_NOTIF, notif->nodetype);
+    assert_int_equal(LYS_STATUS_CURR, notif->flags);
+    assert_string_equal("b1", notif->name);
+    assert_non_null(notif->child);
+    assert_string_equal("x", notif->child->name);
+    notif = notif->next;
+    assert_int_equal(LYS_NOTIF, notif->nodetype);
+    assert_int_equal(LYS_STATUS_CURR, notif->flags);
+    assert_string_equal("b2", notif->name);
+    assert_null(notif->child);
+    assert_int_equal(1, LY_ARRAY_COUNT(notif->musts));
+
+    /* invalid */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;container top {notification x;}}",
+            LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Invalid keyword \"notification\" as a child of \"container\" - the statement is allowed only in YANG 1.1 modules.", "Line number 1.");
+
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb;leaf x{type string;} notification x;}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"x\" of data definition/RPC/action/notification statement.", "/bb:x");
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module cc {yang-version 1.1; namespace urn:cc;prefix cc;container c {leaf y {type string;} notification y;}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"y\" of data definition/RPC/action/notification statement.", "/cc:c/y");
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module dd {yang-version 1.1; namespace urn:dd;prefix dd;container c {notification z; notification z;}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"z\" of data definition/RPC/action/notification statement.", "/dd:c/z");
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule eesub {belongs-to ee {prefix ee;} rpc w;}");
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module ee {yang-version 1.1; namespace urn:ee;prefix ee;include eesub; notification w;}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Duplicate identifier \"w\" of data definition/RPC/action/notification statement.", "/ee:w");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff {yang-version 1.1; namespace urn:ff;prefix ff; rpc test {input {container a {leaf b {type string;}}}}"
+            "augment /test/input/a {notification invalid {leaf x {type string;}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Notification \"invalid\" is placed inside RPC/action.", "/ff:{augment='/test/input/a'}/invalid");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg {yang-version 1.1; namespace urn:gg;prefix gg; notification test {container a {leaf b {type string;}}}"
+            "augment /test/a {notification invalid {leaf x {type string;}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Notification \"invalid\" is placed inside another notification.", "/gg:{augment='/test/a'}/invalid");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module hh {yang-version 1.1; namespace urn:hh;prefix hh; rpc test {input {container a {uses grp;}}}"
+            "grouping grp {notification invalid {leaf x {type string;}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Notification \"invalid\" is placed inside RPC/action.", "/hh:test/input/a/{uses='grp'}/invalid");
+}
+
+/**
+ * actually the same as length restriction (tested in test_type_length()), so just check the correct handling in appropriate types,
+ * do not test the expression itself
+ */
+static void
+test_type_range(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_type *type;
+
+#if 0
+    /*test about int8 should be in tests/utests/types/int8.c*/
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a;leaf l {type int8 {range min..10|max;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_INT8, type->basetype);
+    assert_non_null(((struct lysc_type_num *)type)->range);
+    assert_non_null(((struct lysc_type_num *)type)->range->parts);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_num *)type)->range->parts));
+    assert_int_equal(-128, ((struct lysc_type_num *)type)->range->parts[0].min_64);
+    assert_int_equal(10, ((struct lysc_type_num *)type)->range->parts[0].max_64);
+    assert_int_equal(127, ((struct lysc_type_num *)type)->range->parts[1].min_64);
+    assert_int_equal(127, ((struct lysc_type_num *)type)->range->parts[1].max_64);
+#endif
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b;leaf l {type int16 {range min..10|max;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_INT16, type->basetype);
+    assert_non_null(((struct lysc_type_num *)type)->range);
+    assert_non_null(((struct lysc_type_num *)type)->range->parts);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_num *)type)->range->parts));
+    assert_int_equal(-32768, ((struct lysc_type_num *)type)->range->parts[0].min_64);
+    assert_int_equal(10, ((struct lysc_type_num *)type)->range->parts[0].max_64);
+    assert_int_equal(32767, ((struct lysc_type_num *)type)->range->parts[1].min_64);
+    assert_int_equal(32767, ((struct lysc_type_num *)type)->range->parts[1].max_64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {namespace urn:c;prefix c;leaf l {type int32 {range min..10|max;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_INT32, type->basetype);
+    assert_non_null(((struct lysc_type_num *)type)->range);
+    assert_non_null(((struct lysc_type_num *)type)->range->parts);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_num *)type)->range->parts));
+    assert_int_equal(INT64_C(-2147483648), ((struct lysc_type_num *)type)->range->parts[0].min_64);
+    assert_int_equal(10, ((struct lysc_type_num *)type)->range->parts[0].max_64);
+    assert_int_equal(INT64_C(2147483647), ((struct lysc_type_num *)type)->range->parts[1].min_64);
+    assert_int_equal(INT64_C(2147483647), ((struct lysc_type_num *)type)->range->parts[1].max_64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module d {namespace urn:d;prefix d;leaf l {type int64 {range min..10|max;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_INT64, type->basetype);
+    assert_non_null(((struct lysc_type_num *)type)->range);
+    assert_non_null(((struct lysc_type_num *)type)->range->parts);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_num *)type)->range->parts));
+    assert_int_equal(INT64_C(-9223372036854775807) - INT64_C(1), ((struct lysc_type_num *)type)->range->parts[0].min_64);
+    assert_int_equal(10, ((struct lysc_type_num *)type)->range->parts[0].max_64);
+    assert_int_equal(INT64_C(9223372036854775807), ((struct lysc_type_num *)type)->range->parts[1].min_64);
+    assert_int_equal(INT64_C(9223372036854775807), ((struct lysc_type_num *)type)->range->parts[1].max_64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module e {namespace urn:e;prefix e;leaf l {type uint8 {range min..10|max;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_UINT8, type->basetype);
+    assert_non_null(((struct lysc_type_num *)type)->range);
+    assert_non_null(((struct lysc_type_num *)type)->range->parts);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_num *)type)->range->parts));
+    assert_int_equal(0, ((struct lysc_type_num *)type)->range->parts[0].min_u64);
+    assert_int_equal(10, ((struct lysc_type_num *)type)->range->parts[0].max_u64);
+    assert_int_equal(255, ((struct lysc_type_num *)type)->range->parts[1].min_u64);
+    assert_int_equal(255, ((struct lysc_type_num *)type)->range->parts[1].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module f {namespace urn:f;prefix f;leaf l {type uint16 {range min..10|max;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_UINT16, type->basetype);
+    assert_non_null(((struct lysc_type_num *)type)->range);
+    assert_non_null(((struct lysc_type_num *)type)->range->parts);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_num *)type)->range->parts));
+    assert_int_equal(0, ((struct lysc_type_num *)type)->range->parts[0].min_u64);
+    assert_int_equal(10, ((struct lysc_type_num *)type)->range->parts[0].max_u64);
+    assert_int_equal(65535, ((struct lysc_type_num *)type)->range->parts[1].min_u64);
+    assert_int_equal(65535, ((struct lysc_type_num *)type)->range->parts[1].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module g {namespace urn:g;prefix g;leaf l {type uint32 {range min..10|max;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_UINT32, type->basetype);
+    assert_non_null(((struct lysc_type_num *)type)->range);
+    assert_non_null(((struct lysc_type_num *)type)->range->parts);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_num *)type)->range->parts));
+    assert_int_equal(0, ((struct lysc_type_num *)type)->range->parts[0].min_u64);
+    assert_int_equal(10, ((struct lysc_type_num *)type)->range->parts[0].max_u64);
+    assert_int_equal(UINT64_C(4294967295), ((struct lysc_type_num *)type)->range->parts[1].min_u64);
+    assert_int_equal(UINT64_C(4294967295), ((struct lysc_type_num *)type)->range->parts[1].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module h {namespace urn:h;prefix h;leaf l {type uint64 {range min..10|max;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_UINT64, type->basetype);
+    assert_non_null(((struct lysc_type_num *)type)->range);
+    assert_non_null(((struct lysc_type_num *)type)->range->parts);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_num *)type)->range->parts));
+    assert_int_equal(0, ((struct lysc_type_num *)type)->range->parts[0].min_u64);
+    assert_int_equal(10, ((struct lysc_type_num *)type)->range->parts[0].max_u64);
+    assert_int_equal(UINT64_C(18446744073709551615), ((struct lysc_type_num *)type)->range->parts[1].min_u64);
+    assert_int_equal(UINT64_C(18446744073709551615), ((struct lysc_type_num *)type)->range->parts[1].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module i {namespace urn:i;prefix i;typedef mytype {type uint8 {range 10..100;}}"
+            "typedef mytype2 {type mytype;} leaf l {type mytype2;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(3, type->refcount);
+    assert_int_equal(LY_TYPE_UINT8, type->basetype);
+    assert_non_null(((struct lysc_type_num *)type)->range);
+    assert_non_null(((struct lysc_type_num *)type)->range->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_num *)type)->range->parts));
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module j {namespace urn:j;prefix j;"
+            "typedef mytype {type uint8 {range 1..100{description \"one to hundred\";reference A;}}}"
+            "leaf l {type mytype {range 1..10 {description \"one to ten\";reference B;}}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_int_equal(LY_TYPE_UINT8, type->basetype);
+    assert_non_null(((struct lysc_type_num *)type)->range);
+    assert_string_equal("one to ten", ((struct lysc_type_num *)type)->range->dsc);
+    assert_string_equal("B", ((struct lysc_type_num *)type)->range->ref);
+    assert_non_null(((struct lysc_type_num *)type)->range->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_num *)type)->range->parts));
+    assert_int_equal(1, ((struct lysc_type_num *)type)->range->parts[0].min_u64);
+    assert_int_equal(10, ((struct lysc_type_num *)type)->range->parts[0].max_u64);
+}
+
+static void
+test_type_length(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_type *type;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a;leaf l {type binary {length min {error-app-tag errortag;error-message error;}}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_non_null(((struct lysc_type_bin *)type)->length);
+    assert_non_null(((struct lysc_type_bin *)type)->length->parts);
+    assert_string_equal("errortag", ((struct lysc_type_bin *)type)->length->eapptag);
+    assert_string_equal("error", ((struct lysc_type_bin *)type)->length->emsg);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_bin *)type)->length->parts));
+    assert_int_equal(0, ((struct lysc_type_bin *)type)->length->parts[0].min_u64);
+    assert_int_equal(0, ((struct lysc_type_bin *)type)->length->parts[0].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b;leaf l {type binary {length max;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_non_null(((struct lysc_type_bin *)type)->length);
+    assert_non_null(((struct lysc_type_bin *)type)->length->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_bin *)type)->length->parts));
+    assert_int_equal(UINT64_C(18446744073709551615), ((struct lysc_type_bin *)type)->length->parts[0].min_u64);
+    assert_int_equal(UINT64_C(18446744073709551615), ((struct lysc_type_bin *)type)->length->parts[0].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {namespace urn:c;prefix c;leaf l {type binary {length min..max;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_non_null(((struct lysc_type_bin *)type)->length);
+    assert_non_null(((struct lysc_type_bin *)type)->length->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_bin *)type)->length->parts));
+    assert_int_equal(0, ((struct lysc_type_bin *)type)->length->parts[0].min_u64);
+    assert_int_equal(UINT64_C(18446744073709551615), ((struct lysc_type_bin *)type)->length->parts[0].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module d {namespace urn:d;prefix d;leaf l {type binary {length 5;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_non_null(((struct lysc_type_bin *)type)->length);
+    assert_non_null(((struct lysc_type_bin *)type)->length->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_bin *)type)->length->parts));
+    assert_int_equal(5, ((struct lysc_type_bin *)type)->length->parts[0].min_u64);
+    assert_int_equal(5, ((struct lysc_type_bin *)type)->length->parts[0].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module e {namespace urn:e;prefix e;leaf l {type binary {length 1..10;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_non_null(((struct lysc_type_bin *)type)->length);
+    assert_non_null(((struct lysc_type_bin *)type)->length->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_bin *)type)->length->parts));
+    assert_int_equal(1, ((struct lysc_type_bin *)type)->length->parts[0].min_u64);
+    assert_int_equal(10, ((struct lysc_type_bin *)type)->length->parts[0].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module f {namespace urn:f;prefix f;leaf l {type binary {length 1..10|20..30;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_non_null(((struct lysc_type_bin *)type)->length);
+    assert_non_null(((struct lysc_type_bin *)type)->length->parts);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_bin *)type)->length->parts));
+    assert_int_equal(1, ((struct lysc_type_bin *)type)->length->parts[0].min_u64);
+    assert_int_equal(10, ((struct lysc_type_bin *)type)->length->parts[0].max_u64);
+    assert_int_equal(20, ((struct lysc_type_bin *)type)->length->parts[1].min_u64);
+    assert_int_equal(30, ((struct lysc_type_bin *)type)->length->parts[1].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module g {namespace urn:g;prefix g;leaf l {type binary {length \"16 | 32\";}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_non_null(((struct lysc_type_bin *)type)->length);
+    assert_non_null(((struct lysc_type_bin *)type)->length->parts);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_bin *)type)->length->parts));
+    assert_int_equal(16, ((struct lysc_type_bin *)type)->length->parts[0].min_u64);
+    assert_int_equal(16, ((struct lysc_type_bin *)type)->length->parts[0].max_u64);
+    assert_int_equal(32, ((struct lysc_type_bin *)type)->length->parts[1].min_u64);
+    assert_int_equal(32, ((struct lysc_type_bin *)type)->length->parts[1].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module h {namespace urn:h;prefix h;typedef mytype {type binary {length 10;}}"
+            "leaf l {type mytype {length \"10\";}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_non_null(((struct lysc_type_bin *)type)->length);
+    assert_non_null(((struct lysc_type_bin *)type)->length->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_bin *)type)->length->parts));
+    assert_int_equal(10, ((struct lysc_type_bin *)type)->length->parts[0].min_u64);
+    assert_int_equal(10, ((struct lysc_type_bin *)type)->length->parts[0].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module i {namespace urn:i;prefix i;typedef mytype {type binary {length 10..100;}}"
+            "leaf l {type mytype {length \"50\";}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_non_null(((struct lysc_type_bin *)type)->length);
+    assert_non_null(((struct lysc_type_bin *)type)->length->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_bin *)type)->length->parts));
+    assert_int_equal(50, ((struct lysc_type_bin *)type)->length->parts[0].min_u64);
+    assert_int_equal(50, ((struct lysc_type_bin *)type)->length->parts[0].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module j {namespace urn:j;prefix j;typedef mytype {type binary {length 10..100;}}"
+            "leaf l {type mytype {length \"10..30|60..100\";}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_non_null(((struct lysc_type_bin *)type)->length);
+    assert_non_null(((struct lysc_type_bin *)type)->length->parts);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_bin *)type)->length->parts));
+    assert_int_equal(10, ((struct lysc_type_bin *)type)->length->parts[0].min_u64);
+    assert_int_equal(30, ((struct lysc_type_bin *)type)->length->parts[0].max_u64);
+    assert_int_equal(60, ((struct lysc_type_bin *)type)->length->parts[1].min_u64);
+    assert_int_equal(100, ((struct lysc_type_bin *)type)->length->parts[1].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module k {namespace urn:k;prefix k;typedef mytype {type binary {length 10..100;}}"
+            "leaf l {type mytype {length \"10..80\";}}leaf ll {type mytype;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_non_null(((struct lysc_type_bin *)type)->length);
+    assert_non_null(((struct lysc_type_bin *)type)->length->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_bin *)type)->length->parts));
+    assert_int_equal(10, ((struct lysc_type_bin *)type)->length->parts[0].min_u64);
+    assert_int_equal(80, ((struct lysc_type_bin *)type)->length->parts[0].max_u64);
+    type = ((struct lysc_node_leaf *)mod->compiled->data->next)->type;
+    assert_non_null(type);
+    assert_int_equal(2, type->refcount);
+    assert_non_null(((struct lysc_type_bin *)type)->length);
+    assert_non_null(((struct lysc_type_bin *)type)->length->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_bin *)type)->length->parts));
+    assert_int_equal(10, ((struct lysc_type_bin *)type)->length->parts[0].min_u64);
+    assert_int_equal(100, ((struct lysc_type_bin *)type)->length->parts[0].max_u64);
+
+    /* new string is tested in file ./tests/utests/types/string.c */
+#if 0
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module l {namespace urn:l;prefix l;typedef mytype {type string {length 10..100;}}"
+            "typedef mytype2 {type mytype {pattern '[0-9]*';}} leaf l {type mytype2 {pattern '[0-4]*';}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_STRING, type->basetype);
+    assert_int_equal(1, type->refcount);
+    assert_non_null(((struct lysc_type_str *)type)->length);
+    assert_non_null(((struct lysc_type_str *)type)->length->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_str *)type)->length->parts));
+    assert_int_equal(10, ((struct lysc_type_str *)type)->length->parts[0].min_u64);
+    assert_int_equal(100, ((struct lysc_type_str *)type)->length->parts[0].max_u64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module m {namespace urn:m;prefix m;typedef mytype {type string {length 10;}}"
+            "leaf l {type mytype {length min..max;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_STRING, type->basetype);
+    assert_int_equal(1, type->refcount);
+    assert_non_null(((struct lysc_type_str *)type)->length);
+    assert_non_null(((struct lysc_type_str *)type)->length->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_str *)type)->length->parts));
+    assert_int_equal(10, ((struct lysc_type_str *)type)->length->parts[0].min_u64);
+    assert_int_equal(10, ((struct lysc_type_str *)type)->length->parts[0].max_u64);
+#endif
+
+    /* invalid values */
+    assert_int_equal(LY_EDENIED, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;leaf l {type binary {length -10;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - value \"-10\" does not fit the type limitations.", "/aa:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb;leaf l {type binary {length 18446744073709551616;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - invalid value \"18446744073709551616\".", "/bb:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module cc {namespace urn:cc;prefix cc;leaf l {type binary {length \"max .. 10\";}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - unexpected data after max keyword (.. 10).", "/cc:l");
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module dd {namespace urn:dd;prefix dd;leaf l {type binary {length 50..10;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - values are not in ascending order (10).", "/dd:l");
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module ee {namespace urn:ee;prefix ee;leaf l {type binary {length \"50 | 10\";}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - values are not in ascending order (10).", "/ee:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff {namespace urn:ff;prefix ff;leaf l {type binary {length \"x\";}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - unexpected data (x).", "/ff:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg {namespace urn:gg;prefix gg;leaf l {type binary {length \"50 | min\";}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - unexpected data before min keyword (50 | ).", "/gg:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module hh {namespace urn:hh;prefix hh;leaf l {type binary {length \"| 50\";}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - unexpected beginning of the expression (| 50).", "/hh:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ii {namespace urn:ii;prefix ii;leaf l {type binary {length \"10 ..\";}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - unexpected end of the expression after \"..\" (10 ..).", "/ii:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module jj {namespace urn:jj;prefix jj;leaf l {type binary {length \".. 10\";}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - unexpected \"..\" without a lower bound.", "/jj:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module kk {namespace urn:kk;prefix kk;leaf l {type binary {length \"10 |\";}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - unexpected end of the expression (10 |).", "/kk:l");
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module kl {namespace urn:kl;prefix kl;leaf l {type binary {length \"10..20 | 15..30\";}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - values are not in ascending order (15).", "/kl:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ll {namespace urn:ll;prefix ll;typedef mytype {type binary {length 10;}}"
+            "leaf l {type mytype {length 11;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - the derived restriction (11) is not equally or more limiting.", "/ll:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm {namespace urn:mm;prefix mm;typedef mytype {type binary {length 10..100;}}"
+            "leaf l {type mytype {length 1..11;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - the derived restriction (1..11) is not equally or more limiting.", "/mm:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module nn {namespace urn:nn;prefix nn;typedef mytype {type binary {length 10..100;}}"
+            "leaf l {type mytype {length 20..110;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - the derived restriction (20..110) is not equally or more limiting.", "/nn:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module oo {namespace urn:oo;prefix oo;typedef mytype {type binary {length 10..100;}}"
+            "leaf l {type mytype {length 20..30|110..120;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - the derived restriction (20..30|110..120) is not equally or more limiting.", "/oo:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module pp {namespace urn:pp;prefix pp;typedef mytype {type binary {length 10..11;}}"
+            "leaf l {type mytype {length 15;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - the derived restriction (15) is not equally or more limiting.", "/pp:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module qq {namespace urn:qq;prefix qq;typedef mytype {type binary {length 10..20|30..40;}}"
+            "leaf l {type mytype {length 15..35;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - the derived restriction (15..35) is not equally or more limiting.", "/qq:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module rr {namespace urn:rr;prefix rr;typedef mytype {type binary {length 10;}}"
+            "leaf l {type mytype {length 10..35;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid length restriction - the derived restriction (10..35) is not equally or more limiting.", "/rr:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ss {namespace urn:ss;prefix ss;leaf l {type binary {pattern '[0-9]*';}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid type restrictions for binary type.", "/ss:l");
+}
+
+static void
+test_type_pattern(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_type *type;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {yang-version 1.1; namespace urn:a;prefix a;leaf l {type string {"
+            "pattern .* {error-app-tag errortag;error-message error;}"
+            "pattern [0-9].*[0-9] {modifier invert-match;}}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_non_null(((struct lysc_type_str *)type)->patterns);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_str *)type)->patterns));
+    assert_string_equal("errortag", ((struct lysc_type_str *)type)->patterns[0]->eapptag);
+    assert_string_equal("error", ((struct lysc_type_str *)type)->patterns[0]->emsg);
+    assert_string_equal(".*", ((struct lysc_type_str *)type)->patterns[0]->expr);
+    assert_int_equal(0, ((struct lysc_type_str *)type)->patterns[0]->inverted);
+    assert_null(((struct lysc_type_str *)type)->patterns[1]->eapptag);
+    assert_null(((struct lysc_type_str *)type)->patterns[1]->emsg);
+    assert_string_equal("[0-9].*[0-9]", ((struct lysc_type_str *)type)->patterns[1]->expr);
+    assert_int_equal(1, ((struct lysc_type_str *)type)->patterns[1]->inverted);
+
+    /* new string is tested in file ./tests/utests/types/string.c */
+#if 0
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b;typedef mytype {type string {pattern '[0-9]*';}}"
+            "typedef mytype2 {type mytype {length 10;}} leaf l {type mytype2 {pattern '[0-4]*';}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_STRING, type->basetype);
+    assert_int_equal(1, type->refcount);
+    assert_non_null(((struct lysc_type_str *)type)->patterns);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_str *)type)->patterns));
+    assert_string_equal("[0-9]*", ((struct lysc_type_str *)type)->patterns[0]->expr);
+    assert_int_equal(3, ((struct lysc_type_str *)type)->patterns[0]->refcount);
+    assert_string_equal("[0-4]*", ((struct lysc_type_str *)type)->patterns[1]->expr);
+    assert_int_equal(1, ((struct lysc_type_str *)type)->patterns[1]->refcount);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {namespace urn:c;prefix c;typedef mytype {type string {pattern '[0-9]*';}}"
+            "leaf l {type mytype {length 10;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_STRING, type->basetype);
+    assert_int_equal(1, type->refcount);
+    assert_non_null(((struct lysc_type_str *)type)->patterns);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_str *)type)->patterns));
+    assert_string_equal("[0-9]*", ((struct lysc_type_str *)type)->patterns[0]->expr);
+    assert_int_equal(2, ((struct lysc_type_str *)type)->patterns[0]->refcount);
+
+    /* test substitutions */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module d {namespace urn:d;prefix d;leaf l {type string {"
+            "pattern '^\\p{IsLatinExtended-A}$';}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_non_null(((struct lysc_type_str *)type)->patterns);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_str *)type)->patterns));
+    assert_string_equal("^\\p{IsLatinExtended-A}$", ((struct lysc_type_str *)type)->patterns[0]->expr);
+#endif
+
+    /* TODO check some data "^ř$" */
+}
+
+static void
+test_type_enum(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_type *type;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {yang-version 1.1; namespace urn:a;prefix a;feature f; leaf l {type enumeration {"
+            "enum automin; enum min {value -2147483648;}enum one {if-feature f; value 1;}"
+            "enum two; enum seven {value 7;}enum eight;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_ENUM, type->basetype);
+    assert_non_null(((struct lysc_type_enum *)type)->enums);
+    assert_int_equal(5, LY_ARRAY_COUNT(((struct lysc_type_enum *)type)->enums));
+    assert_string_equal("automin", ((struct lysc_type_enum *)type)->enums[0].name);
+    assert_int_equal(0, ((struct lysc_type_enum *)type)->enums[0].value);
+    assert_string_equal("min", ((struct lysc_type_enum *)type)->enums[1].name);
+    assert_int_equal(INT64_C(-2147483648), ((struct lysc_type_enum *)type)->enums[1].value);
+    assert_string_equal("two", ((struct lysc_type_enum *)type)->enums[2].name);
+    assert_int_equal(2, ((struct lysc_type_enum *)type)->enums[2].value);
+    assert_string_equal("seven", ((struct lysc_type_enum *)type)->enums[3].name);
+    assert_int_equal(7, ((struct lysc_type_enum *)type)->enums[3].value);
+    assert_string_equal("eight", ((struct lysc_type_enum *)type)->enums[4].name);
+    assert_int_equal(8, ((struct lysc_type_enum *)type)->enums[4].value);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {yang-version 1.1; namespace urn:b;prefix b;feature f; typedef mytype {type enumeration {"
+            "enum 11; enum min {value -2147483648;}enum x$&;"
+            "enum two; enum seven {value 7;}enum eight;}} leaf l { type mytype {enum seven;enum eight;}}}",
+            LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_ENUM, type->basetype);
+    assert_non_null(((struct lysc_type_enum *)type)->enums);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_enum *)type)->enums));
+    assert_string_equal("seven", ((struct lysc_type_enum *)type)->enums[0].name);
+    assert_int_equal(7, ((struct lysc_type_enum *)type)->enums[0].value);
+    assert_string_equal("eight", ((struct lysc_type_enum *)type)->enums[1].name);
+    assert_int_equal(8, ((struct lysc_type_enum *)type)->enums[1].value);
+
+    const char *new_module = "module moc_c {yang-version 1.1; namespace urn:moc_c;prefix moc_c;feature f; typedef mytype {type enumeration {"
+            "enum first{value -270;} enum second; enum third {value -400;} enum fourth;}} leaf l { type mytype;}}";
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, new_module, LYS_IN_YANG, &mod));
+
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_ENUM, type->basetype);
+    assert_non_null(((struct lysc_type_enum *)type)->enums);
+    assert_int_equal(4, LY_ARRAY_COUNT(((struct lysc_type_enum *)type)->enums));
+    assert_string_equal("first", ((struct lysc_type_enum *)type)->enums[0].name);
+    assert_int_equal(-270, ((struct lysc_type_enum *)type)->enums[0].value);
+    assert_string_equal("second", ((struct lysc_type_enum *)type)->enums[1].name);
+    assert_int_equal(-269, ((struct lysc_type_enum *)type)->enums[1].value);
+    assert_string_equal("third", ((struct lysc_type_enum *)type)->enums[2].name);
+    assert_int_equal(-400, ((struct lysc_type_enum *)type)->enums[2].value);
+    assert_string_equal("fourth", ((struct lysc_type_enum *)type)->enums[3].name);
+    assert_int_equal(-268, ((struct lysc_type_enum *)type)->enums[3].value);
+
+    new_module = "module moc_d {yang-version 1.1; namespace urn:moc_d;prefix moc_d;feature f; typedef mytype {type enumeration {"
+            "enum first; enum second;}} leaf l { type mytype;}}";
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, new_module, LYS_IN_YANG, &mod));
+
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_ENUM, type->basetype);
+    assert_non_null(((struct lysc_type_enum *)type)->enums);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_enum *)type)->enums));
+    assert_string_equal("first", ((struct lysc_type_enum *)type)->enums[0].name);
+    assert_int_equal(0, ((struct lysc_type_enum *)type)->enums[0].value);
+    assert_string_equal("second", ((struct lysc_type_enum *)type)->enums[1].name);
+    assert_int_equal(1, ((struct lysc_type_enum *)type)->enums[1].value);
+
+    /* invalid cases */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; feature f; leaf l {type enumeration {"
+            "enum one {if-feature f;}}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Invalid keyword \"if-feature\" as a child of \"enum\" - the statement is allowed only in YANG 1.1 modules.", "Line number 1.");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type enumeration {"
+            "enum one {value -2147483649;}}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Invalid value \"-2147483649\" of \"value\".", "Line number 1.");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type enumeration {"
+            "enum one {value 2147483648;}}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Invalid value \"2147483648\" of \"value\".", "Line number 1.");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type enumeration {"
+            "enum one; enum one;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Duplicate identifier \"one\" of enum statement.", "Line number 1.");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type enumeration {"
+            "enum '';}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Enum name must not be zero-length.", "Line number 1.");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type enumeration {"
+            "enum ' x';}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Enum name must not have any leading or trailing whitespaces (\" x\").", "Line number 1.");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type enumeration {"
+            "enum 'x ';}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Enum name must not have any leading or trailing whitespaces (\"x \").", "Line number 1.");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type enumeration {"
+            "enum 'inva\nlid';}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Control characters in enum name should be avoided (\"inva\nlid\", character number 5).", NULL);
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb; leaf l {type enumeration;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Missing enum substatement for enumeration type.", "/bb:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module cc {yang-version 1.1;namespace urn:cc;prefix cc;typedef mytype {type enumeration {enum one;}}"
+            "leaf l {type mytype {enum two;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid enumeration - derived type adds new item \"two\".", "/cc:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module dd {yang-version 1.1;namespace urn:dd;prefix dd;typedef mytype {type enumeration {enum one;}}"
+            "leaf l {type mytype {enum one {value 1;}}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid enumeration - value of the item \"one\" has changed from 0 to 1 in the derived type.", "/dd:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ee {namespace urn:ee;prefix ee;leaf l {type enumeration {enum x {value 2147483647;}enum y;}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid enumeration - it is not possible to auto-assign enum value for \"y\" since the highest value is already 2147483647.", "/ee:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff {namespace urn:ff;prefix ff;leaf l {type enumeration {enum x {value 1;}enum y {value 1;}}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid enumeration - value 1 collide in items \"y\" and \"x\".", "/ff:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg {namespace urn:gg;prefix gg;typedef mytype {type enumeration;}"
+            "leaf l {type mytype {enum one;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Missing enum substatement for enumeration type mytype.", "/gg:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module hh {namespace urn:hh;prefix hh; typedef mytype {type enumeration {enum one;}}"
+            "leaf l {type mytype {enum one;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Enumeration type can be subtyped only in YANG 1.1 modules.", "/hh:l");
+}
+
+static void
+test_type_dec64(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_type *type;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a;leaf l {type decimal64 {"
+            "fraction-digits 2;range min..max;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_DEC64, type->basetype);
+    assert_int_equal(2, ((struct lysc_type_dec *)type)->fraction_digits);
+    assert_non_null(((struct lysc_type_dec *)type)->range);
+    assert_non_null(((struct lysc_type_dec *)type)->range->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_dec *)type)->range->parts));
+    assert_int_equal(INT64_C(-9223372036854775807) - INT64_C(1), ((struct lysc_type_dec *)type)->range->parts[0].min_64);
+    assert_int_equal(INT64_C(9223372036854775807), ((struct lysc_type_dec *)type)->range->parts[0].max_64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b;typedef mytype {type decimal64 {"
+            "fraction-digits 2;range '3.14 | 5.1 | 10';}}leaf l {type mytype;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_DEC64, type->basetype);
+    assert_int_equal(2, ((struct lysc_type_dec *)type)->fraction_digits);
+    assert_non_null(((struct lysc_type_dec *)type)->range);
+    assert_non_null(((struct lysc_type_dec *)type)->range->parts);
+    assert_int_equal(3, LY_ARRAY_COUNT(((struct lysc_type_dec *)type)->range->parts));
+    assert_int_equal(314, ((struct lysc_type_dec *)type)->range->parts[0].min_64);
+    assert_int_equal(314, ((struct lysc_type_dec *)type)->range->parts[0].max_64);
+    assert_int_equal(510, ((struct lysc_type_dec *)type)->range->parts[1].min_64);
+    assert_int_equal(510, ((struct lysc_type_dec *)type)->range->parts[1].max_64);
+    assert_int_equal(1000, ((struct lysc_type_dec *)type)->range->parts[2].min_64);
+    assert_int_equal(1000, ((struct lysc_type_dec *)type)->range->parts[2].max_64);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {namespace urn:c;prefix c;typedef mytype {type decimal64 {"
+            "fraction-digits 2;range '1 .. 65535';}}leaf l {type mytype;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_int_equal(LY_TYPE_DEC64, type->basetype);
+    assert_int_equal(2, ((struct lysc_type_dec *)type)->fraction_digits);
+    assert_non_null(((struct lysc_type_dec *)type)->range);
+    assert_non_null(((struct lysc_type_dec *)type)->range->parts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_dec *)type)->range->parts));
+    assert_int_equal(100, ((struct lysc_type_dec *)type)->range->parts[0].min_64);
+    assert_int_equal(6553500, ((struct lysc_type_dec *)type)->range->parts[0].max_64);
+
+    /* invalid cases */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type decimal64 {fraction-digits 0;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Invalid value \"0\" of \"fraction-digits\".", "Line number 1.");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type decimal64 {fraction-digits -1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Invalid value \"-1\" of \"fraction-digits\".", "Line number 1.");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type decimal64 {fraction-digits 19;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Value \"19\" is out of \"fraction-digits\" bounds.", "Line number 1.");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type decimal64;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Missing fraction-digits substatement for decimal64 type.", "/aa:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ab {namespace urn:ab;prefix ab; typedef mytype {type decimal64;}leaf l {type mytype;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Missing fraction-digits substatement for decimal64 type mytype.", "/ab:l");
+
+    assert_int_equal(LY_EINVAL, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb; leaf l {type decimal64 {fraction-digits 2;"
+            "range '3.142';}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Range boundary \"3.142\" of decimal64 type exceeds defined number (2) of fraction digits.", "/bb:l");
+
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module cc {namespace urn:cc;prefix cc; leaf l {type decimal64 {fraction-digits 2;"
+            "range '4 | 3.14';}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid range restriction - values are not in ascending order (3.14).", "/cc:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module dd {namespace urn:dd;prefix dd; typedef mytype {type decimal64 {fraction-digits 2;}}"
+            "leaf l {type mytype {fraction-digits 3;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid fraction-digits substatement for type not directly derived from decimal64 built-in type.", "/dd:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module de {namespace urn:de;prefix de; typedef mytype {type decimal64 {fraction-digits 2;}}"
+            "typedef mytype2 {type mytype {fraction-digits 3;}}leaf l {type mytype2;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid fraction-digits substatement for type \"mytype2\" not directly derived from decimal64 built-in type.", "/de:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ee {namespace urn:ee;prefix ee;typedef mytype {type decimal64 {"
+            "fraction-digits 18;range '-10 .. 0';}}leaf l {type mytype;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid range restriction - invalid value \"-10000000000000000000\".", "/ee:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ee {namespace urn:ee;prefix ee;typedef mytype {type decimal64 {"
+            "fraction-digits 18;range '0 .. 10';}}leaf l {type mytype;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid range restriction - invalid value \"10000000000000000000\".", "/ee:l");
+}
+
+static void
+test_type_instanceid(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_type *type;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a;typedef mytype {type instance-identifier {require-instance false;}}"
+            "leaf l1 {type instance-identifier {require-instance true;}}"
+            "leaf l2 {type mytype;} leaf l3 {type instance-identifier;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_INST, type->basetype);
+    assert_int_equal(1, ((struct lysc_type_instanceid *)type)->require_instance);
+
+    type = ((struct lysc_node_leaf *)mod->compiled->data->next)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_INST, type->basetype);
+    assert_int_equal(0, ((struct lysc_type_instanceid *)type)->require_instance);
+
+    type = ((struct lysc_node_leaf *)mod->compiled->data->next->next)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_INST, type->basetype);
+    assert_int_equal(1, ((struct lysc_type_instanceid *)type)->require_instance);
+
+    /* invalid cases */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type instance-identifier {require-instance yes;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"aa\" failed.", NULL,
+            "Invalid value \"yes\" of \"require-instance\".", "Line number 1.");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type instance-identifier {fraction-digits 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid type restrictions for instance-identifier type.", "/aa:l");
+}
+
+static ly_bool
+identity_isderived(const struct lysc_ident *base, const char *der)
+{
+    LY_ARRAY_COUNT_TYPE u;
+
+    LY_ARRAY_FOR(base->derived, u) {
+        if (!strcmp(base->derived[u]->name, der)) {
+            return 1;
+        }
+        if (identity_isderived(base->derived[u], der)) {
+            return 1;
+        }
+    }
+    return 0;
+}
+
+static ly_bool
+contains_derived_identity(struct ly_ctx *ctx, char *module_name,
+        char *revision, char *identity_name, char *derived_name)
+{
+    LY_ARRAY_COUNT_TYPE u = 0;
+    struct lys_module *mod;
+    struct lysc_ident *identity = NULL;
+
+    if (!(mod = ly_ctx_get_module(ctx, module_name, revision))) {
+        return 0;
+    }
+
+    LY_ARRAY_FOR(mod->identities, u) {
+        if (!strcmp(identity_name, mod->identities[u].name)) {
+            identity = &mod->identities[u];
+            break;
+        }
+    }
+    if (!identity) {
+        return 0;
+    }
+
+    return identity_isderived(identity, derived_name);
+}
+
+static void
+test_identity(void **state)
+{
+    char *str;
+    const char *feats[2] = {NULL, NULL};
+    struct lyd_node *tree;
+    const char *data;
+
+#define RESET_CTX(CTX) \
+    ly_ctx_destroy(UTEST_LYCTX); \
+    assert_int_equal(LY_SUCCESS, ly_ctx_new(NULL, LY_CTX_DISABLE_SEARCHDIRS, &UTEST_LYCTX));
+
+    /* It does not matter whether the base identity is in implemented
+     * module or not.
+     */
+
+    /* Implemented module's identity expand base identity located in unimplemented module. */
+    str = "module a {namespace urn:a; prefix a;"
+            "identity baseid;"
+            "identity id1 {base baseid;}"
+            "}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, str);
+    str = "module b {namespace urn:b; prefix b; import a {prefix a;}"
+            "identity id2 {base a:baseid;}"
+            "leaf lf {type identityref {base a:baseid;}}"
+            "}";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id2"));
+    data = "<lf xmlns=\"urn:b\">id2</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_tree(tree);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id1"));
+    data = "<lf xmlns=\"urn:b\" xmlns:ids=\"urn:a\">ids:id1</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG("Invalid identityref \"ids:id1\" value - identity found in non-implemented module \"a\".",
+            "Schema location \"/b:lf\", line number 1.");
+    assert_non_null(ly_ctx_get_module(UTEST_LYCTX, "a", NULL));
+    assert_false(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id3"));
+    data = "<lf xmlns=\"urn:b\" xmlns:ids=\"urn:a\">ids:id3</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    RESET_CTX(UTEST_LYCTX);
+
+    /* Unimplemented module (c) expand base identity located in unimplemented module. */
+    str = "module a {namespace urn:a; prefix a;"
+            "identity baseid;"
+            "identity id1 {base baseid;}"
+            "}\n"
+            "module c {namespace urn:c; prefix c; import a {prefix a;}"
+            "identity id3 {base a:baseid;}"
+            "}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, str);
+    str = "module b {namespace urn:b; prefix b; import a {prefix a;} import c {prefix c;}"
+            "identity id2 {base a:baseid;}"
+            "leaf lf {type identityref {base a:baseid;}}"
+            "}";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id2"));
+    data = "<lf xmlns=\"urn:b\">id2</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_tree(tree);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id1"));
+    data = "<lf xmlns=\"urn:b\" xmlns:ids=\"urn:a\">ids:id1</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG("Invalid identityref \"ids:id1\" value - identity found in non-implemented module \"a\".",
+            "Schema location \"/b:lf\", line number 1.");
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id3"));
+    data = "<lf xmlns=\"urn:b\" xmlns:ids=\"urn:c\">ids:id3</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG("Invalid identityref \"ids:id3\" value - identity found in non-implemented module \"c\".",
+            "Schema location \"/b:lf\", line number 1.");
+    RESET_CTX(UTEST_LYCTX);
+
+    /* Unimplemented module expand base identity located in implemented module. */
+    str = "module b {namespace urn:b; prefix b;"
+            "identity baseid;"
+            "identity id2 {base baseid;}"
+            "leaf lf {type identityref {base baseid;}}"
+            "}";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    str = "module a {namespace urn:a; prefix a; import b {prefix b;}"
+            "identity id1 {base b:baseid;}"
+            "}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, str);
+    /* load (but don't implement) module (a) into context by module (c) */
+    str = "module c {namespace urn:c; prefix c; import a {prefix a;}}";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "b", NULL, "baseid", "id2"));
+    data = "<lf xmlns=\"urn:b\">id2</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_tree(tree);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "b", NULL, "baseid", "id1"));
+    data = "<lf xmlns=\"urn:b\" xmlns:ids=\"urn:a\">ids:id1</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG("Invalid identityref \"ids:id1\" value - identity found in non-implemented module \"a\".",
+            "Schema location \"/b:lf\", line number 1.");
+    RESET_CTX(UTEST_LYCTX);
+
+    /* Transitivity of derived identity through unimplemented module. */
+    str = "module a {namespace urn:a; prefix a;"
+            "identity baseid;"
+            "identity id1 {base baseid;}"
+            "}\n"
+            "module c {namespace urn:c; prefix c; import a {prefix a;}"
+            "identity id3 {base a:baseid;}"
+            "}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, str);
+    str = "module b {namespace urn:b; prefix b; import c {prefix c;} import a {prefix a;}"
+            "identity id2 {base c:id3;}"
+            "leaf lf {type identityref {base a:baseid;}}"
+            "}";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id2"));
+    data = "<lf xmlns=\"urn:b\">id2</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_tree(tree);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id1"));
+    data = "<lf xmlns=\"urn:b\">id1</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id3"));
+    data = "<lf xmlns=\"urn:b\">id3</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    RESET_CTX(UTEST_LYCTX);
+
+    /* The base reference must not refer to a non-existent module,
+     * even if the module is not implemented.
+     */
+    str = "module b {namespace urn:b; prefix b;"
+            "identity ident { base a:baseid;}"
+            "}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, str);
+    /* load (but don't implement) module (b) into context by module (c) */
+    str = "module c {namespace urn:c; prefix c; import b {prefix b;}}";
+    UTEST_INVALID_MODULE(str, LYS_IN_YANG, NULL, LY_EVALID);
+    RESET_CTX(UTEST_LYCTX);
+
+    /* Tests in which multiple revisions are available and the import
+     * does not specify an exact revision.
+     */
+
+    /* The old revision was soon implemented
+     * and therefore its "baseid" is used.
+     */
+    str = "module a {namespace urn:a; prefix a;"
+            "revision \"2014-05-08\";"
+            "identity baseid;"
+            "leaf alf { type identityref { base baseid;}}"
+            "}";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    str = "module a {namespace urn:a; prefix a;"
+            "revision \"2015-05-08\";"
+            "identity baseid;"
+            "leaf alf { type identityref { base baseid;}}"
+            "}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, str);
+    str = "module b {namespace urn:b; prefix b;"
+            "import a {prefix a;}"
+            "identity baseref { base a:baseid;}"
+            "identity id1 { base baseref;}"
+            "identity id2 { base baseref;}"
+            "}";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", "2014-05-08", "baseid", "baseref"));
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", "2014-05-08", "baseid", "id1"));
+    data = "<alf xmlns=\"urn:a\" xmlns:ids=\"urn:b\">ids:id1</alf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_tree(tree);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", "2014-05-08", "baseid", "id2"));
+    data = "<alf xmlns=\"urn:a\" xmlns:ids=\"urn:b\">ids:id2</alf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_tree(tree);
+    RESET_CTX(UTEST_LYCTX);
+
+    /* Even if a newer revision has been implemented, the old and
+     * unimplemented one will be used because it has already been
+     * imported. Therefore, if the user wants to use multiple revisions,
+     * he must choose one and implement it as soon as possible.
+     */
+    str = "module a {namespace urn:a; prefix a;"
+            "revision \"2014-05-08\";"
+            "identity baseid;"
+            "leaf alf { type identityref { base baseid;}}"
+            "}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, str);
+    str = "module b {namespace urn:b; prefix b;"
+            "import a {prefix a;}"
+            "identity baseref { base a:baseid;}"
+            "identity id1 { base baseref;}"
+            "identity id2 { base baseref;}"
+            "}";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    str = "module a {namespace urn:a; prefix a;"
+            "revision \"2015-05-08\";"
+            "identity baseid;"
+            "leaf alf { type identityref { base baseid;}}"
+            "}";
+    ly_log_level(LY_LLVRB);
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    CHECK_LOG("Implemented module \"a@2015-05-08\" was not and will not "
+            "be imported if the revision-date is missing in the import "
+            "statement. Instead, the revision \"2014-05-08\" is imported.", NULL);
+    ly_log_level(LY_LLWRN);
+    /* Data is inserted only to implemented revision. */
+    data = "<alf xmlns=\"urn:a\" xmlns:ids=\"urn:b\">ids:id1</alf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    data = "<alf xmlns=\"urn:a\" xmlns:ids=\"urn:b\">ids:id2</alf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", "2014-05-08", "baseid", "baseref"));
+    assert_false(contains_derived_identity(UTEST_LYCTX, "a", "2015-05-08", "baseid", "baseref"));
+    RESET_CTX(UTEST_LYCTX);
+
+    /* Identity testing with if-features. */
+
+    /* The if-feature has no effect if the module is imported. */
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a;"
+            "feature f;"
+            "identity baseid { if-feature \"f\";}"
+            "}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, str);
+    str = "module b {namespace urn:b; prefix b; import a { prefix a;}"
+            "identity id1 { base a:baseid;}"
+            "leaf lf { type identityref { base a:baseid;}}"
+            "}";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id1"));
+    data = "<lf xmlns=\"urn:b\">id1</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_tree(tree);
+    RESET_CTX(UTEST_LYCTX);
+
+    /* Even if the identity in the implemented module is disabled,
+     * it can be used as a base.
+     */
+    str = "module a {yang-version 1.1; namespace urn:a; prefix a;"
+            "feature f;"
+            "identity baseid { if-feature \"f\";}"
+            "}";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    str = "module b {namespace urn:b; prefix b; import a { prefix a;}"
+            "identity id1 { base a:baseid;}"
+            "leaf lf { type identityref { base a:baseid;}}"
+            "}";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id1"));
+    data = "<lf xmlns=\"urn:b\">id1</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_tree(tree);
+    RESET_CTX(UTEST_LYCTX);
+
+    /* Identity derivation cannot be instantiated if it is disabled.
+     * Conversely, if the identity is enabled, it can be instantiated.
+     */
+    str = "module a {namespace urn:a; prefix a;"
+            "identity baseid;"
+            "}";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    str = "module b {yang-version 1.1; namespace urn:b; prefix b; import a { prefix a;}"
+            "feature f2;"
+            "feature f3;"
+            "identity id1 { base a:baseid;}"
+            "identity id2 { if-feature \"f2\"; base a:baseid;}"
+            "identity id3 { if-feature \"f3\"; base a:baseid;}"
+            "leaf lf { type identityref { base a:baseid;}}"
+            "}";
+    feats[0] = "f2";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, feats, NULL);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id1"));
+    data = "<lf xmlns=\"urn:b\">id1</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_tree(tree);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id2"));
+    data = "<lf xmlns=\"urn:b\">id2</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_tree(tree);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id3"));
+    data = "<lf xmlns=\"urn:b\">id3</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Invalid identityref \"id3\" value - identity is disabled by if-feature.",
+            "Schema location \"/b:lf\", line number 1.");
+    RESET_CTX(UTEST_LYCTX);
+
+    /* The derived identities are enabled and disabled in submodule. */
+    str = "submodule asub {yang-version 1.1; belongs-to a {prefix a;}"
+            "feature f2;"
+            "feature f3;"
+            "identity id1 { base a:baseid;}"
+            "identity id2 { if-feature \"f2\"; base a:baseid;}"
+            "identity id3 { if-feature \"f3\"; base a:baseid;}"
+            "}";
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, str);
+    str = "module a {namespace urn:a; prefix a; include asub;"
+            "identity baseid;"
+            "}";
+    feats[0] = "f2";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, feats, NULL);
+    str = "module b {yang-version 1.1; namespace urn:b; prefix b; import a { prefix a;}"
+            "leaf lf { type identityref { base a:baseid;}}"
+            "}";
+    UTEST_ADD_MODULE(str, LYS_IN_YANG, NULL, NULL);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id1"));
+    data = "<lf xmlns=\"urn:b\" xmlns:ids=\"urn:a\">ids:id1</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_tree(tree);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id2"));
+    data = "<lf xmlns=\"urn:b\" xmlns:ids=\"urn:a\">ids:id2</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_tree(tree);
+    assert_true(contains_derived_identity(UTEST_LYCTX, "a", NULL, "baseid", "id3"));
+    data = "<lf xmlns=\"urn:b\" xmlns:ids=\"urn:a\">ids:id3</lf>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);
+    CHECK_LOG_CTX("Invalid identityref \"ids:id3\" value - identity is disabled by if-feature.",
+            "Schema location \"/b:lf\", line number 1.");
+    RESET_CTX(UTEST_LYCTX);
+
+#undef RESET_CTX
+}
+
+static void
+test_type_identityref(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_type *type;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {yang-version 1.1;namespace urn:a;prefix a;identity i; identity j; identity k {base i;}"
+            "typedef mytype {type identityref {base i;}}"
+            "leaf l1 {type mytype;} leaf l2 {type identityref {base a:k; base j;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_IDENT, type->basetype);
+    assert_non_null(((struct lysc_type_identityref *)type)->bases);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_identityref *)type)->bases));
+    assert_string_equal("i", ((struct lysc_type_identityref *)type)->bases[0]->name);
+
+    type = ((struct lysc_node_leaf *)mod->compiled->data->next)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_IDENT, type->basetype);
+    assert_non_null(((struct lysc_type_identityref *)type)->bases);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_identityref *)type)->bases));
+    assert_string_equal("k", ((struct lysc_type_identityref *)type)->bases[0]->name);
+    assert_string_equal("j", ((struct lysc_type_identityref *)type)->bases[1]->name);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {yang-version 1.1;namespace urn:b;prefix b;import a {prefix a;}"
+            "leaf l {type identityref {base a:k; base a:j;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_IDENT, type->basetype);
+    assert_non_null(((struct lysc_type_identityref *)type)->bases);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_identityref *)type)->bases));
+    assert_string_equal("k", ((struct lysc_type_identityref *)type)->bases[0]->name);
+    assert_string_equal("j", ((struct lysc_type_identityref *)type)->bases[1]->name);
+
+    /* invalid cases */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; leaf l {type identityref;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Missing base substatement for identityref type.", "/aa:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb; typedef mytype {type identityref;}"
+            "leaf l {type mytype;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Missing base substatement for identityref type mytype.", "/bb:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module cc {namespace urn:cc;prefix cc; identity i; typedef mytype {type identityref {base i;}}"
+            "leaf l {type mytype {base i;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid base substatement for the type not directly derived from identityref built-in type.", "/cc:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module dd {namespace urn:dd;prefix dd; identity i; typedef mytype {type identityref {base i;}}"
+            "typedef mytype2 {type mytype {base i;}}leaf l {type mytype2;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid base substatement for the type \"mytype2\" not directly derived from identityref built-in type.", "/dd:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ee {namespace urn:ee;prefix ee; identity i; identity j;"
+            "leaf l {type identityref {base i;base j;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Multiple bases in identityref type are allowed only in YANG 1.1 modules.", "/ee:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff {namespace urn:ff;prefix ff; identity i;leaf l {type identityref {base j;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Unable to find base (j) of identityref.", "/ff:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg {namespace urn:gg;prefix gg;leaf l {type identityref {base x:j;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid prefix used for base (x:j) of identityref.", "/gg:l");
+}
+
+static void
+test_type_leafref(void **state)
+{
+    char *str;
+    struct lys_module *mod;
+    struct lysc_type *type;
+    const char *path;
+    struct lyxp_expr *expr;
+
+    /* lys_path_parse() */
+    path = "invalid_path";
+    assert_int_equal(LY_EVALID, ly_path_parse(UTEST_LYCTX, NULL, path, strlen(path), 1, LY_PATH_BEGIN_EITHER,
+            LY_PATH_PREFIX_OPTIONAL, LY_PATH_PRED_LEAFREF, &expr));
+    path = "..";
+    assert_int_equal(LY_EVALID, ly_path_parse(UTEST_LYCTX, NULL, path, strlen(path), 1, LY_PATH_BEGIN_EITHER,
+            LY_PATH_PREFIX_OPTIONAL, LY_PATH_PRED_LEAFREF, &expr));
+    path = "..[";
+    assert_int_equal(LY_EVALID, ly_path_parse(UTEST_LYCTX, NULL, path, strlen(path), 1, LY_PATH_BEGIN_EITHER,
+            LY_PATH_PREFIX_OPTIONAL, LY_PATH_PRED_LEAFREF, &expr));
+    path = "../";
+    assert_int_equal(LY_EVALID, ly_path_parse(UTEST_LYCTX, NULL, path, strlen(path), 1, LY_PATH_BEGIN_EITHER,
+            LY_PATH_PREFIX_OPTIONAL, LY_PATH_PRED_LEAFREF, &expr));
+    path = "/";
+    assert_int_equal(LY_EVALID, ly_path_parse(UTEST_LYCTX, NULL, path, strlen(path), 1, LY_PATH_BEGIN_EITHER,
+            LY_PATH_PREFIX_OPTIONAL, LY_PATH_PRED_LEAFREF, &expr));
+
+    path = "../../pref:id/xxx[predicate]/invalid!!!";
+    assert_int_equal(LY_EVALID, ly_path_parse(UTEST_LYCTX, NULL, path, strlen(path), 1, LY_PATH_BEGIN_EITHER,
+            LY_PATH_PREFIX_OPTIONAL, LY_PATH_PRED_LEAFREF, &expr));
+    CHECK_LOG_CTX("Invalid character 0x21 ('!'), perhaps \"invalid\" is supposed to be a function call.", NULL);
+
+    path = "/absolute/prefix:path";
+    assert_int_equal(LY_SUCCESS, ly_path_parse(UTEST_LYCTX, NULL, path, strlen(path), 1, LY_PATH_BEGIN_EITHER,
+            LY_PATH_PREFIX_OPTIONAL, LY_PATH_PRED_LEAFREF, &expr));
+    assert_int_equal(4, expr->used);
+    assert_int_equal(LYXP_TOKEN_OPER_PATH, expr->tokens[0]);
+    assert_int_equal(LYXP_TOKEN_NAMETEST, expr->tokens[1]);
+    assert_int_equal(LYXP_TOKEN_OPER_PATH, expr->tokens[2]);
+    assert_int_equal(LYXP_TOKEN_NAMETEST, expr->tokens[3]);
+    lyxp_expr_free(UTEST_LYCTX, expr);
+
+    /* complete leafref paths */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {yang-version 1.1;namespace urn:a;prefix a;"
+            "leaf ref1 {type leafref {path /a:target1;}} leaf ref2 {type leafref {path /a/target2; require-instance false;}}"
+            "leaf target1 {type string;}container a {leaf target2 {type uint8;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_LEAFREF, type->basetype);
+    assert_string_equal("/a:target1", ((struct lysc_type_leafref *)type)->path->expr);
+    assert_ptr_equal(mod, ly_resolve_prefix(UTEST_LYCTX, "a", 1, LY_VALUE_SCHEMA_RESOLVED, ((struct lysc_type_leafref *)type)->prefixes));
+    assert_non_null(((struct lysc_type_leafref *)type)->realtype);
+    assert_int_equal(LY_TYPE_STRING, ((struct lysc_type_leafref *)type)->realtype->basetype);
+    assert_int_equal(1, ((struct lysc_type_leafref *)type)->require_instance);
+    type = ((struct lysc_node_leaf *)mod->compiled->data->next)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_LEAFREF, type->basetype);
+    assert_string_equal("/a/target2", ((struct lysc_type_leafref *)type)->path->expr);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_leafref *)type)->prefixes));
+    assert_non_null(((struct lysc_type_leafref *)type)->realtype);
+    assert_int_equal(LY_TYPE_UINT8, ((struct lysc_type_leafref *)type)->realtype->basetype);
+    assert_int_equal(0, ((struct lysc_type_leafref *)type)->require_instance);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b; typedef mytype {type leafref {path /b:target;}}"
+            "typedef mytype2 {type mytype;} typedef mytype3 {type leafref {path /target;}} leaf ref {type mytype2;}"
+            "leaf target {type leafref {path ../realtarget;}} leaf realtarget {type string;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_int_equal(LY_TYPE_LEAFREF, type->basetype);
+    assert_string_equal("/b:target", ((struct lysc_type_leafref *)type)->path->expr);
+    assert_ptr_equal(mod, ly_resolve_prefix(UTEST_LYCTX, "b", 1, LY_VALUE_SCHEMA_RESOLVED, ((struct lysc_type_leafref *)type)->prefixes));
+    assert_non_null(((struct lysc_type_leafref *)type)->realtype);
+    assert_int_equal(LY_TYPE_STRING, ((struct lysc_type_leafref *)type)->realtype->basetype);
+    assert_int_equal(1, ((struct lysc_type_leafref *)type)->require_instance);
+
+    /* prefixes are reversed to check using correct context of the path! */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {yang-version 1.1;namespace urn:c;prefix b; import b {prefix c;}"
+            "typedef mytype3 {type c:mytype {require-instance false;}}"
+            "leaf ref1 {type b:mytype3;}leaf ref2 {type c:mytype2;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_int_equal(LY_TYPE_LEAFREF, type->basetype);
+    assert_string_equal("/b:target", ((struct lysc_type_leafref *)type)->path->expr);
+    assert_ptr_not_equal(mod, ly_resolve_prefix(UTEST_LYCTX, "b", 1, LY_VALUE_SCHEMA_RESOLVED, ((struct lysc_type_leafref *)type)->prefixes));
+    assert_non_null(((struct lysc_type_leafref *)type)->realtype);
+    assert_int_equal(LY_TYPE_STRING, ((struct lysc_type_leafref *)type)->realtype->basetype);
+    assert_int_equal(0, ((struct lysc_type_leafref *)type)->require_instance);
+    type = ((struct lysc_node_leaf *)mod->compiled->data->next)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_int_equal(LY_TYPE_LEAFREF, type->basetype);
+    assert_string_equal("/b:target", ((struct lysc_type_leafref *)type)->path->expr);
+    assert_ptr_not_equal(mod, ly_resolve_prefix(UTEST_LYCTX, "b", 1, LY_VALUE_SCHEMA_RESOLVED, ((struct lysc_type_leafref *)type)->prefixes));
+    assert_int_equal(1, ((struct lysc_type_leafref *)type)->require_instance);
+
+    /* non-prefixed nodes in path are supposed to be from the module where the leafref type is instantiated */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module d {namespace urn:d;prefix d; import b {prefix b;}"
+            "leaf ref {type b:mytype3;}leaf target {type int8;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_int_equal(LY_TYPE_LEAFREF, type->basetype);
+    assert_string_equal("/target", ((struct lysc_type_leafref *)type)->path->expr);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_leafref *)type)->prefixes));
+    assert_non_null(((struct lysc_type_leafref *)type)->realtype);
+    assert_int_equal(LY_TYPE_INT8, ((struct lysc_type_leafref *)type)->realtype->basetype);
+    assert_int_equal(1, ((struct lysc_type_leafref *)type)->require_instance);
+
+    /* conditional leafrefs */
+    str = "module e {yang-version 1.1;namespace urn:e;prefix e;feature f1;"
+            "leaf ref1 {type leafref {path /target;}}"
+            "leaf target {if-feature 'f1'; type boolean;}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Target of leafref \"ref1\" cannot be referenced because it is disabled.", "Schema location \"/e:ref1\".");
+
+    str = "module en {yang-version 1.1;namespace urn:en;prefix en;feature f1;"
+            "leaf ref1 {if-feature 'f1'; type leafref {path /target;}}"
+            "leaf target {type boolean;}}";
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, &mod));
+
+    str = "module e {yang-version 1.1;namespace urn:e;prefix e;feature f1;"
+            "leaf ref1 {if-feature 'f1'; type leafref {path /target;}}}";
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, str, LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Not found node \"target\" in path.", "Schema location \"/e:ref1\".");
+
+    ly_ctx_set_options(UTEST_LYCTX, LY_CTX_REF_IMPLEMENTED);
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module cl {namespace urn:cl;prefix cl;feature f1;"
+            "leaf f {type string; if-feature 'f1';}"
+            "leaf g {type leafref {path \"/cl:f\";}}"
+            "leaf h {type uint16; default 1;}}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module im {namespace urn:im;prefix im;import cl {prefix cl;}"
+            "leaf ref {must \"/cl:h > 0\"; type uint16;}}", LYS_IN_YANG, &mod));
+    ly_ctx_unset_options(UTEST_LYCTX, LY_CTX_REF_IMPLEMENTED);
+    CHECK_LOG_CTX("Target of leafref \"g\" cannot be referenced because it is disabled.", "Schema location \"/cl:g\".");
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module f {namespace urn:f;prefix f;"
+            "list interface{key name;leaf name{type string;}list address {key ip;leaf ip {type string;}}}"
+            "container default-address{leaf ifname{type leafref{ path \"../../interface/name\";}}"
+            "leaf address {type leafref{ path \"../../interface[  name = current()/../ifname ]/address/ip\";}}}}",
+            LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)(*lysc_node_child_p(mod->compiled->data->prev))->prev)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_int_equal(LY_TYPE_LEAFREF, type->basetype);
+    assert_string_equal("../../interface[  name = current()/../ifname ]/address/ip",
+            ((struct lysc_type_leafref *)type)->path->expr);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_leafref *)type)->prefixes));
+    assert_non_null(((struct lysc_type_leafref *)type)->realtype);
+    assert_int_equal(LY_TYPE_STRING, ((struct lysc_type_leafref *)type)->realtype->basetype);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module g {namespace urn:g;prefix g;"
+            "leaf source {type leafref {path \"/endpoint-parent[id=current()/../field]/endpoint/name\";}}"
+            "leaf field {type int32;}list endpoint-parent {key id;leaf id {type int32;}"
+            "list endpoint {key name;leaf name {type string;}}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_int_equal(LY_TYPE_LEAFREF, type->basetype);
+    assert_string_equal("/endpoint-parent[id=current()/../field]/endpoint/name", ((struct lysc_type_leafref *)type)->path->expr);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_type_leafref *)type)->prefixes));
+    assert_non_null(((struct lysc_type_leafref *)type)->realtype);
+    assert_int_equal(LY_TYPE_STRING, ((struct lysc_type_leafref *)type)->realtype->basetype);
+
+    /* leafref to imported (not yet implemented) module */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module h-imp {namespace urn:h-imp;prefix h-imp;"
+            "leaf l {type string;}}", LYS_IN_YANG, NULL));
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module h {namespace urn:h;prefix h;import h-imp {prefix hi;}"
+            "leaf h {type uint16;}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module i {namespace urn:i;prefix i;import h {prefix h;}"
+            "leaf i {type leafref {path /h:h;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_LEAFREF, type->basetype);
+    assert_non_null(((struct lysc_type_leafref *)type)->realtype);
+    assert_int_equal(LY_TYPE_UINT16, ((struct lysc_type_leafref *)type)->realtype->basetype);
+    assert_non_null(mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "h"));
+    assert_int_equal(1, mod->implemented);
+    assert_non_null(mod->compiled->data);
+    assert_string_equal("h", mod->compiled->data->name);
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module j {namespace urn:j;prefix j; leaf j  {type string;}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module k {namespace urn:k;prefix k;import j {prefix j;}"
+            "leaf i {type leafref {path \"/ilist[name = current()/../j:j]/value\";}}"
+            "list ilist {key name; leaf name {type string;} leaf value {type uint16;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_LEAFREF, type->basetype);
+    assert_non_null(((struct lysc_type_leafref *)type)->realtype);
+    assert_int_equal(LY_TYPE_UINT16, ((struct lysc_type_leafref *)type)->realtype->basetype);
+    assert_non_null(mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "j"));
+    assert_int_equal(1, mod->implemented);
+    assert_non_null(mod->compiled->data);
+    assert_string_equal("j", mod->compiled->data->name);
+
+    /* leafref with a default value */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module l {namespace urn:l;prefix l;"
+            "leaf source {type leafref {path \"../target\";}default true;}"
+            "leaf target {type boolean;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_int_equal(LY_TYPE_LEAFREF, type->basetype);
+    assert_string_equal("../target", ((struct lysc_type_leafref *)type)->path->expr);
+    assert_non_null(((struct lysc_type_leafref *)type)->realtype);
+    assert_int_equal(LY_TYPE_BOOL, ((struct lysc_type_leafref *)type)->realtype->basetype);
+    assert_non_null(((struct lysc_node_leaf *)mod->compiled->data)->dflt);
+    assert_int_equal(LY_TYPE_BOOL, ((struct lysc_node_leaf *)mod->compiled->data)->dflt->realtype->basetype);
+    assert_int_equal(1, ((struct lysc_node_leaf *)mod->compiled->data)->dflt->boolean);
+
+    /* invalid paths */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;container a {leaf target2 {type uint8;}}"
+            "leaf ref1 {type leafref {path ../a/invalid;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Not found node \"invalid\" in path.", "Schema location \"/aa:ref1\".");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb;container a {leaf target2 {type uint8;}}"
+            "leaf ref1 {type leafref {path ../../toohigh;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Too many parent references in path.", "Schema location \"/bb:ref1\".");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module cc {namespace urn:cc;prefix cc;container a {leaf target2 {type uint8;}}"
+            "leaf ref1 {type leafref {path /a:invalid;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("No module connected with the prefix \"a\" found (prefix format schema stored mapping).", "Schema location \"/cc:ref1\".");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module dd {namespace urn:dd;prefix dd;leaf target1 {type string;}"
+            "container a {leaf target2 {type uint8;}} leaf ref1 {type leafref {"
+            "path '/a[target2 = current()/../target1]/target2';}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("List predicate defined for container \"a\" in path.", "Schema location \"/dd:ref1\".");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ee {namespace urn:ee;prefix ee;\n  container a {leaf target2 {type uint8;}}\n"
+            "leaf ref1 {type leafref {path /a!invalid;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"ee\" failed.", NULL,
+            "Invalid character 0x21 ('!'), perhaps \"a\" is supposed to be a function call.", "Line number 3.");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff {namespace urn:ff;prefix ff;container a {leaf target2 {type uint8;}}"
+            "leaf ref1 {type leafref {path /a;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid leafref path \"/a\" - target node is container instead of leaf or leaf-list.", "Schema location \"/ff:ref1\".");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg {namespace urn:gg;prefix gg;container a {leaf target2 {type uint8;"
+            "status deprecated;}} leaf ref1 {type leafref {path /a/target2;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("A current definition \"ref1\" is not allowed to reference deprecated definition \"target2\".",
+            "Schema location \"/gg:ref1\".");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module hh {namespace urn:hh;prefix hh;"
+            "leaf ref1 {type leafref;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Missing path substatement for leafref type.", "/hh:ref1");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ii {namespace urn:ii;prefix ii;typedef mytype {type leafref;}"
+            "leaf ref1 {type mytype;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Missing path substatement for leafref type mytype.", "/ii:ref1");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module kk {namespace urn:kk;prefix kk;"
+            "leaf ref {type leafref {path /target;}}leaf target {type string;config false;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid leafref path \"/target\" - target is supposed to represent configuration data (as the leafref does), but it does not.", "Schema location \"/kk:ref\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ll {namespace urn:ll;prefix ll;"
+            "leaf ref {type leafref {path /target; require-instance true;}}leaf target {type string;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Leafref type can be restricted by require-instance statement only in YANG 1.1 modules.", "/ll:ref");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm {namespace urn:mm;prefix mm;typedef mytype {type leafref {path /target;require-instance false;}}"
+            "leaf ref {type mytype;}leaf target {type string;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Leafref type \"mytype\" can be restricted by require-instance statement only in YANG 1.1 modules.", "/mm:ref");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module nn {namespace urn:nn;prefix nn;\n"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}\n"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}\n"
+            "leaf address {type leafref{\n path \"/interface[name is current()/../ifname]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"nn\" failed.", NULL,
+            "Invalid character 0x69 ('i'), perhaps \"name\" is supposed to be a function call.", "Line number 5.");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module oo {namespace urn:oo;prefix oo;\n"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}\n"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}\n"
+            "leaf address {type leafref{\n path \"/interface[name=current()/../ifname/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"oo\" failed.", NULL,
+            "Unexpected XPath expression end.", "Line number 5.");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module pp {namespace urn:pp;prefix pp;"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}"
+            "leaf address {type leafref{ path \"/interface[x:name=current()/../ifname]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("No module connected with the prefix \"x\" found (prefix format schema stored mapping).",
+            "Schema location \"/pp:address\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module qq {namespace urn:qq;prefix qq;"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}"
+            "leaf address {type leafref{ path \"/interface[id=current()/../ifname]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Not found node \"id\" in path.", "Schema location \"/qq:address\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module rr {namespace urn:rr;prefix rr;\n"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}\n"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}leaf test{type string;}\n"
+            "leaf address {type leafref{ path \"/interface[name=current() /  .. / ifname][name=current()/../test]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"rr\" failed.", NULL,
+            "Duplicate predicate key \"name\" in path.", "Line number 4.");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ss {namespace urn:ss;prefix ss;\n"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}\n"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}leaf test{type string;}\n"
+            "leaf address {type leafref{ path \"/interface[name = ../ifname]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"ss\" failed.", NULL,
+            "Unexpected XPath token \"..\" (\"../ifname]/ip\"), expected \"FunctionName\".", "Line number 4.");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module tt {namespace urn:tt;prefix tt;\n"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}\n"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}leaf test{type string;}\n"
+            "leaf address {type leafref{ path \"/interface[name = current()../ifname]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"tt\" failed.", NULL,
+            "Unexpected XPath token \"..\" (\"../ifname]/ip\"), expected \"]\".", "Line number 4.");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module uu {namespace urn:uu;prefix uu;\n"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}\n"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}leaf test{type string;}\n"
+            "leaf address {type leafref{ path \"/interface[name = current()/..ifname]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"uu\" failed.", NULL,
+            "Invalid character 'i'[31] of expression '/interface[name = current()/..ifname]/ip'.", "Line number 4.");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module vv {namespace urn:vv;prefix vv;\n"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}\n"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}leaf test{type string;}\n"
+            "leaf address {type leafref{ path \"/interface[name = current()/ifname]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"vv\" failed.", NULL,
+            "Unexpected XPath token \"NameTest\" (\"ifname]/ip\"), expected \"..\".", "Line number 4.");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ww {namespace urn:ww;prefix ww;\n"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}\n"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}leaf test{type string;}\n"
+            "leaf address {type leafref{ path \"/interface[name = current()/../]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"ww\" failed.", NULL,
+            "Unexpected XPath token \"]\" (\"]/ip\").", "Line number 4.");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module xx {namespace urn:xx;prefix xx;\n"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}\n"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}leaf test{type string;}\n"
+            "leaf address {type leafref{ path \"/interface[name = current()/../#node]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Parsing module \"xx\" failed.", NULL,
+            "Invalid character '#'[32] of expression '/interface[name = current()/../#node]/ip'.", "Line number 4.");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module yy {namespace urn:yy;prefix yy;\n"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}\n"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}\n"
+            "leaf address {type leafref{ path \"/interface[name=current()/../x:ifname]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("No module connected with the prefix \"x\" found (prefix format schema stored mapping).",
+            "Schema location \"/yy:address\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module zz {namespace urn:zz;prefix zz;\n"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}\n"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}\n"
+            "leaf address {type leafref{ path \"/interface[name=current()/../xxx]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Not found node \"xxx\" in path.", "Schema location \"/zz:address\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module zza {namespace urn:zza;prefix zza;\n"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}}\n"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}container c;\n"
+            "leaf address {type leafref{ path \"/interface[name=current()/../c]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Leaf expected instead of container \"c\" in leafref predicate in path.", "Schema location \"/zza:address\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module zzb {namespace urn:zzb;prefix zzb;\n"
+            "list interface{key name;leaf name{type string;}leaf ip {type string;}container c;}\n"
+            "leaf ifname{type leafref{ path \"../interface/name\";}}\n"
+            "leaf address {type leafref{ path \"/interface[c=current()/../ifname]/ip\";}}}",
+            LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Key expected instead of container \"c\" in path.", "Schema location \"/zzb:address\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module zzc {namespace urn:zzc;prefix zzc;\n"
+            "leaf source {type leafref {path \"../target\";}default true;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Not found node \"target\" in path.", "Schema location \"/zzc:source\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module zzd {namespace urn:zzd;prefix zzd;\n"
+            "leaf source {type leafref {path \"../target\";}default true;}\n"
+            "leaf target {type uint8;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Invalid type uint8 value \"true\".).",
+            "Schema location \"/zzd:source\".");
+
+    /* circular chain */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aaa {namespace urn:aaa;prefix aaa;\n"
+            "leaf ref1 {type leafref {path /ref2;}}\n"
+            "leaf ref2 {type leafref {path /ref3;}}\n"
+            "leaf ref3 {type leafref {path /ref4;}}\n"
+            "leaf ref4 {type leafref {path /ref1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid leafref path \"/ref1\" - circular chain of leafrefs detected.", "Schema location \"/aaa:ref4\".");
+}
+
+static void
+test_type_empty(void **state)
+{
+    /* invalid */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;"
+            "leaf l {type empty; default x;}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Invalid empty value length 1.).", "Schema location \"/aa:l\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb;typedef mytype {type empty; default x;}"
+            "leaf l {type mytype;}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Invalid type \"mytype\" - \"empty\" type must not have a default value (x).", "/bb:l");
+}
+
+static void
+test_type_union(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_type *type;
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {yang-version 1.1;namespace urn:a;prefix a; typedef mybasetype {type string;}"
+            "typedef mytype {type union {type int8; type mybasetype;}}"
+            "leaf l {type mytype;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(2, type->refcount);
+    assert_int_equal(LY_TYPE_UNION, type->basetype);
+    assert_non_null(((struct lysc_type_union *)type)->types);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_union *)type)->types));
+    assert_int_equal(LY_TYPE_INT8, ((struct lysc_type_union *)type)->types[0]->basetype);
+    assert_int_equal(LY_TYPE_STRING, ((struct lysc_type_union *)type)->types[1]->basetype);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {yang-version 1.1;namespace urn:b;prefix b; typedef mybasetype {type string;}"
+            "typedef mytype {type union {type int8; type mybasetype;}}"
+            "leaf l {type union {type decimal64 {fraction-digits 2;} type mytype;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_int_equal(LY_TYPE_UNION, type->basetype);
+    assert_non_null(((struct lysc_type_union *)type)->types);
+    assert_int_equal(3, LY_ARRAY_COUNT(((struct lysc_type_union *)type)->types));
+    assert_int_equal(LY_TYPE_DEC64, ((struct lysc_type_union *)type)->types[0]->basetype);
+    assert_int_equal(LY_TYPE_INT8, ((struct lysc_type_union *)type)->types[1]->basetype);
+    assert_int_equal(LY_TYPE_STRING, ((struct lysc_type_union *)type)->types[2]->basetype);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {yang-version 1.1;namespace urn:c;prefix c; typedef mybasetype {type string;}"
+            "typedef mytype {type union {type leafref {path ../target;} type mybasetype;}}"
+            "leaf l {type union {type decimal64 {fraction-digits 2;} type mytype;}}"
+            "leaf target {type leafref {path ../realtarget;}} leaf realtarget {type int8;}}",
+            LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_int_equal(LY_TYPE_UNION, type->basetype);
+    assert_non_null(((struct lysc_type_union *)type)->types);
+    assert_int_equal(3, LY_ARRAY_COUNT(((struct lysc_type_union *)type)->types));
+    assert_int_equal(LY_TYPE_DEC64, ((struct lysc_type_union *)type)->types[0]->basetype);
+    assert_int_equal(LY_TYPE_LEAFREF, ((struct lysc_type_union *)type)->types[1]->basetype);
+    assert_int_equal(LY_TYPE_STRING, ((struct lysc_type_union *)type)->types[2]->basetype);
+    assert_non_null(((struct lysc_type_leafref *)((struct lysc_type_union *)type)->types[1])->realtype);
+    assert_int_equal(LY_TYPE_INT8, ((struct lysc_type_leafref *)((struct lysc_type_union *)type)->types[1])->realtype->basetype);
+
+    /* invalid unions */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;typedef mytype {type union;}"
+            "leaf l {type mytype;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Missing type substatement for union type mytype.", "/aa:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb;leaf l {type union;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Missing type substatement for union type.", "/bb:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module cc {namespace urn:cc;prefix cc;typedef mytype {type union{type int8; type string;}}"
+            "leaf l {type mytype {type string;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid type substatement for the type not directly derived from union built-in type.", "/cc:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module dd {namespace urn:dd;prefix dd;typedef mytype {type union{type int8; type string;}}"
+            "typedef mytype2 {type mytype {type string;}}leaf l {type mytype2;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid type substatement for the type \"mytype2\" not directly derived from union built-in type.", "/dd:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ee {namespace urn:ee;prefix ee;typedef mytype {type union{type mytype; type string;}}"
+            "leaf l {type mytype;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid \"mytype\" type reference - circular chain of types detected.", "/ee:l");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ef {namespace urn:ef;prefix ef;typedef mytype {type mytype2;}"
+            "typedef mytype2 {type mytype;} leaf l {type mytype;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid \"mytype\" type reference - circular chain of types detected.", "/ef:l");
+}
+
+static void
+test_type_dflt(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_type *type;
+    struct lysc_node_leaf *leaf;
+    uint8_t dynamic;
+
+    /* default is not inherited from union's types */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a; typedef mybasetype {type string;default hello;units xxx;}"
+            "leaf l {type union {type decimal64 {fraction-digits 2;} type mybasetype;}}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(1, type->refcount);
+    assert_int_equal(LY_TYPE_UNION, type->basetype);
+    assert_non_null(((struct lysc_type_union *)type)->types);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_type_union *)type)->types));
+    assert_int_equal(LY_TYPE_DEC64, ((struct lysc_type_union *)type)->types[0]->basetype);
+    assert_int_equal(LY_TYPE_STRING, ((struct lysc_type_union *)type)->types[1]->basetype);
+    assert_null(((struct lysc_node_leaf *)mod->compiled->data)->dflt);
+    assert_null(((struct lysc_node_leaf *)mod->compiled->data)->units);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b; typedef mybasetype {type string;default hello;units xxx;}"
+            "leaf l {type mybasetype;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(3, type->refcount);     /* 2x type reference, 1x default value's reference (typedf's default does not reference own type)*/
+    assert_int_equal(LY_TYPE_STRING, type->basetype);
+    assert_non_null(leaf = (struct lysc_node_leaf *)mod->compiled->data);
+    assert_string_equal("hello", leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_string_equal("xxx", leaf->units);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {namespace urn:c;prefix c; typedef mybasetype {type string;default hello;units xxx;}"
+            "leaf l {type mybasetype; default goodbye;units yyy;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(3, type->refcount);     /* 2x type reference, 1x default value's reference */
+    assert_int_equal(LY_TYPE_STRING, type->basetype);
+    leaf = (struct lysc_node_leaf *)mod->compiled->data;
+    assert_string_equal("goodbye", leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_string_equal("yyy", leaf->units);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module d {namespace urn:d;prefix d; typedef mybasetype {type string;default hello;units xxx;}"
+            "typedef mytype {type mybasetype;}leaf l1 {type mytype; default goodbye;units yyy;}"
+            "leaf l2 {type mytype;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(6, type->refcount);     /* 4x type reference, 2x default value's reference (1 shared compiled type of typedefs which default does not reference own type) */
+    assert_int_equal(LY_TYPE_STRING, type->basetype);
+    leaf = (struct lysc_node_leaf *)mod->compiled->data;
+    assert_string_equal("goodbye", leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_string_equal("yyy", leaf->units);
+    type = ((struct lysc_node_leaf *)mod->compiled->data->next)->type;
+    assert_non_null(type);
+    assert_int_equal(6, type->refcount);     /* 4x type reference, 2x default value's reference (1 shared compiled type of typedefs which default does not reference own type) */
+    assert_int_equal(LY_TYPE_STRING, type->basetype);
+    leaf = (struct lysc_node_leaf *)mod->compiled->data->next;
+    assert_string_equal("hello", leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_string_equal("xxx", leaf->units);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module e {namespace urn:e;prefix e; typedef mybasetype {type string;}"
+            "typedef mytype {type mybasetype; default hello;units xxx;}leaf l {type mytype;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(4, type->refcount);     /* 3x type reference, 1x default value's reference (typedef's default does not reference own type) */
+    assert_int_equal(LY_TYPE_STRING, type->basetype);
+    leaf = (struct lysc_node_leaf *)mod->compiled->data;
+    assert_string_equal("hello", leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_string_equal("xxx", leaf->units);
+
+    /* mandatory leaf does not takes default value from type */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module f {namespace urn:f;prefix f;typedef mytype {type string; default hello;units xxx;}"
+            "leaf l {type mytype; mandatory true;}}", LYS_IN_YANG, &mod));
+    type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    assert_non_null(type);
+    assert_int_equal(LY_TYPE_STRING, type->basetype);
+    assert_null(((struct lysc_node_leaf *)mod->compiled->data)->dflt);
+    assert_string_equal("xxx", ((struct lysc_node_leaf *)mod->compiled->data)->units);
+}
+
+static void
+test_status(void **state)
+{
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;"
+            "container c {status deprecated; leaf l {status current; type string;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Status \"current\" of \"l\" is in conflict with \"deprecated\" status of parent \"c\".", "/aa:c/l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb;"
+            "container c {status obsolete; leaf l {status current; type string;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Status \"current\" of \"l\" is in conflict with \"obsolete\" status of parent \"c\".", "/bb:c/l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module cc {namespace urn:cc;prefix cc;"
+            "container c {status obsolete; leaf l {status deprecated; type string;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Status \"deprecated\" of \"l\" is in conflict with \"obsolete\" status of parent \"c\".", "/cc:c/l");
+
+    /* just a warning */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module cc {namespace urn:dd;prefix d;"
+            "container c {leaf l {status obsolete; type string;}}"
+            "container d {leaf m {when \"../../c/l\"; type string;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("When condition \"../../c/l\" may be referencing deprecated node \"l\".", NULL);
+}
+
+static void
+test_grouping(void **state)
+{
+    /* result ok, but a warning about not used locally scoped grouping printed */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a; grouping grp1 {leaf a1 {type string;}}"
+            "container a {leaf x {type string;} grouping grp2 {leaf a2 {type string;}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Locally scoped grouping \"grp2\" not used.", NULL);
+    UTEST_LOG_CLEAN;
+
+    /* result ok - when statement or leafref target must be checked only at the place where the grouping is really instantiated */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b; grouping grp {"
+            "leaf ref {type leafref {path \"../name\";}}"
+            "leaf cond {type string; when \"../name = 'specialone'\";}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX(NULL, NULL);
+
+    /* invalid - error in a non-instantiated grouping */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;"
+            "grouping grp {leaf x {type leafref;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Missing path substatement for leafref type.", "/aa:{grouping='grp'}/x");
+    UTEST_LOG_CLEAN;
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;"
+            "container a {grouping grp {leaf x {type leafref;}}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Missing path substatement for leafref type.", "/aa:a/{grouping='grp'}/x");
+
+    /* config check */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module z1 {namespace urn:z1;prefix z1;"
+            "container root;}\n"
+            "module z2 {namespace urn:z2;prefix z2;"
+            "grouping leafs_group {"
+            "  leaf name {type string; config true;}"
+            "  leaf value {type uint32; config true;}"
+            "}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module z3 {namespace urn:z3;prefix z3;"
+            "import z1 {prefix z1;} import z2 {prefix z2;}"
+            "grouping grp_a_top {leaf a1 {type int8;}}"
+            "grouping list_group {"
+            "  list mylist {key \"name\"; unique \"value\"; uses z2:leafs_group;}"
+            "}"
+            "augment /z1:root { uses list_group;} }", LYS_IN_YANG, NULL));
+
+    /* identity */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module y1 {namespace urn:y1;prefix y1;"
+            "identity base_identity;"
+            "identity id1 {base \"base_identity\";}"
+            "grouping attrs_group {"
+            "  leaf name {type identityref {base \"base_identity\";} default \"id1\";}"
+            "}}", LYS_IN_YANG, NULL));
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module y2 {namespace urn:y2;prefix y2;"
+            "import y1 {prefix y1;}"
+            "container root {uses y1:attrs_group;}}", LYS_IN_YANG, NULL));
+}
+
+static void
+test_uses(void **state)
+{
+    struct lys_module *mod;
+    const struct lysc_node *parent, *child;
+    const struct lysc_node_container *cont;
+    const struct lysc_node_leaf *leaf;
+    const struct lysc_node_choice *choice;
+    const struct lysc_node_case *cs;
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module grp {namespace urn:grp;prefix g; typedef mytype {type string;} feature f;"
+            "grouping grp {leaf x {type mytype;} leaf y {type string; if-feature f;}}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a {namespace urn:a;prefix a;import grp {prefix g;}"
+            "grouping grp_a_top {leaf a1 {type int8;}}"
+            "container a {uses grp_a; uses grp_a_top; uses g:grp; grouping grp_a {leaf a2 {type uint8;}}}}", LYS_IN_YANG, &mod));
+    assert_non_null((parent = mod->compiled->data));
+    assert_int_equal(LYS_CONTAINER, parent->nodetype);
+    assert_non_null((child = ((struct lysc_node_container *)parent)->child));
+    assert_string_equal("a2", child->name);
+    assert_ptr_equal(mod, child->module);
+    assert_non_null((child = child->next));
+    assert_string_equal("a1", child->name);
+    assert_ptr_equal(mod, child->module);
+    assert_non_null((child = child->next));
+    assert_string_equal("x", child->name);
+    assert_ptr_equal(mod, child->module);
+    assert_null((child = child->next));
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule bsub {belongs-to b {prefix b;} grouping grp {leaf b {when 1; type string;} leaf c {type string;}}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b;include bsub;uses grp {when 2;}}", LYS_IN_YANG, &mod));
+    assert_non_null(mod->compiled->data);
+
+    leaf = (struct lysc_node_leaf *)mod->compiled->data;
+    assert_int_equal(LYS_LEAF, leaf->nodetype);
+    assert_string_equal("b", leaf->name);
+    assert_int_equal(2, LY_ARRAY_COUNT(leaf->when));
+    assert_int_equal(1, leaf->when[0]->refcount);
+    assert_non_null(leaf->when[0]->context);
+    assert_string_equal("b", leaf->when[0]->context->name);
+    assert_int_equal(2, leaf->when[1]->refcount);
+    assert_null(leaf->when[1]->context);
+
+    leaf = (struct lysc_node_leaf *)leaf->next;
+    assert_int_equal(LYS_LEAF, leaf->nodetype);
+    assert_string_equal("c", leaf->name);
+    assert_int_equal(1, LY_ARRAY_COUNT(leaf->when));
+    assert_int_equal(2, leaf->when[0]->refcount);
+    assert_null(leaf->when[0]->context);
+
+    UTEST_LOG_CLEAN;
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {namespace urn:c;prefix c;"
+            "grouping grp {leaf l {type string;}leaf k {type string; status obsolete;}}"
+            "uses grp {status deprecated;}}", LYS_IN_YANG, &mod));
+    assert_int_equal(LYS_LEAF, mod->compiled->data->nodetype);
+    assert_string_equal("l", mod->compiled->data->name);
+    assert_true(LYS_STATUS_DEPRC & mod->compiled->data->flags);
+    assert_int_equal(LYS_LEAF, mod->compiled->data->next->nodetype);
+    assert_string_equal("k", mod->compiled->data->next->name);
+    assert_true(LYS_STATUS_OBSLT & mod->compiled->data->next->flags);
+    CHECK_LOG(NULL, NULL);     /* no warning about inheriting deprecated flag from uses */
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module d {namespace urn:d;prefix d; grouping grp {container g;}"
+            "container top {uses grp {augment g {leaf x {type int8;}}}}}", LYS_IN_YANG, &mod));
+    assert_non_null(mod->compiled->data);
+    assert_non_null(child = lysc_node_child(mod->compiled->data));
+    assert_string_equal("g", child->name);
+    assert_non_null(child = lysc_node_child(child));
+    assert_string_equal("x", child->name);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module e {yang-version 1.1;namespace urn:e;prefix e; grouping grp {action g { description \"super g\";}}"
+            "container top {action e; uses grp {refine g {description \"ultra g\";}}}}", LYS_IN_YANG, &mod));
+    assert_non_null(mod->compiled->data);
+    cont = (const struct lysc_node_container *)mod->compiled->data;
+    assert_non_null(cont->actions);
+    assert_non_null(cont->actions->next);
+    assert_null(cont->actions->next->next);
+    assert_string_equal("e", cont->actions->next->name);
+    assert_string_equal("g", cont->actions->name);
+    assert_string_equal("ultra g", cont->actions->dsc);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module f {yang-version 1.1;namespace urn:f;prefix f; grouping grp {notification g { description \"super g\";}}"
+            "container top {notification f; uses grp {refine g {description \"ultra g\";}}}}", LYS_IN_YANG, &mod));
+    assert_non_null(mod->compiled->data);
+    cont = (const struct lysc_node_container *)mod->compiled->data;
+    assert_non_null(cont->notifs);
+    assert_non_null(cont->notifs->next);
+    assert_null(cont->notifs->next->next);
+    assert_string_equal("f", cont->notifs->next->name);
+    assert_string_equal("g", cont->notifs->name);
+    assert_string_equal("ultra g", cont->notifs->dsc);
+
+    /* empty grouping */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module g {namespace urn:g;prefix g; grouping grp; uses grp;}", LYS_IN_YANG, &mod));
+    assert_null(mod->compiled->data);
+
+    /* choice in uses */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module h {yang-version 1.1;namespace urn:h;prefix h; grouping grp {choice gch {case gc1 { leaf y { type string;}} case gc2 {leaf z {type string;}}}}"
+            "choice ch {case one { leaf x {type string;}} case two { uses grp;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(mod->compiled->data);
+    choice = (const struct lysc_node_choice *)mod->compiled->data;
+    assert_string_equal("ch", choice->name);
+    cs = choice->cases;
+    assert_non_null(cs);
+    assert_string_equal("one", cs->name);
+    assert_non_null(cs->child);
+    assert_string_equal("x", cs->child->name);
+
+    cs = (struct lysc_node_case *)cs->next;
+    assert_non_null(cs);
+    assert_string_equal("two", cs->name);
+    assert_non_null(cs->child);
+    assert_string_equal("gch", cs->child->name);
+
+    /* top-level uses with augment and refine */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module i {namespace urn:i;prefix i; grouping grp {container g;}"
+            "uses grp {augment g {leaf x {type int8;}} refine g {description \"dsc\";}}}",
+            LYS_IN_YANG, &mod));
+    assert_non_null(mod->compiled->data);
+    child = mod->compiled->data;
+    assert_string_equal("g", child->name);
+    cont = (const struct lysc_node_container *)child;
+    assert_string_equal("dsc", cont->dsc);
+    assert_non_null(child = lysc_node_child(child));
+    assert_string_equal("x", child->name);
+
+    /* unique */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module j {namespace urn:j;prefix j;"
+            "grouping grp {list l {key \"k\"; unique \"l\"; leaf k {type string;} leaf l {type string;}}}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module k {namespace urn:k;prefix k;import j {prefix j;}"
+            "container a {uses j:grp;}}", LYS_IN_YANG, NULL));
+
+    /* if-features */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module l {namespace urn:l;prefix l;"
+            "feature f;"
+            "grouping grp {container g; leaf l{type string;}}"
+            "uses grp {if-feature f;}}",
+            LYS_IN_YANG, &mod));
+    assert_null(mod->compiled->data);
+
+    /* invalid */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;uses missinggrp;}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Grouping \"missinggrp\" referenced by a uses statement not found.", "/aa:{uses='missinggrp'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb;uses grp;"
+            "grouping grp {leaf a{type string;}uses grp1;}"
+            "grouping grp1 {leaf b {type string;}uses grp2;}"
+            "grouping grp2 {leaf c {type string;}uses grp;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Grouping \"grp\" references itself through a uses statement.", "/bb:{uses='grp'}/{uses='grp1'}/{uses='grp2'}/{uses='grp'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module cc {namespace urn:cc;prefix cc;uses a:missingprefix;}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid prefix used for grouping \"a:missingprefix\" reference.", "/cc:{uses='a:missingprefix'}");
+
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module dd {namespace urn:dd;prefix dd;grouping grp{leaf a{type string;}}"
+            "leaf a {type string;}uses grp;}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Duplicate identifier \"a\" of data definition/RPC/action/notification statement.", "/dd:{uses='grp'}/dd:a");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ee {namespace urn:ee;prefix ee;grouping grp {leaf l {type string; status deprecated;}}"
+            "uses grp {status obsolete;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Inherited schema-only status \"obsolete\" is in conflict with \"deprecated\" status of \"l\".",
+            "/ee:{uses='grp'}/ee:l");
+
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module ff {namespace urn:ff;prefix ff;grouping grp {leaf l {type string;}}"
+            "leaf l {type int8;}uses grp;}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Duplicate identifier \"l\" of data definition/RPC/action/notification statement.", "/ff:{uses='grp'}/ff:l");
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module fg {namespace urn:fg;prefix fg;grouping grp {leaf m {type string;}}"
+            "uses grp;leaf m {type int8;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Duplicate identifier \"m\" of data definition/RPC/action/notification statement.", "/fg:m");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg {namespace urn:gg;prefix gg; grouping grp {container g;}"
+            "leaf g {type string;}"
+            "container top {uses grp {augment /g {leaf x {type int8;}}}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid descendant-schema-nodeid value \"/g\" - name test expected instead of \"/\".", "/gg:top/{uses='grp'}/{augment='/g'}");
+
+    assert_int_equal(LY_ENOTFOUND, lys_parse_mem(UTEST_LYCTX, "module hh {yang-version 1.1;namespace urn:hh;prefix hh;"
+            "grouping grp {notification g { description \"super g\";}}"
+            "container top {notification h; uses grp {refine h {description \"ultra h\";}}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Refine(s) target node \"h\" in grouping \"grp\" was not found.", "/hh:top/{uses='grp'}");
+
+    assert_int_equal(LY_ENOTFOUND, lys_parse_mem(UTEST_LYCTX, "module ii {yang-version 1.1;namespace urn:ii;prefix ii;"
+            "grouping grp {action g { description \"super g\";}}"
+            "container top {action i; uses grp {refine i {description \"ultra i\";}}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Refine(s) target node \"i\" in grouping \"grp\" was not found.", "/ii:top/{uses='grp'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module jj {yang-version 1.1;namespace urn:jj;prefix jj;"
+            "grouping grp {leaf j { when \"1\"; type invalid;}}"
+            "container top {uses grp;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Referenced type \"invalid\" not found.", "/jj:top/{uses='grp'}/j");
+}
+
+static void
+test_refine(void **state)
+{
+    struct lys_module *mod;
+    struct lysc_node *parent, *child;
+    struct lysc_node_leaf *leaf;
+    struct lysc_node_leaflist *llist;
+    uint8_t dynamic;
+    struct ly_in *in;
+    const char *data, *feats1[] = {"f", NULL}, *feats2[] = {"fa", NULL};
+
+    data = "module grp {yang-version 1.1;namespace urn:grp;prefix g; feature f;typedef mytype {type string; default cheers!;}"
+            "grouping grp {container c {leaf l {type mytype; default goodbye;}"
+            "leaf-list ll {type mytype; default goodbye; max-elements 6;}"
+            "choice ch {default ca; leaf ca {type int8;}leaf cb{type uint8;}}"
+            "leaf x {type mytype; mandatory true; must 1;}"
+            "anydata a {mandatory false; if-feature f; description original; reference original;}"
+            "container c {config false; leaf l {type string;}}}}}";
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(data, &in));
+    assert_int_equal(LY_SUCCESS, lys_parse(UTEST_LYCTX, in, LYS_IN_YANG, feats1, NULL));
+
+    data = "module a {yang-version 1.1;namespace urn:a;prefix a;import grp {prefix g;}feature fa;"
+            "uses g:grp {refine c/l {default hello; config false;}"
+            "refine c/ll {default hello;default world;}"
+            "refine c/ch {default cb;config true; if-feature fa;}"
+            "refine c/x {mandatory false; must ../ll;description refined; reference refined;}"
+            "refine c/a {mandatory true; must 1; description refined; reference refined;}"
+            "refine c/ll {max-elements 5;}"
+            "refine c/c {config true;presence indispensable;}}}";
+    ly_in_memory(in, data);
+    assert_int_equal(LY_SUCCESS, lys_parse(UTEST_LYCTX, in, LYS_IN_YANG, feats2, &mod));
+    ly_in_free(in, 0);
+
+    assert_non_null((parent = mod->compiled->data));
+    assert_int_equal(LYS_CONTAINER, parent->nodetype);
+    assert_string_equal("c", parent->name);
+    assert_non_null((leaf = (struct lysc_node_leaf *)((struct lysc_node_container *)parent)->child));
+    assert_int_equal(LYS_LEAF, leaf->nodetype);
+    assert_string_equal("l", leaf->name);
+    assert_string_equal("hello", leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_int_equal(LYS_CONFIG_R, leaf->flags & LYS_CONFIG_MASK);
+    assert_non_null(llist = (struct lysc_node_leaflist *)leaf->next);
+    assert_int_equal(LYS_LEAFLIST, llist->nodetype);
+    assert_string_equal("ll", llist->name);
+    assert_int_equal(2, LY_ARRAY_COUNT(llist->dflts));
+    assert_string_equal("hello", llist->dflts[0]->realtype->plugin->print(UTEST_LYCTX, llist->dflts[0], LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_string_equal("world", llist->dflts[1]->realtype->plugin->print(UTEST_LYCTX, llist->dflts[1], LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_int_equal(5, llist->max);
+    assert_non_null(child = llist->next);
+    assert_int_equal(LYS_CHOICE, child->nodetype);
+    assert_string_equal("ch", child->name);
+    assert_string_equal("cb", ((struct lysc_node_choice *)child)->dflt->name);
+    assert_true(LYS_SET_DFLT & ((struct lysc_node_choice *)child)->dflt->flags);
+    assert_false(LYS_SET_DFLT & ((struct lysc_node_choice *)child)->cases[0].flags);
+    assert_non_null(leaf = (struct lysc_node_leaf *)child->next);
+    assert_int_equal(LYS_LEAF, leaf->nodetype);
+    assert_string_equal("x", leaf->name);
+    assert_false(LYS_MAND_TRUE & leaf->flags);
+    assert_string_equal("cheers!", leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_non_null(leaf->musts);
+    assert_int_equal(2, LY_ARRAY_COUNT(leaf->musts));
+    assert_string_equal("refined", leaf->dsc);
+    assert_string_equal("refined", leaf->ref);
+    assert_non_null(child = leaf->next);
+    assert_int_equal(LYS_ANYDATA, child->nodetype);
+    assert_string_equal("a", child->name);
+    assert_true(LYS_MAND_TRUE & child->flags);
+    assert_non_null(((struct lysc_node_anydata *)child)->musts);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_node_anydata *)child)->musts));
+    assert_string_equal("refined", child->dsc);
+    assert_string_equal("refined", child->ref);
+    assert_non_null(child = child->next);
+    assert_int_equal(LYS_CONTAINER, child->nodetype);
+    assert_string_equal("c", child->name);
+    assert_true(LYS_PRESENCE & child->flags);
+    assert_true(LYS_CONFIG_W & child->flags);
+    assert_true(LYS_CONFIG_W & ((struct lysc_node_container *)child)->child->flags);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {yang-version 1.1;namespace urn:b;prefix b;import grp {prefix g;}"
+            "uses g:grp {status deprecated; refine c/x {default hello; mandatory false;}}}", LYS_IN_YANG, &mod));
+    assert_non_null((leaf = (struct lysc_node_leaf *)((struct lysc_node_container *)mod->compiled->data)->child->prev->prev->prev));
+    assert_int_equal(LYS_LEAF, leaf->nodetype);
+    assert_string_equal("x", leaf->name);
+    assert_false(LYS_MAND_TRUE & leaf->flags);
+    assert_string_equal("hello", leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {namespace urn:c;prefix c;"
+            "grouping alg {leaf alg2 {type bits {"
+            "bit ftp;bit h323-q931;bit h323-ras;bit pptp;bit rtsp;bit sip-tcp;bit sip-udp;bit tftp;bit dns-udp;}}}"
+            "container conf {uses alg {refine alg2 {default \"dns-udp\";}}}}", LYS_IN_YANG, &mod));
+
+    /* invalid */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa;import grp {prefix g;}"
+            "uses g:grp {refine c {default hello;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid refine of container node - it is not possible to replace \"default\" property.", "/aa:{uses='g:grp'}/aa:c/{refine='c'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb;import grp {prefix g;}"
+            "uses g:grp {refine c/l {default hello; default world;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid refine of leaf with too many (2) default properties.", "/bb:{uses='g:grp'}/bb:c/l/{refine='c/l'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module cc {namespace urn:cc;prefix cc;import grp {prefix g;}"
+            "uses g:grp {refine c/ll {default hello; default world;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid refine of default in leaf-list - the default statement is allowed only in YANG 1.1 modules.", "/cc:{uses='g:grp'}/cc:c/ll/{refine='c/ll'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module dd {namespace urn:dd;prefix dd;import grp {prefix g;}"
+            "uses g:grp {refine c/ll {mandatory true;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid refine of leaf-list node - it is not possible to replace \"mandatory\" property.", "/dd:{uses='g:grp'}/dd:c/ll/{refine='c/ll'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ee {namespace urn:ee;prefix ee;import grp {prefix g;}"
+            "uses g:grp {refine c/l {mandatory true;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/ee:{uses='g:grp'}/ee:c/l",
+            "Invalid mandatory leaf with a default value.", "/ee:{uses='g:grp'}/ee:c/l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ef {namespace urn:ef;prefix ef;import grp {prefix g;}"
+            "uses g:grp {refine c/ch {mandatory true;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/ef:{uses='g:grp'}/ef:c/ch",
+            "Invalid mandatory choice with a default case.", "/ef:{uses='g:grp'}/ef:c/ch");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff {namespace urn:ff;prefix ff;import grp {prefix g;}"
+            "uses g:grp {refine c/ch/ca/ca {mandatory true;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Mandatory node \"ca\" under the default case \"ca\".", "/ff:{uses='g:grp'}/ff:c/ch");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg {namespace urn:gg;prefix gg;import grp {prefix g;}"
+            "uses g:grp {refine c/x {default hello;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/gg:{uses='g:grp'}/gg:c/x",
+            "Invalid mandatory leaf with a default value.", "/gg:{uses='g:grp'}/gg:c/x");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module hh {namespace urn:hh;prefix hh;import grp {prefix g;}"
+            "uses g:grp {refine c/c/l {config true;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/hh:{uses='g:grp'}/hh:c/c/l",
+            "Configuration node cannot be child of any state data node.", "/hh:{uses='g:grp'}/hh:c/c/l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ii {namespace urn:ii;prefix ii;grouping grp {leaf l {type string; status deprecated;}}"
+            "uses grp {status obsolete;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Inherited schema-only status \"obsolete\" is in conflict with \"deprecated\" status of \"l\".",
+            "/ii:{uses='grp'}/ii:l");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module jj {namespace urn:jj;prefix jj;import grp {prefix g;}"
+            "uses g:grp {refine c/x {presence nonsence;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid refine of leaf node - it is not possible to replace \"presence\" property.", "/jj:{uses='g:grp'}/jj:c/x/{refine='c/x'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module kk {namespace urn:kk;prefix kk;import grp {prefix g;}"
+            "uses g:grp {refine c/ch {must 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid refine of choice node - it is not possible to add \"must\" property.", "/kk:{uses='g:grp'}/kk:c/ch/{refine='c/ch'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ll {namespace urn:ll;prefix ll;import grp {prefix g;}"
+            "uses g:grp {refine c/x {min-elements 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid refine of leaf node - it is not possible to replace \"min-elements\" property.", "/ll:{uses='g:grp'}/ll:c/x/{refine='c/x'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm {namespace urn:mm;prefix mm;import grp {prefix g;}"
+            "uses g:grp {refine c/ll {min-elements 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/mm:{uses='g:grp'}/mm:c/ll",
+            "The default statement is present on leaf-list with a nonzero min-elements.", "/mm:{uses='g:grp'}/mm:c/ll");
+}
+
+static void
+test_augment(void **state)
+{
+    struct lys_module *mod;
+    const struct lysc_node *node;
+    const struct lysc_node_choice *ch;
+    const struct lysc_node_case *c;
+    const struct lysc_node_container *cont;
+    const struct lysc_node_action *rpc;
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module a {namespace urn:a;prefix a; typedef atype {type string;}"
+            "container top {leaf a {type string;}}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b;import a {prefix a;}"
+            "leaf b {type a:atype;}}", LYS_IN_YANG, &mod));
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module c {namespace urn:c;prefix c; import a {prefix a;}"
+            "augment /a:top { container c {leaf c {type a:atype;}}}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module d {namespace urn:d;prefix d;import a {prefix a;} import c {prefix c;}"
+            "augment /a:top/c:c { leaf d {type a:atype;} leaf c {type string;}}}", LYS_IN_YANG, &mod));
+    assert_non_null((mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "a")));
+    assert_non_null(ly_ctx_get_module_implemented(UTEST_LYCTX, "b"));
+    assert_non_null(ly_ctx_get_module_implemented(UTEST_LYCTX, "c"));
+    assert_non_null(ly_ctx_get_module_implemented(UTEST_LYCTX, "d"));
+    assert_non_null(node = mod->compiled->data);
+    assert_string_equal(node->name, "top");
+    assert_non_null(node = lysc_node_child(node));
+    assert_string_equal(node->name, "a");
+    assert_non_null(node = node->next);
+    assert_string_equal(node->name, "c");
+    assert_non_null(node = lysc_node_child(node));
+    assert_string_equal(node->name, "c");
+    assert_non_null(node = node->next);
+    assert_string_equal(node->name, "d");
+    assert_non_null(node = node->next);
+    assert_string_equal(node->name, "c");
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module e {namespace urn:e;prefix e;choice ch {leaf a {type string;}}"
+            "augment /ch/c {when 1; leaf lc2 {type uint16;}}"
+            "augment /ch { when 1; leaf b {type int8;} case c {leaf lc1 {type uint8;}}}}", LYS_IN_YANG, &mod));
+    assert_non_null((ch = (const struct lysc_node_choice *)mod->compiled->data));
+    assert_null(mod->compiled->data->next);
+    assert_string_equal("ch", ch->name);
+
+    assert_non_null(c = (const struct lysc_node_case *)ch->cases);
+    assert_string_equal("a", c->name);
+    assert_null(c->when);
+    assert_string_equal("a", c->child->name);
+
+    assert_non_null(c = (const struct lysc_node_case *)c->next);
+    assert_string_equal("b", c->name);
+    assert_non_null(c->when);
+    assert_string_equal("b", c->child->name);
+
+    assert_non_null(c = (const struct lysc_node_case *)c->next);
+    assert_string_equal("c", c->name);
+    assert_non_null(c->when);
+    assert_string_equal("lc1", ((const struct lysc_node_case *)c)->child->name);
+    assert_null(lysc_node_when(((const struct lysc_node_case *)c)->child));
+    assert_string_equal("lc2", ((const struct lysc_node_case *)c)->child->next->name);
+    assert_non_null(lysc_node_when(((const struct lysc_node_case *)c)->child->next));
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module f {namespace urn:f;prefix f;grouping g {leaf a {type string;}}"
+            "container c;"
+            "augment /c {uses g;}}", LYS_IN_YANG, &mod));
+    assert_non_null(node = lysc_node_child(mod->compiled->data));
+    assert_string_equal(node->name, "a");
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule gsub {belongs-to g {prefix g;}"
+            "augment /c {container sub;}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module g {namespace urn:g;prefix g;include gsub; container c;"
+            "augment /c/sub {leaf main {type string;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(mod->compiled->data);
+    assert_string_equal("c", mod->compiled->data->name);
+    assert_non_null(node = ((struct lysc_node_container *)mod->compiled->data)->child);
+    assert_string_equal("sub", node->name);
+    assert_non_null(node = ((struct lysc_node_container *)node)->child);
+    assert_string_equal("main", node->name);
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module himp {namespace urn:hi;prefix hi;container top; rpc func;}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module h {namespace urn:h;prefix h;import himp {prefix hi;}container top;"
+            "augment /hi:top {container p {presence XXX; leaf x {mandatory true;type string;}}}"
+            "augment /hi:top {list ll {key x;leaf x {type string;}leaf y {mandatory true; type string;}}}"
+            "augment /hi:top {leaf l {type string; mandatory true; config false;}}"
+            "augment /top {leaf l {type string; mandatory true;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(node = mod->compiled->data);
+    assert_non_null(node = ((struct lysc_node_container *)node)->child);
+    assert_string_equal("l", node->name);
+    assert_true(node->flags & LYS_MAND_TRUE);
+    assert_non_null(mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "himp"));
+    assert_non_null(node = mod->compiled->data);
+    assert_non_null(node = ((struct lysc_node_container *)node)->child);
+    assert_string_equal("p", node->name);
+    assert_non_null(node = node->next);
+    assert_string_equal("l", node->name);
+    assert_true(node->flags & LYS_CONFIG_R);
+    assert_non_null(node = node->next);
+    assert_string_equal("ll", node->name);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module i {namespace urn:i;prefix i;import himp {prefix hi;}"
+            "augment /hi:func/hi:input {leaf x {type string;}}"
+            "augment /hi:func/hi:output {leaf y {type string;}}}", LYS_IN_YANG, NULL));
+    assert_non_null(mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "himp"));
+    assert_non_null(rpc = mod->compiled->rpcs);
+    assert_null(rpc->next);
+    assert_non_null(rpc->input.child);
+    assert_string_equal("x", rpc->input.child->name);
+    assert_null(rpc->input.child->next);
+    assert_non_null(rpc->output.child);
+    assert_string_equal("y", rpc->output.child->name);
+    assert_null(rpc->output.child->next);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module j {namespace urn:j;prefix j;yang-version 1.1; container root;"
+            "grouping grp {notification grp-notif;}"
+            "augment /root {uses grp;}}", LYS_IN_YANG, &mod));
+    assert_non_null(cont = (const struct lysc_node_container *)mod->compiled->data);
+    assert_null(cont->child);
+    assert_non_null(cont->notifs);
+    assert_null(cont->notifs->next);
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, NULL, NULL);
+    UTEST_LOG_CLEAN;
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module k {namespace urn:k; prefix k;yang-version 1.1;"
+            "feature f;"
+            "container c {if-feature f; leaf a {type string;}}}", LYS_IN_YANG, &mod));
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module l {namespace urn:l; prefix l; yang-version 1.1;"
+            "import k {prefix k;}"
+            "augment /k:c {leaf b {type string;}}"
+            "leaf c {when \"/k:c/l:b\"; type string;}}", LYS_IN_YANG, NULL));
+    /* no xpath warning expected */
+    CHECK_LOG(NULL, NULL);
+    assert_null(mod->compiled->data);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module m {namespace urn:m;prefix m;yang-version 1.1;"
+            "feature f;"
+            "container root{container cont{if-feature f;}}"
+            "augment /root/cont {if-feature f; leaf l{type string;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(cont = (const struct lysc_node_container *)mod->compiled->data);
+    assert_null(cont->child);
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; container c {leaf a {type string;}}"
+            "augment /x/ {leaf a {type int8;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid absolute-schema-nodeid value \"/x/\" - unexpected end of expression.", "/aa:{augment='/x/'}");
+
+    assert_int_equal(LY_ENOTFOUND, lys_parse_mem(UTEST_LYCTX, "module aa {namespace urn:aa;prefix aa; container c {leaf a {type string;}}"
+            "augment /x {leaf a {type int8;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Augment target node \"/x\" from module \"aa\" was not found.", "/aa:{augment='/x'}");
+
+    assert_int_equal(LY_EEXIST, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb; container c {leaf a {type string;}}"
+            "augment /c {leaf a {type int8;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Duplicate identifier \"a\" of data definition/RPC/action/notification statement.", "/bb:{augment='/c'}/a");
+
+    assert_int_equal(LY_ENOTFOUND, lys_parse_mem(UTEST_LYCTX, "module cc {namespace urn:cc;prefix cc; container c {leaf a {type string;}}"
+            "augment /c/a {leaf a {type int8;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Augment target node \"/c/a\" from module \"cc\" was not found.", "/cc:{augment='/c/a'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module dd {namespace urn:dd;prefix dd; container c {leaf a {type string;}}"
+            "augment /c {case b {leaf d {type int8;}}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid augment of container node which is not allowed to contain case node \"b\".", "/dd:{augment='/c'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ee {namespace urn:ee;prefix ee; import himp {prefix hi;}"
+            "augment /hi:top {container c {leaf d {mandatory true; type int8;}}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid augment adding mandatory node \"c\" without making it conditional via when statement.", "/ee:{augment='/hi:top'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff {namespace urn:ff;prefix ff; container top;"
+            "augment ../top {leaf x {type int8;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid absolute-schema-nodeid value \"../top\" - \"/\" expected instead of \"..\".", "/ff:{augment='../top'}");
+
+    assert_int_equal(LY_ENOTFOUND, lys_parse_mem(UTEST_LYCTX, "module gg {namespace urn:gg;prefix gg; rpc func;"
+            "augment /func {leaf x {type int8;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Augment target node \"/func\" from module \"gg\" was not found.", "/gg:{augment='/func'}");
+
+    assert_int_equal(LY_ENOTFOUND, lys_parse_mem(UTEST_LYCTX, "module hh {namespace urn:hh;prefix hh;import himp {prefix hi;}"
+            "augment /hi:func/input {leaf x {type string;}}"
+            "augment /hi:func/output {leaf y {type string;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Augment target node \"/hi:func/input\" from module \"hh\" was not found.", "/hh:{augment='/hi:func/input'}");
+}
+
+static void
+test_deviation(void **state)
+{
+    struct lys_module *mod;
+    const struct lysc_node *node;
+    const struct lysc_node_list *list;
+    const struct lysc_node_leaflist *llist;
+    const struct lysc_node_leaf *leaf;
+    const char *str;
+    uint8_t dynamic;
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module a {namespace urn:a;prefix a;"
+            "container top {leaf a {type string;} leaf b {type string;} leaf c {type string;}}"
+            "choice ch {default c; case b {leaf b{type string;}} case a {leaf a{type string;} leaf x {type string;}}"
+            " case c {leaf c{type string;}}}"
+            "rpc func1 { input { leaf x {type int8;}} output {leaf y {type int8;}}}"
+            "rpc func2;}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module b {namespace urn:b;prefix b;import a {prefix a;}"
+            "deviation /a:top/a:b {deviate not-supported;}"
+            "deviation /a:ch/a:a/a:x {deviate not-supported;}"
+            "deviation /a:ch/a:c {deviate not-supported;}"
+            "deviation /a:ch/a:b {deviate not-supported;}"
+            "deviation /a:ch/a:a/a:a {deviate not-supported;}"
+            "deviation /a:ch {deviate replace {default a;}}"
+            "deviation /a:func1/a:input {deviate not-supported;}"
+            "deviation /a:func1/a:output {deviate not-supported;}"
+            "deviation /a:func2 {deviate not-supported;}}", LYS_IN_YANG, NULL));
+    assert_non_null((mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "a")));
+    assert_non_null(node = mod->compiled->data);
+    assert_string_equal(node->name, "top");
+    assert_non_null(node = lysc_node_child(node));
+    assert_string_equal(node->name, "a");
+    assert_non_null(node = node->next);
+    assert_string_equal(node->name, "c");
+    assert_null(node = node->next);
+    assert_non_null(node = mod->compiled->data->next);
+    assert_string_equal("ch", node->name);
+    assert_non_null(((struct lysc_node_choice *)node)->dflt);
+    assert_non_null(((struct lysc_node_choice *)node)->cases);
+    assert_null(((struct lysc_node_choice *)node)->cases->next);
+    assert_non_null(mod->compiled->rpcs);
+    assert_null(mod->compiled->rpcs->next);
+    assert_null(mod->compiled->rpcs->input.child);
+    assert_null(mod->compiled->rpcs->output.child);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module c {namespace urn:c;prefix c; typedef mytype {type string; units kilometers;}"
+            "leaf c1 {type mytype;} leaf c2 {type mytype; units meters;} leaf c3 {type mytype; units meters;}"
+            "deviation /c1 {deviate add {units meters;}}"
+            "deviation /c2 {deviate delete {units meters;}}"
+            "deviation /c3 {deviate replace {units centimeters;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(node = mod->compiled->data);
+    assert_string_equal("c1", node->name);
+    assert_string_equal("meters", ((struct lysc_node_leaf *)node)->units);
+    assert_non_null(node = node->next);
+    assert_string_equal("c2", node->name);
+    assert_string_equal("kilometers", ((struct lysc_node_leaf *)node)->units);
+    assert_non_null(node = node->next);
+    assert_string_equal("c3", node->name);
+    assert_string_equal("centimeters", ((struct lysc_node_leaf *)node)->units);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module d {namespace urn:d;prefix d; leaf c1 {type string; must 1;}"
+            "container c2 {presence yes; must 1; must 2;} leaf c3 {type string; must 1; must 3;}"
+            "deviation /c1 {deviate add {must 3;}}"
+            "deviation /c2 {deviate delete {must 2;}}"
+            "deviation /c3 {deviate delete {must 3; must 1;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(node = mod->compiled->data);
+    assert_string_equal("c1", node->name);
+    assert_int_equal(2, LY_ARRAY_COUNT(((struct lysc_node_leaf *)node)->musts));
+    assert_string_equal("3", ((struct lysc_node_leaf *)node)->musts[1].cond->expr);
+    assert_non_null(node = node->next);
+    assert_string_equal("c2", node->name);
+    assert_int_equal(1, LY_ARRAY_COUNT(((struct lysc_node_container *)node)->musts));
+    assert_string_equal("1", ((struct lysc_node_container *)node)->musts[0].cond->expr);
+    assert_non_null(node = node->next);
+    assert_string_equal("c3", node->name);
+    assert_null(((struct lysc_node_leaf *)node)->musts);
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module e {yang-version 1.1; namespace urn:e;prefix e; typedef mytype {type string; default nothing;}"
+            "choice a {default aa;leaf aa {type string;} leaf ab {type string;} leaf ac {type string; mandatory true;}}"
+            "choice b {default ba;leaf ba {type string;} leaf bb {type string;}}"
+            "leaf c {default hello; type string;}"
+            "leaf-list d {default hello; default world; type string;}"
+            "leaf c2 {type mytype;} leaf-list d2 {type mytype;}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module f {yang-version 1.1; namespace urn:f;prefix f;import e {prefix x;}"
+            "deviation /x:a {deviate delete {default aa;}}"
+            "deviation /x:b {deviate delete {default ba;}}"
+            "deviation /x:c {deviate delete {default hello;}}"
+            "deviation /x:d {deviate delete {default world;}}}", LYS_IN_YANG, NULL));
+    assert_non_null((mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "e")));
+    assert_non_null(node = mod->compiled->data);
+    assert_null(((struct lysc_node_choice *)node)->dflt);
+    assert_non_null(node = node->next);
+    assert_null(((struct lysc_node_choice *)node)->dflt);
+    assert_non_null(leaf = (struct lysc_node_leaf *)node->next);
+    assert_null(leaf->dflt);
+    assert_non_null(llist = (struct lysc_node_leaflist *)leaf->next);
+    assert_int_equal(1, LY_ARRAY_COUNT(llist->dflts));
+    assert_string_equal("hello", llist->dflts[0]->realtype->plugin->print(UTEST_LYCTX, llist->dflts[0], LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_non_null(leaf = (struct lysc_node_leaf *)llist->next);
+    assert_string_equal("nothing", leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_int_equal(5, leaf->dflt->realtype->refcount);     /* 3x type reference, 2x default value reference (typedef's default does not reference own type) */
+    assert_non_null(llist = (struct lysc_node_leaflist *)leaf->next);
+    assert_int_equal(1, LY_ARRAY_COUNT(llist->dflts));
+    assert_string_equal("nothing", llist->dflts[0]->realtype->plugin->print(UTEST_LYCTX, llist->dflts[0], LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module g {yang-version 1.1; namespace urn:g;prefix g;import e {prefix x;}"
+            "deviation /x:b {deviate add {default x:ba;}}"
+            "deviation /x:c {deviate add {default bye;}}"
+            "deviation /x:d {deviate add {default all; default people;}}"
+            "deviation /x:c2 {deviate add {default hi; must 1;}}"
+            "deviation /x:d2 {deviate add {default hi; default all;}}}", LYS_IN_YANG, NULL));
+    assert_non_null((mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "e")));
+    assert_non_null(node = mod->compiled->data);
+    assert_null(((struct lysc_node_choice *)node)->dflt);
+    assert_non_null(node = node->next);
+    assert_non_null(((struct lysc_node_choice *)node)->dflt);
+    assert_string_equal("ba", ((struct lysc_node_choice *)node)->dflt->name);
+    assert_non_null(leaf = (struct lysc_node_leaf *)node->next);
+    assert_non_null(leaf->dflt);
+    assert_string_equal("bye", leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_non_null(llist = (struct lysc_node_leaflist *)leaf->next);
+    assert_int_equal(3, LY_ARRAY_COUNT(llist->dflts));
+    assert_string_equal("hello", llist->dflts[0]->realtype->plugin->print(UTEST_LYCTX, llist->dflts[0], LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_string_equal("all", llist->dflts[1]->realtype->plugin->print(UTEST_LYCTX, llist->dflts[1], LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_string_equal("people", llist->dflts[2]->realtype->plugin->print(UTEST_LYCTX, llist->dflts[2], LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_non_null(leaf = (struct lysc_node_leaf *)llist->next);
+    assert_non_null(leaf->dflt);
+    assert_string_equal("hi", leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_int_equal(6, leaf->dflt->realtype->refcount);     /* 3x type reference, 3x default value reference
+    - previous type's default values were replaced by node's default values where d2 now has 2 default values */
+    assert_int_equal(1, LY_ARRAY_COUNT(leaf->musts));
+    assert_int_equal(1, LY_ARRAY_COUNT(leaf->musts[0].prefixes));
+    assert_non_null(llist = (struct lysc_node_leaflist *)leaf->next);
+    assert_int_equal(2, LY_ARRAY_COUNT(llist->dflts));
+    assert_string_equal("hi", llist->dflts[0]->realtype->plugin->print(UTEST_LYCTX, llist->dflts[0], LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_string_equal("all", llist->dflts[1]->realtype->plugin->print(UTEST_LYCTX, llist->dflts[1], LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module h {yang-version 1.1; namespace urn:h;prefix h;import e {prefix x;}"
+            "deviation /x:b {deviate replace {default x:ba;}}"
+            "deviation /x:c {deviate replace {default hello;}}}", LYS_IN_YANG, NULL));
+    assert_non_null((mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "e")));
+    assert_non_null(node = mod->compiled->data);
+    assert_null(((struct lysc_node_choice *)node)->dflt);
+    assert_non_null(node = node->next);
+    assert_non_null(((struct lysc_node_choice *)node)->dflt);
+    assert_string_equal("ba", ((struct lysc_node_choice *)node)->dflt->name);
+    assert_non_null(leaf = (struct lysc_node_leaf *)node->next);
+    assert_non_null(leaf->dflt);
+    assert_string_equal("hello", leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module i {namespace urn:i;prefix i;"
+            "list l1 {key a; leaf a {type string;} leaf b {type string;} leaf c {type string;}}"
+            "list l2 {key a; unique \"b c\"; unique \"d\"; leaf a {type string;} leaf b {type string;}"
+            "         leaf c {type string;} leaf d {type string;}}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module j {namespace urn:j;prefix j;import i {prefix i;}"
+            "augment /i:l1 {leaf j_c {type string;}}"
+            "deviation /i:l1 {deviate add {unique \"b j:j_c\"; }}"
+            "deviation /i:l1 {deviate add {unique \"i:c\";}}"
+            "deviation /i:l2 {deviate delete {unique \"d\"; unique \"b c\";}}}", LYS_IN_YANG, NULL));
+    assert_non_null((mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "i")));
+    assert_non_null(list = (struct lysc_node_list *)mod->compiled->data);
+    assert_string_equal("l1", list->name);
+    assert_int_equal(2, LY_ARRAY_COUNT(list->uniques));
+    assert_int_equal(2, LY_ARRAY_COUNT(list->uniques[0]));
+    assert_string_equal("b", list->uniques[0][0]->name);
+    assert_string_equal("j_c", list->uniques[0][1]->name);
+    assert_int_equal(1, LY_ARRAY_COUNT(list->uniques[1]));
+    assert_string_equal("c", list->uniques[1][0]->name);
+    assert_non_null(list = (struct lysc_node_list *)list->next);
+    assert_string_equal("l2", list->name);
+    assert_null(list->uniques);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module k {namespace urn:k;prefix k; leaf a {type string;}"
+            "container top {leaf x {type string;} leaf y {type string; config false;}}"
+            "deviation /a {deviate add {config false; }}"
+            "deviation /top {deviate add {config false;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(node = mod->compiled->data);
+    assert_string_equal("a", node->name);
+    assert_true(node->flags & LYS_CONFIG_R);
+    assert_non_null(node = node->next);
+    assert_string_equal("top", node->name);
+    assert_true(node->flags & LYS_CONFIG_R);
+    assert_non_null(node = lysc_node_child(node));
+    assert_string_equal("x", node->name);
+    assert_true(node->flags & LYS_CONFIG_R);
+    assert_non_null(node = node->next);
+    assert_string_equal("y", node->name);
+    assert_true(node->flags & LYS_CONFIG_R);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module l {namespace urn:l;prefix l; leaf a {config false; type string;}"
+            "container top {config false; leaf x {type string;}}"
+            "deviation /a {deviate replace {config true;}}"
+            "deviation /top {deviate replace {config true;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(node = mod->compiled->data);
+    assert_string_equal("a", node->name);
+    assert_true(node->flags & LYS_CONFIG_W);
+    assert_non_null(node = node->next);
+    assert_string_equal("top", node->name);
+    assert_true(node->flags & LYS_CONFIG_W);
+    assert_non_null(node = lysc_node_child(node));
+    assert_string_equal("x", node->name);
+    assert_true(node->flags & LYS_CONFIG_W);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module m {namespace urn:m;prefix m;"
+            "container a {leaf a {type string;}}"
+            "container b {leaf b {mandatory true; type string;}}"
+            "deviation /a/a {deviate add {mandatory true;}}"
+            "deviation /b/b {deviate replace {mandatory false;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(node = mod->compiled->data);
+    assert_string_equal("a", node->name);
+    assert_true((node->flags & LYS_MAND_MASK) == LYS_MAND_TRUE);
+    assert_true((lysc_node_child(node)->flags & LYS_MAND_MASK) == LYS_MAND_TRUE);
+    assert_non_null(node = node->next);
+    assert_string_equal("b", node->name);
+    assert_false(node->flags & LYS_MAND_MASK);     /* just unset on container */
+    assert_true((lysc_node_child(node)->flags & LYS_MAND_MASK) == LYS_MAND_FALSE);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module n {yang-version 1.1; namespace urn:n;prefix n;"
+            "leaf a {default test; type string;}"
+            "leaf b {mandatory true; type string;}"
+            "deviation /a {deviate add {mandatory true;} deviate delete {default test;}}"
+            "deviation /b {deviate add {default test;} deviate replace {mandatory false;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(node = mod->compiled->data);
+    assert_string_equal("a", node->name);
+    assert_null(((struct lysc_node_leaf *)node)->dflt);
+    assert_true((node->flags & LYS_MAND_MASK) == LYS_MAND_TRUE);
+    assert_non_null(node = node->next);
+    assert_string_equal("b", node->name);
+    assert_non_null(((struct lysc_node_leaf *)node)->dflt);
+    assert_true((node->flags & LYS_MAND_MASK) == LYS_MAND_FALSE);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module o {namespace urn:o;prefix o;"
+            "leaf-list a {type string;}"
+            "list b {config false;}"
+            "leaf-list c {min-elements 1; max-elements 10; type string;}"
+            "list d {min-elements 10; max-elements 100; config false;}"
+            "deviation /a {deviate add {min-elements 1; max-elements 10;}}"
+            "deviation /b {deviate add {min-elements 10; max-elements 100;}}"
+            "deviation /c {deviate replace {min-elements 10; max-elements 100;}}"
+            "deviation /d {deviate replace {min-elements 1; max-elements 10;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(node = mod->compiled->data);
+    assert_string_equal("a", node->name);
+    assert_int_equal(1, ((struct lysc_node_leaflist *)node)->min);
+    assert_int_equal(10, ((struct lysc_node_leaflist *)node)->max);
+    assert_non_null(node = node->next);
+    assert_string_equal("b", node->name);
+    assert_int_equal(10, ((struct lysc_node_list *)node)->min);
+    assert_int_equal(100, ((struct lysc_node_list *)node)->max);
+    assert_non_null(node = node->next);
+    assert_string_equal("c", node->name);
+    assert_int_equal(10, ((struct lysc_node_leaflist *)node)->min);
+    assert_int_equal(100, ((struct lysc_node_leaflist *)node)->max);
+    assert_non_null(node = node->next);
+    assert_string_equal("d", node->name);
+    assert_int_equal(1, ((struct lysc_node_list *)node)->min);
+    assert_int_equal(10, ((struct lysc_node_list *)node)->max);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module p {yang-version 1.1; namespace urn:p;prefix p; typedef mytype {type int8; default 1;}"
+            "leaf a {type string; default 10;} leaf-list b {type string;}"
+            "deviation /a {deviate replace {type mytype;}}"
+            "deviation /b {deviate replace {type mytype;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(leaf = (struct lysc_node_leaf *)mod->compiled->data);
+    assert_string_equal("a", leaf->name);
+    assert_int_equal(LY_TYPE_INT8, leaf->type->basetype);
+    assert_string_equal("10", leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_int_equal(10, leaf->dflt->uint8);
+    assert_non_null(llist = (struct lysc_node_leaflist *)leaf->next);
+    assert_string_equal("b", llist->name);
+    assert_int_equal(LY_TYPE_INT8, llist->type->basetype);
+    assert_int_equal(1, LY_ARRAY_COUNT(llist->dflts));
+    assert_string_equal("1", llist->dflts[0]->realtype->plugin->print(UTEST_LYCTX, llist->dflts[0], LY_VALUE_SCHEMA, NULL, &dynamic, NULL));
+    assert_int_equal(0, dynamic);
+    assert_int_equal(1, llist->dflts[0]->uint8);
+
+    /* instance-identifiers with NULL canonical are changed to string types with a canonical value equal to the original value */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module q {yang-version 1.1; namespace urn:q;prefix q; import e {prefix e;}"
+            "leaf q {type instance-identifier; default \"/e:d2[.='a']\";}"
+            "leaf-list ql {type instance-identifier; default \"/e:d[.='b']\"; default \"/e:d2[.='c']\";}}", LYS_IN_YANG, &mod));
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module qdev {yang-version 1.1; namespace urn:qdev;prefix qd; import q {prefix q;}"
+            "deviation /q:q { deviate replace {type string;}}"
+            "deviation /q:ql { deviate replace {type string;}}}", LYS_IN_YANG, NULL));
+    assert_non_null(leaf = (struct lysc_node_leaf *)mod->compiled->data);
+    assert_int_equal(LY_TYPE_STRING, leaf->dflt->realtype->basetype);
+    assert_non_null(leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_CANON, NULL, NULL, NULL));
+    assert_string_equal("/e:d2[.='a']", leaf->dflt->_canonical);
+    assert_non_null(llist = (struct lysc_node_leaflist *)leaf->next);
+    assert_int_equal(2, LY_ARRAY_COUNT(llist->dflts));
+    assert_int_equal(LY_TYPE_STRING, llist->dflts[0]->realtype->basetype);
+    assert_string_equal("/e:d[.='b']", llist->dflts[0]->_canonical);
+    assert_int_equal(LY_TYPE_STRING, llist->dflts[0]->realtype->basetype);
+    assert_string_equal("/e:d2[.='c']", llist->dflts[1]->_canonical);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module r {yang-version 1.1; namespace urn:r;prefix r;"
+            "typedef mytype {type uint8; default 200;}"
+            "leaf r {type mytype;} leaf-list lr {type mytype;}"
+            "deviation /r:r {deviate replace {type string;}}"
+            "deviation /r:lr {deviate replace {type string;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(leaf = (struct lysc_node_leaf *)mod->compiled->data);
+    assert_string_equal("r", leaf->name);
+    assert_null(leaf->dflt);
+    assert_non_null(llist = (struct lysc_node_leaflist *)leaf->next);
+    assert_string_equal("lr", llist->name);
+    assert_null(llist->dflts);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module s {yang-version 1.1; namespace urn:s;prefix s;"
+            "leaf s {type instance-identifier {require-instance true;} default /s:x;}"
+            "leaf x {type string;} leaf y {type string;}"
+            "deviation /s:s {deviate replace {default /s:y;}}}", LYS_IN_YANG, &mod));
+    assert_non_null(leaf = (struct lysc_node_leaf *)mod->compiled->data);
+    assert_string_equal("s", leaf->name);
+    assert_non_null(leaf->dflt);
+    assert_non_null(str = leaf->dflt->realtype->plugin->print(UTEST_LYCTX, leaf->dflt, LY_VALUE_SCHEMA, mod->parsed, &dynamic, NULL));
+    assert_string_equal("/s:y", str);
+    if (dynamic) {
+        free((char *)str);
+    }
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module t {namespace urn:t;prefix t;"
+            "leaf l {type string;}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module u {namespace urn:u;prefix u;import t {prefix t;}"
+            "identity ident;"
+            "deviation /t:l {deviate replace {type identityref {base ident;}}}"
+            "}", LYS_IN_YANG, NULL));
+    assert_non_null((mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "t")));
+    assert_non_null(leaf = (struct lysc_node_leaf *)mod->compiled->data);
+    assert_string_equal("l", leaf->name);
+    assert_int_equal(LY_TYPE_IDENT, leaf->type->basetype);
+    assert_string_equal("ident", ((struct lysc_type_identityref *)leaf->type)->bases[0]->name);
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module v {namespace urn:v;prefix v;"
+            "identity ident; identity ident2 { base ident; }"
+            "}", LYS_IN_YANG, NULL));
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "submodule w-sub { belongs-to w { prefix w; }"
+            "import v { prefix v_pref; }"
+            "leaf l { type string; default \"v_pref:ident2\"; }"
+            "}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module w {namespace urn:w;prefix w;"
+            "include w-sub;"
+            "}", LYS_IN_YANG, &mod));
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module x {namespace urn:x;prefix x;"
+            "import w { prefix w_pref; } import v { prefix v_pref; }"
+            "deviation /w_pref:l { deviate replace { type identityref { base v_pref:ident; } } }"
+            "}", LYS_IN_YANG, NULL));
+    assert_non_null(leaf = (struct lysc_node_leaf *)mod->compiled->data);
+    assert_string_equal("l", leaf->name);
+    assert_int_equal(LY_TYPE_IDENT, leaf->type->basetype);
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module y {namespace urn:y;prefix y;"
+            "leaf l1 {type string;}"
+            "leaf l2 {type string;}"
+            "}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module z {namespace urn:z;prefix z;"
+            "import y {prefix y;}"
+            "deviation \"/y:l1\" {deviate replace {type leafref {path \"/l2\";}}}"
+            "deviation \"/y:l2\" {deviate replace {type leafref {path \"/z:al2\";}}}"
+            "leaf al2 {type string;}"
+            "}", LYS_IN_YANG, NULL));
+    assert_non_null((mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "y")));
+    assert_non_null(leaf = (struct lysc_node_leaf *)mod->compiled->data);
+    assert_string_equal("l1", leaf->name);
+    assert_int_equal(LY_TYPE_LEAFREF, leaf->type->basetype);
+    leaf = (struct lysc_node_leaf *)leaf->next;
+    assert_string_equal("l2", leaf->name);
+    assert_int_equal(LY_TYPE_LEAFREF, leaf->type->basetype);
+
+    /* complex dependencies */
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module m-base {namespace urn:m-base;prefix mb;"
+            "container cont {leaf l {type string;} leaf l2 {type string;}}}", LYS_IN_YANG, NULL));
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module m-base-aug {namespace urn:m-base-aug;prefix mba;"
+            "import m-base {prefix mb;}"
+            "augment /mb:cont {leaf l {type string;} leaf l2 {type string;}}"
+            "container cont2 {leaf l {type string;}}}"
+            "\n"
+            "module m-base-aug2 {namespace urn:m-base-aug2;prefix mba2;"
+            "import m-base {prefix mb;} import m-base-aug {prefix mba;}"
+            "augment /mb:cont {leaf augl1 {type string;}}"
+            "augment /mba:cont2 {leaf augl2 {type string;}}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module m-dev {namespace urn:m-dev;prefix md;"
+            "import m-base-aug {prefix mba;} import m-base-aug2 {prefix mba2;}"
+            "deviation /mba:cont2/mba2:augl2 {deviate not-supported;}}", LYS_IN_YANG, NULL));
+    assert_non_null((mod = ly_ctx_get_module_implemented(UTEST_LYCTX, "m-base-aug")));
+    node = mod->compiled->data;
+    assert_string_equal(node->name, "cont2");
+    assert_non_null(node = lysc_node_child(node));
+    assert_string_equal(node->name, "l");
+    assert_null(node->next);
+
+    /* default identity referencing deprecated */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module a1-imp {namespace urn:a1-imp;prefix a1i;"
+            "identity id-base;"
+            "identity id1 {base id-base; status deprecated;}"
+            "leaf l {type identityref {base \"id-base\";}}"
+            "}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a1 {namespace urn:a1;prefix a1;"
+            "import a1-imp {prefix a1i;}"
+            "deviation \"/a1i:l\" {deviate add {default \"a1i:id1\";}}"
+            "}", LYS_IN_YANG, NULL));
+
+    /* default instance-identifier referencing deprecated */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module a2-imp {namespace urn:a2-imp;prefix a2i;"
+            "leaf l {type instance-identifier;}"
+            "leaf k {type string; status deprecated;}"
+            "}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a2 {namespace urn:a2;prefix a2;"
+            "import a2-imp {prefix a2i;}"
+            "deviation \"/a2i:l\" {deviate add {default \"/a2i:k\";}}"
+            "}", LYS_IN_YANG, NULL));
+
+    /* must referencing deprecated */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module a3-imp {namespace urn:a3-imp;prefix a3i;"
+            "leaf l {type string;}"
+            "leaf k {type string; status deprecated;}"
+            "}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a3 {namespace urn:a3;prefix a3;"
+            "import a3-imp {prefix a3i;}"
+            "deviation \"/a3i:l\" {deviate add {must \"string-length(/a3i:k) > 0\";}}"
+            "}", LYS_IN_YANG, NULL));
+
+    /* type leafref referencing deprecated */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module a4-imp {namespace urn:a4-imp;prefix a4i;"
+            "leaf l {type string;}"
+            "leaf k {type string; status deprecated;}"
+            "}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a4 {namespace urn:a4;prefix a4;"
+            "import a4-imp {prefix a4i;}"
+            "deviation \"/a4i:l\" {deviate replace {type leafref {path \"/a4i:k\";}}}"
+            "}", LYS_IN_YANG, NULL));
+
+    /* unique referencing deprecated */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, "module a5-imp {namespace urn:a5-imp;prefix a5i;"
+            "list l1 {key \"k\";"
+            "  leaf k {type string;}"
+            "  leaf l {type string; status deprecated;}"
+            "}}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module a5 {namespace urn:a5;prefix a5;"
+            "import a5-imp {prefix a5i;}"
+            "deviation \"/a5i:l1\" {deviate add {unique \"a5i:l\";}}"
+            "}", LYS_IN_YANG, NULL));
+
+    assert_int_equal(LY_ENOTFOUND, lys_parse_mem(UTEST_LYCTX, "module aa1 {namespace urn:aa1;prefix aa1;import a {prefix a;}"
+            "deviation /a:top/a:z {deviate not-supported;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Deviation(s) target node \"/a:top/a:z\" from module \"aa1\" was not found.", "/a:{deviation='/a:top/a:z'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module aa2 {namespace urn:aa2;prefix aa2;import a {prefix a;}"
+            "deviation /a:top/a:a {deviate not-supported;}"
+            "deviation /a:top/a:a {deviate add {default error;}}}", LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("Multiple deviations of \"/a:top/a:a\" with one of them being \"not-supported\".", "/aa2:{deviation='/a:top/a:a'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module bb {namespace urn:bb;prefix bb;import a {prefix a;}"
+            "deviation a:top/a:a {deviate not-supported;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid absolute-schema-nodeid value \"a:top/a:a\" - \"/\" expected instead of \"a:top\".", "/bb:{deviation='a:top/a:a'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module cc {namespace urn:cc;prefix cc; container c;"
+            "deviation /c {deviate add {units meters;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation of container node - it is not possible to add \"units\" property.", "/cc:{deviation='/c'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module cd {namespace urn:cd;prefix cd; leaf c {type string; units centimeters;}"
+            "deviation /c {deviate add {units meters;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation adding \"units\" property which already exists (with value \"centimeters\").", "/cd:{deviation='/c'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module dd1 {namespace urn:dd1;prefix dd1; container c;"
+            "deviation /c {deviate delete {units meters;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation of container node - it is not possible to delete \"units\" property.", "/dd1:{deviation='/c'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module dd2 {namespace urn:dd2;prefix dd2; leaf c {type string;}"
+            "deviation /c {deviate delete {units meters;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation deleting \"units\" property \"meters\" which is not present.", "/dd2:{deviation='/c'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module dd3 {namespace urn:dd3;prefix dd3; leaf c {type string; units centimeters;}"
+            "deviation /c {deviate delete {units meters;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation deleting \"units\" property \"meters\" which does not match the target's property value \"centimeters\".",
+            "/dd3:{deviation='/c'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ee1 {namespace urn:ee1;prefix ee1; container c;"
+            "deviation /c {deviate replace {units meters;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation of container node - it is not possible to replace \"units\" property.", "/ee1:{deviation='/c'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ee2 {namespace urn:ee2;prefix ee2; leaf c {type string;}"
+            "deviation /c {deviate replace {units meters;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation replacing \"units\" property \"meters\" which is not present.", "/ee2:{deviation='/c'}");
+
+    /* the default is already deleted in /e:a byt module f */
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff1 {namespace urn:ff1;prefix ff1; import e {prefix e;}"
+            "deviation /e:a {deviate delete {default x:aa;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation deleting \"default\" property \"x:aa\" which is not present.", "/ff1:{deviation='/e:a'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff3 {namespace urn:ff3;prefix ff3; import e {prefix e;}"
+            "deviation /e:b {deviate delete {default e:b;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation deleting \"default\" property \"e:b\" which does not match the target's property value \"x:ba\".", "/ff3:{deviation='/e:b'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff5 {namespace urn:ff5;prefix ff5; anyxml a;"
+            "deviation /a {deviate delete {default x;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation of anyxml node - it is not possible to delete \"default\" property.", "/ff5:{deviation='/a'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff6 {namespace urn:ff6;prefix ff6; import e {prefix e;}"
+            "deviation /e:c {deviate delete {default hi;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation deleting \"default\" property \"hi\" which does not match the target's property value \"hello\".", "/ff6:{deviation='/e:c'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ff7 {namespace urn:ff7;prefix ff7; import e {prefix e;}"
+            "deviation /e:d {deviate delete {default hi;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation deleting \"default\" property \"hi\" which does not match any of the target's property values.", "/ff7:{deviation='/e:d'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg1 {namespace urn:gg1;prefix gg1; import e {prefix e;}"
+            "deviation /e:b {deviate add {default e:a;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation adding \"default\" property which already exists (with value \"x:ba\").", "/gg1:{deviation='/e:b'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg2 {namespace urn:gg2;prefix gg2; import e {prefix e;}"
+            "deviation /e:a {deviate add {default x:a;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/e:a",
+            "Default case prefix \"x\" not found in imports of \"gg2\".", "/e:a");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg3 {namespace urn:gg3;prefix gg3; import e {prefix e;}"
+            "deviation /e:a {deviate add {default a;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/e:a",
+            "Default case \"a\" not found.", "/e:a");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg4 {namespace urn:gg4;prefix gg4; import e {prefix e;}"
+            "deviation /e:c {deviate add {default hi;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation adding \"default\" property which already exists (with value \"hello\").", "/gg4:{deviation='/e:c'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg4 {namespace urn:gg4;prefix gg4; import e {prefix e;}"
+            "deviation /e:a {deviate add {default e:ac;}}}", LYS_IN_YANG, &mod));
+    /*CHECK_LOG_CTX("Invalid deviation adding \"default\" property \"e:ac\" of choice - mandatory node \"ac\" under the default case.", "/gg4:{deviation='/e:a'}");*/
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/e:a");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module gg5 {namespace urn:gg5;prefix gg5; leaf x {type string; mandatory true;}"
+            "deviation /x {deviate add {default error;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/gg5:{deviation='/x'}",
+            "Invalid mandatory leaf with a default value.", "/gg5:{deviation='/x'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module hh1 {yang-version 1.1; namespace urn:hh1;prefix hh1; import e {prefix e;}"
+            "deviation /e:d {deviate replace {default hi;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation of leaf-list node - it is not possible to replace \"default\" property.", "/hh1:{deviation='/e:d'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ii1 {namespace urn:ii1;prefix ii1; import i {prefix i;}"
+            "deviation /i:l1 {deviate delete {unique x;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation deleting \"unique\" property \"x\" which does not match any of the target's property values.", "/ii1:{deviation='/i:l1'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ii2 {namespace urn:ii2;prefix ii2; import i {prefix i;} leaf x { type string;}"
+            "deviation /i:l2 {deviate delete {unique d;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation deleting \"unique\" property \"d\" which does not match any of the target's property values.", "/ii2:{deviation='/i:l2'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ii3 {namespace urn:ii3;prefix ii3; leaf x { type string;}"
+            "deviation /x {deviate delete {unique d;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation of leaf node - it is not possible to delete \"unique\" property.", "/ii3:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ii4 {namespace urn:ii4;prefix ii4; leaf x { type string;}"
+            "deviation /x {deviate add {unique d;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation of leaf node - it is not possible to add \"unique\" property.", "/ii4:{deviation='/x'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module jj1 {namespace urn:jj1;prefix jj1; choice ch {case a {leaf a{type string;}}}"
+            "deviation /ch/a {deviate add {config false;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation of case node - it is not possible to add \"config\" property.", "/jj1:{deviation='/ch/a'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module jj2 {namespace urn:jj2;prefix jj2; container top {config false; leaf x {type string;}}"
+            "deviation /top/x {deviate add {config true;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/jj2:{deviation='/top/x'}",
+            "Configuration node cannot be child of any state data node.", "/jj2:{deviation='/top/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module jj3 {namespace urn:jj3;prefix jj3; container top {leaf x {type string;}}"
+            "deviation /top/x {deviate replace {config false;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation replacing \"config\" property \"config false\" which is not present.", "/jj3:{deviation='/top/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module jj4 {namespace urn:jj4;prefix jj4; choice ch {case a {leaf a{type string;}}}"
+            "deviation /ch/a {deviate replace {config false;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation of case node - it is not possible to replace \"config\" property.", "/jj4:{deviation='/ch/a'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module jj5 {namespace urn:jj5;prefix jj5; container top {leaf x {type string; config true;}}"
+            "deviation /top {deviate add {config false;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/jj5:top",
+            "Configuration node cannot be child of any state data node.", "/jj5:top/x");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module jj6 {namespace urn:jj6;prefix jj6; leaf x {config false; type string;}"
+            "deviation /x {deviate add {config true;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation adding \"config\" property which already exists (with value \"config false\").", "/jj6:{deviation='/x'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module kk1 {namespace urn:kk1;prefix kk1; container top {leaf a{type string;}}"
+            "deviation /top {deviate add {mandatory true;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation of container node - it is not possible to add \"mandatory\" property.", "/kk1:{deviation='/top'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module kk2 {namespace urn:kk2;prefix kk2; container top {leaf a{type string;}}"
+            "deviation /top {deviate replace {mandatory true;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation of container node - it is not possible to replace \"mandatory\" property.", "/kk2:{deviation='/top'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module kk3 {namespace urn:kk3;prefix kk3; container top {leaf x {type string;}}"
+            "deviation /top/x {deviate replace {mandatory true;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation replacing \"mandatory\" property \"mandatory true\" which is not present.", "/kk3:{deviation='/top/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module kk4 {namespace urn:kk4;prefix kk4; leaf x {mandatory true; type string;}"
+            "deviation /x {deviate add {mandatory false;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation adding \"mandatory\" property which already exists (with value \"mandatory true\").", "/kk4:{deviation='/x'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ll1 {namespace urn:ll1;prefix ll1; leaf x {default test; type string;}"
+            "deviation /x {deviate add {mandatory true;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/ll1:{deviation='/x'}",
+            "Invalid mandatory leaf with a default value.", "/ll1:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ll2 {yang-version 1.1; namespace urn:ll2;prefix ll2; leaf-list x {default test; type string;}"
+            "deviation /x {deviate add {min-elements 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/ll2:{deviation='/x'}",
+            "The default statement is present on leaf-list with a nonzero min-elements.", "/ll2:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module ll2 {namespace urn:ll2;prefix ll2; choice ch {default a; leaf a {type string;} leaf b {type string;}}"
+            "deviation /ch {deviate add {mandatory true;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/ll2:ch",
+            "Invalid mandatory choice with a default case.", "/ll2:ch");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm1 {namespace urn:mm1;prefix mm1; leaf-list x {min-elements 10; type string;}"
+            "deviation /x {deviate add {max-elements 5;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/mm1:{deviation='/x'}",
+            "Leaf-list min-elements 10 is bigger than max-elements 5.", "/mm1:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm2 {namespace urn:mm2;prefix mm2; leaf-list x {max-elements 10; type string;}"
+            "deviation /x {deviate add {min-elements 20;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/mm2:{deviation='/x'}",
+            "Leaf-list min-elements 20 is bigger than max-elements 10.", "/mm2:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm3 {namespace urn:mm3;prefix mm3; list x {min-elements 5; max-elements 10; config false;}"
+            "deviation /x {deviate replace {max-elements 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/mm3:{deviation='/x'}",
+            "List min-elements 5 is bigger than max-elements 1.", "/mm3:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm4 {namespace urn:mm4;prefix mm4; list x {min-elements 5; max-elements 10; config false;}"
+            "deviation /x {deviate replace {min-elements 20;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/mm4:{deviation='/x'}",
+            "List min-elements 20 is bigger than max-elements 10.", "/mm4:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm5 {namespace urn:mm5;prefix mm5; leaf-list x {type string; min-elements 5;}"
+            "deviation /x {deviate add {min-elements 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation adding \"min-elements\" property which already exists (with value \"5\").", "/mm5:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm6 {namespace urn:mm6;prefix mm6; list x {config false; min-elements 5;}"
+            "deviation /x {deviate add {min-elements 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation adding \"min-elements\" property which already exists (with value \"5\").", "/mm6:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm7 {namespace urn:mm7;prefix mm7; leaf-list x {type string; max-elements 5;}"
+            "deviation /x {deviate add {max-elements 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation adding \"max-elements\" property which already exists (with value \"5\").", "/mm7:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm8 {namespace urn:mm8;prefix mm8; list x {config false; max-elements 5;}"
+            "deviation /x {deviate add {max-elements 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation adding \"max-elements\" property which already exists (with value \"5\").", "/mm8:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm9 {namespace urn:mm9;prefix mm9; leaf-list x {type string;}"
+            "deviation /x {deviate replace {min-elements 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation replacing \"min-elements\" property which is not present.", "/mm9:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm10 {namespace urn:mm10;prefix mm10; list x {config false;}"
+            "deviation /x {deviate replace {min-elements 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation replacing \"min-elements\" property which is not present.", "/mm10:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm11 {namespace urn:mm11;prefix mm11; leaf-list x {type string;}"
+            "deviation /x {deviate replace {max-elements 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation replacing \"max-elements\" property which is not present.", "/mm11:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module mm12 {namespace urn:mm12;prefix mm12; list x {config false; }"
+            "deviation /x {deviate replace {max-elements 1;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation replacing \"max-elements\" property which is not present.", "/mm12:{deviation='/x'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module nn1 {namespace urn:nn1;prefix nn1; anyxml x;"
+            "deviation /x {deviate replace {type string;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid deviation of anyxml node - it is not possible to replace \"type\" property.", "/nn1:{deviation='/x'}");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module nn2 {namespace urn:nn2;prefix nn2; leaf-list x {type string;}"
+            "deviation /x {deviate replace {type empty;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Compilation of a deviated and/or refined node failed.", "/nn2:{deviation='/x'}",
+            "Leaf-list of type \"empty\" is allowed only in YANG 1.1 modules.", "/nn2:{deviation='/x'}");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module oo1 {namespace urn:oo1;prefix oo1; leaf x {type uint16; default 300;}"
+            "deviation /x {deviate replace {type uint8;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid default - value does not fit the type "
+            "(Value \"300\" is out of type uint8 min/max bounds.).", "Schema location \"/oo1:x\".");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module oo2 {yang-version 1.1;namespace urn:oo2;prefix oo2; leaf-list x {type uint16; default 10; default 300;}"
+            "deviation /x {deviate replace {type uint8;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid default - value does not fit the type "
+            "(Value \"300\" is out of type uint8 min/max bounds.).", "Schema location \"/oo2:x\".");
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module oo3 {namespace urn:oo3;prefix oo3; leaf x {type uint8;}"
+            "deviation /x {deviate add {default 300;}}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Invalid default - value does not fit the type "
+            "(Value \"300\" is out of type uint8 min/max bounds.).", "Schema location \"/oo3:x\".");
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX, "module pp {namespace urn:pp;prefix pp; leaf l { type leafref {path /c/x;}}"
+            "container c {leaf x {type string;} leaf y {type string;}}}", LYS_IN_YANG, &mod));
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX, "module pp1 {namespace urn:pp1;prefix pp1; import pp {prefix pp;}"
+            "deviation /pp:c/pp:x {deviate not-supported;}}", LYS_IN_YANG, &mod));
+    CHECK_LOG_CTX("Target of leafref \"l\" cannot be referenced because it is disabled.", "Schema location \"/pp:l\".");
+}
+
+static void
+test_when(void **state)
+{
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX,
+            "module a {\n"
+            "    namespace urn:a;\n"
+            "    prefix a;\n"
+            "    container cont {\n"
+            "        leaf l {\n"
+            "            when \"/cont/lst[val='25']\";\n"
+            "            type empty;\n"
+            "        }\n"
+            "        list lst {\n"
+            "            key \"k\";\n"
+            "            leaf k {\n"
+            "                type uint8;\n"
+            "            }\n"
+            "            leaf val {\n"
+            "                when /cont2;\n"
+            "                type int32;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "    container cont2 {\n"
+            "        presence \"a\";\n"
+            "        when ../cont/l;\n"
+            "    }\n"
+            "}",
+            LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("When condition cyclic dependency on the node \"cont2\".", "Schema location \"/a:cont/lst/val\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX,
+            "module a {\n"
+            "    namespace urn:a;\n"
+            "    prefix a;\n"
+            "    container cont {\n"
+            "        leaf l {\n"
+            "            when \"/cont/lst[val='25']\";\n"
+            "            type empty;\n"
+            "        }\n"
+            "        list lst {\n"
+            "            key \"k\";\n"
+            "            leaf k {\n"
+            "                type uint8;\n"
+            "            }\n"
+            "            leaf val {\n"
+            "                when /cont2;\n"
+            "                type int32;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "    container cont2 {\n"
+            "        presence \"a\";\n"
+            "        when ../cont/lst/val;\n"
+            "    }\n"
+            "}",
+            LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("When condition cyclic dependency on the node \"cont2\".", "Schema location \"/a:cont/lst/val\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX,
+            "module a {\n"
+            "    namespace urn:a;\n"
+            "    prefix a;\n"
+            "    leaf val {\n"
+            "        type int64;\n"
+            "        when \"../val='25'\";\n"
+            "    }\n"
+            "}",
+            LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("When condition is accessing its own conditional node value.", "Schema location \"/a:val\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX,
+            "module a {\n"
+            "    namespace urn:a;\n"
+            "    prefix a;\n"
+            "    grouping grp {\n"
+            "        leaf val {\n"
+            "            type int64;\n"
+            "        }\n"
+            "    }\n"
+            "    uses grp {\n"
+            "        when \"val='25'\";\n"
+            "    }\n"
+            "}",
+            LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("When condition is accessing its own conditional node value.", "Schema location \"/a:val\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX,
+            "module a {\n"
+            "    namespace urn:a;\n"
+            "    prefix a;\n"
+            "    augment /cont {\n"
+            "        when \"val='25'\";\n"
+            "        leaf val {\n"
+            "            type int64;\n"
+            "        }\n"
+            "    }\n"
+            "    container cont;\n"
+            "}",
+            LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("When condition is accessing its own conditional node value.", "Schema location \"/a:cont/val\".");
+
+    assert_int_equal(LY_EVALID, lys_parse_mem(UTEST_LYCTX,
+            "module a {\n"
+            "    namespace urn:a;\n"
+            "    prefix a;\n"
+            "    augment /cont {\n"
+            "        when \"aug-cont/aug-l\";\n"
+            "        container aug-cont {\n"
+            "            leaf aug-l {\n"
+            "                type int64;\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "    container cont;\n"
+            "}",
+            LYS_IN_YANG, NULL));
+    CHECK_LOG_CTX("When condition is accessing its own conditional node children.", "Schema location \"/a:cont/aug-cont\".");
+
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX,
+            "module b {\n"
+            "    namespace urn:b;\n"
+            "    prefix b;\n"
+            "    container c {\n"
+            "        list l {\n"
+            "            key name;\n"
+            "            leaf name {\n"
+            "                type string;\n"
+            "            }\n"
+            "\n"
+            "            container cond-data {\n"
+            "                when \"/c/l2[name = current()/../name]/val = 'value'\";\n"
+            "                leaf cond-leaf {\n"
+            "                    type string;\n"
+            "                    default \"default_val\";\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "        list l2 {\n"
+            "            key name;\n"
+            "            leaf name {\n"
+            "                type string;\n"
+            "            }\n"
+            "\n"
+            "            container c2 {\n"
+            "                leaf val {\n"
+            "                    type string;\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "    }\n"
+            "}",
+            LYS_IN_YANG, NULL));
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb,
+            "module c1 {"
+            "  namespace urn:c1;"
+            "  prefix c1;"
+            "  container my-container {"
+            "    leaf my-type {"
+            "      type string;"
+            "    }"
+            "  }"
+            "}\n"
+            "module c2 {"
+            "  namespace \"urn:c2\";"
+            "  prefix c2;"
+            "  grouping my-group {"
+            "    leaf my-leaf {"
+            "      type string;"
+            "    }"
+            "  }"
+            "}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX,
+            "module c3 {"
+            "  namespace \"urn:c3\";"
+            "  prefix c3;"
+            "  import c1 {"
+            "    prefix c1;"
+            "  }"
+            "  import c2 {"
+            "    prefix c2;"
+            "  }"
+            "  augment \"/c1:my-container\" {"
+            "    uses c2:my-group {"
+            "      when \"./c1:my-type = '42'\";"
+            "    }"
+            "  }"
+            "}",
+            LYS_IN_YANG, NULL));
+}
+
+static void
+test_must(void **state)
+{
+    /* "*" must not be restricted to any module */
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb,
+            "module a {"
+            "  namespace urn:a;"
+            "  prefix a;"
+            "  container cont {"
+            "    leaf l {"
+            "      type empty;"
+            "    }"
+            "    list lst {"
+            "      key \"k\";"
+            "      leaf k {"
+            "        type uint8;"
+            "      }"
+            "    }"
+            "  }"
+            "}");
+    assert_int_equal(LY_SUCCESS, lys_parse_mem(UTEST_LYCTX,
+            "module a-aug {"
+            "  namespace urn:aa;"
+            "  prefix aa;"
+            "  import a {"
+            "    prefix a;"
+            "  }"
+            "  augment /a:cont {"
+            "    container cont2 {"
+            "      must \"/a:cont/*/a:k\";"
+            "      leaf aug {"
+            "        type empty;"
+            "      }"
+            "    }"
+            "  }"
+            "}",
+            LYS_IN_YANG, NULL));
+    /* no warnings */
+    CHECK_LOG_CTX(NULL, NULL);
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_module, setup),
+        UTEST(test_name_collisions, setup),
+        UTEST(test_type_length, setup),
+        UTEST(test_type_range, setup),
+        UTEST(test_type_pattern, setup),
+        UTEST(test_type_enum, setup),
+        UTEST(test_type_dec64, setup),
+        UTEST(test_type_instanceid, setup),
+        UTEST(test_identity, setup),
+        UTEST(test_type_identityref, setup),
+        UTEST(test_type_leafref, setup),
+        UTEST(test_type_empty, setup),
+        UTEST(test_type_union, setup),
+        UTEST(test_type_dflt, setup),
+        UTEST(test_status, setup),
+        UTEST(test_node_container, setup),
+        UTEST(test_node_leaflist, setup),
+        UTEST(test_node_list, setup),
+        UTEST(test_node_choice, setup),
+        UTEST(test_node_anydata, setup),
+        UTEST(test_action, setup),
+        UTEST(test_notification, setup),
+        UTEST(test_grouping, setup),
+        UTEST(test_uses, setup),
+        UTEST(test_refine, setup),
+        UTEST(test_augment, setup),
+        UTEST(test_deviation, setup),
+        UTEST(test_when, setup),
+        UTEST(test_must, setup),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/schema/test_yang.c b/tests/utests/schema/test_yang.c
new file mode 100644
index 0000000..78b1798
--- /dev/null
+++ b/tests/utests/schema/test_yang.c
@@ -0,0 +1,1750 @@
+/**
+ * @file test_yang.c
+ * @author Radek Krejci <rkrejci@cesnet.cz>
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief unit tests for YANG module parser and printer
+ *
+ * Copyright (c) 2018 - 2022 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "common.h"
+#include "in_internal.h"
+#include "parser_internal.h"
+#include "schema_compile.h"
+#include "tree_edit.h"
+#include "tree_schema.h"
+#include "tree_schema_free.h"
+
+/* originally static functions from parser_yang.c and parser_yin.c */
+LY_ERR buf_add_char(struct ly_ctx *ctx, struct ly_in *in, size_t len, char **buf, size_t *buf_len, size_t *buf_used);
+LY_ERR buf_store_char(struct lysp_yang_ctx *ctx, enum yang_arg arg, char **word_p,
+        size_t *word_len, char **word_b, size_t *buf_len, uint8_t need_buf, uint8_t *prefix);
+LY_ERR get_keyword(struct lysp_yang_ctx *ctx, enum ly_stmt *kw, char **word_p, size_t *word_len);
+LY_ERR get_argument(struct lysp_yang_ctx *ctx, enum yang_arg arg,
+        uint16_t *flags, char **word_p, char **word_b, size_t *word_len);
+LY_ERR skip_comment(struct lysp_yang_ctx *ctx, uint8_t comment);
+
+LY_ERR parse_action(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node_action **actions);
+LY_ERR parse_any(struct lysp_yang_ctx *ctx, enum ly_stmt kw, struct lysp_node *parent, struct lysp_node **siblings);
+LY_ERR parse_augment(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node_augment **augments);
+LY_ERR parse_case(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings);
+LY_ERR parse_container(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings);
+LY_ERR parse_deviate(struct lysp_yang_ctx *ctx, struct lysp_deviate **deviates);
+LY_ERR parse_deviation(struct lysp_yang_ctx *ctx, struct lysp_deviation **deviations);
+LY_ERR parse_grouping(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node_grp **groupings);
+LY_ERR parse_choice(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings);
+LY_ERR parse_leaf(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings);
+LY_ERR parse_leaflist(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings);
+LY_ERR parse_list(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings);
+LY_ERR parse_maxelements(struct lysp_yang_ctx *ctx, uint32_t *max, uint16_t *flags, struct lysp_ext_instance **exts);
+LY_ERR parse_minelements(struct lysp_yang_ctx *ctx, uint32_t *min, uint16_t *flags, struct lysp_ext_instance **exts);
+LY_ERR parse_module(struct lysp_yang_ctx *ctx, struct lysp_module *mod);
+LY_ERR parse_notif(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node_notif **notifs);
+LY_ERR parse_submodule(struct lysp_yang_ctx *ctx, struct lysp_submodule *submod);
+LY_ERR parse_uses(struct lysp_yang_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings);
+LY_ERR parse_when(struct lysp_yang_ctx *ctx, struct lysp_when **when_p);
+LY_ERR parse_type_enum_value_pos(struct lysp_yang_ctx *ctx, enum ly_stmt val_kw, struct lysp_type_enum *enm);
+
+struct lysp_yang_ctx *YCTX;
+struct lysf_ctx fctx;
+
+struct ly_in in = {0};
+
+#define YCTX_INIT \
+    in.line = 1; \
+    YCTX->in = &in; \
+    LOG_LOCINIT(UTEST_LYCTX, NULL, NULL, NULL, &in)
+
+static int
+setup(void **state)
+{
+    struct lysp_module *pmod;
+
+    UTEST_SETUP;
+
+    /* allocate parser context */
+    YCTX = calloc(1, sizeof(*YCTX));
+    YCTX->main_ctx = (struct lysp_ctx *)YCTX;
+    YCTX->format = LYS_IN_YANG;
+    ly_set_new(&YCTX->parsed_mods);
+
+    /* allocate new parsed module */
+    pmod = calloc(1, sizeof *pmod);
+    ly_set_add(YCTX->parsed_mods, pmod, 1, NULL);
+
+    /* allocate new module */
+    pmod->mod = calloc(1, sizeof *pmod->mod);
+    pmod->mod->ctx = UTEST_LYCTX;
+    pmod->mod->parsed = pmod;
+
+    /* initilize and use the global easily available and customizable input handler */
+    in.line = 1;
+    YCTX->in = &in;
+    LOG_LOCSET(NULL, NULL, NULL, &in);
+
+    fctx.ctx = PARSER_CTX(YCTX);
+    fctx.mod = pmod->mod;
+
+    return 0;
+}
+
+static int
+teardown(void **state)
+{
+    lys_module_free(&fctx, PARSER_CUR_PMOD(YCTX)->mod, 0);
+    LOG_LOCBACK(0, 0, 0, 1);
+
+    ly_set_free(YCTX->parsed_mods, NULL);
+    ly_set_erase(&YCTX->ext_inst, NULL);
+    free(YCTX);
+    YCTX = NULL;
+
+    lysf_ctx_erase(&fctx);
+
+    UTEST_TEARDOWN;
+
+    return 0;
+}
+
+#define TEST_DUP_GENERIC(PREFIX, MEMBER, VALUE1, VALUE2, FUNC, RESULT, LINE, CLEANUP) \
+    in.current = PREFIX MEMBER" "VALUE1";"MEMBER" "VALUE2";} ..."; \
+    assert_int_equal(LY_EVALID, FUNC(YCTX, RESULT)); \
+    CHECK_LOG_CTX("Duplicate keyword \""MEMBER"\".", "Line number "LINE".");\
+    CLEANUP
+static void
+test_helpers(void **state)
+{
+    char *buf, *p;
+    size_t len, size;
+    uint8_t prefix = 0;
+
+    /* storing into buffer */
+    in.current = "abcd";
+    buf = NULL;
+    size = len = 0;
+    assert_int_equal(LY_SUCCESS, buf_add_char(NULL, &in, 2, &buf, &size, &len));
+    assert_int_not_equal(0, size);
+    assert_int_equal(2, len);
+    assert_string_equal("cd", in.current);
+    assert_false(strncmp("ab", buf, 2));
+    free(buf);
+    buf = NULL;
+
+    /* invalid first characters */
+    len = 0;
+    in.current = "2invalid";
+    assert_int_equal(LY_EVALID, buf_store_char(YCTX, Y_IDENTIF_ARG, &p, &len, &buf, &size, 1, &prefix));
+    in.current = ".invalid";
+    assert_int_equal(LY_EVALID, buf_store_char(YCTX, Y_IDENTIF_ARG, &p, &len, &buf, &size, 1, &prefix));
+    in.current = "-invalid";
+    assert_int_equal(LY_EVALID, buf_store_char(YCTX, Y_IDENTIF_ARG, &p, &len, &buf, &size, 1, &prefix));
+    /* invalid following characters */
+    len = 3; /* number of characters read before the str content */
+    in.current = "!";
+    assert_int_equal(LY_EVALID, buf_store_char(YCTX, Y_IDENTIF_ARG, &p, &len, &buf, &size, 1, &prefix));
+    in.current = ":";
+    assert_int_equal(LY_EVALID, buf_store_char(YCTX, Y_IDENTIF_ARG, &p, &len, &buf, &size, 1, &prefix));
+    /* valid colon for prefixed identifiers */
+    len = size = 0;
+    p = NULL;
+    prefix = 0;
+    in.current = "x:id";
+    assert_int_equal(LY_SUCCESS, buf_store_char(YCTX, Y_PREF_IDENTIF_ARG, &p, &len, &buf, &size, 0, &prefix));
+    assert_int_equal(1, len);
+    assert_null(buf);
+    assert_string_equal(":id", in.current);
+    assert_int_equal('x', p[len - 1]);
+    assert_int_equal(LY_SUCCESS, buf_store_char(YCTX, Y_PREF_IDENTIF_ARG, &p, &len, &buf, &size, 1, &prefix));
+    assert_int_equal(2, len);
+    assert_string_equal("id", in.current);
+    assert_int_equal(':', p[len - 1]);
+    free(buf);
+    prefix = 0;
+
+    /* checking identifiers */
+    assert_int_equal(LY_EVALID, lysp_check_identifierchar((struct lysp_ctx *)YCTX, ':', 0, NULL));
+    CHECK_LOG_CTX("Invalid identifier character ':' (0x003a).", "Line number 1.");
+    assert_int_equal(LY_EVALID, lysp_check_identifierchar((struct lysp_ctx *)YCTX, '#', 1, NULL));
+    CHECK_LOG_CTX("Invalid identifier first character '#' (0x0023).", "Line number 1.");
+
+    assert_int_equal(LY_SUCCESS, lysp_check_identifierchar((struct lysp_ctx *)YCTX, 'a', 1, &prefix));
+    assert_int_equal(0, prefix);
+    assert_int_equal(LY_SUCCESS, lysp_check_identifierchar((struct lysp_ctx *)YCTX, ':', 0, &prefix));
+    assert_int_equal(1, prefix);
+    assert_int_equal(LY_EVALID, lysp_check_identifierchar((struct lysp_ctx *)YCTX, ':', 0, &prefix));
+    assert_int_equal(1, prefix);
+    assert_int_equal(LY_SUCCESS, lysp_check_identifierchar((struct lysp_ctx *)YCTX, 'b', 0, &prefix));
+    assert_int_equal(2, prefix);
+    /* second colon is invalid */
+    assert_int_equal(LY_EVALID, lysp_check_identifierchar((struct lysp_ctx *)YCTX, ':', 0, &prefix));
+    CHECK_LOG_CTX("Invalid identifier character ':' (0x003a).", "Line number 1.");
+}
+
+#define TEST_GET_ARGUMENT_SUCCESS(INPUT_TEXT, CTX, ARG_TYPE, EXPECT_WORD, EXPECT_LEN, EXPECT_CURRENT, EXPECT_LINE)\
+    {\
+        const char * text = INPUT_TEXT;\
+        in.line = 1;\
+        in.current = text;\
+        assert_int_equal(LY_SUCCESS, get_argument(CTX, Y_MAYBE_STR_ARG, NULL, &word, &buf, &len));\
+        assert_string_equal(word, EXPECT_WORD);\
+        assert_int_equal(len, EXPECT_LEN);\
+        assert_string_equal(EXPECT_CURRENT, in.current);\
+        assert_int_equal(EXPECT_LINE, in.line);\
+    }
+
+static void
+test_comments(void **state)
+{
+    char *word, *buf;
+    size_t len;
+
+    TEST_GET_ARGUMENT_SUCCESS(" // this is a text of / one * line */ comment\nargument;",
+            YCTX, Y_STR_ARG, "argument;", 8, ";", 2);
+    assert_null(buf);
+
+    TEST_GET_ARGUMENT_SUCCESS("/* this is a \n * text // of / block * comment */\"arg\" + \"ume\" \n + \n \"nt\";",
+            YCTX, Y_STR_ARG, "argument", 8, ";", 4);
+    assert_ptr_equal(buf, word);
+    free(word);
+
+    in.line = 1;
+    in.current = " this is one line comment on last line";
+    assert_int_equal(LY_SUCCESS, skip_comment(YCTX, 1));
+    assert_true(in.current[0] == '\0');
+
+    in.line = 1;
+    in.current = " this is a not terminated comment x";
+    assert_int_equal(LY_EVALID, skip_comment(YCTX, 2));
+    CHECK_LOG_CTX("Unexpected end-of-input, non-terminated comment.", "Line number 1.");
+    assert_true(in.current[0] == '\0');
+}
+
+static void
+test_arg(void **state)
+{
+    char *word, *buf;
+    size_t len;
+
+    /* missing argument */
+    in.current = ";";
+    assert_int_equal(LY_SUCCESS, get_argument(YCTX, Y_MAYBE_STR_ARG, NULL, &word, &buf, &len));
+    assert_null(word);
+
+    in.current = "{";
+    assert_int_equal(LY_EVALID, get_argument(YCTX, Y_STR_ARG, NULL, &word, &buf, &len));
+    CHECK_LOG_CTX("Invalid character sequence \"{\", expected an argument.", "Line number 1.");
+
+    /* invalid escape sequence */
+    in.current = "\"\\s\"";
+    assert_int_equal(LY_EVALID, get_argument(YCTX, Y_STR_ARG, NULL, &word, &buf, &len));
+    CHECK_LOG_CTX("Double-quoted string unknown special character \'\\s\'.", "Line number 1.");
+
+    TEST_GET_ARGUMENT_SUCCESS("\'\\s\'", YCTX, Y_STR_ARG, "\\s\'", 2, "", 1);
+
+    /* invalid character after the argument */
+    in.current = "hello\"";
+    assert_int_equal(LY_EVALID, get_argument(YCTX, Y_STR_ARG, NULL, &word, &buf, &len));
+    CHECK_LOG_CTX("Invalid character sequence \"\"\", expected unquoted string character, optsep, semicolon or opening brace.", "Line number 1.");
+
+    in.current = "hello}";
+    assert_int_equal(LY_EVALID, get_argument(YCTX, Y_STR_ARG, NULL, &word, &buf, &len));
+    CHECK_LOG_CTX("Invalid character sequence \"}\", expected unquoted string character, optsep, semicolon or opening brace.", "Line number 1.");
+    /* invalid identifier-ref-arg-str */
+    in.current = "pre:pre:value";
+    assert_int_equal(LY_EVALID, get_argument(YCTX, Y_PREF_IDENTIF_ARG, NULL, &word, &buf, &len));
+    CHECK_LOG_CTX("Invalid identifier character ':' (0x003a).", "Line number 1.");
+
+    in.current = "\"\";"; /* empty identifier is not allowed */
+    assert_int_equal(LY_EVALID, get_argument(YCTX, Y_IDENTIF_ARG, NULL, &word, &buf, &len));
+    CHECK_LOG_CTX("Statement argument is required.", "Line number 1.");
+
+    in.current = "\"\";"; /* empty reference identifier is not allowed */
+    assert_int_equal(LY_EVALID, get_argument(YCTX, Y_PREF_IDENTIF_ARG, NULL, &word, &buf, &len));
+    CHECK_LOG_CTX("Statement argument is required.", "Line number 1.");
+
+    /* slash is not an invalid character */
+    TEST_GET_ARGUMENT_SUCCESS("hello/x\t", YCTX, Y_STR_ARG, "hello/x\t", 7, "\t", 1);
+    assert_null(buf);
+
+    /* different quoting */
+    TEST_GET_ARGUMENT_SUCCESS("hello/x\t", YCTX, Y_STR_ARG, "hello/x\t", 7, "\t", 1);
+
+    TEST_GET_ARGUMENT_SUCCESS("hello ", YCTX, Y_STR_ARG, "hello ", 5, " ", 1);
+
+    TEST_GET_ARGUMENT_SUCCESS("hello/*comment*/\n", YCTX, Y_STR_ARG, "hello/*comment*/\n", 5, "\n", 1);
+
+    TEST_GET_ARGUMENT_SUCCESS("\"hello\\n\\t\\\"\\\\\";", YCTX, Y_STR_ARG, "hello\n\t\"\\", 9, ";", 1);
+    free(buf);
+
+    YCTX->indent = 14;
+    /* - space and tabs before newline are stripped out
+     * - space and tabs after newline (indentation) are stripped out
+     */
+    TEST_GET_ARGUMENT_SUCCESS("\"hello \t\n\t\t world!\"", YCTX, Y_STR_ARG, "hello\n  world!", 14, "", 2);
+    free(buf);
+
+/* In contrast to previous, the backslash-escaped tabs are expanded after trimming, so they are preserved */
+    YCTX->indent = 14;
+    TEST_GET_ARGUMENT_SUCCESS("\"hello \\t\n\t\\t world!\"", YCTX, Y_STR_ARG, "hello \t\n\t world!", 16, "", 2);
+    assert_ptr_equal(word, buf);
+    free(buf);
+
+    /* Do not handle whitespaces after backslash-escaped newline as indentation */
+    YCTX->indent = 14;
+    TEST_GET_ARGUMENT_SUCCESS("\"hello\\n\t\t world!\"", YCTX, Y_STR_ARG, "hello\n\t\t world!", 15, "", 1);
+    assert_ptr_equal(word, buf);
+    free(buf);
+
+    YCTX->indent = 14;
+    TEST_GET_ARGUMENT_SUCCESS("\"hello\n \tworld!\"", YCTX, Y_STR_ARG, "hello\nworld!", 12, "", 2);
+    assert_ptr_equal(word, buf);
+    free(buf);
+
+    TEST_GET_ARGUMENT_SUCCESS("\'hello\'", YCTX, Y_STR_ARG, "hello'", 5, "", 1);
+
+    TEST_GET_ARGUMENT_SUCCESS("\"hel\"  +\t\n\"lo\"", YCTX, Y_STR_ARG, "hello", 5, "", 2);
+    assert_ptr_equal(word, buf);
+    free(buf);
+
+    in.line = 1;
+    in.current = "\"hel\"  +\t\nlo"; /* unquoted the second part */
+    assert_int_equal(LY_EVALID, get_argument(YCTX, Y_STR_ARG, NULL, &word, &buf, &len));
+    CHECK_LOG_CTX("Both string parts divided by '+' must be quoted.", "Line number 2.");
+
+    TEST_GET_ARGUMENT_SUCCESS("\'he\'\t\n+ \"llo\"", YCTX, Y_STR_ARG, "hello", 5, "", 2);
+    free(buf);
+
+    TEST_GET_ARGUMENT_SUCCESS(" \t\n\"he\"+\'llo\'", YCTX, Y_STR_ARG, "hello", 5, "", 2);
+    free(buf);
+
+    /* missing argument */
+    in.line = 1;
+    in.current = ";";
+    assert_int_equal(LY_EVALID, get_argument(YCTX, Y_STR_ARG, NULL, &word, &buf, &len));
+    CHECK_LOG_CTX("Invalid character sequence \";\", expected an argument.", "Line number 1.");
+}
+
+#define TEST_STMS_SUCCESS(INPUT_TEXT, CTX, ACTION, EXPECT_WORD)\
+                   in.current = INPUT_TEXT;\
+                   assert_int_equal(LY_SUCCESS, get_keyword(CTX, &kw, &word, &len));\
+                   assert_int_equal(ACTION, kw);\
+                   assert_int_equal(strlen(EXPECT_WORD), len);\
+                   assert_true(0 == strncmp(EXPECT_WORD, word, len))
+
+static void
+test_stmts(void **state)
+{
+    const char *p;
+    enum ly_stmt kw;
+    char *word;
+    size_t len;
+
+    in.current = "\n// comment\n\tinput\t{";
+    assert_int_equal(LY_SUCCESS, get_keyword(YCTX, &kw, &word, &len));
+    assert_int_equal(LY_STMT_INPUT, kw);
+    assert_int_equal(5, len);
+    assert_string_equal("input\t{", word);
+    assert_string_equal("\t{", in.current);
+
+    in.current = "\t /* comment */\t output\n\t{";
+    assert_int_equal(LY_SUCCESS, get_keyword(YCTX, &kw, &word, &len));
+    assert_int_equal(LY_STMT_OUTPUT, kw);
+    assert_int_equal(6, len);
+    assert_string_equal("output\n\t{", word);
+    assert_string_equal("\n\t{", in.current);
+    assert_int_equal(LY_SUCCESS, get_keyword(YCTX, &kw, &word, &len));
+    assert_int_equal(LY_STMT_SYNTAX_LEFT_BRACE, kw);
+    assert_int_equal(1, len);
+    assert_string_equal("{", word);
+    assert_string_equal("", in.current);
+
+    in.current = "/input { "; /* invalid slash */
+    assert_int_equal(LY_EVALID, get_keyword(YCTX, &kw, &word, &len));
+    CHECK_LOG_CTX("Invalid identifier first character '/'.", "Line number 4.");
+
+    in.current = "not-a-statement-nor-extension { "; /* invalid identifier */
+    assert_int_equal(LY_EVALID, get_keyword(YCTX, &kw, &word, &len));
+    CHECK_LOG_CTX("Invalid character sequence \"not-a-statement-nor-extension\", expected a keyword.", "Line number 4.");
+
+    in.current = "path;"; /* missing sep after the keyword */
+    assert_int_equal(LY_EVALID, get_keyword(YCTX, &kw, &word, &len));
+    CHECK_LOG_CTX("Invalid character sequence \"path;\", expected a keyword followed by a separator.", "Line number 4.");
+
+    TEST_STMS_SUCCESS("action ", YCTX, LY_STMT_ACTION, "action");
+
+    TEST_STMS_SUCCESS("anydata ", YCTX, LY_STMT_ANYDATA, "anydata");
+    TEST_STMS_SUCCESS("anyxml ", YCTX, LY_STMT_ANYXML, "anyxml");
+    TEST_STMS_SUCCESS("argument ", YCTX, LY_STMT_ARGUMENT, "argument");
+    TEST_STMS_SUCCESS("augment ", YCTX, LY_STMT_AUGMENT, "augment");
+    TEST_STMS_SUCCESS("base ", YCTX, LY_STMT_BASE, "base");
+    TEST_STMS_SUCCESS("belongs-to ", YCTX, LY_STMT_BELONGS_TO, "belongs-to");
+    TEST_STMS_SUCCESS("bit ", YCTX, LY_STMT_BIT, "bit");
+    TEST_STMS_SUCCESS("case ", YCTX, LY_STMT_CASE, "case");
+    TEST_STMS_SUCCESS("choice ", YCTX, LY_STMT_CHOICE, "choice");
+    TEST_STMS_SUCCESS("config ", YCTX, LY_STMT_CONFIG, "config");
+    TEST_STMS_SUCCESS("contact ", YCTX, LY_STMT_CONTACT, "contact");
+    TEST_STMS_SUCCESS("container ", YCTX, LY_STMT_CONTAINER, "container");
+    TEST_STMS_SUCCESS("default ", YCTX, LY_STMT_DEFAULT, "default");
+    TEST_STMS_SUCCESS("description ", YCTX, LY_STMT_DESCRIPTION, "description");
+    TEST_STMS_SUCCESS("deviate ", YCTX, LY_STMT_DEVIATE, "deviate");
+    TEST_STMS_SUCCESS("deviation ", YCTX, LY_STMT_DEVIATION, "deviation");
+    TEST_STMS_SUCCESS("enum ", YCTX, LY_STMT_ENUM, "enum");
+    TEST_STMS_SUCCESS("error-app-tag ", YCTX, LY_STMT_ERROR_APP_TAG, "error-app-tag");
+    TEST_STMS_SUCCESS("error-message ", YCTX, LY_STMT_ERROR_MESSAGE, "error-message");
+    TEST_STMS_SUCCESS("extension ", YCTX, LY_STMT_EXTENSION, "extension");
+    TEST_STMS_SUCCESS("feature ", YCTX, LY_STMT_FEATURE, "feature");
+    TEST_STMS_SUCCESS("fraction-digits ", YCTX, LY_STMT_FRACTION_DIGITS, "fraction-digits");
+    TEST_STMS_SUCCESS("grouping ", YCTX, LY_STMT_GROUPING, "grouping");
+    TEST_STMS_SUCCESS("identity ", YCTX, LY_STMT_IDENTITY, "identity");
+    TEST_STMS_SUCCESS("if-feature ", YCTX, LY_STMT_IF_FEATURE, "if-feature");
+    TEST_STMS_SUCCESS("import ", YCTX, LY_STMT_IMPORT, "import");
+    TEST_STMS_SUCCESS("include ", YCTX, LY_STMT_INCLUDE, "include");
+    TEST_STMS_SUCCESS("input{", YCTX, LY_STMT_INPUT, "input");
+    TEST_STMS_SUCCESS("key ", YCTX, LY_STMT_KEY, "key");
+    TEST_STMS_SUCCESS("leaf ", YCTX, LY_STMT_LEAF, "leaf");
+    TEST_STMS_SUCCESS("leaf-list ", YCTX, LY_STMT_LEAF_LIST, "leaf-list");
+    TEST_STMS_SUCCESS("length ", YCTX, LY_STMT_LENGTH, "length");
+    TEST_STMS_SUCCESS("list ", YCTX, LY_STMT_LIST, "list");
+    TEST_STMS_SUCCESS("mandatory ", YCTX, LY_STMT_MANDATORY, "mandatory");
+    TEST_STMS_SUCCESS("max-elements ", YCTX, LY_STMT_MAX_ELEMENTS, "max-elements");
+    TEST_STMS_SUCCESS("min-elements ", YCTX, LY_STMT_MIN_ELEMENTS, "min-elements");
+    TEST_STMS_SUCCESS("modifier ", YCTX, LY_STMT_MODIFIER, "modifier");
+    TEST_STMS_SUCCESS("module ", YCTX, LY_STMT_MODULE, "module");
+    TEST_STMS_SUCCESS("must ", YCTX, LY_STMT_MUST, "must");
+    TEST_STMS_SUCCESS("namespace ", YCTX, LY_STMT_NAMESPACE, "namespace");
+    TEST_STMS_SUCCESS("notification ", YCTX, LY_STMT_NOTIFICATION, "notification");
+    TEST_STMS_SUCCESS("ordered-by ", YCTX, LY_STMT_ORDERED_BY, "ordered-by");
+    TEST_STMS_SUCCESS("organization ", YCTX, LY_STMT_ORGANIZATION, "organization");
+    TEST_STMS_SUCCESS("output ", YCTX, LY_STMT_OUTPUT, "output");
+    TEST_STMS_SUCCESS("path ", YCTX, LY_STMT_PATH, "path");
+    TEST_STMS_SUCCESS("pattern ", YCTX, LY_STMT_PATTERN, "pattern");
+    TEST_STMS_SUCCESS("position ", YCTX, LY_STMT_POSITION, "position");
+    TEST_STMS_SUCCESS("prefix ", YCTX, LY_STMT_PREFIX, "prefix");
+    TEST_STMS_SUCCESS("presence ", YCTX, LY_STMT_PRESENCE, "presence");
+    TEST_STMS_SUCCESS("range ", YCTX, LY_STMT_RANGE, "range");
+    TEST_STMS_SUCCESS("reference ", YCTX, LY_STMT_REFERENCE, "reference");
+    TEST_STMS_SUCCESS("refine ", YCTX, LY_STMT_REFINE, "refine");
+    TEST_STMS_SUCCESS("require-instance ", YCTX, LY_STMT_REQUIRE_INSTANCE, "require-instance");
+    TEST_STMS_SUCCESS("revision ", YCTX, LY_STMT_REVISION, "revision");
+    TEST_STMS_SUCCESS("revision-date ", YCTX, LY_STMT_REVISION_DATE, "revision-date");
+    TEST_STMS_SUCCESS("rpc ", YCTX, LY_STMT_RPC, "rpc");
+    TEST_STMS_SUCCESS("status ", YCTX, LY_STMT_STATUS, "status");
+    TEST_STMS_SUCCESS("submodule ", YCTX, LY_STMT_SUBMODULE, "submodule");
+    TEST_STMS_SUCCESS("type ", YCTX, LY_STMT_TYPE, "type");
+    TEST_STMS_SUCCESS("typedef ", YCTX, LY_STMT_TYPEDEF, "typedef");
+    TEST_STMS_SUCCESS("unique ", YCTX, LY_STMT_UNIQUE, "unique");
+    TEST_STMS_SUCCESS("units ", YCTX, LY_STMT_UNITS, "units");
+    TEST_STMS_SUCCESS("uses ", YCTX, LY_STMT_USES, "uses");
+    TEST_STMS_SUCCESS("value ", YCTX, LY_STMT_VALUE, "value");
+    TEST_STMS_SUCCESS("when ", YCTX, LY_STMT_WHEN, "when");
+    TEST_STMS_SUCCESS("yang-version ", YCTX, LY_STMT_YANG_VERSION, "yang-version");
+    TEST_STMS_SUCCESS("yin-element ", YCTX, LY_STMT_YIN_ELEMENT, "yin-element");
+    TEST_STMS_SUCCESS(";config false;", YCTX, LY_STMT_SYNTAX_SEMICOLON, ";");
+    assert_string_equal("config false;", in.current);
+    TEST_STMS_SUCCESS("{ config false;", YCTX, LY_STMT_SYNTAX_LEFT_BRACE, "{");
+    assert_string_equal(" config false;", in.current);
+    TEST_STMS_SUCCESS("}", YCTX, LY_STMT_SYNTAX_RIGHT_BRACE, "}");
+    assert_string_equal("", in.current);
+
+    /* geenric extension */
+    in.current = p = "nacm:default-deny-write;";
+    assert_int_equal(LY_SUCCESS, get_keyword(YCTX, &kw, &word, &len));
+    assert_int_equal(LY_STMT_EXTENSION_INSTANCE, kw);
+    assert_int_equal(23, len);
+    assert_ptr_equal(p, word);
+}
+
+static void
+test_minmax(void **state)
+{
+    uint16_t flags = 0;
+    uint32_t value = 0;
+    struct lysp_ext_instance *ext = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 2; /* simulate YANG 1.1 */
+
+    in.current = " 1invalid; ...";
+    assert_int_equal(LY_EVALID, parse_minelements(YCTX, &value, &flags, &ext));
+    CHECK_LOG_CTX("Invalid value \"1invalid\" of \"min-elements\".", "Line number 1.");
+
+    flags = value = 0;
+    in.current = " -1; ...";
+    assert_int_equal(LY_EVALID, parse_minelements(YCTX, &value, &flags, &ext));
+    CHECK_LOG_CTX("Invalid value \"-1\" of \"min-elements\".", "Line number 1.");
+
+    /* implementation limit */
+    flags = value = 0;
+    in.current = " 4294967296; ...";
+    assert_int_equal(LY_EVALID, parse_minelements(YCTX, &value, &flags, &ext));
+    CHECK_LOG_CTX("Value \"4294967296\" is out of \"min-elements\" bounds.", "Line number 1.");
+
+    flags = value = 0;
+    in.current = " 1 {config true;} ...";
+    assert_int_equal(LY_EVALID, parse_minelements(YCTX, &value, &flags, &ext));
+    CHECK_LOG_CTX("Invalid keyword \"config\" as a child of \"min-elements\".", "Line number 1.");
+
+    in.current = " 1invalid; ...";
+    assert_int_equal(LY_EVALID, parse_maxelements(YCTX, &value, &flags, &ext));
+    CHECK_LOG_CTX("Invalid value \"1invalid\" of \"max-elements\".", "Line number 1.");
+
+    flags = value = 0;
+    in.current = " -1; ...";
+    assert_int_equal(LY_EVALID, parse_maxelements(YCTX, &value, &flags, &ext));
+    CHECK_LOG_CTX("Invalid value \"-1\" of \"max-elements\".", "Line number 1.");
+
+    /* implementation limit */
+    flags = value = 0;
+    in.current = " 4294967296; ...";
+    assert_int_equal(LY_EVALID, parse_maxelements(YCTX, &value, &flags, &ext));
+    CHECK_LOG_CTX("Value \"4294967296\" is out of \"max-elements\" bounds.", "Line number 1.");
+
+    flags = value = 0;
+    in.current = " 1 {config true;} ...";
+    assert_int_equal(LY_EVALID, parse_maxelements(YCTX, &value, &flags, &ext));
+    CHECK_LOG_CTX("Invalid keyword \"config\" as a child of \"max-elements\".", "Line number 1.");
+}
+
+static void
+test_valid_module(void **state)
+{
+    struct lys_module *mod;
+    char *printed;
+    const char *links_yang =
+            "module links {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"urn:module2\";\n"
+            "  prefix mod2;\n"
+            "\n"
+            "  identity just-another-identity;\n"
+            "\n"
+            "  leaf one-leaf {\n"
+            "    type string;\n"
+            "  }\n"
+            "\n"
+            "  list list-for-augment {\n"
+            "    key keyleaf;\n"
+            "\n"
+            "    leaf keyleaf {\n"
+            "      type string;\n"
+            "    }\n"
+            "\n"
+            "    leaf just-leaf {\n"
+            "      type int32;\n"
+            "    }\n"
+            "  }\n"
+            "\n"
+            "  leaf rleaf {\n"
+            "    type string;\n"
+            "  }\n"
+            "\n"
+            "  leaf-list llist {\n"
+            "    type string;\n"
+            "    min-elements 0;\n"
+            "    max-elements 100;\n"
+            "    ordered-by user;\n"
+            "  }\n"
+            "\n"
+            "  grouping rgroup {\n"
+            "    leaf rg1 {\n"
+            "      type string;\n"
+            "    }\n"
+            "\n"
+            "    leaf rg2 {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+    const char *statements_yang =
+            "module statements {\n"
+            "  yang-version 1.1;\n"
+            "  namespace \"urn:module\";\n"
+            "  prefix mod;\n"
+            "\n"
+            "  import links {\n"
+            "    prefix mod2;\n"
+            "  }\n"
+            "\n"
+            "  extension ext;\n"
+            "\n"
+            "  identity random-identity {\n"
+            "    base mod2:just-another-identity;\n"
+            "    base another-identity;\n"
+            "  }\n"
+            "\n"
+            "  identity another-identity {\n"
+            "    base mod2:just-another-identity;\n"
+            "  }\n"
+            "\n"
+            "  typedef percent {\n"
+            "    type uint8 {\n"
+            "      range \"0 .. 100\";\n"
+            "    }\n"
+            "    units \"percent\";\n"
+            "  }\n"
+            "\n"
+            "  list list1 {\n"
+            "    key \"a\";\n"
+            "    leaf a {\n"
+            "      type string;\n"
+            "    }\n"
+            "    leaf x {\n"
+            "      type string;\n"
+            "    }\n"
+            "    leaf y {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n"
+            "  container ice-cream-shop {\n"
+            "    container employees {\n"
+            "      when \"/list1/x\";\n"
+            "      list employee {\n"
+            "        key \"id\";\n"
+            "        unique \"name\";\n"
+            "        config true;\n"
+            "        min-elements 0 {\n"
+            "          mod:ext;\n"
+            "        }\n"
+            "        max-elements unbounded;\n"
+            "        leaf id {\n"
+            "          type uint64;\n"
+            "          mandatory true;\n"
+            "        }\n"
+            "        leaf name {\n"
+            "          type string;\n"
+            "        }\n"
+            "        leaf age {\n"
+            "          type uint32;\n"
+            "        }\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "  container random {\n"
+            "    grouping group {\n"
+            "      leaf g1 {\n"
+            "        type percent;\n"
+            "        mandatory false;\n"
+            "      }\n"
+            "      leaf g2 {\n"
+            "        type string;\n"
+            "      }\n"
+            "    }\n"
+            "    choice switch {\n"
+            "      case a {\n"
+            "        leaf aleaf {\n"
+            "          type string;\n"
+            "          default \"aaa\";\n"
+            "        }\n"
+            "      }\n"
+            "      case c {\n"
+            "        leaf cleaf {\n"
+            "          type string;\n"
+            "        }\n"
+            "      }\n"
+            "    }\n"
+            "    anyxml xml-data;\n"
+            "    anydata any-data;\n"
+            "    leaf-list leaflist {\n"
+            "      type string;\n"
+            "      min-elements 0;\n"
+            "      max-elements 20;\n"
+            "    }\n"
+            "    uses group;\n"
+            "    uses mod2:rgroup;\n"
+            "    leaf lref {\n"
+            "      type leafref {\n"
+            "        path \"/mod2:one-leaf\";\n"
+            "      }\n"
+            "    }\n"
+            "    leaf iref {\n"
+            "      type identityref {\n"
+            "        base mod2:just-another-identity;\n"
+            "      }\n"
+            "    }\n"
+            "  }\n"
+            "\n"
+            "  augment \"/random\" {\n"
+            "    leaf aug-leaf {\n"
+            "      type string;\n"
+            "    }\n"
+            "  }\n"
+            "\n"
+            "  notification notif;\n"
+            "\n"
+            "  deviation \"/mod:ice-cream-shop/mod:employees/mod:employee/mod:age\" {\n"
+            "    deviate not-supported {\n"
+            "      mod:ext;\n"
+            "    }\n"
+            "  }\n"
+            "  deviation \"/mod:list1\" {\n"
+            "    deviate add {\n"
+            "      mod:ext;\n"
+            "      must \"1\";\n"
+            "      must \"2\";\n"
+            "      unique \"x\";\n"
+            "      unique \"y\";\n"
+            "      config true;\n"
+            "      min-elements 1;\n"
+            "      max-elements 2;\n"
+            "    }\n"
+            "  }\n"
+            "  deviation \"/mod:ice-cream-shop/mod:employees/mod:employee\" {\n"
+            "    deviate delete {\n"
+            "      unique \"name\";\n"
+            "    }\n"
+            "  }\n"
+            "  deviation \"/mod:random/mod:leaflist\" {\n"
+            "    deviate replace {\n"
+            "      type uint32;\n"
+            "      min-elements 10;\n"
+            "      max-elements 15;\n"
+            "    }\n"
+            "  }\n"
+            "}\n";
+
+    UTEST_ADD_MODULE(links_yang, LYS_IN_YANG, NULL, NULL);
+    UTEST_ADD_MODULE(statements_yang, LYS_IN_YANG, NULL, &mod);
+    lys_print_mem(&printed, mod, LYS_OUT_YANG, 0);
+    assert_string_equal(printed, statements_yang);
+    free(printed);
+}
+
+static struct lysp_module *
+mod_renew(struct lysp_yang_ctx *ctx)
+{
+    struct ly_ctx *ly_ctx = PARSER_CUR_PMOD(ctx)->mod->ctx;
+    struct lysp_module *pmod;
+
+    lys_module_free(&fctx, PARSER_CUR_PMOD(ctx)->mod, 0);
+    pmod = calloc(1, sizeof *pmod);
+    ctx->parsed_mods->objs[0] = pmod;
+    pmod->mod = calloc(1, sizeof *pmod->mod);
+    pmod->mod->parsed = pmod;
+    pmod->mod->ctx = ly_ctx;
+
+    ctx->in->line = 1;
+    fctx.mod = pmod->mod;
+
+    return pmod;
+}
+
+static struct lysp_submodule *
+submod_renew(struct lysp_yang_ctx *ctx)
+{
+    struct ly_ctx *ly_ctx = PARSER_CUR_PMOD(ctx)->mod->ctx;
+    struct lysp_submodule *submod;
+
+    lys_module_free(&fctx, PARSER_CUR_PMOD(ctx)->mod, 0);
+    submod = calloc(1, sizeof *submod);
+    ctx->parsed_mods->objs[0] = submod;
+    submod->mod = calloc(1, sizeof *submod->mod);
+    lydict_insert(ly_ctx, "name", 0, &submod->mod->name);
+    submod->mod->parsed = (struct lysp_module *)submod;
+    submod->mod->ctx = ly_ctx;
+
+    fctx.mod = submod->mod;
+
+    return submod;
+}
+
+static LY_ERR
+test_imp_clb(const char *UNUSED(mod_name), const char *UNUSED(mod_rev), const char *UNUSED(submod_name),
+        const char *UNUSED(sub_rev), void *user_data, LYS_INFORMAT *format,
+        const char **module_data, void (**free_module_data)(void *model_data, void *user_data))
+{
+    *module_data = user_data;
+    *format = LYS_IN_YANG;
+    *free_module_data = NULL;
+    return LY_SUCCESS;
+}
+
+static void
+test_module(void **state)
+{
+    struct lysp_module *mod = NULL;
+    struct lysp_submodule *submod = NULL;
+    struct lys_module *m;
+    struct lysp_yang_ctx *ctx_p;
+
+    mod = mod_renew(YCTX);
+
+    /* missing mandatory substatements */
+    in.current = " name {}";
+    assert_int_equal(LY_EVALID, parse_module(YCTX, mod));
+    assert_string_equal("name", mod->mod->name);
+    CHECK_LOG_CTX("Missing mandatory keyword \"namespace\" as a child of \"module\".", "Line number 1.");
+
+    mod = mod_renew(YCTX);
+    in.current = " name {namespace urn:name;}";
+    assert_int_equal(LY_EVALID, parse_module(YCTX, mod));
+    assert_string_equal("urn:name", mod->mod->ns);
+    CHECK_LOG_CTX("Missing mandatory keyword \"prefix\" as a child of \"module\".", "Line number 1.");
+    mod = mod_renew(YCTX);
+
+    in.current = " name {namespace urn:name;prefix \"n\";}";
+    assert_int_equal(LY_SUCCESS, parse_module(YCTX, mod));
+    assert_string_equal("n", mod->mod->prefix);
+    mod = mod_renew(YCTX);
+
+#define SCHEMA_BEGINNING " name {yang-version 1.1;namespace urn:x;prefix \"x\";"
+#define SCHEMA_BEGINNING2 " name {namespace urn:x;prefix \"x\";"
+#define TEST_NODE(NODETYPE, INPUT, NAME) \
+        in.current = SCHEMA_BEGINNING INPUT; \
+        assert_int_equal(LY_SUCCESS, parse_module(YCTX, mod)); \
+        assert_non_null(mod->data); \
+        assert_int_equal(NODETYPE, mod->data->nodetype); \
+        assert_string_equal(NAME, mod->data->name); \
+        mod = mod_renew(YCTX);
+#define TEST_GENERIC(INPUT, TARGET, TEST) \
+        in.current = SCHEMA_BEGINNING INPUT; \
+        assert_int_equal(LY_SUCCESS, parse_module(YCTX, mod)); \
+        assert_non_null(TARGET); \
+        TEST; \
+        mod = mod_renew(YCTX);
+#define TEST_DUP(MEMBER, VALUE1, VALUE2, LINE) \
+        TEST_DUP_GENERIC(SCHEMA_BEGINNING, MEMBER, VALUE1, VALUE2, \
+                         parse_module, mod, LINE, mod = mod_renew(YCTX))
+
+    /* duplicated namespace, prefix */
+    TEST_DUP("namespace", "y", "z", "1");
+    TEST_DUP("prefix", "y", "z", "1");
+    TEST_DUP("contact", "a", "b", "1");
+    TEST_DUP("description", "a", "b", "1");
+    TEST_DUP("organization", "a", "b", "1");
+    TEST_DUP("reference", "a", "b", "1");
+
+    /* not allowed in module (submodule-specific) */
+    in.current = SCHEMA_BEGINNING "belongs-to master {prefix m;}}";
+    assert_int_equal(LY_EVALID, parse_module(YCTX, mod));
+    CHECK_LOG_CTX("Invalid keyword \"belongs-to\" as a child of \"module\".", "Line number 1.");
+    mod = mod_renew(YCTX);
+
+    /* anydata */
+    TEST_NODE(LYS_ANYDATA, "anydata test;}", "test");
+    /* anyxml */
+    TEST_NODE(LYS_ANYXML, "anyxml test;}", "test");
+    /* augment */
+    TEST_GENERIC("augment /somepath;}", mod->augments,
+            assert_string_equal("/somepath", mod->augments[0].nodeid));
+    /* choice */
+    TEST_NODE(LYS_CHOICE, "choice test;}", "test");
+    /* contact 0..1 */
+    TEST_GENERIC("contact \"firstname\" + \n\t\" surname\";}", mod->mod->contact,
+            assert_string_equal("firstname surname", mod->mod->contact));
+    /* container */
+    TEST_NODE(LYS_CONTAINER, "container test;}", "test");
+    /* description 0..1 */
+    TEST_GENERIC("description \'some description\';}", mod->mod->dsc,
+            assert_string_equal("some description", mod->mod->dsc));
+    /* deviation */
+    TEST_GENERIC("deviation /somepath {deviate not-supported;}}", mod->deviations,
+            assert_string_equal("/somepath", mod->deviations[0].nodeid));
+    /* extension */
+    TEST_GENERIC("extension test;}", mod->extensions,
+            assert_string_equal("test", mod->extensions[0].name));
+    /* feature */
+    TEST_GENERIC("feature test;}", mod->features,
+            assert_string_equal("test", mod->features[0].name));
+    /* grouping */
+    TEST_GENERIC("grouping grp;}", mod->groupings,
+            assert_string_equal("grp", mod->groupings[0].name));
+    /* identity */
+    TEST_GENERIC("identity test;}", mod->identities,
+            assert_string_equal("test", mod->identities[0].name));
+    /* import */
+    ly_ctx_set_module_imp_clb(PARSER_CUR_PMOD(YCTX)->mod->ctx, test_imp_clb, "module zzz { namespace urn:zzz; prefix z;}");
+    TEST_GENERIC("import zzz {prefix z;}}", mod->imports,
+            assert_string_equal("zzz", mod->imports[0].name));
+
+    /* import - prefix collision */
+    in.current = SCHEMA_BEGINNING "import zzz {prefix x;}}";
+    assert_int_equal(LY_EVALID, parse_module(YCTX, mod));
+    CHECK_LOG_CTX("Prefix \"x\" already used as module prefix.", "Line number 1.");
+    mod = mod_renew(YCTX);
+
+    in.current = SCHEMA_BEGINNING "import zzz {prefix y;}import zzz {prefix y;}}";
+    assert_int_equal(LY_EVALID, parse_module(YCTX, mod));
+    CHECK_LOG_CTX("Prefix \"y\" already used to import \"zzz\" module.", "Line number 1.");
+
+    mod = mod_renew(YCTX);
+    LOG_LOCBACK(0, 0, 0, 1);
+
+    in.current = "module name10 {yang-version 1.1;namespace urn:name10;prefix \"n10\";import zzz {prefix y;}import zzz {prefix z;}}";
+    assert_int_equal(lys_parse_mem(PARSER_CUR_PMOD(YCTX)->mod->ctx, in.current, LYS_IN_YANG, NULL), LY_SUCCESS);
+    CHECK_LOG_CTX("Single revision of the module \"zzz\" imported twice.", NULL);
+
+    /* include */
+    ly_ctx_set_module_imp_clb(PARSER_CUR_PMOD(YCTX)->mod->ctx, test_imp_clb, "module xxx { namespace urn:xxx; prefix x;}");
+    in.current = "module" SCHEMA_BEGINNING "include xxx;}";
+    assert_int_equal(lys_parse_mem(PARSER_CUR_PMOD(YCTX)->mod->ctx, in.current, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"name\" failed.", NULL, "Including \"xxx\" submodule into \"name\" failed.", NULL);
+
+    ly_ctx_set_module_imp_clb(PARSER_CUR_PMOD(YCTX)->mod->ctx, test_imp_clb, "submodule xxx {belongs-to wrong-name {prefix w;}}");
+    in.current = "module" SCHEMA_BEGINNING "include xxx;}";
+    assert_int_equal(lys_parse_mem(PARSER_CUR_PMOD(YCTX)->mod->ctx, in.current, LYS_IN_YANG, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"name\" failed.", NULL, "Including \"xxx\" submodule into \"name\" failed.", NULL);
+
+    ly_ctx_set_module_imp_clb(PARSER_CUR_PMOD(YCTX)->mod->ctx, test_imp_clb, "submodule xxx {belongs-to name {prefix x;}}");
+    TEST_GENERIC("include xxx;}", mod->includes,
+            assert_string_equal("xxx", mod->includes[0].name));
+
+    /* leaf */
+    TEST_NODE(LYS_LEAF, "leaf test {type string;}}", "test");
+    /* leaf-list */
+    TEST_NODE(LYS_LEAFLIST, "leaf-list test {type string;}}", "test");
+    /* list */
+    TEST_NODE(LYS_LIST, "list test {key a;leaf a {type string;}}}", "test");
+    /* notification */
+    TEST_GENERIC("notification test;}", mod->notifs,
+            assert_string_equal("test", mod->notifs[0].name));
+    /* organization 0..1 */
+    TEST_GENERIC("organization \"CESNET a.l.e.\";}", mod->mod->org,
+            assert_string_equal("CESNET a.l.e.", mod->mod->org));
+    /* reference 0..1 */
+    TEST_GENERIC("reference RFC7950;}", mod->mod->ref,
+            assert_string_equal("RFC7950", mod->mod->ref));
+    /* revision */
+    TEST_GENERIC("revision 2018-10-12;}", mod->revs,
+            assert_string_equal("2018-10-12", mod->revs[0].date));
+    /* rpc */
+    TEST_GENERIC("rpc test;}", mod->rpcs,
+            assert_string_equal("test", mod->rpcs[0].name));
+    /* typedef */
+    TEST_GENERIC("typedef test{type string;}}", mod->typedefs,
+            assert_string_equal("test", mod->typedefs[0].name));
+    /* uses */
+    TEST_NODE(LYS_USES, "uses test;}", "test");
+    /* yang-version */
+    in.current = SCHEMA_BEGINNING2 "\n\tyang-version 10;}";
+    assert_int_equal(LY_EVALID, parse_module(YCTX, mod));
+    CHECK_LOG_CTX("Invalid value \"10\" of \"yang-version\".", NULL);
+    mod = mod_renew(YCTX);
+    in.current = SCHEMA_BEGINNING2 "yang-version 1;yang-version 1.1;}";
+    assert_int_equal(LY_EVALID, parse_module(YCTX, mod));
+    CHECK_LOG_CTX("Duplicate keyword \"yang-version\".", NULL);
+    mod = mod_renew(YCTX);
+    in.current = SCHEMA_BEGINNING2 "yang-version 1;}";
+    assert_int_equal(LY_SUCCESS, parse_module(YCTX, mod));
+    assert_int_equal(1, mod->version);
+    mod = mod_renew(YCTX);
+    in.current = SCHEMA_BEGINNING2 "yang-version \"1.1\";}";
+    assert_int_equal(LY_SUCCESS, parse_module(YCTX, mod));
+    assert_int_equal(2, mod->version);
+    mod = mod_renew(YCTX);
+
+    in.current = "module " SCHEMA_BEGINNING "} module q {namespace urn:q;prefixq;}";
+    m = calloc(1, sizeof *m);
+    m->ctx = PARSER_CUR_PMOD(YCTX)->mod->ctx;
+    assert_int_equal(LY_EVALID, yang_parse_module(&ctx_p, &in, m));
+    CHECK_LOG_CTX("Trailing garbage \"module q {names...\" after module, expected end-of-input.", "Line number 1.");
+    lysp_yang_ctx_free(ctx_p);
+    lys_module_free(&fctx, m, 0);
+
+    in.current = "prefix " SCHEMA_BEGINNING "}";
+    m = calloc(1, sizeof *m);
+    m->ctx = PARSER_CUR_PMOD(YCTX)->mod->ctx;
+    assert_int_equal(LY_EVALID, yang_parse_module(&ctx_p, &in, m));
+    CHECK_LOG_CTX("Invalid keyword \"prefix\", expected \"module\" or \"submodule\".", "Line number 1.");
+    lysp_yang_ctx_free(ctx_p);
+    lys_module_free(&fctx, m, 0);
+
+    in.current = "module " SCHEMA_BEGINNING "leaf enum {type enumeration {enum seven { position 7;}}}}";
+    m = calloc(1, sizeof *m);
+    m->ctx = PARSER_CUR_PMOD(YCTX)->mod->ctx;
+    assert_int_equal(LY_EVALID, yang_parse_module(&ctx_p, &in, m));
+    CHECK_LOG_CTX("Invalid keyword \"position\" as a child of \"enum\".", "Line number 1.");
+    lysp_yang_ctx_free(ctx_p);
+    lys_module_free(&fctx, m, 0);
+
+    /* extensions */
+    TEST_GENERIC("prefix:test;}", mod->exts,
+            assert_string_equal("prefix:test", mod->exts[0].name);
+            assert_int_equal(LY_STMT_MODULE, mod->exts[0].parent_stmt));
+    mod = mod_renew(YCTX);
+
+    /* invalid substatement */
+    in.current = SCHEMA_BEGINNING "must false;}";
+    assert_int_equal(LY_EVALID, parse_module(YCTX, mod));
+    CHECK_LOG_CTX("Invalid keyword \"must\" as a child of \"module\".", NULL);
+
+    /* submodule */
+    submod = submod_renew(YCTX);
+
+    /* missing mandatory substatements */
+    in.current = " subname {}";
+    assert_int_equal(LY_EVALID, parse_submodule(YCTX, submod));
+    CHECK_LOG_CTX("Missing mandatory keyword \"belongs-to\" as a child of \"submodule\".", NULL);
+    assert_string_equal("subname", submod->name);
+
+    submod = submod_renew(YCTX);
+
+    in.current = " subname {belongs-to name {prefix x;}}";
+    assert_int_equal(LY_SUCCESS, parse_submodule(YCTX, submod));
+    assert_string_equal("name", submod->mod->name);
+    submod = submod_renew(YCTX);
+
+#undef SCHEMA_BEGINNING
+#define SCHEMA_BEGINNING " subname {belongs-to name {prefix x;}"
+
+    /* duplicated namespace, prefix */
+    in.current = " subname {belongs-to name {prefix x;}belongs-to module1;belongs-to module2;} ...";
+    assert_int_equal(LY_EVALID, parse_submodule(YCTX, submod));
+    CHECK_LOG_CTX("Duplicate keyword \"belongs-to\".", NULL);
+    submod = submod_renew(YCTX);
+
+    /* not allowed in submodule (module-specific) */
+    in.current = SCHEMA_BEGINNING "namespace \"urn:z\";}";
+    assert_int_equal(LY_EVALID, parse_submodule(YCTX, submod));
+    CHECK_LOG_CTX("Invalid keyword \"namespace\" as a child of \"submodule\".", NULL);
+    submod = submod_renew(YCTX);
+    in.current = SCHEMA_BEGINNING "prefix m;}}";
+    assert_int_equal(LY_EVALID, parse_submodule(YCTX, submod));
+    CHECK_LOG_CTX("Invalid keyword \"prefix\" as a child of \"submodule\".", NULL);
+    submod = submod_renew(YCTX);
+
+    in.current = "submodule " SCHEMA_BEGINNING "} module q {namespace urn:q;prefixq;}";
+    assert_int_equal(LY_EVALID, yang_parse_submodule(&ctx_p, PARSER_CUR_PMOD(YCTX)->mod->ctx, (struct lysp_ctx *)YCTX, YCTX->in, &submod));
+    CHECK_LOG_CTX("Trailing garbage \"module q {names...\" after submodule, expected end-of-input.", "Line number 1.");
+    lysp_yang_ctx_free(ctx_p);
+
+    in.current = "prefix " SCHEMA_BEGINNING "}";
+    assert_int_equal(LY_EVALID, yang_parse_submodule(&ctx_p, PARSER_CUR_PMOD(YCTX)->mod->ctx, (struct lysp_ctx *)YCTX, YCTX->in, &submod));
+    CHECK_LOG_CTX("Invalid keyword \"prefix\", expected \"module\" or \"submodule\".", "Line number 1.");
+    lysp_yang_ctx_free(ctx_p);
+    submod = submod_renew(YCTX);
+
+#undef TEST_GENERIC
+#undef TEST_NODE
+#undef TEST_DUP
+#undef SCHEMA_BEGINNING
+}
+
+static void
+test_deviation(void **state)
+{
+    struct lysp_deviation *d = NULL;
+
+    /* invalid cardinality */
+    TEST_DUP_GENERIC(" test {deviate not-supported;", "description", "a", "b", parse_deviation, &d, "1", );
+    TEST_DUP_GENERIC(" test {deviate not-supported;", "reference", "a", "b", parse_deviation, &d, "1", );
+
+    /* missing mandatory substatement */
+    in.current = " test {description text;}";
+    assert_int_equal(LY_EVALID, parse_deviation(YCTX, &d));
+    CHECK_LOG_CTX("Missing mandatory keyword \"deviate\" as a child of \"deviation\".", "Line number 1.");
+
+    /* invalid substatement */
+    in.current = " test {deviate not-supported; status obsolete;}";
+    assert_int_equal(LY_EVALID, parse_deviation(YCTX, &d));
+    CHECK_LOG_CTX("Invalid keyword \"status\" as a child of \"deviation\".", "Line number 1.");
+}
+
+static void
+test_deviate(void **state)
+{
+    struct lysp_deviate *d = NULL;
+
+    /* invalid cardinality */
+    TEST_DUP_GENERIC("add {", "config", "true", "false", parse_deviate, &d, "1", );
+    TEST_DUP_GENERIC("add {", "mandatory", "true", "false", parse_deviate, &d, "1", );
+    TEST_DUP_GENERIC("add {", "max-elements", "1", "2", parse_deviate, &d, "1", );
+    TEST_DUP_GENERIC("add {", "min-elements", "1", "2", parse_deviate, &d, "1", );
+    TEST_DUP_GENERIC("add {", "units", "kilometers", "miles", parse_deviate, &d, "1", );
+
+    /* invalid substatements */
+#define TEST_NOT_SUP(DEV, STMT, VALUE) \
+    in.current = " "DEV" {"STMT" "VALUE";}..."; \
+    assert_int_equal(LY_EVALID, parse_deviate(YCTX, &d)); \
+    CHECK_LOG_CTX("Deviate \""DEV"\" does not support keyword \""STMT"\".", "Line number 1.");
+
+    TEST_NOT_SUP("not-supported", "units", "meters");
+    TEST_NOT_SUP("not-supported", "must", "1");
+    TEST_NOT_SUP("not-supported", "unique", "x");
+    TEST_NOT_SUP("not-supported", "default", "a");
+    TEST_NOT_SUP("not-supported", "config", "true");
+    TEST_NOT_SUP("not-supported", "mandatory", "true");
+    TEST_NOT_SUP("not-supported", "min-elements", "1");
+    TEST_NOT_SUP("not-supported", "max-elements", "2");
+    TEST_NOT_SUP("not-supported", "type", "string");
+    TEST_NOT_SUP("add", "type", "string");
+    TEST_NOT_SUP("delete", "config", "true");
+    TEST_NOT_SUP("delete", "mandatory", "true");
+    TEST_NOT_SUP("delete", "min-elements", "1");
+    TEST_NOT_SUP("delete", "max-elements", "2");
+    TEST_NOT_SUP("delete", "type", "string");
+    TEST_NOT_SUP("replace", "must", "1");
+    TEST_NOT_SUP("replace", "unique", "a");
+
+    in.current = " nonsence; ...";
+    assert_int_equal(LY_EVALID, parse_deviate(YCTX, &d));
+    CHECK_LOG_CTX("Invalid value \"nonsence\" of \"deviate\".", "Line number 1.");\
+    assert_null(d);
+#undef TEST_NOT_SUP
+}
+
+static void
+test_container(void **state)
+{
+    struct lysp_node_container *c = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 2; /* simulate YANG 1.1 */
+    YCTX->main_ctx = (struct lysp_ctx *)YCTX;
+
+    /* invalid cardinality */
+#define TEST_DUP(MEMBER, VALUE1, VALUE2) \
+    in.current = "cont {" MEMBER" "VALUE1";"MEMBER" "VALUE2";} ..."; \
+    assert_int_equal(LY_EVALID, parse_container(YCTX, NULL, (struct lysp_node**)&c)); \
+    CHECK_LOG_CTX("Duplicate keyword \""MEMBER"\".", "Line number 1."); \
+    lysp_node_free(&fctx, (struct lysp_node*)c); c = NULL;
+
+    TEST_DUP("config", "true", "false");
+    TEST_DUP("description", "text1", "text2");
+    TEST_DUP("presence", "true", "false");
+    TEST_DUP("reference", "1", "2");
+    TEST_DUP("status", "current", "obsolete");
+    TEST_DUP("when", "true", "false");
+#undef TEST_DUP
+
+    /* full content */
+    in.current = "cont {action x;anydata any;anyxml anyxml; choice ch;config false;container c;description test;grouping g;if-feature f; leaf l {type string;}"
+            "leaf-list ll {type string;} list li;must 'expr';notification not; presence true; reference test;status current;typedef t {type int8;}uses g;when true;m:ext;} ...";
+    assert_int_equal(LY_SUCCESS, parse_container(YCTX, NULL, (struct lysp_node **)&c));
+    CHECK_LYSP_NODE(c, "test", 1, LYS_CONFIG_R | LYS_STATUS_CURR, 1, "cont", 0, LYS_CONTAINER, 0, "test", 1);
+    assert_non_null(c->actions);
+    assert_non_null(c->child);
+    assert_non_null(c->groupings);
+    assert_non_null(c->musts);
+    assert_non_null(c->notifs);
+    assert_string_equal("true", c->presence);
+    assert_non_null(c->typedefs);
+    ly_set_erase(&YCTX->tpdfs_nodes, NULL);
+    ly_set_erase(&YCTX->grps_nodes, NULL);
+    lysp_node_free(&fctx, (struct lysp_node *)c); c = NULL;
+
+    /* invalid */
+    in.current = " cont {augment /root;} ...";
+    assert_int_equal(LY_EVALID, parse_container(YCTX, NULL, (struct lysp_node **)&c));
+    CHECK_LOG_CTX("Invalid keyword \"augment\" as a child of \"container\".", "Line number 1.");
+    lysp_node_free(&fctx, (struct lysp_node *)c); c = NULL;
+    in.current = " cont {nonsence true;} ...";
+    assert_int_equal(LY_EVALID, parse_container(YCTX, NULL, (struct lysp_node **)&c));
+    CHECK_LOG_CTX("Invalid character sequence \"nonsence\", expected a keyword.", "Line number 1.");
+    lysp_node_free(&fctx, (struct lysp_node *)c); c = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 1; /* simulate YANG 1.0 */
+    in.current = " cont {action x;} ...";
+    assert_int_equal(LY_EVALID, parse_container(YCTX, NULL, (struct lysp_node **)&c));
+    CHECK_LOG_CTX("Invalid keyword \"action\" as a child of \"container\" - "
+            "the statement is allowed only in YANG 1.1 modules.", "Line number 1.");
+    lysp_node_free(&fctx, (struct lysp_node *)c); c = NULL;
+}
+
+static void
+test_leaf(void **state)
+{
+    struct lysp_node_leaf *l = NULL;
+
+    /* invalid cardinality */
+#define TEST_DUP(MEMBER, VALUE1, VALUE2) \
+    in.current = "l {" MEMBER" "VALUE1";"MEMBER" "VALUE2";} ..."; \
+    assert_int_equal(LY_EVALID, parse_leaf(YCTX, NULL, (struct lysp_node**)&l)); \
+    CHECK_LOG_CTX("Duplicate keyword \""MEMBER"\".", "Line number 1."); \
+    lysp_node_free(&fctx, (struct lysp_node*)l); l = NULL;
+
+    TEST_DUP("config", "true", "false");
+    TEST_DUP("default", "x", "y");
+    TEST_DUP("description", "text1", "text2");
+    TEST_DUP("mandatory", "true", "false");
+    TEST_DUP("reference", "1", "2");
+    TEST_DUP("status", "current", "obsolete");
+    TEST_DUP("type", "int8", "uint8");
+    TEST_DUP("units", "text1", "text2");
+    TEST_DUP("when", "true", "false");
+#undef TEST_DUP
+
+    /* full content - without mandatory which is mutual exclusive with default */
+    in.current = "l {config false;default \"xxx\";description test;if-feature f;"
+            "must 'expr';reference test;status current;type string; units yyy;when true;m:ext;} ...";
+    assert_int_equal(LY_SUCCESS, parse_leaf(YCTX, NULL, (struct lysp_node **)&l));
+    CHECK_LYSP_NODE(l, "test", 1, LYS_CONFIG_R | LYS_STATUS_CURR, 1, "l", 0, LYS_LEAF, 0, "test", 1);
+    assert_string_equal("xxx", l->dflt.str);
+    assert_string_equal("yyy", l->units);
+    assert_string_equal("string", l->type.name);
+    assert_non_null(l->musts);
+    lysp_node_free(&fctx, (struct lysp_node *)l); l = NULL;
+
+    /* full content - now with mandatory */
+    in.current = "l {mandatory true; type string;} ...";
+    assert_int_equal(LY_SUCCESS, parse_leaf(YCTX, NULL, (struct lysp_node **)&l));
+    CHECK_LYSP_NODE(l, NULL, 0, LYS_MAND_TRUE, 0, "l", 0, LYS_LEAF, 0, NULL, 0);
+    assert_string_equal("string", l->type.name);
+    lysp_node_free(&fctx, (struct lysp_node *)l); l = NULL;
+
+    /* invalid */
+    in.current = " l {description \"missing type\";} ...";
+    assert_int_equal(LY_EVALID, parse_leaf(YCTX, NULL, (struct lysp_node **)&l));
+    CHECK_LOG_CTX("Missing mandatory keyword \"type\" as a child of \"leaf\".", "Line number 1.");
+    lysp_node_free(&fctx, (struct lysp_node *)l); l = NULL;
+
+    in.current = "l { type iid { path qpud wrong {";
+    assert_int_equal(LY_EVALID, parse_leaf(YCTX, NULL, (struct lysp_node **)&l));
+    CHECK_LOG_CTX("Invalid character sequence \"wrong\", expected a keyword.", "Line number 1.");
+    lysp_node_free(&fctx, (struct lysp_node *)l); l = NULL;
+}
+
+static void
+test_leaflist(void **state)
+{
+    struct lysp_node_leaflist *ll = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 2; /* simulate YANG 1.1 */
+
+    /* invalid cardinality */
+#define TEST_DUP(MEMBER, VALUE1, VALUE2) \
+    in.current = "ll {" MEMBER" "VALUE1";"MEMBER" "VALUE2";} ..."; \
+    assert_int_equal(LY_EVALID, parse_leaflist(YCTX, NULL, (struct lysp_node**)&ll)); \
+    CHECK_LOG_CTX("Duplicate keyword \""MEMBER"\".", "Line number 1."); \
+    lysp_node_free(&fctx, (struct lysp_node*)ll); ll = NULL;
+
+    TEST_DUP("config", "true", "false");
+    TEST_DUP("description", "text1", "text2");
+    TEST_DUP("max-elements", "10", "20");
+    TEST_DUP("min-elements", "10", "20");
+    TEST_DUP("ordered-by", "user", "system");
+    TEST_DUP("reference", "1", "2");
+    TEST_DUP("status", "current", "obsolete");
+    TEST_DUP("type", "int8", "uint8");
+    TEST_DUP("units", "text1", "text2");
+    TEST_DUP("when", "true", "false");
+#undef TEST_DUP
+
+    /* full content - without min-elements which is mutual exclusive with default */
+    in.current = "ll {config false;default \"xxx\"; default \"yyy\";description test;if-feature f;"
+            "max-elements 10;must 'expr';ordered-by user;reference test;"
+            "status current;type string; units zzz;when true;m:ext;} ...";
+    assert_int_equal(LY_SUCCESS, parse_leaflist(YCTX, NULL, (struct lysp_node **)&ll));
+    CHECK_LYSP_NODE(ll, "test", 1, 0x446, 1, "ll", 0, LYS_LEAFLIST, 0, "test", 1);
+    assert_non_null(ll->dflts);
+    assert_int_equal(2, LY_ARRAY_COUNT(ll->dflts));
+    assert_string_equal("xxx", ll->dflts[0].str);
+    assert_string_equal("yyy", ll->dflts[1].str);
+    assert_string_equal("zzz", ll->units);
+    assert_int_equal(10, ll->max);
+    assert_int_equal(0, ll->min);
+    assert_string_equal("string", ll->type.name);
+    assert_non_null(ll->musts);
+    assert_int_equal(LYS_CONFIG_R | LYS_STATUS_CURR | LYS_ORDBY_USER | LYS_SET_MAX, ll->flags);
+    lysp_node_free(&fctx, (struct lysp_node *)ll); ll = NULL;
+
+    /* full content - now with min-elements */
+    in.current = "ll {min-elements 10; type string;} ...";
+    assert_int_equal(LY_SUCCESS, parse_leaflist(YCTX, NULL, (struct lysp_node **)&ll));
+    CHECK_LYSP_NODE(ll, NULL, 0, 0x200, 0, "ll", 0, LYS_LEAFLIST, 0, NULL, 0);
+    assert_string_equal("string", ll->type.name);
+    assert_int_equal(0, ll->max);
+    assert_int_equal(10, ll->min);
+    assert_int_equal(LYS_SET_MIN, ll->flags);
+    lysp_node_free(&fctx, (struct lysp_node *)ll); ll = NULL;
+
+    /* invalid */
+    in.current = " ll {description \"missing type\";} ...";
+    assert_int_equal(LY_EVALID, parse_leaflist(YCTX, NULL, (struct lysp_node **)&ll));
+    CHECK_LOG_CTX("Missing mandatory keyword \"type\" as a child of \"leaf-list\".", "Line number 1.");
+    lysp_node_free(&fctx, (struct lysp_node *)ll); ll = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 1; /* simulate YANG 1.0 - default statement is not allowed */
+    in.current = " ll {default xx; type string;} ...";
+    assert_int_equal(LY_EVALID, parse_leaflist(YCTX, NULL, (struct lysp_node **)&ll));
+    CHECK_LOG_CTX("Invalid keyword \"default\" as a child of \"leaf-list\" - the statement is allowed only in YANG 1.1 modules.", "Line number 1.");
+    lysp_node_free(&fctx, (struct lysp_node *)ll); ll = NULL;
+}
+
+static void
+test_list(void **state)
+{
+    struct lysp_node_list *l = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 2; /* simulate YANG 1.1 */
+    YCTX->main_ctx = (struct lysp_ctx *)YCTX;
+
+    /* invalid cardinality */
+#define TEST_DUP(MEMBER, VALUE1, VALUE2) \
+    in.current = "l {" MEMBER" "VALUE1";"MEMBER" "VALUE2";} ..."; \
+    assert_int_equal(LY_EVALID, parse_list(YCTX, NULL, (struct lysp_node**)&l)); \
+    CHECK_LOG_CTX("Duplicate keyword \""MEMBER"\".", "Line number 1."); \
+    lysp_node_free(&fctx, (struct lysp_node*)l); l = NULL;
+
+    TEST_DUP("config", "true", "false");
+    TEST_DUP("description", "text1", "text2");
+    TEST_DUP("key", "one", "two");
+    TEST_DUP("max-elements", "10", "20");
+    TEST_DUP("min-elements", "10", "20");
+    TEST_DUP("ordered-by", "user", "system");
+    TEST_DUP("reference", "1", "2");
+    TEST_DUP("status", "current", "obsolete");
+    TEST_DUP("when", "true", "false");
+#undef TEST_DUP
+
+    /* full content */
+    in.current = "l {action x;anydata any;anyxml anyxml; choice ch;config false;container c;description test;grouping g;if-feature f; key l; leaf l {type string;}"
+            "leaf-list ll {type string;} list li;max-elements 10; min-elements 1;must 'expr';notification not; ordered-by system; reference test;"
+            "status current;typedef t {type int8;}unique xxx;unique yyy;uses g;when true;m:ext;} ...";
+    assert_int_equal(LY_SUCCESS, parse_list(YCTX, NULL, (struct lysp_node **)&l));
+    CHECK_LYSP_NODE(l, "test", 1, LYS_CONFIG_R | LYS_STATUS_CURR | LYS_ORDBY_SYSTEM | LYS_SET_MAX | LYS_SET_MIN, 1, "l",
+            0, LYS_LIST, 0, "test", 1);
+    assert_string_equal("l", l->key);
+    assert_non_null(l->uniques);
+    assert_int_equal(2, LY_ARRAY_COUNT(l->uniques));
+    assert_string_equal("xxx", l->uniques[0].str);
+    assert_string_equal("yyy", l->uniques[1].str);
+    assert_int_equal(10, l->max);
+    assert_int_equal(1, l->min);
+    assert_non_null(l->musts);
+    ly_set_erase(&YCTX->tpdfs_nodes, NULL);
+    ly_set_erase(&YCTX->grps_nodes, NULL);
+    lysp_node_free(&fctx, (struct lysp_node *)l); l = NULL;
+
+    /* invalid content */
+    PARSER_CUR_PMOD(YCTX)->version = 1; /* simulate YANG 1.0 */
+    in.current = "l {action x;} ...";
+    assert_int_equal(LY_EVALID, parse_list(YCTX, NULL, (struct lysp_node **)&l));
+    CHECK_LOG_CTX("Invalid keyword \"action\" as a child of \"list\" - the statement is allowed only in YANG 1.1 modules.", "Line number 1.");
+    lysp_node_free(&fctx, (struct lysp_node *)l); l = NULL;
+}
+
+static void
+test_choice(void **state)
+{
+    struct lysp_node_choice *ch = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 2; /* simulate YANG 1.1 */
+
+    /* invalid cardinality */
+#define TEST_DUP(MEMBER, VALUE1, VALUE2) \
+    in.current = "ch {" MEMBER" "VALUE1";"MEMBER" "VALUE2";} ..."; \
+    assert_int_equal(LY_EVALID, parse_choice(YCTX, NULL, (struct lysp_node**)&ch)); \
+    CHECK_LOG_CTX("Duplicate keyword \""MEMBER"\".", "Line number 1."); \
+    lysp_node_free(&fctx, (struct lysp_node*)ch); ch = NULL;
+
+    TEST_DUP("config", "true", "false");
+    TEST_DUP("default", "a", "b");
+    TEST_DUP("description", "text1", "text2");
+    TEST_DUP("mandatory", "true", "false");
+    TEST_DUP("reference", "1", "2");
+    TEST_DUP("status", "current", "obsolete");
+    TEST_DUP("when", "true", "false");
+#undef TEST_DUP
+
+    /* full content - without default due to a collision with mandatory */
+    in.current = "ch {anydata any;anyxml anyxml; case c;choice ch;config false;container c;description test;if-feature f;leaf l {type string;}"
+            "leaf-list ll {type string;} list li;mandatory true;reference test;status current;when true;m:ext;} ...";
+    assert_int_equal(LY_SUCCESS, parse_choice(YCTX, NULL, (struct lysp_node **)&ch));
+    CHECK_LYSP_NODE(ch, "test", 1, LYS_CONFIG_R | LYS_STATUS_CURR | LYS_MAND_TRUE, 1, "ch", 0, LYS_CHOICE, 0, "test", 1);
+    lysp_node_free(&fctx, (struct lysp_node *)ch); ch = NULL;
+
+    /* full content - the default missing from the previous node */
+    in.current = "ch {default c;case c;} ...";
+    assert_int_equal(LY_SUCCESS, parse_choice(YCTX, NULL, (struct lysp_node **)&ch));
+    CHECK_LYSP_NODE(ch, NULL, 0, 0, 0, "ch", 0, LYS_CHOICE, 0, NULL, 0);
+    assert_string_equal("c", ch->dflt.str);
+    lysp_node_free(&fctx, (struct lysp_node *)ch); ch = NULL;
+}
+
+static void
+test_case(void **state)
+{
+    struct lysp_node_case *cs = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 2; /* simulate YANG 1.1 */
+
+    /* invalid cardinality */
+#define TEST_DUP(MEMBER, VALUE1, VALUE2) \
+    in.current = "cs {" MEMBER" "VALUE1";"MEMBER" "VALUE2";} ..."; \
+    assert_int_equal(LY_EVALID, parse_case(YCTX, NULL, (struct lysp_node**)&cs)); \
+    CHECK_LOG_CTX("Duplicate keyword \""MEMBER"\".", "Line number 1."); \
+    lysp_node_free(&fctx, (struct lysp_node*)cs); cs = NULL;
+
+    TEST_DUP("description", "text1", "text2");
+    TEST_DUP("reference", "1", "2");
+    TEST_DUP("status", "current", "obsolete");
+    TEST_DUP("when", "true", "false");
+#undef TEST_DUP
+
+    /* full content */
+    in.current = "cs {anydata any;anyxml anyxml; choice ch;container c;description test;if-feature f;leaf l {type string;}"
+            "leaf-list ll {type string;} list li;reference test;status current;uses grp;when true;m:ext;} ...";
+    assert_int_equal(LY_SUCCESS, parse_case(YCTX, NULL, (struct lysp_node **)&cs));
+    CHECK_LYSP_NODE(cs, "test", 1, LYS_STATUS_CURR, 1, "cs", 0, LYS_CASE, 0, "test", 1);
+    lysp_node_free(&fctx, (struct lysp_node *)cs); cs = NULL;
+
+    /* invalid content */
+    in.current = "cs {config true} ...";
+    assert_int_equal(LY_EVALID, parse_case(YCTX, NULL, (struct lysp_node **)&cs));
+    CHECK_LOG_CTX("Invalid keyword \"config\" as a child of \"case\".", "Line number 1.");
+    lysp_node_free(&fctx, (struct lysp_node *)cs); cs = NULL;
+}
+
+static void
+test_any(void **state, enum ly_stmt kw)
+{
+    struct lysp_node_anydata *any = NULL;
+
+    if (kw == LY_STMT_ANYDATA) {
+        PARSER_CUR_PMOD(YCTX)->version = 2; /* simulate YANG 1.1 */
+    } else {
+        PARSER_CUR_PMOD(YCTX)->version = 1; /* simulate YANG 1.0 */
+    }
+
+    /* invalid cardinality */
+#define TEST_DUP(MEMBER, VALUE1, VALUE2) \
+    in.current = "l {" MEMBER" "VALUE1";"MEMBER" "VALUE2";} ..."; \
+    assert_int_equal(LY_EVALID, parse_any(YCTX, kw, NULL, (struct lysp_node**)&any)); \
+    CHECK_LOG_CTX("Duplicate keyword \""MEMBER"\".", "Line number 1."); \
+    lysp_node_free(&fctx, (struct lysp_node*)any); any = NULL;
+
+    TEST_DUP("config", "true", "false");
+    TEST_DUP("description", "text1", "text2");
+    TEST_DUP("mandatory", "true", "false");
+    TEST_DUP("reference", "1", "2");
+    TEST_DUP("status", "current", "obsolete");
+    TEST_DUP("when", "true", "false");
+#undef TEST_DUP
+
+    /* full content */
+    in.current = "any {config true;description test;if-feature f;mandatory true;must 'expr';reference test;status current;when true;m:ext;} ...";
+    assert_int_equal(LY_SUCCESS, parse_any(YCTX, kw, NULL, (struct lysp_node **)&any));
+    // CHECK_LYSP_NODE(NODE, DSC, EXTS, FLAGS, IFFEATURES, NAME, NEXT, TYPE, PARENT, REF, WHEN)
+    uint16_t node_type = kw == LY_STMT_ANYDATA ? LYS_ANYDATA : LYS_ANYXML;
+
+    CHECK_LYSP_NODE(any, "test", 1, LYS_CONFIG_W | LYS_STATUS_CURR | LYS_MAND_TRUE, 1, "any", 0, node_type, 0, "test", 1);
+    assert_non_null(any->musts);
+    lysp_node_free(&fctx, (struct lysp_node *)any); any = NULL;
+}
+
+static void
+test_anydata(void **state)
+{
+    test_any(state, LY_STMT_ANYDATA);
+}
+
+static void
+test_anyxml(void **state)
+{
+    test_any(state, LY_STMT_ANYXML);
+}
+
+static void
+test_grouping(void **state)
+{
+    struct lysp_node_grp *grp = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 2; /* simulate YANG 1.1 */
+    YCTX->main_ctx = (struct lysp_ctx *)YCTX;
+
+    /* invalid cardinality */
+#define TEST_DUP(MEMBER, VALUE1, VALUE2) \
+    in.current = "l {" MEMBER" "VALUE1";"MEMBER" "VALUE2";} ..."; \
+    assert_int_equal(LY_EVALID, parse_grouping(YCTX, NULL, &grp)); \
+    CHECK_LOG_CTX("Duplicate keyword \""MEMBER"\".", "Line number 1."); \
+    lysp_node_free(&fctx, &grp->node); grp = NULL;
+
+    TEST_DUP("description", "text1", "text2");
+    TEST_DUP("reference", "1", "2");
+    TEST_DUP("status", "current", "obsolete");
+#undef TEST_DUP
+
+    /* full content */
+    in.current = "grp {action x;anydata any;anyxml anyxml; choice ch;container c;description test;grouping g;leaf l {type string;}"
+            "leaf-list ll {type string;} list li;notification not;reference test;status current;typedef t {type int8;}uses g;m:ext;} ...";
+    assert_int_equal(LY_SUCCESS, parse_grouping(YCTX, NULL, &grp));
+    assert_non_null(grp);
+    assert_int_equal(LYS_GROUPING, grp->nodetype);
+    assert_string_equal("grp", grp->name);
+    assert_string_equal("test", grp->dsc);
+    assert_non_null(grp->exts);
+    assert_string_equal("test", grp->ref);
+    assert_null(grp->parent);
+    assert_int_equal(LYS_STATUS_CURR, grp->flags);
+    ly_set_erase(&YCTX->tpdfs_nodes, NULL);
+    ly_set_erase(&YCTX->grps_nodes, NULL);
+    lysp_node_free(&fctx, &grp->node);
+    grp = NULL;
+
+    /* invalid content */
+    in.current = "grp {config true} ...";
+    assert_int_equal(LY_EVALID, parse_grouping(YCTX, NULL, &grp));
+    CHECK_LOG_CTX("Invalid keyword \"config\" as a child of \"grouping\".", "Line number 1.");
+    lysp_node_free(&fctx, &grp->node);
+    grp = NULL;
+
+    in.current = "grp {must 'expr'} ...";
+    assert_int_equal(LY_EVALID, parse_grouping(YCTX, NULL, &grp));
+    CHECK_LOG_CTX("Invalid keyword \"must\" as a child of \"grouping\".", "Line number 1.");
+    lysp_node_free(&fctx, &grp->node);
+    grp = NULL;
+}
+
+static void
+test_action(void **state)
+{
+    struct lysp_node_action *rpcs = NULL;
+    struct lysp_node_container *c = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 2; /* simulate YANG 1.1 */
+    YCTX->main_ctx = (struct lysp_ctx *)YCTX;
+
+    /* invalid cardinality */
+#define TEST_DUP(MEMBER, VALUE1, VALUE2) \
+    in.current = "func {" MEMBER" "VALUE1";"MEMBER" "VALUE2";} ..."; \
+    assert_int_equal(LY_EVALID, parse_action(YCTX, NULL, &rpcs)); \
+    CHECK_LOG_CTX("Duplicate keyword \""MEMBER"\".", "Line number 1."); \
+    lysp_node_free(&fctx, (struct lysp_node*)rpcs); rpcs = NULL;
+
+    TEST_DUP("description", "text1", "text2");
+    TEST_DUP("input", "{leaf l1 {type empty;}} description a", "{leaf l2 {type empty;}} description a");
+    TEST_DUP("output", "{leaf l1 {type empty;}} description a", "{leaf l2 {type empty;}} description a");
+    TEST_DUP("reference", "1", "2");
+    TEST_DUP("status", "current", "obsolete");
+#undef TEST_DUP
+
+    /* full content */
+    in.current = "top;";
+    assert_int_equal(LY_SUCCESS, parse_container(YCTX, NULL, (struct lysp_node **)&c));
+    in.current = "func {description test;grouping grp;if-feature f;reference test;status current;typedef mytype {type int8;} m:ext;"
+            "input {anydata a1; anyxml a2; choice ch; container c; grouping grp; leaf l {type int8;} leaf-list ll {type int8;}"
+            " list li; must 1; typedef mytypei {type int8;} uses grp; m:ext;}"
+            "output {anydata a1; anyxml a2; choice ch; container c; grouping grp; leaf l {type int8;} leaf-list ll {type int8;}"
+            " list li; must 1; typedef mytypeo {type int8;} uses grp; m:ext;}} ...";
+    assert_int_equal(LY_SUCCESS, parse_action(YCTX, (struct lysp_node *)c, &rpcs));
+    assert_non_null(rpcs);
+    assert_int_equal(LYS_ACTION, rpcs->nodetype);
+    assert_string_equal("func", rpcs->name);
+    assert_string_equal("test", rpcs->dsc);
+    assert_non_null(rpcs->exts);
+    assert_non_null(rpcs->iffeatures);
+    assert_string_equal("test", rpcs->ref);
+    assert_non_null(rpcs->groupings);
+    assert_non_null(rpcs->typedefs);
+    assert_int_equal(LYS_STATUS_CURR, rpcs->flags);
+    /* input */
+    assert_int_equal(rpcs->input.nodetype, LYS_INPUT);
+    assert_non_null(rpcs->input.groupings);
+    assert_non_null(rpcs->input.exts);
+    assert_non_null(rpcs->input.musts);
+    assert_non_null(rpcs->input.typedefs);
+    assert_non_null(rpcs->input.child);
+    /* output */
+    assert_int_equal(rpcs->output.nodetype, LYS_OUTPUT);
+    assert_non_null(rpcs->output.groupings);
+    assert_non_null(rpcs->output.exts);
+    assert_non_null(rpcs->output.musts);
+    assert_non_null(rpcs->output.typedefs);
+    assert_non_null(rpcs->output.child);
+
+    ly_set_erase(&YCTX->tpdfs_nodes, NULL);
+    ly_set_erase(&YCTX->grps_nodes, NULL);
+    lysp_node_free(&fctx, (struct lysp_node *)rpcs); rpcs = NULL;
+
+    /* invalid content */
+    in.current = "func {config true} ...";
+    assert_int_equal(LY_EVALID, parse_action(YCTX, NULL, &rpcs));
+    CHECK_LOG_CTX("Invalid keyword \"config\" as a child of \"rpc\".", "Line number 1.");
+    lysp_node_free(&fctx, (struct lysp_node *)rpcs); rpcs = NULL;
+
+    lysp_node_free(&fctx, (struct lysp_node *)c);
+}
+
+static void
+test_notification(void **state)
+{
+    struct lysp_node_notif *notifs = NULL;
+    struct lysp_node_container *c = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 2; /* simulate YANG 1.1 */
+    YCTX->main_ctx = (struct lysp_ctx *)YCTX;
+
+    /* invalid cardinality */
+#define TEST_DUP(MEMBER, VALUE1, VALUE2) \
+    in.current = "func {" MEMBER" "VALUE1";"MEMBER" "VALUE2";} ..."; \
+    assert_int_equal(LY_EVALID, parse_notif(YCTX, NULL, &notifs)); \
+    CHECK_LOG_CTX("Duplicate keyword \""MEMBER"\".", "Line number 1."); \
+    lysp_node_free(&fctx, (struct lysp_node*)notifs); notifs = NULL;
+
+    TEST_DUP("description", "text1", "text2");
+    TEST_DUP("reference", "1", "2");
+    TEST_DUP("status", "current", "obsolete");
+#undef TEST_DUP
+
+    /* full content */
+    in.current = "top;";
+    assert_int_equal(LY_SUCCESS, parse_container(YCTX, NULL, (struct lysp_node **)&c));
+    in.current = "ntf {anydata a1; anyxml a2; choice ch; container c; description test; grouping grp; if-feature f; leaf l {type int8;}"
+            "leaf-list ll {type int8;} list li; must 1; reference test; status current; typedef mytype {type int8;} uses grp; m:ext;}";
+    assert_int_equal(LY_SUCCESS, parse_notif(YCTX, (struct lysp_node *)c, &notifs));
+    assert_non_null(notifs);
+    assert_int_equal(LYS_NOTIF, notifs->nodetype);
+    assert_string_equal("ntf", notifs->name);
+    assert_string_equal("test", notifs->dsc);
+    assert_non_null(notifs->exts);
+    assert_non_null(notifs->iffeatures);
+    assert_string_equal("test", notifs->ref);
+    assert_non_null(notifs->groupings);
+    assert_non_null(notifs->typedefs);
+    assert_non_null(notifs->musts);
+    assert_non_null(notifs->child);
+    assert_int_equal(LYS_STATUS_CURR, notifs->flags);
+
+    ly_set_erase(&YCTX->tpdfs_nodes, NULL);
+    ly_set_erase(&YCTX->grps_nodes, NULL);
+    lysp_node_free(&fctx, (struct lysp_node *)notifs); notifs = NULL;
+
+    /* invalid content */
+    in.current = "ntf {config true} ...";
+    assert_int_equal(LY_EVALID, parse_notif(YCTX, NULL, &notifs));
+    CHECK_LOG_CTX("Invalid keyword \"config\" as a child of \"notification\".", "Line number 1.");
+    lysp_node_free(&fctx, (struct lysp_node *)notifs); notifs = NULL;
+
+    lysp_node_free(&fctx, (struct lysp_node *)c);
+}
+
+static void
+test_uses(void **state)
+{
+    struct lysp_node_uses *u = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 2; /* simulate YANG 1.1 */
+
+    /* invalid cardinality */
+#define TEST_DUP(MEMBER, VALUE1, VALUE2) \
+    in.current = "l {" MEMBER" "VALUE1";"MEMBER" "VALUE2";} ..."; \
+    assert_int_equal(LY_EVALID, parse_uses(YCTX, NULL, (struct lysp_node**)&u)); \
+    CHECK_LOG_CTX("Duplicate keyword \""MEMBER"\".", "Line number 1."); \
+    lysp_node_free(&fctx, (struct lysp_node*)u); u = NULL;
+
+    TEST_DUP("description", "text1", "text2");
+    TEST_DUP("reference", "1", "2");
+    TEST_DUP("status", "current", "obsolete");
+    TEST_DUP("when", "true", "false");
+#undef TEST_DUP
+
+    /* full content */
+    in.current = "grpref {augment some/node;description test;if-feature f;reference test;refine some/other/node;status current;when true;m:ext;} ...";
+    assert_int_equal(LY_SUCCESS, parse_uses(YCTX, NULL, (struct lysp_node **)&u));
+    CHECK_LYSP_NODE(u, "test", 1, LYS_STATUS_CURR, 1, "grpref", 0, LYS_USES, 0, "test", 1);
+    assert_non_null(u->augments);
+    assert_non_null(u->refines);
+    lysp_node_free(&fctx, (struct lysp_node *)u); u = NULL;
+}
+
+static void
+test_augment(void **state)
+{
+    struct lysp_node_augment *a = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 2; /* simulate YANG 1.1 */
+
+    /* invalid cardinality */
+#define TEST_DUP(MEMBER, VALUE1, VALUE2) \
+    in.current = "l {" MEMBER" "VALUE1";"MEMBER" "VALUE2";} ..."; \
+    assert_int_equal(LY_EVALID, parse_augment(YCTX, NULL, &a)); \
+    CHECK_LOG_CTX("Duplicate keyword \""MEMBER"\".", "Line number 1."); \
+    lysp_node_free(&fctx, (struct lysp_node *)a); a = NULL;
+
+    TEST_DUP("description", "text1", "text2");
+    TEST_DUP("reference", "1", "2");
+    TEST_DUP("status", "current", "obsolete");
+    TEST_DUP("when", "true", "false");
+#undef TEST_DUP
+
+    /* full content */
+    in.current = "/target/nodeid {action x; anydata any;anyxml anyxml; case cs; choice ch;container c;description test;if-feature f;leaf l {type string;}"
+            "leaf-list ll {type string;} list li;notification not;reference test;status current;uses g;when true;m:ext;} ...";
+    assert_int_equal(LY_SUCCESS, parse_augment(YCTX, NULL, &a));
+    assert_non_null(a);
+    assert_int_equal(LYS_AUGMENT, a->nodetype);
+    assert_string_equal("/target/nodeid", a->nodeid);
+    assert_string_equal("test", a->dsc);
+    assert_non_null(a->exts);
+    assert_non_null(a->iffeatures);
+    assert_string_equal("test", a->ref);
+    assert_non_null(a->when);
+    assert_null(a->parent);
+    assert_int_equal(LYS_STATUS_CURR, a->flags);
+    lysp_node_free(&fctx, (struct lysp_node *)a); a = NULL;
+}
+
+static void
+test_when(void **state)
+{
+    struct lysp_when *w = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = 2; /* simulate YANG 1.1 */
+
+    in.current = "l { description text1;description text2;} ...";
+    assert_int_equal(LY_EVALID, parse_when(YCTX, &w));
+    assert_null(w);
+    CHECK_LOG_CTX("Duplicate keyword \"description\".", "Line number 1.");
+
+    in.current = "l { reference 1;reference 2;} ...";
+    assert_int_equal(LY_EVALID, parse_when(YCTX, &w));
+    assert_null(w);
+    CHECK_LOG_CTX("Duplicate keyword \"reference\".", "Line number 1.");
+}
+
+static void
+test_value(void **state)
+{
+    struct lysp_type_enum enm;
+
+    in.current = "-0;";
+    memset(&enm, 0, sizeof enm);
+    assert_int_equal(parse_type_enum_value_pos(YCTX, LY_STMT_VALUE, &enm), LY_SUCCESS);
+
+    in.current = "-0;";
+    memset(&enm, 0, sizeof enm);
+    assert_int_equal(parse_type_enum_value_pos(YCTX, LY_STMT_POSITION, &enm), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"-0\" of \"position\".", "Line number 1.");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_helpers, setup, teardown),
+        UTEST(test_comments, setup, teardown),
+        UTEST(test_arg, setup, teardown),
+        UTEST(test_stmts, setup, teardown),
+        UTEST(test_minmax, setup, teardown),
+        UTEST(test_valid_module, setup, teardown),
+        UTEST(test_module, setup, teardown),
+        UTEST(test_deviation, setup, teardown),
+        UTEST(test_deviate, setup, teardown),
+        UTEST(test_container, setup, teardown),
+        UTEST(test_leaf, setup, teardown),
+        UTEST(test_leaflist, setup, teardown),
+        UTEST(test_list, setup, teardown),
+        UTEST(test_choice, setup, teardown),
+        UTEST(test_case, setup, teardown),
+        UTEST(test_anydata, setup, teardown),
+        UTEST(test_anyxml, setup, teardown),
+        UTEST(test_action, setup, teardown),
+        UTEST(test_notification, setup, teardown),
+        UTEST(test_grouping, setup, teardown),
+        UTEST(test_uses, setup, teardown),
+        UTEST(test_augment, setup, teardown),
+        UTEST(test_when, setup, teardown),
+        UTEST(test_value, setup, teardown),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/schema/test_yin.c b/tests/utests/schema/test_yin.c
new file mode 100644
index 0000000..0ce3abc
--- /dev/null
+++ b/tests/utests/schema/test_yin.c
@@ -0,0 +1,3584 @@
+/**
+ * @file test_yin.c
+ * @author David Sedlák <xsedla1d@stud.fit.vutbr.cz>
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief unit tests for YIN parser and printer
+ *
+ * Copyright (c) 2015 - 2022 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+#define _UTEST_MAIN_
+#include "utests.h"
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "common.h"
+#include "in.h"
+#include "parser_internal.h"
+#include "schema_compile.h"
+#include "tree.h"
+#include "tree_edit.h"
+#include "tree_schema.h"
+#include "tree_schema_internal.h"
+#include "xml.h"
+#include "xpath.h"
+
+/* copied from parser_yin.c */
+enum yin_argument {
+    YIN_ARG_UNKNOWN = 0,   /**< parsed argument can not be matched with any supported yin argument keyword */
+    YIN_ARG_NAME,          /**< argument name */
+    YIN_ARG_TARGET_NODE,   /**< argument target-node */
+    YIN_ARG_MODULE,        /**< argument module */
+    YIN_ARG_VALUE,         /**< argument value */
+    YIN_ARG_TEXT,          /**< argument text */
+    YIN_ARG_CONDITION,     /**< argument condition */
+    YIN_ARG_URI,           /**< argument uri */
+    YIN_ARG_DATE,          /**< argument data */
+    YIN_ARG_TAG,           /**< argument tag */
+    YIN_ARG_NONE           /**< empty (special value) */
+};
+
+struct yin_subelement {
+    enum ly_stmt type;      /**< type of keyword */
+    void *dest;             /**< meta infromation passed to responsible function (mostly information about where parsed subelement should be stored) */
+    uint16_t flags;         /**< describes constraints of subelement can be set to YIN_SUBELEM_MANDATORY, YIN_SUBELEM_UNIQUE, YIN_SUBELEM_FIRST, YIN_SUBELEM_VER2, and YIN_SUBELEM_DEFAULT_TEXT */
+};
+
+struct import_meta {
+    const char *prefix;             /**< module prefix. */
+    struct lysp_import **imports;   /**< imports to add to. */
+};
+
+struct yin_argument_meta {
+    uint16_t *flags;        /**< Argument flags */
+    const char **argument;  /**< Argument value */
+};
+
+struct tree_node_meta {
+    struct lysp_node *parent;       /**< parent node */
+    struct lysp_node **nodes;    /**< linked list of siblings */
+};
+
+struct include_meta {
+    const char *name;               /**< Module/submodule name. */
+    struct lysp_include **includes; /**< [Sized array](@ref sizedarrays) of parsed includes to add to. */
+};
+
+struct inout_meta {
+    struct lysp_node *parent;          /**< Parent node. */
+    struct lysp_node_action_inout *inout_p; /**< inout_p Input/output pointer to write to. */
+};
+
+struct minmax_dev_meta {
+    uint32_t *lim;                      /**< min/max value to write to. */
+    uint16_t *flags;                    /**< min/max flags to write to. */
+    struct lysp_ext_instance **exts;    /**< extension instances to add to. */
+};
+
+#define YIN_SUBELEM_MANDATORY   0x01
+#define YIN_SUBELEM_UNIQUE      0x02
+#define YIN_SUBELEM_FIRST       0x04
+#define YIN_SUBELEM_VER2        0x08
+
+#define YIN_SUBELEM_PARSED      0x80
+
+/* prototypes of static functions */
+enum yin_argument yin_match_argument_name(const char *name, size_t len);
+
+LY_ERR yin_parse_content(struct lysp_yin_ctx *ctx, struct yin_subelement *subelem_info, size_t subelem_info_size,
+        const void *parent, enum ly_stmt parent_stmt, const char **text_content, struct lysp_ext_instance **exts);
+LY_ERR yin_validate_value(struct lysp_yin_ctx *ctx, enum yang_arg val_type);
+enum ly_stmt yin_match_keyword(struct lysp_yin_ctx *ctx, const char *name, size_t name_len,
+        const char *prefix, size_t prefix_len, enum ly_stmt parrent);
+
+LY_ERR yin_parse_extension_instance(struct lysp_yin_ctx *ctx, const void *parent, enum ly_stmt parent_stmt,
+        LY_ARRAY_COUNT_TYPE parent_stmt_index, struct lysp_ext_instance **exts);
+LY_ERR yin_parse_element_generic(struct lysp_yin_ctx *ctx, enum ly_stmt parent, struct lysp_stmt **element);
+LY_ERR yin_parse_mod(struct lysp_yin_ctx *ctx, struct lysp_module *mod);
+LY_ERR yin_parse_submod(struct lysp_yin_ctx *ctx, struct lysp_submodule *submod);
+
+/* wrapping element used for mocking has nothing to do with real module structure */
+#define ELEMENT_WRAPPER_START "<status xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">"
+#define ELEMENT_WRAPPER_END "</status>"
+
+#define TEST_1_CHECK_LYSP_EXT_INSTANCE(NODE, INSUBSTMT)\
+    CHECK_LYSP_EXT_INSTANCE((NODE), NULL, 1, INSUBSTMT, 0, "myext:c-define", LY_VALUE_XML)
+
+struct lysp_yin_ctx *YCTX;
+struct lysf_ctx fctx;
+
+static int
+setup_ctx(void **state)
+{
+    struct lysp_module *pmod;
+
+    /* allocate parser context */
+    YCTX = calloc(1, sizeof(*YCTX));
+    YCTX->main_ctx = (struct lysp_ctx *)YCTX;
+    YCTX->format = LYS_IN_YIN;
+    ly_set_new(&YCTX->parsed_mods);
+
+    /* allocate new parsed module */
+    pmod = calloc(1, sizeof *pmod);
+    ly_set_add(YCTX->parsed_mods, pmod, 1, NULL);
+
+    /* allocate new module */
+    pmod->mod = calloc(1, sizeof *pmod->mod);
+    pmod->mod->ctx = UTEST_LYCTX;
+    pmod->mod->parsed = pmod;
+
+    return 0;
+}
+
+static int
+setup(void **state)
+{
+    UTEST_SETUP;
+
+    setup_ctx(state);
+
+    fctx.ctx = UTEST_LYCTX;
+    fctx.mod = PARSER_CUR_PMOD(YCTX)->mod;
+
+    return 0;
+}
+
+static int
+teardown_ctx(void **UNUSED(state))
+{
+    lys_module_free(&fctx, PARSER_CUR_PMOD(YCTX)->mod, 0);
+    lysp_yin_ctx_free(YCTX);
+    YCTX = NULL;
+
+    return 0;
+}
+
+static int
+teardown(void **state)
+{
+    teardown_ctx(state);
+
+    lysf_ctx_erase(&fctx);
+
+    UTEST_TEARDOWN;
+
+    return 0;
+}
+
+#define RESET_STATE \
+    ly_in_free(UTEST_IN, 0); \
+    UTEST_IN = NULL; \
+    teardown_ctx(state); \
+    setup_ctx(state)
+
+static void
+test_yin_match_keyword(void **state)
+{
+    const char *prefix;
+    size_t prefix_len;
+
+    /* create mock yin namespace in xml context */
+    ly_in_new_memory("<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" />", &UTEST_IN);
+    lyxml_ctx_new(UTEST_LYCTX, UTEST_IN, &YCTX->xmlctx);
+    prefix = YCTX->xmlctx->prefix;
+    prefix_len = YCTX->xmlctx->prefix_len;
+
+    assert_int_equal(yin_match_keyword(YCTX, "anydatax", strlen("anydatax"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_NONE);
+    assert_int_equal(yin_match_keyword(YCTX, "asdasd", strlen("asdasd"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_NONE);
+    assert_int_equal(yin_match_keyword(YCTX, "", 0, prefix, prefix_len, LY_STMT_NONE), LY_STMT_NONE);
+    assert_int_equal(yin_match_keyword(YCTX, "anydata", strlen("anydata"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_ANYDATA);
+    assert_int_equal(yin_match_keyword(YCTX, "anyxml", strlen("anyxml"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_ANYXML);
+    assert_int_equal(yin_match_keyword(YCTX, "argument", strlen("argument"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_ARGUMENT);
+    assert_int_equal(yin_match_keyword(YCTX, "augment", strlen("augment"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_AUGMENT);
+    assert_int_equal(yin_match_keyword(YCTX, "base", strlen("base"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_BASE);
+    assert_int_equal(yin_match_keyword(YCTX, "belongs-to", strlen("belongs-to"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_BELONGS_TO);
+    assert_int_equal(yin_match_keyword(YCTX, "bit", strlen("bit"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_BIT);
+    assert_int_equal(yin_match_keyword(YCTX, "case", strlen("case"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_CASE);
+    assert_int_equal(yin_match_keyword(YCTX, "choice", strlen("choice"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_CHOICE);
+    assert_int_equal(yin_match_keyword(YCTX, "config", strlen("config"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_CONFIG);
+    assert_int_equal(yin_match_keyword(YCTX, "contact", strlen("contact"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_CONTACT);
+    assert_int_equal(yin_match_keyword(YCTX, "container", strlen("container"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_CONTAINER);
+    assert_int_equal(yin_match_keyword(YCTX, "default", strlen("default"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_DEFAULT);
+    assert_int_equal(yin_match_keyword(YCTX, "description", strlen("description"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_DESCRIPTION);
+    assert_int_equal(yin_match_keyword(YCTX, "deviate", strlen("deviate"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_DEVIATE);
+    assert_int_equal(yin_match_keyword(YCTX, "deviation", strlen("deviation"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_DEVIATION);
+    assert_int_equal(yin_match_keyword(YCTX, "enum", strlen("enum"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_ENUM);
+    assert_int_equal(yin_match_keyword(YCTX, "error-app-tag", strlen("error-app-tag"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_ERROR_APP_TAG);
+    assert_int_equal(yin_match_keyword(YCTX, "error-message", strlen("error-message"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_ERROR_MESSAGE);
+    assert_int_equal(yin_match_keyword(YCTX, "extension", strlen("extension"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_EXTENSION);
+    assert_int_equal(yin_match_keyword(YCTX, "feature", strlen("feature"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_FEATURE);
+    assert_int_equal(yin_match_keyword(YCTX, "fraction-digits", strlen("fraction-digits"), prefix,  prefix_len, LY_STMT_NONE), LY_STMT_FRACTION_DIGITS);
+    assert_int_equal(yin_match_keyword(YCTX, "grouping", strlen("grouping"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_GROUPING);
+    assert_int_equal(yin_match_keyword(YCTX, "identity", strlen("identity"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_IDENTITY);
+    assert_int_equal(yin_match_keyword(YCTX, "if-feature", strlen("if-feature"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_IF_FEATURE);
+    assert_int_equal(yin_match_keyword(YCTX, "import", strlen("import"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_IMPORT);
+    assert_int_equal(yin_match_keyword(YCTX, "include", strlen("include"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_INCLUDE);
+    assert_int_equal(yin_match_keyword(YCTX, "input", strlen("input"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_INPUT);
+    assert_int_equal(yin_match_keyword(YCTX, "key", strlen("key"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_KEY);
+    assert_int_equal(yin_match_keyword(YCTX, "leaf", strlen("leaf"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_LEAF);
+    assert_int_equal(yin_match_keyword(YCTX, "leaf-list", strlen("leaf-list"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_LEAF_LIST);
+    assert_int_equal(yin_match_keyword(YCTX, "length", strlen("length"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_LENGTH);
+    assert_int_equal(yin_match_keyword(YCTX, "list", strlen("list"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_LIST);
+    assert_int_equal(yin_match_keyword(YCTX, "mandatory", strlen("mandatory"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_MANDATORY);
+    assert_int_equal(yin_match_keyword(YCTX, "max-elements", strlen("max-elements"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_MAX_ELEMENTS);
+    assert_int_equal(yin_match_keyword(YCTX, "min-elements", strlen("min-elements"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_MIN_ELEMENTS);
+    assert_int_equal(yin_match_keyword(YCTX, "modifier", strlen("modifier"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_MODIFIER);
+    assert_int_equal(yin_match_keyword(YCTX, "module", strlen("module"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_MODULE);
+    assert_int_equal(yin_match_keyword(YCTX, "must", strlen("must"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_MUST);
+    assert_int_equal(yin_match_keyword(YCTX, "namespace", strlen("namespace"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_NAMESPACE);
+    assert_int_equal(yin_match_keyword(YCTX, "notification", strlen("notification"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_NOTIFICATION);
+    assert_int_equal(yin_match_keyword(YCTX, "ordered-by", strlen("ordered-by"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_ORDERED_BY);
+    assert_int_equal(yin_match_keyword(YCTX, "organization", strlen("organization"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_ORGANIZATION);
+    assert_int_equal(yin_match_keyword(YCTX, "output", strlen("output"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_OUTPUT);
+    assert_int_equal(yin_match_keyword(YCTX, "path", strlen("path"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_PATH);
+    assert_int_equal(yin_match_keyword(YCTX, "pattern", strlen("pattern"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_PATTERN);
+    assert_int_equal(yin_match_keyword(YCTX, "position", strlen("position"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_POSITION);
+    assert_int_equal(yin_match_keyword(YCTX, "prefix", strlen("prefix"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_PREFIX);
+    assert_int_equal(yin_match_keyword(YCTX, "presence", strlen("presence"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_PRESENCE);
+    assert_int_equal(yin_match_keyword(YCTX, "range", strlen("range"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_RANGE);
+    assert_int_equal(yin_match_keyword(YCTX, "reference", strlen("reference"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_REFERENCE);
+    assert_int_equal(yin_match_keyword(YCTX, "refine", strlen("refine"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_REFINE);
+    assert_int_equal(yin_match_keyword(YCTX, "require-instance", strlen("require-instance"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_REQUIRE_INSTANCE);
+    assert_int_equal(yin_match_keyword(YCTX, "revision", strlen("revision"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_REVISION);
+    assert_int_equal(yin_match_keyword(YCTX, "revision-date", strlen("revision-date"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_REVISION_DATE);
+    assert_int_equal(yin_match_keyword(YCTX, "rpc", strlen("rpc"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_RPC);
+    assert_int_equal(yin_match_keyword(YCTX, "status", strlen("status"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_STATUS);
+    assert_int_equal(yin_match_keyword(YCTX, "submodule", strlen("submodule"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_SUBMODULE);
+    assert_int_equal(yin_match_keyword(YCTX, "type", strlen("type"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_TYPE);
+    assert_int_equal(yin_match_keyword(YCTX, "typedef", strlen("typedef"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_TYPEDEF);
+    assert_int_equal(yin_match_keyword(YCTX, "unique", strlen("unique"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_UNIQUE);
+    assert_int_equal(yin_match_keyword(YCTX, "units", strlen("units"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_UNITS);
+    assert_int_equal(yin_match_keyword(YCTX, "uses", strlen("uses"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_USES);
+    assert_int_equal(yin_match_keyword(YCTX, "value", strlen("value"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_VALUE);
+    assert_int_equal(yin_match_keyword(YCTX, "when", strlen("when"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_WHEN);
+    assert_int_equal(yin_match_keyword(YCTX, "yang-version", strlen("yang-version"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_YANG_VERSION);
+    assert_int_equal(yin_match_keyword(YCTX, "yin-element", strlen("yin-element"), prefix, prefix_len, LY_STMT_NONE), LY_STMT_YIN_ELEMENT);
+}
+
+static void
+test_yin_match_argument_name(void **UNUSED(state))
+{
+    assert_int_equal(yin_match_argument_name("", 5), YIN_ARG_UNKNOWN);
+    assert_int_equal(yin_match_argument_name("qwertyasd", 5), YIN_ARG_UNKNOWN);
+    assert_int_equal(yin_match_argument_name("conditionasd", 8), YIN_ARG_UNKNOWN);
+    assert_int_equal(yin_match_argument_name("condition", 9), YIN_ARG_CONDITION);
+    assert_int_equal(yin_match_argument_name("date", 4), YIN_ARG_DATE);
+    assert_int_equal(yin_match_argument_name("module", 6), YIN_ARG_MODULE);
+    assert_int_equal(yin_match_argument_name("name", 4), YIN_ARG_NAME);
+    assert_int_equal(yin_match_argument_name("tag", 3), YIN_ARG_TAG);
+    assert_int_equal(yin_match_argument_name("target-node", 11), YIN_ARG_TARGET_NODE);
+    assert_int_equal(yin_match_argument_name("text", 4), YIN_ARG_TEXT);
+    assert_int_equal(yin_match_argument_name("uri", 3), YIN_ARG_URI);
+    assert_int_equal(yin_match_argument_name("value", 5), YIN_ARG_VALUE);
+}
+
+static void
+test_yin_parse_content(void **state)
+{
+    LY_ERR ret = LY_SUCCESS;
+    const char *data =
+            "<prefix value=\"a_mod\" xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">\n"
+            "    <myext:custom xmlns:myext=\"urn:example:extensions\">totally amazing extension</myext:custom>\n"
+            "    <extension name=\"ext\">\n"
+            "        <argument name=\"argname\"></argument>\n"
+            "        <description><text>desc</text></description>\n"
+            "        <reference><text>ref</text></reference>\n"
+            "        <status value=\"deprecated\"></status>\n"
+            "    </extension>\n"
+            "    <text xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">wsefsdf</text>\n"
+            "    <if-feature name=\"foo\"></if-feature>\n"
+            "    <when condition=\"condition...\">\n"
+            "        <reference><text>when_ref</text></reference>\n"
+            "        <description><text>when_desc</text></description>\n"
+            "    </when>\n"
+            "    <config value=\"true\"/>\n"
+            "    <error-message>\n"
+            "        <value>error-msg</value>\n"
+            "    </error-message>\n"
+            "    <error-app-tag value=\"err-app-tag\"/>\n"
+            "    <units name=\"radians\"></units>\n"
+            "    <default value=\"default-value\"/>\n"
+            "    <position value=\"25\"></position>\n"
+            "    <value value=\"-5\"/>\n"
+            "    <require-instance value=\"true\"></require-instance>\n"
+            "    <range value=\"5..10\" />\n"
+            "    <length value=\"baf\"/>\n"
+            "    <pattern value='pattern'>\n"
+            "        <modifier value='invert-match'/>\n"
+            "    </pattern>\n"
+            "    <enum name=\"yay\">\n"
+            "    </enum>\n"
+            "</prefix>";
+    struct lysp_ext_instance *exts = NULL;
+    const char *value;
+
+    /* test unique subelem */
+    const char *prefix_value;
+    struct yin_subelement subelems2[2] = {{LY_STMT_PREFIX, &prefix_value, YIN_SUBELEM_UNIQUE},
+        {LY_STMT_ARG_TEXT, &value, YIN_SUBELEM_UNIQUE}};
+
+    data = ELEMENT_WRAPPER_START
+            "<prefix value=\"inv_mod\" />"
+            "<text xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">wsefsdf</text>"
+            "<text xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">wsefsdf</text>"
+            ELEMENT_WRAPPER_END;
+    ly_in_new_memory(data, &UTEST_IN);
+    lyxml_ctx_new(UTEST_LYCTX, UTEST_IN, &YCTX->xmlctx);
+    lyxml_ctx_next(YCTX->xmlctx);
+
+    ret = yin_parse_content(YCTX, subelems2, 2, NULL, LY_STMT_STATUS, NULL, &exts);
+    assert_int_equal(ret, LY_EVALID);
+    CHECK_LOG_CTX("Redefinition of \"text\" sub-element in \"status\" element.", "Line number 1.");
+    lydict_remove(UTEST_LYCTX, prefix_value);
+    lydict_remove(UTEST_LYCTX, value);
+    RESET_STATE;
+
+    /* test first subelem */
+    data = ELEMENT_WRAPPER_START
+            "<prefix value=\"inv_mod\" />"
+            "<text xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">wsefsdf</text>"
+            "<text xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">wsefsdf</text>"
+            ELEMENT_WRAPPER_END;
+    struct yin_subelement subelems3[2] = {{LY_STMT_PREFIX, &prefix_value, YIN_SUBELEM_UNIQUE},
+        {LY_STMT_ARG_TEXT, &value, YIN_SUBELEM_FIRST}};
+
+    ly_in_new_memory(data, &UTEST_IN);
+    lyxml_ctx_new(UTEST_LYCTX, UTEST_IN, &YCTX->xmlctx);
+    lyxml_ctx_next(YCTX->xmlctx);
+
+    ret = yin_parse_content(YCTX, subelems3, 2, NULL, LY_STMT_STATUS, NULL, &exts);
+    assert_int_equal(ret, LY_EVALID);
+    CHECK_LOG_CTX("Sub-element \"text\" of \"status\" element must be defined as it's first sub-element.", "Line number 1.");
+    lydict_remove(UTEST_LYCTX, prefix_value);
+    RESET_STATE;
+
+    /* test mandatory subelem */
+    data = ELEMENT_WRAPPER_START ELEMENT_WRAPPER_END;
+    struct yin_subelement subelems4[1] = {{LY_STMT_PREFIX, &prefix_value, YIN_SUBELEM_MANDATORY | YIN_SUBELEM_UNIQUE}};
+
+    ly_in_new_memory(data, &UTEST_IN);
+    lyxml_ctx_new(UTEST_LYCTX, UTEST_IN, &YCTX->xmlctx);
+    lyxml_ctx_next(YCTX->xmlctx);
+
+    ret = yin_parse_content(YCTX, subelems4, 1, NULL, LY_STMT_STATUS, NULL, &exts);
+    assert_int_equal(ret, LY_EVALID);
+    CHECK_LOG_CTX("Missing mandatory sub-element \"prefix\" of \"status\" element.", "Line number 1.");
+}
+
+static void
+test_validate_value(void **state)
+{
+    const char *data = ELEMENT_WRAPPER_START ELEMENT_WRAPPER_END;
+
+    /* create some XML context */
+    ly_in_new_memory(data, &UTEST_IN);
+    lyxml_ctx_new(UTEST_LYCTX, UTEST_IN, &YCTX->xmlctx);
+    YCTX->xmlctx->status = LYXML_ELEM_CONTENT;
+    YCTX->xmlctx->dynamic = 0;
+
+    YCTX->xmlctx->value = "#invalid";
+    YCTX->xmlctx->value_len = 8;
+    assert_int_equal(yin_validate_value(YCTX, Y_IDENTIF_ARG), LY_EVALID);
+    CHECK_LOG_CTX("Invalid identifier first character '#' (0x0023).", "Line number 1.");
+
+    YCTX->xmlctx->value = "";
+    YCTX->xmlctx->value_len = 0;
+    assert_int_equal(yin_validate_value(YCTX, Y_STR_ARG), LY_SUCCESS);
+
+    YCTX->xmlctx->value = "pre:b";
+    YCTX->xmlctx->value_len = 5;
+    assert_int_equal(yin_validate_value(YCTX, Y_IDENTIF_ARG), LY_EVALID);
+    assert_int_equal(yin_validate_value(YCTX, Y_PREF_IDENTIF_ARG), LY_SUCCESS);
+
+    YCTX->xmlctx->value = "pre:pre:b";
+    YCTX->xmlctx->value_len = 9;
+    assert_int_equal(yin_validate_value(YCTX, Y_PREF_IDENTIF_ARG), LY_EVALID);
+}
+
+static void
+test_valid_module(void **state)
+{
+    struct lys_module *mod;
+    char *printed;
+    const char *links_yin =
+            "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"links\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:mod2=\"urn:module2\">\n"
+            "  <yang-version value=\"1.1\"/>\n"
+            "  <namespace uri=\"urn:module2\"/>\n"
+            "  <prefix value=\"mod2\"/>\n"
+            "  <identity name=\"just-another-identity\"/>\n"
+            "  <grouping name=\"rgroup\">\n"
+            "    <leaf name=\"rg1\">\n"
+            "      <type name=\"string\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"rg2\">\n"
+            "      <type name=\"string\"/>\n"
+            "    </leaf>\n"
+            "  </grouping>\n"
+            "  <leaf name=\"one-leaf\">\n"
+            "    <type name=\"string\"/>\n"
+            "  </leaf>\n"
+            "  <list name=\"list-for-augment\">\n"
+            "    <key value=\"keyleaf\"/>\n"
+            "    <leaf name=\"keyleaf\">\n"
+            "      <type name=\"string\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"just-leaf\">\n"
+            "      <type name=\"int32\"/>\n"
+            "    </leaf>\n"
+            "  </list>\n"
+            "  <leaf name=\"rleaf\">\n"
+            "    <type name=\"string\"/>\n"
+            "  </leaf>\n"
+            "  <leaf-list name=\"llist\">\n"
+            "    <type name=\"string\"/>\n"
+            "    <min-elements value=\"0\"/>\n"
+            "    <max-elements value=\"100\"/>\n"
+            "    <ordered-by value=\"user\"/>\n"
+            "  </leaf-list>\n"
+            "</module>\n";
+    const char *statements_yin =
+            "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"statements\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:mod=\"urn:module\"\n"
+            "        xmlns:mod2=\"urn:module2\">\n"
+            "  <yang-version value=\"1.1\"/>\n"
+            "  <namespace uri=\"urn:module\"/>\n"
+            "  <prefix value=\"mod\"/>\n"
+            "  <import module=\"links\">\n"
+            "    <prefix value=\"mod2\"/>\n"
+            "  </import>\n"
+            "  <extension name=\"ext\"/>\n"
+            "  <identity name=\"random-identity\">\n"
+            "    <base name=\"mod2:just-another-identity\"/>\n"
+            "    <base name=\"another-identity\"/>\n"
+            "  </identity>\n"
+            "  <identity name=\"another-identity\">\n"
+            "    <base name=\"mod2:just-another-identity\"/>\n"
+            "  </identity>\n"
+            "  <typedef name=\"percent\">\n"
+            "    <type name=\"uint8\">\n"
+            "      <range value=\"0 .. 100\"/>\n"
+            "    </type>\n"
+            "    <units name=\"percent\"/>\n"
+            "  </typedef>\n"
+            "  <list name=\"list1\">\n"
+            "    <key value=\"a\"/>\n"
+            "    <leaf name=\"a\">\n"
+            "      <type name=\"string\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"x\">\n"
+            "      <type name=\"string\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"y\">\n"
+            "      <type name=\"string\"/>\n"
+            "    </leaf>\n"
+            "  </list>\n"
+            "  <container name=\"ice-cream-shop\">\n"
+            "    <container name=\"employees\">\n"
+            "      <when condition=\"/list1/x\"/>\n"
+            "      <list name=\"employee\">\n"
+            "        <key value=\"id\"/>\n"
+            "        <unique tag=\"name\"/>\n"
+            "        <config value=\"true\"/>\n"
+            "        <min-elements value=\"0\">\n"
+            "          <mod:ext/>\n"
+            "        </min-elements>\n"
+            "        <max-elements value=\"unbounded\"/>\n"
+            "        <leaf name=\"id\">\n"
+            "          <type name=\"uint64\"/>\n"
+            "          <mandatory value=\"true\"/>\n"
+            "        </leaf>\n"
+            "        <leaf name=\"name\">\n"
+            "          <type name=\"string\"/>\n"
+            "        </leaf>\n"
+            "        <leaf name=\"age\">\n"
+            "          <type name=\"uint32\"/>\n"
+            "        </leaf>\n"
+            "      </list>\n"
+            "    </container>\n"
+            "  </container>\n"
+            "  <container name=\"random\">\n"
+            "    <grouping name=\"group\">\n"
+            "      <leaf name=\"g1\">\n"
+            "        <type name=\"percent\"/>\n"
+            "        <mandatory value=\"false\"/>\n"
+            "      </leaf>\n"
+            "      <leaf name=\"g2\">\n"
+            "        <type name=\"string\"/>\n"
+            "      </leaf>\n"
+            "    </grouping>\n"
+            "    <choice name=\"switch\">\n"
+            "      <case name=\"a\">\n"
+            "        <leaf name=\"aleaf\">\n"
+            "          <type name=\"string\"/>\n"
+            "          <default value=\"aaa\"/>\n"
+            "        </leaf>\n"
+            "      </case>\n"
+            "      <case name=\"c\">\n"
+            "        <leaf name=\"cleaf\">\n"
+            "          <type name=\"string\"/>\n"
+            "        </leaf>\n"
+            "      </case>\n"
+            "    </choice>\n"
+            "    <anyxml name=\"xml-data\"/>\n"
+            "    <anydata name=\"any-data\"/>\n"
+            "    <leaf-list name=\"leaflist\">\n"
+            "      <type name=\"string\"/>\n"
+            "      <min-elements value=\"0\"/>\n"
+            "      <max-elements value=\"20\"/>\n"
+            "    </leaf-list>\n"
+            "    <uses name=\"group\"/>\n"
+            "    <uses name=\"mod2:rgroup\"/>\n"
+            "    <leaf name=\"lref\">\n"
+            "      <type name=\"leafref\">\n"
+            "        <path value=\"/mod2:one-leaf\"/>\n"
+            "      </type>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"iref\">\n"
+            "      <type name=\"identityref\">\n"
+            "        <base name=\"mod2:just-another-identity\"/>\n"
+            "      </type>\n"
+            "    </leaf>\n"
+            "  </container>\n"
+            "  <augment target-node=\"/random\">\n"
+            "    <leaf name=\"aug-leaf\">\n"
+            "      <type name=\"string\"/>\n"
+            "    </leaf>\n"
+            "  </augment>\n"
+            "  <notification name=\"notif\"/>\n"
+            "  <deviation target-node=\"/mod:ice-cream-shop/mod:employees/mod:employee/mod:age\">\n"
+            "    <deviate value=\"not-supported\">\n"
+            "      <mod:ext/>\n"
+            "    </deviate>\n"
+            "  </deviation>\n"
+            "  <deviation target-node=\"/mod:list1\">\n"
+            "    <deviate value=\"add\">\n"
+            "      <mod:ext/>\n"
+            "      <must condition=\"1\"/>\n"
+            "      <must condition=\"2\"/>\n"
+            "      <unique tag=\"x\"/>\n"
+            "      <unique tag=\"y\"/>\n"
+            "      <config value=\"true\"/>\n"
+            "      <min-elements value=\"1\"/>\n"
+            "      <max-elements value=\"2\"/>\n"
+            "    </deviate>\n"
+            "  </deviation>\n"
+            "  <deviation target-node=\"/mod:ice-cream-shop/mod:employees/mod:employee\">\n"
+            "    <deviate value=\"delete\">\n"
+            "      <unique tag=\"name\"/>\n"
+            "    </deviate>\n"
+            "  </deviation>\n"
+            "  <deviation target-node=\"/mod:random/mod:leaflist\">\n"
+            "    <deviate value=\"replace\">\n"
+            "      <type name=\"uint32\"/>\n"
+            "      <min-elements value=\"10\"/>\n"
+            "      <max-elements value=\"15\"/>\n"
+            "    </deviate>\n"
+            "  </deviation>\n"
+            "</module>\n";
+
+    UTEST_ADD_MODULE(links_yin, LYS_IN_YIN, NULL, NULL);
+    UTEST_ADD_MODULE(statements_yin, LYS_IN_YIN, NULL, &mod);
+    lys_print_mem(&printed, mod, LYS_OUT_YIN, 0);
+    assert_string_equal(printed, statements_yin);
+    free(printed);
+}
+
+static void
+test_print_module(void **state)
+{
+    struct lys_module *mod;
+
+    char *orig = malloc(8096);
+
+    strcpy(orig,
+            "module all {\n"
+            "    yang-version 1.1;\n"
+            "    namespace \"urn:all\";\n"
+            "    prefix all_mod;\n\n"
+            "    import ietf-yang-types {\n"
+            "        prefix yt;\n"
+            "        revision-date 2013-07-15;\n"
+            "        description\n"
+            "            \"YANG types\";\n"
+            "        reference\n"
+            "            \"RFC reference\";\n"
+            "    }\n\n"
+            "    feature feat1 {\n"
+            "        if-feature \"feat2\";\n"
+            "        status obsolete;\n"
+            "    }\n\n"
+            "    feature feat2;\n"
+            "    feature feat3;\n\n"
+            "    identity ident2 {\n"
+            "        base ident1;\n"
+            "    }\n\n"
+            "    identity ident1;\n\n"
+            "    typedef tdef1 {\n"
+            "        type tdef2 {\n"
+            "            length \"3..9 | 30..40\";\n"
+            "            pattern \"[ac]*\";\n"
+            "        }\n"
+            "        units \"none\";\n"
+            "        default \"aaa\";\n"
+            "    }\n\n"
+            "    typedef tdef2 {\n"
+            "        type string {\n"
+            "            length \"2..10 | 20..50\";\n"
+            "            pattern \"[ab]*\";\n"
+            "        }\n"
+            "    }\n\n"
+            "    grouping group1 {\n"
+            "        leaf leaf1 {\n"
+            "            type int8;\n"
+            "        }\n"
+            "    }\n\n"
+            "    container cont1 {\n"
+            "        leaf leaf2 {\n"
+            "            if-feature \"feat1\";\n"
+            "            type int16;\n"
+            "            status obsolete;\n"
+            "        }\n\n"
+            "        uses group1 {\n"
+            "            if-feature \"feat2\";\n"
+            "            refine \"leaf1\" {\n"
+            "                if-feature \"feat3\";\n"
+            "                must \"24 - 4 = number('20')\";\n"
+            "                default \"25\";\n"
+            "                config true;\n"
+            "                mandatory false;\n"
+            "                description\n"
+            "                    \"dsc\";\n"
+            "                reference\n"
+            "                    \"none\";\n"
+            "            }\n"
+            "        }\n\n"
+            "        leaf leaf3 {\n"
+            "            type int32;\n"
+            "        }\n\n"
+            "        leaf leaf4 {\n"
+            "            type int64 {\n"
+            "                range \"1000 .. 50000\" {\n"
+            "                    error-message\n"
+            "                        \"Special error message.\";\n"
+            "                    error-app-tag \"special-tag\";\n"
+            "                }\n"
+            "            }\n"
+            "        }\n\n"
+            "        leaf leaf5 {\n"
+            "            type uint8;\n"
+            "        }\n\n"
+            "        leaf leaf6 {\n"
+            "            type uint16;\n"
+            "        }\n\n"
+            "        leaf leaf7 {\n"
+            "            type uint32;\n"
+            "        }\n\n"
+            "        leaf leaf8 {\n"
+            "            type uint64;\n"
+            "        }\n\n"
+            "        choice choic1 {\n"
+            "            default \"leaf9b\";\n"
+            "            leaf leaf9a {\n"
+            "                type decimal64 {\n"
+            "                    fraction-digits 9;\n"
+            "                }\n"
+            "            }\n\n"
+            "            leaf leaf9b {\n"
+            "                type boolean;\n"
+            "                default \"false\";\n"
+            "            }\n"
+            "        }\n\n"
+            "        leaf leaf10 {\n"
+            "            type boolean;\n"
+            "        }\n\n");
+    strcpy(orig + strlen(orig),
+            "        leaf leaf11 {\n"
+            "            type enumeration {\n"
+            "                enum \"one\";\n"
+            "                enum \"two\";\n"
+            "                enum \"five\" {\n"
+            "                    value 5;\n"
+            "                }\n"
+            "            }\n"
+            "        }\n\n"
+            "        leaf leaf12 {\n"
+            "            type bits {\n"
+            "                bit flag0 {\n"
+            "                    position 0;\n"
+            "                }\n"
+            "                bit flag1;\n"
+            "                bit flag2 {\n"
+            "                    position 2;\n"
+            "                }\n"
+            "                bit flag3 {\n"
+            "                    position 3;\n"
+            "                }\n"
+            "            }\n"
+            "            default \"flag0 flag3\";\n"
+            "        }\n\n"
+            "        leaf leaf13 {\n"
+            "            type binary;\n"
+            "        }\n\n"
+            "        leaf leaf14 {\n"
+            "            type leafref {\n"
+            "                path \"/cont1/leaf17\";\n"
+            "            }\n"
+            "        }\n\n"
+            "        leaf leaf15 {\n"
+            "            type empty;\n"
+            "        }\n\n"
+            "        leaf leaf16 {\n"
+            "            type union {\n"
+            "                type instance-identifier {\n"
+            "                    require-instance true;\n"
+            "                }\n"
+            "                type int8;\n"
+            "            }\n"
+            "        }\n\n"
+            "        list list1 {\n"
+            "            key \"leaf18\";\n"
+            "            unique \"leaf19\";\n"
+            "            min-elements 1;\n"
+            "            max-elements 20;\n"
+            "            leaf leaf18 {\n"
+            "                type string;\n"
+            "            }\n\n"
+            "            leaf leaf19 {\n"
+            "                type uint32;\n"
+            "            }\n\n"
+            "            anyxml axml1;\n"
+            "            anydata adata1;\n\n"
+            "            action act1 {\n"
+            "                input {\n"
+            "                    leaf leaf24 {\n"
+            "                        type string;\n"
+            "                    }\n"
+            "                }\n\n"
+            "                output {\n"
+            "                    leaf leaf25 {\n"
+            "                        type string;\n"
+            "                    }\n"
+            "                }\n"
+            "            }\n\n"
+            "            notification notif1 {\n"
+            "                leaf leaf26 {\n"
+            "                    type string;\n"
+            "                }\n"
+            "            }\n"
+            "        }\n\n"
+            "        leaf-list llist1 {\n"
+            "            type tdef1;\n"
+            "            ordered-by user;\n"
+            "        }\n\n"
+            "        list list2 {\n"
+            "            key \"leaf27 leaf28\";\n"
+            "            leaf leaf27 {\n"
+            "                type uint8;\n"
+            "            }\n\n"
+            "            leaf leaf28 {\n"
+            "                type uint8;\n"
+            "            }\n"
+            "        }\n\n"
+            "        leaf leaf29 {\n"
+            "            type instance-identifier;\n"
+            "        }\n\n"
+            "        container must-deviations-container {\n"
+            "            presence \"Allows deviations on the leaf\";\n"
+            "            leaf leaf30 {\n"
+            "                type string;\n"
+            "            }\n"
+            "        }\n\n"
+            "        leaf leaf23 {\n"
+            "            type empty;\n"
+            "        }\n"
+            "    }\n\n"
+            "    augment \"/cont1\" {\n"
+            "        leaf leaf17 {\n"
+            "            type string;\n"
+            "        }\n"
+            "    }\n\n"
+            "    rpc rpc1 {\n"
+            "        input {\n"
+            "            leaf leaf20 {\n"
+            "                type tdef1;\n"
+            "            }\n"
+            "        }\n\n"
+            "        output {\n"
+            "            container cont2 {\n"
+            "                leaf leaf21 {\n"
+            "                    type empty;\n"
+            "                }\n"
+            "            }\n"
+            "        }\n"
+            "    }\n\n"
+            "    container test-when {\n"
+            "        leaf when-check {\n"
+            "            type boolean;\n"
+            "        }\n\n"
+            "        leaf gated-data {\n"
+            "            when \"../when-check = 'true'\";\n"
+            "            type uint16;\n"
+            "        }\n"
+            "    }\n\n"
+            "    extension c-define {\n"
+            "        description\n"
+            "            \"Takes as an argument a name string.\n"
+            "            Makes the code generator use the given name\n"
+            "            in the #define.\";\n"
+            "        argument \"name\";\n"
+            "    }\n"
+            "}\n");
+
+    char *ori_res = malloc(8096);
+
+    strcpy(ori_res,
+            "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"all\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:all_mod=\"urn:all\"\n"
+            "        xmlns:yt=\"urn:ietf:params:xml:ns:yang:ietf-yang-types\">\n"
+            "  <yang-version value=\"1.1\"/>\n"
+            "  <namespace uri=\"urn:all\"/>\n"
+            "  <prefix value=\"all_mod\"/>\n"
+            "  <import module=\"ietf-yang-types\">\n"
+            "    <prefix value=\"yt\"/>\n"
+            "    <revision-date date=\"2013-07-15\"/>\n"
+            "    <description>\n"
+            "      <text>YANG types</text>\n"
+            "    </description>\n"
+            "    <reference>\n"
+            "      <text>RFC reference</text>\n"
+            "    </reference>\n"
+            "  </import>\n"
+            "  <extension name=\"c-define\">\n"
+            "    <argument name=\"name\"/>\n"
+            "    <description>\n"
+            "      <text>Takes as an argument a name string.\n"
+            "Makes the code generator use the given name\n"
+            "in the #define.</text>\n"
+            "    </description>\n"
+            "  </extension>\n"
+            "  <feature name=\"feat1\">\n"
+            "    <if-feature name=\"feat2\"/>\n"
+            "    <status value=\"obsolete\"/>\n"
+            "  </feature>\n"
+            "  <feature name=\"feat2\"/>\n"
+            "  <feature name=\"feat3\"/>\n"
+            "  <identity name=\"ident2\">\n"
+            "    <base name=\"ident1\"/>\n"
+            "  </identity>\n"
+            "  <identity name=\"ident1\"/>\n"
+            "  <typedef name=\"tdef1\">\n"
+            "    <type name=\"tdef2\">\n"
+            "      <length value=\"3..9 | 30..40\"/>\n"
+            "      <pattern value=\"[ac]*\"/>\n"
+            "    </type>\n"
+            "    <units name=\"none\"/>\n"
+            "    <default value=\"aaa\"/>\n"
+            "  </typedef>\n"
+            "  <typedef name=\"tdef2\">\n"
+            "    <type name=\"string\">\n"
+            "      <length value=\"2..10 | 20..50\"/>\n"
+            "      <pattern value=\"[ab]*\"/>\n"
+            "    </type>\n"
+            "  </typedef>\n"
+            "  <grouping name=\"group1\">\n"
+            "    <leaf name=\"leaf1\">\n"
+            "      <type name=\"int8\"/>\n"
+            "    </leaf>\n"
+            "  </grouping>\n"
+            "  <container name=\"cont1\">\n"
+            "    <leaf name=\"leaf2\">\n"
+            "      <if-feature name=\"feat1\"/>\n"
+            "      <type name=\"int16\"/>\n"
+            "      <status value=\"obsolete\"/>\n"
+            "    </leaf>\n"
+            "    <uses name=\"group1\">\n"
+            "      <if-feature name=\"feat2\"/>\n"
+            "      <refine target-node=\"leaf1\">\n"
+            "        <if-feature name=\"feat3\"/>\n"
+            "        <must condition=\"24 - 4 = number('20')\"/>\n"
+            "        <default value=\"25\"/>\n"
+            "        <config value=\"true\"/>\n"
+            "        <mandatory value=\"false\"/>\n"
+            "        <description>\n"
+            "          <text>dsc</text>\n"
+            "        </description>\n"
+            "        <reference>\n"
+            "          <text>none</text>\n"
+            "        </reference>\n"
+            "      </refine>\n"
+            "    </uses>\n"
+            "    <leaf name=\"leaf3\">\n"
+            "      <type name=\"int32\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"leaf4\">\n"
+            "      <type name=\"int64\">\n"
+            "        <range value=\"1000 .. 50000\">\n"
+            "          <error-message>\n"
+            "            <value>Special error message.</value>\n"
+            "          </error-message>\n"
+            "          <error-app-tag value=\"special-tag\"/>\n"
+            "        </range>\n"
+            "      </type>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"leaf5\">\n"
+            "      <type name=\"uint8\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"leaf6\">\n"
+            "      <type name=\"uint16\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"leaf7\">\n"
+            "      <type name=\"uint32\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"leaf8\">\n"
+            "      <type name=\"uint64\"/>\n"
+            "    </leaf>\n"
+            "    <choice name=\"choic1\">\n"
+            "      <default value=\"leaf9b\"/>\n"
+            "      <leaf name=\"leaf9a\">\n"
+            "        <type name=\"decimal64\">\n"
+            "          <fraction-digits value=\"9\"/>\n"
+            "        </type>\n"
+            "      </leaf>\n"
+            "      <leaf name=\"leaf9b\">\n"
+            "        <type name=\"boolean\"/>\n"
+            "        <default value=\"false\"/>\n"
+            "      </leaf>\n"
+            "    </choice>\n"
+            "    <leaf name=\"leaf10\">\n"
+            "      <type name=\"boolean\"/>\n"
+            "    </leaf>\n");
+    strcpy(ori_res + strlen(ori_res),
+            "    <leaf name=\"leaf11\">\n"
+            "      <type name=\"enumeration\">\n"
+            "        <enum name=\"one\"/>\n"
+            "        <enum name=\"two\"/>\n"
+            "        <enum name=\"five\">\n"
+            "          <value value=\"5\"/>\n"
+            "        </enum>\n"
+            "      </type>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"leaf12\">\n"
+            "      <type name=\"bits\">\n"
+            "        <bit name=\"flag0\">\n"
+            "          <position value=\"0\"/>\n"
+            "        </bit>\n"
+            "        <bit name=\"flag1\"/>\n"
+            "        <bit name=\"flag2\">\n"
+            "          <position value=\"2\"/>\n"
+            "        </bit>\n"
+            "        <bit name=\"flag3\">\n"
+            "          <position value=\"3\"/>\n"
+            "        </bit>\n"
+            "      </type>\n"
+            "      <default value=\"flag0 flag3\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"leaf13\">\n"
+            "      <type name=\"binary\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"leaf14\">\n"
+            "      <type name=\"leafref\">\n"
+            "        <path value=\"/cont1/leaf17\"/>\n"
+            "      </type>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"leaf15\">\n"
+            "      <type name=\"empty\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"leaf16\">\n"
+            "      <type name=\"union\">\n"
+            "        <type name=\"instance-identifier\">\n"
+            "          <require-instance value=\"true\"/>\n"
+            "        </type>\n"
+            "        <type name=\"int8\"/>\n"
+            "      </type>\n"
+            "    </leaf>\n"
+            "    <list name=\"list1\">\n"
+            "      <key value=\"leaf18\"/>\n"
+            "      <unique tag=\"leaf19\"/>\n"
+            "      <min-elements value=\"1\"/>\n"
+            "      <max-elements value=\"20\"/>\n"
+            "      <leaf name=\"leaf18\">\n"
+            "        <type name=\"string\"/>\n"
+            "      </leaf>\n"
+            "      <leaf name=\"leaf19\">\n"
+            "        <type name=\"uint32\"/>\n"
+            "      </leaf>\n"
+            "      <anyxml name=\"axml1\"/>\n"
+            "      <anydata name=\"adata1\"/>\n"
+            "      <action name=\"act1\">\n"
+            "        <input>\n"
+            "          <leaf name=\"leaf24\">\n"
+            "            <type name=\"string\"/>\n"
+            "          </leaf>\n"
+            "        </input>\n"
+            "        <output>\n"
+            "          <leaf name=\"leaf25\">\n"
+            "            <type name=\"string\"/>\n"
+            "          </leaf>\n"
+            "        </output>\n"
+            "      </action>\n"
+            "      <notification name=\"notif1\">\n"
+            "        <leaf name=\"leaf26\">\n"
+            "          <type name=\"string\"/>\n"
+            "        </leaf>\n"
+            "      </notification>\n"
+            "    </list>\n"
+            "    <leaf-list name=\"llist1\">\n"
+            "      <type name=\"tdef1\"/>\n"
+            "      <ordered-by value=\"user\"/>\n"
+            "    </leaf-list>\n"
+            "    <list name=\"list2\">\n"
+            "      <key value=\"leaf27 leaf28\"/>\n"
+            "      <leaf name=\"leaf27\">\n"
+            "        <type name=\"uint8\"/>\n"
+            "      </leaf>\n"
+            "      <leaf name=\"leaf28\">\n"
+            "        <type name=\"uint8\"/>\n"
+            "      </leaf>\n"
+            "    </list>\n"
+            "    <leaf name=\"leaf29\">\n"
+            "      <type name=\"instance-identifier\"/>\n"
+            "    </leaf>\n"
+            "    <container name=\"must-deviations-container\">\n"
+            "      <presence value=\"Allows deviations on the leaf\"/>\n"
+            "      <leaf name=\"leaf30\">\n"
+            "        <type name=\"string\"/>\n"
+            "      </leaf>\n"
+            "    </container>\n"
+            "    <leaf name=\"leaf23\">\n"
+            "      <type name=\"empty\"/>\n"
+            "    </leaf>\n"
+            "  </container>\n"
+            "  <container name=\"test-when\">\n"
+            "    <leaf name=\"when-check\">\n"
+            "      <type name=\"boolean\"/>\n"
+            "    </leaf>\n"
+            "    <leaf name=\"gated-data\">\n"
+            "      <when condition=\"../when-check = 'true'\"/>\n"
+            "      <type name=\"uint16\"/>\n"
+            "    </leaf>\n"
+            "  </container>\n"
+            "  <augment target-node=\"/cont1\">\n"
+            "    <leaf name=\"leaf17\">\n"
+            "      <type name=\"string\"/>\n"
+            "    </leaf>\n"
+            "  </augment>\n"
+            "  <rpc name=\"rpc1\">\n"
+            "    <input>\n"
+            "      <leaf name=\"leaf20\">\n"
+            "        <type name=\"tdef1\"/>\n"
+            "      </leaf>\n"
+            "    </input>\n"
+            "    <output>\n"
+            "      <container name=\"cont2\">\n"
+            "        <leaf name=\"leaf21\">\n"
+            "          <type name=\"empty\"/>\n"
+            "        </leaf>\n"
+            "      </container>\n"
+            "    </output>\n"
+            "  </rpc>\n"
+            "</module>\n");
+
+    char *printed;
+    struct ly_out *out;
+
+    assert_int_equal(LY_SUCCESS, ly_out_new_memory(&printed, 0, &out));
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    assert_int_equal(LY_SUCCESS, lys_print_module(out, mod, LYS_OUT_YIN, 0, 0));
+    assert_int_equal(strlen(ori_res), ly_out_printed(out));
+    assert_string_equal(printed, ori_res);
+
+    ly_out_free(out, NULL, 1);
+    free(orig);
+    free(ori_res);
+}
+
+static LY_ERR
+test_imp_clb(const char *UNUSED(mod_name), const char *UNUSED(mod_rev), const char *UNUSED(submod_name),
+        const char *UNUSED(sub_rev), void *user_data, LYS_INFORMAT *format,
+        const char **module_data, void (**free_module_data)(void *model_data, void *user_data))
+{
+    *module_data = user_data;
+    *format = LYS_IN_YIN;
+    *free_module_data = NULL;
+    return LY_SUCCESS;
+}
+
+static void
+test_print_submodule(void **state)
+{
+    struct lys_module *mod;
+
+    const char *mod_yin =
+            "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"a\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:a_mod=\"urn:a\">\n"
+            "  <yang-version value=\"1.1\"/>\n"
+            "  <namespace uri=\"urn:a\"/>\n"
+            "  <prefix value=\"a_mod\"/>\n"
+            "  <include module=\"a-sub\"/>\n"
+            "</module>\n";
+
+    char *submod_yin =
+            "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<submodule name=\"a-sub\"\n"
+            "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n"
+            "        xmlns:a_mod=\"urn:a\"\n"
+            "        xmlns:yt=\"urn:ietf:params:xml:ns:yang:ietf-yang-types\">\n"
+            "  <yang-version value=\"1.1\"/>\n"
+            "  <belongs-to module=\"a\">\n"
+            "    <prefix value=\"a_mod\"/>\n"
+            "  </belongs-to>\n"
+            "  <import module=\"ietf-yang-types\">\n"
+            "    <prefix value=\"yt\"/>\n"
+            "    <revision-date date=\"2013-07-15\"/>\n"
+            "  </import>\n\n"
+            "  <description>\n"
+            "    <text>YANG types</text>\n"
+            "  </description>\n"
+            "  <reference>\n"
+            "    <text>RFC reference</text>\n"
+            "  </reference>\n"
+            "</submodule>\n";
+
+    char *printed;
+    struct ly_out *out;
+
+    assert_int_equal(LY_SUCCESS, ly_out_new_memory(&printed, 0, &out));
+
+    ly_ctx_set_module_imp_clb(UTEST_LYCTX, test_imp_clb, submod_yin);
+
+    UTEST_ADD_MODULE(mod_yin, LYS_IN_YIN, NULL, &mod);
+    assert_int_equal(LY_SUCCESS, lys_print_submodule(out, mod->parsed->includes[0].submodule, LYS_OUT_YIN, 0, 0));
+    assert_int_equal(strlen(submod_yin), ly_out_printed(out));
+    assert_string_equal(printed, submod_yin);
+
+    ly_out_free(out, NULL, 1);
+}
+
+/* helper function to simplify unit test of each element using parse_content function */
+LY_ERR
+test_element_helper(void **state, const char *data, void *dest, const char **text, struct lysp_ext_instance **exts)
+{
+    const char *name, *prefix;
+    size_t name_len, prefix_len;
+    LY_ERR ret = LY_SUCCESS;
+    struct yin_subelement subelems[71] = {
+        {LY_STMT_ACTION, dest, 0},
+        {LY_STMT_ANYDATA, dest, 0},
+        {LY_STMT_ANYXML, dest, 0},
+        {LY_STMT_ARGUMENT, dest, 0},
+        {LY_STMT_AUGMENT, dest, 0},
+        {LY_STMT_BASE, dest, 0},
+        {LY_STMT_BELONGS_TO, dest, 0},
+        {LY_STMT_BIT, dest, 0},
+        {LY_STMT_CASE, dest, 0},
+        {LY_STMT_CHOICE, dest, 0},
+        {LY_STMT_CONFIG, dest, 0},
+        {LY_STMT_CONTACT, dest, 0},
+        {LY_STMT_CONTAINER, dest, 0},
+        {LY_STMT_DEFAULT, dest, YIN_SUBELEM_UNIQUE},
+        {LY_STMT_DESCRIPTION, dest, 0},
+        {LY_STMT_DEVIATE, dest, 0},
+        {LY_STMT_DEVIATION, dest, 0},
+        {LY_STMT_ENUM, dest, 0},
+        {LY_STMT_ERROR_APP_TAG, dest, YIN_SUBELEM_UNIQUE},
+        {LY_STMT_ERROR_MESSAGE, dest, 0},
+        {LY_STMT_EXTENSION, dest, 0},
+        {LY_STMT_FEATURE, dest, 0},
+        {LY_STMT_FRACTION_DIGITS, dest, 0},
+        {LY_STMT_GROUPING, dest, 0},
+        {LY_STMT_IDENTITY, dest, 0},
+        {LY_STMT_IF_FEATURE, dest, 0},
+        {LY_STMT_IMPORT, dest, 0},
+        {LY_STMT_INCLUDE, dest, 0},
+        {LY_STMT_INPUT, dest, 0},
+        {LY_STMT_KEY, dest, YIN_SUBELEM_UNIQUE},
+        {LY_STMT_LEAF, dest, 0},
+        {LY_STMT_LEAF_LIST, dest, 0},
+        {LY_STMT_LENGTH, dest, 0},
+        {LY_STMT_LIST, dest, 0},
+        {LY_STMT_MANDATORY, dest, 0},
+        {LY_STMT_MAX_ELEMENTS, dest, 0},
+        {LY_STMT_MIN_ELEMENTS, dest, 0},
+        {LY_STMT_MODIFIER, dest, 0},
+        {LY_STMT_MODULE, dest, 0},
+        {LY_STMT_MUST, dest, 0},
+        {LY_STMT_NAMESPACE, dest, YIN_SUBELEM_UNIQUE},
+        {LY_STMT_NOTIFICATION, dest, 0},
+        {LY_STMT_ORDERED_BY, dest, 0},
+        {LY_STMT_ORGANIZATION, dest, 0},
+        {LY_STMT_OUTPUT, dest, 0},
+        {LY_STMT_PATH, dest, 0},
+        {LY_STMT_PATTERN, dest, 0},
+        {LY_STMT_POSITION, dest, 0},
+        {LY_STMT_PREFIX, dest, YIN_SUBELEM_UNIQUE},
+        {LY_STMT_PRESENCE, dest, YIN_SUBELEM_UNIQUE},
+        {LY_STMT_RANGE, dest, 0},
+        {LY_STMT_REFERENCE, dest, 0},
+        {LY_STMT_REFINE, dest, 0},
+        {LY_STMT_REQUIRE_INSTANCE, dest, 0},
+        {LY_STMT_REVISION, dest, 0},
+        {LY_STMT_REVISION_DATE, dest, 0},
+        {LY_STMT_RPC, dest, 0},
+        {LY_STMT_STATUS, dest, 0},
+        {LY_STMT_SUBMODULE, dest, 0},
+        {LY_STMT_TYPE, dest, 0},
+        {LY_STMT_TYPEDEF, dest, 0},
+        {LY_STMT_UNIQUE, dest, 0},
+        {LY_STMT_UNITS, dest, YIN_SUBELEM_UNIQUE},
+        {LY_STMT_USES, dest, 0},
+        {LY_STMT_VALUE, dest, 0},
+        {LY_STMT_WHEN, dest, 0},
+        {LY_STMT_YANG_VERSION, dest, 0},
+        {LY_STMT_YIN_ELEMENT, dest, 0},
+        {LY_STMT_EXTENSION_INSTANCE, dest, 0},
+        {LY_STMT_ARG_TEXT, dest, 0},
+        {LY_STMT_ARG_VALUE, dest, 0}
+    };
+
+    YCTX->main_ctx = (struct lysp_ctx *)YCTX;
+    ly_in_new_memory(data, &UTEST_IN);
+    lyxml_ctx_new(UTEST_LYCTX, UTEST_IN, &YCTX->xmlctx);
+    prefix = YCTX->xmlctx->prefix;
+    prefix_len = YCTX->xmlctx->prefix_len;
+    name = YCTX->xmlctx->name;
+    name_len = YCTX->xmlctx->name_len;
+    lyxml_ctx_next(YCTX->xmlctx);
+
+    ret = yin_parse_content(YCTX, subelems, 71, NULL,
+            yin_match_keyword(YCTX, name, name_len, prefix, prefix_len, LY_STMT_NONE), text, exts);
+
+    /* free parser and input */
+    lyxml_ctx_free(YCTX->xmlctx);
+    YCTX->xmlctx = NULL;
+    ly_in_free(UTEST_IN, 0);
+    UTEST_IN = NULL;
+    return ret;
+}
+
+#define EXT_SUBELEM "<myext:c-define name=\"MY_MTU\" xmlns:myext=\"urn:example:extensions\"/>"
+
+static void
+test_enum_elem(void **state)
+{
+    struct lysp_type type = {0};
+    const char *data;
+
+    data = ELEMENT_WRAPPER_START
+            "<enum name=\"enum-name\">\n"
+            "     <if-feature name=\"feature\" />\n"
+            "     <value value=\"55\" />\n"
+            "     <status value=\"deprecated\" />\n"
+            "     <description><text>desc...</text></description>\n"
+            "     <reference><text>ref...</text></reference>\n"
+            "     " EXT_SUBELEM "\n"
+            "</enum>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    uint16_t flags = LYS_STATUS_DEPRC | LYS_SET_VALUE;
+
+    CHECK_LYSP_TYPE_ENUM(type.enums, "desc...", 1, flags, 1, "enum-name", "ref...", 55);
+    assert_string_equal(type.enums->iffeatures[0].str, "feature");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(type.enums->exts, LY_STMT_ENUM);
+    lysp_type_free(&fctx, &type);
+    memset(&type, 0, sizeof type);
+
+    data = ELEMENT_WRAPPER_START
+            "<enum name=\"enum-name\"></enum>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(type.enums->name, "enum-name");
+    lysp_type_free(&fctx, &type);
+    memset(&type, 0, sizeof type);
+}
+
+static void
+test_bit_elem(void **state)
+{
+    struct lysp_type type = {0};
+    const char *data;
+
+    data = ELEMENT_WRAPPER_START
+            "<bit name=\"bit-name\">\n"
+            "    <if-feature name=\"feature\" />\n"
+            "    <position value=\"55\" />\n"
+            "    <status value=\"deprecated\" />\n"
+            "    <description><text>desc...</text></description>\n"
+            "    <reference><text>ref...</text></reference>\n"
+            EXT_SUBELEM
+            "</bit>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    uint16_t flags = LYS_STATUS_DEPRC | LYS_SET_VALUE;
+
+    CHECK_LYSP_TYPE_ENUM(type.bits, "desc...", 1, flags, 1, "bit-name", "ref...", 55);
+    assert_string_equal(type.bits->iffeatures[0].str, "feature");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(type.bits->exts, LY_STMT_BIT);
+    lysp_type_free(&fctx, &type);
+    memset(&type, 0, sizeof type);
+
+    data = ELEMENT_WRAPPER_START
+            "<bit name=\"bit-name\"> </bit>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    CHECK_LYSP_TYPE_ENUM(type.bits, NULL, 0, 0, 0, "bit-name", NULL, 0);
+    lysp_type_free(&fctx, &type);
+    memset(&type, 0, sizeof type);
+}
+
+static void
+test_status_elem(void **state)
+{
+    const char *data;
+    uint16_t flags = 0;
+
+    /* test invalid value */
+    data = ELEMENT_WRAPPER_START "<status value=\"invalid\"></status>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &flags, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"invalid\" of \"value\" attribute in \"status\" element. "
+            "Valid values are \"current\", \"deprecated\" and \"obsolete\".", "Line number 1.");
+}
+
+static void
+test_yin_element_elem(void **state)
+{
+    const char *data;
+    uint16_t flags = 0;
+
+    data = ELEMENT_WRAPPER_START "<yin-element value=\"invalid\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &flags, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"invalid\" of \"value\" attribute in \"yin-element\" element. "
+            "Valid values are \"true\" and \"false\".", "Line number 1.");
+}
+
+static void
+test_yangversion_elem(void **state)
+{
+    const char *data;
+    uint8_t version = 0;
+
+    /* invalid value */
+    data = ELEMENT_WRAPPER_START "<yang-version value=\"version\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &version, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"version\" of \"value\" attribute in \"yang-version\" element. "
+            "Valid values are \"1\" and \"1.1\".", "Line number 1.");
+}
+
+static void
+test_argument_elem(void **state)
+{
+    const char *data;
+    uint16_t flags = 0;
+    const char *arg;
+    struct yin_argument_meta arg_meta = {&flags, &arg};
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START
+            "<argument name=\"arg\">"
+            "</argument>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &arg_meta, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(arg, "arg");
+    assert_true(flags == 0);
+    lydict_remove(UTEST_LYCTX, arg);
+}
+
+static void
+test_belongsto_elem(void **state)
+{
+    const char *data;
+    struct lysp_submodule submod;
+
+    lydict_insert(UTEST_LYCTX, "module-name", 0, &PARSER_CUR_PMOD(YCTX)->mod->name);
+
+    data = ELEMENT_WRAPPER_START "<belongs-to module=\"module-name\"></belongs-to>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &submod, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Missing mandatory sub-element \"prefix\" of \"belongs-to\" element.", "Line number 1.");
+}
+
+static void
+test_config_elem(void **state)
+{
+    const char *data;
+    uint16_t flags = 0;
+
+    data = ELEMENT_WRAPPER_START "<config value=\"false\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &flags, NULL, NULL), LY_SUCCESS);
+    assert_true(flags & LYS_CONFIG_R);
+    flags = 0;
+
+    data = ELEMENT_WRAPPER_START "<config value=\"invalid\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &flags, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"invalid\" of \"value\" attribute in \"config\" element. "
+            "Valid values are \"true\" and \"false\".", "Line number 1.");
+}
+
+static void
+test_default_elem(void **state)
+{
+    const char *data;
+    struct lysp_qname val = {0};
+
+    data = ELEMENT_WRAPPER_START "<default/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &val, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Missing mandatory attribute value of default element.", "Line number 1.");
+}
+
+static void
+test_err_app_tag_elem(void **state)
+{
+    const char *data;
+    const char *val = NULL;
+
+    data = ELEMENT_WRAPPER_START "<error-app-tag/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &val, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Missing mandatory attribute value of error-app-tag element.", "Line number 1.");
+}
+
+static void
+test_err_msg_elem(void **state)
+{
+    const char *data;
+    const char *val = NULL;
+
+    data = ELEMENT_WRAPPER_START "<error-message></error-message>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &val, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Missing mandatory sub-element \"value\" of \"error-message\" element.", "Line number 1.");
+
+    data = ELEMENT_WRAPPER_START "<error-message invalid=\"text\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &val, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Unexpected attribute \"invalid\" of \"error-message\" element.", "Line number 1.");
+}
+
+static void
+test_fracdigits_elem(void **state)
+{
+    const char *data;
+    struct lysp_type type = {0};
+
+    /* invalid values */
+    data = ELEMENT_WRAPPER_START "<fraction-digits value=\"-1\"></fraction-digits>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"-1\" of \"value\" attribute in \"fraction-digits\" element.", "Line number 1.");
+
+    data = ELEMENT_WRAPPER_START "<fraction-digits value=\"02\"></fraction-digits>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"02\" of \"value\" attribute in \"fraction-digits\" element.", "Line number 1.");
+
+    data = ELEMENT_WRAPPER_START "<fraction-digits value=\"1p\"></fraction-digits>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"1p\" of \"value\" attribute in \"fraction-digits\" element.", "Line number 1.");
+
+    data = ELEMENT_WRAPPER_START "<fraction-digits value=\"19\"></fraction-digits>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"19\" of \"value\" attribute in \"fraction-digits\" element.", "Line number 1.");
+
+    data = ELEMENT_WRAPPER_START "<fraction-digits value=\"999999999999999999\"></fraction-digits>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"999999999999999999\" of \"value\" attribute in \"fraction-digits\" element.", "Line number 1.");
+}
+
+static void
+test_iffeature_elem(void **state)
+{
+    const char *data;
+    const char **iffeatures = NULL;
+
+    data = ELEMENT_WRAPPER_START "<if-feature/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &iffeatures, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Missing mandatory attribute name of if-feature element.", "Line number 1.");
+    LY_ARRAY_FREE(iffeatures);
+    iffeatures = NULL;
+}
+
+static void
+test_length_elem(void **state)
+{
+    const char *data;
+    struct lysp_type type = {0};
+
+    /* max subelems */
+    data = ELEMENT_WRAPPER_START
+            "<length value=\"length-str\">\n"
+            "    <error-message><value>err-msg</value></error-message>\n"
+            "    <error-app-tag value=\"err-app-tag\"/>\n"
+            "    <description><text>desc</text></description>\n"
+            "    <reference><text>ref</text></reference>\n"
+            EXT_SUBELEM
+            "</length>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    CHECK_LYSP_RESTR(type.length, "length-str", "desc",
+            "err-app-tag", "err-msg", 1, "ref");
+    assert_true(type.flags & LYS_SET_LENGTH);
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(type.length->exts[0]), LY_STMT_LENGTH);
+    lysp_type_free(&fctx, &type);
+    memset(&type, 0, sizeof(type));
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START
+            "<length value=\"length-str\">"
+            "</length>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    CHECK_LYSP_RESTR(type.length, "length-str", NULL,
+            NULL, NULL, 0, NULL);
+    lysp_type_free(&fctx, &type);
+    assert_true(type.flags & LYS_SET_LENGTH);
+    memset(&type, 0, sizeof(type));
+
+    data = ELEMENT_WRAPPER_START "<length></length>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Missing mandatory attribute value of length element.", "Line number 1.");
+    lysp_type_free(&fctx, &type);
+    memset(&type, 0, sizeof(type));
+}
+
+static void
+test_modifier_elem(void **state)
+{
+    const char *data;
+    const char *pat;
+
+    assert_int_equal(LY_SUCCESS, lydict_insert(UTEST_LYCTX, "\006pattern", 8, &pat));
+    data = ELEMENT_WRAPPER_START "<modifier value=\"invert\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &pat, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"invert\" of \"value\" attribute in \"modifier\" element. "
+            "Only valid value is \"invert-match\".", "Line number 1.");
+    lydict_remove(UTEST_LYCTX, pat);
+}
+
+static void
+test_namespace_elem(void **state)
+{
+    const char *data;
+    const char *ns;
+
+    data = ELEMENT_WRAPPER_START "<namespace/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &ns, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Missing mandatory attribute uri of namespace element.", "Line number 1.");
+}
+
+static void
+test_pattern_elem(void **state)
+{
+    const char *data;
+    struct lysp_type type = {0};
+
+    /* max subelems */
+    data = ELEMENT_WRAPPER_START
+            "<pattern value=\"super_pattern\">\n"
+            "    <modifier value=\"invert-match\"/>\n"
+            "    <error-message><value>err-msg-value</value></error-message>\n"
+            "    <error-app-tag value=\"err-app-tag-value\"/>\n"
+            "    <description><text>&quot;pattern-desc&quot;</text></description>\n"
+            "    <reference><text>pattern-ref</text></reference>\n"
+            EXT_SUBELEM
+            "</pattern>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    assert_true(type.flags & LYS_SET_PATTERN);
+    CHECK_LYSP_RESTR(type.patterns, "\x015super_pattern", "\"pattern-desc\"",
+            "err-app-tag-value", "err-msg-value", 1, "pattern-ref");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(type.patterns->exts[0]), LY_STMT_PATTERN);
+    lysp_type_free(&fctx, &type);
+    memset(&type, 0, sizeof(type));
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START "<pattern value=\"pattern\"> </pattern>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    CHECK_LYSP_RESTR(type.patterns, "\x006pattern", NULL, NULL, NULL, 0, NULL);
+    lysp_type_free(&fctx, &type);
+    memset(&type, 0, sizeof(type));
+}
+
+static void
+test_value_position_elem(void **state)
+{
+    const char *data;
+    struct lysp_type_enum en = {0};
+
+    /* valid values */
+    data = ELEMENT_WRAPPER_START "<value value=\"-55\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &en, NULL, NULL), LY_SUCCESS);
+    CHECK_LYSP_TYPE_ENUM(&(en), NULL, 0, LYS_SET_VALUE, 0, NULL, NULL, -55);
+    memset(&en, 0, sizeof(en));
+
+    data = ELEMENT_WRAPPER_START "<value value=\"0\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &en, NULL, NULL), LY_SUCCESS);
+    CHECK_LYSP_TYPE_ENUM(&(en), NULL, 0, LYS_SET_VALUE, 0, NULL, NULL, 0);
+    memset(&en, 0, sizeof(en));
+
+    data = ELEMENT_WRAPPER_START "<value value=\"-0\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &en, NULL, NULL), LY_SUCCESS);
+    CHECK_LYSP_TYPE_ENUM(&(en), NULL, 0, LYS_SET_VALUE, 0, NULL, NULL, 0);
+    memset(&en, 0, sizeof(en));
+
+    /* valid positions */
+    data = ELEMENT_WRAPPER_START "<position value=\"0\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &en, NULL, NULL), LY_SUCCESS);
+    CHECK_LYSP_TYPE_ENUM(&(en), NULL, 0, LYS_SET_VALUE, 0, NULL, NULL, 0);
+    memset(&en, 0, sizeof(en));
+
+    /* invalid values */
+    data = ELEMENT_WRAPPER_START "<value value=\"99999999999999999999999\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &en, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"99999999999999999999999\" of \"value\" attribute in \"value\" element.", "Line number 1.");
+
+    data = ELEMENT_WRAPPER_START "<value value=\"1k\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &en, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"1k\" of \"value\" attribute in \"value\" element.", "Line number 1.");
+
+    data = ELEMENT_WRAPPER_START "<value value=\"\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &en, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"\" of \"value\" attribute in \"value\" element.", "Line number 1.");
+
+    /*invalid positions */
+    data = ELEMENT_WRAPPER_START "<position value=\"-5\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &en, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"-5\" of \"value\" attribute in \"position\" element.", "Line number 1.");
+
+    data = ELEMENT_WRAPPER_START "<position value=\"-0\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &en, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"-0\" of \"value\" attribute in \"position\" element.", "Line number 1.");
+
+    data = ELEMENT_WRAPPER_START "<position value=\"99999999999999999999\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &en, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"99999999999999999999\" of \"value\" attribute in \"position\" element.", "Line number 1.");
+
+    data = ELEMENT_WRAPPER_START "<position value=\"\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &en, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"\" of \"value\" attribute in \"position\" element.", "Line number 1.");
+}
+
+static void
+test_prefix_elem(void **state)
+{
+    const char *data;
+    const char *value = NULL;
+
+    data = ELEMENT_WRAPPER_START "<prefix value=\"pref\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &value, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(value, "pref");
+    lydict_remove(UTEST_LYCTX, value);
+}
+
+static void
+test_range_elem(void **state)
+{
+    const char *data;
+    struct lysp_type type = {0};
+
+    /* max subelems */
+    data = ELEMENT_WRAPPER_START
+            "<range value=\"range-str\">\n"
+            "    <error-message><value>err-msg</value></error-message>\n"
+            "    <error-app-tag value=\"err-app-tag\" />\n"
+            "    <description><text>desc</text></description>\n"
+            "    <reference><text>ref</text></reference>\n"
+            EXT_SUBELEM
+            "</range>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    CHECK_LYSP_RESTR(type.range, "range-str", "desc",
+            "err-app-tag", "err-msg", 1, "ref");
+    assert_true(type.flags & LYS_SET_RANGE);
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(type.range->exts[0]), LY_STMT_RANGE);
+    lysp_type_free(&fctx, &type);
+    memset(&type, 0, sizeof(type));
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START "<range value=\"range-str\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    CHECK_LYSP_RESTR(type.range, "range-str", NULL,
+            NULL, NULL, 0, NULL);
+    lysp_type_free(&fctx, &type);
+    memset(&type, 0, sizeof(type));
+}
+
+static void
+test_reqinstance_elem(void **state)
+{
+    const char *data;
+    struct lysp_type type = {0};
+
+    data = ELEMENT_WRAPPER_START "<require-instance value=\"true\">" EXT_SUBELEM "</require-instance>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    assert_int_equal(type.require_instance, 1);
+    assert_true(type.flags & LYS_SET_REQINST);
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(type.exts[0]), LY_STMT_REQUIRE_INSTANCE);
+    lysp_type_free(&fctx, &type);
+    memset(&type, 0, sizeof(type));
+
+    data = ELEMENT_WRAPPER_START "<require-instance value=\"false\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    assert_int_equal(type.require_instance, 0);
+    assert_true(type.flags & LYS_SET_REQINST);
+    memset(&type, 0, sizeof(type));
+
+    data = ELEMENT_WRAPPER_START "<require-instance value=\"invalid\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_EVALID);
+    memset(&type, 0, sizeof(type));
+    CHECK_LOG_CTX("Invalid value \"invalid\" of \"value\" attribute in \"require-instance\" element. "
+            "Valid values are \"true\" and \"false\".", "Line number 1.");
+}
+
+static void
+test_revision_date_elem(void **state)
+{
+    const char *data;
+    char rev[LY_REV_SIZE];
+
+    data = ELEMENT_WRAPPER_START "<revision-date date=\"2000-01-01\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, rev, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(rev, "2000-01-01");
+
+    data = ELEMENT_WRAPPER_START "<revision-date date=\"2000-50-05\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, rev, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"2000-50-05\" of \"revision-date\".", "Line number 1.");
+}
+
+static void
+test_unique_elem(void **state)
+{
+    const char *data;
+    const char **values = NULL;
+
+    data = ELEMENT_WRAPPER_START "<unique tag=\"tag\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &values, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(*values, "tag");
+    lydict_remove(UTEST_LYCTX, *values);
+    LY_ARRAY_FREE(values);
+    values = NULL;
+}
+
+static void
+test_units_elem(void **state)
+{
+    const char *data;
+    const char *values = NULL;
+
+    data = ELEMENT_WRAPPER_START "<units name=\"name\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &values, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(values, "name");
+    lydict_remove(UTEST_LYCTX, values);
+    values = NULL;
+}
+
+static void
+test_yin_text_value_elem(void **state)
+{
+    const char *data;
+    const char *val;
+
+    data = ELEMENT_WRAPPER_START "<text>text</text>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &val, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(val, "text");
+    lydict_remove(UTEST_LYCTX, val);
+
+    data = "<error-message xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"> <value>text</value> </error-message>";
+    assert_int_equal(test_element_helper(state, data, &val, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(val, "text");
+    lydict_remove(UTEST_LYCTX, val);
+
+    data = ELEMENT_WRAPPER_START "<text></text>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &val, NULL, NULL), LY_SUCCESS);
+    assert_string_equal("", val);
+    lydict_remove(UTEST_LYCTX, val);
+}
+
+static void
+test_type_elem(void **state)
+{
+    const char *data;
+    struct lysp_type type = {0};
+
+    /* max subelems */
+    data = ELEMENT_WRAPPER_START
+            "<type name=\"type-name\">\n"
+            "    <base name=\"base-name\"/>\n"
+            "    <bit name=\"bit\"/>\n"
+            "    <enum name=\"enum\"/>\n"
+            "    <fraction-digits value=\"2\"/>\n"
+            "    <length value=\"length\"/>\n"
+            "    <path value=\"/path\"/>\n"
+            "    <pattern value=\"pattern\"/>\n"
+            "    <range value=\"range\" />\n"
+            "    <require-instance value=\"true\"/>\n"
+            "    <type name=\"sub-type-name\"/>\n"
+            EXT_SUBELEM
+            "</type>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(type.name, "type-name");
+    assert_string_equal(*type.bases, "base-name");
+    assert_string_equal(type.bits->name,  "bit");
+    assert_string_equal(type.enums->name,  "enum");
+    assert_int_equal(type.fraction_digits, 2);
+    CHECK_LYSP_RESTR(type.length, "length", NULL,
+            NULL, NULL, 0, NULL);
+    assert_string_equal(type.path->expr, "/path");
+    CHECK_LYSP_RESTR(type.patterns, "\006pattern", NULL,
+            NULL, NULL, 0, NULL);
+    CHECK_LYSP_RESTR(type.range, "range", NULL,
+            NULL, NULL, 0, NULL);
+    assert_int_equal(type.require_instance, 1);
+    assert_string_equal(type.types->name, "sub-type-name");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(type.exts[0]), LY_STMT_TYPE);
+    assert_true(type.flags & LYS_SET_BASE);
+    assert_true(type.flags & LYS_SET_BIT);
+    assert_true(type.flags & LYS_SET_ENUM);
+    assert_true(type.flags & LYS_SET_FRDIGITS);
+    assert_true(type.flags & LYS_SET_LENGTH);
+    assert_true(type.flags & LYS_SET_PATH);
+    assert_true(type.flags & LYS_SET_PATTERN);
+    assert_true(type.flags & LYS_SET_RANGE);
+    assert_true(type.flags & LYS_SET_REQINST);
+    assert_true(type.flags & LYS_SET_TYPE);
+    lysp_type_free(&fctx, &type);
+    memset(&type, 0, sizeof(type));
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START "<type name=\"type-name\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &type, NULL, NULL), LY_SUCCESS);
+    lysp_type_free(&fctx, &type);
+    memset(&type, 0, sizeof(type));
+}
+
+static void
+test_max_elems_elem(void **state)
+{
+    const char *data;
+    struct lysp_node_list list = {0};
+    struct lysp_refine refine = {0};
+
+    data = "<refine xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"> <max-elements value=\"10\"/> </refine>";
+    assert_int_equal(test_element_helper(state, data, &refine, NULL, NULL), LY_SUCCESS);
+    assert_int_equal(refine.max, 10);
+    assert_true(refine.flags & LYS_SET_MAX);
+
+    data = "<list xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"> <max-elements value=\"0\"/> </list>";
+    assert_int_equal(test_element_helper(state, data, &list, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"0\" of \"value\" attribute in \"max-elements\" element.", "Line number 1.");
+
+    data = "<list xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"> <max-elements value=\"-10\"/> </list>";
+    assert_int_equal(test_element_helper(state, data, &list, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"-10\" of \"value\" attribute in \"max-elements\" element.", "Line number 1.");
+
+    data = "<list xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"> <max-elements value=\"k\"/> </list>";
+    assert_int_equal(test_element_helper(state, data, &list, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"k\" of \"value\" attribute in \"max-elements\" element.", "Line number 1.");
+
+    data = "<list xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"> <max-elements value=\"u12\"/> </list>";
+    assert_int_equal(test_element_helper(state, data, &list, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"u12\" of \"value\" attribute in \"max-elements\" element.", "Line number 1.");
+}
+
+static void
+test_min_elems_elem(void **state)
+{
+    const char *data;
+    struct lysp_node_leaflist llist = {0};
+
+    data = "<leaf-list xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"> <min-elements value=\"-5\"/> </leaf-list>";
+    assert_int_equal(test_element_helper(state, data, &llist, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Value \"-5\" of \"value\" attribute in \"min-elements\" element is out of bounds.", "Line number 1.");
+
+    data = "<leaf-list xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"> <min-elements value=\"99999999999999999\"/> </leaf-list>";
+    assert_int_equal(test_element_helper(state, data, &llist, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Value \"99999999999999999\" of \"value\" attribute in \"min-elements\" element is out of bounds.", "Line number 1.");
+
+    data = "<leaf-list xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"> <min-elements value=\"5k\"/> </leaf-list>";
+    assert_int_equal(test_element_helper(state, data, &llist, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"5k\" of \"value\" attribute in \"min-elements\" element.", "Line number 1.");
+
+    data = "<leaf-list xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"> <min-elements value=\"05\"/> </leaf-list>";
+    assert_int_equal(test_element_helper(state, data, &llist, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"05\" of \"value\" attribute in \"min-elements\" element.", "Line number 1.");
+}
+
+static void
+test_ordby_elem(void **state)
+{
+    const char *data;
+    uint16_t flags = 0;
+
+    data = ELEMENT_WRAPPER_START "<ordered-by value=\"user\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &flags, NULL, NULL), LY_SUCCESS);
+    assert_true(flags & LYS_ORDBY_USER);
+
+    data = ELEMENT_WRAPPER_START "<ordered-by value=\"inv\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &flags, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"inv\" of \"value\" attribute in \"ordered-by\" element. "
+            "Valid values are \"system\" and \"user\".", "Line number 1.");
+}
+
+static void
+test_any_elem(void **state)
+{
+    const char *data;
+    struct lysp_node *siblings = NULL;
+    struct tree_node_meta node_meta = {.parent = NULL, .nodes = &siblings};
+    struct lysp_node_anydata *parsed = NULL;
+    uint16_t flags;
+
+    /* anyxml max subelems */
+    data = ELEMENT_WRAPPER_START
+            "<anyxml name=\"any-name\">\n"
+            "    <config value=\"true\" />\n"
+            "    <description><text>desc</text></description>\n"
+            "    <if-feature name=\"feature\" />\n"
+            "    <mandatory value=\"true\" />\n"
+            "    <must condition=\"must-cond\" />\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"deprecated\"/>\n"
+            "    <when condition=\"when-cond\"/>\n"
+            EXT_SUBELEM
+            "</anyxml>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_anydata *)siblings;
+    flags = LYS_CONFIG_W | LYS_MAND_TRUE | LYS_STATUS_DEPRC;
+    CHECK_LYSP_NODE(parsed, "desc", 1, flags, 1,
+            "any-name", 0, LYS_ANYXML, 0, "ref", 1);
+    CHECK_LYSP_WHEN(parsed->when, "when-cond", NULL, 0, NULL);
+    assert_string_equal(parsed->iffeatures[0].str, "feature");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(parsed->exts[0]), LY_STMT_ANYXML);
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+
+    /* anydata max subelems */
+    data = ELEMENT_WRAPPER_START
+            "<anydata name=\"any-name\">\n"
+            "    <config value=\"true\" />\n"
+            "    <description><text>desc</text></description>\n"
+            "    <if-feature name=\"feature\" />\n"
+            "    <mandatory value=\"true\" />\n"
+            "    <must condition=\"must-cond\" />\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"deprecated\"/>\n"
+            "    <when condition=\"when-cond\"/>\n"
+            EXT_SUBELEM
+            "</anydata>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_anydata *)siblings;
+    flags = LYS_CONFIG_W | LYS_MAND_TRUE | LYS_STATUS_DEPRC;
+    CHECK_LYSP_NODE(parsed, "desc", 1, flags, 1,
+            "any-name", 0, LYS_ANYDATA, 0, "ref", 1);
+    CHECK_LYSP_WHEN(parsed->when, "when-cond", NULL, 0, NULL);
+    assert_string_equal(parsed->iffeatures[0].str, "feature");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(parsed->exts[0]), LY_STMT_ANYDATA);
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+
+    /* min subelems */
+    node_meta.parent = (void *)0x10;
+    data = ELEMENT_WRAPPER_START "<anydata name=\"any-name\"> </anydata>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_anydata *)siblings;
+    assert_ptr_equal(parsed->parent, node_meta.parent);
+    CHECK_LYSP_NODE(parsed, NULL, 0, 0, 0,
+            "any-name", 0, LYS_ANYDATA, 1, NULL, 0);
+    lysp_node_free(&fctx, siblings);
+}
+
+static void
+test_leaf_elem(void **state)
+{
+    const char *data;
+    struct lysp_node *siblings = NULL;
+    struct tree_node_meta node_meta = {.parent = NULL, .nodes = &siblings};
+    struct lysp_node_leaf *parsed = NULL;
+    uint16_t flags;
+
+    /* max elements */
+    data = ELEMENT_WRAPPER_START
+            "<leaf name=\"leaf\">\n"
+            "    <config value=\"true\" />\n"
+            "    <default value=\"def-val\"/>\n"
+            "    <description><text>desc</text></description>\n"
+            "    <if-feature name=\"feature\" />\n"
+            "    <mandatory value=\"true\" />\n"
+            "    <must condition=\"must-cond\" />\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"deprecated\"/>\n"
+            "    <type name=\"type\"/>\n"
+            "    <units name=\"uni\"/>\n"
+            "    <when condition=\"when-cond\"/>\n"
+            EXT_SUBELEM
+            "</leaf>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_leaf *)siblings;
+    flags = LYS_CONFIG_W | LYS_MAND_TRUE | LYS_STATUS_DEPRC;
+    CHECK_LYSP_NODE(parsed, "desc", 1, flags, 1,
+            "leaf", 0, LYS_LEAF, 0, "ref", 1);
+    CHECK_LYSP_WHEN(parsed->when, "when-cond", NULL, 0, NULL);
+    assert_string_equal(parsed->iffeatures[0].str, "feature");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(parsed->exts[0]), LY_STMT_LEAF);
+    assert_string_equal(parsed->musts->arg.str, "must-cond");
+    assert_string_equal(parsed->type.name, "type");
+    assert_string_equal(parsed->units, "uni");
+    assert_string_equal(parsed->dflt.str, "def-val");
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+
+    /* min elements */
+    data = ELEMENT_WRAPPER_START "<leaf name=\"leaf\"> <type name=\"type\"/> </leaf>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_leaf *)siblings;
+    assert_string_equal(parsed->name, "leaf");
+    assert_string_equal(parsed->type.name, "type");
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+}
+
+static void
+test_leaf_list_elem(void **state)
+{
+    const char *data;
+    struct lysp_node *siblings = NULL;
+    struct tree_node_meta node_meta = {.parent = NULL, .nodes = &siblings};
+    struct lysp_node_leaflist *parsed = NULL;
+    uint16_t flags;
+
+    data = ELEMENT_WRAPPER_START
+            "<leaf-list name=\"llist\">\n"
+            "    <config value=\"true\" />\n"
+            "    <default value=\"def-val0\"/>\n"
+            "    <default value=\"def-val1\"/>\n"
+            "    <description><text>desc</text></description>\n"
+            "    <if-feature name=\"feature\"/>\n"
+            "    <max-elements value=\"5\"/>\n"
+            "    <must condition=\"must-cond\"/>\n"
+            "    <ordered-by value=\"user\" />\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"current\"/>\n"
+            "    <type name=\"type\"/>\n"
+            "    <units name=\"uni\"/>\n"
+            "    <when condition=\"when-cond\"/>\n"
+            EXT_SUBELEM
+            "</leaf-list>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_leaflist *)siblings;
+    flags = LYS_CONFIG_W | LYS_ORDBY_USER | LYS_STATUS_CURR | LYS_SET_MAX;
+    CHECK_LYSP_NODE(parsed, "desc", 1, flags, 1,
+            "llist", 0, LYS_LEAFLIST, 0, "ref", 1);
+    CHECK_LYSP_RESTR(parsed->musts, "must-cond", NULL, NULL, NULL, 0, NULL);
+    assert_string_equal(parsed->dflts[0].str, "def-val0");
+    assert_string_equal(parsed->dflts[1].str, "def-val1");
+    assert_string_equal(parsed->iffeatures[0].str, "feature");
+    assert_int_equal(parsed->max, 5);
+    assert_string_equal(parsed->type.name, "type");
+    assert_string_equal(parsed->units, "uni");
+    CHECK_LYSP_WHEN(parsed->when, "when-cond", NULL, 0, NULL);
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(parsed->exts[0]), LY_STMT_LEAF_LIST);
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+
+    data = ELEMENT_WRAPPER_START
+            "<leaf-list name=\"llist\">\n"
+            "    <config value=\"true\" />\n"
+            "    <description><text>desc</text></description>\n"
+            "    <if-feature name=\"feature\"/>\n"
+            "    <min-elements value=\"5\"/>\n"
+            "    <must condition=\"must-cond\"/>\n"
+            "    <ordered-by value=\"user\" />\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"current\"/>\n"
+            "    <type name=\"type\"/>\n"
+            "    <units name=\"uni\"/>\n"
+            "    <when condition=\"when-cond\"/>\n"
+            EXT_SUBELEM
+            "</leaf-list>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_leaflist *)siblings;
+    flags = LYS_CONFIG_W | LYS_ORDBY_USER | LYS_STATUS_CURR | LYS_SET_MIN;
+    CHECK_LYSP_NODE(parsed, "desc", 1, flags, 1,
+            "llist", 0, LYS_LEAFLIST, 0, "ref", 1);
+    CHECK_LYSP_RESTR(parsed->musts, "must-cond", NULL, NULL, NULL, 0, NULL);
+    CHECK_LYSP_WHEN(parsed->when, "when-cond", NULL, 0, NULL);
+    assert_string_equal(parsed->iffeatures[0].str, "feature");
+    assert_int_equal(parsed->min, 5);
+    assert_string_equal(parsed->type.name, "type");
+    assert_string_equal(parsed->units, "uni");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(parsed->exts[0]), LY_STMT_LEAF_LIST);
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+
+    data = ELEMENT_WRAPPER_START
+            "<leaf-list name=\"llist\">\n"
+            "    <config value=\"true\" />\n"
+            "    <description><text>desc</text></description>\n"
+            "    <if-feature name=\"feature\"/>\n"
+            "    <max-elements value=\"15\"/>\n"
+            "    <min-elements value=\"5\"/>\n"
+            "    <must condition=\"must-cond\"/>\n"
+            "    <ordered-by value=\"user\" />\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"current\"/>\n"
+            "    <type name=\"type\"/>\n"
+            "    <units name=\"uni\"/>\n"
+            "    <when condition=\"when-cond\"/>\n"
+            "</leaf-list>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_leaflist *)siblings;
+    flags = LYS_CONFIG_W | LYS_ORDBY_USER | LYS_STATUS_CURR | LYS_SET_MIN | LYS_SET_MAX;
+    CHECK_LYSP_NODE(parsed, "desc", 0, flags, 1,
+            "llist", 0, LYS_LEAFLIST, 0, "ref", 1);
+    CHECK_LYSP_RESTR(parsed->musts, "must-cond", NULL, NULL, NULL, 0, NULL);
+    CHECK_LYSP_WHEN(parsed->when, "when-cond", NULL, 0, NULL);
+    assert_string_equal(parsed->iffeatures[0].str, "feature");
+    assert_int_equal(parsed->min, 5);
+    assert_int_equal(parsed->max, 15);
+    assert_string_equal(parsed->type.name, "type");
+    assert_string_equal(parsed->units, "uni");
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+
+    data = ELEMENT_WRAPPER_START
+            "<leaf-list name=\"llist\">\n"
+            "    <type name=\"type\"/>\n"
+            "</leaf-list>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_leaflist *)siblings;
+    assert_string_equal(parsed->name, "llist");
+    assert_string_equal(parsed->type.name, "type");
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+
+    /* invalid combinations */
+    data = ELEMENT_WRAPPER_START
+            "<leaf-list name=\"llist\">\n"
+            "    <max-elements value=\"5\"/>\n"
+            "    <min-elements value=\"15\"/>\n"
+            "    <type name=\"type\"/>"
+            "</leaf-list>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid combination of min-elements and max-elements: min value 15 is bigger than the max value 5.", "Line number 4.");
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+
+    data = ELEMENT_WRAPPER_START
+            "<leaf-list name=\"llist\">\n"
+            "    <default value=\"def-val1\"/>\n"
+            "    <min-elements value=\"15\"/>\n"
+            "    <type name=\"type\"/>\n"
+            "</leaf-list>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid combination of sub-elemnts \"min-elements\" and \"default\" in \"leaf-list\" element.", "Line number 5.");
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+
+    data = ELEMENT_WRAPPER_START
+            "<leaf-list name=\"llist\">"
+            "</leaf-list>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Missing mandatory sub-element \"type\" of \"leaf-list\" element.", "Line number 1.");
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+}
+
+static void
+test_presence_elem(void **state)
+{
+    const char *data;
+    const char *val;
+
+    data = ELEMENT_WRAPPER_START "<presence value=\"presence-val\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &val, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(val, "presence-val");
+    lydict_remove(UTEST_LYCTX, val);
+
+    data = ELEMENT_WRAPPER_START "<presence/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &val, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Missing mandatory attribute value of presence element.", "Line number 1.");
+}
+
+static void
+test_key_elem(void **state)
+{
+    const char *data;
+    const char *val;
+
+    data = ELEMENT_WRAPPER_START "<key value=\"key-value\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &val, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(val, "key-value");
+    lydict_remove(UTEST_LYCTX, val);
+
+    data = ELEMENT_WRAPPER_START "<key/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &val, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Missing mandatory attribute value of key element.", "Line number 1.");
+}
+
+static void
+test_uses_elem(void **state)
+{
+    const char *data;
+    struct lysp_node *siblings = NULL;
+    struct tree_node_meta node_meta = {NULL, &siblings};
+    struct lysp_node_uses *parsed = NULL;
+
+    /* max subelems */
+    data = ELEMENT_WRAPPER_START
+            "<uses name=\"uses-name\">\n"
+            "    <when condition=\"cond\" />\n"
+            "    <if-feature name=\"feature\" />\n"
+            "    <status value=\"obsolete\" />\n"
+            "    <description><text>desc</text></description>\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <refine target-node=\"target\"/>\n"
+            "    <augment target-node=\"target\" />\n"
+            EXT_SUBELEM
+            "</uses>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_uses *)&siblings[0];
+    CHECK_LYSP_NODE(parsed, "desc", 1, LYS_STATUS_OBSLT, 1,
+            "uses-name", 0, LYS_USES, 0, "ref", 1);
+    CHECK_LYSP_WHEN(parsed->when, "cond", NULL, 0, NULL);
+    assert_string_equal(parsed->iffeatures[0].str, "feature");
+    assert_string_equal(parsed->refines->nodeid, "target");
+    assert_string_equal(parsed->augments->nodeid, "target");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(parsed->exts[0]), LY_STMT_USES);
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START "<uses name=\"uses-name\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(siblings[0].name, "uses-name");
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+}
+
+static void
+test_list_elem(void **state)
+{
+    const char *data;
+    struct lysp_node *siblings = NULL;
+    struct tree_node_meta node_meta = {NULL, &siblings};
+    struct lysp_node_list *parsed = NULL;
+
+    /* max subelems */
+    data = ELEMENT_WRAPPER_START
+            "<list name=\"list-name\">\n"
+            "    <when condition=\"when\"/>\n"
+            "    <if-feature name=\"iff\"/>\n"
+            "    <must condition=\"must-cond\"/>\n"
+            "    <key value=\"key\"/>\n"
+            "    <unique tag=\"utag\"/>\n"
+            "    <config value=\"true\"/>\n"
+            "    <min-elements value=\"10\"/>\n"
+            "    <ordered-by value=\"user\"/>\n"
+            "    <status value=\"deprecated\"/>\n"
+            "    <description><text>desc</text></description>\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <anydata name=\"anyd\"/>\n"
+            "    <anyxml name=\"anyx\"/>\n"
+            "    <container name=\"cont\"/>\n"
+            "    <choice name=\"choice\"/>\n"
+            "    <action name=\"action\"/>\n"
+            "    <grouping name=\"grp\"/>\n"
+            "    <notification name=\"notf\"/>\n"
+            "    <leaf name=\"leaf\"> <type name=\"type\"/> </leaf>\n"
+            "    <leaf-list name=\"llist\"> <type name=\"type\"/> </leaf-list>\n"
+            "    <list name=\"sub-list\"/>\n"
+            "    <typedef name=\"tpdf\"> <type name=\"type\"/> </typedef>\n"
+            "    <uses name=\"uses-name\"/>\n"
+            EXT_SUBELEM
+            "</list>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_list *)&siblings[0];
+    assert_string_equal(parsed->child->name, "anyd");
+    assert_int_equal(parsed->child->nodetype, LYS_ANYDATA);
+    assert_string_equal(parsed->child->next->name, "anyx");
+    assert_int_equal(parsed->child->next->nodetype, LYS_ANYXML);
+    assert_string_equal(parsed->child->next->next->name, "cont");
+    assert_int_equal(parsed->child->next->next->nodetype, LYS_CONTAINER);
+    assert_string_equal(parsed->child->next->next->next->name, "choice");
+    assert_int_equal(parsed->child->next->next->next->nodetype, LYS_CHOICE);
+    assert_string_equal(parsed->child->next->next->next->next->name, "leaf");
+    assert_int_equal(parsed->child->next->next->next->next->nodetype, LYS_LEAF);
+    assert_string_equal(parsed->child->next->next->next->next->next->name, "llist");
+    assert_int_equal(parsed->child->next->next->next->next->next->nodetype, LYS_LEAFLIST);
+    assert_string_equal(parsed->child->next->next->next->next->next->next->name, "sub-list");
+    assert_int_equal(parsed->child->next->next->next->next->next->next->nodetype, LYS_LIST);
+    assert_string_equal(parsed->child->next->next->next->next->next->next->next->name, "uses-name");
+    assert_int_equal(parsed->child->next->next->next->next->next->next->next->nodetype, LYS_USES);
+    assert_null(parsed->child->next->next->next->next->next->next->next->next);
+    uint16_t flags = LYS_ORDBY_USER | LYS_STATUS_DEPRC | LYS_CONFIG_W | LYS_SET_MIN;
+
+    CHECK_LYSP_NODE(parsed, "desc", 1, flags, 1,
+            "list-name", 0, LYS_LIST, 0, "ref", 1);
+    CHECK_LYSP_RESTR(parsed->musts, "must-cond", NULL, NULL, NULL, 0, NULL);
+    CHECK_LYSP_WHEN(parsed->when, "when", NULL, 0, NULL);
+    assert_string_equal(parsed->groupings->name, "grp");
+    assert_string_equal(parsed->actions->name, "action");
+    assert_int_equal(parsed->groupings->nodetype, LYS_GROUPING);
+    assert_string_equal(parsed->notifs->name, "notf");
+    assert_string_equal(parsed->iffeatures[0].str, "iff");
+    assert_string_equal(parsed->key, "key");
+    assert_int_equal(parsed->min, 10);
+    assert_string_equal(parsed->typedefs->name, "tpdf");
+    assert_string_equal(parsed->uniques->str, "utag");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(parsed->exts[0]), LY_STMT_LIST);
+    lysp_node_free(&fctx, siblings);
+    ly_set_erase(&YCTX->tpdfs_nodes, NULL);
+    siblings = NULL;
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START "<list name=\"list-name\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_list *)&siblings[0];
+    CHECK_LYSP_NODE(parsed, NULL, 0, 0, 0,
+            "list-name", 0, LYS_LIST, 0, NULL, 0);
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+}
+
+static void
+test_notification_elem(void **state)
+{
+    const char *data;
+    struct lysp_node_notif *notifs = NULL;
+    struct tree_node_meta notif_meta = {NULL, (struct lysp_node **)&notifs};
+
+    /* max subelems */
+    PARSER_CUR_PMOD(YCTX)->version = LYS_VERSION_1_1;
+    data = ELEMENT_WRAPPER_START
+            "<notification name=\"notif-name\">\n"
+            "    <anydata name=\"anyd\"/>\n"
+            "    <anyxml name=\"anyx\"/>\n"
+            "    <description><text>desc</text></description>\n"
+            "    <if-feature name=\"iff\"/>\n"
+            "    <leaf name=\"leaf\"> <type name=\"type\"/> </leaf>\n"
+            "    <leaf-list name=\"llist\"> <type name=\"type\"/> </leaf-list>\n"
+            "    <list name=\"sub-list\"/>\n"
+            "    <must condition=\"cond\"/>\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"deprecated\"/>\n"
+            "    <typedef name=\"tpdf\"> <type name=\"type\"/> </typedef>\n"
+            "    <uses name=\"uses-name\"/>\n"
+            "    <container name=\"cont\"/>\n"
+            "    <choice name=\"choice\"/>\n"
+            "    <grouping name=\"grp\"/>\n"
+            EXT_SUBELEM
+            "</notification>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &notif_meta, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(notifs->name, "notif-name");
+    assert_string_equal(notifs->child->name, "anyd");
+    assert_int_equal(notifs->child->nodetype, LYS_ANYDATA);
+    assert_string_equal(notifs->child->next->name, "anyx");
+    assert_int_equal(notifs->child->next->nodetype, LYS_ANYXML);
+    assert_string_equal(notifs->child->next->next->name, "leaf");
+    assert_int_equal(notifs->child->next->next->nodetype, LYS_LEAF);
+    assert_string_equal(notifs->child->next->next->next->name, "llist");
+    assert_int_equal(notifs->child->next->next->next->nodetype, LYS_LEAFLIST);
+    assert_string_equal(notifs->child->next->next->next->next->name, "sub-list");
+    assert_int_equal(notifs->child->next->next->next->next->nodetype, LYS_LIST);
+    assert_true(notifs->flags & LYS_STATUS_DEPRC);
+    assert_string_equal(notifs->groupings->name, "grp");
+    assert_int_equal(notifs->groupings->nodetype, LYS_GROUPING);
+    assert_string_equal(notifs->child->next->next->next->next->next->name, "uses-name");
+    assert_int_equal(notifs->child->next->next->next->next->next->nodetype, LYS_USES);
+    assert_string_equal(notifs->child->next->next->next->next->next->next->name, "cont");
+    assert_int_equal(notifs->child->next->next->next->next->next->next->nodetype, LYS_CONTAINER);
+    assert_int_equal(notifs->child->next->next->next->next->next->next->next->nodetype, LYS_CHOICE);
+    assert_string_equal(notifs->child->next->next->next->next->next->next->next->name, "choice");
+    assert_null(notifs->child->next->next->next->next->next->next->next->next);
+    assert_string_equal(notifs->iffeatures[0].str, "iff");
+    assert_string_equal(notifs->musts->arg.str, "cond");
+    assert_int_equal(notifs->nodetype, LYS_NOTIF);
+    assert_null(notifs->parent);
+    assert_string_equal(notifs->ref, "ref");
+    assert_string_equal(notifs->typedefs->name, "tpdf");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(notifs->exts[0]), LY_STMT_NOTIFICATION);
+    lysp_node_free(&fctx, (struct lysp_node *)notifs);
+    notifs = NULL;
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START "<notification name=\"notif-name\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &notif_meta, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(notifs->name, "notif-name");
+    lysp_node_free(&fctx, (struct lysp_node *)notifs);
+    notifs = NULL;
+}
+
+static void
+test_grouping_elem(void **state)
+{
+    const char *data;
+    struct lysp_node_grp *grps = NULL;
+    struct tree_node_meta grp_meta = {NULL, (struct lysp_node **)&grps};
+
+    /* max subelems */
+    data = ELEMENT_WRAPPER_START
+            "<grouping name=\"grp-name\">\n"
+            "    <anydata name=\"anyd\"/>\n"
+            "    <anyxml name=\"anyx\"/>\n"
+            "    <description><text>desc</text></description>\n"
+            "    <grouping name=\"sub-grp\"/>\n"
+            "    <leaf name=\"leaf\"> <type name=\"type\"/> </leaf>\n"
+            "    <leaf-list name=\"llist\"> <type name=\"type\"/> </leaf-list>\n"
+            "    <list name=\"list\"/>\n"
+            "    <notification name=\"notf\"/>\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"current\"/>\n"
+            "    <typedef name=\"tpdf\"> <type name=\"type\"/> </typedef>\n"
+            "    <uses name=\"uses-name\"/>\n"
+            "    <action name=\"act\"/>\n"
+            "    <container name=\"cont\"/>\n"
+            "    <choice name=\"choice\"/>\n"
+            EXT_SUBELEM
+            "</grouping>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &grp_meta, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(grps->name, "grp-name");
+    assert_string_equal(grps->child->name, "anyd");
+    assert_string_equal(grps->child->next->name, "anyx");
+    assert_string_equal(grps->child->next->next->name, "leaf");
+    assert_string_equal(grps->child->next->next->next->name, "llist");
+    assert_string_equal(grps->child->next->next->next->next->name, "list");
+    assert_string_equal(grps->dsc, "desc");
+    assert_true(grps->flags & LYS_STATUS_CURR);
+    assert_string_equal(grps->groupings->name, "sub-grp");
+    assert_int_equal(grps->nodetype, LYS_GROUPING);
+    assert_string_equal(grps->notifs->name, "notf");
+    assert_null(grps->parent);
+    assert_string_equal(grps->ref, "ref");
+    assert_string_equal(grps->typedefs->name, "tpdf");
+    assert_string_equal(grps->actions->name, "act");
+    assert_string_equal(grps->child->next->next->next->next->next->name, "uses-name");
+    assert_int_equal(grps->child->next->next->next->next->next->nodetype, LYS_USES);
+    assert_string_equal(grps->child->next->next->next->next->next->next->name, "cont");
+    assert_int_equal(grps->child->next->next->next->next->next->next->nodetype, LYS_CONTAINER);
+    assert_string_equal(grps->child->next->next->next->next->next->next->next->name, "choice");
+    assert_int_equal(grps->child->next->next->next->next->next->next->next->nodetype, LYS_CHOICE);
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(grps->exts[0]), LY_STMT_GROUPING);
+    lysp_node_free(&fctx, &grps->node);
+    grps = NULL;
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START "<grouping name=\"grp-name\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &grp_meta, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(grps->name, "grp-name");
+    lysp_node_free(&fctx, &grps->node);
+    grps = NULL;
+}
+
+static void
+test_container_elem(void **state)
+{
+    const char *data;
+    struct lysp_node *siblings = NULL;
+    struct tree_node_meta node_meta = {NULL, &siblings};
+    struct lysp_node_container *parsed = NULL;
+
+    /* max subelems */
+    PARSER_CUR_PMOD(YCTX)->version = LYS_VERSION_1_1;
+    data = ELEMENT_WRAPPER_START
+            "<container name=\"cont-name\">\n"
+            "    <anydata name=\"anyd\"/>\n"
+            "    <anyxml name=\"anyx\"/>\n"
+            "    <config value=\"true\"/>\n"
+            "    <container name=\"subcont\"/>\n"
+            "    <description><text>desc</text></description>\n"
+            "    <grouping name=\"sub-grp\"/>\n"
+            "    <if-feature name=\"iff\"/>\n"
+            "    <leaf name=\"leaf\"> <type name=\"type\"/> </leaf>\n"
+            "    <leaf-list name=\"llist\"> <type name=\"type\"/> </leaf-list>\n"
+            "    <list name=\"list\"/>\n"
+            "    <must condition=\"cond\"/>\n"
+            "    <notification name=\"notf\"/>\n"
+            "    <presence value=\"presence\"/>\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"current\"/>\n"
+            "    <typedef name=\"tpdf\"> <type name=\"type\"/> </typedef>\n"
+            "    <uses name=\"uses-name\"/>\n"
+            "    <when condition=\"when-cond\"/>\n"
+            "    <action name=\"act\"/>\n"
+            "    <choice name=\"choice\"/>\n"
+            EXT_SUBELEM
+            "</container>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_container *)siblings;
+    uint16_t flags = LYS_CONFIG_W | LYS_STATUS_CURR;
+
+    CHECK_LYSP_NODE(parsed, "desc", 1, flags, 1,
+            "cont-name", 0, LYS_CONTAINER, 0, "ref", 1);
+    CHECK_LYSP_RESTR(parsed->musts, "cond", NULL, NULL, NULL, 0, NULL);
+    CHECK_LYSP_WHEN(parsed->when, "when-cond", NULL, 0, NULL);
+
+    assert_string_equal(parsed->iffeatures[0].str, "iff");
+    assert_string_equal(parsed->presence, "presence");
+    assert_string_equal(parsed->typedefs->name, "tpdf");
+    assert_string_equal(parsed->groupings->name, "sub-grp");
+    assert_string_equal(parsed->child->name, "anyd");
+    assert_int_equal(parsed->child->nodetype, LYS_ANYDATA);
+    assert_string_equal(parsed->child->next->name, "anyx");
+    assert_int_equal(parsed->child->next->nodetype, LYS_ANYXML);
+    assert_string_equal(parsed->child->next->next->name, "subcont");
+    assert_int_equal(parsed->child->next->next->nodetype, LYS_CONTAINER);
+    assert_string_equal(parsed->child->next->next->next->name, "leaf");
+    assert_int_equal(parsed->child->next->next->next->nodetype, LYS_LEAF);
+    assert_string_equal(parsed->child->next->next->next->next->name, "llist");
+    assert_int_equal(parsed->child->next->next->next->next->nodetype, LYS_LEAFLIST);
+    assert_string_equal(parsed->child->next->next->next->next->next->name, "list");
+    assert_int_equal(parsed->child->next->next->next->next->next->nodetype, LYS_LIST);
+    assert_string_equal(parsed->child->next->next->next->next->next->next->name, "uses-name");
+    assert_int_equal(parsed->child->next->next->next->next->next->next->nodetype, LYS_USES);
+    assert_string_equal(parsed->child->next->next->next->next->next->next->next->name, "choice");
+    assert_int_equal(parsed->child->next->next->next->next->next->next->next->nodetype, LYS_CHOICE);
+    assert_null(parsed->child->next->next->next->next->next->next->next->next);
+    assert_string_equal(parsed->notifs->name, "notf");
+    assert_string_equal(parsed->actions->name, "act");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(parsed->exts[0]), LY_STMT_CONTAINER);
+    lysp_node_free(&fctx, siblings);
+    ly_set_erase(&YCTX->tpdfs_nodes, NULL);
+    siblings = NULL;
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START "<container name=\"cont-name\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_container *)siblings;
+    CHECK_LYSP_NODE(parsed, NULL, 0, 0, 0,
+            "cont-name", 0, LYS_CONTAINER, 0, NULL, 0);
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+}
+
+static void
+test_case_elem(void **state)
+{
+    const char *data;
+    struct lysp_node *siblings = NULL;
+    struct tree_node_meta node_meta = {NULL, &siblings};
+    struct lysp_node_case *parsed = NULL;
+
+    /* max subelems */
+    PARSER_CUR_PMOD(YCTX)->version = LYS_VERSION_1_1;
+    data = ELEMENT_WRAPPER_START
+            "<case name=\"case-name\">\n"
+            "    <anydata name=\"anyd\"/>\n"
+            "    <anyxml name=\"anyx\"/>\n"
+            "    <container name=\"subcont\"/>\n"
+            "    <description><text>desc</text></description>\n"
+            "    <if-feature name=\"iff\"/>\n"
+            "    <leaf name=\"leaf\"> <type name=\"type\"/> </leaf>\n"
+            "    <leaf-list name=\"llist\"> <type name=\"type\"/> </leaf-list>\n"
+            "    <list name=\"list\"/>\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"current\"/>\n"
+            "    <uses name=\"uses-name\"/>\n"
+            "    <when condition=\"when-cond\"/>\n"
+            "    <choice name=\"choice\"/>\n"
+            EXT_SUBELEM
+            "</case>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_case *)siblings;
+    uint16_t flags = LYS_STATUS_CURR;
+
+    CHECK_LYSP_NODE(parsed, "desc", 1, flags, 1,
+            "case-name", 0, LYS_CASE, 0, "ref", 1);
+    CHECK_LYSP_WHEN(parsed->when, "when-cond", NULL, 0, NULL);
+    assert_string_equal(parsed->iffeatures[0].str, "iff");
+    assert_string_equal(parsed->child->name, "anyd");
+    assert_int_equal(parsed->child->nodetype, LYS_ANYDATA);
+    assert_string_equal(parsed->child->next->name, "anyx");
+    assert_int_equal(parsed->child->next->nodetype, LYS_ANYXML);
+    assert_string_equal(parsed->child->next->next->name, "subcont");
+    assert_int_equal(parsed->child->next->next->nodetype, LYS_CONTAINER);
+    assert_string_equal(parsed->child->next->next->next->name, "leaf");
+    assert_int_equal(parsed->child->next->next->next->nodetype, LYS_LEAF);
+    assert_string_equal(parsed->child->next->next->next->next->name, "llist");
+    assert_int_equal(parsed->child->next->next->next->next->nodetype, LYS_LEAFLIST);
+    assert_string_equal(parsed->child->next->next->next->next->next->name, "list");
+    assert_int_equal(parsed->child->next->next->next->next->next->nodetype, LYS_LIST);
+    assert_string_equal(parsed->child->next->next->next->next->next->next->name, "uses-name");
+    assert_int_equal(parsed->child->next->next->next->next->next->next->nodetype, LYS_USES);
+    assert_string_equal(parsed->child->next->next->next->next->next->next->next->name, "choice");
+    assert_int_equal(parsed->child->next->next->next->next->next->next->next->nodetype, LYS_CHOICE);
+    assert_null(parsed->child->next->next->next->next->next->next->next->next);
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(parsed->exts[0]), LY_STMT_CASE);
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START "<case name=\"case-name\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_case *)siblings;
+    CHECK_LYSP_NODE(parsed, NULL, 0, 0, 0,
+            "case-name", 0, LYS_CASE, 0, NULL, 0);
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+}
+
+static void
+test_choice_elem(void **state)
+{
+    const char *data;
+    struct lysp_node *siblings = NULL;
+    struct tree_node_meta node_meta = {NULL, &siblings};
+    struct lysp_node_choice *parsed = NULL;
+
+    /* max subelems */
+    PARSER_CUR_PMOD(YCTX)->version = LYS_VERSION_1_1;
+    data = ELEMENT_WRAPPER_START
+            "<choice name=\"choice-name\">\n"
+            "    <anydata name=\"anyd\"/>\n"
+            "    <anyxml name=\"anyx\"/>\n"
+            "    <case name=\"sub-case\"/>\n"
+            "    <choice name=\"choice\"/>\n"
+            "    <config value=\"true\"/>\n"
+            "    <container name=\"subcont\"/>\n"
+            "    <default value=\"def\"/>\n"
+            "    <description><text>desc</text></description>\n"
+            "    <if-feature name=\"iff\"/>\n"
+            "    <leaf name=\"leaf\"> <type name=\"type\"/> </leaf>\n"
+            "    <leaf-list name=\"llist\"> <type name=\"type\"/> </leaf-list>\n"
+            "    <list name=\"list\"/>\n"
+            "    <mandatory value=\"true\" />\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"current\"/>\n"
+            "    <when condition=\"when-cond\"/>\n"
+            EXT_SUBELEM
+            "</choice>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_choice *)siblings;
+    uint16_t flags = LYS_CONFIG_W | LYS_MAND_TRUE | LYS_STATUS_CURR;
+
+    CHECK_LYSP_NODE(parsed, "desc", 1, flags, 1,
+            "choice-name", 0, LYS_CHOICE, 0, "ref", 1);
+    CHECK_LYSP_WHEN(parsed->when, "when-cond", NULL, 0, NULL);
+    assert_string_equal(parsed->iffeatures[0].str, "iff");
+    assert_string_equal(parsed->child->name, "anyd");
+    assert_int_equal(parsed->child->nodetype, LYS_ANYDATA);
+    assert_string_equal(parsed->child->next->name, "anyx");
+    assert_int_equal(parsed->child->next->nodetype, LYS_ANYXML);
+    assert_string_equal(parsed->child->next->next->name, "sub-case");
+    assert_int_equal(parsed->child->next->next->nodetype, LYS_CASE);
+    assert_string_equal(parsed->child->next->next->next->name, "choice");
+    assert_int_equal(parsed->child->next->next->next->nodetype, LYS_CHOICE);
+    assert_string_equal(parsed->child->next->next->next->next->name, "subcont");
+    assert_int_equal(parsed->child->next->next->next->next->nodetype, LYS_CONTAINER);
+    assert_string_equal(parsed->child->next->next->next->next->next->name, "leaf");
+    assert_int_equal(parsed->child->next->next->next->next->next->nodetype, LYS_LEAF);
+    assert_string_equal(parsed->child->next->next->next->next->next->next->name, "llist");
+    assert_int_equal(parsed->child->next->next->next->next->next->next->nodetype, LYS_LEAFLIST);
+    assert_string_equal(parsed->child->next->next->next->next->next->next->next->name, "list");
+    assert_int_equal(parsed->child->next->next->next->next->next->next->next->nodetype, LYS_LIST);
+    assert_null(parsed->child->next->next->next->next->next->next->next->next);
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(parsed->exts[0]), LY_STMT_CHOICE);
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START "<choice name=\"choice-name\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &node_meta, NULL, NULL), LY_SUCCESS);
+    parsed = (struct lysp_node_choice *)siblings;
+    assert_string_equal(parsed->name, "choice-name");
+    CHECK_LYSP_NODE(parsed, NULL, 0, 0, 0,
+            "choice-name", 0, LYS_CHOICE, 0, NULL, 0);
+    lysp_node_free(&fctx, siblings);
+    siblings = NULL;
+}
+
+static void
+test_inout_elem(void **state)
+{
+    const char *data;
+    struct lysp_node_action_inout inout = {0};
+    struct inout_meta inout_meta = {NULL, &inout};
+
+    /* max subelements */
+    PARSER_CUR_PMOD(YCTX)->version = LYS_VERSION_1_1;
+    data = ELEMENT_WRAPPER_START
+            "<input>\n"
+            "    <anydata name=\"anyd\"/>\n"
+            "    <anyxml name=\"anyx\"/>\n"
+            "    <choice name=\"choice\"/>\n"
+            "    <container name=\"subcont\"/>\n"
+            "    <grouping name=\"sub-grp\"/>\n"
+            "    <leaf name=\"leaf\"> <type name=\"type\"/> </leaf>\n"
+            "    <leaf-list name=\"llist\"> <type name=\"type\"/> </leaf-list>\n"
+            "    <list name=\"list\"/>\n"
+            "    <must condition=\"cond\"/>\n"
+            "    <typedef name=\"tpdf\"> <type name=\"type\"/> </typedef>\n"
+            "    <uses name=\"uses-name\"/>\n"
+            EXT_SUBELEM
+            "</input>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &inout_meta, NULL, NULL), LY_SUCCESS);
+    CHECK_LYSP_ACTION_INOUT(&(inout), 1, 1, 1, 1, LYS_INPUT, 0, 1);
+    CHECK_LYSP_RESTR(inout.musts, "cond", NULL, NULL, NULL, 0, NULL);
+    assert_string_equal(inout.typedefs->name, "tpdf");
+    assert_string_equal(inout.groupings->name, "sub-grp");
+    assert_string_equal(inout.child->name, "anyd");
+    assert_int_equal(inout.child->nodetype, LYS_ANYDATA);
+    assert_string_equal(inout.child->next->name, "anyx");
+    assert_int_equal(inout.child->next->nodetype, LYS_ANYXML);
+    assert_string_equal(inout.child->next->next->name, "choice");
+    assert_int_equal(inout.child->next->next->nodetype, LYS_CHOICE);
+    assert_string_equal(inout.child->next->next->next->name, "subcont");
+    assert_int_equal(inout.child->next->next->next->nodetype, LYS_CONTAINER);
+    assert_string_equal(inout.child->next->next->next->next->name, "leaf");
+    assert_int_equal(inout.child->next->next->next->next->nodetype, LYS_LEAF);
+    assert_string_equal(inout.child->next->next->next->next->next->name, "llist");
+    assert_int_equal(inout.child->next->next->next->next->next->nodetype, LYS_LEAFLIST);
+    assert_string_equal(inout.child->next->next->next->next->next->next->name, "list");
+    assert_int_equal(inout.child->next->next->next->next->next->next->nodetype, LYS_LIST);
+    assert_string_equal(inout.child->next->next->next->next->next->next->next->name, "uses-name");
+    assert_int_equal(inout.child->next->next->next->next->next->next->next->nodetype, LYS_USES);
+    assert_null(inout.child->next->next->next->next->next->next->next->next);
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(inout.exts[0]), LY_STMT_INPUT);
+    lysp_node_free(&fctx, (struct lysp_node *)&inout);
+    memset(&inout, 0, sizeof inout);
+
+    /* max subelements */
+    PARSER_CUR_PMOD(YCTX)->version = LYS_VERSION_1_1;
+    data = ELEMENT_WRAPPER_START
+            "<output>\n"
+            "    <anydata name=\"anyd\"/>\n"
+            "    <anyxml name=\"anyx\"/>\n"
+            "    <choice name=\"choice\"/>\n"
+            "    <container name=\"subcont\"/>\n"
+            "    <grouping name=\"sub-grp\"/>\n"
+            "    <leaf name=\"leaf\"> <type name=\"type\"/> </leaf>\n"
+            "    <leaf-list name=\"llist\"> <type name=\"type\"/> </leaf-list>\n"
+            "    <list name=\"list\"/>\n"
+            "    <must condition=\"cond\"/>\n"
+            "    <typedef name=\"tpdf\"> <type name=\"type\"/> </typedef>\n"
+            "    <uses name=\"uses-name\"/>\n"
+            EXT_SUBELEM
+            "</output>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &inout_meta, NULL, NULL), LY_SUCCESS);
+    CHECK_LYSP_ACTION_INOUT(&(inout), 1, 1, 1, 1, LYS_OUTPUT, 0, 1);
+    assert_string_equal(inout.musts->arg.str, "cond");
+    assert_string_equal(inout.typedefs->name, "tpdf");
+    assert_string_equal(inout.groupings->name, "sub-grp");
+    assert_string_equal(inout.child->name, "anyd");
+    assert_int_equal(inout.child->nodetype, LYS_ANYDATA);
+    assert_string_equal(inout.child->next->name, "anyx");
+    assert_int_equal(inout.child->next->nodetype, LYS_ANYXML);
+    assert_string_equal(inout.child->next->next->name, "choice");
+    assert_int_equal(inout.child->next->next->nodetype, LYS_CHOICE);
+    assert_string_equal(inout.child->next->next->next->name, "subcont");
+    assert_int_equal(inout.child->next->next->next->nodetype, LYS_CONTAINER);
+    assert_string_equal(inout.child->next->next->next->next->name, "leaf");
+    assert_int_equal(inout.child->next->next->next->next->nodetype, LYS_LEAF);
+    assert_string_equal(inout.child->next->next->next->next->next->name, "llist");
+    assert_int_equal(inout.child->next->next->next->next->next->nodetype, LYS_LEAFLIST);
+    assert_string_equal(inout.child->next->next->next->next->next->next->name, "list");
+    assert_int_equal(inout.child->next->next->next->next->next->next->nodetype, LYS_LIST);
+    assert_string_equal(inout.child->next->next->next->next->next->next->next->name, "uses-name");
+    assert_int_equal(inout.child->next->next->next->next->next->next->next->nodetype, LYS_USES);
+    assert_null(inout.child->next->next->next->next->next->next->next->next);
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(inout.exts[0]), LY_STMT_OUTPUT);
+    lysp_node_free(&fctx, (struct lysp_node *)&inout);
+    memset(&inout, 0, sizeof inout);
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START "<input><leaf name=\"l\"><type name=\"empty\"/></leaf></input>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &inout_meta, NULL, NULL), LY_SUCCESS);
+    lysp_node_free(&fctx, (struct lysp_node *)&inout);
+    memset(&inout, 0, sizeof inout);
+
+    data = ELEMENT_WRAPPER_START "<output><leaf name=\"l\"><type name=\"empty\"/></leaf></output>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &inout_meta, NULL, NULL), LY_SUCCESS);
+    lysp_node_free(&fctx, (struct lysp_node *)&inout);
+    memset(&inout, 0, sizeof inout);
+
+    /* invalid combinations */
+    data = ELEMENT_WRAPPER_START "<input name=\"test\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &inout_meta, NULL, NULL), LY_EVALID);
+    lysp_node_free(&fctx, (struct lysp_node *)&inout);
+    CHECK_LOG_CTX("Unexpected attribute \"name\" of \"input\" element.", "Line number 1.");
+    memset(&inout, 0, sizeof inout);
+}
+
+static void
+test_action_elem(void **state)
+{
+    const char *data;
+    struct lysp_node_action *actions = NULL;
+    struct tree_node_meta act_meta = {NULL, (struct lysp_node **)&actions};
+    uint16_t flags;
+
+    /* max subelems */
+    PARSER_CUR_PMOD(YCTX)->version = LYS_VERSION_1_1;
+    data = ELEMENT_WRAPPER_START
+            "<action name=\"act\">\n"
+            "    <description><text>desc</text></description>\n"
+            "    <grouping name=\"grouping\"/>\n"
+            "    <if-feature name=\"iff\"/>\n"
+            "    <input><uses name=\"uses-name\"/></input>\n"
+            "    <output><must condition=\"cond\"/><leaf name=\"l\"><type name=\"type\"/></leaf></output>\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"deprecated\"/>\n"
+            "    <typedef name=\"tpdf\"> <type name=\"type\"/> </typedef>\n"
+            EXT_SUBELEM
+            "</action>"
+            ELEMENT_WRAPPER_END;
+    /* there must be parent for action */
+    act_meta.parent = (void *)1;
+    assert_int_equal(test_element_helper(state, data, &act_meta, NULL, NULL), LY_SUCCESS);
+    act_meta.parent = NULL;
+    flags = LYS_STATUS_DEPRC;
+    CHECK_LYSP_ACTION(actions, "desc", 1, flags, 1, 1,\
+            1, 0, 0, 0,\
+            1, 0,\
+            "act", LYS_ACTION, \
+            1, 0, 0, 1,\
+            1, 0,\
+            1, "ref", 1);
+
+    assert_string_equal(actions->iffeatures[0].str, "iff");
+    assert_string_equal(actions->typedefs->name, "tpdf");
+    assert_string_equal(actions->groupings->name, "grouping");
+    assert_string_equal(actions->output.musts->arg.str, "cond");
+    assert_string_equal(actions->input.child->name, "uses-name");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(actions->exts[0]), LY_STMT_ACTION);
+    lysp_node_free(&fctx, (struct lysp_node *)actions);
+    actions = NULL;
+
+    PARSER_CUR_PMOD(YCTX)->version = LYS_VERSION_1_1;
+    data = ELEMENT_WRAPPER_START
+            "<rpc name=\"act\">\n"
+            "    <description><text>desc</text></description>\n"
+            "    <grouping name=\"grouping\"/>\n"
+            "    <if-feature name=\"iff\"/>\n"
+            "    <input><uses name=\"uses-name\"/></input>\n"
+            "    <output><must condition=\"cond\"/><leaf name=\"l\"><type name=\"type\"/></leaf></output>\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"deprecated\"/>\n"
+            "    <typedef name=\"tpdf\"> <type name=\"type\"/> </typedef>\n"
+            EXT_SUBELEM
+            "</rpc>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &act_meta, NULL, NULL), LY_SUCCESS);
+    flags = LYS_STATUS_DEPRC;
+    CHECK_LYSP_ACTION(actions, "desc", 1, flags, 1, 1,\
+            1, 0, 0, 0,\
+            1, 0,\
+            "act", LYS_RPC, \
+            1, 0, 0, 1,\
+            1, 0,\
+            0, "ref", 1);
+
+    assert_string_equal(actions->iffeatures[0].str, "iff");
+    assert_string_equal(actions->typedefs->name, "tpdf");
+    assert_string_equal(actions->groupings->name, "grouping");
+    assert_string_equal(actions->input.child->name, "uses-name");
+    assert_string_equal(actions->output.musts->arg.str, "cond");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(actions->exts[0]), LY_STMT_RPC);
+    lysp_node_free(&fctx, (struct lysp_node *)actions);
+    actions = NULL;
+
+    /* min subelems */
+    data = ELEMENT_WRAPPER_START "<action name=\"act\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &act_meta, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(actions->name, "act");
+    lysp_node_free(&fctx, (struct lysp_node *)actions);
+    actions = NULL;
+}
+
+static void
+test_augment_elem(void **state)
+{
+    const char *data;
+    struct lysp_node_augment *augments = NULL;
+    struct tree_node_meta aug_meta = {NULL, (struct lysp_node **)&augments};
+
+    PARSER_CUR_PMOD(YCTX)->version = LYS_VERSION_1_1;
+    data = ELEMENT_WRAPPER_START
+            "<augment target-node=\"target\">\n"
+            "    <action name=\"action\"/>\n"
+            "    <anydata name=\"anyd\"/>\n"
+            "    <anyxml name=\"anyx\"/>\n"
+            "    <case name=\"case\"/>\n"
+            "    <choice name=\"choice\"/>\n"
+            "    <container name=\"subcont\"/>\n"
+            "    <description><text>desc</text></description>\n"
+            "    <if-feature name=\"iff\"/>\n"
+            "    <leaf name=\"leaf\"> <type name=\"type\"/> </leaf>\n"
+            "    <leaf-list name=\"llist\"> <type name=\"type\"/> </leaf-list>\n"
+            "    <list name=\"list\"/>\n"
+            "    <notification name=\"notif\"/>\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <status value=\"current\"/>\n"
+            "    <uses name=\"uses\"/>\n"
+            "    <when condition=\"when-cond\"/>\n"
+            EXT_SUBELEM
+            "</augment>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &aug_meta, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(augments->nodeid, "target");
+    assert_null(augments->parent);
+    assert_int_equal(augments->nodetype, LYS_AUGMENT);
+    assert_true(augments->flags & LYS_STATUS_CURR);
+    assert_string_equal(augments->dsc, "desc");
+    assert_string_equal(augments->ref, "ref");
+    assert_string_equal(augments->when->cond, "when-cond");
+    assert_string_equal(augments->iffeatures[0].str, "iff");
+    assert_string_equal(augments->child->name, "anyd");
+    assert_int_equal(augments->child->nodetype, LYS_ANYDATA);
+    assert_string_equal(augments->child->next->name, "anyx");
+    assert_int_equal(augments->child->next->nodetype, LYS_ANYXML);
+    assert_string_equal(augments->child->next->next->name, "case");
+    assert_int_equal(augments->child->next->next->nodetype, LYS_CASE);
+    assert_string_equal(augments->child->next->next->next->name, "choice");
+    assert_int_equal(augments->child->next->next->next->nodetype, LYS_CHOICE);
+    assert_string_equal(augments->child->next->next->next->next->name, "subcont");
+    assert_int_equal(augments->child->next->next->next->next->nodetype, LYS_CONTAINER);
+    assert_string_equal(augments->child->next->next->next->next->next->name, "leaf");
+    assert_int_equal(augments->child->next->next->next->next->next->nodetype, LYS_LEAF);
+    assert_string_equal(augments->child->next->next->next->next->next->next->name, "llist");
+    assert_int_equal(augments->child->next->next->next->next->next->next->nodetype, LYS_LEAFLIST);
+    assert_string_equal(augments->child->next->next->next->next->next->next->next->name, "list");
+    assert_int_equal(augments->child->next->next->next->next->next->next->next->nodetype, LYS_LIST);
+    assert_string_equal(augments->child->next->next->next->next->next->next->next->next->name, "uses");
+    assert_int_equal(augments->child->next->next->next->next->next->next->next->next->nodetype, LYS_USES);
+    assert_null(augments->child->next->next->next->next->next->next->next->next->next);
+    assert_string_equal(augments->actions->name, "action");
+    assert_string_equal(augments->notifs->name, "notif");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(augments->exts[0]), LY_STMT_AUGMENT);
+    lysp_node_free(&fctx, (struct lysp_node *)augments);
+    augments = NULL;
+
+    data = ELEMENT_WRAPPER_START "<augment target-node=\"target\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &aug_meta, NULL, NULL), LY_SUCCESS);
+    assert_string_equal(augments->nodeid, "target");
+    lysp_node_free(&fctx, (struct lysp_node *)augments);
+    augments = NULL;
+}
+
+static void
+test_deviate_elem(void **state)
+{
+    const char *data;
+    struct lysp_deviate *deviates = NULL;
+
+    /* invalid arguments */
+    data = ELEMENT_WRAPPER_START "<deviate value=\"\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &deviates, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"\" of \"value\" attribute in \"deviate\" element. "
+            "Valid values are \"not-supported\", \"add\", \"replace\" and \"delete\".", "Line number 1.");
+    deviates = NULL;
+
+    data = ELEMENT_WRAPPER_START "<deviate value=\"invalid\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &deviates, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"invalid\" of \"value\" attribute in \"deviate\" element. "
+            "Valid values are \"not-supported\", \"add\", \"replace\" and \"delete\".", "Line number 1.");
+    deviates = NULL;
+
+    data = ELEMENT_WRAPPER_START "<deviate value=\"ad\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &deviates, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"ad\" of \"value\" attribute in \"deviate\" element. "
+            "Valid values are \"not-supported\", \"add\", \"replace\" and \"delete\".", "Line number 1.");
+    deviates = NULL;
+
+    data = ELEMENT_WRAPPER_START "<deviate value=\"adds\" />" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &deviates, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Invalid value \"adds\" of \"value\" attribute in \"deviate\" element. "
+            "Valid values are \"not-supported\", \"add\", \"replace\" and \"delete\".", "Line number 1.");
+    deviates = NULL;
+
+    data = ELEMENT_WRAPPER_START
+            "<deviate value=\"not-supported\">\n"
+            "    <must condition=\"c\"/>\n"
+            "</deviate>"
+            ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &deviates, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Deviate of this type doesn't allow \"must\" as it's sub-element.", "Line number 2.");
+}
+
+static void
+test_deviation_elem(void **state)
+{
+    const char *data;
+    struct lysp_deviation *deviations = NULL;
+
+    /* invalid */
+    data = ELEMENT_WRAPPER_START "<deviation target-node=\"target\"/>" ELEMENT_WRAPPER_END;
+    assert_int_equal(test_element_helper(state, data, &deviations, NULL, NULL), LY_EVALID);
+    CHECK_LOG_CTX("Missing mandatory sub-element \"deviate\" of \"deviation\" element.", "Line number 1.");
+}
+
+static struct lysp_module *
+mod_renew(struct lysp_yin_ctx *ctx)
+{
+    struct ly_ctx *ly_ctx = PARSER_CUR_PMOD(ctx)->mod->ctx;
+    struct lysp_module *pmod;
+
+    lys_module_free(&fctx, PARSER_CUR_PMOD(ctx)->mod, 0);
+    pmod = calloc(1, sizeof *pmod);
+    ctx->parsed_mods->objs[0] = pmod;
+    pmod->mod = calloc(1, sizeof *pmod->mod);
+    pmod->mod->parsed = pmod;
+    pmod->mod->ctx = ly_ctx;
+
+    fctx.mod = pmod->mod;
+
+    return pmod;
+}
+
+static void
+test_module_elem(void **state)
+{
+    const char *data;
+    struct lysp_module *lysp_mod = mod_renew(YCTX);
+
+    /* max subelems */
+    data = "<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" name=\"mod\">\n"
+            "    <yang-version value=\"1.1\"/>\n"
+            "    <namespace uri=\"ns\"/>\n"
+            "    <prefix value=\"pref\"/>\n"
+            "    <include module=\"b-mod\"/>\n"
+            "    <import module=\"a-mod\"><prefix value=\"imp-pref\"/></import>\n"
+            "    <organization><text>org</text></organization>\n"
+            "    <contact><text>contact</text></contact>\n"
+            "    <description><text>desc</text></description>\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <revision date=\"2019-02-02\"/>\n"
+            "    <anydata name=\"anyd\"/>\n"
+            "    <anyxml name=\"anyx\"/>\n"
+            "    <choice name=\"choice\"/>\n"
+            "    <container name=\"cont\"/>\n"
+            "    <leaf name=\"leaf\"> <type name=\"type\"/> </leaf>\n"
+            "    <leaf-list name=\"llist\"> <type name=\"type\"/> </leaf-list>\n"
+            "    <list name=\"sub-list\"/>\n"
+            "    <uses name=\"uses-name\"/>\n"
+            "    <augment target-node=\"target\"/>\n"
+            "    <deviation target-node=\"target\">\n"
+            "        <deviate value=\"not-supported\"/>\n"
+            "    </deviation>\n"
+            "    <extension name=\"ext\"/>\n"
+            "    <feature name=\"feature\"/>\n"
+            "    <grouping name=\"grp\"/>\n"
+            "    <identity name=\"ident-name\"/>\n"
+            "    <notification name=\"notf\"/>\n"
+            "    <rpc name=\"rpc-name\"/>\n"
+            "    <typedef name=\"tpdf\"> <type name=\"type\"/> </typedef>\n"
+            EXT_SUBELEM "\n"
+            "</module>\n";
+    assert_int_equal(ly_in_new_memory(data, &UTEST_IN), LY_SUCCESS);
+    assert_int_equal(lyxml_ctx_new(UTEST_LYCTX, UTEST_IN, &YCTX->xmlctx), LY_SUCCESS);
+
+    assert_int_equal(yin_parse_mod(YCTX, lysp_mod), LY_SUCCESS);
+    assert_string_equal(lysp_mod->mod->name, "mod");
+    assert_string_equal(lysp_mod->revs, "2019-02-02");
+    assert_string_equal(lysp_mod->mod->ns, "ns");
+    assert_string_equal(lysp_mod->mod->prefix, "pref");
+    assert_null(lysp_mod->mod->filepath);
+    assert_string_equal(lysp_mod->mod->org, "org");
+    assert_string_equal(lysp_mod->mod->contact, "contact");
+    assert_string_equal(lysp_mod->mod->dsc, "desc");
+    assert_string_equal(lysp_mod->mod->ref, "ref");
+    assert_int_equal(lysp_mod->version, LYS_VERSION_1_1);
+    CHECK_LYSP_IMPORT(lysp_mod->imports, NULL, 0, "a-mod",
+            "imp-pref", NULL, "");
+    assert_string_equal(lysp_mod->includes->name, "b-mod");
+    assert_string_equal(lysp_mod->extensions->name, "ext");
+    assert_string_equal(lysp_mod->features->name, "feature");
+    assert_string_equal(lysp_mod->identities->name, "ident-name");
+    assert_string_equal(lysp_mod->typedefs->name, "tpdf");
+    assert_string_equal(lysp_mod->groupings->name, "grp");
+    assert_string_equal(lysp_mod->data->name, "anyd");
+    assert_int_equal(lysp_mod->data->nodetype, LYS_ANYDATA);
+    assert_string_equal(lysp_mod->data->next->name, "anyx");
+    assert_int_equal(lysp_mod->data->next->nodetype, LYS_ANYXML);
+    assert_string_equal(lysp_mod->data->next->next->name, "choice");
+    assert_int_equal(lysp_mod->data->next->next->nodetype, LYS_CHOICE);
+    assert_string_equal(lysp_mod->data->next->next->next->name, "cont");
+    assert_int_equal(lysp_mod->data->next->next->next->nodetype, LYS_CONTAINER);
+    assert_string_equal(lysp_mod->data->next->next->next->next->name, "leaf");
+    assert_int_equal(lysp_mod->data->next->next->next->next->nodetype, LYS_LEAF);
+    assert_string_equal(lysp_mod->data->next->next->next->next->next->name, "llist");
+    assert_int_equal(lysp_mod->data->next->next->next->next->next->nodetype, LYS_LEAFLIST);
+    assert_string_equal(lysp_mod->data->next->next->next->next->next->next->name, "sub-list");
+    assert_int_equal(lysp_mod->data->next->next->next->next->next->next->nodetype, LYS_LIST);
+    assert_string_equal(lysp_mod->data->next->next->next->next->next->next->next->name, "uses-name");
+    assert_int_equal(lysp_mod->data->next->next->next->next->next->next->next->nodetype, LYS_USES);
+    assert_null(lysp_mod->data->next->next->next->next->next->next->next->next);
+    assert_string_equal(lysp_mod->augments->nodeid, "target");
+    assert_string_equal(lysp_mod->rpcs->name, "rpc-name");
+    assert_string_equal(lysp_mod->notifs->name, "notf");
+    assert_string_equal(lysp_mod->deviations->nodeid, "target");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(lysp_mod->exts[0]), LY_STMT_MODULE);
+
+    /* min subelems */
+    ly_in_free(UTEST_IN, 0);
+    lyxml_ctx_free(YCTX->xmlctx);
+    lysp_mod = mod_renew(YCTX);
+    data = "<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" name=\"mod\">\n"
+            "    <namespace uri=\"ns\"/>\n"
+            "    <prefix value=\"pref\"/>\n"
+            "    <yang-version value=\"1.1\"/>\n"
+            "</module>";
+    assert_int_equal(ly_in_new_memory(data, &UTEST_IN), LY_SUCCESS);
+    assert_int_equal(lyxml_ctx_new(UTEST_LYCTX, UTEST_IN, &YCTX->xmlctx), LY_SUCCESS);
+    assert_int_equal(yin_parse_mod(YCTX, lysp_mod), LY_SUCCESS);
+    assert_string_equal(lysp_mod->mod->name, "mod");
+
+    /* incorrect subelem order */
+    ly_in_free(UTEST_IN, 0);
+    lyxml_ctx_free(YCTX->xmlctx);
+    lysp_mod = mod_renew(YCTX);
+    data = "<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" name=\"mod\">\n"
+            "    <feature name=\"feature\"/>\n"
+            "    <namespace uri=\"ns\"/>\n"
+            "    <prefix value=\"pref\"/>\n"
+            "    <yang-version value=\"1.1\"/>\n"
+            "</module>";
+    assert_int_equal(ly_in_new_memory(data, &UTEST_IN), LY_SUCCESS);
+    assert_int_equal(lyxml_ctx_new(UTEST_LYCTX, UTEST_IN, &YCTX->xmlctx), LY_SUCCESS);
+    assert_int_equal(yin_parse_mod(YCTX, lysp_mod), LY_EVALID);
+    CHECK_LOG_CTX("Invalid order of module\'s sub-elements \"namespace\" can\'t appear after \"feature\".", "Line number 3.");
+}
+
+static struct lysp_submodule *
+submod_renew(struct lysp_yin_ctx *ctx, const char *belongs_to)
+{
+    struct ly_ctx *ly_ctx = PARSER_CUR_PMOD(ctx)->mod->ctx;
+    struct lysp_submodule *submod;
+
+    lys_module_free(&fctx, PARSER_CUR_PMOD(ctx)->mod, 0);
+    submod = calloc(1, sizeof *submod);
+    ctx->parsed_mods->objs[0] = submod;
+    submod->mod = calloc(1, sizeof *submod->mod);
+    lydict_insert(ly_ctx, belongs_to, 0, &submod->mod->name);
+    submod->mod->parsed = (struct lysp_module *)submod;
+    submod->mod->ctx = ly_ctx;
+
+    fctx.mod = submod->mod;
+
+    return submod;
+}
+
+static void
+test_submodule_elem(void **state)
+{
+    const char *data;
+    struct lysp_submodule *lysp_submod = submod_renew(YCTX, "module-name");
+
+    /* max subelements */
+    data = "<submodule xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" name=\"mod\">\n"
+            "    <yang-version value=\"1.1\"/>\n"
+            "    <belongs-to module=\"module-name\">\n"
+            "        <prefix value=\"pref\"/>\n"
+            "    </belongs-to>\n"
+            "    <include module=\"b-mod\"/>\n"
+            "    <import module=\"a-mod\"><prefix value=\"imp-pref\"/></import>\n"
+            "    <organization><text>org</text></organization>\n"
+            "    <contact><text>contact</text></contact>\n"
+            "    <description><text>desc</text></description>\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <revision date=\"2019-02-02\"/>\n"
+            "    <anydata name=\"anyd\"/>\n"
+            "    <anyxml name=\"anyx\"/>\n"
+            "    <choice name=\"choice\"/>\n"
+            "    <container name=\"cont\"/>\n"
+            "    <leaf name=\"leaf\"> <type name=\"type\"/> </leaf>\n"
+            "    <leaf-list name=\"llist\"> <type name=\"type\"/> </leaf-list>\n"
+            "    <list name=\"sub-list\"/>\n"
+            "    <uses name=\"uses-name\"/>\n"
+            "    <augment target-node=\"target\"/>\n"
+            "    <deviation target-node=\"target\">\n"
+            "        <deviate value=\"not-supported\"/>\n"
+            "    </deviation>\n"
+            "    <extension name=\"ext\"/>\n"
+            "    <feature name=\"feature\"/>\n"
+            "    <grouping name=\"grp\"/>\n"
+            "    <identity name=\"ident-name\"/>\n"
+            "    <notification name=\"notf\"/>\n"
+            "    <rpc name=\"rpc-name\"/>\n"
+            "    <typedef name=\"tpdf\"> <type name=\"type\"/> </typedef>\n"
+            EXT_SUBELEM "\n"
+            "</submodule>\n";
+    assert_int_equal(ly_in_new_memory(data, &UTEST_IN), LY_SUCCESS);
+    assert_int_equal(lyxml_ctx_new(UTEST_LYCTX, UTEST_IN, &YCTX->xmlctx), LY_SUCCESS);
+
+    assert_int_equal(yin_parse_submod(YCTX, lysp_submod), LY_SUCCESS);
+    assert_string_equal(lysp_submod->name, "mod");
+    assert_string_equal(lysp_submod->revs, "2019-02-02");
+    assert_string_equal(lysp_submod->prefix, "pref");
+    assert_null(lysp_submod->filepath);
+    assert_string_equal(lysp_submod->org, "org");
+    assert_string_equal(lysp_submod->contact, "contact");
+    assert_string_equal(lysp_submod->dsc, "desc");
+    assert_string_equal(lysp_submod->ref, "ref");
+    assert_int_equal(lysp_submod->version, LYS_VERSION_1_1);
+    CHECK_LYSP_IMPORT(lysp_submod->imports, NULL, 0, "a-mod",
+            "imp-pref", NULL, "");
+    assert_string_equal(lysp_submod->includes->name, "b-mod");
+    assert_string_equal(lysp_submod->extensions->name, "ext");
+    assert_string_equal(lysp_submod->features->name, "feature");
+    assert_string_equal(lysp_submod->identities->name, "ident-name");
+    assert_string_equal(lysp_submod->typedefs->name, "tpdf");
+    assert_string_equal(lysp_submod->groupings->name, "grp");
+    assert_string_equal(lysp_submod->data->name, "anyd");
+    assert_int_equal(lysp_submod->data->nodetype, LYS_ANYDATA);
+    assert_string_equal(lysp_submod->data->next->name, "anyx");
+    assert_int_equal(lysp_submod->data->next->nodetype, LYS_ANYXML);
+    assert_string_equal(lysp_submod->data->next->next->name, "choice");
+    assert_int_equal(lysp_submod->data->next->next->nodetype, LYS_CHOICE);
+    assert_string_equal(lysp_submod->data->next->next->next->name, "cont");
+    assert_int_equal(lysp_submod->data->next->next->next->nodetype, LYS_CONTAINER);
+    assert_string_equal(lysp_submod->data->next->next->next->next->name, "leaf");
+    assert_int_equal(lysp_submod->data->next->next->next->next->nodetype, LYS_LEAF);
+    assert_string_equal(lysp_submod->data->next->next->next->next->next->name, "llist");
+    assert_int_equal(lysp_submod->data->next->next->next->next->next->nodetype, LYS_LEAFLIST);
+    assert_string_equal(lysp_submod->data->next->next->next->next->next->next->name, "sub-list");
+    assert_int_equal(lysp_submod->data->next->next->next->next->next->next->nodetype, LYS_LIST);
+    assert_string_equal(lysp_submod->data->next->next->next->next->next->next->next->name, "uses-name");
+    assert_int_equal(lysp_submod->data->next->next->next->next->next->next->next->nodetype, LYS_USES);
+    assert_null(lysp_submod->data->next->next->next->next->next->next->next->next);
+    assert_string_equal(lysp_submod->augments->nodeid, "target");
+    assert_string_equal(lysp_submod->rpcs->name, "rpc-name");
+    assert_string_equal(lysp_submod->notifs->name, "notf");
+    assert_string_equal(lysp_submod->deviations->nodeid, "target");
+    TEST_1_CHECK_LYSP_EXT_INSTANCE(&(lysp_submod->exts[0]), LY_STMT_SUBMODULE);
+
+    /* min subelemnts */
+    ly_in_free(UTEST_IN, 0);
+    lyxml_ctx_free(YCTX->xmlctx);
+    lysp_submod = submod_renew(YCTX, "module-name");
+    data = "<submodule xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" name=\"submod\">\n"
+            "    <yang-version value=\"1\"/>\n"
+            "    <belongs-to module=\"module-name\"><prefix value=\"pref\"/></belongs-to>\n"
+            "</submodule>";
+    assert_int_equal(ly_in_new_memory(data, &UTEST_IN), LY_SUCCESS);
+    assert_int_equal(lyxml_ctx_new(UTEST_LYCTX, UTEST_IN, &YCTX->xmlctx), LY_SUCCESS);
+    assert_int_equal(yin_parse_submod(YCTX, lysp_submod), LY_SUCCESS);
+    assert_string_equal(lysp_submod->prefix, "pref");
+    assert_int_equal(lysp_submod->version, LYS_VERSION_1_0);
+
+    /* incorrect subelem order */
+    ly_in_free(UTEST_IN, 0);
+    lyxml_ctx_free(YCTX->xmlctx);
+    lysp_submod = submod_renew(YCTX, "module-name");
+    data = "<submodule xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" name=\"submod\">\n"
+            "    <yang-version value=\"1\"/>\n"
+            "    <reference><text>ref</text></reference>\n"
+            "    <belongs-to module=\"module-name\"><prefix value=\"pref\"/></belongs-to>\n"
+            "</submodule>";
+    assert_int_equal(ly_in_new_memory(data, &UTEST_IN), LY_SUCCESS);
+    assert_int_equal(lyxml_ctx_new(UTEST_LYCTX, UTEST_IN, &YCTX->xmlctx), LY_SUCCESS);
+    assert_int_equal(yin_parse_submod(YCTX, lysp_submod), LY_EVALID);
+    CHECK_LOG_CTX("Invalid order of submodule's sub-elements \"belongs-to\" can't appear after \"reference\".", "Line number 4.");
+}
+
+static void
+test_yin_parse_module(void **state)
+{
+    const char *data;
+    struct lys_module *mod;
+    struct lysp_yin_ctx *yin_ctx = NULL;
+    struct ly_in *in = NULL;
+
+    mod = calloc(1, sizeof *mod);
+    mod->ctx = UTEST_LYCTX;
+    data = "<module xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\" xmlns:md=\"urn:ietf:params:xml:ns:yang:ietf-yang-metadata\" name=\"a\"> \n"
+            "    <yang-version value=\"1.1\"/>\n"
+            "    <namespace uri=\"urn:tests:extensions:metadata:a\"/>\n"
+            "    <prefix value=\"a\"/>\n"
+            "    <import module=\"ietf-yang-metadata\">\n"
+            "        <prefix value=\"md\"/>\n"
+            "    </import>\n"
+            "    <feature name=\"f\"/>\n"
+            "    <md:annotation name=\"x\">\n"
+            "        <description>\n"
+            "            <text>test</text>\n"
+            "        </description>\n"
+            "        <reference>\n"
+            "            <text>test</text>\n"
+            "        </reference>\n"
+            "        <if-feature name=\"f\"/>\n"
+            "        <status value=\"current\"/>\n"
+            "        <type name=\"uint8\"/>\n"
+            "        <units name=\"meters\"/>\n"
+            "    </md:annotation>\n"
+            "</module>\n";
+    assert_int_equal(ly_in_new_memory(data, &in), LY_SUCCESS);
+    assert_int_equal(yin_parse_module(&yin_ctx, in, mod), LY_SUCCESS);
+    assert_null(mod->parsed->exts->child->next->child);
+    assert_string_equal(mod->parsed->exts->child->next->arg, "test");
+    lys_module_free(&fctx, mod, 0);
+    lysp_yin_ctx_free(yin_ctx);
+    ly_in_free(in, 0);
+    mod = NULL;
+    yin_ctx = NULL;
+
+    mod = calloc(1, sizeof *mod);
+    mod->ctx = UTEST_LYCTX;
+    data = "<module name=\"example-foo\""
+            "    xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\""
+            "    xmlns:foo=\"urn:example:foo\""
+            "    xmlns:myext=\"urn:example:extensions\">\n"
+
+            "    <yang-version value=\"1\"/>\n"
+
+            "    <namespace uri=\"urn:example:foo\"/>\n"
+            "    <prefix value=\"foo\"/>\n"
+
+            "    <import module=\"example-extensions\">\n"
+            "        <prefix value=\"myext\"/>\n"
+            "    </import>\n"
+
+            "    <list name=\"interface\">\n"
+            "        <key value=\"name\"/>\n"
+            "        <leaf name=\"name\">\n"
+            "            <type name=\"string\"/>\n"
+            "        </leaf>\n"
+            "        <leaf name=\"mtu\">\n"
+            "            <type name=\"uint32\"/>\n"
+            "            <description>\n"
+            "                <text>The MTU of the interface.</text>\n"
+            "            </description>\n"
+            "            <myext:c-define name=\"MY_MTU\"/>\n"
+            "        </leaf>\n"
+            "    </list>\n"
+            "</module>\n";
+    assert_int_equal(ly_in_new_memory(data, &in), LY_SUCCESS);
+    assert_int_equal(yin_parse_module(&yin_ctx, in, mod), LY_SUCCESS);
+    lys_module_free(&fctx, mod, 0);
+    lysp_yin_ctx_free(yin_ctx);
+    ly_in_free(in, 0);
+    mod = NULL;
+    yin_ctx = NULL;
+
+    mod = calloc(1, sizeof *mod);
+    mod->ctx = UTEST_LYCTX;
+    data = "<module name=\"example-foo\" xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">\n"
+            "    <yang-version value=\"1\"/>\n"
+            "    <namespace uri=\"urn:example:foo\"/>\n"
+            "    <prefix value=\"foo\"/>\n"
+            "</module>\n";
+    assert_int_equal(ly_in_new_memory(data, &in), LY_SUCCESS);
+    assert_int_equal(yin_parse_module(&yin_ctx, in, mod), LY_SUCCESS);
+    lys_module_free(&fctx, mod, 0);
+    lysp_yin_ctx_free(yin_ctx);
+    ly_in_free(in, 0);
+    mod = NULL;
+    yin_ctx = NULL;
+
+    mod = calloc(1, sizeof *mod);
+    mod->ctx = UTEST_LYCTX;
+    data = "<submodule name=\"example-foo\" xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">"
+            "</submodule>\n";
+    assert_int_equal(ly_in_new_memory(data, &in), LY_SUCCESS);
+    assert_int_equal(yin_parse_module(&yin_ctx, in, mod), LY_EINVAL);
+    CHECK_LOG_CTX("Input data contains submodule which cannot be parsed directly without its main module.", NULL);
+    lys_module_free(&fctx, mod, 0);
+    lysp_yin_ctx_free(yin_ctx);
+    ly_in_free(in, 0);
+
+    mod = calloc(1, sizeof *mod);
+    mod->ctx = UTEST_LYCTX;
+    data = "<module name=\"example-foo\" xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">\n"
+            "    <yang-version value=\"1\"/>\n"
+            "    <namespace uri=\"urn:example:foo\"/>\n"
+            "    <prefix value=\"foo\"/>\n"
+            "</module>\n"
+            "<module>";
+    assert_int_equal(ly_in_new_memory(data, &in), LY_SUCCESS);
+    assert_int_equal(yin_parse_module(&yin_ctx, in, mod), LY_EVALID);
+    CHECK_LOG_CTX("Trailing garbage \"<module>\" after module, expected end-of-input.", "Line number 6.");
+    lys_module_free(&fctx, mod, 0);
+    lysp_yin_ctx_free(yin_ctx);
+    ly_in_free(in, 0);
+    mod = NULL;
+    yin_ctx = NULL;
+}
+
+static void
+test_yin_parse_submodule(void **state)
+{
+    const char *data;
+    struct lysp_yin_ctx *yin_ctx = NULL;
+    struct lysp_submodule *submod = NULL;
+    struct ly_in *in;
+
+    lydict_insert(UTEST_LYCTX, "a", 0, &PARSER_CUR_PMOD(YCTX)->mod->name);
+
+    data = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<submodule name=\"asub\""
+            "    xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\""
+            "    xmlns:a=\"urn:a\">\n"
+            "    <yang-version value=\"1\"/>\n"
+            "    <belongs-to module=\"a\">\n"
+            "        <prefix value=\"a_pref\"/>\n"
+            "    </belongs-to>\n"
+            "    <include module=\"atop\"/>\n"
+            "    <feature name=\"fox\"/>\n"
+            "    <notification name=\"bar-notif\">\n"
+            "        <if-feature name=\"bar\"/>\n"
+            "    </notification>\n"
+            "    <notification name=\"fox-notif\">\n"
+            "        <if-feature name=\"fox\"/>\n"
+            "    </notification>\n"
+            "    <augment target-node=\"/a_pref:top\">\n"
+            "        <if-feature name=\"bar\"/>\n"
+            "        <container name=\"bar-sub\"/>\n"
+            "    </augment>\n"
+            "    <augment target-node=\"/top\">\n"
+            "        <container name=\"bar-sub2\"/>\n"
+            "    </augment>\n"
+            "</submodule>";
+    assert_int_equal(ly_in_new_memory(data, &in), LY_SUCCESS);
+    assert_int_equal(yin_parse_submodule(&yin_ctx, UTEST_LYCTX, (struct lysp_ctx *)YCTX, in, &submod), LY_SUCCESS);
+    lysp_module_free(&fctx, (struct lysp_module *)submod);
+    lysp_yin_ctx_free(yin_ctx);
+    ly_in_free(in, 0);
+    yin_ctx = NULL;
+    submod = NULL;
+
+    data = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<submodule name=\"asub\" xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">\n"
+            "    <yang-version value=\"1\"/>\n"
+            "    <belongs-to module=\"a\">\n"
+            "        <prefix value=\"a_pref\"/>\n"
+            "    </belongs-to>\n"
+            "</submodule>";
+    assert_int_equal(ly_in_new_memory(data, &in), LY_SUCCESS);
+    assert_int_equal(yin_parse_submodule(&yin_ctx, UTEST_LYCTX, (struct lysp_ctx *)YCTX, in, &submod), LY_SUCCESS);
+    lysp_module_free(&fctx, (struct lysp_module *)submod);
+    lysp_yin_ctx_free(yin_ctx);
+    ly_in_free(in, 0);
+    yin_ctx = NULL;
+    submod = NULL;
+
+    data = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<module name=\"inval\" xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">"
+            "</module>";
+    assert_int_equal(ly_in_new_memory(data, &in), LY_SUCCESS);
+    assert_int_equal(yin_parse_submodule(&yin_ctx, UTEST_LYCTX, (struct lysp_ctx *)YCTX, in, &submod), LY_EINVAL);
+    CHECK_LOG_CTX("Input data contains module when a submodule is expected.", NULL);
+    lysp_module_free(&fctx, (struct lysp_module *)submod);
+    lysp_yin_ctx_free(yin_ctx);
+    ly_in_free(in, 0);
+    yin_ctx = NULL;
+    submod = NULL;
+
+    data = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+            "<submodule name=\"asub\" xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">\n"
+            "    <yang-version value=\"1\"/>\n"
+            "    <belongs-to module=\"a\">\n"
+            "        <prefix value=\"a_pref\"/>\n"
+            "    </belongs-to>\n"
+            "</submodule>\n"
+            "<submodule name=\"asub\" xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\">\n"
+            "    <yang-version value=\"1\"/>\n"
+            "    <belongs-to module=\"a\">\n"
+            "        <prefix value=\"a_pref\"/>\n"
+            "    </belongs-to>\n"
+            "</submodule>";
+    assert_int_equal(ly_in_new_memory(data, &in), LY_SUCCESS);
+    assert_int_equal(yin_parse_submodule(&yin_ctx, UTEST_LYCTX, (struct lysp_ctx *)YCTX, in, &submod), LY_EVALID);
+    CHECK_LOG_CTX("Trailing garbage \"<submodule name...\" after submodule, expected end-of-input.", "Line number 8.");
+    lysp_module_free(&fctx, (struct lysp_module *)submod);
+    lysp_yin_ctx_free(yin_ctx);
+    ly_in_free(in, 0);
+    yin_ctx = NULL;
+    submod = NULL;
+}
+
+int
+main(void)
+{
+
+    const struct CMUnitTest tests[] = {
+        UTEST(test_yin_match_keyword, setup, teardown),
+        UTEST(test_yin_parse_content, setup, teardown),
+        UTEST(test_validate_value, setup, teardown),
+        UTEST(test_valid_module),
+        UTEST(test_print_module),
+        UTEST(test_print_submodule),
+
+        UTEST(test_yin_match_argument_name),
+        cmocka_unit_test_setup_teardown(test_enum_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_bit_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_status_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_yin_element_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_yangversion_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_argument_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_belongsto_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_config_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_default_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_err_app_tag_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_err_msg_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_fracdigits_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_iffeature_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_length_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_modifier_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_namespace_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_pattern_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_value_position_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_prefix_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_range_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_reqinstance_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_revision_date_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_unique_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_units_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_yin_text_value_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_type_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_max_elems_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_min_elems_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_ordby_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_any_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_leaf_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_leaf_list_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_presence_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_key_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_uses_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_list_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_notification_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_grouping_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_container_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_case_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_choice_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_inout_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_action_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_augment_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_deviate_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_deviation_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_module_elem, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_submodule_elem, setup, teardown),
+
+        cmocka_unit_test_setup_teardown(test_yin_parse_module, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_yin_parse_submodule, setup, teardown),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/binary.c b/tests/utests/types/binary.c
new file mode 100644
index 0000000..05b6b97
--- /dev/null
+++ b/tests/utests/types/binary.c
@@ -0,0 +1,269 @@
+/**
+ * @file binary.c
+ * @author Michal Vaško <mvasko@cesnet.cz>
+ * @brief test for built-in binary type
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME, DATA) \
+    { \
+        struct lyd_node *tree_1; \
+        struct lyd_node *tree_2; \
+        char *xml_out, *data; \
+        data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+static void
+test_plugin_store(void **state)
+{
+    const char *val, *dec_val;
+    unsigned char bin_val[2];
+    struct ly_err_item *err = NULL;
+    struct lys_module *mod;
+    struct lyd_value value = {0};
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_BINARY]);
+    struct lysc_type *lysc_type;
+    LY_ERR ly_ret;
+    const char *schema;
+
+    /* create schema. Prepare common used variables */
+    schema = MODULE_CREATE_YANG("a", "leaf l {type binary;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+
+    /* check proper type */
+    assert_string_equal("libyang 2 - binary, version 1", type->id);
+
+    /* check store XML double pad */
+    val = "YWhveQ==";
+    dec_val = "ahoy";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val, strlen(val),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BINARY, val, dec_val, strlen(dec_val));
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, dec_val, strlen(dec_val),
+            0, LY_VALUE_LYB, NULL, 0, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BINARY, val, dec_val, strlen(dec_val));
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    /* single pad */
+    val = "YWhveWo=";
+    dec_val = "ahoyj";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val, strlen(val),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BINARY, val, dec_val, strlen(dec_val));
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, dec_val, strlen(dec_val),
+            0, LY_VALUE_LYB, NULL, 0, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BINARY, val, dec_val, strlen(dec_val));
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    /* no pad */
+    val = "YWhveWoy";
+    dec_val = "ahoyj2";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val, strlen(val),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BINARY, val, dec_val, strlen(dec_val));
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, dec_val, strlen(dec_val),
+            0, LY_VALUE_LYB, NULL, 0, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BINARY, val, dec_val, strlen(dec_val));
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    /* binary data */
+    val = "q80=";
+    bin_val[0] = 0xab;
+    bin_val[1] = 0xcd;
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val, strlen(val),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BINARY, val, bin_val, 2);
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, bin_val, 2,
+            0, LY_VALUE_LYB, NULL, 0, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BINARY, val, bin_val, 2);
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    /* newlines after every 64 chars */
+    val = "MIIEAzCCAuugAwIBAgIURc4sipHvJSlNrQIhRhZilBvV4RowDQYJKoZIhvcNAQEL\n"
+            "BQAwgZAxCzAJBgNVBAYTAkNaMRYwFAYDVQQIDA1Tb3V0aCBNb3JhdmlhMQ0wCwYD\n"
+            "VQQHDARCcm5vMRgwFgYDVQQKDA9DRVNORVQgei5zLnAuby4xDDAKBgNVBAsMA1RN\n"
+            "QzETMBEGA1UEAwwKZXhhbXBsZSBDQTEdMBsGCSqGSIb3DQEJARYOY2FAZXhhbXBs\n"
+            "ZS5vcmcwHhcNMjEwOTAzMTAyMTAxWhcNMzEwOTAxMTAyMTAxWjCBkDELMAkGA1UE\n"
+            "BhMCQ1oxFjAUBgNVBAgMDVNvdXRoIE1vcmF2aWExDTALBgNVBAcMBEJybm8xGDAW\n"
+            "BgNVBAoMD0NFU05FVCB6LnMucC5vLjEMMAoGA1UECwwDVE1DMRMwEQYDVQQDDApl\n"
+            "eGFtcGxlIENBMR0wGwYJKoZIhvcNAQkBFg5jYUBleGFtcGxlLm9yZzCCASIwDQYJ\n"
+            "KoZIhvcNAQEBBQADggEPADCCAQoCggEBAN4Ld3JDDocyy9KXNJhEUPeZpQW3UdUN\n"
+            "Xloeh5n/bxasgThkBuQ7oF/nKyVUe517U1CJA993ZIc0jhIWThAnqXkz70DX5EZ7\n"
+            "ancPd01MidA6T8k1RYYJWr+vyIRYYBYzK7LSnU6wMWqPTgzZB+KMWwb065ooLEB5\n"
+            "XwqAeTIMPLRqM1Galewl4ZSuRJnrXxRjfF3AWNyC9dZw6wIg8cppvoLdBGQiFJQf\n"
+            "9SgiVy+HyedAytFEixqKAAIgQUJwhCgbEd6jGFbeaL8HT4MFp1VmaaUBQMkZj/Gn\n"
+            "KBwCk5BEMu76EN1pzHc4Dd6DabQNGCnsqOPe31yhQGmNFy9R6zNnWZMCAwEAAaNT\n"
+            "MFEwHQYDVR0OBBYEFM7w/pO8vk5oowvWPoCKo0RW/JcnMB8GA1UdIwQYMBaAFM7w\n"
+            "/pO8vk5oowvWPoCKo0RW/JcnMA8GA1UdEwEB/wQFMAMBAf8wDQYJKoZIhvcNAQEL\n"
+            "BQADggEBAG/xfYuRKnCyiwYC/K7kAjHmCNnLCr1mx8P1ECsSJPme3OThDTNeGf8i\n"
+            "N2952tGmMFDa+DaAwPc6Gt3cWTb/NYMTLWlt2yj5rJAcLXxIU0SMafBf+F7E/R8A\n"
+            "b/HDDjs0pQaJ0EJhQJVkMdfj3Wq9l0dJT5iEBUrUQflDufiMdEJEIGKZh86MgzEL\n"
+            "bcn1QX8dlLc91M2OifWStqLzXPicG+jjuoPUceC0flMQDb2qx03sxvJKfYfS5ArA\n"
+            "CqvdWyXLoP7DI9THJrMI/vBHJKpl4Wtmsh2OLn9VHauFMzPSGke5GwjXCpbXGepj\n"
+            "9qWN8Gd/FWgSDH2OBvZ6aHdB1pPjN9k=";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val, strlen(val),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    /* empty value */
+    val = "";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val, strlen(val),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BINARY, "", "", 0);
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    /* short value */
+    val = "YQ==";
+    dec_val = "a";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val, strlen(val),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BINARY, val, dec_val, strlen(dec_val));
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, dec_val, strlen(dec_val),
+            0, LY_VALUE_LYB, NULL, 0, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BINARY, val, dec_val, strlen(dec_val));
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    /*
+     * ERROR TESTS
+     */
+    val = "q80.";
+    err = NULL;
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val, strlen(val),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EVALID, ly_ret);
+    assert_string_equal(err->msg, "Invalid Base64 character '.'.");
+    ly_err_free(err);
+
+    val = "q80";
+    err = NULL;
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val, strlen(val),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EVALID, ly_ret);
+    assert_string_equal(err->msg, "Base64 encoded value length must be divisible by 4.");
+    ly_err_free(err);
+}
+
+static void
+test_plugin_print(void **state)
+{
+    const char *schema, *val;
+    struct lyd_value value = {0};
+    struct lys_module *mod;
+    struct lysc_type *lysc_type;
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_BINARY]);
+    struct ly_err_item *err = NULL;
+
+    /* create schema. Prepare common used variables */
+    schema = MODULE_CREATE_YANG("a", "leaf l {type binary;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+
+    /* Testing empty value. */
+    val = "";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val, strlen(val),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    assert_string_equal("", value.realtype->plugin->print(UTEST_LYCTX, &(value), LY_VALUE_CANON, NULL, NULL, NULL));
+    type->free(UTEST_LYCTX, &value);
+}
+
+static void
+test_plugin_duplicate(void **state)
+{
+    const char *schema, *val;
+    struct lyd_value value = {0}, dup;
+    struct lys_module *mod;
+    struct lysc_type *lysc_type;
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_BINARY]);
+    struct ly_err_item *err = NULL;
+
+    /* create schema. Prepare common used variables */
+    schema = MODULE_CREATE_YANG("a", "leaf l {type binary;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+
+    /* Testing empty value. */
+    val = "";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val, strlen(val),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &value, &dup));
+    CHECK_LYD_VALUE(dup, BINARY, "", "", 0);
+    type->free(UTEST_LYCTX, &value);
+    type->free(UTEST_LYCTX, &dup);
+}
+
+static void
+test_data_lyb(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("lyb", "leaf port {type binary;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_LYB("lyb", "port", "");
+    TEST_SUCCESS_LYB("lyb", "port", "YWhveQ==");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_plugin_store),
+        UTEST(test_plugin_print),
+        UTEST(test_plugin_duplicate),
+        UTEST(test_data_lyb),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/bits.c b/tests/utests/types/bits.c
new file mode 100644
index 0000000..3d42ebc
--- /dev/null
+++ b/tests/utests/types/bits.c
@@ -0,0 +1,1117 @@
+/**
+ * @file bits.c
+ * @author Radek Iša <isa@cesnet.cz>
+ * @brief test for int8 values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* GLOBAL INCLUDE HEADERS */
+#include <ctype.h>
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+
+#define MODULE_CREATE_YIN(MOD_NAME, NODES) \
+    "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" \
+    "<module name=\"" MOD_NAME "\"\n" \
+    "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n" \
+    "        xmlns:pref=\"urn:tests:" MOD_NAME "\">\n" \
+    "  <yang-version value=\"1.1\"/>\n" \
+    "  <namespace uri=\"urn:tests:" MOD_NAME "\"/>\n" \
+    "  <prefix value=\"pref\"/>\n" \
+    NODES \
+    "</module>\n"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_SUCCESS_JSON(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "{\"" MOD_NAME ":port\":\"" DATA "\"}"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME, DATA) \
+    { \
+        struct lyd_node *tree_1; \
+        struct lyd_node *tree_2; \
+        char *xml_out, *data; \
+        data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+#define TEST_ERROR_JSON(MOD_NAME, DATA) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "{\"" MOD_NAME ":port\":" DATA "}"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+static void
+test_schema_yang(void **state)
+{
+    const char *schema;
+    struct lys_module *mod;
+    struct lysc_node_leaf *lysc_leaf;
+    struct lysp_node_leaf *lysp_leaf;
+    struct lysc_type_bits *lysc_type;
+
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type bits { bit zero;\nbit one;"
+            " bit ten{position 10;}\tbit \"eleven\"; bit last{position 4294967295; }}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    lysc_type = (struct lysc_type_bits *) lysc_leaf->type;
+    CHECK_LYSC_TYPE_BITS(lysc_type, 0, 5);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[0]), 0,  NULL, 0, 0, "zero", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[1]), 1,  NULL, 0, 0, "one", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[2]), 10, NULL, 0, 0, "ten", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[3]), 11, NULL, 0, 0, "eleven", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[4]), 4294967295, NULL, 0, 0, "last", NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 5, 0, 0, 0, 0x02, 0, 0, "bits", 0, 0, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YANG("T1", "leaf port {type bits { bit _ten {position 10;} bit _ten-one;"
+            " bit _two {position 2;} bit ten_end...;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    lysc_type = (struct lysc_type_bits *) lysc_leaf->type;
+    CHECK_LYSC_TYPE_BITS(lysc_type, 0, 4);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[0]), 2,   NULL, 0, 0, "_two",     NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[1]), 10,  NULL, 0, 0, "_ten",     NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[2]), 11,  NULL, 0, 0, "_ten-one", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[3]), 12,  NULL, 0, 0, "ten_end...",  NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 4, 0, 0, 0, 0x02, 0, 0, "bits", 0, 0, 1, 0, 0, 0);
+
+    /* TEST MODULE SUBTYPE */
+    schema = MODULE_CREATE_YANG("T2", "typedef my_type{type bits {"
+            " bit ten {position 10;} bit eleven; bit two {position 2;} bit twelve;}}"
+            "leaf port {type my_type;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    lysc_type = (struct lysc_type_bits *) lysc_leaf->type;
+    CHECK_LYSC_TYPE_BITS(lysc_type, 0, 4);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[0]), 2,   NULL, 0, 0, "two",     NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[1]), 10,  NULL, 0, 0, "ten",     NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[2]), 11,  NULL, 0, 0, "eleven", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[3]), 12,  NULL, 0, 0, "twelve",  NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0, 0, 0, "my_type", 0, 0, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YANG("T3", "typedef my_type{type bits {"
+            "   bit ten {position 10;} bit eleven; bit two {position 2;} bit twelve;}}"
+            "leaf port {type my_type {"
+            "   bit ten {position 10;} bit two;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    lysc_type = (struct lysc_type_bits *) lysc_leaf->type;
+    CHECK_LYSC_TYPE_BITS(lysc_type, 0, 2);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[0]), 2,   NULL, 0, 0, "two",     NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[1]), 10,  NULL, 0, 0, "ten",     NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 2, 0, 0, 0, 0x02, 0, 0, "my_type", 0, 0, 1, 0, 0, 0);
+
+    /*
+     * TEST ERROR
+     */
+    /* test change bit possition */
+    schema = MODULE_CREATE_YANG("TERR_0", "typedef my_type{type bits {"
+            "   bit ten {position 10;} bit eleven; bit two {position 2;} bit \"twelve\";}}"
+            "leaf port {type my_type {"
+            "   bit ten {position 11;} bit two;}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid bits - position of the item \"ten\" has changed from 10 to 11 in the derived type.", "/TERR_0:port");
+
+    /* add new bit */
+    schema = MODULE_CREATE_YANG("TERR_1", "typedef my_type{type bits {"
+            "   bit ten {position 10;} bit eleven; bit two {position 2;} bit twelve;}}"
+            "leaf port {type my_type {"
+            "   bit ten {position 10;} bit two;  bit test;}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid bits - derived type adds new item \"test\".", "/TERR_1:port");
+
+    /* different max value => autoadd index */
+    schema = MODULE_CREATE_YANG("TERR_2", "leaf port {type bits {"
+            " bit first {position -1;} bit second;"
+            "}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_2\" failed.", NULL,
+            "Invalid value \"-1\" of \"position\".", "Line number 5.");
+
+    /* different max value => autoadd index */
+    schema = MODULE_CREATE_YANG("TERR_3", "leaf port {type bits {"
+            " bit first {position 4294967295;} bit second;"
+            "}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid bits - it is not possible to auto-assign bit position for \"second\" since the highest value is already 4294967295.",
+            "/TERR_3:port");
+
+    schema = MODULE_CREATE_YANG("TERR_4", "leaf port {type bits {"
+            " bit first {position 10;} bit \"\";"
+            "}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_4\" failed.", NULL,
+            "Statement argument is required.", "Line number 5.");
+
+    /* wrong character */
+    schema = MODULE_CREATE_YANG("TERR_5", "leaf port {type bits {"
+            " bit first {position 10;} bit abcd^;"
+            "}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_5\" failed.", NULL,
+            "Invalid identifier character '^' (0x005e).", "Line number 5.");
+
+    schema = MODULE_CREATE_YANG("TERR_6", "leaf port {type bits {"
+            " bit hi; bit hi;"
+            "}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_6\" failed.", NULL,
+            "Duplicate identifier \"hi\" of bit statement.", "Line number 5.");
+
+    /* wrong character */
+    schema = MODULE_CREATE_YANG("TERR_7", "leaf port {type bits {"
+            " bit first {position 10;} bit \"ab&cd\";"
+            "}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_7\" failed.", NULL,
+            "Invalid identifier character '&' (0x0026).", "Line number 5.");
+
+    schema = MODULE_CREATE_YANG("TERR_8", "leaf port {type bits {"
+            " bit first {position 10;} bit \"4abcd\";"
+            "}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_8\" failed.", NULL,
+            "Invalid identifier first character '4' (0x0034).", "Line number 5.");
+
+    schema = MODULE_CREATE_YANG("TERR_9", "leaf port {type bits;}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Missing bit substatement for bits type.", "/TERR_9:port");
+
+    /* new features of YANG 1.1 in YANG 1.0 */
+    schema = "module TERR_10 {"
+            "  namespace \"urn:tests:TERR_10\";"
+            "  prefix pref;"
+            "  feature f;"
+            "  leaf l {type bits {"
+            "    bit one {if-feature f;}"
+            "  }}"
+            "}";
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_10\" failed.", NULL,
+            "Invalid keyword \"if-feature\" as a child of \"bit\" - the statement is allowed only in YANG 1.1 modules.",
+            "Line number 1.");
+
+    schema = "module TERR_11 {"
+            "  namespace \"urn:tests:TERR_10\";"
+            "  prefix pref;"
+            "  typedef mytype {type bits {bit one;}}"
+            "  leaf l {type mytype {bit one;}}"
+            "}";
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Bits type can be subtyped only in YANG 1.1 modules.", "/TERR_11:l");
+
+    /* feature is not present */
+    schema = MODULE_CREATE_YANG("IF_0", "feature f;"
+            "leaf port {type bits { bit zero;\nbit one;"
+            " bit ten{if-feature f; position 10;}\tbit eleven;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_int_equal(LY_ENOT, lys_feature_value (mod, "f"));
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    lysc_type = (struct lysc_type_bits *) lysc_leaf->type;
+    CHECK_LYSC_TYPE_BITS(lysc_type, 0, 3);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[0]), 0,  NULL, 0, 0, "zero", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[1]), 1,  NULL, 0, 0, "one", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[2]), 11, NULL, 0, 0, "eleven", NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 4, 0, 0, 0, 0x02, 0, 0, "bits", 0, 0, 1, 0, 0, 0);
+
+    /* feature is present */
+    schema = MODULE_CREATE_YANG("IF_1", "feature f;"
+            "leaf port {type bits { bit zero;\nbit one;"
+            " bit ten{position 10; if-feature f;}\tbit eleven;}}");
+    const char *IF_1_FEATURES[] = {"f", NULL};
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, IF_1_FEATURES, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    lysc_type = (struct lysc_type_bits *) lysc_leaf->type;
+    CHECK_LYSC_TYPE_BITS(lysc_type, 0, 4);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[0]), 0,  NULL, 0, 0, "zero", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[1]), 1,  NULL, 0, 0, "one", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[2]), 10, NULL, 0, 0, "ten", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[3]), 11, NULL, 0, 0, "eleven", NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 4, 0, 0, 0, 0x02, 0, 0, "bits", 0, 0, 1, 0, 0, 0);
+}
+
+static void
+test_schema_yin(void **state)
+{
+    const char *schema;
+    struct lys_module *mod;
+    struct lysc_node_leaf *lysc_leaf;
+    struct lysp_node_leaf *lysp_leaf;
+    struct lysc_type_bits *lysc_type;
+
+    schema = MODULE_CREATE_YIN("T0",
+            "<leaf name=\"port\"> <type name=\"bits\">"
+            "  <bit name=\"zero\"/> <bit name=\"one\"/>"
+            "  <bit name=\"ten\"> <position value=\"10\"/> </bit>"
+            "  <bit name=\"eleven\"/>"
+            "  <bit name=\"last\"> <position value=\"4294967295\"/> </bit>"
+            "</type></leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    lysc_type = (struct lysc_type_bits *) lysc_leaf->type;
+    CHECK_LYSC_TYPE_BITS(lysc_type, 0, 5);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[0]), 0,  NULL, 0, 0, "zero", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[1]), 1,  NULL, 0, 0, "one", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[2]), 10, NULL, 0, 0, "ten", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[3]), 11, NULL, 0, 0, "eleven", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[4]), 4294967295, NULL, 0, 0, "last", NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 5, 0, 0, 0, 0x02, 0, 0, "bits", 0, 0, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YIN("T1",
+            "<leaf name=\"port\"> <type name=\"bits\">"
+            "   <bit name=\"_ten\"> <position value=\"10\"/> </bit> <bit name=\"_ten-one\"/>"
+            "   <bit name=\"_two\"> <position value=\"2\"/>  </bit> <bit name=\"ten_end...\"/>"
+            "</type></leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    lysc_type = (struct lysc_type_bits *) lysc_leaf->type;
+    CHECK_LYSC_TYPE_BITS(lysc_type, 0, 4);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[0]), 2,   NULL, 0, 0, "_two",     NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[1]), 10,  NULL, 0, 0, "_ten",     NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[2]), 11,  NULL, 0, 0, "_ten-one", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[3]), 12,  NULL, 0, 0, "ten_end...",  NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 4, 0, 0, 0, 0x02, 0, 0, "bits", 0, 0, 1, 0, 0, 0);
+
+    /* TEST MODULE SUBTYPE */
+    schema = MODULE_CREATE_YIN("T2",
+            "<typedef name=\"my_type\"> <type name=\"bits\">"
+            "  <bit name=\"ten\"> <position value=\"10\"/> </bit>"
+            "  <bit name=\"eleven\"/> <bit name=\"two\"> <position value=\"2\"/> </bit>"
+            "  <bit name=\"twelve\"/>"
+            "</type> </typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\"/></leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    lysc_type = (struct lysc_type_bits *) lysc_leaf->type;
+    CHECK_LYSC_TYPE_BITS(lysc_type, 0, 4);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[0]), 2,   NULL, 0, 0, "two",     NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[1]), 10,  NULL, 0, 0, "ten",     NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[2]), 11,  NULL, 0, 0, "eleven", NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[3]), 12,  NULL, 0, 0, "twelve",  NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0, 0, 0, "my_type", 0, 0, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YIN("T3", "<typedef name=\"my_type\"> <type name=\"bits\">"
+            "   <bit name=\"ten\"> <position value=\"10\"/></bit>"
+            "   <bit name=\"eleven\"/> <bit name=\"two\"> <position value=\"2\"/> </bit>"
+            "   <bit name=\"twelve\"/>"
+            "</type></typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\">"
+            "   <bit name=\"ten\"> <position value=\"10\"/> </bit>"
+            "   <bit name=\"two\"/>"
+            "</type></leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    lysc_type = (struct lysc_type_bits *) lysc_leaf->type;
+    CHECK_LYSC_TYPE_BITS(lysc_type, 0, 2);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[0]), 2,   NULL, 0, 0, "two",     NULL);
+    CHECK_LYSC_TYPE_BITENUM_ITEM(&(lysc_type->bits[1]), 10,  NULL, 0, 0, "ten",     NULL);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 2, 0, 0, 0, 0x02, 0, 0, "my_type", 0, 0, 1, 0, 0, 0);
+
+    /*
+     * TEST ERROR
+     */
+    /* test change bit possition */
+    schema = MODULE_CREATE_YIN("TERR_0", "<typedef name=\"my_type\"> <type name=\"bits\">"
+            "   <bit name=\"ten\"> <position value=\"10\"/> </bit>"
+            "   <bit name=\"eleven\"/>"
+            "   <bit name=\"two\"> <position value=\"2\"/> </bit>"
+            "   <bit name=\"twelve\"/>"
+            "</type></typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\">"
+            "   <bit name=\"ten\"> <position value=\"11\"/> </bit> <bit name=\"two\"/>"
+            "</type></leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid bits - position of the item \"ten\" has changed from 10 to 11 in the derived type.", "/TERR_0:port");
+
+    /* add new bit */
+    schema = MODULE_CREATE_YIN("TERR_1",
+            "<typedef name=\"my_type\"> <type name=\"bits\">"
+            "   <bit name=\"ten\">  <position value=\"10\"/> </bit>"
+            "   <bit name=\"eleven\"/>"
+            "   <bit name=\"two\"> <position value=\"2\"/> </bit>"
+            "   <bit name=\"twelve\"/>"
+            "</type></typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\">"
+            "   <bit name=\"ten\"> <position value=\"10\"/> </bit>"
+            "   <bit name=\"two\"/>"
+            "   <bit name=\"test\"/>"
+            "</type></leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid bits - derived type adds new item \"test\".", "/TERR_1:port");
+
+    /* different max value => autoadd index */
+    schema = MODULE_CREATE_YIN("TERR_2",
+            "<leaf name=\"port\"> <type name=\"bits\">"
+            "   <bit name=\"first\"> <position value=\"-1\"> </bit>"
+            "   <bit name=\"second\">"
+            "</type></leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_2\" failed.", NULL,
+            "Invalid value \"-1\" of \"value\" attribute in \"position\" element.", "Line number 8.");
+
+    /* different max value => autoadd index */
+    schema = MODULE_CREATE_YIN("TERR_3",
+            "<leaf name=\"port\"> <type name=\"bits\">"
+            "  <bit name=\"first\"> <position value=\"4294967295\"/> </bit>"
+            "  <bit name=\"second\"/>"
+            "</type></leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid bits - it is not possible to auto-assign bit position for \"second\" since the highest value is already 4294967295.",
+            "/TERR_3:port");
+
+    schema = MODULE_CREATE_YIN("TERR_4",
+            "<leaf name=\"port\"> <type name=\"bits\">"
+            "  <bit name=\"  ahoj  \"> <position value=\"20\"/> </bit>"
+            "  <bit name=\"second\"/>"
+            "</type></leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_4\" failed.", NULL,
+            "Invalid identifier first character ' ' (0x0020).",
+            "Line number 8.");
+
+    schema = MODULE_CREATE_YIN("TERR_5",
+            "<leaf name=\"port\"> <type name=\"bits\">"
+            "  <bit name=\"ah oj\"> <position value=\"20\"/> </bit>"
+            "  <bit name=\"second\"/>"
+            "</type></leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_5\" failed.", NULL,
+            "Invalid identifier character ' ' (0x0020).",
+            "Line number 8.");
+
+    schema = MODULE_CREATE_YIN("TERR_6",
+            "<leaf name=\"port\"> <type name=\"bits\">"
+            "  <bit name=\"hi\"/> "
+            "  <bit name=\"hi\"/>"
+            "</type></leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_6\" failed.", NULL,
+            "Duplicate identifier \"hi\" of bit statement.",
+            "Line number 8.");
+
+    schema = MODULE_CREATE_YIN("TERR_7",
+            "<leaf name=\"port\"> <type name=\"bits\">"
+            "  <bit name=\"4ahoj\"> <position value=\"20\"/> </bit>"
+            "  <bit name=\"second\"/>"
+            "</type></leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_7\" failed.", NULL,
+            "Invalid identifier first character '4' (0x0034).",
+            "Line number 8.");
+
+    /* TEST EMPTY NAME*/
+    schema = MODULE_CREATE_YIN("TERR_8",
+            "<leaf name=\"port\"> <type name=\"bits\">"
+            "  <bit name=\"\"> <position value=\"20\"/> </bit>"
+            "  <bit name=\"second\"/>"
+            "</type></leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Parsing module \"TERR_8\" failed.", NULL,
+            "Empty identifier is not allowed.",
+            "Line number 8.");
+}
+
+static void
+test_schema_print(void **state)
+{
+    const char *schema_yang, *schema_yin;
+    char *printed;
+    struct lys_module *mod;
+
+    /* test print yang to yin */
+    schema_yang = MODULE_CREATE_YANG("PRINT0",
+            "typedef my_type{type bits {"
+            "   bit ten {position 10;} bit eleven; bit two {position 2;} bit twelve;}}"
+            "leaf port {type my_type {"
+            "   bit ten {position 10;} bit two;}}");
+
+    schema_yin = MODULE_CREATE_YIN("PRINT0",
+            "  <typedef name=\"my_type\">\n"
+            "    <type name=\"bits\">\n"
+            "      <bit name=\"ten\">\n"
+            "        <position value=\"10\"/>\n"
+            "      </bit>\n"
+            "      <bit name=\"eleven\"/>\n"
+            "      <bit name=\"two\">\n"
+            "        <position value=\"2\"/>\n"
+            "      </bit>\n"
+            "      <bit name=\"twelve\"/>\n"
+            "    </type>\n"
+            "  </typedef>\n"
+            "  <leaf name=\"port\">\n"
+            "    <type name=\"my_type\">\n"
+            "      <bit name=\"ten\">\n"
+            "        <position value=\"10\"/>\n"
+            "      </bit>\n"
+            "      <bit name=\"two\"/>\n"
+            "    </type>\n"
+            "  </leaf>\n");
+
+    UTEST_ADD_MODULE(schema_yang, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, schema_yin);
+    free(printed);
+
+    /* test print yin to yang */
+    schema_yang = MODULE_CREATE_YANG("PRINT1",
+            "\n"
+            "  typedef my_type {\n"
+            "    type bits {\n"
+            "      bit ten {\n"
+            "        position 10;\n"
+            "      }\n"
+            "      bit eleven;\n"
+            "      bit two {\n"
+            "        position 2;\n"
+            "      }\n"
+            "      bit twelve;\n"
+            "    }\n"
+            "  }\n\n"
+            "  leaf port {\n"
+            "    type my_type {\n"
+            "      bit ten {\n"
+            "        position 10;\n"
+            "      }\n"
+            "      bit two;\n"
+            "    }\n"
+            "  }\n");
+
+    schema_yin = MODULE_CREATE_YIN("PRINT1",
+            "  <typedef name=\"my_type\">\n"
+            "    <type name=\"bits\">\n"
+            "      <bit name=\"ten\">\n"
+            "        <position value=\"10\"/>\n"
+            "      </bit>\n"
+            "      <bit name=\"eleven\"/>\n"
+            "      <bit name=\"two\">\n"
+            "        <position value=\"2\"/>\n"
+            "      </bit>\n"
+            "      <bit name=\"twelve\"/>\n"
+            "    </type>\n"
+            "  </typedef>\n"
+            "  <leaf name=\"port\">\n"
+            "    <type name=\"my_type\">\n"
+            "      <bit name=\"ten\">\n"
+            "        <position value=\"10\"/>\n"
+            "      </bit>\n"
+            "      <bit name=\"two\"/>\n"
+            "    </type>\n"
+            "  </leaf>\n");
+
+    UTEST_ADD_MODULE(schema_yin, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, schema_yang);
+    free(printed);
+}
+
+static void
+test_data_xml(void **state)
+{
+
+    const char *schema;
+    struct lyd_node *tree;
+    const char *data;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("T0", "typedef my_type{type bits {"
+            "  bit ten {position 10;} bit eleven; bit two {position 2;} bit twelve;"
+            "  bit _test-end...;}}"
+            "leaf port {type my_type;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_XML("T0", "ten two twelve", BITS, "two ten twelve", "two", "ten", "twelve");
+    TEST_SUCCESS_XML("T0", "ten\ntwo\ttwelve", BITS, "two ten twelve", "two", "ten", "twelve");
+    TEST_SUCCESS_XML("T0", "ten two", BITS, "two ten", "two", "ten");
+    TEST_SUCCESS_XML("T0", "_test-end...", BITS, "_test-end...", "_test-end...");
+    TEST_SUCCESS_XML("T0", "twelve\nten\ttwo  \n eleven", BITS, "two ten eleven twelve",
+            "two", "ten", "eleven", "twelve");
+    TEST_SUCCESS_XML("T0", "", BITS, "");
+    TEST_SUCCESS_XML("T0", "\n\t", BITS, "");
+
+    TEST_ERROR_XML("T0", "twelvea");
+    CHECK_LOG_CTX("Invalid bit \"twelvea\".",
+            "Schema location \"/T0:port\", line number 1.");
+    TEST_ERROR_XML("T0", "twelve t");
+    CHECK_LOG_CTX("Invalid bit \"t\".",
+            "Schema location \"/T0:port\", line number 1.");
+    TEST_ERROR_XML("T0", "ELEVEN");
+    CHECK_LOG_CTX("Invalid bit \"ELEVEN\".",
+            "Schema location \"/T0:port\", line number 1.");
+
+    /* empty value  */
+    data = "<port xmlns=\"urn:tests:T0\"/>"; \
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0);
+    CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, BITS, "");
+    lyd_free_all(tree);
+
+}
+
+static void
+test_data_json(void **state)
+{
+    const char *schema;
+
+    /* variable for default value test */
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("T0", "typedef my_type{type bits {"
+            "  bit ten {position 10;} bit eleven; bit two {position 2;} bit twelve;"
+            "  bit _test-end...;}}"
+            "leaf port {type my_type;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_JSON("T0", "ten two twelve", BITS, "two ten twelve", "two", "ten", "twelve");
+    TEST_SUCCESS_JSON("T0", "ten\\ntwo\\ttwelve", BITS, "two ten twelve", "two", "ten", "twelve");
+    TEST_SUCCESS_JSON("T0", "ten two", BITS, "two ten", "two", "ten");
+    TEST_SUCCESS_JSON("T0", "_test-end...", BITS, "_test-end...", "_test-end...");
+    TEST_SUCCESS_JSON("T0", "twelve\\nten\\ttwo  \\n eleven", BITS, "two ten eleven twelve",
+            "two", "ten", "eleven", "twelve");
+    TEST_SUCCESS_JSON("T0", "", BITS, "");
+    TEST_SUCCESS_JSON("T0", "\\n\\t", BITS, "");
+
+    TEST_ERROR_JSON("T0", "twelvea");
+    CHECK_LOG_CTX("Invalid character sequence \"twelvea}\", expected a JSON value.",
+            "Line number 1.");
+    TEST_ERROR_JSON("T0", "twelve t");
+    CHECK_LOG_CTX("Invalid character sequence \"twelve t}\", expected a JSON value.",
+            "Line number 1.");
+    TEST_ERROR_JSON("T0", "ELEVEN");
+    CHECK_LOG_CTX("Invalid character sequence \"ELEVEN}\", expected a JSON value.",
+            "Line number 1.");
+}
+
+static void
+test_data_lyb(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("lyb", "typedef my_type{type bits {"
+            "  bit ten {position 10;} bit eleven; bit two {position 2;} bit twelve;"
+            "  bit _test-end...;}}"
+            "leaf port {type my_type;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_LYB("lyb", "port", "ten twelve");
+    TEST_SUCCESS_LYB("lyb", "port", "two");
+    TEST_SUCCESS_LYB("lyb", "port", "");
+}
+
+static void
+test_diff(void **state)
+{
+    const char *schema;
+    struct lyd_node *model_1, *model_2;
+    struct lyd_node *diff;
+    const char *expected_string;
+    const char *data_1;
+    const char *data_2;
+    const char *diff_expected;
+
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type bits { bit zero; bit one;"
+            " bit two; bit three;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    data_1 = "<port xmlns=\"urn:tests:T0\"> two three </port>";
+    data_2 = "<port xmlns=\"urn:tests:T0\"> one</port>";
+    diff_expected = "<port xmlns=\"urn:tests:T0\""
+            " xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"replace\""
+            " yang:orig-default=\"false\" yang:orig-value=\"two three\">one</port>";
+    CHECK_PARSE_LYD_PARAM(data_1, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1)
+    CHECK_PARSE_LYD_PARAM(data_2, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_2)
+    assert_int_equal(LY_SUCCESS, lyd_diff_siblings(model_1, model_2, 0, &diff));
+    assert_non_null(diff);
+    CHECK_LYD_STRING_PARAM(diff, diff_expected, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    assert_int_equal(LY_SUCCESS, lyd_diff_apply_all(&model_1, diff));
+    CHECK_LYD(model_1, model_2);
+    lyd_free_all(model_1);
+    lyd_free_all(model_2);
+    lyd_free_all(diff);
+
+    /* create data from diff */
+    diff_expected = "<port xmlns=\"urn:tests:T0\""
+            " xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"replace\""
+            " yang:orig-default=\"false\" yang:orig-value=\"two three \"></port>";
+    CHECK_PARSE_LYD_PARAM(diff_expected, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, diff)
+    data_1 = "<port xmlns=\"urn:tests:T0\"> two three </port>";
+    CHECK_PARSE_LYD_PARAM(data_1, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1)
+    assert_int_equal(LY_SUCCESS, lyd_diff_apply_all(&model_1, diff));
+    expected_string = "<port xmlns=\"urn:tests:T0\"/>";
+
+    CHECK_LYD_STRING_PARAM(model_1, expected_string, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    lyd_free_all(model_1);
+    lyd_free_all(diff);
+
+    /* create data from diff */
+    diff_expected = "<port xmlns=\"urn:tests:T0\""
+            " xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" yang:operation=\"replace\""
+            " yang:orig-default=\"false\" yang:orig-value=\"two three\"> one </port>";
+    CHECK_PARSE_LYD_PARAM(diff_expected, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, diff)
+    data_1 = "<port xmlns=\"urn:tests:T0\"> two three </port>";
+    CHECK_PARSE_LYD_PARAM(data_1, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1)
+    assert_int_equal(LY_SUCCESS, lyd_diff_apply_all(&model_1, diff));
+    expected_string = "<port xmlns=\"urn:tests:T0\">one</port>";
+
+    CHECK_LYD_STRING_PARAM(model_1, expected_string, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    lyd_free_all(model_1);
+    lyd_free_all(diff);
+
+}
+
+static void
+test_print(void **state)
+{
+    const char *schema;
+    const char *expected_string;
+    struct lyd_node *model_1;
+    const char *data;
+
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type bits { bit zero; bit one;"
+            " bit two; bit three;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* print zero bits */
+    data = "<port xmlns=\"urn:tests:T0\"></port>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1)
+    /* XML */
+    expected_string = "<port xmlns=\"urn:tests:T0\"/>";
+    CHECK_LYD_STRING_PARAM(model_1, expected_string, LYD_XML, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    /* JSON */
+    expected_string = "{\"T0:port\":\"\"}";
+    CHECK_LYD_STRING_PARAM(model_1, expected_string, LYD_JSON, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    /* free */
+    lyd_free_all(model_1);
+
+    /* print one bit */
+    data = "<port xmlns=\"urn:tests:T0\"> two </port>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1)
+    /* XML */
+    expected_string = "<port xmlns=\"urn:tests:T0\">two</port>";
+    CHECK_LYD_STRING_PARAM(model_1, expected_string, LYD_XML, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    /* JSON */
+    expected_string = "{\"T0:port\":\"two\"}";
+    CHECK_LYD_STRING_PARAM(model_1, expected_string, LYD_JSON, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    /* free */
+    lyd_free_all(model_1);
+
+    /* print two bits */
+    data = "<port xmlns=\"urn:tests:T0\">three two </port>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1)
+    /* XML */
+    expected_string = "<port xmlns=\"urn:tests:T0\">two three</port>";
+    CHECK_LYD_STRING_PARAM(model_1, expected_string, LYD_XML, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    /* JSON */
+    expected_string = "{\"T0:port\":\"two three\"}";
+    CHECK_LYD_STRING_PARAM(model_1, expected_string, LYD_JSON, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    /* free */
+    lyd_free_all(model_1);
+}
+
+static void
+test_plugin_store(void **state)
+{
+    const char *val_text = NULL;
+    struct ly_err_item *err = NULL;
+    struct lys_module *mod;
+    struct lyd_value value = {0};
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_BITS]);
+    struct lysc_type *lysc_type;
+    struct lysc_type lysc_type_test;
+    LY_ERR ly_ret;
+    char *alloc;
+    const char *schema;
+
+    /* create schema. Prepare common used variables */
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type bits { bit zero; bit one;"
+            " bit two; bit three;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+
+    /* check proper type */
+    assert_string_equal("libyang 2 - bits, version 1", type->id);
+
+    /* check store
+     */
+    val_text = "";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BITS, "");
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    val_text = "zero one two";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BITS, "zero one two", "zero", "one", "two");
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    val_text = "zero two";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, BITS, "zero two", "zero", "two");
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    val_text = "\n ";
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    CHECK_LYD_VALUE(value, BITS, "");
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    /*
+     * minor tests
+     * dynamic alocated input text
+     */
+    val_text = "two";
+    alloc = (char *)malloc(strlen(val_text) + 1);
+    memcpy(alloc, val_text, strlen(val_text) + 1);
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, alloc, strlen(val_text),
+            LYPLG_TYPE_STORE_DYNAMIC, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err);
+    alloc = NULL;
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    CHECK_LYD_VALUE(value, BITS, "two", "two");
+    type->free(UTEST_LYCTX, &value);
+
+    /* wrong lysc_type of value */
+    lysc_type_test = *lysc_type;
+    lysc_type_test.basetype = LY_TYPE_INT8;
+    val_text = "two";
+    ly_ret = type->store(UTEST_LYCTX, &lysc_type_test, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EINVAL, ly_ret);
+    ly_err_free(err);
+
+    /*
+     * ERROR TESTS
+     */
+    val_text = "two";
+    err = NULL;
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_HEXNUM, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EVALID, ly_ret);
+    ly_err_free(err);
+
+    val_text = "two two";
+    err = NULL;
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EVALID, ly_ret);
+    ly_err_free(err);
+}
+
+static void
+test_plugin_compare(void **state)
+{
+    struct ly_err_item *err = NULL;
+    struct lys_module *mod;
+    struct lyd_value values[10];
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_BITS]);
+    struct lysc_type *lysc_type;
+    LY_ERR ly_ret;
+    const char *schema;
+    /* different type */
+    const char *diff_type_text = "20";
+    struct lyd_value  diff_type_val;
+    struct lysc_type *diff_type;
+    /* Value which are going to be created to tested */
+    const char *val_init[] = {"", "two zero", "three", "zero two", "zero", "three"};
+
+    /* create schema. Prepare common used variables */
+    schema = MODULE_CREATE_YANG("T0", "typedef my_int_type { type bits { bit zero; bit one;"
+            " bit two; bit three;}}"
+            "leaf p1 {type my_int_type;}"
+            "leaf p2 {type my_int_type;}"
+            "leaf p3 {type my_int_type{bit three; bit zero;}}"
+            "leaf p4 {type string;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+
+    /* CREATE VALUES */
+    for (unsigned int it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        ly_ret = type->store(UTEST_LYCTX, lysc_type, val_init[it], strlen(val_init[it]),
+                0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &(values[it]), NULL, &err);
+        assert_int_equal(LY_SUCCESS, ly_ret);
+    }
+
+    /*
+     * BASIC TEST;
+     */
+    assert_int_equal(LY_SUCCESS, type->compare(&(values[0]), &(values[0])));
+    assert_int_equal(LY_SUCCESS, type->compare(&(values[1]), &(values[3])));
+    assert_int_equal(LY_ENOT, type->compare(&(values[0]), &(values[1])));
+    assert_int_equal(LY_ENOT, type->compare(&(values[3]), &(values[4])));
+    assert_int_equal(LY_ENOT, type->compare(&(values[1]), &(values[0])));
+    assert_int_equal(LY_ENOT, type->compare(&(values[1]), &(values[2])));
+    assert_int_equal(LY_SUCCESS, type->compare(&(values[2]), &(values[5])));
+
+    /*
+     * SAME TYPE but different node
+     */
+    diff_type_text = val_init[2];
+    diff_type = ((struct lysc_node_leaf *)mod->compiled->data->next)->type;
+    ly_ret = diff_type->plugin->store(UTEST_LYCTX, diff_type, diff_type_text, strlen(diff_type_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &diff_type_val, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    assert_int_equal(LY_SUCCESS, type->compare(&diff_type_val, &(values[2])));
+    assert_int_equal(LY_ENOT,    type->compare(&diff_type_val, &(values[1])));
+    type->free(UTEST_LYCTX, &(diff_type_val));
+
+    /*
+     * derivated type add some limitations
+     */
+    diff_type_text = val_init[2];
+    diff_type = ((struct lysc_node_leaf *)mod->compiled->data->next->next)->type;
+    ly_ret = diff_type->plugin->store(UTEST_LYCTX, diff_type, diff_type_text, strlen(diff_type_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &diff_type_val, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[2])));
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[1])));
+    type->free(UTEST_LYCTX, &(diff_type_val));
+
+    /*
+     * different type (STRING)
+     */
+    diff_type_text = val_init[2];
+    diff_type = ((struct lysc_node_leaf *)mod->compiled->data->next->next->next)->type;
+    ly_ret = diff_type->plugin->store(UTEST_LYCTX, diff_type, diff_type_text, strlen(diff_type_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &diff_type_val, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[2])));
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[0])));
+    type->free(UTEST_LYCTX, &(diff_type_val));
+
+    /* delete values */
+    for (unsigned int it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        type->free(UTEST_LYCTX, &(values[it]));
+    }
+}
+
+static void
+test_plugin_print(void **state)
+{
+    struct ly_err_item *err = NULL;
+    struct lys_module *mod;
+    struct lyd_value values[10];
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_BITS]);
+    struct lysc_type *lysc_type;
+    LY_ERR ly_ret;
+    const char *schema;
+    /* Value which are going to be created to tested */
+    const char *val_init[] = {"", "two zero", "three", "zero two", "zero", "three"};
+
+    /* create schema. Prepare common used variables */
+    schema = MODULE_CREATE_YANG("T0",
+            "leaf p1 { type bits { bit zero; bit one;"
+            " bit two; bit three;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+
+    /* CREATE VALUES */
+    for (unsigned int it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        ly_ret = type->store(UTEST_LYCTX, lysc_type, val_init[it], strlen(val_init[it]),
+                0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &(values[it]), NULL, &err);
+        assert_int_equal(LY_SUCCESS, ly_ret);
+    }
+
+    /* print value */
+    ly_bool dynamic = 0;
+
+    assert_string_equal("", type->print(UTEST_LYCTX, &(values[0]), LY_VALUE_XML, NULL, &dynamic, NULL));
+    assert_string_equal("zero two", type->print(UTEST_LYCTX, &(values[1]), LY_VALUE_XML, NULL, &dynamic, NULL));
+    assert_string_equal("three", type->print(UTEST_LYCTX, &(values[2]), LY_VALUE_XML, NULL, &dynamic, NULL));
+    assert_string_equal("zero two", type->print(UTEST_LYCTX, &(values[3]), LY_VALUE_XML, NULL, &dynamic, NULL));
+    assert_string_equal("zero", type->print(UTEST_LYCTX, &(values[4]), LY_VALUE_XML, NULL, &dynamic, NULL));
+    assert_string_equal("three", type->print(UTEST_LYCTX, &(values[5]), LY_VALUE_XML, NULL, &dynamic, NULL));
+
+    for (unsigned int it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        type->free(UTEST_LYCTX, &(values[it]));
+    }
+}
+
+static void
+test_plugin_dup(void **state)
+{
+    struct ly_err_item *err = NULL;
+    struct lys_module *mod;
+    struct lyd_value values[10];
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_BITS]);
+    struct lysc_type *lysc_type;
+    const char *schema;
+    LY_ERR ly_ret;
+    /* Value which are going to be tested */
+    const char *val_init[] = {"", "two zero", "three", "zero two", "zero", "three one two zero"};
+
+    /* create schema. Prepare common used variables */
+    schema = MODULE_CREATE_YANG("T0",
+            "leaf p1 { type bits { bit zero; bit one;"
+            " bit two; bit three;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+
+    /* CREATE VALUES */
+    for (unsigned int it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        ly_ret = type->store(UTEST_LYCTX, lysc_type, val_init[it], strlen(val_init[it]),
+                0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &(values[it]), NULL, &err);
+        assert_int_equal(LY_SUCCESS, ly_ret);
+    }
+
+    /* print duplicate value */
+    struct lyd_value dup_value;
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[0]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, BITS, "");
+    assert_ptr_equal(dup_value.realtype, values[0].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[1]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, BITS, "zero two", "zero", "two");
+    assert_ptr_equal(dup_value.realtype, values[1].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[2]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, BITS, "three", "three");
+    assert_ptr_equal(dup_value.realtype, values[2].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[3]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, BITS, "zero two", "zero", "two");
+    assert_ptr_equal(dup_value.realtype, values[3].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[4]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, BITS, "zero", "zero");
+    assert_ptr_equal(dup_value.realtype, values[4].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[5]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, BITS, "zero one two three", "zero", "one", "two", "three");
+    assert_ptr_equal(dup_value.realtype, values[5].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    /* error tests */
+    assert_int_equal(LY_EINVAL, type->duplicate(NULL, &(values[0]), &dup_value));
+
+    for (unsigned int it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        type->free(UTEST_LYCTX, &(values[it]));
+    }
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_schema_yang),
+        UTEST(test_schema_yin),
+        UTEST(test_schema_print),
+        UTEST(test_data_xml),
+        UTEST(test_data_json),
+        UTEST(test_data_lyb),
+        UTEST(test_diff),
+        UTEST(test_print),
+
+        UTEST(test_plugin_store),
+        UTEST(test_plugin_compare),
+        UTEST(test_plugin_print),
+        UTEST(test_plugin_dup),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/boolean.c b/tests/utests/types/boolean.c
new file mode 100644
index 0000000..841db2a
--- /dev/null
+++ b/tests/utests/types/boolean.c
@@ -0,0 +1,111 @@
+/**
+ * @file boolean.c
+ * @author Adam Piecek <piecek@cesnet.cz>
+ * @brief test for built-in enumeration type
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, NODE_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, NODE_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME, DATA) \
+    { \
+        struct lyd_node *tree_1; \
+        struct lyd_node *tree_2; \
+        char *xml_out, *data; \
+        data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "typedef tboolean {type boolean;}"
+            "leaf l1 {type boolean;}"
+            "leaf l2 {type tboolean;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_XML("defs", "l1", "true", BOOL, "true", 1);
+
+    TEST_SUCCESS_XML("defs", "l1", "false", BOOL, "false", 0);
+
+    TEST_SUCCESS_XML("defs", "l2", "false", BOOL, "false", 0);
+
+    /* invalid value */
+    TEST_ERROR_XML("defs", "l1", "unsure");
+    CHECK_LOG_CTX("Invalid boolean value \"unsure\".",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML("defs", "l1", " true");
+    CHECK_LOG_CTX("Invalid boolean value \" true\".",
+            "Schema location \"/defs:l1\", line number 1.");
+}
+
+static void
+test_plugin_lyb(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("lyb",
+            "leaf bool {type boolean;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_LYB("lyb", "bool", "true");
+    TEST_SUCCESS_LYB("lyb", "bool", "false");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+        UTEST(test_plugin_lyb),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/decimal64.c b/tests/utests/types/decimal64.c
new file mode 100644
index 0000000..e0a7cab
--- /dev/null
+++ b/tests/utests/types/decimal64.c
@@ -0,0 +1,125 @@
+/**
+ * @file decimal64.c
+ * @author Adam Piecek <piecek@cesnet.cz>
+ * @brief test for built-in enumeration type
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, NODE_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, NODE_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME, DATA) \
+    { \
+        struct lyd_node *tree_1; \
+        struct lyd_node *tree_2; \
+        char *xml_out, *data; \
+        data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "leaf l1 {type decimal64 {fraction-digits 1; range 1.5..10;}}"
+            "leaf l2 {type decimal64 {fraction-digits 18;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_XML("defs", "l1", "\n +8 \t\n  ", DEC64, "8.0", 80);
+    TEST_SUCCESS_XML("defs", "l1", "8.00", DEC64, "8.0", 80);
+
+    TEST_SUCCESS_XML("defs", "l2", "-9.223372036854775808", DEC64, "-9.223372036854775808",
+            INT64_C(-9223372036854775807) - INT64_C(1));
+    TEST_SUCCESS_XML("defs", "l2", "9.223372036854775807", DEC64, "9.223372036854775807", INT64_C(9223372036854775807));
+
+    TEST_ERROR_XML("defs", "l1", "\n 15 \t\n  ");
+    CHECK_LOG_CTX("Unsatisfied range - value \"15.0\" is out of the allowed range.",
+            "Schema location \"/defs:l1\", line number 3.");
+
+    TEST_ERROR_XML("defs", "l1", "\n 0 \t\n  ");
+    CHECK_LOG_CTX("Unsatisfied range - value \"0.0\" is out of the allowed range.",
+            "Schema location \"/defs:l1\", line number 3.");
+
+    TEST_ERROR_XML("defs", "l1", "xxx");
+    CHECK_LOG_CTX("Invalid 1. character of decimal64 value \"xxx\".",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML("defs", "l1", "");
+    CHECK_LOG_CTX("Invalid empty decimal64 value.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML("defs", "l1", "8.5  xxx");
+    CHECK_LOG_CTX("Invalid 6. character of decimal64 value \"8.5  xxx\".",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML("defs", "l1", "8.55  xxx");
+    CHECK_LOG_CTX("Value \"8.55\" of decimal64 type exceeds defined number (1) of fraction digits.",
+            "Schema location \"/defs:l1\", line number 1.");
+}
+
+static void
+test_plugin_lyb(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("lyb",
+            "leaf dec64 {type decimal64 {fraction-digits 1; range 1.5..10;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_LYB("lyb", "dec64", "8.00");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+        UTEST(test_plugin_lyb),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/empty.c b/tests/utests/types/empty.c
new file mode 100644
index 0000000..0ab9710
--- /dev/null
+++ b/tests/utests/types/empty.c
@@ -0,0 +1,108 @@
+/**
+ * @file empty.c
+ * @author Adam Piecek <piecek@cesnet.cz>
+ * @brief test for built-in enumeration type
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, NODE_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, NODE_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME, DATA) \
+    { \
+        struct lyd_node *tree_1; \
+        struct lyd_node *tree_2; \
+        char *xml_out, *data; \
+        data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "typedef tempty {type empty;}"
+            "leaf l1 {type empty;}"
+            "leaf l2 {type tempty;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_XML("defs", "l1", "", EMPTY, "");
+
+    TEST_SUCCESS_XML("defs", "l2", "", EMPTY, "");
+
+    /* invalid value */
+    TEST_ERROR_XML("defs", "l1", "x");
+    CHECK_LOG_CTX("Invalid empty value length 1.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML("defs", "l1", " ");
+    CHECK_LOG_CTX("Invalid empty value length 1.",
+            "Schema location \"/defs:l1\", line number 1.");
+}
+
+static void
+test_plugin_lyb(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("lyb",
+            "leaf empty {type empty;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_LYB("lyb", "empty", "");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+        UTEST(test_plugin_lyb),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/enumeration.c b/tests/utests/types/enumeration.c
new file mode 100644
index 0000000..660479f
--- /dev/null
+++ b/tests/utests/types/enumeration.c
@@ -0,0 +1,114 @@
+/**
+ * @file enumeration.c
+ * @author Adam Piecek <piecek@cesnet.cz>
+ * @brief test for built-in enumeration type
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, NODE_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, NODE_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME, DATA) \
+    { \
+        struct lyd_node *tree_1; \
+        struct lyd_node *tree_2; \
+        char *xml_out, *data; \
+        data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "feature f; leaf l1 {type enumeration {enum white; enum yellow {if-feature f;}}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_XML("defs", "l1", "white", ENUM, "white", "white");
+
+    /* disabled feature */
+    TEST_ERROR_XML("defs", "l1", "yellow");
+    CHECK_LOG_CTX("Invalid enumeration value \"yellow\".",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    /* leading/trailing whitespaces */
+    TEST_ERROR_XML("defs", "l1", " white");
+    CHECK_LOG_CTX("Invalid enumeration value \" white\".",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML("defs", "l1", "white\n");
+    CHECK_LOG_CTX("Invalid enumeration value \"white\n\".",
+            "Schema location \"/defs:l1\", line number 2.");
+
+    /* invalid value */
+    TEST_ERROR_XML("defs", "l1", "black");
+    CHECK_LOG_CTX("Invalid enumeration value \"black\".",
+            "Schema location \"/defs:l1\", line number 1.");
+}
+
+static void
+test_plugin_lyb(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("lyb", "leaf l1 {type enumeration {enum white; enum yellow; enum black;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_LYB("lyb", "l1", "white");
+    TEST_SUCCESS_LYB("lyb", "l1", "black");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+        UTEST(test_plugin_lyb),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/identityref.c b/tests/utests/types/identityref.c
new file mode 100644
index 0000000..cdfe057
--- /dev/null
+++ b/tests/utests/types/identityref.c
@@ -0,0 +1,123 @@
+/**
+ * @file identityref.c
+ * @author Adam Piecek <piecek@cesnet.cz>
+ * @brief test for built-in enumeration type
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, NAMESPACES, NODE_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\" " NAMESPACES ">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, NAMESPACES, NODE_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\" " NAMESPACES ">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME, DATA) \
+    { \
+        struct lyd_node *tree_1; \
+        struct lyd_node *tree_2; \
+        char *xml_out, *data; \
+        data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema, *schema2;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("ident-base", "identity ident-base;"
+            "identity ident-imp {base ident-base;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    schema2 = MODULE_CREATE_YANG("defs", "import ident-base {prefix ib;}"
+            "identity ident1 {base ib:ident-base;}"
+            "leaf l1 {type identityref {base ib:ident-base;}}");
+    UTEST_ADD_MODULE(schema2, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_XML("defs", "", "l1", "ident1", IDENT, "defs:ident1", "ident1");
+
+    TEST_SUCCESS_XML("defs", "xmlns:i=\"urn:tests:ident-base\"", "l1", "i:ident-imp", IDENT, "ident-base:ident-imp",
+            "ident-imp");
+
+    /* invalid value */
+    TEST_ERROR_XML("defs", "", "l1", "fast-ethernet");
+    CHECK_LOG_CTX("Invalid identityref \"fast-ethernet\" value - identity not found in module \"defs\".",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML("defs", "xmlns:x=\"urn:tests:defs\"", "l1", "x:slow-ethernet");
+    CHECK_LOG_CTX("Invalid identityref \"x:slow-ethernet\" value - identity not found in module \"defs\".",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML("defs", "xmlns:x=\"urn:tests:ident-base\"", "l1", "x:ident-base");
+    CHECK_LOG_CTX("Invalid identityref \"x:ident-base\" value - identity not derived from the base \"ident-base:ident-base\".",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML("defs", "xmlns:x=\"urn:tests:unknown\"", "l1", "x:ident-base");
+    CHECK_LOG_CTX("Invalid identityref \"x:ident-base\" value - unable to map prefix to YANG schema.",
+            "Schema location \"/defs:l1\", line number 1.");
+}
+
+static void
+test_plugin_lyb(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("lyb",
+            "identity idbase;"
+            "identity ident {base idbase;}"
+            "leaf lf {type identityref {base idbase;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_LYB("lyb", "lf", "ident");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+        UTEST(test_plugin_lyb),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/inet_types.c b/tests/utests/types/inet_types.c
new file mode 100644
index 0000000..eb4e480
--- /dev/null
+++ b/tests/utests/types/inet_types.c
@@ -0,0 +1,149 @@
+/**
+ * @file inet_types.c
+ * @author Michal Vaško <mvasko@cesnet.cz>
+ * @brief test for ietf-inet-types values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+
+#define MODULE_CREATE_YIN(MOD_NAME, NODES) \
+    "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" \
+    "<module name=\"" MOD_NAME "\"\n" \
+    "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n" \
+    "        xmlns:pref=\"urn:tests:" MOD_NAME "\">\n" \
+    "  <yang-version value=\"1.1\"/>\n" \
+    "  <namespace uri=\"urn:tests:" MOD_NAME "\"/>\n" \
+    "  <prefix value=\"pref\"/>\n" \
+    NODES \
+    "</module>\n"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    "  import ietf-inet-types {\n" \
+    "    prefix inet;\n" \
+    "  }\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, NODE_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME, DATA) \
+    { \
+        struct lyd_node *tree_1; \
+        struct lyd_node *tree_2; \
+        char *xml_out, *data; \
+        data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("a",
+            "leaf l {type inet:ip-address;}"
+            "leaf l2 {type inet:ipv6-address;}"
+            "leaf l3 {type inet:ip-address-no-zone;}"
+            "leaf l4 {type inet:ipv6-address-no-zone;}"
+            "leaf l5 {type inet:ip-prefix;}"
+            "leaf l6 {type inet:ipv4-prefix;}"
+            "leaf l7 {type inet:ipv6-prefix;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* ip-address */
+    TEST_SUCCESS_XML("a", "l", "192.168.0.1", UNION, "192.168.0.1", STRING, "192.168.0.1");
+    TEST_SUCCESS_XML("a", "l", "192.168.0.1%12", UNION, "192.168.0.1%12", STRING, "192.168.0.1%12");
+    TEST_SUCCESS_XML("a", "l", "2008:15:0:0:0:0:feAC:1", UNION, "2008:15::feac:1", STRING, "2008:15::feac:1");
+
+    /* ipv6-address */
+    TEST_SUCCESS_XML("a", "l2", "FAAC:21:011:Da85::87:daaF%1", STRING, "faac:21:11:da85::87:daaf%1");
+
+    /* ip-address-no-zone */
+    TEST_SUCCESS_XML("a", "l3", "127.0.0.1", UNION, "127.0.0.1", STRING, "127.0.0.1");
+    TEST_SUCCESS_XML("a", "l3", "0:00:000:0000:000:00:0:1", UNION, "::1", STRING, "::1");
+
+    /* ipv6-address-no-zone */
+    TEST_SUCCESS_XML("a", "l4", "A:B:c:D:e:f:1:0", STRING, "a:b:c:d:e:f:1:0");
+
+    /* ip-prefix */
+    TEST_SUCCESS_XML("a", "l5", "158.1.58.4/1", UNION, "128.0.0.0/1", STRING, "128.0.0.0/1");
+    TEST_SUCCESS_XML("a", "l5", "158.1.58.4/24", UNION, "158.1.58.0/24", STRING, "158.1.58.0/24");
+    TEST_SUCCESS_XML("a", "l5", "2000:A:B:C:D:E:f:a/16", UNION, "2000::/16", STRING, "2000::/16");
+
+    /* ipv4-prefix */
+    TEST_SUCCESS_XML("a", "l6", "0.1.58.4/32", STRING, "0.1.58.4/32");
+    TEST_SUCCESS_XML("a", "l6", "12.1.58.4/8", STRING, "12.0.0.0/8");
+
+    /* ipv6-prefix */
+    TEST_SUCCESS_XML("a", "l7", "::C:D:E:f:a/112", STRING, "::c:d:e:f:0/112");
+    TEST_SUCCESS_XML("a", "l7", "::C:D:E:f:a/110", STRING, "::c:d:e:c:0/110");
+    TEST_SUCCESS_XML("a", "l7", "::C:D:E:f:a/96", STRING, "::c:d:e:0:0/96");
+    TEST_SUCCESS_XML("a", "l7", "::C:D:E:f:a/55", STRING, "::/55");
+}
+
+static void
+test_data_lyb(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("lyb",
+            "leaf l {type inet:ip-address;}"
+            "leaf l2 {type inet:ipv6-address;}"
+            "leaf l3 {type inet:ip-address-no-zone;}"
+            "leaf l4 {type inet:ipv6-address-no-zone;}"
+            "leaf l5 {type inet:ip-prefix;}"
+            "leaf l6 {type inet:ipv4-prefix;}"
+            "leaf l7 {type inet:ipv6-prefix;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_LYB("lyb", "l", "192.168.0.1");
+    TEST_SUCCESS_LYB("lyb", "l2", "FAAC:21:011:Da85::87:daaF%1");
+    TEST_SUCCESS_LYB("lyb", "l3", "127.0.0.1");
+    TEST_SUCCESS_LYB("lyb", "l4", "A:B:c:D:e:f:1:0");
+    TEST_SUCCESS_LYB("lyb", "l5", "158.1.58.4/1");
+    TEST_SUCCESS_LYB("lyb", "l6", "12.1.58.4/8");
+    TEST_SUCCESS_LYB("lyb", "l7", "::C:D:E:f:a/112");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+        UTEST(test_data_lyb),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/instanceid.c b/tests/utests/types/instanceid.c
new file mode 100644
index 0000000..06c8622
--- /dev/null
+++ b/tests/utests/types/instanceid.c
@@ -0,0 +1,292 @@
+/**
+ * @file instanceid.c
+ * @author Adam Piecek <piecek@cesnet.cz>
+ * @brief test for built-in enumeration type
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML2(XML1, MOD_NAME, NAMESPACES, NODE_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = XML1 "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\" " NAMESPACES ">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 1, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML2(XML1, MOD_NAME, NAMESPACES, NODE_NAME, DATA, RET) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\" " NAMESPACES ">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, RET, tree); \
+        assert_null(tree); \
+    }
+
+#define LYB_CHECK_START \
+    struct lyd_node *tree_1; \
+    struct lyd_node *tree_2; \
+    char *xml_out, *data;
+
+#define LYB_CHECK_END \
+    { \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME1, DATA1, NODE_NAME2, DATA2) \
+    LYB_CHECK_START \
+    data = "<" NODE_NAME1 " xmlns=\"urn:tests:" MOD_NAME "\">" DATA1 "</" NODE_NAME1 ">" \
+    "<xdf:" NODE_NAME2 " xmlns:xdf=\"urn:tests:" MOD_NAME "\">/xdf:" DATA2 "</xdf:" NODE_NAME2 ">"; \
+    LYB_CHECK_END \
+
+#define TEST_SUCCESS_LYB2(MOD_NAME, NODE_NAME, DATA) \
+    { \
+        LYB_CHECK_START \
+        data = "<" NODE_NAME " xmlns:aa=\"urn:tests:lyb2\" xmlns=\"urn:tests:" MOD_NAME "\">/aa:" DATA "</" NODE_NAME ">"; \
+        LYB_CHECK_END \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema, *schema2;
+    const enum ly_path_pred_type val1[] = {LY_PATH_PREDTYPE_NONE, LY_PATH_PREDTYPE_NONE};
+    const enum ly_path_pred_type val2[] = {LY_PATH_PREDTYPE_LIST, LY_PATH_PREDTYPE_NONE};
+    const enum ly_path_pred_type val3[] = {LY_PATH_PREDTYPE_LEAFLIST};
+    const enum ly_path_pred_type val4[] = {LY_PATH_PREDTYPE_LIST, LY_PATH_PREDTYPE_NONE};
+    const enum ly_path_pred_type val5[] = {LY_PATH_PREDTYPE_LIST, LY_PATH_PREDTYPE_NONE};
+    const enum ly_path_pred_type val6[] = {LY_PATH_PREDTYPE_LIST, LY_PATH_PREDTYPE_NONE};
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("mod", "container cont {leaf l2 {type empty;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    schema2 = MODULE_CREATE_YANG("defs", "identity ident; identity ident-der1 {base ident;} identity ident-der2 {base ident;}"
+            "leaf l1 {type instance-identifier {require-instance true;}}"
+            "leaf l2 {type instance-identifier {require-instance false;}}"
+            "container cont {leaf l {type empty;}}"
+            "list list {key \"id\"; leaf id {type string;} leaf value {type string;}}"
+            "leaf-list llist {type uint32;}"
+            "list list-inst {key \"id\"; leaf id {type instance-identifier;} leaf value {type string;}}"
+            "list list-ident {key \"id\"; leaf id {type identityref {base ident;}} leaf value {type string;}}"
+            "list list2 {key \"id id2\"; leaf id {type string;} leaf id2 {type string;}}"
+            "list list-keyless {config false; leaf value {type string;}}");
+    UTEST_ADD_MODULE(schema2, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_XML2("<cont xmlns=\"urn:tests:defs\"><l/></cont>", "defs", "xmlns:xdf=\"urn:tests:defs\"", "l1",
+            "/xdf:cont/xdf:l", INST, "/defs:cont/l", val1);
+
+    TEST_SUCCESS_XML2("<list xmlns=\"urn:tests:defs\"><id>a</id></list><list xmlns=\"urn:tests:defs\"><id>b</id></list>",
+            "defs", "xmlns:xdf=\"urn:tests:defs\"", "xdf:l1", "/xdf:list[xdf:id='b']/xdf:id", INST,
+            "/defs:list[id='b']/id", val2);
+
+    TEST_SUCCESS_XML2("<llist xmlns=\"urn:tests:defs\">1</llist><llist xmlns=\"urn:tests:defs\">2</llist>",
+            "defs", "xmlns:xdf=\"urn:tests:defs\"", "xdf:l1", "/xdf:llist[.='1']", INST, "/defs:llist[.='1']", val3);
+
+    TEST_SUCCESS_XML2("<list-inst xmlns=\"urn:tests:defs\"><id xmlns:b=\"urn:tests:defs\">/b:llist[.='1']</id>"
+            "<value>x</value></list-inst>"
+            "<list-inst xmlns=\"urn:tests:defs\"><id xmlns:b=\"urn:tests:defs\">/b:llist[.='2']</id>"
+            "<value>y</value></list-inst>"
+            "<llist xmlns=\"urn:tests:defs\">1</llist><llist xmlns=\"urn:tests:defs\">2</llist>",
+            "defs", "xmlns:a=\"urn:tests:defs\"", "a:l1", "/a:list-inst[a:id=\"/a:llist[.='1']\"]/a:value",
+            INST, "/defs:list-inst[id=\"/defs:llist[.='1']\"]/value", val4);
+
+    TEST_SUCCESS_XML2("<list-ident xmlns=\"urn:tests:defs\"><id xmlns:b=\"urn:tests:defs\">b:ident-der1</id>"
+            "<value>x</value></list-ident>"
+            "<list-ident xmlns=\"urn:tests:defs\"><id xmlns:b=\"urn:tests:defs\">b:ident-der2</id>"
+            "<value>y</value></list-ident>",
+            "defs", "xmlns:a=\"urn:tests:defs\"", "a:l1", "/a:list-ident[a:id='a:ident-der1']/a:value",
+            INST, "/defs:list-ident[id='defs:ident-der1']/value", val5);
+
+    TEST_SUCCESS_XML2("<list2 xmlns=\"urn:tests:defs\"><id>defs:xxx</id><id2>x</id2></list2>"
+            "<list2 xmlns=\"urn:tests:defs\"><id>a:xxx</id><id2>y</id2></list2>",
+            "defs", "xmlns:a=\"urn:tests:defs\"", "a:l1", "/a:list2[a:id='a:xxx'][a:id2='y']/a:id2",
+            INST, "/defs:list2[id='a:xxx'][id2='y']/id2", val6);
+
+    /* syntax/semantic errors */
+    TEST_ERROR_XML2("<list xmlns=\"urn:tests:defs\"><id>a</id></list>"
+            "<list xmlns=\"urn:tests:defs\"><id>b</id><value>x</value></list>",
+            "defs", "xmlns:xdf=\"urn:tests:defs\"", "xdf:l1", "/xdf:list[2]/xdf:value", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/xdf:list[2]/xdf:value\" value - semantic error.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML2("",
+            "defs", "xmlns:xdf=\"urn:tests:defs\"", "xdf:l1", "/t:cont/t:1l", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/t:cont/t:1l\" value - syntax error.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML2("",
+            "defs", "xmlns:xdf=\"urn:tests:defs\"", "xdf:l1", "/t:cont:t:1l", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/t:cont:t:1l\" value - syntax error.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML2("",
+            "defs", "xmlns:xdf=\"urn:tests:defs\"", "xdf:l1", "/xdf:cont/xdf:invalid/xdf:path", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/xdf:cont/xdf:invalid/xdf:path\" value - semantic error.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    /* non-existing instances, instance-identifier is here in JSON format because it is already in internal
+     * representation without canonical prefixes */
+    TEST_ERROR_XML2("<cont xmlns=\"urn:tests:mod\"/>",
+            "defs", "xmlns:m=\"urn:tests:mod\"", "l1", "/m:cont/m:l2", LY_ENOTFOUND);
+    CHECK_LOG_CTX_APPTAG("Invalid instance-identifier \"/mod:cont/l2\" value - required instance not found.",
+            "Data location \"/defs:l1\".", "instance-required");
+
+    TEST_ERROR_XML2("<llist xmlns=\"urn:tests:defs\">1</llist>",
+            "defs", "xmlns:a=\"urn:tests:defs\"", "l1", "/a:llist[.='2']", LY_ENOTFOUND);
+    CHECK_LOG_CTX_APPTAG("Invalid instance-identifier \"/defs:llist[.='2']\" value - required instance not found.",
+            "Data location \"/defs:l1\".", "instance-required");
+
+    TEST_ERROR_XML2("<list2 xmlns=\"urn:tests:defs\"><id>a</id><id2>a</id2></list2>"
+            "<list2 xmlns=\"urn:tests:defs\"><id>c</id><id2>b</id2></list2>"
+            "<llist xmlns=\"urn:tests:defs\">a</llist>"
+            "<llist xmlns=\"urn:tests:defs\">b</llist>",
+            "defs", "xmlns:a=\"urn:tests:defs\"", "l1", "/a:list2[a:id='a'][a:id2='a']/a:id", LY_ENOTFOUND);
+    CHECK_LOG_CTX_APPTAG("Invalid instance-identifier \"/defs:list2[id='a'][id2='a']/id\" value - required instance not found.",
+            "Data location \"/defs:l1\".", "instance-required");
+
+    TEST_ERROR_XML2("<list2 xmlns=\"urn:tests:defs\"><id>a</id><id2>a</id2></list2>"
+            "<list2 xmlns=\"urn:tests:defs\"><id>c</id><id2>b</id2></list2>"
+            "<llist xmlns=\"urn:tests:defs\">1</llist>"
+            "<llist xmlns=\"urn:tests:defs\">2</llist>",
+            "defs", "xmlns:a=\"urn:tests:defs\"", "l1", "/a:llist[.='3']", LY_ENOTFOUND);
+    CHECK_LOG_CTX_APPTAG("Invalid instance-identifier \"/defs:llist[.='3']\" value - required instance not found.",
+            "Data location \"/defs:l1\".", "instance-required");
+
+    TEST_ERROR_XML2("",
+            "defs", "xmlns:a=\"urn:tests:defs\"", "l1", "/a:list-keyless[3]", LY_ENOTFOUND);
+    CHECK_LOG_CTX_APPTAG("Invalid instance-identifier \"/defs:list-keyless[3]\" value - required instance not found.",
+            "Data location \"/defs:l1\".", "instance-required");
+
+    /* more errors */
+    TEST_ERROR_XML2("<llist xmlns=\"urn:tests:defs\">x</llist>",
+            "defs", "xmlns:t=\"urn:tests:defs\"", "t:l1", "/t:llist[1", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/t:llist[1\" value - syntax error.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML2("<cont xmlns=\"urn:tests:mod\"/>",
+            "defs", "xmlns:m=\"urn:tests:mod\"", "l1", "/m:cont[1]", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/m:cont[1]\" value - semantic error.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML2("<cont xmlns=\"urn:tests:mod\"/>",
+            "defs", "xmlns:m=\"urn:tests:mod\"", "l1", "[1]", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"[1]\" value - syntax error.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML2("<cont xmlns=\"urn:tests:mod\"><l2/></cont>",
+            "defs", "xmlns:m=\"urn:tests:mod\"", "l1", "/m:cont/m:l2[l2='1']", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/m:cont/m:l2[l2='1']\" value - syntax error.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML2("<cont xmlns=\"urn:tests:mod\"><l2/></cont>",
+            "defs", "xmlns:m=\"urn:tests:mod\"", "l1", "/m:cont/m:l2[m:l2='1']", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/m:cont/m:l2[m:l2='1']\" value - semantic error.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML2("<llist xmlns=\"urn:tests:defs\">1</llist><llist xmlns=\"urn:tests:defs\">2</llist>",
+            "defs", "xmlns:t=\"urn:tests:defs\"", "t:l1", "/t:llist[4]", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/t:llist[4]\" value - semantic error.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML2("",
+            "defs", "xmlns:xdf=\"urn:tests:defs\"", "xdf:l2", "/t:llist[6]", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/t:llist[6]\" value - semantic error.",
+            "Schema location \"/defs:l2\", line number 1.");
+
+    TEST_ERROR_XML2("<list xmlns=\"urn:tests:defs\"><id>1</id><value>x</value></list>",
+            "defs", "xmlns:xdf=\"urn:tests:defs\"", "xdf:l2", "/xdf:list[xdf:value='x']", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/xdf:list[xdf:value='x']\" value - semantic error.",
+            "Schema location \"/defs:l2\", line number 1.");
+
+    TEST_ERROR_XML2("",
+            "defs", "xmlns:xdf=\"urn:tests:defs\"", "xdf:l2", "/xdf:list[.='x']", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/xdf:list[.='x']\" value - semantic error.",
+            "Schema location \"/defs:l2\", line number 1.");
+
+    TEST_ERROR_XML2("<llist xmlns=\"urn:tests:defs\">1</llist>",
+            "defs", "xmlns:t=\"urn:tests:defs\"", "t:l1", "/t:llist[.='x']", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/t:llist[.='x']\" value - semantic error.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML2("",
+            "defs", "xmlns:xdf=\"urn:tests:defs\"", "xdf:l2", "/t:llist[1][2]", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/t:llist[1][2]\" value - syntax error.",
+            "Schema location \"/defs:l2\", line number 1.");
+
+    TEST_ERROR_XML2("",
+            "defs", "xmlns:xdf=\"urn:tests:defs\"", "xdf:l2", "/t:llist[.='a'][.='b']", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/t:llist[.='a'][.='b']\" value - syntax error.",
+            "Schema location \"/defs:l2\", line number 1.");
+
+    TEST_ERROR_XML2("<list xmlns=\"urn:tests:defs\"><id>1</id><value>x</value></list>",
+            "defs", "xmlns:xdf=\"urn:tests:defs\"", "xdf:l2", "/xdf:list[xdf:id='1'][xdf:id='2']/xdf:value", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/xdf:list[xdf:id='1'][xdf:id='2']/xdf:value\" value - syntax error.",
+            "Schema location \"/defs:l2\", line number 1.");
+
+    TEST_ERROR_XML2("",
+            "defs", "xmlns:xdf=\"urn:tests:defs\"", "xdf:l2", "/xdf:list2[xdf:id='1']/xdf:value", LY_EVALID);
+    CHECK_LOG_CTX("Invalid instance-identifier \"/xdf:list2[xdf:id='1']/xdf:value\" value - semantic error.",
+            "Schema location \"/defs:l2\", line number 1.");
+}
+
+static void
+test_plugin_lyb(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("lyb",
+            "leaf-list leaflisttarget {type string;}"
+            "leaf inst {type instance-identifier {require-instance true;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_LYB("lyb", "leaflisttarget", "1", "inst", "leaflisttarget[.='1']");
+
+    /* ietf-netconf-acm node-instance-identifier type */
+    assert_int_equal(LY_SUCCESS, ly_ctx_set_searchdir(UTEST_LYCTX, TESTS_DIR_MODULES_YANG));
+    schema = MODULE_CREATE_YANG("lyb2",
+            "import ietf-netconf-acm {prefix acm;}"
+            "leaf-list ll {type string;}"
+            "leaf nii {type acm:node-instance-identifier;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_LYB2("lyb2", "nii", "ll[. = 'some_string']");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+        UTEST(test_plugin_lyb),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/instanceid_keys.c b/tests/utests/types/instanceid_keys.c
new file mode 100644
index 0000000..6d527cb
--- /dev/null
+++ b/tests/utests/types/instanceid_keys.c
@@ -0,0 +1,77 @@
+/**
+ * @file instanceid_keys.c
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief test for yang instance-identifier-keys type
+ *
+ * Copyright (c) 2022 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML_NS1(MOD_NAME, NODE_NAME, PREFIX, NS, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\" xmlns:" PREFIX "=\"" NS "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, NODE_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "import yang {prefix y;} leaf l1 {type y:instance-identifier-keys;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_XML_NS1("defs", "l1", "px", "urn:tests:defs", "[px:key='val']", STRING, "[defs:key='val']");
+
+    TEST_ERROR_XML("defs", "l1", "black");
+    CHECK_LOG_CTX("Invalid first character 'b', list key predicates expected.", "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML("defs", "l1", "[this is not a valid xpath]");
+    CHECK_LOG_CTX("Invalid character 0x69 ('i'), perhaps \"this\" is supposed to be a function call.",
+            "Schema location \"/defs:l1\", line number 1.");
+
+    TEST_ERROR_XML("defs", "l1", "[px:key='val']");
+    CHECK_LOG_CTX("Failed to resolve prefix \"px\".", "Schema location \"/defs:l1\", line number 1.");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/int16.c b/tests/utests/types/int16.c
new file mode 100644
index 0000000..f6796a1
--- /dev/null
+++ b/tests/utests/types/int16.c
@@ -0,0 +1,75 @@
+/**
+ * @file int16.c
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief test for int16 values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* GLOBAL INCLUDE HEADERS */
+#include <ctype.h>
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+#include "plugins_internal.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, ## __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "leaf port {type int16 {range -20..-10;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_ERROR_XML("defs", "100");
+    CHECK_LOG_CTX("Unsatisfied range - value \"100\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 1.");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/int32.c b/tests/utests/types/int32.c
new file mode 100644
index 0000000..9989a67
--- /dev/null
+++ b/tests/utests/types/int32.c
@@ -0,0 +1,75 @@
+/**
+ * @file int32.c
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief test for int32 values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* GLOBAL INCLUDE HEADERS */
+#include <ctype.h>
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+#include "plugins_internal.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, ## __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "leaf port {type int32;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_ERROR_XML("defs", "0x01");
+    CHECK_LOG_CTX("Invalid type int32 value \"0x01\".",
+            "Schema location \"/defs:port\", line number 1.");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/int64.c b/tests/utests/types/int64.c
new file mode 100644
index 0000000..6b5e47e
--- /dev/null
+++ b/tests/utests/types/int64.c
@@ -0,0 +1,83 @@
+/**
+ * @file int64.c
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief test for int32 values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* GLOBAL INCLUDE HEADERS */
+#include <ctype.h>
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+#include "plugins_internal.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, ## __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "leaf port {type int64;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_ERROR_XML("defs", "");
+    CHECK_LOG_CTX("Invalid type int64 empty value.",
+            "Schema location \"/defs:port\", line number 1.");
+
+    TEST_ERROR_XML("defs", "   ");
+    CHECK_LOG_CTX("Invalid type int64 empty value.",
+            "Schema location \"/defs:port\", line number 1.");
+
+    TEST_ERROR_XML("defs", "-10  xxx");
+    CHECK_LOG_CTX("Invalid type int64 value \"-10  xxx\".",
+            "Schema location \"/defs:port\", line number 1.");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/int8.c b/tests/utests/types/int8.c
new file mode 100644
index 0000000..7d0b9ad
--- /dev/null
+++ b/tests/utests/types/int8.c
@@ -0,0 +1,1765 @@
+/**
+ * @file int8.c
+ * @author Radek Iša <isa@cesnet.cz>
+ * @brief test for int8 values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* GLOBAL INCLUDE HEADERS */
+#include <ctype.h>
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+#include "plugins_internal.h"
+
+#define LYD_TREE_CREATE(INPUT, MODEL) \
+    CHECK_PARSE_LYD_PARAM(INPUT, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, MODEL)
+
+#define MODULE_CREATE_YIN(MOD_NAME, NODES) \
+    "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" \
+    "<module name=\"" MOD_NAME "\"\n" \
+    "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n" \
+    "        xmlns:pref=\"urn:tests:" MOD_NAME "\">\n" \
+    "  <yang-version value=\"1.1\"/>\n" \
+    "  <namespace uri=\"urn:tests:" MOD_NAME "\"/>\n" \
+    "  <prefix value=\"pref\"/>\n" \
+    NODES \
+    "</module>\n"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_SUCCESS_JSON(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "{\"" MOD_NAME ":port\":" DATA "}"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME, DATA) \
+    { \
+        struct lyd_node *tree_1; \
+        struct lyd_node *tree_2; \
+        char *xml_out, *data; \
+        data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+#define TEST_ERROR_JSON(MOD_NAME, DATA) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "{\"" MOD_NAME ":port\":" DATA "}"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+static void
+test_schema_yang(void **state)
+{
+    const char *schema;
+    struct lys_module *mod;
+    struct lysc_node_leaf *lysc_leaf;
+    struct lysp_node_leaf *lysp_leaf;
+    struct lysc_range *range;
+
+    schema = MODULE_CREATE_YANG("defs", "leaf port {type int8 {range \"0 .. 50 | 127\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_64, 0);
+    assert_int_equal(range->parts[0].max_64, 50);
+    assert_int_equal(range->parts[1].min_64, 127);
+    assert_int_equal(range->parts[1].max_64, 127);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "0 .. 50 | 127", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST MODULE T0 */
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type int8;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 0);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "int8", 0, 0, 1, 0, 0, 0);
+
+    /* TEST MODULE T1 */
+    schema = MODULE_CREATE_YANG("T1", "leaf port {type int8 {range \"0 .. 50 |51 .. 60\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_64, 0);
+    assert_int_equal(range->parts[0].max_64, 50);
+    assert_int_equal(range->parts[1].min_64, 51);
+    assert_int_equal(range->parts[1].max_64, 60);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "0 .. 50 |51 .. 60", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST MODULE T1 */
+    schema = MODULE_CREATE_YANG("T2", "leaf port {type int8 {range \"20\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 1, NULL);
+    assert_int_equal(range->parts[0].min_64, 20);
+    assert_int_equal(range->parts[0].max_64, 20);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "20", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST MODULE T3 */
+    schema = MODULE_CREATE_YANG("T3", "leaf port {type int8 {range \"-128 .. -60 | -1 .. 1 |  60 .. 127\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 3, NULL);
+    assert_int_equal(range->parts[0].min_64, -128);
+    assert_int_equal(range->parts[0].max_64, -60);
+    assert_int_equal(range->parts[1].min_64, -1);
+    assert_int_equal(range->parts[1].max_64,  1);
+    assert_int_equal(range->parts[2].min_64, 60);
+    assert_int_equal(range->parts[2].max_64, 127);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "-128 .. -60 | -1 .. 1 |  60 .. 127", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST MODULE T4 */
+    schema = MODULE_CREATE_YANG("T4", "leaf port {type int8 {range \"1 .. 1\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 1, NULL);
+    assert_int_equal(range->parts[0].min_64, 1);
+    assert_int_equal(range->parts[0].max_64, 1);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "1 .. 1", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST MODULE T4 */
+    schema = MODULE_CREATE_YANG("T5", "leaf port {type int8 {range \"7\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 1, NULL);
+    assert_int_equal(range->parts[0].min_64, 7);
+    assert_int_equal(range->parts[0].max_64, 7);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "7", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST MODULE T4 */
+    schema = MODULE_CREATE_YANG("T6", "leaf port {type int8 {range \"min .. max\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 1, NULL);
+    assert_int_equal(range->parts[0].min_64, -128);
+    assert_int_equal(range->parts[0].max_64, 127);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "min .. max", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST ERROR -60 .. 0 | 0 .. 127 */
+    schema = MODULE_CREATE_YANG("ERR0", "leaf port {type int8 {range \"-60 .. 0 | 0 .. 127\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EEXIST);
+    CHECK_LOG_CTX("Invalid range restriction - values are not in ascending order (0).", "/ERR0:port");
+
+    /* TEST ERROR 0 .. 128 */
+    schema = MODULE_CREATE_YANG("ERR1", "leaf port {type int8 {range \"0 .. 128\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EDENIED);
+    CHECK_LOG_CTX("Invalid range restriction - value \"128\" does not fit the type limitations.", "/ERR1:port");
+
+    /* TEST ERROR -129 .. 126 */
+    schema = MODULE_CREATE_YANG("ERR2", "leaf port {type int8 {range \"-129 .. 0\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EDENIED);
+    CHECK_LOG_CTX("Invalid range restriction - value \"-129\" does not fit the type limitations.", "/ERR2:port");
+
+    /* TEST ERROR 0 */
+    schema = MODULE_CREATE_YANG("ERR3", "leaf port {type int8 {range \"-129\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EDENIED);
+    CHECK_LOG_CTX("Invalid range restriction - value \"-129\" does not fit the type limitations.", "/ERR3:port");
+
+    /*
+     * TEST MODULE SUBTYPE
+     */
+    schema = MODULE_CREATE_YANG("TS0",
+            "typedef my_int_type {"
+            "    type int8 {range \"-128 .. -60 | -1 .. 1 |  60 .. 127\";}"
+            "}"
+            "leaf my_leaf {type my_int_type; }");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "my_leaf", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 3, NULL);
+    assert_int_equal(range->parts[0].min_64, -128);
+    assert_int_equal(range->parts[0].max_64, -60);
+    assert_int_equal(range->parts[1].min_64, -1);
+    assert_int_equal(range->parts[1].max_64,  1);
+    assert_int_equal(range->parts[2].min_64, 60);
+    assert_int_equal(range->parts[2].max_64, 127);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "my_leaf", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "my_int_type", 0, 0, 1, 0, 0, 0);
+
+    /* TEST SUBTYPE RANGE */
+    schema = MODULE_CREATE_YANG("TS1",
+            "typedef my_int_type {"
+            "    type int8 {range \"-100 .. -60 | -1 .. 1 |  60 .. 127\";}"
+            "}"
+            "leaf my_leaf {type my_int_type {range \"min .. -60\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "my_leaf", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 1, NULL);
+    assert_int_equal(range->parts[0].min_64, -100);
+    assert_int_equal(range->parts[0].max_64, -60);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "my_leaf", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "my_int_type", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "min .. -60", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST SUBTYPE RANGE */
+    schema = MODULE_CREATE_YANG("TS2",
+            "typedef my_int_type {"
+            "    type int8 {range \"-100 .. -60 | -1 .. 1 |  60 .. 120\";}"
+            "}"
+            "leaf my_leaf {type my_int_type {range \"70 .. max\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "my_leaf", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 1, NULL);
+    assert_int_equal(range->parts[0].min_64, 70);
+    assert_int_equal(range->parts[0].max_64, 120);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "my_leaf", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "my_int_type", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "70 .. max", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST SUBTYPE RANGE */
+    schema = MODULE_CREATE_YANG("TS3",
+            "typedef my_int_type {"
+            "   type int8 {range \"-100 .. -60 | -1 .. 1 |  60 .. 127\";}"
+            "}"
+            "leaf my_leaf {type my_int_type {range \"-1 .. 1\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "my_leaf", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 1, NULL);
+    assert_int_equal(range->parts[0].min_64, -1);
+    assert_int_equal(range->parts[0].max_64, 1);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "my_leaf", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "my_int_type", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "-1 .. 1", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST SUBTYPE RANGE */
+    schema = MODULE_CREATE_YANG("TS4",
+            "typedef my_int_type {"
+            "   type int8 {range \"-128 .. -60 | -1 .. 1 |  60 .. 127\";}"
+            "}"
+            "leaf my_leaf {type my_int_type { "
+            "   range \"min .. -60 | -1 .. 1 |  60 .. max\";}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "my_leaf", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 3, NULL);
+    assert_int_equal(range->parts[0].min_64, -128);
+    assert_int_equal(range->parts[0].max_64, -60);
+    assert_int_equal(range->parts[1].min_64, -1);
+    assert_int_equal(range->parts[1].max_64,  1);
+    assert_int_equal(range->parts[2].min_64, 60);
+    assert_int_equal(range->parts[2].max_64, 127);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "my_leaf", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "my_int_type", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "min .. -60 | -1 .. 1 |  60 .. max", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST SUBTYPE ERROR min .. max */
+    schema = MODULE_CREATE_YANG("TS_ERR0",
+            "typedef my_int_type { type int8 {range \"-128 .. -60 | -1 .. 1 |  60 .. 127\";}}"
+            "leaf my_leaf {type my_int_type {range \"min .. max\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid range restriction - the derived restriction (min .. max) is not equally or more limiting.",
+            "/TS_ERR0:my_leaf");
+
+    /* TEST SUBTYPE ERROR -80 .. 80 */
+    schema = MODULE_CREATE_YANG("TS_ERR1",
+            "typedef my_int_type { type int8 {range \"-128 .. -60 | -1 .. 1 |  60 .. 127\";}}"
+            " leaf my_leaf {type my_int_type {range \"-80 .. 80\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid range restriction - the derived restriction (-80 .. 80) is not equally or more limiting.",
+            "/TS_ERR1:my_leaf");
+
+    /* TEST SUBTYPE ERROR 0 .. max */
+    schema = MODULE_CREATE_YANG("TS_ERR2",
+            "typedef my_int_type { type int8 {range \"-128 .. -60 | -1 .. 1 |  60 .. 127\";}}"
+            "leaf my_leaf {type my_int_type {range \"0 .. max\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid range restriction - the derived restriction (0 .. max) is not equally or more limiting.",
+            "/TS_ERR2:my_leaf");
+
+    /* TEST SUBTYPE ERROR -2 .. 2 */
+    schema = MODULE_CREATE_YANG("TS_ERR3",
+            "typedef my_int_type { type int8 {range \"-128 .. -60 | -1 .. 1 |  60 .. 127\";}}"
+            "leaf my_leaf {type my_int_type {range \"-2 .. 2\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid range restriction - the derived restriction (-2 .. 2) is not equally or more limiting.",
+            "/TS_ERR3:my_leaf");
+
+    /* TEST SUBTYPE ERROR -2 .. 2 */
+    schema = MODULE_CREATE_YANG("TS_ERR4",
+            "typedef my_int_type { type int8 {range \"-128 .. -60 | -1 .. 1 |  60 .. 127\";}}"
+            "leaf my_leaf {type my_int_type {range \"-100 .. -90 | 100 .. 128\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EDENIED);
+    CHECK_LOG_CTX("Invalid range restriction - value \"128\" does not fit the type limitations.",
+            "/TS_ERR4:my_leaf");
+
+    /*
+     * TEST DEFAULT VALUE
+     */
+    schema = MODULE_CREATE_YANG("DF0",
+            "leaf port {"
+            "    type int8 {range \"0 .. 50 | 127\";}"
+            "    default \"20\";"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x205, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, 1);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    CHECK_LYD_VALUE(*(lysc_leaf->dflt), INT8, "20", 20);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_64, 0);
+    assert_int_equal(range->parts[0].max_64, 50);
+    assert_int_equal(range->parts[1].min_64, 127);
+    assert_int_equal(range->parts[1].max_64, 127);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, "20");
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "0 .. 50 | 127", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST DEFAULT VALUE */
+    schema = MODULE_CREATE_YANG("DF1", "leaf port {type int8 {range \"0 .. 50 | 127\";}"
+            "default \"127\"; }");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x205, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, 1);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    CHECK_LYD_VALUE(*(lysc_leaf->dflt), INT8, "127", 127);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_64, 0);
+    assert_int_equal(range->parts[0].max_64, 50);
+    assert_int_equal(range->parts[1].min_64, 127);
+    assert_int_equal(range->parts[1].max_64, 127);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, "127");
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "0 .. 50 | 127", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST DEFAULT VALUE ERROR */
+    schema = MODULE_CREATE_YANG("TD_ERR0",
+            "leaf port {"
+            "   type int8 {range \"0 .. 50 | 127\";}"
+            "   default \"128\";"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Value \"128\" is out of type int8 min/max bounds.).",
+            "Schema location \"/TD_ERR0:port\".");
+
+    /* TEST DEFAULT VALUE ERROR */
+    schema = MODULE_CREATE_YANG("TD_ERR1",
+            "leaf port {"
+            "    type int8 {range \"0 .. 50 | 127\";}"
+            "    default \"-1\";"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Unsatisfied range - value \"-1\" is out of the allowed range.).",
+            "Schema location \"/TD_ERR1:port\".");
+
+    /* TEST DEFAULT VALUE ERROR */
+    schema = MODULE_CREATE_YANG("TD_ERR2",
+            "leaf port {"
+            "    type int8 {range \"0 .. 50 | 127\";}"
+            "    default \"60\";"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Unsatisfied range - value \"60\" is out of the allowed range.).",
+            "Schema location \"/TD_ERR2:port\".");
+
+    /* TEST DEFAULT VALUE ERROR */
+    schema = MODULE_CREATE_YANG("TD_ERR3",
+            "typedef my_int_type { type int8 {range \"60 .. 127\";} default \"127\";}"
+            "leaf my_leaf {type my_int_type {range \"70 .. 80\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Unsatisfied range - value \"127\" is out of the allowed range.).",
+            "Schema location \"/TD_ERR3:my_leaf\".");
+
+    /* TEST DEFAULT HEXADECIMAL */
+    schema = MODULE_CREATE_YANG("DF_HEX0",
+            "leaf port {"
+            "    type int8;"
+            "    default \"0xf\";"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x205, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, 1);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 0);
+    CHECK_LYD_VALUE(*(lysc_leaf->dflt), INT8, "15", 15);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, "0xf");
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "int8", 0, 0, 1, 0, 0, 0);
+
+    /* TEST DEFAULT HEXADECIMAL */
+    schema = MODULE_CREATE_YANG("DF_HEX1",
+            "leaf port {"
+            "    type int8;"
+            "    default \"-0xf\";"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x205, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, 1);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 0);
+    CHECK_LYD_VALUE(*(lysc_leaf->dflt), INT8, "-15", -15);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, "-0xf");
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "int8", 0, 0, 1, 0, 0, 0);
+
+    /* TEST DEFAULT HEXADECIMAL */
+    schema = MODULE_CREATE_YANG("DF_HEXI0",
+            "leaf port {"
+            "    type int8 {range \"0 .. 50 | 127\";}"
+            "    default \"+0x7F\";"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x205, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, 1);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    CHECK_LYD_VALUE(*(lysc_leaf->dflt), INT8, "127", 127);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_64, 0);
+    assert_int_equal(range->parts[0].max_64, 50);
+    assert_int_equal(range->parts[1].min_64, 127);
+    assert_int_equal(range->parts[1].max_64, 127);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, "+0x7F");
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "0 .. 50 | 127", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST DEFAULT HEXADECIMAL ERROR */
+    schema = MODULE_CREATE_YANG("DF_HEX2",
+            "leaf port {"
+            "    type int8;"
+            "    default \"0xff\";"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Value \"0xff\" is out of type int8 min/max bounds.).",
+            "Schema location \"/DF_HEX2:port\".");
+
+    /* TEST DEFAULT HEXADECIMAL ERROR */
+    schema = MODULE_CREATE_YANG("DF_HEX3",
+            "leaf port {"
+            "    type int8;"
+            "    default \"-0x81\";"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Value \"-0x81\" is out of type int8 min/max bounds.).",
+            "Schema location \"/DF_HEX3:port\".");
+
+    /* TEST DEFAULT HEXADECIMAL ERROR */
+    schema = MODULE_CREATE_YANG("DF_HEX4",
+            "leaf port {"
+            "    type int8;"
+            "    default \"0x80\";"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Value \"0x80\" is out of type int8 min/max bounds.).",
+            "Schema location \"/DF_HEX4:port\".");
+
+    /* TEST DEFAULT VALUE OCTAL */
+    schema = MODULE_CREATE_YANG("DF_OCT0",
+            "leaf port {"
+            "    type int8;"
+            "    default \"017\";"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x205, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, 1);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 0);
+    CHECK_LYD_VALUE(*(lysc_leaf->dflt), INT8, "15", 15);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, "017");
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "int8", 0, 0, 1, 0, 0, 0);
+
+    /* TEST DEFAULT VALUE OCTAL */
+    schema = MODULE_CREATE_YANG("DF_OCT1",
+            "leaf port {"
+            "    type int8;"
+            "    default \"-017\";"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x205, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, 1);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 0);
+    CHECK_LYD_VALUE(*(lysc_leaf->dflt), INT8, "-15", -15);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, "-017");
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "int8", 0, 0, 1, 0, 0, 0);
+
+    /* TEST DEFAULT VALUE OCTAL */
+    schema = MODULE_CREATE_YANG("DF_OCTI0",
+            "leaf port {"
+            "    type int8;"
+            "    default \"+017\";"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x205, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, 1);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 0);
+    CHECK_LYD_VALUE(*(lysc_leaf->dflt), INT8, "15", 15);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, "+017");
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "int8", 0, 0, 1, 0, 0, 0);
+
+    /* TEST DEFAULT VALUE OCTAL ERROR*/
+    schema = MODULE_CREATE_YANG("DF_OCT2",
+            "leaf port {"
+            "    type int8;"
+            "    default \"0377\";"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Value \"0377\" is out of type int8 min/max bounds.).",
+            "Schema location \"/DF_OCT2:port\".");
+
+    /* TEST DEFAULT VALUE OCTAL ERROR*/
+    schema = MODULE_CREATE_YANG("DF_OCT3",
+            "leaf port {"
+            "    type int8;"
+            "    default \"-0201\";"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Value \"-0201\" is out of type int8 min/max bounds.).",
+            "Schema location \"/DF_OCT3:port\".");
+
+    /* TEST DEFAULT VALUE OCTAL ERROR*/
+    schema = MODULE_CREATE_YANG("DF_OCT4",
+            "leaf port {"
+            "    type int8;"
+            "    default \"0200\";"
+            "}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Value \"0200\" is out of type int8 min/max bounds.).",
+            "Schema location \"/DF_OCT4:port\".");
+}
+
+static void
+test_schema_yin(void **state)
+{
+    const char *schema;
+    struct lys_module *mod;
+    struct lysc_node_leaf *lysc_leaf;
+    struct lysp_node_leaf *lysp_leaf;
+    struct lysc_range *range;
+
+    /* TEST T0 */
+    schema = MODULE_CREATE_YIN("T0", "<leaf name=\"port\"> <type name=\"int8\"/> </leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 0);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "int8", 0, 0, 1, 0, 0, 0);
+
+    /* TEST T1 */
+    schema = MODULE_CREATE_YIN("T1",
+            "<leaf name=\"port\"> "
+            "    <type name=\"int8\"> <range value = \"0 .. 10\"/>  </type>"
+            "</leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 1, NULL);
+    assert_int_equal(range->parts[0].min_64, 0);
+    assert_int_equal(range->parts[0].max_64, 10);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "0 .. 10", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST T1 */
+    schema = MODULE_CREATE_YIN("T2",
+            "<leaf name=\"port\"> "
+            "    <type name=\"int8\"> <range value = \"-127 .. 10 | max\"/>  </type>"
+            "</leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_64, -127);
+    assert_int_equal(range->parts[0].max_64, 10);
+    assert_int_equal(range->parts[1].min_64, 127);
+    assert_int_equal(range->parts[1].max_64, 127);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "-127 .. 10 | max", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST T2 */
+    schema = MODULE_CREATE_YIN("T3",
+            "<leaf name=\"port\"> "
+            "    <type name=\"int8\"> <range value =\"min .. 10 | 11 .. 12 | 30\"/> </type>"
+            "</leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 3, NULL);
+    assert_int_equal(range->parts[0].min_64, -128);
+    assert_int_equal(range->parts[0].max_64, 10);
+    assert_int_equal(range->parts[1].min_64, 11);
+    assert_int_equal(range->parts[1].max_64, 12);
+    assert_int_equal(range->parts[2].min_64, 30);
+    assert_int_equal(range->parts[2].max_64, 30);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "min .. 10 | 11 .. 12 | 30", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST ERROR -60 .. 0 | 0 .. 127 */
+    schema = MODULE_CREATE_YIN("TE0",
+            "<leaf name=\"port\"> "
+            "   <type name=\"int8\"> <range value = \"min .. 0 | 0 .. 12\"/>  </type>"
+            "</leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EEXIST);
+    CHECK_LOG_CTX("Invalid range restriction - values are not in ascending order (0).", "/TE0:port");
+
+    /* TEST ERROR 0 .. 128 */
+    schema = MODULE_CREATE_YIN("TE1",
+            "<leaf name=\"port\">"
+            "   <type name=\"int8\"> <range value = \"0 .. 128\"/>  </type>"
+            "</leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EDENIED);
+    CHECK_LOG_CTX("Invalid range restriction - value \"128\" does not fit the type limitations.", "/TE1:port");
+
+    /* TEST ERROR -129 .. 126 */
+    schema = MODULE_CREATE_YIN("TE2",
+            "<leaf name=\"port\"> "
+            "   <type name=\"int8\"> <range value =\"-129 .. 126\"/>  </type>"
+            "</leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EDENIED);
+    CHECK_LOG_CTX("Invalid range restriction - value \"-129\" does not fit the type limitations.", "/TE2:port");
+
+    /* TEST YIN */
+    schema = MODULE_CREATE_YIN("TS0",
+            "<typedef name= \"my_int_type\">"
+            "   <type name=\"int8\"> <range value = \"-127 .. 10 | max\"/>  </type>"
+            "</typedef>"
+            "<leaf name=\"my_leaf\"> <type name=\"my_int_type\"/> </leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "my_leaf", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_64, -127);
+    assert_int_equal(range->parts[0].max_64, 10);
+    assert_int_equal(range->parts[1].min_64, 127);
+    assert_int_equal(range->parts[1].max_64, 127);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "my_leaf", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "my_int_type", 0, 0, 1, 0, 0, 0);
+
+    /* TEST YIN */
+    schema = MODULE_CREATE_YIN("TS1",
+            "<typedef name= \"my_int_type\">"
+            "    <type name=\"int8\"> <range value = \"-127 .. 10 | 90 .. 100\"/>  </type>"
+            "</typedef>"
+            "<leaf name=\"port\"> <type name=\"my_int_type\"> <range value ="
+            " \"min .. -30 | 100 .. max\"/>  </type> </leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_64, -127);
+    assert_int_equal(range->parts[0].max_64, -30);
+    assert_int_equal(range->parts[1].min_64, 100);
+    assert_int_equal(range->parts[1].max_64, 100);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "my_int_type", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "min .. -30 | 100 .. max", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST ERROR */
+    schema = MODULE_CREATE_YIN("TS_ERR1",
+            "<typedef name= \"my_int_type\">"
+            "    <type name=\"int8\"> <range value = \"-127 .. 10 | 90 .. 100\"/>  </type>"
+            "</typedef>"
+            "<leaf name=\"port\">"
+            "    <type name=\"my_int_type\"> <range value = \"min .. max\"/>  </type>"
+            "</leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid range restriction - the derived restriction (min .. max) is not equally or more limiting.",
+            "/TS_ERR1:port");
+
+    /* TEST ERROR */
+    schema = MODULE_CREATE_YIN("TS_ERR2",
+            "<typedef name= \"my_int_type\">"
+            "    <type name=\"int8\"> <range value = \"-127 .. 10 | 90 .. 100\"/>  </type>"
+            "</typedef>"
+            "<leaf name=\"port\">"
+            "    <type name=\"my_int_type\"> <range value = \"5 .. 11\"/>  </type>"
+            "</leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid range restriction - the derived restriction (5 .. 11) is not equally or more limiting.",
+            "/TS_ERR2:port");
+
+    /* TEST DEFAULT VALUE */
+    schema = MODULE_CREATE_YIN("DF0",
+            "<leaf name=\"port\">"
+            "    <default value=\"12\" />"
+            "    <type name=\"int8\"> <range value = \"min .. 0 | 1 .. 12\"/>  </type>"
+            "</leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x205, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, 1);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 1);
+    CHECK_LYD_VALUE(*(lysc_leaf->dflt), INT8, "12", 12);
+    range = ((struct lysc_type_num *)lysc_leaf->type)->range;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_64, -128);
+    assert_int_equal(range->parts[0].max_64, 0);
+    assert_int_equal(range->parts[1].min_64, 1);
+    assert_int_equal(range->parts[1].max_64, 12);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, "12");
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x80, 0, 0, "int8", 0, 0, 1, 1, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.range, "min .. 0 | 1 .. 12", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST ERROR TD0 */
+    schema = MODULE_CREATE_YIN("TD_ERR0",
+            "<leaf name=\"port\">"
+            "    <default value=\"128\" />"
+            "    <type name=\"int8\"> <range value = \"min .. 0 | 1 .. 12\"/>  </type>"
+            "</leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Value \"128\" is out of type int8 min/max bounds.).",
+            "Schema location \"/TD_ERR0:port\".");
+
+    /* TEST ERROR TD1 */
+    schema = MODULE_CREATE_YIN("TD_ERR1",
+            "<leaf name=\"port\">"
+            "     <default value=\"13\" />"
+            "     <type name=\"int8\"> <range value = \"min .. 0 | 1 .. 12\"/>  </type>"
+            "</leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Unsatisfied range - value \"13\" is out of the allowed range.).",
+            "Schema location \"/TD_ERR1:port\".");
+
+    /* TEST ERROR TD1 */
+    schema = MODULE_CREATE_YIN("TD_ERR3",
+            "<typedef name= \"my_int_type\">"
+            "    <default value=\"10\" />"
+            "    <type name=\"int8\"> <range value = \"-127 .. 10 | max\"/> </type>"
+            "</typedef>"
+            "<leaf name=\"my_leaf\">"
+            "     <type name=\"my_int_type\">"
+            "     <range value = \"-127 .. -80\"/>  </type>"
+            "</leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Unsatisfied range - value \"10\" is out of the allowed range.).",
+            "Schema location \"/TD_ERR3:my_leaf\".");
+
+    /* TEST DEFAULT VALUE HEXADECIMAL */
+    schema = MODULE_CREATE_YIN("DF_HEX0",
+            "<leaf name=\"port\">"
+            "    <default value=\"+0xf\" />"
+            "    <type name=\"int8\" />"
+            "</leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x205, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, 1);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 0);
+    CHECK_LYD_VALUE(*(lysc_leaf->dflt), INT8, "15", 15);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, "+0xf");
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "int8", 0, 0, 1, 0, 0, 0);
+
+    /* TEST DEFAULT VALUE HEXADECIMAL */
+    schema = MODULE_CREATE_YIN("DF_HEX1",
+            "<leaf name=\"port\">"
+            "    <default value=\"-0xf\" />"
+            "    <type name=\"int8\" />"
+            "</leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x205, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, 1);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 0);
+    CHECK_LYD_VALUE(*(lysc_leaf->dflt), INT8, "-15", -15);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, "-0xf");
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "int8", 0, 0, 1, 0, 0, 0);
+
+    /* TEST DEFAULT VALUE HEXADECIMAL ERROR */
+    schema = MODULE_CREATE_YIN("DF_HEX2",
+            "<leaf name=\"port\">"
+            "    <default value=\"0xff\" />"
+            "    <type name=\"int8\" />"
+            "</leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Value \"0xff\" is out of type int8 min/max bounds.).",
+            "Schema location \"/DF_HEX2:port\".");
+
+    /* TEST DEFAULT VALUE HEXADECIMAL ERROR */
+    schema = MODULE_CREATE_YIN("DF_HEX2",
+            "<leaf name=\"port\">"
+            "    <default value=\"-0x81\" />"
+            "    <type name=\"int8\" />"
+            "</leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Value \"-0x81\" is out of type int8 min/max bounds.).",
+            "Schema location \"/DF_HEX2:port\".");
+
+    /* TEST DEFAULT VALUE HEXADECIMAL ERROR */
+    schema = MODULE_CREATE_YIN("DF_HEX4",
+            "<leaf name=\"port\">"
+            "    <default value=\"0x80\" />"
+            "    <type name=\"int8\" />"
+            "</leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Value \"0x80\" is out of type int8 min/max bounds.).",
+            "Schema location \"/DF_HEX4:port\".");
+
+    /* TEST DEFAULT VALUE OCTAL */
+    schema = MODULE_CREATE_YIN("DF_OCT0",
+            "<leaf name=\"port\">"
+            "    <default value=\"+017\" />"
+            "    <type name=\"int8\" />"
+            "</leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x205, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, 1);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 0);
+    CHECK_LYD_VALUE(*(lysc_leaf->dflt), INT8, "15", 15);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, "+017");
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "int8", 0, 0, 1, 0, 0, 0);
+
+    /* TEST DEFAULT VALUE OCTAL */
+    schema = MODULE_CREATE_YIN("DF_OCT1",
+            "<leaf name=\"port\">"
+            "    <default value=\"-017\" />"
+            "    <type name=\"int8\" />"
+            "</leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *)mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x205, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, 1);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_INT8, 0, 0);
+    CHECK_LYD_VALUE(*(lysc_leaf->dflt), INT8, "-15", -15);
+    lysp_leaf = (void *)mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, "-017");
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "int8", 0, 0, 1, 0, 0, 0);
+
+    /* TEST DEFAULT VALUE OCTAL ERROR */
+    schema = MODULE_CREATE_YIN("DF_OCT2",
+            "<leaf name=\"port\">"
+            "    <default value=\"-0201\" />"
+            "    <type name=\"int8\" />"
+            "</leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Value \"-0201\" is out of type int8 min/max bounds.).",
+            "Schema location \"/DF_OCT2:port\".");
+
+    /* TEST DEFAULT VALUE OCTAL ERROR */
+    schema = MODULE_CREATE_YIN("DF_OCT3",
+            "<leaf name=\"port\">"
+            "    <default value=\"0200\" />"
+            "    <type name=\"int8\" />"
+            "</leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid default - value does not fit the type (Value \"0200\" is out of type int8 min/max bounds.).",
+            "Schema location \"/DF_OCT3:port\".");
+}
+
+static void
+test_schema_print(void **state)
+{
+    const char *schema_yang, *schema_yin;
+    char *printed;
+    struct lys_module *mod;
+
+    /* test print yang to yin */
+    schema_yang = MODULE_CREATE_YANG("PRINT0",
+            "  description \"desc\";\n"
+            "leaf port {type int8 {range \"0 .. 50 | 127\";}  default \"20\";}");
+    schema_yin = MODULE_CREATE_YIN("PRINT0",
+            "\n"
+            "  <description>\n"
+            "    <text>desc</text>\n"
+            "  </description>\n"
+            "  <leaf name=\"port\">\n"
+            "    <type name=\"int8\">\n"
+            "      <range value=\"0 .. 50 | 127\"/>\n"
+            "    </type>\n"
+            "    <default value=\"20\"/>\n"
+            "  </leaf>\n");
+
+    UTEST_ADD_MODULE(schema_yang, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, schema_yin);
+    free(printed);
+
+    /* test print yin to yang */
+    schema_yang = MODULE_CREATE_YANG("PRINT1",
+            "\n"
+            "  description\n"
+            "    \"desc\";\n\n"
+            "  leaf port {\n"
+            "    type int8 {\n"
+            "      range \"0 .. 50 | 127\";\n"
+            "    }\n"
+            "    default \"20\";\n"
+            "  }\n");
+    schema_yin = MODULE_CREATE_YIN("PRINT1",
+            "<description>"
+            "    <text>desc</text>"
+            "</description>"
+            "<leaf name=\"port\">"
+            "    <type name=\"int8\">"
+            "        <range value=\"0 .. 50 | 127\"/>"
+            "    </type>"
+            "<default value=\"20\"/>"
+            "</leaf>");
+
+    UTEST_ADD_MODULE(schema_yin, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, schema_yang);
+    free(printed);
+
+    /* test print yang to yin */
+    schema_yang = MODULE_CREATE_YANG("PRINT2",
+            "  description \"desc\";\n"
+            "leaf port {type int8;}");
+    schema_yin = MODULE_CREATE_YIN("PRINT2",
+            "\n"
+            "  <description>\n"
+            "    <text>desc</text>\n"
+            "  </description>\n"
+            "  <leaf name=\"port\">\n"
+            "    <type name=\"int8\"/>\n"
+            "  </leaf>\n");
+
+    UTEST_ADD_MODULE(schema_yang, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, schema_yin);
+    free(printed);
+
+    /* test print yin to yang */
+    schema_yang = MODULE_CREATE_YANG("PRINT3",
+            "\n"
+            "  leaf port {\n"
+            "    type int8;\n"
+            "  }\n");
+    schema_yin = MODULE_CREATE_YIN("PRINT3",
+            "<leaf name=\"port\">"
+            "    <type name=\"int8\"/>"
+            "</leaf>");
+
+    UTEST_ADD_MODULE(schema_yin, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, schema_yang);
+    free(printed);
+}
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+    struct lyd_node *tree;
+    const char *data;
+    /* variable for default value test */
+    struct lysc_node_container *lysc_root;
+    struct lyd_node_inner *lyd_root;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "leaf port {type int8 {range \"0 .. 50 | 105\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_XML("defs", "+50", INT8, "50", 50);
+    TEST_SUCCESS_XML("defs", "50", INT8, "50", 50);
+    TEST_SUCCESS_XML("defs", "105", INT8, "105", 105);
+    TEST_SUCCESS_XML("defs", "0", INT8, "0", 0);
+    TEST_SUCCESS_XML("defs", "-0", INT8, "0", 0);
+    TEST_ERROR_XML("defs", "-1");
+    CHECK_LOG_CTX("Unsatisfied range - value \"-1\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 1.");
+    TEST_ERROR_XML("defs", "51");
+    CHECK_LOG_CTX("Unsatisfied range - value \"51\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 1.");
+    TEST_ERROR_XML("defs", "106");
+    CHECK_LOG_CTX("Unsatisfied range - value \"106\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 1.");
+    TEST_ERROR_XML("defs", "104");
+    CHECK_LOG_CTX("Unsatisfied range - value \"104\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 1.");
+    TEST_ERROR_XML("defs", "60");
+    CHECK_LOG_CTX("Unsatisfied range - value \"60\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 1.");
+
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type int8; }");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_XML("T0", "-128", INT8, "-128", -128);
+    TEST_SUCCESS_XML("T0", "-100", INT8, "-100", -100);
+    TEST_SUCCESS_XML("T0", "0", INT8, "0", 0);
+    TEST_SUCCESS_XML("T0", "10", INT8, "10", 10);
+    TEST_SUCCESS_XML("T0", "50", INT8, "50", 50);
+    TEST_SUCCESS_XML("T0", "127", INT8, "127", 127);
+    /* leading zeros */
+    TEST_SUCCESS_XML("T0", "-015", INT8, "-15", -15);
+    TEST_SUCCESS_XML("T0", "015", INT8, "15", 15);
+    TEST_ERROR_XML("T0", "-129");
+    CHECK_LOG_CTX("Value \"-129\" is out of type int8 min/max bounds.",
+            "Schema location \"/T0:port\", line number 1.");
+    TEST_ERROR_XML("T0", "128");
+    CHECK_LOG_CTX("Value \"128\" is out of type int8 min/max bounds.",
+            "Schema location \"/T0:port\", line number 1.");
+    TEST_ERROR_XML("T0", "256");
+    CHECK_LOG_CTX("Value \"256\" is out of type int8 min/max bounds.",
+            "Schema location \"/T0:port\", line number 1.");
+    TEST_ERROR_XML("T0", "1024");
+    CHECK_LOG_CTX("Value \"1024\" is out of type int8 min/max bounds.",
+            "Schema location \"/T0:port\", line number 1.");
+
+    /*
+     * default value
+     */
+    schema = MODULE_CREATE_YANG("T1",
+            "container cont {\n"
+            "    leaf port {type int8 {range \"0 .. 50 | 105\";} default \"20\";}"
+            "}");
+    /* check using default value */
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    data = "<cont xmlns=\"urn:tests:" "T1" "\">"  "</cont>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lysc_root = (void *)tree->schema;
+    CHECK_LYSC_NODE(lysc_root->child, NULL, 0, 0x205, 1, "port", 0, LYS_LEAF, 1, 0, 0, 0);
+    lyd_root = ((struct lyd_node_inner *)tree);
+    CHECK_LYD_NODE_TERM((struct lyd_node_term *)lyd_root->child, 1, 0, 0, 1, 1,
+            INT8, "20", 20);\
+    lyd_free_all(tree);
+
+    /* check rewriting default value */
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    data = "<cont xmlns=\"urn:tests:T1\">" "<port> 30 </port>" "</cont>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lysc_root = (void *)tree->schema;
+    CHECK_LYSC_NODE(lysc_root->child, NULL, 0, 0x205, 1, "port", 0, LYS_LEAF, 1, 0, 0, 0);
+    lyd_root = ((struct lyd_node_inner *)tree);
+    CHECK_LYD_NODE_TERM((struct lyd_node_term *)lyd_root->child, 0, 0, 0, 1, 1,
+            INT8, "30", 30);
+    lyd_free_all(tree);
+
+    /*
+     * specific error
+     */
+    schema = MODULE_CREATE_YANG("T2", "leaf port {type int8 {range \"0 .. 50 | 105\" {"
+            "        error-app-tag \"range-violation\";"
+            "        error-message \"invalid range of value\";"
+            "}}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_ERROR_XML("T2", "120");
+    CHECK_LOG_CTX_APPTAG("invalid range of value", "Schema location \"/T2:port\", line number 1.", "range-violation");
+}
+
+static void
+test_data_json(void **state)
+{
+    const char *schema;
+    /* value for default test */
+    struct lysc_node_container *lysc_root;
+    struct lyd_node_inner *lyd_root;
+    const char *data;
+    struct lyd_node *tree;
+
+    /* parsing json data */
+    schema = MODULE_CREATE_YANG("defs", "leaf port {type int8 {range \"0 .. 50 | 105\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_JSON("defs", "50", INT8, "50", 50);
+    TEST_SUCCESS_JSON("defs", "50", INT8, "50", 50);
+    TEST_SUCCESS_JSON("defs", "105", INT8, "105", 105);
+    TEST_SUCCESS_JSON("defs", "0", INT8, "0", 0);
+    TEST_SUCCESS_JSON("defs", "-0", INT8, "0", 0);
+    TEST_ERROR_JSON("defs", "-1");
+    CHECK_LOG_CTX("Unsatisfied range - value \"-1\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 1.");
+    TEST_ERROR_JSON("defs", "51");
+    CHECK_LOG_CTX("Unsatisfied range - value \"51\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 1.");
+    TEST_ERROR_JSON("defs", "106");
+    CHECK_LOG_CTX("Unsatisfied range - value \"106\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 1.");
+    TEST_ERROR_JSON("defs", "104");
+    CHECK_LOG_CTX("Unsatisfied range - value \"104\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 1.");
+    TEST_ERROR_JSON("defs", "60");
+    CHECK_LOG_CTX("Unsatisfied range - value \"60\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 1.");
+
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type int8; }");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_JSON("T0", "-128", INT8, "-128", -128);
+    TEST_SUCCESS_JSON("T0", "-100", INT8, "-100", -100);
+    TEST_SUCCESS_JSON("T0", "0", INT8, "0", 0);
+    TEST_SUCCESS_JSON("T0", "10", INT8, "10", 10);
+    TEST_SUCCESS_JSON("T0", "50", INT8, "50", 50);
+    TEST_SUCCESS_JSON("T0", "127", INT8, "127", 127);
+    /* leading zeros */
+    TEST_ERROR_JSON("T0", "015");
+    TEST_ERROR_JSON("T0", "-015");
+    TEST_ERROR_JSON("defs", "+50");
+    TEST_ERROR_JSON("T0", "-129");
+    CHECK_LOG_CTX("Value \"-129\" is out of type int8 min/max bounds.",
+            "Schema location \"/T0:port\", line number 1.");
+    TEST_ERROR_JSON("T0", "128");
+    CHECK_LOG_CTX("Value \"128\" is out of type int8 min/max bounds.",
+            "Schema location \"/T0:port\", line number 1.");
+    TEST_ERROR_JSON("T0", "256");
+    CHECK_LOG_CTX("Value \"256\" is out of type int8 min/max bounds.",
+            "Schema location \"/T0:port\", line number 1.");
+    TEST_ERROR_JSON("T0", "1024");
+    CHECK_LOG_CTX("Value \"1024\" is out of type int8 min/max bounds.",
+            "Schema location \"/T0:port\", line number 1.");
+
+    /*
+     * default value
+     */
+    schema = MODULE_CREATE_YANG("T1",
+            "container cont {\n"
+            "    leaf port {type int8 {range \"0 .. 50 | 105\";} default \"20\";}"
+            "}");
+    /* check using default value */
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    data = "{\"T1:cont\":{}}";
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lysc_root = (void *)tree->schema;
+    CHECK_LYSC_NODE(lysc_root->child, NULL, 0, 0x205, 1, "port", 0, LYS_LEAF, 1, 0, 0, 0);
+    lyd_root = ((struct lyd_node_inner *)tree);
+    CHECK_LYD_NODE_TERM((struct lyd_node_term *)lyd_root->child, 1, 0, 0, 1, 1,
+            INT8, "20", 20);\
+    lyd_free_all(tree);
+
+    /* check rewriting default value */
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    data = "{\"T1:cont\":{\":port\":30}}";
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lysc_root = (void *)tree->schema;
+    CHECK_LYSC_NODE(lysc_root->child, NULL, 0, 0x205, 1, "port", 0, LYS_LEAF, 1, 0, 0, 0);
+    lyd_root = ((struct lyd_node_inner *)tree);
+    CHECK_LYD_NODE_TERM((struct lyd_node_term *)lyd_root->child, 0, 0, 0, 1, 1,
+            INT8, "30", 30);
+    lyd_free_all(tree);
+
+}
+
+static void
+test_data_lyb(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("lyb", "leaf port {type int8;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_LYB("lyb", "port", "-128");
+    TEST_SUCCESS_LYB("lyb", "port", "0");
+    TEST_SUCCESS_LYB("lyb", "port", "1");
+    TEST_SUCCESS_LYB("lyb", "port", "127");
+}
+
+static void
+test_diff(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("defs", "leaf port {type int8 {range \"0 .. 50 | 120\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    struct lyd_node *model_1, *model_2;
+    struct lyd_node *diff;
+    const char *expected_string;
+    const char *data_1 = "<port xmlns=\"urn:tests:defs\"> 5 </port>";
+    const char *data_2 = "<port xmlns=\"urn:tests:defs\"> 6 </port>";
+    const char *diff_expected = "<port xmlns=\"urn:tests:defs\" "
+            "xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" "
+            "yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"5\">"
+            "6</port>";
+
+    LYD_TREE_CREATE(data_1, model_1);
+    LYD_TREE_CREATE(data_2, model_2);
+    assert_int_equal(LY_SUCCESS, lyd_diff_siblings(model_1, model_2, 0, &diff));
+    assert_non_null(diff);
+    CHECK_LYD_STRING_PARAM(diff, diff_expected, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    assert_int_equal(LY_SUCCESS, lyd_diff_apply_all(&model_1, diff));
+    CHECK_LYD(model_1, model_2);
+    lyd_free_all(model_1);
+    lyd_free_all(model_2);
+    lyd_free_all(diff);
+
+    /* create data from diff */
+    diff_expected = "<port xmlns=\"urn:tests:defs\" "
+            "xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" "
+            "yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"5\">"
+            "120</port>";
+    LYD_TREE_CREATE(diff_expected, diff);
+    data_1 = "<port xmlns=\"urn:tests:defs\"> 5 </port>";
+    LYD_TREE_CREATE(data_1, model_1);
+    assert_int_equal(LY_SUCCESS, lyd_diff_apply_all(&model_1, diff));
+    expected_string = "<port xmlns=\"urn:tests:defs\">120</port>";
+
+    CHECK_LYD_STRING_PARAM(model_1, expected_string, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    lyd_free_all(model_1);
+    lyd_free_all(diff);
+
+    /*
+     * check creating data out of range
+     */
+    diff_expected = "<port xmlns=\"urn:tests:defs\" "
+            "xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" "
+            "yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\"5\">"
+            "121</port>";
+    CHECK_PARSE_LYD_PARAM(diff_expected, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, model_1);
+    CHECK_LOG_CTX("Unsatisfied range - value \"121\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 1.");
+
+    /*
+     * diff from default value
+     */
+    data_1 = "<cont xmlns=\"urn:tests:T0\"></cont>";
+    data_2 = "<cont xmlns=\"urn:tests:T0\"> <port> 6 </port> </cont>";
+    diff_expected = "<cont xmlns=\"urn:tests:T0\""
+            " xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\""
+            " yang:operation=\"create\"><port>6</port></cont>";
+
+    schema = MODULE_CREATE_YANG("T0",
+            "container cont {\n"
+            "    leaf port {type int8; default \"20\";}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    LYD_TREE_CREATE(data_1, model_1);
+    LYD_TREE_CREATE(data_2, model_2);
+    assert_int_equal(LY_SUCCESS, lyd_diff_siblings(model_1, model_2, 0, &diff));
+    assert_non_null(diff);
+    CHECK_LYD_STRING_PARAM(diff, diff_expected, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    assert_int_equal(LY_SUCCESS, lyd_diff_apply_all(&model_1, diff));
+    CHECK_LYD(model_1, model_2);
+    lyd_free_all(diff);
+
+    lyd_free_all(model_1);
+    lyd_free_all(model_2);
+}
+
+static void
+test_print(void **state)
+{
+    const char *schema = MODULE_CREATE_YANG("defs", "leaf port {type int8 {range \"0 .. 50\";}}");
+    const char *expected_string;
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    struct lyd_node *model_1;
+    const char *data_1 = "<port xmlns=\"urn:tests:defs\"> 50 </port>";
+
+    LYD_TREE_CREATE(data_1, model_1);
+
+    /* XML */
+    expected_string = "<port xmlns=\"urn:tests:defs\">50</port>";
+    CHECK_LYD_STRING_PARAM(model_1, expected_string, LYD_XML, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+
+    /* JSON */
+    expected_string = "{\"defs:port\":50}";
+    CHECK_LYD_STRING_PARAM(model_1, expected_string, LYD_JSON, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+
+    lyd_free_all(model_1);
+}
+
+static void
+test_plugin_store(void **state)
+{
+    const char *val_text = NULL;
+    struct ly_err_item *err = NULL;
+    struct lys_module *mod;
+    struct lyd_value value = {0};
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_INT8]);
+    struct lysc_type *lysc_type;
+    LY_ERR ly_ret;
+    char *alloc;
+    const char *schema;
+    struct lysc_type lysc_type_test;
+
+    /* create schema. Prepare common used variables */
+    schema = MODULE_CREATE_YANG("defs", "leaf port {type int8 {range \"-50 .. 50\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+
+    /* check proper type */
+    assert_string_equal("libyang 2 - integers, version 1", type->id);
+
+    /* check store
+     * options = LY_TYPE_STORE_IMPLEMENT | LY_TYPE_STORE_DYNAMIC
+     * hint    = LYD_VALHINT_DECNUM, LYD_VALHINT_HEXNUM, LYD_VALHINT_OCTNUM
+     */
+    val_text = "20";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_DECNUM, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, INT8, "20", 20);
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    val_text = "-20";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_DECNUM, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, INT8, "-20", -20);
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    val_text = "0xf";
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_HEXNUM, NULL, &value, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    CHECK_LYD_VALUE(value, INT8, "15", 15);
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    val_text = "1B";
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_HEXNUM, NULL, &value, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    CHECK_LYD_VALUE(value, INT8, "27", 27);
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    val_text = "-0xf";
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_HEXNUM, NULL, &value, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    CHECK_LYD_VALUE(value, INT8, "-15", -15);
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    val_text = "027";
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_OCTNUM, NULL, &value, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    CHECK_LYD_VALUE(value, INT8, "23", 23);
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    val_text = "-027";
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_OCTNUM, NULL, &value, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    CHECK_LYD_VALUE(value, INT8, "-23", -23);
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    /*
+     * minor tests
+     * dynamic alocated input text
+     */
+    val_text = "0xa";
+    alloc = (char *)malloc(strlen(val_text) + 1);
+
+    memcpy(alloc, val_text, strlen(val_text) + 1);
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, alloc, strlen(val_text),
+            LYPLG_TYPE_STORE_DYNAMIC, LY_VALUE_XML, NULL, LYD_VALHINT_HEXNUM, NULL, &value, NULL, &err);
+    alloc = NULL;
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    CHECK_LYD_VALUE(value, INT8, "10", 10);
+    type->free(UTEST_LYCTX, &value);
+
+    /* wrong lysc_type of value */
+    lysc_type_test = *lysc_type;
+    lysc_type_test.basetype = LY_TYPE_UINT8;
+    val_text = "20";
+    ly_ret = type->store(UTEST_LYCTX, &lysc_type_test, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_HEXNUM, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EINT, ly_ret);
+
+    /*
+     * ERROR TESTS
+     */
+    val_text = "";
+    err = NULL;
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_HEXNUM, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EVALID, ly_ret);
+    ly_err_free(err);
+
+    val_text = "";
+    err = NULL;
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, 1,
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_HEXNUM, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EVALID, ly_ret);
+    ly_err_free(err);
+
+    val_text = "10 b";
+    err = NULL;
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_HEXNUM, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EVALID, ly_ret);
+    ly_err_free(err);
+
+    val_text = "a";
+    err = NULL;
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_DECNUM, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EVALID, ly_ret);
+    ly_err_free(err);
+}
+
+static void
+test_plugin_compare(void **state)
+{
+    struct ly_err_item *err = NULL;
+    struct lys_module *mod;
+    struct lyd_value values[10];
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_INT8]);
+    struct lysc_type *lysc_type;
+    LY_ERR ly_ret;
+    const char *schema;
+    /* different type */
+    const char *diff_type_text = "20";
+    struct lyd_value  diff_type_val;
+    struct lysc_type *diff_type;
+    /* Value which are going to be created to tested */
+    const char *val_init[] = {"20", "30", "-30", "0", "-0", "20"};
+
+    /* create schema. Prepare common used variables */
+    schema = MODULE_CREATE_YANG("T0", "typedef my_int_type {type int8; }"
+            "leaf p1 {type my_int_type;}"
+            "leaf p2 {type my_int_type;}"
+            "leaf p3 {type my_int_type{range \"0 .. 50\";}}"
+            "leaf p4 {type uint8;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+
+    /* CREATE VALUES */
+    for (unsigned int it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        ly_ret = type->store(UTEST_LYCTX, lysc_type, val_init[it], strlen(val_init[it]),
+                0, LY_VALUE_XML, NULL, LYD_VALHINT_DECNUM, NULL, &(values[it]), NULL, &err);
+        assert_int_equal(LY_SUCCESS, ly_ret);
+    }
+
+    /*
+     * BASIC TEST;
+     */
+    assert_int_equal(LY_SUCCESS, type->compare(&(values[0]), &(values[0])));
+    assert_int_equal(LY_SUCCESS, type->compare(&(values[0]), &(values[5])));
+    assert_int_equal(LY_ENOT, type->compare(&(values[0]), &(values[1])));
+    assert_int_equal(LY_ENOT, type->compare(&(values[1]), &(values[0])));
+    assert_int_equal(LY_ENOT, type->compare(&(values[1]), &(values[2])));
+    assert_int_equal(LY_SUCCESS, type->compare(&(values[3]), &(values[4])));
+
+    /*
+     * SAME TYPE but different node
+     */
+    diff_type_text = "20";
+    diff_type = ((struct lysc_node_leaf *)mod->compiled->data->next)->type;
+    ly_ret = diff_type->plugin->store(UTEST_LYCTX, diff_type, diff_type_text, strlen(diff_type_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_DECNUM, NULL, &diff_type_val, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    assert_int_equal(LY_SUCCESS, type->compare(&diff_type_val, &(values[0])));
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[1])));
+    type->free(UTEST_LYCTX, &(diff_type_val));
+
+    /*
+     * derivated type add some limitations
+     */
+    diff_type_text = "20";
+    diff_type = ((struct lysc_node_leaf *)mod->compiled->data->next->next)->type;
+    ly_ret = diff_type->plugin->store(UTEST_LYCTX, diff_type, diff_type_text, strlen(diff_type_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_DECNUM, NULL, &diff_type_val, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[0])));
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[1])));
+    type->free(UTEST_LYCTX, &(diff_type_val));
+
+    /*
+     * different type (UINT8)
+     */
+    diff_type_text = "20";
+    diff_type = ((struct lysc_node_leaf *)mod->compiled->data->next->next->next)->type;
+    ly_ret = diff_type->plugin->store(UTEST_LYCTX, diff_type, diff_type_text, strlen(diff_type_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_DECNUM, NULL, &diff_type_val, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[0])));
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[1])));
+    type->free(UTEST_LYCTX, &(diff_type_val));
+
+    /* delete values */
+    for (unsigned int it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        type->free(UTEST_LYCTX, &(values[it]));
+    }
+}
+
+static void
+test_plugin_print(void **state)
+{
+    struct ly_err_item *err = NULL;
+    struct lys_module *mod;
+    struct lyd_value values[10];
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_INT8]);
+    struct lysc_type *lysc_type;
+    LY_ERR ly_ret;
+    const char *schema;
+    /* Value which are going to be created to tested */
+    const char *val_init[] = {"20", "0x4A", "-f", "0", "-0", "-20"};
+
+    /* create schema. Prepare common used variables */
+    schema = MODULE_CREATE_YANG("defs", "leaf port {type int8;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+
+    /* CREATE VALUES */
+    for (unsigned int it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        ly_ret = type->store(UTEST_LYCTX, lysc_type, val_init[it], strlen(val_init[it]),
+                0, LY_VALUE_XML, NULL, LYD_VALHINT_HEXNUM, NULL, &(values[it]), NULL, &err);
+        assert_int_equal(LY_SUCCESS, ly_ret);
+    }
+
+    /* print value */
+    ly_bool dynamic = 0;
+
+    assert_string_equal("32", type->print(UTEST_LYCTX, &(values[0]), LY_VALUE_XML, NULL, &dynamic, NULL));
+    assert_string_equal("74", type->print(UTEST_LYCTX, &(values[1]), LY_VALUE_XML, NULL, &dynamic, NULL));
+    assert_string_equal("-15", type->print(UTEST_LYCTX, &(values[2]), LY_VALUE_XML, NULL, &dynamic, NULL));
+    assert_string_equal("0", type->print(UTEST_LYCTX, &(values[3]), LY_VALUE_XML, NULL, &dynamic, NULL));
+    assert_string_equal("0", type->print(UTEST_LYCTX, &(values[4]), LY_VALUE_XML, NULL, &dynamic, NULL));
+    assert_string_equal("-32", type->print(UTEST_LYCTX, &(values[5]), LY_VALUE_XML, NULL, &dynamic, NULL));
+
+    for (unsigned int it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        type->free(UTEST_LYCTX, &(values[it]));
+    }
+}
+
+static void
+test_plugin_dup(void **state)
+{
+    struct ly_err_item *err = NULL;
+    struct lys_module *mod;
+    struct lyd_value values[10];
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_INT8]);
+    struct lysc_type *lysc_type[2];
+    const char *schema;
+    LY_ERR ly_ret;
+    /* Value which are going to be tested */
+    const char *val_init[] = {"20", "0x4A", "-f", "0", "-0x80", "-20"};
+
+    /* create schema. Prepare common used variables */
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type int8;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type[0] = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+
+    schema = MODULE_CREATE_YANG("T1",
+            "typedef my_int_type {"
+            "    type int8 {range \"-100 .. 100\";} default 20;"
+            "}"
+            "leaf port {type my_int_type; }");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type[1] = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+
+    /* CREATE VALUES */
+    for (unsigned int it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        ly_ret = type->store(UTEST_LYCTX, lysc_type[it % 2], val_init[it], strlen(val_init[it]),
+                0, LY_VALUE_XML, NULL, LYD_VALHINT_HEXNUM, NULL, &(values[it]), NULL, &err);
+        assert_int_equal(LY_SUCCESS, ly_ret);
+    }
+
+    /* print duplicate value */
+    struct lyd_value dup_value;
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[0]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, INT8, "32", 0x20);
+    assert_ptr_equal(dup_value.realtype, values[0].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[1]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, INT8, "74", 0x4a);
+    assert_ptr_equal(dup_value.realtype, values[1].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[2]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, INT8, "-15", -0xf);
+    assert_ptr_equal(dup_value.realtype, values[2].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[3]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, INT8, "0", 0x0);
+    assert_ptr_equal(dup_value.realtype, values[3].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[4]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, INT8, "-128", -0x80);
+    assert_ptr_equal(dup_value.realtype, values[4].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[5]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, INT8, "-32", -0x20);
+    assert_ptr_equal(dup_value.realtype, values[5].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    /* error tests */
+    assert_int_equal(LY_EINVAL, type->duplicate(NULL, &(values[0]), &dup_value));
+
+    for (unsigned int it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        type->free(UTEST_LYCTX, &(values[it]));
+    }
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_schema_yang),
+        UTEST(test_schema_yin),
+        UTEST(test_schema_print),
+        UTEST(test_data_xml),
+        UTEST(test_data_json),
+        UTEST(test_data_lyb),
+        UTEST(test_diff),
+        UTEST(test_print),
+
+        UTEST(test_plugin_store),
+        UTEST(test_plugin_compare),
+        UTEST(test_plugin_print),
+        UTEST(test_plugin_dup),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/leafref.c b/tests/utests/types/leafref.c
new file mode 100644
index 0000000..c8d0cb6
--- /dev/null
+++ b/tests/utests/types/leafref.c
@@ -0,0 +1,222 @@
+/**
+ * @file leafref.c
+ * @author Adam Piecek <piecek@cesnet.cz>
+ * @brief test for built-in enumeration type
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML2(XML1, MOD_NAME, NAMESPACES, NODE_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = XML1 "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\" " NAMESPACES ">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 1, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML2(XML1, MOD_NAME, NAMESPACES, NODE_NAME, DATA, RET) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = XML1 "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\" " NAMESPACES ">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, RET, tree); \
+        assert_null(tree); \
+    }
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME1, DATA1, NODE_NAME2, DATA2) \
+    { \
+        struct lyd_node *tree_1; \
+        struct lyd_node *tree_2; \
+        char *xml_out, *data; \
+        data = "<" NODE_NAME1 " xmlns=\"urn:tests:" MOD_NAME "\"><name>" DATA1 "</name></" NODE_NAME1 ">" \
+        "<" NODE_NAME2 " xmlns=\"urn:tests:" MOD_NAME "\">" DATA2 "</" NODE_NAME2 ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema, *schema2, *schema3, *data;
+    struct lyd_node *tree;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "leaf lref {type leafref {path /leaflisttarget; require-instance true;}}"
+            "leaf lref2 {type leafref {path \"../list[id = current()/../str-norestr]/targets\"; require-instance true;}}"
+            "leaf str-norestr {type string;}"
+            "list list {key id; leaf id {type string;} leaf value {type string;} leaf-list targets {type string;}}"
+            "container cont {leaf leaftarget {type empty;}"
+            "    list listtarget {key id; max-elements 5;leaf id {type uint8;} leaf value {type string;}}"
+            "    leaf-list leaflisttarget {type uint8; max-elements 5;}}"
+            "leaf-list leaflisttarget {type string;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    schema2 = MODULE_CREATE_YANG("leafrefs", "import defs {prefix t;}"
+            "container c { container x {leaf x {type string;}} list l {"
+            "  key \"id value\"; leaf id {type string;} leaf value {type string;}"
+            "  leaf lr1 {type leafref {path \"../../../t:str-norestr\"; require-instance true;}}"
+            "  leaf lr2 {type leafref {path \"../../l[id=current()/../../../t:str-norestr]\" +"
+            "    \"[value=current()/../../../t:str-norestr]/value\"; require-instance true;}}"
+            "  leaf lr3 {type leafref {path \"/t:list[t:id=current ( )/../../x/x]/t:targets\";}}"
+            "}}");
+    UTEST_ADD_MODULE(schema2, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_XML2("<leaflisttarget xmlns=\"urn:tests:defs\">x</leaflisttarget>"
+            "<leaflisttarget xmlns=\"urn:tests:defs\">y</leaflisttarget>",
+            "defs", "xmlns:a=\"urn:tests:defs\"", "a:lref", "y", STRING, "y");
+
+    TEST_SUCCESS_XML2("<list xmlns=\"urn:tests:defs\"><id>x</id><targets>a</targets><targets>b</targets></list>"
+            "<list xmlns=\"urn:tests:defs\"><id>y</id><targets>x</targets><targets>y</targets></list>"
+            "<str-norestr xmlns=\"urn:tests:defs\">y</str-norestr>",
+            "defs", "xmlns:a=\"urn:tests:defs\"", "a:lref2", "y", STRING, "y");
+
+    data = "<str-norestr xmlns=\"urn:tests:defs\">y</str-norestr>"
+            "<c xmlns=\"urn:tests:leafrefs\"><l><id>x</id><value>x</value><lr1>y</lr1></l></c>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    CHECK_LYD_NODE_TERM((struct lyd_node_term *)lyd_child(lyd_child(tree->next->next)->next)->next->next,
+            0, 0, 0, 1, 1, STRING, "y");
+    lyd_free_all(tree);
+
+    data = "<list xmlns=\"urn:tests:defs\"><id>x</id><targets>a</targets><targets>b</targets></list>"
+            "<list xmlns=\"urn:tests:defs\"><id>y</id><targets>c</targets><targets>d</targets></list>"
+            "<c xmlns=\"urn:tests:leafrefs\"><x><x>y</x></x>"
+            "<l><id>x</id><value>x</value><lr3>c</lr3></l></c>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    CHECK_LYD_NODE_TERM((struct lyd_node_term *)lyd_child(lyd_child(tree->next->next->next)->next)->next->next,
+            0, 0, 0, 1, 1, STRING, "c");
+    lyd_free_all(tree);
+
+    schema3 = MODULE_CREATE_YANG("simple", "leaf l1 {type leafref {path \"../target\";}}"
+            "leaf target {type string;}");
+    UTEST_ADD_MODULE(schema3, LYS_IN_YANG, NULL, NULL);
+
+    data = "<l1 xmlns=\"urn:tests:simple\">&quot;*&quot;&#39;</l1>"
+            "<target xmlns=\"urn:tests:simple\">&quot;*&quot;&#39;</target>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_all(tree);
+
+    data = "<l1 xmlns=\"urn:tests:simple\">&quot;*&#39;&quot;</l1>"
+            "<target xmlns=\"urn:tests:simple\">&quot;*&#39;&quot;</target>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_all(tree);
+
+    /* invalid value */
+    TEST_ERROR_XML2("<leaflisttarget xmlns=\"urn:tests:defs\">x</leaflisttarget>",
+            "defs", "", "lref", "y", LY_EVALID);
+    CHECK_LOG_CTX_APPTAG("Invalid leafref value \"y\" - no target instance \"/leaflisttarget\" with the same value.",
+            "Data location \"/defs:lref\".", "instance-required");
+
+    TEST_ERROR_XML2("<list xmlns=\"urn:tests:defs\"><id>x</id><targets>a</targets><targets>b</targets></list>"
+            "<list xmlns=\"urn:tests:defs\"><id>y</id><targets>x</targets><targets>y</targets></list>"
+            "<str-norestr xmlns=\"urn:tests:defs\">y</str-norestr>",
+            "defs", "", "lref2", "b", LY_EVALID);
+    CHECK_LOG_CTX_APPTAG("Invalid leafref value \"b\" - "
+            "no target instance \"../list[id = current()/../str-norestr]/targets\" with the same value.",
+            "Data location \"/defs:lref2\".", "instance-required");
+
+    TEST_ERROR_XML2("<list xmlns=\"urn:tests:defs\"><id>x</id><targets>a</targets><targets>b</targets></list>"
+            "<list xmlns=\"urn:tests:defs\"><id>y</id><targets>x</targets><targets>y</targets></list>",
+            "defs", "", "lref2", "b", LY_EVALID);
+    CHECK_LOG_CTX_APPTAG("Invalid leafref value \"b\" - "
+            "no target instance \"../list[id = current()/../str-norestr]/targets\" with the same value.",
+            "Data location \"/defs:lref2\".", "instance-required");
+
+    TEST_ERROR_XML2("<str-norestr xmlns=\"urn:tests:defs\">y</str-norestr>",
+            "defs", "", "lref2", "b", LY_EVALID);
+    CHECK_LOG_CTX_APPTAG("Invalid leafref value \"b\" - "
+            "no target instance \"../list[id = current()/../str-norestr]/targets\" with the same value.",
+            "Data location \"/defs:lref2\".", "instance-required");
+
+    TEST_ERROR_XML2("<str-norestr xmlns=\"urn:tests:defs\">y</str-norestr>",
+            "leafrefs", "", "c", "<l><id>x</id><value>x</value><lr1>a</lr1></l>", LY_EVALID);
+    CHECK_LOG_CTX_APPTAG("Invalid leafref value \"a\" - no target instance \"../../../t:str-norestr\" with the same value.",
+            "Data location \"/leafrefs:c/l[id='x'][value='x']/lr1\".", "instance-required");
+
+    TEST_ERROR_XML2("<str-norestr xmlns=\"urn:tests:defs\">z</str-norestr>",
+            "leafrefs", "", "c", "<l><id>y</id><value>y</value></l><l><id>x</id><value>x</value><lr2>z</lr2></l>", LY_EVALID);
+    CHECK_LOG_CTX_APPTAG("Invalid leafref value \"z\" - no target instance \"../../l[id=current()/../../../t:str-norestr]"
+            "[value=current()/../../../t:str-norestr]/value\" with the same value.",
+            "Data location \"/leafrefs:c/l[id='x'][value='x']/lr2\".", "instance-required");
+
+    TEST_ERROR_XML2("",
+            "defs", "", "lref", "%n", LY_EVALID);
+    CHECK_LOG_CTX_APPTAG("Invalid leafref value \"%n\" - no target instance \"/leaflisttarget\" with the same value.",
+            "Data location \"/defs:lref\".", "instance-required");
+}
+
+static void
+test_data_json(void **state)
+{
+    const char *schema, *data;
+    struct lyd_node *tree;
+
+    /* json test */
+    schema = MODULE_CREATE_YANG("simple", "leaf l1 {type leafref {path \"../target\";}}"
+            "leaf target {type string;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    data = "{"
+            "  \"simple:l1\":\"\\\"*\\\"'\","
+            "  \"simple:target\":\"\\\"*\\\"'\""
+            "}";
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_all(tree);
+
+    data = "{"
+            "  \"simple:l1\":\"\\\"*'\\\"\","
+            "  \"simple:target\":\"\\\"*'\\\"\""
+            "}";
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lyd_free_all(tree);
+}
+
+static void
+test_plugin_lyb(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("lyb",
+            "list lst {key \"name\"; leaf name {type string;}}"
+            "leaf lref {type leafref {path \"../lst/name\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_LYB("lyb", "lst", "key_str", "lref", "key_str");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+        UTEST(test_data_json),
+        UTEST(test_plugin_lyb),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/string.c b/tests/utests/types/string.c
new file mode 100644
index 0000000..d232e9d
--- /dev/null
+++ b/tests/utests/types/string.c
@@ -0,0 +1,1410 @@
+/**
+ * @file string.c
+ * @author Radek Iša <isa@cesnet.cz>
+ * @brief test for string values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* GLOBAL INCLUDE HEADERS */
+#include <ctype.h>
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+#include "plugins_internal.h"
+
+#define MODULE_CREATE_YIN(MOD_NAME, NODES) \
+    "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" \
+    "<module name=\"" MOD_NAME "\"\n" \
+    "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n" \
+    "        xmlns:pref=\"urn:tests:" MOD_NAME "\">\n" \
+    "  <yang-version value=\"1.1\"/>\n" \
+    "  <namespace uri=\"urn:tests:" MOD_NAME "\"/>\n" \
+    "  <prefix value=\"pref\"/>\n" \
+    NODES \
+    "</module>\n"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, DATA, TYPE, ...)\
+    {\
+        struct lyd_node *tree;\
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>";\
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);\
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0);\
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *) tree, 0, 0, 0, 0, 1, TYPE,  __VA_ARGS__);\
+        lyd_free_all(tree);\
+    }
+
+#define TEST_SUCCESS_JSON(MOD_NAME, DATA, TYPE, ...)\
+    {\
+        struct lyd_node *tree;\
+        const char *data = "{\"" MOD_NAME ":port\":\"" DATA "\"}";\
+        CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);\
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0);\
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *) tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__);\
+        lyd_free_all(tree);\
+    }
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME, DATA) \
+    { \
+        struct lyd_node *tree_1; \
+        struct lyd_node *tree_2; \
+        char *xml_out, *data; \
+        data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, DATA)\
+    {\
+        struct lyd_node *tree;\
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>";\
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);\
+        assert_null(tree);\
+    }
+
+#define TEST_ERROR_JSON(MOD_NAME, DATA)\
+    {\
+        struct lyd_node *tree;\
+        const char *data = "{\"" MOD_NAME ":port\":\"" DATA "\"}";\
+        CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree);\
+        assert_null(tree);\
+    }
+
+static void
+test_schema_yang(void **state)
+{
+    const char *schema;
+    struct lys_module *mod;
+    struct lysc_node_leaf *lysc_leaf;
+    struct lysp_node_leaf *lysp_leaf;
+    struct lysc_pattern *pattern;
+    struct lysc_range *range;
+
+    /* TEST BASE STRING */
+    schema = MODULE_CREATE_YANG("base", "leaf port {type string;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_STRING, 0, 0);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "string", 0, 0, 1, 0, 0, 0);
+
+    /* TEST MODULE T0 */
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type string"
+            "{length \"10 .. max\";}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 1, 0);
+    range = ((struct lysc_type_str *)lysc_leaf->type)->length;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 1, NULL);
+    assert_int_equal(range->parts[0].min_u64, 10);
+    assert_true(range->parts[0].max_u64 == 18446744073709551615ull);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x10, 0, 1, "string", 0, 0, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.length, "10 .. max", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST MODULE T1 */
+    schema = MODULE_CREATE_YANG("T1", "leaf port {type string"
+            "{length \"min .. 20 | 50\";}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 1, 0);
+    range = ((struct lysc_type_str *)lysc_leaf->type)->length;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_u64, 0);
+    assert_int_equal(range->parts[0].max_u64, 20);
+    assert_int_equal(range->parts[1].min_u64, 50);
+    assert_int_equal(range->parts[1].max_u64, 50);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x10, 0, 1, "string", 0, 0, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.length, "min .. 20 | 50", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST MODULE T2 */
+    schema = MODULE_CREATE_YANG("T2", "leaf port {type string"
+            "{length \"10 .. 20 | 50 .. 100 | 255\";}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 1, 0);
+    range = ((struct lysc_type_str *)lysc_leaf->type)->length;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 3, NULL);
+    assert_int_equal(range->parts[0].min_u64, 10);
+    assert_int_equal(range->parts[0].max_u64, 20);
+    assert_int_equal(range->parts[1].min_u64, 50);
+    assert_int_equal(range->parts[1].max_u64, 100);
+    assert_int_equal(range->parts[2].min_u64, 255);
+    assert_int_equal(range->parts[2].max_u64, 255);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x10, 0, 1, "string", 0, 0, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.length, "10 .. 20 | 50 .. 100 | 255", NULL, NULL, NULL, 0, NULL);
+
+    /* SUBTYPE MODULE T2 */
+    schema = MODULE_CREATE_YANG("TS0",
+            "typedef my_type {"
+            "    type string {length \"10 .. 20 | 50 .. 100 | 255\";}"
+            "}"
+            "leaf port {type my_type {length \"min .. 15 | max\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 1, 0);
+    range = ((struct lysc_type_str *)lysc_leaf->type)->length;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_u64, 10);
+    assert_int_equal(range->parts[0].max_u64, 15);
+    assert_int_equal(range->parts[1].min_u64, 255);
+    assert_int_equal(range->parts[1].max_u64, 255);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x10, 0, 1, "my_type", 0, 0, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.length, "min .. 15 | max", NULL, NULL, NULL, 0, NULL);
+
+    /* ERROR TESTS NEGATIVE VALUE */
+    schema = MODULE_CREATE_YANG("ERR0", "leaf port {type string {length \"-1 .. 20\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EDENIED);
+    CHECK_LOG_CTX("Invalid length restriction - value \"-1\" does not fit the type limitations.", "/ERR0:port");
+
+    schema = MODULE_CREATE_YANG("ERR1", "leaf port {type string {length \"100 .. 18446744073709551616\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid length restriction - invalid value \"18446744073709551616\".", "/ERR1:port");
+
+    schema = MODULE_CREATE_YANG("ERR2", "leaf port {type string {length \"10 .. 20 | 20 .. 30\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EEXIST);
+    CHECK_LOG_CTX("Invalid length restriction - values are not in ascending order (20).", "/ERR2:port");
+
+    schema = MODULE_CREATE_YANG("ERR3",
+            "typedef my_type {"
+            "    type string;"
+            "}"
+            "leaf port {type my_type {length \"-1 .. 15\";}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EDENIED);
+    CHECK_LOG_CTX("Invalid length restriction - value \"-1\" does not fit the type limitations.", "/ERR3:port");
+
+    /*
+     * PATTERN
+     */
+    schema = MODULE_CREATE_YANG("TPATTERN_0", "leaf port {type string"
+            "{pattern '[a-zA-Z_][a-zA-Z0-9\\-_.]*';}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 1);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "[a-zA-Z_][a-zA-Z0-9\\-_.]*", 0, 0, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x40, 0, 0, "string", 0, 1, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[0]), "\x6" "[a-zA-Z_][a-zA-Z0-9\\-_.]*", NULL, NULL, NULL, 0, NULL);
+
+    schema = MODULE_CREATE_YANG("TPATTERN_1", "leaf port {type string{"
+            "   pattern '[a-zA-Z_][a-zA-Z0-9\\-_.]*' ;"
+            "   pattern 'abc.*' {modifier invert-match;}"
+            "}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 2);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "[a-zA-Z_][a-zA-Z0-9\\-_.]*", 0, 0, NULL);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[1];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "abc.*", 0, 0x1, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x40, 0, 0, "string", 0, 2, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[0]), "\x6" "[a-zA-Z_][a-zA-Z0-9\\-_.]*", NULL, NULL, NULL, 0, NULL);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[1]), "\x15" "abc.*", NULL, NULL, NULL, 0, NULL);
+
+    schema = MODULE_CREATE_YANG("TPATTERN_2",
+            "typedef my_type {"
+            "   type string{"
+            "       pattern '[a-zA-Z_][a-zA-Z0-9\\-_.]*' ;"
+            "       pattern 'abc.*' {modifier invert-match;}"
+            "}}"
+            "leaf port {type my_type {pattern 'bcd.*';}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 3);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "[a-zA-Z_][a-zA-Z0-9\\-_.]*", 0, 0, NULL);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[1];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "abc.*", 0, 0x1, NULL);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[2];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "bcd.*", 0, 0x0, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x40, 0, 0, "my_type", 0, 1, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[0]), "\x6" "bcd.*", NULL, NULL, NULL, 0, NULL);
+
+    /*
+     * TEST pattern error
+     */
+    schema = MODULE_CREATE_YANG("TPATTERN_ERR_0", "leaf port {type string {"
+            "pattern '[a-zA-Z_[a-zA-Z0-9\\-_.*';"
+            "}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Regular expression \"[a-zA-Z_[a-zA-Z0-9\\-_.*\" is not valid (\"\": missing terminating ] for character class).",
+            "/TPATTERN_ERR_0:port");
+
+    schema = MODULE_CREATE_YANG("TDEFAULT_0",
+            "typedef my_type {"
+            "   type string{"
+            "       pattern \"[a-zA-Z_][a-zA-Z0-9\\\\-_.]*\";"
+            "       length  \"2 .. 5 | 10\";"
+            "   }"
+            "   default \"a1i-j\";"
+            "}"
+            "leaf port {type my_type;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, "a1i-j");
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 1, 1);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "[a-zA-Z_][a-zA-Z0-9\\-_.]*", 0, 0, NULL);
+    range = ((struct lysc_type_str *)lysc_leaf->type)->length;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_u64, 2);
+    assert_int_equal(range->parts[0].max_u64, 5);
+    assert_int_equal(range->parts[1].min_u64, 10);
+    assert_int_equal(range->parts[1].max_u64, 10);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "my_type", 0, 0, 1, 0, 0, 0);
+
+    /* TEST pattern backslash
+     * The '[' character is escaped, thus character group is broken.
+     */
+
+    schema = MODULE_CREATE_YANG("TPATTERN_BC_ERR_1", "leaf port {type string {"
+            "pattern '\\[a]b';" /* pattern '\[a]b'; */
+            "}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Regular expression \"\\[a]b\" is not valid (\"]b\": character group doesn't begin with '[').",
+            "/TPATTERN_BC_ERR_1:port");
+
+    schema = MODULE_CREATE_YANG("TPATTERN_BC_ERR_2", "leaf port {type string {"
+            "pattern \"\\\\[a]b\";" /* pattern "\\[a]b"; */
+            "}}");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YANG, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Regular expression \"\\[a]b\" is not valid (\"]b\": character group doesn't begin with '[').",
+            "/TPATTERN_BC_ERR_2:port");
+
+    /* PATTERN AND LENGTH */
+    schema = MODULE_CREATE_YANG("TPL_0",
+            "typedef my_type {"
+            "   type string{"
+            "       length  \"2 .. 10\";"
+            "   }"
+            "}"
+            "leaf port {type my_type{ pattern \"[a-zA-Z_][a-zA-Z0-9\\\\-_.]*\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 1, 1);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "[a-zA-Z_][a-zA-Z0-9\\-_.]*", 0, 0, NULL);
+    range = ((struct lysc_type_str *)lysc_leaf->type)->length;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 1, NULL);
+    assert_int_equal(range->parts[0].min_u64, 2);
+    assert_int_equal(range->parts[0].max_u64, 10);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x40, 0, 0, "my_type", 0, 1, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[0]), "\x6" "[a-zA-Z_][a-zA-Z0-9\\-_.]*",
+            NULL, NULL, NULL, 0, NULL);
+}
+
+static void
+test_schema_yin(void **state)
+{
+    const char *schema;
+    struct lys_module *mod;
+    struct lysc_node_leaf *lysc_leaf;
+    struct lysp_node_leaf *lysp_leaf;
+    struct lysc_pattern *pattern;
+    struct lysc_range *range;
+
+    /* TEST BASE STRING */
+    schema = MODULE_CREATE_YIN("base", "<leaf name=\"port\"> <type name=\"string\"/> </leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_NUM((struct lysc_type_num *)lysc_leaf->type, LY_TYPE_STRING, 0, 0);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "string", 0, 0, 1, 0, 0, 0);
+
+    /* TEST MODULE T0 */
+    schema = MODULE_CREATE_YIN("T0", "<leaf name=\"port\"> <type name=\"string\">"
+            "<length value=\"10 .. max\"/>"
+            "</type> </leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 1, 0);
+    range = ((struct lysc_type_str *)lysc_leaf->type)->length;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 1, NULL);
+    assert_int_equal(range->parts[0].min_u64, 10);
+    assert_true(range->parts[0].max_u64 == 18446744073709551615ull);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x10, 0, 1, "string", 0, 0, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.length, "10 .. max", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST MODULE T1 */
+    schema = MODULE_CREATE_YIN("T1", "<leaf name=\"port\"> <type name=\"string\">"
+            "  <length value=\"min .. 20 | 50\"/>"
+            "</type></leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 1, 0);
+    range = ((struct lysc_type_str *)lysc_leaf->type)->length;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_u64, 0);
+    assert_int_equal(range->parts[0].max_u64, 20);
+    assert_int_equal(range->parts[1].min_u64, 50);
+    assert_int_equal(range->parts[1].max_u64, 50);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x10, 0, 1, "string", 0, 0, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.length, "min .. 20 | 50", NULL, NULL, NULL, 0, NULL);
+
+    /* TEST MODULE T2 */
+    schema = MODULE_CREATE_YIN("T2", "<leaf name=\"port\"> <type name=\"string\">"
+            "<length value=\"10 .. 20 | 50 .. 100 | 255\"/>"
+            "</type></leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 1, 0);
+    range = ((struct lysc_type_str *)lysc_leaf->type)->length;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 3, NULL);
+    assert_int_equal(range->parts[0].min_u64, 10);
+    assert_int_equal(range->parts[0].max_u64, 20);
+    assert_int_equal(range->parts[1].min_u64, 50);
+    assert_int_equal(range->parts[1].max_u64, 100);
+    assert_int_equal(range->parts[2].min_u64, 255);
+    assert_int_equal(range->parts[2].max_u64, 255);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x10, 0, 1, "string", 0, 0, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.length, "10 .. 20 | 50 .. 100 | 255", NULL, NULL, NULL, 0, NULL);
+
+    /* SUBTYPE MODULE T2 */
+    schema = MODULE_CREATE_YIN("TS0",
+            "<typedef name=\"my_type\">"
+            "    <type name=\"string\"> <length value=\"10 .. 20 | 50 .. 100 | 255\"/> </type>"
+            "</typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\">"
+            "    <length value=\"min .. 15 | max\"/>"
+            "</type> </leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 1, 0);
+    range = ((struct lysc_type_str *)lysc_leaf->type)->length;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_u64, 10);
+    assert_int_equal(range->parts[0].max_u64, 15);
+    assert_int_equal(range->parts[1].min_u64, 255);
+    assert_int_equal(range->parts[1].max_u64, 255);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x10, 0, 1, "my_type", 0, 0, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(lysp_leaf->type.length, "min .. 15 | max", NULL, NULL, NULL, 0, NULL);
+
+    /* ERROR TESTS NEGATIVE VALUE */
+    schema = MODULE_CREATE_YIN("ERR0", "<leaf name=\"port\"> <type name=\"string\">"
+            "<length value =\"-1 .. 20\"/> </type></leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EDENIED);
+    CHECK_LOG_CTX("Invalid length restriction - value \"-1\" does not fit the type limitations.", "/ERR0:port");
+
+    schema = MODULE_CREATE_YIN("ERR1", "<leaf name=\"port\"> <type name=\"string\">"
+            "<length value=\"100 .. 18446744073709551616\"/>"
+            "</type> </leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Invalid length restriction - invalid value \"18446744073709551616\".", "/ERR1:port");
+
+    schema = MODULE_CREATE_YIN("ERR2", "<leaf name=\"port\">"
+            "<type name=\"string\"> <length value=\"10 .. 20 | 20 .. 30\"/>"
+            "</type> </leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EEXIST);
+    CHECK_LOG_CTX("Invalid length restriction - values are not in ascending order (20).", "/ERR2:port");
+
+    schema = MODULE_CREATE_YIN("ERR3",
+            "<typedef name=\"my_type\"> <type name=\"string\"/> </typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\"> <length value=\"-1 .. 15\"/>"
+            "</type> </leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EDENIED);
+    CHECK_LOG_CTX("Invalid length restriction - value \"-1\" does not fit the type limitations.", "/ERR3:port");
+
+    /*
+     * PATTERN
+     */
+    schema = MODULE_CREATE_YIN("TPATTERN_0", "<leaf name=\"port\"> <type name=\"string\">"
+            "<pattern value=\"[a-zA-Z_][a-zA-Z0-9\\-_.]*\"/>"
+            "</type> </leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 1);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "[a-zA-Z_][a-zA-Z0-9\\-_.]*", 0, 0, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x40, 0, 0, "string", 0, 1, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[0]), "\x6" "[a-zA-Z_][a-zA-Z0-9\\-_.]*", NULL, NULL, NULL, 0, NULL);
+
+    schema = MODULE_CREATE_YIN("TPATTERN_1", "<leaf name=\"port\"> <type name=\"string\">"
+            "   <pattern value=\"[a-zA-Z_][a-zA-Z0-9\\-_.]*\"/>"
+            "   <pattern value=\"abc.*\"> <modifier value=\"invert-match\"/> </pattern>"
+            "</type> </leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 2);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "[a-zA-Z_][a-zA-Z0-9\\-_.]*", 0, 0, NULL);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[1];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "abc.*", 0, 0x1, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x40, 0, 0, "string", 0, 2, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[0]), "\x6" "[a-zA-Z_][a-zA-Z0-9\\-_.]*", NULL, NULL, NULL, 0, NULL);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[1]), "\x15" "abc.*", NULL, NULL, NULL, 0, NULL);
+
+    schema = MODULE_CREATE_YIN("TPATTERN_2",
+            "<typedef name=\"my_type\">"
+            "   <type name=\"string\">"
+            "       <pattern value=\"[a-zA-Z_][a-zA-Z0-9\\-_.]*\"/>"
+            "       <pattern value=\"abc.*\"> <modifier value=\"invert-match\"/> </pattern>"
+            "</type> </typedef>"
+            "<leaf name=\"port\"><type name=\"my_type\"> <pattern value=\"bcd.*\"/> </type></leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 3);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "[a-zA-Z_][a-zA-Z0-9\\-_.]*", 0, 0, NULL);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[1];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "abc.*", 0, 0x1, NULL);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[2];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "bcd.*", 0, 0x0, NULL);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x40, 0, 0, "my_type", 0, 1, 1, 0, 0, 0);
+    CHECK_LYSP_RESTR(&(lysp_leaf->type.patterns[0]), "\x6" "bcd.*", NULL, NULL, NULL, 0, NULL);
+
+    /*
+     * TEST pattern error
+     * */
+    schema = MODULE_CREATE_YIN("TPATTERN_ERR_0",
+            "<leaf name=\"port\"> <type name=\"string\">"
+            "   <pattern value=\"[a-zA-Z_][a-zA-Z0-9\\-_.*\"/>"
+            "</type> </leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+    CHECK_LOG_CTX("Regular expression \"[a-zA-Z_][a-zA-Z0-9\\-_.*\" is not valid (\"\": missing terminating ] for character class).",
+            "/TPATTERN_ERR_0:port");
+
+    /*
+     * DEFAUT VALUE
+     */
+    schema = MODULE_CREATE_YIN("TDEFAULT_0",
+            "<typedef name=\"my_type\">"
+            "   <type name=\"string\">"
+            "       <pattern value=\"[a-zA-Z_][a-zA-Z0-9\\-_.]*\"/>"
+            "       <length  value=\"2 .. 5 | 10\"/>"
+            "   </type>"
+            "   <default value=\"a1i-j\"/>"
+            "</typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\"/> </leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, "a1i-j");
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 1, 1);
+    pattern = ((struct lysc_type_str *)lysc_leaf->type)->patterns[0];
+    CHECK_LYSC_PATTERN(pattern, NULL, NULL, NULL, "[a-zA-Z_][a-zA-Z0-9\\-_.]*", 0, 0, NULL);
+    range = ((struct lysc_type_str *)lysc_leaf->type)->length;
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_u64, 2);
+    assert_int_equal(range->parts[0].max_u64, 5);
+    assert_int_equal(range->parts[1].min_u64, 10);
+    assert_int_equal(range->parts[1].max_u64, 10);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "my_type", 0, 0, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YIN("TDEFAULT_1",
+            "<typedef name=\"my_type\">"
+            "   <type name=\"string\">"
+            "   </type>"
+            "   <default value=\"a1i-j&lt;\"/>"
+            "</typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\"/> </leaf>");
+    UTEST_ADD_MODULE(schema, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    lysc_leaf = (void *) mod->compiled->data;
+    CHECK_LYSC_NODE_LEAF(lysc_leaf, NULL, 0, 0x5, 1, "port", 0, 0, 0, NULL, 0, 0, NULL, "a1i-j<");
+    CHECK_LYSC_TYPE_STR((struct lysc_type_str *)lysc_leaf->type, 0, 0, 0);
+    CHECK_LYSC_RANGE(range, NULL, NULL, NULL, 0, 2, NULL);
+    assert_int_equal(range->parts[0].min_u64, 2);
+    assert_int_equal(range->parts[0].max_u64, 5);
+    assert_int_equal(range->parts[1].min_u64, 10);
+    assert_int_equal(range->parts[1].max_u64, 10);
+    lysp_leaf = (void *) mod->parsed->data;
+    CHECK_LYSP_NODE_LEAF(lysp_leaf, NULL, 0, 0x0, 0, "port", 0, 0, NULL, 0, 0, NULL, NULL);
+    CHECK_LYSP_TYPE(&(lysp_leaf->type), 0, 0, 0, 0, 0, 0x0, 0, 0, "my_type", 0, 0, 1, 0, 0, 0);
+
+    schema = MODULE_CREATE_YIN("TDEFAULT_2",
+            "<typedef name=\"my_type\">"
+            "   <type name=\"string\">"
+            "       <length  value=\"2\"/>"
+            "   </type>"
+            "   <default value=\"a1i-j&lt;\"/>"
+            "</typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\"/> </leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+
+    schema = MODULE_CREATE_YIN("TDEFAULT_2",
+            "<typedef name=\"my_type\">"
+            "   <type name=\"string\">"
+            "       <length  value=\"2\"/>"
+            "   </type>"
+            "   <default value=\"a1i-j&lt;\"/>"
+            "</typedef>"
+            "<leaf name=\"port\"> <type name=\"my_type\"/> </leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+
+    schema = MODULE_CREATE_YIN("TDEFAULT_3",
+            "<typedef name=\"my_type\">"
+            "   <default value=\"a1i-j&lt;\"/>"
+            "   <type name=\"string\">"
+            "</type> </typedef>"
+            "<leaf name=\"port\"><type name=\"my_type\"> <pattern value=\"bcd.*\"/> </type></leaf>");
+    UTEST_INVALID_MODULE(schema, LYS_IN_YIN, NULL, LY_EVALID);
+
+}
+
+static void
+test_schema_print(void **state)
+{
+    const char *schema_yang, *schema_yin;
+    char *printed;
+    struct lys_module *mod;
+
+    /* test print yang to yin */
+    schema_yang = MODULE_CREATE_YANG("PRINT0",
+            "leaf port {type string {"
+            "length \"min .. 20 | 50\";"
+            "pattern \"p.*\\\\\\\\\";"
+            "pattern 'p4.*' {modifier invert-match;}"
+            "}default \"p\\\"<\\\\\";}");
+    schema_yin = MODULE_CREATE_YIN("PRINT0",
+            "  <leaf name=\"port\">\n"
+            "    <type name=\"string\">\n"
+            "      <length value=\"min .. 20 | 50\"/>\n"
+            "      <pattern value=\"p.*\\\\\"/>\n"
+            "      <pattern value=\"p4.*\">\n"
+            "        <modifier value=\"invert-match\"/>\n"
+            "      </pattern>\n"
+            "    </type>\n"
+            "    <default value=\"p&quot;&lt;\\\"/>\n"
+            "  </leaf>\n");
+
+    UTEST_ADD_MODULE(schema_yang, LYS_IN_YANG, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YIN, 0));
+    assert_string_equal(printed, schema_yin);
+    free(printed);
+
+    /* test print yin to yang */
+    schema_yang = MODULE_CREATE_YANG("PRINT1",
+            "\n"
+            "  leaf port {\n"
+            "    type string {\n"
+            "      length \"min .. 20 | 50\";\n"
+            "      pattern \"p.*\\\\\\\\\";\n"
+            "      pattern \"p4.*\" {\n"
+            "        modifier invert-match;\n"
+            "      }\n"
+            "    }\n"
+            "    default \"p\\\"<\\\\\";\n"
+            "  }\n");
+    schema_yin = MODULE_CREATE_YIN("PRINT1",
+            "  <leaf name=\"port\">\n"
+            "    <type name=\"string\">\n"
+            "      <length value=\"min .. 20 | 50\"/>\n"
+            "      <pattern value=\"p.*\\\\\"/>\n"
+            "      <pattern value=\"p4.*\">\n"
+            "        <modifier value=\"invert-match\"/>\n"
+            "      </pattern>\n"
+            "    </type>\n"
+            "    <default value=\"p&quot;&lt;\\\"/>\n"
+            "  </leaf>\n");
+
+    UTEST_ADD_MODULE(schema_yin, LYS_IN_YIN, NULL, &mod);
+    assert_non_null(mod);
+    assert_int_equal(LY_SUCCESS, lys_print_mem(&printed, mod, LYS_OUT_YANG, 0));
+    assert_string_equal(printed, schema_yang);
+    free(printed);
+}
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+    struct lyd_node *tree;
+    const char *data;
+    struct lysc_node_container *lysc_root;
+    struct lyd_node_inner *lyd_root;
+
+    /* NO RESTRICTION TESTS */
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type string;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    /* space on start and new line */
+    TEST_SUCCESS_XML("T0", " 50  \n\t 64", STRING, " 50  \n\t 64");
+    /* nuber as string */
+    TEST_SUCCESS_XML("T0", "50", STRING, "50");
+    TEST_SUCCESS_XML("T0", "+250", STRING, "+250");
+    /* references */
+    TEST_SUCCESS_XML("T0", "&quot;", STRING, "\"");
+    TEST_SUCCESS_XML("T0", "|&amp;|", STRING, "|&|");
+    TEST_SUCCESS_XML("T0", "&apos;", STRING, "'");
+    TEST_SUCCESS_XML("T0", "&lt;", STRING, "<");
+    TEST_SUCCESS_XML("T0", "&gt;", STRING, ">");
+    TEST_SUCCESS_XML("T0", "&#x42f;&#1071;", STRING, "ЯЯ");
+    /* special characters */
+    TEST_SUCCESS_XML("T0", "\"", STRING, "\"");
+    TEST_SUCCESS_XML("T0", "'", STRING, "'");
+    TEST_SUCCESS_XML("T0", ">", STRING, ">");
+    TEST_SUCCESS_XML("T0", "", STRING, "");
+    TEST_SUCCESS_XML("T0", "&amp;&lt;lt;", STRING, "&<lt;");
+    /* CDATA IS NOT SUPPORTED
+     * TEST_SUCCESS_XML("T2", "<![CDATA[<greeting>Hello, world! & Wecome</greeting>]]>", STRING,
+     *                        "<greeting>Hello, world! & Wecome</greeting>");
+     *  COMMENT IN MIDDLE OF TEXT IS NOT SUPPORTED
+     *  TEST_SUCCESS_XML("T2", "this isn't <!--' this is comment '-->comment",
+     *                 STRING, "this isn't comment");
+     */
+
+    /* error */
+    TEST_ERROR_XML("T0", "< df");
+    CHECK_LOG_CTX("Child element \"df\" inside a terminal node \"port\" found.",
+            "Data location \"/T0:port\", line number 1.");
+    TEST_ERROR_XML("T0", "&text;");
+    CHECK_LOG_CTX("Entity reference \"&text;</po\" not supported, only predefined references allowed.", "Line number 1.");
+    TEST_ERROR_XML("T0", "\"&#x8;\"");
+    CHECK_LOG_CTX("Invalid character reference \"&#x8;\"</port\" (0x00000008).", "Line number 1.");
+
+    /* TEST INVERTED PATTERN ADN LENGTH */
+    schema = MODULE_CREATE_YANG("T1", "leaf port {type string {"
+            "       length  \"5 .. 10 | 20\";"
+            "       pattern '[a-zA-Z_][a-zA-Z0-9\\-_.<]*' ;"
+            "       pattern 'p4.*' {modifier invert-match;"
+            "           error-app-tag \"pattern-violation\"; error-message \"invalid pattern of value\";}"
+            "}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    /* inverted value */
+    TEST_SUCCESS_XML("T1", "abcde",    STRING, "abcde");
+    TEST_SUCCESS_XML("T1", "abcde&lt;", STRING, "abcde<");
+    TEST_ERROR_XML("T1", "p4abc");
+    CHECK_LOG_CTX_APPTAG("invalid pattern of value", "Schema location \"/T1:port\", line number 1.", "pattern-violation");
+    /* size 20 */
+    TEST_SUCCESS_XML("T1", "ahojahojahojahojahoj", STRING, "ahojahojahojahojahoj");
+    TEST_SUCCESS_XML("T1", "abc-de", STRING, "abc-de");
+    /* ERROR LENGTH  */
+    TEST_ERROR_XML("T1", "p4a&lt;");
+    CHECK_LOG_CTX("Unsatisfied length - string \"p4a<\" length is not allowed.",
+            "Schema location \"/T1:port\", line number 1.");
+
+    /* TEST DEFAULT VALUE */
+    schema = MODULE_CREATE_YANG("T2",
+            "container cont {\n"
+            "    leaf port {type string {length \"0 .. 50 | 105\";} default \"test\";}"
+            "}");
+    /* using default value */
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    data = "<cont xmlns=\"urn:tests:" "T2" "\">"  "</cont>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lysc_root = (void *)tree->schema;
+    CHECK_LYSC_NODE(lysc_root->child, NULL, 0, 0x205, 1, "port", 0, LYS_LEAF, 1, 0, 0, 0);
+    lyd_root = ((struct lyd_node_inner *) tree);
+    CHECK_LYD_NODE_TERM((struct lyd_node_term *) lyd_root->child, 1, 0, 0, 1, 1,
+            STRING, "test");\
+    lyd_free_all(tree);
+
+    /* rewriting default value */
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    data = "<cont xmlns=\"urn:tests:T2\">" "<port> 52 </port>" "</cont>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lysc_root = (void *)tree->schema;
+    CHECK_LYSC_NODE(lysc_root->child, NULL, 0, 0x205, 1, "port", 0, LYS_LEAF, 1, 0, 0, 0);
+    lyd_root = ((struct lyd_node_inner *) tree);
+    CHECK_LYD_NODE_TERM((struct lyd_node_term *) lyd_root->child, 0, 0, 0, 1, 1,
+            STRING, " 52 ");
+    lyd_free_all(tree);
+
+    /* WHIT STRING TEST */
+    schema = MODULE_CREATE_YANG("T_WHITE", "leaf port {type string;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_XML("T_WHITE", " \n\t", STRING, " \n\t");
+    TEST_SUCCESS_XML("T_WHITE", " \n&lt;\t", STRING, " \n<\t");
+
+    /* UTF-8 length and pattern*/
+    schema = MODULE_CREATE_YANG("T_UTF8", "leaf port {type string {"
+            "       length  \"5 .. 10\";"
+            "       pattern '[€]{5,7}' ;"
+            "}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_XML("T_UTF8", "€€€€€",    STRING, "€€€€€");
+    TEST_ERROR_XML("T_UTF8", "€€€");
+    CHECK_LOG_CTX("Unsatisfied length - string \"€€€\" length is not allowed.",
+            "Schema location \"/T_UTF8:port\", line number 1.");
+    TEST_ERROR_XML("T_UTF8", "€€€€€€€€");
+    CHECK_LOG_CTX("Unsatisfied pattern - \"€€€€€€€€\" does not conform to \"[€]{5,7}\".",
+            "Schema location \"/T_UTF8:port\", line number 1.");
+
+    /* ANCHOR TEST ^$ is implicit */
+    schema = MODULE_CREATE_YANG("T_ANCHOR", "leaf port {type string {"
+            "       pattern 'a.*b' ;"
+            "}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_ERROR_XML("T_ANCHOR", "abc");
+    CHECK_LOG_CTX("Unsatisfied pattern - \"abc\" does not conform to \"a.*b\".",
+            "Schema location \"/T_ANCHOR:port\", line number 1.");
+    TEST_ERROR_XML("T_ANCHOR", "cab");
+    CHECK_LOG_CTX("Unsatisfied pattern - \"cab\" does not conform to \"a.*b\".",
+            "Schema location \"/T_ANCHOR:port\", line number 1.");
+}
+
+static void
+test_data_json(void **state)
+{
+    const char *schema;
+    struct lyd_node *tree;
+    const char *data;
+    struct lysc_node_container *lysc_root;
+    struct lyd_node_inner *lyd_root;
+
+    /* NO RESTRICTION TESTS */
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type string;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_JSON("T0", "this is text", STRING, "this is text");
+    /* space on start and new line */
+    TEST_SUCCESS_JSON("T0", " 50  \\n\\t 64", STRING, " 50  \n\t 64");
+    /* nuber as string */
+    TEST_SUCCESS_JSON("T0", "50", STRING, "50");
+    TEST_SUCCESS_JSON("T0", "+250", STRING, "+250");
+    /* references */
+    TEST_SUCCESS_JSON("T0", "\\\"", STRING, "\"");
+    TEST_SUCCESS_JSON("T0", "|&|", STRING, "|&|");
+    TEST_SUCCESS_JSON("T0", "<", STRING, "<");
+    TEST_SUCCESS_JSON("T0", ">", STRING, ">");
+    TEST_SUCCESS_JSON("T0", "\\u042F", STRING, "Я");
+    TEST_SUCCESS_JSON("T0", "\\u042FFF", STRING, "ЯFF");
+    /* special characters */
+    TEST_SUCCESS_JSON("T0", "'", STRING, "'");
+    TEST_SUCCESS_JSON("T0", ">", STRING, ">");
+    TEST_SUCCESS_JSON("T0", "", STRING, "");
+    TEST_SUCCESS_JSON("T0", "\\\" \\\\ \\r \\/ \\n \\t \\u20ac", STRING, "\" \\ \r / \n \t €");
+
+    /* ERROR invalid json string */
+    TEST_ERROR_JSON("T0", "\n");
+    CHECK_LOG_CTX("Invalid character in JSON string \"\n\" (0x0000000a).",
+            "Line number 1.");
+    /* backspace and form feed are valid JSON escape sequences, but the control characters they represents are not allowed values for YANG string type */
+    TEST_ERROR_JSON("T0", "\\b");
+    CHECK_LOG_CTX("Invalid character reference \"\\b\" (0x00000008).", "Line number 1.");
+
+    TEST_ERROR_JSON("T0", "\\f");
+    CHECK_LOG_CTX("Invalid character reference \"\\f\" (0x0000000c).", "Line number 1.");
+
+    TEST_ERROR_JSON("T0", "\"");
+    CHECK_LOG_CTX("Unexpected character \"\"\" after JSON string.", "Line number 1.");
+
+    TEST_ERROR_JSON("T0", "aabb \\x");
+    CHECK_LOG_CTX("Invalid character escape sequence \\x.", "Line number 1.");
+
+    /* TEST INVERTED PATTERN ADN LENGTH */
+    schema = MODULE_CREATE_YANG("T1", "leaf port {type string {"
+            "       length  \"5 .. 10 | 20\";"
+            "       pattern '[a-zA-Z_][a-zA-Z0-9\\-_.<]*\\n[a-zA-Z0-9\\-_.<]*' ;"
+            "       pattern 'p4.*\\n' {modifier invert-match;}"
+            "}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    /* inverted value */
+    TEST_SUCCESS_JSON("T1", "a\\nbcde",     STRING, "a\nbcde");
+    TEST_ERROR_JSON("T1", "p4abc\\n");
+    CHECK_LOG_CTX("Unsatisfied pattern - \"p4abc\n\" does not conform to inverted \"p4.*\\n\".",
+            "Schema location \"/T1:port\", line number 1.");
+    /* size 20 */
+    TEST_SUCCESS_JSON("T1", "ahojahojaho\\njahojaho", STRING, "ahojahojaho\njahojaho");
+    TEST_SUCCESS_JSON("T1", "abc\\n-de", STRING, "abc\n-de");
+    /* ERROR LENGTH  */
+    TEST_ERROR_JSON("T1", "p4a\u042F");
+    CHECK_LOG_CTX("Unsatisfied length - string \"p4aЯ\" length is not allowed.",
+            "Schema location \"/T1:port\", line number 1.");
+
+    /* TEST DEFAULT VALUE */
+    schema = MODULE_CREATE_YANG("T_DEFAULT2",
+            "container cont {\n"
+            "    leaf port {type string {length \"0 .. 50 | 105\";} default \"test\";}"
+            "}");
+    /* using default value */
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    data = "{\"T_DEFAULT2:cont\":{}}";
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lysc_root = (void *)tree->schema;
+    CHECK_LYSC_NODE(lysc_root->child, NULL, 0, 0x205, 1, "port", 0, LYS_LEAF, 1, 0, 0, 0);
+    lyd_root = ((struct lyd_node_inner *) tree);
+    CHECK_LYD_NODE_TERM((struct lyd_node_term *) lyd_root->child, 1, 0, 0, 1, 1,
+            STRING, "test");\
+    lyd_free_all(tree);
+
+    /* rewriting default value */
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    data = "{\"T_DEFAULT2:cont\":{\":port\": \" 52 \"}}";\
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+    lysc_root = (void *)tree->schema;
+    CHECK_LYSC_NODE(lysc_root->child, NULL, 0, 0x205, 1, "port", 0, LYS_LEAF, 1, 0, 0, 0);
+    lyd_root = ((struct lyd_node_inner *) tree);
+    CHECK_LYD_NODE_TERM((struct lyd_node_term *) lyd_root->child, 0, 0, 0, 1, 1,
+            STRING, " 52 ");
+    lyd_free_all(tree);
+
+    /* UTF-8 length and pattern*/
+    schema = MODULE_CREATE_YANG("T_UTF8", "leaf port {type string {"
+            "       length  \"5 .. 10\";"
+            "       pattern '[€]{5,7}' ;"
+            "}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_JSON("T_UTF8", "€€€€€",    STRING, "€€€€€");
+    TEST_ERROR_JSON("T_UTF8", "€€€");
+    CHECK_LOG_CTX("Unsatisfied length - string \"€€€\" length is not allowed.",
+            "Schema location \"/T_UTF8:port\", line number 1.");
+    TEST_ERROR_JSON("T_UTF8", "€€€€€€€€");
+    CHECK_LOG_CTX("Unsatisfied pattern - \"€€€€€€€€\" does not conform to \"[€]{5,7}\".",
+            "Schema location \"/T_UTF8:port\", line number 1.");
+
+    /* ANCHOR TEST ^$ is implicit */
+    schema = MODULE_CREATE_YANG("T_ANCHOR", "leaf port {type string {"
+            "       pattern 'a.*b' ;"
+            "}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_ERROR_JSON("T_ANCHOR", "abc");
+    CHECK_LOG_CTX("Unsatisfied pattern - \"abc\" does not conform to \"a.*b\".",
+            "Schema location \"/T_ANCHOR:port\", line number 1.");
+    TEST_ERROR_JSON("T_ANCHOR", "cb");
+    CHECK_LOG_CTX("Unsatisfied pattern - \"cb\" does not conform to \"a.*b\".",
+            "Schema location \"/T_ANCHOR:port\", line number 1.");
+}
+
+static void
+test_data_lyb(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("lyb", "leaf port {type string;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_LYB("lyb", "port", "");
+    TEST_SUCCESS_LYB("lyb", "port", "a");
+    TEST_SUCCESS_LYB("lyb", "port", "abcdefghijklmnopqrstuvwxyz");
+}
+
+static void
+test_diff(void **state)
+{
+    (void) state;
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("T_DIFF", "leaf port {type string {length \"6 .. 50 | 120\";}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    struct lyd_node *model_1, *model_2;
+    struct lyd_node *diff;
+    const char *data_1 = "<port xmlns=\"urn:tests:T_DIFF\"> text abc &lt; </port>";
+    const char *data_2 = "<port xmlns=\"urn:tests:T_DIFF\"> text abc &gt; </port>";
+    const char *diff_expected = "<port xmlns=\"urn:tests:T_DIFF\""
+            " xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\""
+            " yang:operation=\"replace\" yang:orig-default=\"false\""
+            " yang:orig-value=\" text abc &lt; \"> text abc &gt; </port>";
+
+    CHECK_PARSE_LYD_PARAM(data_1, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1);
+    CHECK_PARSE_LYD_PARAM(data_2, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_2);
+    assert_int_equal(LY_SUCCESS, lyd_diff_siblings(model_1, model_2, 0, &diff));
+    assert_non_null(diff);
+    CHECK_LYD_STRING_PARAM(diff, diff_expected, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    assert_int_equal(LY_SUCCESS, lyd_diff_apply_all(&model_1, diff));
+    CHECK_LYD(model_1, model_2);
+    lyd_free_all(model_1);
+    lyd_free_all(model_2);
+    lyd_free_all(diff);
+
+    /* create data from diff */
+    diff_expected = "<port xmlns=\"urn:tests:T_DIFF\""
+            " xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\""
+            " yang:operation=\"replace\" yang:orig-default=\"false\""
+            " yang:orig-value=\" 10^20 \">jjjjjjj</port>";
+
+    CHECK_PARSE_LYD_PARAM(diff_expected, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, diff);
+    data_1 = "<port xmlns=\"urn:tests:T_DIFF\"> 10^20 </port>";
+    CHECK_PARSE_LYD_PARAM(data_1, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1);
+    assert_int_equal(LY_SUCCESS, lyd_diff_apply_all(&model_1, diff));
+    const char *expected = "<port xmlns=\"urn:tests:T_DIFF\">jjjjjjj</port>";
+
+    CHECK_LYD_STRING_PARAM(model_1, expected, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    lyd_free_all(model_1);
+    lyd_free_all(diff);
+
+    /* check creating data breaking restrictions */
+    diff_expected = "<port xmlns=\"urn:tests:T_DIFF\" "
+            "xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\" "
+            "yang:operation=\"replace\" yang:orig-default=\"false\" yang:orig-value=\" 555 555\">"
+            "121</port>";
+    CHECK_PARSE_LYD_PARAM(diff_expected, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, model_1);
+    CHECK_LOG_CTX("Unsatisfied length - string \"121\" length is not allowed.",
+            "Schema location \"/T_DIFF:port\", line number 1.");
+
+    /* diff from default value */
+    data_1 = "<cont xmlns=\"urn:tests:T_DIFF1\"></cont>";
+    data_2 = "<cont xmlns=\"urn:tests:T_DIFF1\"> <port> 6 </port> </cont>";
+    diff_expected = "<cont xmlns=\"urn:tests:T_DIFF1\""
+            " xmlns:yang=\"urn:ietf:params:xml:ns:yang:1\""
+            " yang:operation=\"create\"><port> 6 </port></cont>";
+
+    schema = MODULE_CREATE_YANG("T_DIFF1",
+            "container cont {\n"
+            "    leaf port {type string; default \" 20\n30 \";}"
+            "}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    CHECK_PARSE_LYD_PARAM(data_1, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1);
+    CHECK_PARSE_LYD_PARAM(data_2, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_2);
+    assert_int_equal(LY_SUCCESS, lyd_diff_siblings(model_1, model_2, 0, &diff));
+    assert_non_null(diff);
+    CHECK_LYD_STRING_PARAM(diff, diff_expected, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+    assert_int_equal(LY_SUCCESS, lyd_diff_apply_all(&model_1, diff));
+    CHECK_LYD(model_1, model_2);
+    lyd_free_all(diff);
+
+    lyd_free_all(model_1);
+    lyd_free_all(model_2);
+}
+
+static void
+test_print(void **state)
+{
+    (void) state;
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("T_PRINT", "leaf port {type string;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    struct lyd_node *model_1;
+    const char *data_1 = "<port xmlns=\"urn:tests:T_PRINT\"> &lt; hello &gt;  </port>";
+
+    CHECK_PARSE_LYD_PARAM(data_1, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, model_1);
+
+    /* XML */
+    const char *expected_xml = "<port xmlns=\"urn:tests:T_PRINT\"> &lt; hello &gt;  </port>";
+
+    CHECK_LYD_STRING_PARAM(model_1, expected_xml, LYD_XML, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+
+    /* JSON */
+    const char *expected_json = "{\"T_PRINT:port\":\" < hello >  \"}";
+
+    CHECK_LYD_STRING_PARAM(model_1, expected_json, LYD_JSON, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK);
+
+    lyd_free_all(model_1);
+}
+
+static void
+test_plugin_store(void **state)
+{
+    (void) state;
+
+    const char *val_text = NULL;
+    struct ly_err_item *err = NULL;
+    struct lys_module *mod;
+    struct lyd_value value = {0};
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_STRING]);
+    struct lysc_type *lysc_type;
+    char *alloc_text;
+    unsigned int alloc_text_size;
+    LY_ERR ly_ret;
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type string {length \"0 .. 10\";"
+            "pattern '[0-9\\n<>\\\"\\|]*' ;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *) mod->compiled->data)->type;
+
+    /* check proper type */
+    assert_string_equal("libyang 2 - string, version 1", type->id);
+
+    /* check store */
+    val_text = "20";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, STRING, "20");
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    val_text = "150\n";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, STRING, "150\n");
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    val_text = "<\"150>\n";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, STRING, "<\"150>\n");
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    val_text = "<\"150>\n|hi how are you";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val_text, 8,
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, STRING, "<\"150>\n|");
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    val_text = "";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, STRING, "");
+    assert_ptr_equal(value.realtype, lysc_type);
+    type->free(UTEST_LYCTX, &value);
+
+    /*
+     * minor tests
+     * dynamic alocated input text
+     */
+    val_text = "<250>";
+    alloc_text_size = strlen(val_text);
+    alloc_text = (char *) malloc(alloc_text_size + 1);
+    memcpy(alloc_text, val_text, alloc_text_size + 1);
+
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, alloc_text, alloc_text_size,
+            LYPLG_TYPE_STORE_DYNAMIC, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err);
+    alloc_text = NULL;
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    CHECK_LYD_VALUE(value, STRING, "<250>");
+    type->free(UTEST_LYCTX, &value);
+
+    /* wrong lysc_type of value */
+    struct lysc_type lysc_type_test = *lysc_type;
+
+    lysc_type_test.basetype = LY_TYPE_UINT8;
+    val_text = "20";
+    ly_ret = type->store(UTEST_LYCTX, &lysc_type_test, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EINVAL, ly_ret);
+    ly_err_free(err);
+
+    /* TEST pattern backslash */
+
+    schema = MODULE_CREATE_YANG("TPATTERN_BC_1", "leaf port {type string {"
+            "pattern '\\\\[a]b';"  /* pattern '\\[a]b'; */
+            "}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    val_text = "\\ab";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, STRING, "\\ab");
+    type->free(UTEST_LYCTX, &value);
+
+    schema = MODULE_CREATE_YANG("TPATTERN_BC_2", "leaf port {type string {"
+            "pattern \"\\\\\\\\[a]b\";" /* pattern "\\\\[a]b"; */
+            "}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *)mod->compiled->data)->type;
+    val_text = "\\ab";
+    assert_int_equal(LY_SUCCESS, type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err));
+    CHECK_LYD_VALUE(value, STRING, "\\ab");
+    type->free(UTEST_LYCTX, &value);
+
+    /* ERROR TESTS */
+
+    val_text = "10 \"| bcdei";
+    err = NULL;
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EVALID, ly_ret);
+    ly_err_free(err);
+
+    val_text = "012345678901";
+    err = NULL;
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EVALID, ly_ret);
+    ly_err_free(err);
+
+    val_text = "10";
+    err = NULL;
+    ly_ret = type->store(UTEST_LYCTX, lysc_type, val_text, strlen(val_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_DECNUM, NULL, &value, NULL, &err);
+    assert_int_equal(LY_EVALID, ly_ret);
+    ly_err_free(err);
+
+}
+
+static void
+test_plugin_compare(void **state)
+{
+    struct ly_err_item *err = NULL;
+    struct lys_module *mod;
+    struct lyd_value values[10];
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_STRING]);
+    struct lysc_type *lysc_type;
+    LY_ERR ly_ret;
+    const char *schema;
+
+    /* different type */
+    const char *diff_type_text = "20";
+    struct lyd_value  diff_type_val;
+    struct lysc_type *diff_type;
+
+    /* create schema. Prepare common used variables */
+    schema = MODULE_CREATE_YANG("T0", "typedef my_int_type {type string; }"
+            "leaf p1 {type my_int_type;}"
+            "leaf p2 {type my_int_type;}"
+            "leaf p3 {type string;}"
+            "leaf p4 {type uint8;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *) mod->compiled->data)->type;
+
+    /* CREATE VALUES */
+    const char *val_init[] = {"hi", "hello", "hi", "hello", "hell", "hh"};
+
+    for (int unsigned it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        ly_ret = type->store(UTEST_LYCTX, lysc_type, val_init[it], strlen(val_init[it]),
+                0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &(values[it]), NULL, &err);
+        assert_int_equal(LY_SUCCESS, ly_ret);
+    }
+
+    /*  BASIC TEST; */
+    assert_int_equal(LY_SUCCESS, type->compare(&(values[0]), &(values[0])));
+    assert_int_equal(LY_SUCCESS, type->compare(&(values[0]), &(values[2])));
+    assert_int_equal(LY_ENOT, type->compare(&(values[0]), &(values[1])));
+    assert_int_equal(LY_ENOT, type->compare(&(values[1]), &(values[0])));
+    assert_int_equal(LY_ENOT, type->compare(&(values[1]), &(values[2])));
+    assert_int_equal(LY_SUCCESS, type->compare(&(values[1]), &(values[3])));
+
+    /* SAME TYPE but different node */
+    diff_type_text = "hi";
+    diff_type = ((struct lysc_node_leaf *) mod->compiled->data->next)->type;
+    ly_ret = diff_type->plugin->store(UTEST_LYCTX, diff_type, diff_type_text, strlen(diff_type_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &diff_type_val, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    assert_int_equal(LY_SUCCESS, type->compare(&diff_type_val, &(values[0])));
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[1])));
+    type->free(UTEST_LYCTX, &(diff_type_val));
+
+    /* original type  */
+    diff_type_text = "hi";
+    diff_type = ((struct lysc_node_leaf *) mod->compiled->data->next->next)->type;
+    ly_ret = diff_type->plugin->store(UTEST_LYCTX, diff_type, diff_type_text, strlen(diff_type_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &diff_type_val, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[0])));
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[1])));
+    type->free(UTEST_LYCTX, &(diff_type_val));
+
+    /* different type (UINT8) */
+    diff_type_text = "20";
+    diff_type = ((struct lysc_node_leaf *) mod->compiled->data->next->next->next)->type;
+    ly_ret = diff_type->plugin->store(UTEST_LYCTX, diff_type, diff_type_text, strlen(diff_type_text),
+            0, LY_VALUE_XML, NULL, LYD_VALHINT_DECNUM, NULL, &diff_type_val, NULL, &err);
+    assert_int_equal(LY_SUCCESS, ly_ret);
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[0])));
+    assert_int_equal(LY_ENOT, type->compare(&diff_type_val, &(values[1])));
+    type->free(UTEST_LYCTX, &(diff_type_val));
+
+    /* delete values */
+    for (int unsigned it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        type->free(UTEST_LYCTX, &(values[it]));
+    }
+}
+
+static void
+test_plugin_print(void **state)
+{
+    struct ly_err_item *err = NULL;
+    struct lys_module *mod;
+    struct lyd_value values[10];
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_STRING]);
+    struct lysc_type *lysc_type;
+    LY_ERR ly_ret;
+
+    /* create schema. Prepare common used variables */
+    const char *schema = MODULE_CREATE_YANG("defs", "leaf port {type string;}");
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type = ((struct lysc_node_leaf *) mod->compiled->data)->type;
+
+    /* CREATE VALUES */
+    const char *val_init[] = {"20", "0x4A", "<|>", "\""};
+
+    for (int unsigned it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        ly_ret = type->store(UTEST_LYCTX, lysc_type, val_init[it], strlen(val_init[it]),
+                0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &(values[it]), NULL, &err);
+        assert_int_equal(LY_SUCCESS, ly_ret);
+    }
+
+    /* print value */
+    ly_bool dynamic = 0;
+
+    assert_string_equal("20", type->print(UTEST_LYCTX, &(values[0]), LY_VALUE_XML, NULL, &dynamic, NULL));
+    assert_string_equal("0x4A", type->print(UTEST_LYCTX, &(values[1]), LY_VALUE_XML, NULL, &dynamic, NULL));
+    assert_string_equal("<|>", type->print(UTEST_LYCTX, &(values[2]), LY_VALUE_XML, NULL, &dynamic, NULL));
+    assert_string_equal("\"", type->print(UTEST_LYCTX, &(values[3]), LY_VALUE_XML, NULL, &dynamic, NULL));
+
+    for (int unsigned it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        type->free(UTEST_LYCTX, &(values[it]));
+    }
+}
+
+static void
+test_plugin_dup(void **state)
+{
+
+    struct ly_err_item *err = NULL;
+    struct lys_module *mod;
+    struct lyd_value values[10];
+    struct lyplg_type *type = lyplg_type_plugin_find("", NULL, ly_data_type2str[LY_TYPE_STRING]);
+    struct lysc_type *lysc_type[2];
+    const char *schema;
+    LY_ERR ly_ret;
+
+    /* create schema. Prepare common used variables */
+    schema = MODULE_CREATE_YANG("T0", "leaf port {type string;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type[0] = ((struct lysc_node_leaf *) mod->compiled->data)->type;
+
+    schema = MODULE_CREATE_YANG("T1",
+            "typedef my_int_type {"
+            "    type string {length \"1 .. 100\";} default 20;"
+            "}"
+            "leaf port {type my_int_type; }");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, &mod);
+    lysc_type[1] = ((struct lysc_node_leaf *) mod->compiled->data)->type;
+
+    /* CREATE VALUES */
+    const char *val_init[] = {"20", "0x4A", "<\">", "0x4A"};
+
+    for (int unsigned it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        ly_ret = type->store(UTEST_LYCTX, lysc_type[it % 2], val_init[it], strlen(val_init[it]),
+                0, LY_VALUE_XML, NULL, LYD_VALHINT_STRING, NULL, &(values[it]), NULL, &err);
+        assert_int_equal(LY_SUCCESS, ly_ret);
+    }
+
+    /* print duplicate value */
+    struct lyd_value dup_value;
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[0]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, STRING, "20");
+    assert_ptr_equal(dup_value.realtype, values[0].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[1]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, STRING, "0x4A");
+    assert_ptr_equal(dup_value.realtype, values[1].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[2]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, STRING, "<\">");
+    assert_ptr_equal(dup_value.realtype, values[2].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    assert_int_equal(LY_SUCCESS, type->duplicate(UTEST_LYCTX, &(values[3]), &dup_value));
+    CHECK_LYD_VALUE(dup_value, STRING, "0x4A");
+    assert_ptr_equal(dup_value.realtype, values[3].realtype);
+    type->free(UTEST_LYCTX, &dup_value);
+
+    /* error tests */
+    assert_int_equal(LY_EINVAL, type->duplicate(NULL, &(values[0]), &dup_value));
+
+    for (int unsigned it = 0; it < sizeof(val_init) / sizeof(val_init[0]); it++) {
+        type->free(UTEST_LYCTX, &(values[it]));
+    }
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_schema_yang),
+        UTEST(test_schema_yin),
+        UTEST(test_schema_print),
+        UTEST(test_data_xml),
+        UTEST(test_data_json),
+        UTEST(test_data_lyb),
+        UTEST(test_diff),
+        UTEST(test_print),
+
+        UTEST(test_plugin_store),
+        UTEST(test_plugin_compare),
+        UTEST(test_plugin_print),
+        UTEST(test_plugin_dup),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/uint16.c b/tests/utests/types/uint16.c
new file mode 100644
index 0000000..7cbb014
--- /dev/null
+++ b/tests/utests/types/uint16.c
@@ -0,0 +1,75 @@
+/**
+ * @file uint16.c
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief test for uint16 values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* GLOBAL INCLUDE HEADERS */
+#include <ctype.h>
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+#include "plugins_internal.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, ## __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "leaf port {type uint16 {range 150..200;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_ERROR_XML("defs", "\n 1500 \t\n  ");
+    CHECK_LOG_CTX("Unsatisfied range - value \"1500\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 3.");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/uint32.c b/tests/utests/types/uint32.c
new file mode 100644
index 0000000..e3e6377
--- /dev/null
+++ b/tests/utests/types/uint32.c
@@ -0,0 +1,75 @@
+/**
+ * @file uint32.c
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief test for uint32 values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* GLOBAL INCLUDE HEADERS */
+#include <ctype.h>
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+#include "plugins_internal.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, ## __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "leaf port {type uint32;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_ERROR_XML("defs", "-10");
+    CHECK_LOG_CTX("Value \"-10\" is out of type uint32 min/max bounds.",
+            "Schema location \"/defs:port\", line number 1.");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/uint64.c b/tests/utests/types/uint64.c
new file mode 100644
index 0000000..401c37c
--- /dev/null
+++ b/tests/utests/types/uint64.c
@@ -0,0 +1,83 @@
+/**
+ * @file uint64.c
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief test for uint64 values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* GLOBAL INCLUDE HEADERS */
+#include <ctype.h>
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+#include "plugins_internal.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, ## __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "leaf port {type uint64;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_ERROR_XML("defs", "");
+    CHECK_LOG_CTX("Invalid type uint64 empty value.",
+            "Schema location \"/defs:port\", line number 1.");
+
+    TEST_ERROR_XML("defs", "   ");
+    CHECK_LOG_CTX("Invalid type uint64 empty value.",
+            "Schema location \"/defs:port\", line number 1.");
+
+    TEST_ERROR_XML("defs", "10  xxx");
+    CHECK_LOG_CTX("Invalid type uint64 value \"10  xxx\".",
+            "Schema location \"/defs:port\", line number 1.");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/uint8.c b/tests/utests/types/uint8.c
new file mode 100644
index 0000000..dad4039
--- /dev/null
+++ b/tests/utests/types/uint8.c
@@ -0,0 +1,77 @@
+/**
+ * @file uint8.c
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief test for uint8 values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* GLOBAL INCLUDE HEADERS */
+#include <ctype.h>
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+#include "plugins_internal.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYSC_NODE(tree->schema, NULL, 0, 0x5, 1, "port", 0, LYS_LEAF, 0, 0, 0, 0); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<port xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</port>"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "leaf port {type uint8 {range 150..200;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_XML("defs", "\n 150 \t\n  ", UINT8, "150", 150);
+
+    TEST_ERROR_XML("defs", "\n 15 \t\n  ");
+    CHECK_LOG_CTX("Unsatisfied range - value \"15\" is out of the allowed range.",
+            "Schema location \"/defs:port\", line number 3.");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/union.c b/tests/utests/types/union.c
new file mode 100644
index 0000000..9a0705a
--- /dev/null
+++ b/tests/utests/types/union.c
@@ -0,0 +1,136 @@
+/**
+ * @file union.c
+ * @author Adam Piecek <piecek@cesnet.cz>
+ * @brief test for built-in enumeration type
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+/* LOCAL INCLUDE HEADERS */
+#include "libyang.h"
+#include "path.h"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML2(XML1, MOD_NAME, NAMESPACES, NODE_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = XML1 "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\" " NAMESPACES ">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 1, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML2(XML1, MOD_NAME, NAMESPACES, NODE_NAME, DATA, RET) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = XML1 "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\" " NAMESPACES ">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_STRICT, LYD_VALIDATE_PRESENT, RET, tree); \
+        assert_null(tree); \
+    }
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME, DATA) \
+    { \
+        struct lyd_node *tree_1; \
+        struct lyd_node *tree_2; \
+        char *xml_out, *data; \
+        data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+    const enum ly_path_pred_type val1[] = {LY_PATH_PREDTYPE_LEAFLIST};
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("defs", "identity ident1; identity ident2 {base ident1;}"
+            "leaf un1 {type union {"
+            "    type leafref {path /int8; require-instance true;}"
+            "    type leafref {path /int64; require-instance true;}"
+            "    type union { type identityref {base ident1;} type instance-identifier {require-instance true;} }"
+            "    type string {length 1..20;}}}"
+            "leaf int8 {type int8 {range 10..20;}}"
+            "leaf int64 {type int64;}"
+            "leaf-list llist {type string;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    TEST_SUCCESS_XML2("<int8 xmlns=\"urn:tests:defs\">12</int8>",
+            "defs", "", "un1", "12", UNION, "12", INT8, "12", 12);
+
+    TEST_SUCCESS_XML2("<int8 xmlns=\"urn:tests:defs\">12</int8>",
+            "defs", "", "un1", "2", UNION, "2", STRING, "2");
+
+    TEST_SUCCESS_XML2("<int8 xmlns=\"urn:tests:defs\">10</int8>",
+            "defs", "xmlns:x=\"urn:tests:defs\"", "un1", "x:ident2", UNION, "defs:ident2", IDENT, "defs:ident2", "ident2");
+
+    TEST_SUCCESS_XML2("<int8 xmlns=\"urn:tests:defs\">10</int8>",
+            "defs", "xmlns:x=\"urn:tests:defs\"", "un1", "x:ident55", UNION, "x:ident55", STRING, "x:ident55");
+
+    TEST_SUCCESS_XML2("<llist xmlns=\"urn:tests:defs\">x</llist>"
+            "<llist xmlns=\"urn:tests:defs\">y</llist>",
+            "defs", "xmlns:x=\"urn:tests:defs\"", "un1", "/x:llist[.='y']", UNION, "/defs:llist[.='y']",
+            INST, "/defs:llist[.='y']", val1);
+
+    TEST_SUCCESS_XML2("<llist xmlns=\"urn:tests:defs\">x</llist>"
+            "<llist xmlns=\"urn:tests:defs\">y</llist>",
+            "defs", "xmlns:x=\"urn:tests:defs\"", "un1", "/x:llist[3]", UNION, "/x:llist[3]",
+            STRING, "/x:llist[3]");
+
+    /* invalid value */
+    TEST_ERROR_XML2("",
+            "defs", "", "un1", "123456789012345678901", LY_EVALID);
+    CHECK_LOG_CTX("Invalid union value \"123456789012345678901\" - no matching subtype found.",
+            "Schema location \"/defs:un1\", line number 1.");
+}
+
+static void
+test_plugin_lyb(void **state)
+{
+    const char *schema;
+
+    schema = MODULE_CREATE_YANG("lyb",
+            "leaf int8 {type int8 {range 10..20;}}"
+            "leaf un1 {type union {"
+            "    type leafref {path /int8; require-instance true;}"
+            "    type string;}}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    TEST_SUCCESS_LYB("lyb", "un1", "12");
+    TEST_SUCCESS_LYB("lyb", "un1", "some_string");
+    TEST_SUCCESS_LYB("lyb", "un1", "");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+        UTEST(test_plugin_lyb),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/types/yang_types.c b/tests/utests/types/yang_types.c
new file mode 100644
index 0000000..6ce7671
--- /dev/null
+++ b/tests/utests/types/yang_types.c
@@ -0,0 +1,223 @@
+/**
+ * @file yang_types.c
+ * @author Michal Vaško <mvasko@cesnet.cz>
+ * @brief test for ietf-yang-types values
+ *
+ * Copyright (c) 2021 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+/* INCLUDE UTEST HEADER */
+#define  _UTEST_MAIN_
+#include "../utests.h"
+
+#include <stdlib.h>
+
+#include "compat.h"
+#include "libyang.h"
+
+#define MODULE_CREATE_YIN(MOD_NAME, NODES) \
+    "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" \
+    "<module name=\"" MOD_NAME "\"\n" \
+    "        xmlns=\"urn:ietf:params:xml:ns:yang:yin:1\"\n" \
+    "        xmlns:pref=\"urn:tests:" MOD_NAME "\">\n" \
+    "  <yang-version value=\"1.1\"/>\n" \
+    "  <namespace uri=\"urn:tests:" MOD_NAME "\"/>\n" \
+    "  <prefix value=\"pref\"/>\n" \
+    NODES \
+    "</module>\n"
+
+#define MODULE_CREATE_YANG(MOD_NAME, NODES) \
+    "module " MOD_NAME " {\n" \
+    "  yang-version 1.1;\n" \
+    "  namespace \"urn:tests:" MOD_NAME "\";\n" \
+    "  prefix pref;\n" \
+    "  import ietf-yang-types {\n" \
+    "    prefix yang;\n" \
+    "  }\n" \
+    NODES \
+    "}\n"
+
+#define TEST_SUCCESS_XML(MOD_NAME, NODE_NAME, DATA, TYPE, ...) \
+    { \
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree); \
+        CHECK_LYD_NODE_TERM((struct lyd_node_term *)tree, 0, 0, 0, 0, 1, TYPE, __VA_ARGS__); \
+        lyd_free_all(tree); \
+    }
+
+#define TEST_ERROR_XML(MOD_NAME, NODE_NAME, DATA) \
+    {\
+        struct lyd_node *tree; \
+        const char *data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_EVALID, tree); \
+        assert_null(tree); \
+    }
+
+#define TEST_SUCCESS_LYB(MOD_NAME, NODE_NAME, DATA) \
+    { \
+        struct lyd_node *tree_1; \
+        struct lyd_node *tree_2; \
+        char *xml_out, *data; \
+        data = "<" NODE_NAME " xmlns=\"urn:tests:" MOD_NAME "\">" DATA "</" NODE_NAME ">"; \
+        CHECK_PARSE_LYD_PARAM(data, LYD_XML, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, LY_SUCCESS, tree_1); \
+        assert_int_equal(lyd_print_mem(&xml_out, tree_1, LYD_LYB, LYD_PRINT_WITHSIBLINGS), 0); \
+        assert_int_equal(LY_SUCCESS, lyd_parse_data_mem(UTEST_LYCTX, xml_out, LYD_LYB, LYD_PARSE_ONLY | LYD_PARSE_STRICT, 0, &tree_2)); \
+        assert_non_null(tree_2); \
+        CHECK_LYD(tree_1, tree_2); \
+        free(xml_out); \
+        lyd_free_all(tree_1); \
+        lyd_free_all(tree_2); \
+    }
+
+static void
+test_data_xml(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("a",
+            "leaf l {type yang:date-and-time;}"
+            "leaf l2 {type yang:xpath1.0;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+    schema = MODULE_CREATE_YANG("b",
+            "");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* date-and-time */
+#if defined (HAVE_TM_GMTOFF) && defined (HAVE_TIME_H_TIMEZONE)
+    TEST_SUCCESS_XML("a", "l", "2005-05-25T23:15:15.88888Z", STRING, "2005-05-25T21:15:15.88888-02:00");
+    TEST_SUCCESS_XML("a", "l", "2005-05-31T23:15:15-08:59", STRING, "2005-06-01T06:14:15-02:00");
+    TEST_SUCCESS_XML("a", "l", "2005-05-31T23:15:15-23:00", STRING, "2005-06-01T20:15:15-02:00");
+
+    /* test 1 second before epoch (mktime returns -1, but it is a correct value), with and without DST */
+    TEST_SUCCESS_XML("a", "l", "1970-01-01T00:59:59-02:00", STRING, "1970-01-01T00:59:59-02:00");
+    TEST_SUCCESS_XML("a", "l", "1969-12-31T23:59:59-02:00", STRING, "1969-12-31T23:59:59-02:00");
+
+    /* canonize */
+    TEST_SUCCESS_XML("a", "l", "2005-02-29T23:15:15-02:00", STRING, "2005-03-01T23:15:15-02:00");
+
+    /* fractional hours */
+    TEST_SUCCESS_XML("a", "l", "2005-05-25T23:15:15.88888+04:30", STRING, "2005-05-25T16:45:15.88888-02:00");
+#else
+    /* Tests run with a TZ offset of +02:00, but this platform cannot represent that in time_t,
+     * so libyang always returns unspecified TZ. */
+    TEST_SUCCESS_XML("a", "l", "2005-05-25T23:15:15.88888Z", STRING, "2005-05-25T23:15:15.88888-00:00");
+    TEST_SUCCESS_XML("a", "l", "2005-05-31T23:15:15-08:59", STRING, "2005-06-01T08:14:15-00:00");
+    TEST_SUCCESS_XML("a", "l", "2005-05-31T23:15:15-23:00", STRING, "2005-06-01T22:15:15-00:00");
+
+    /* test 1 second before epoch (mktime returns -1, but it is a correct value), with and without DST */
+    TEST_SUCCESS_XML("a", "l", "1970-01-01T00:59:59-02:00", STRING, "1970-01-01T02:59:59-00:00");
+    TEST_SUCCESS_XML("a", "l", "1969-12-31T23:59:59-02:00", STRING, "1970-01-01T01:59:59-00:00");
+
+    /* canonize */
+    TEST_SUCCESS_XML("a", "l", "2005-02-29T23:15:15-02:00", STRING, "2005-03-02T01:15:15-00:00");
+
+    /* fractional hours */
+    TEST_SUCCESS_XML("a", "l", "2005-05-25T23:15:15.88888+04:30", STRING, "2005-05-25T18:45:15.88888-00:00");
+#endif
+
+    /* unknown timezone -- timezone conversion MUST NOT happen */
+    TEST_SUCCESS_XML("a", "l", "2017-02-01T00:00:00-00:00", STRING, "2017-02-01T00:00:00-00:00");
+    TEST_SUCCESS_XML("a", "l", "2021-02-29T00:00:00-00:00", STRING, "2021-03-01T00:00:00-00:00");
+
+    TEST_ERROR_XML("a", "l", "2005-05-31T23:15:15.-08:00");
+    CHECK_LOG_CTX("Unsatisfied pattern - \"2005-05-31T23:15:15.-08:00\" does not conform to "
+            "\"\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}(\\.\\d+)?(Z|[\\+\\-]\\d{2}:\\d{2})\".",
+            "Schema location \"/a:l\", line number 1.");
+
+    /* xpath1.0 */
+    TEST_SUCCESS_XML("a\" xmlns:aa=\"urn:tests:a", "l2", "/aa:l2[. = '4']", STRING, "/a:l2[.='4']");
+    TEST_SUCCESS_XML("a\" xmlns:yl=\"urn:ietf:params:xml:ns:yang:ietf-yang-library\" "
+            "xmlns:ds=\"urn:ietf:params:xml:ns:yang:ietf-datastores", "l2",
+            "/yl:yang-library/yl:datastore/yl:name = 'ds:running'", STRING,
+            "/ietf-yang-library:yang-library/datastore/name='ietf-datastores:running'");
+    TEST_SUCCESS_XML("a\" xmlns:a1=\"urn:tests:a\" xmlns:a2=\"urn:tests:a\" xmlns:bb=\"urn:tests:b", "l2",
+            "/a1:node1/a2:node2[a1:node3/bb:node4]/bb:node5 | bb:node6 and (bb:node7)", STRING,
+            "/a:node1/node2[node3/b:node4]/b:node5 | b:node6 and (b:node7)");
+    TEST_SUCCESS_XML("a", "l2", "/l2[. = '4']", STRING, "/l2[.='4']");
+
+    TEST_ERROR_XML("a", "l2", "/a:l2[. = '4']");
+    CHECK_LOG_CTX("Failed to resolve prefix \"a\".", "Schema location \"/a:l2\", line number 1.");
+    TEST_ERROR_XML("a\" xmlns:yl=\"urn:ietf:params:xml:ns:yang:ietf-yang-library", "l2",
+            "/yl:yang-library/yl:datastore/yl::name");
+    CHECK_LOG_CTX("Storing value failed.", "Schema location \"/a:l2\", line number 1.",
+            "Invalid character 'y'[31] of expression '/yl:yang-library/yl:datastore/yl::name'.",
+            "Schema location \"/a:l2\", line number 1.");
+}
+
+static void
+test_print(void **state)
+{
+    const char *schema = MODULE_CREATE_YANG("a", "leaf l {type yang:xpath1.0;}");
+    const char *data, *expected;
+    struct lyd_node *tree;
+
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* XML data */
+    data = "<l xmlns=\"urn:tests:a\" xmlns:aa=\"urn:tests:a\">/aa:l[. = '/aa:l']</l>";
+    CHECK_PARSE_LYD_PARAM(data, LYD_XML, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+
+    /* XML print */
+    expected = "<l xmlns=\"urn:tests:a\" xmlns:pref=\"urn:tests:a\">/pref:l[.='/pref:l']</l>";
+    CHECK_LYD_STRING_PARAM(tree, expected, LYD_XML, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS);
+
+    /* JSON print */
+    expected = "{\"a:l\":\"/a:l[.='/a:l']\"}";
+    CHECK_LYD_STRING_PARAM(tree, expected, LYD_JSON, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS);
+
+    lyd_free_tree(tree);
+
+    /* JSON data */
+    data = "{\"a:l\":\"/a:l/k/m[. = '/a:l']\"}";
+    CHECK_PARSE_LYD_PARAM(data, LYD_JSON, 0, LYD_VALIDATE_PRESENT, LY_SUCCESS, tree);
+
+    /* XML print */
+    expected = "<l xmlns=\"urn:tests:a\" xmlns:pref=\"urn:tests:a\">/pref:l/pref:k/pref:m[.='/pref:l']</l>";
+    CHECK_LYD_STRING_PARAM(tree, expected, LYD_XML, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS);
+
+    /* JSON print */
+    expected = "{\"a:l\":\"/a:l/k/m[. = '/a:l']\"}";
+    CHECK_LYD_STRING_PARAM(tree, expected, LYD_JSON, LYD_PRINT_SHRINK | LYD_PRINT_WITHSIBLINGS);
+
+    lyd_free_tree(tree);
+}
+
+static void
+test_lyb(void **state)
+{
+    const char *schema;
+
+    /* xml test */
+    schema = MODULE_CREATE_YANG("a",
+            "leaf l {type yang:date-and-time;}"
+            "leaf l2 {type yang:xpath1.0;}");
+    UTEST_ADD_MODULE(schema, LYS_IN_YANG, NULL, NULL);
+
+    /* date-and-time */
+    TEST_SUCCESS_LYB("a", "l", "2005-05-25T23:15:15.88888Z");
+    TEST_SUCCESS_LYB("a", "l", "2005-05-31T23:15:15-08:59");
+    TEST_SUCCESS_LYB("a", "l", "2005-05-01T20:15:15-00:00");
+
+    /* xpath1.0 */
+    TEST_SUCCESS_LYB("a\" xmlns:aa=\"urn:tests:a", "l2", "/aa:l2[. = '4']");
+}
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        UTEST(test_data_xml),
+        UTEST(test_print),
+        UTEST(test_lyb),
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}
diff --git a/tests/utests/utests.h b/tests/utests/utests.h
new file mode 100644
index 0000000..877d048
--- /dev/null
+++ b/tests/utests/utests.h
@@ -0,0 +1,1505 @@
+/**
+ * @file   utests.h
+ * @author Radek Iša <isa@cesnet.cz>
+ * @author Radek Krejci <rkrejci@cesnet.cz>
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief  this file contains macros for simplification test writing
+ *
+ * Copyright (c) 2021 - 2022 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+#ifndef _UTESTS_H_
+#define _UTESTS_H_
+
+#define _POSIX_C_SOURCE 200809L /* strdup */
+
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include <cmocka.h>
+
+#include <string.h>
+
+#include "libyang.h"
+#include "plugins_exts/metadata.h"
+#include "plugins_internal.h"
+#include "plugins_types.h"
+#include "tests_config.h"
+#include "tree_schema_internal.h"
+
+/**
+ * TESTS OVERVIEW
+ *
+ * To include utest's environment, just include "utests.h" in the test's source
+ * code. In case it is the main source code for a cmocka test group (there is a
+ * main() function), define _UTEST_MAIN_ before including this header.
+ *
+ * TESTS VARIABLES
+ *
+ * Checking macros use internal storage to store various variables necessary
+ * during the checking. It is possible to access these variables using the
+ * following macros:
+ *
+ * UTEST_LYCTX    - libyang context
+ * UTEST_IN       - input handler
+ * UTEST_OUT      - output handler
+ *
+ * All these variables are cleaned with test's teardown.
+ *
+ * TESTS SETUP
+ *
+ * CMocka's CMUnitTest list definition macros (cmoka_unit_test*()) are replaced
+ * by UTEST macro with possibility to specify own setup and teardown functions:
+ *
+ * UTEST(test_func) - only implicit setup and teardown functions are used
+ * UTEST(test_func, setup) - implicit teardown but own setup
+ * UTEST(test_func, setup, teardown) - both setup and teardown are test-specific
+ *
+ * Note that the tests environment always provide (and need) internal setup and
+ * teardown functions. In case the test-specific setup or teardown are used, they
+ * are supposed to include UTEST_SETUP at the setup beginning and UTEST_TEARDOWN
+ * at the teardown end.
+ *
+ * Libyang context is part of the prepared environment. To add a schema into the
+ * context (despite it is in the test-specific setup or in test function itself),
+ * use UTEST_ADD_MODULE macro.
+ *
+ * LOGGING
+ *
+ * There are 2 macros to check content of the log from the previously called
+ * libyang function. CHECK_LOG macro test only the last error message and path
+ * stored directly via logging callback. CHECK_LOG_CTX gets error message and
+ * path from the libyang context (in case the function does not store the error
+ * information into the libyang context, the message cannot be checked this way).
+ * libyang is set to store multiple error information, so multiple couples of
+ * error message and path can be provided to be checked (the first couple
+ * corresponds to the latest error). The macro also cleanups the errors list, so
+ * it is fine to check that there is no error after succeeding successful
+ * function call.
+ */
+
+/**
+ * @brief Test's context to provide common storage for various variables.
+ */
+struct utest_context {
+    struct ly_ctx *ctx;  /**< libyang context */
+
+    char *err_msg;       /**< Directly logged error message */
+    char *err_path;      /**< Directly logged error path */
+
+    struct ly_in *in;    /**< Input handler */
+    struct ly_out *out;  /**< Outpu handler */
+
+    char *orig_tz;       /**< Original "TZ" environment variable value */
+};
+
+/**
+ * @brief Shortcut to access utest_context.
+ */
+#define _UC ((struct utest_context *)*state)
+
+/**
+ * @brief libyang context provider.
+ */
+#define UTEST_LYCTX (_UC->ctx)
+
+/**
+ * @brief Context's input handler provider
+ */
+#define UTEST_IN (_UC->in)
+
+/**
+ * @brief Context's input handler provider
+ */
+#define UTEST_OUT (_UC->out)
+
+/**
+ * @brief Parse (and validate) data from the input handler as a YANG data tree.
+ *
+ * @param[in] INPUT The input data in the specified @p format to parse (and validate)
+ * @param[in] INPUT_FORMAT Format of the input data to be parsed. Can be 0 to try to detect format from the input handler.
+ * @param[in] PARSE_OPTIONS Options for parser, see @ref dataparseroptions.
+ * @param[in] VALIDATE_OPTIONS Options for the validation phase, see @ref datavalidationoptions.
+ * @param[in] RET expected return status
+ * @param[out] OUT_NODE Resulting data tree built from the input data. Note that NULL can be a valid result as a
+ * representation of an empty YANG data tree.
+ */
+#define CHECK_PARSE_LYD_PARAM(INPUT, INPUT_FORMAT, PARSE_OPTIONS, VALIDATE_OPTIONS, RET, OUT_NODE) \
+    { \
+        LY_ERR _r = lyd_parse_data_mem(_UC->ctx, INPUT, INPUT_FORMAT, PARSE_OPTIONS, VALIDATE_OPTIONS, &OUT_NODE); \
+        if (_r != RET) { \
+            if (_r) { \
+                fail_msg("%s != 0x%d; MSG: %s", #RET, _r, ly_err_last(_UC->ctx)->msg); \
+            } else { \
+                fail_msg("%s != 0x%d", #RET, _r); \
+            } \
+        } \
+    }
+
+/**
+ * @brief Check if lyd_node and his subnodes have correct values. Print lyd_node and his sunodes int o string in json or xml format.
+ * @param[in] NODE pointer to lyd_node
+ * @param[in] TEXT expected output string in json or xml format.
+ * @param[in] FORMAT format of input text. LYD_JSON, LYD_XML
+ * @param[in] PARAM  options [Data printer flags](@ref dataprinterflags).
+ */
+#define CHECK_LYD_STRING_PARAM(NODE, TEXT, FORMAT, PARAM) \
+    { \
+        char *str; \
+        LY_ERR _r = lyd_print_mem(&str, NODE, FORMAT, PARAM); \
+        if (_r) { \
+            fail_msg("Print err 0x%d; MSG: %s", _r, ly_err_last(_UC->ctx)->msg); \
+        } \
+        assert_string_equal(str, TEXT); \
+        free(str); \
+    }
+
+/**
+ * @brief Compare two lyd_node structure. Macro print lyd_node structure into string and then compare string. Print function use these two parameters. LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK;
+ * @param[in] NODE_1 pointer to lyd_node
+ * @param[in] NODE_2 pointer to lyd_node
+ */
+#define CHECK_LYD(NODE_1, NODE_2) \
+    { \
+        char *str1; \
+        char *str2; \
+        assert_int_equal(LY_SUCCESS, lyd_print_mem(&str1, NODE_1, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK)); \
+        assert_int_equal(LY_SUCCESS, lyd_print_mem(&str2, NODE_2, LYD_XML, LYD_PRINT_WITHSIBLINGS | LYD_PRINT_SHRINK)); \
+        assert_non_null(str1); \
+        assert_non_null(str2); \
+        assert_string_equal(str1, str2); \
+        free(str1); \
+        free(str2); \
+    }
+
+/*
+ * SUPPORT MACROS
+ */
+
+/**
+ * @brief Internal macro witch assert that two given string are equal or are both null.
+ *
+ * @param[in] STRING string to check
+ * @param[in] TEXT   string to compare
+ */
+#define CHECK_STRING(STRING, TEXT)\
+    if (TEXT == NULL) { \
+        assert_null(STRING); \
+    } else { \
+        assert_non_null(STRING); \
+        assert_string_equal(STRING, TEXT); \
+    }
+
+/**
+ * @brief Internal macro witch assert that pointer is null when flag is 0.
+ *
+ * @param[in] POINTER pointer to check
+ * @param[in] FLAG    0 -> pointer is NULL, 1 -> pointer is not null
+ */
+#define CHECK_POINTER(POINTER, FLAG) \
+    assert_true(FLAG == 0 ? POINTER == NULL : POINTER != NULL)
+
+/**
+ * @brief Internal macro check size of [sized array](@ref sizedarrays)'s
+ *
+ * @param[in] ARRAY pointer to [sized array](@ref sizedarrays)
+ * @param[in] SIZE  expected [sized array](@ref sizedarrays) size of array
+ */
+#define CHECK_ARRAY(ARRAY, SIZE) \
+    assert_true((SIZE == 0) ? \
+                (ARRAY == NULL) : \
+                (ARRAY != NULL && SIZE == LY_ARRAY_COUNT(ARRAY)));
+
+/*
+ *   LIBYANG NODE CHECKING
+ */
+
+/**
+ * @brief check compileted type
+ *
+ * @param[in] NODE pointer to lysc_type value
+ * @param[in] TYPE expected type [LY_DATA_TYPE](@ref LY_DATA_TYPE)
+ * @param[in] EXTS expected [sized array](@ref sizedarrays) size of extens list
+ */
+#define CHECK_LYSC_TYPE(NODE, TYPE, EXTS) \
+    assert_non_null(NODE); \
+    assert_int_equal((NODE)->basetype, TYPE); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    assert_ptr_equal((NODE)->plugin, lyplg_type_plugin_find("", NULL, ly_data_type2str[TYPE]))
+
+/**
+ * @brief check compileted numeric type
+ *
+ * @param[in] NODE pointer to lysc_type_num value
+ * @param[in] TYPE expected type [LY_DATA_TYPE](@ref LY_DATA_TYPE)
+ * @param[in] EXTS expected [sized array](@ref sizedarrays) size of extens list
+ * @warning only integer types INT, UINT, NUM
+ */
+#define CHECK_LYSC_TYPE_NUM(NODE, TYPE, EXTS, RANGE) \
+    CHECK_LYSC_TYPE(NODE, TYPE, EXTS);\
+    CHECK_POINTER((NODE)->range, RANGE)
+
+/**
+ * @brief check compiled string type
+ *
+ * @param[in] NODE     pointer to lysc_type_num value
+ * @param[in] EXTS     expected [sized array](@ref sizedarrays) size of extens list
+ * @param[in] LENGTH   0 -> node dosnt have length limitation, 1 -> node have length limitation
+ * @param[in] PATTERNS expected number of patterns [sized array](@ref sizedarrays)
+ * @warning only integer types INT, UINT, NUM
+ */
+#define CHECK_LYSC_TYPE_STR(NODE, EXTS, LENGTH, PATTERNS) \
+    CHECK_LYSC_TYPE(NODE, LY_TYPE_STRING, EXTS); \
+    CHECK_POINTER((NODE)->length, LENGTH); \
+    CHECK_ARRAY((NODE)->patterns, PATTERNS)
+
+/**
+ * @brief check compiled bits type
+ *
+ * @param[in] NODE     pointer to lysc_type_num value
+ * @param[in] EXTS     expected [sized array](@ref sizedarrays) size of extens list
+ * @param[in] BITS     expected number of bits
+ * @warning only integer types INT, UINT, NUM
+ */
+#define CHECK_LYSC_TYPE_BITS(NODE, EXTS, BITS) \
+    CHECK_LYSC_TYPE(NODE, LY_TYPE_BITS, EXTS); \
+    CHECK_ARRAY((NODE)->bits, BITS)
+
+#define CHECK_LYSC_TYPE_BITENUM_ITEM(NODE, POSITION, DSC, EXTS, FLAGS, NAME, REF)\
+    assert_non_null(NODE); \
+    assert_int_equal((NODE)->position, POSITION); \
+    CHECK_STRING((NODE)->dsc, DSC); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    assert_int_equal((NODE)->flags, FLAGS); \
+    CHECK_STRING((NODE)->name, NAME); \
+    CHECK_STRING((NODE)->ref, REF) \
+
+/**
+ * @brief check range
+ *
+ * @param[in] NODE     pointer to lysc_range value
+ * @param[in] DSC      expected descriptin (string)
+ * @param[in] EAPPTAG  expected string reprezenting error-app-tag value
+ * @param[in] EMSG     expected string reprezenting error message
+ * @param[in] EXTS     expected [sized array](@ref sizedarrays) size of extens list
+ * @param[in] PARTS    expected [sized array](@ref sizedarrays) number of rang limitations
+ * @param[in] REF      expected reference
+ */
+#define CHECK_LYSC_RANGE(NODE, DSC, EAPPTAG, EMSG, EXTS, PARTS, REF) \
+    assert_non_null(NODE); \
+    CHECK_STRING((NODE)->dsc, DSC); \
+    CHECK_STRING((NODE)->eapptag, EAPPTAG); \
+    CHECK_STRING((NODE)->emsg, EMSG); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    CHECK_ARRAY((NODE)->parts, PARTS); \
+    CHECK_STRING((NODE)->ref, REF)
+
+/**
+ * @brief check pattern
+ *
+ * @param[in] NODE     pointer to lysc_pattern value
+ * @param[in] DSC      expected descriptin (string)
+ * @param[in] EAPPTAG  expected string reprezenting error-app-tag value
+ * @param[in] EMSG     expected string reprezenting error message
+ * @param[in] EEXPR    expected string reprezenting original, not compiled, regular expression
+ * @param[in] EXTS     expected [sized array](@ref sizedarrays) size of extens list
+ * @param[in] INVERTED if regular expression is inverted.
+ * @param[in] REF      expected reference
+ */
+#define CHECK_LYSC_PATTERN(NODE, DSC, EAPPTAG, EMSG, EXPR, EXTS, INVERTED, REF) \
+    assert_non_null(NODE); \
+    assert_non_null((NODE)->code); \
+    CHECK_STRING((NODE)->dsc, DSC); \
+    CHECK_STRING((NODE)->eapptag, EAPPTAG); \
+    CHECK_STRING((NODE)->emsg, EMSG); \
+    CHECK_STRING((NODE)->expr, EXPR); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    assert_int_equal((NODE)->inverted, INVERTED); \
+    CHECK_STRING((NODE)->ref, REF)
+
+/**
+ * @brief assert that lysp_action_inout structure members are correct
+ *
+ * @param[in] NODE      pointer to lysp_action_inout variable
+ * @param[in] DATA      0 -> check if pointer to data is NULL, 1 -> check if pointer to data is not null
+ * @param[in] EXTS      expected [sized array](@ref sizedarrays) size of extens list
+ * @param[in] GROUPINGS expected [sized array](@ref sizedarrays) size of grouping list
+ * @param[in] MUSTS     expected [sized array](@ref sizedarrays) size of must restriction list
+ * @param[in] NODETYPE  node type. LYS_INPUT or LYS_OUTPUT
+ * @param[in] PARENT    0 -> check if node is root, 1 -> check if node is not root
+ * @param[in] TYPEDEFS  expected [sized array](@ref sizedarrays) size of typedefs list
+ */
+#define CHECK_LYSP_ACTION_INOUT(NODE, DATA, EXTS, GROUPINGS, MUSTS, NODETYPE, PARENT, TYPEDEFS) \
+    assert_non_null(NODE); \
+    CHECK_POINTER((NODE)->child, DATA); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    CHECK_POINTER((NODE)->groupings, GROUPINGS); \
+    CHECK_ARRAY((NODE)->musts, MUSTS); \
+    assert_int_equal((NODE)->nodetype, NODETYPE); \
+    CHECK_POINTER((NODE)->parent, PARENT); \
+    CHECK_ARRAY((NODE)->typedefs, TYPEDEFS);
+
+/**
+ * @brief assert that lysp_action structure members are correct
+ *
+ * @param[in] NODE    pointer to lysp_action variable
+ * @param[in] DSC     expected description
+ * @param[in] EXTS    expected [sized array](@ref sizedarrays) size of extension list
+ * @param[in] FLAGS   expected [schema node flags](@ref snodeflags)
+ * @param[in] GROUPINGS expected [sized array](@ref sizedarrays) size of grouping list
+ * @param[in] IFFEATURES expected [sized array](@ref sizedarrays) size of if-feature expressions list
+ * @param[in] INPUT_*    ::LYSP_ACTION_INOUT_CHECK
+ * @param[in] NAME     expected name
+ * @param[in] NODETYPE node type. LYS_RPC or LYS_ACTION
+ * @param[in] OUTPUT_*    ::LYSP_ACTION_INOUT_CHECK
+ * @param[in] PARENT   0-> check if node is root, 1-> check if node is not root
+ * @param[in] REF      expected reference
+ * @param[in] TYPEDEFS expected [sized array](@ref sizedarrays) size of list of typedefs
+ */
+#define CHECK_LYSP_ACTION(NODE, DSC, EXTS, FLAGS, GROUPINGS, IFFEATURES, \
+                INPUT_DATA, INPUT_EXTS, INPUT_GROUPINGS, INPUT_MUSTS, \
+                INPUT_PARENT, INPUT_TYPEDEFS, \
+                NAME, NODETYPE, \
+                OUTPUT_DATA, OUTPUT_EXTS, OUTPUT_GROUPINGS, OUTPUT_MUSTS, \
+                OUTPUT_PARENT, OUTPUT_TYPEDEFS, \
+                PARENT, REF, TYPEDEFS) \
+    assert_non_null(NODE); \
+    CHECK_STRING((NODE)->dsc, DSC); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    assert_int_equal((NODE)->flags, FLAGS); \
+    CHECK_POINTER((NODE)->groupings, GROUPINGS); \
+    CHECK_ARRAY((NODE)->iffeatures, IFFEATURES); \
+    CHECK_LYSP_ACTION_INOUT(&((NODE)->input), INPUT_DATA, INPUT_EXTS, INPUT_GROUPINGS, \
+                INPUT_MUSTS, LYS_INPUT, INPUT_PARENT, INPUT_TYPEDEFS); \
+    assert_string_equal((NODE)->name, NAME); \
+    assert_int_equal((NODE)->nodetype, NODETYPE); \
+    CHECK_LYSP_ACTION_INOUT(&((NODE)->output), OUTPUT_DATA, OUTPUT_EXTS, OUTPUT_GROUPINGS, \
+                OUTPUT_MUSTS, LYS_OUTPUT, OUTPUT_PARENT, OUTPUT_TYPEDEFS); \
+    CHECK_POINTER((NODE)->parent, PARENT); \
+    CHECK_STRING((NODE)->ref, REF); \
+    CHECK_ARRAY((NODE)->typedefs, TYPEDEFS) \
+
+/**
+ * @brief assert that lysp_when structure members are correct
+ *
+ * @param[in] NODE pointer to lysp_when variable
+ * @param[in] COND expected string specifid condition
+ * @param[in] DSC  expected string description statement
+ * @param[in] EXTS expected [sized array](@ref sizedarrays) size of list of extension array
+ * @param[in] REF  expected string reference
+ */
+#define CHECK_LYSP_WHEN(NODE, COND, DSC, EXTS, REF) \
+    assert_non_null(NODE); \
+    assert_string_equal((NODE)->cond, COND); \
+    CHECK_STRING((NODE)->dsc, DSC); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    if (REF == NULL) { \
+        assert_null((NODE)->ref); \
+    } else { \
+        assert_non_null((NODE)->ref); \
+        assert_string_equal((NODE)->ref, REF); \
+    }
+
+/**
+ * @brief assert that lysp_restr structure members are correct
+ *
+ * @param[in] NODE pointer to lysp_restr variable
+ * @param[in] ARG_STR expected string. The restriction expression/value
+ * @param[in] DSC     expected descrition
+ * @param[in] EAPPTAG expected string reprezenting error-app-tag value
+ * @param[in] EMSG    expected string reprezenting error message
+ * @param[in] EXTS    expected [sized array](@ref sizedarrays) size of list of extension array
+ * @param[in] REF     expected reference
+ */
+
+#define CHECK_LYSP_RESTR(NODE, ARG_STR, DSC, EAPPTAG, EMSG, EXTS, REF) \
+    assert_non_null(NODE); \
+    assert_non_null((NODE)->arg.mod); \
+    assert_string_equal((NODE)->arg.str, ARG_STR); \
+    CHECK_STRING((NODE)->dsc, DSC); \
+    CHECK_STRING((NODE)->eapptag, EAPPTAG); \
+    CHECK_STRING((NODE)->emsg, EMSG); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    CHECK_STRING((NODE)->ref, REF);
+
+/**
+ * @brief assert that lysp_import structure members are correct
+ *
+ * @param[in] NODE   pointer to lysp_import variable
+ * @param[in] DSC    expected description or NULL
+ * @param[in] EXTS   expected [sized array](@ref sizedarrays) size of list of extensions
+ * @param[in] NAME   expected name of imported module
+ * @param[in] PREFIX expected prefix for the data from the imported schema
+ * @param[in] REF    expected reference
+ * @param[in] REV    expected reprezenting date in format "11-10-2020"
+ */
+#define CHECK_LYSP_IMPORT(NODE, DSC, EXTS, NAME, PREFIX, REF, REV) \
+    assert_non_null(NODE); \
+    CHECK_STRING((NODE)->dsc, DSC); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    assert_string_equal((NODE)->name, NAME); \
+    assert_string_equal((NODE)->prefix, PREFIX); \
+    CHECK_STRING((NODE)->ref, REF); \
+    CHECK_STRING((NODE)->rev, REV); \
+
+/**
+ * @brief assert that lysp_ext structure members are correct
+ *
+ * @param[in] NODE pointer to lysp_ext_instance variable
+ * @param[in] ARGNAME expected argument name
+ * @param[in] COMPILED 0 -> compiled data dosnt exists, 1 -> compiled data exists
+ * @param[in] DSC      expected string reprezent description
+ * @param[in] EXTS     expected [sized array](@ref sizedarrays) size of list of extension instances
+ * @param[in] FLAGS    expected LYS_STATUS_* and LYS_YINELEM_* values (@ref snodeflags)
+ * @param[in] NAME     expected name
+ * @param[in] REF      expected ref
+ */
+#define CHECK_LYSP_EXT(NODE, ARGNAME, COMPILED, DSC, EXTS, FLAGS, NAME, REF) \
+    assert_non_null(NODE); \
+    CHECK_STRING((NODE)->argname, ARGNAME); \
+    CHECK_POINTER((NODE)->compiled, COMPILED); \
+    CHECK_STRING((NODE)->dsc, DSC); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    assert_int_equal((NODE)->flags, FLAGS); \
+    assert_string_equal((NODE)->name, NAME); \
+    CHECK_STRING((NODE)->ref, REF);
+
+/**
+ * @brief assert that lysp_ext_instance structure members are correct
+ *
+ * @param[in] NODE      pointer to lysp_ext_instance variable
+ * @param[in] ARGUMENT  expected optional value of the extension's argument
+ * @param[in] CHILD     0 -> node doesnt have child, 1 -> node have children
+ * @param[in] PARENT_STMT expected value identifying placement of the extension instance
+ * @param[in] PARENT_STMT_INDEX expected indentifi index
+ * @param[in] FORMAT    expected format
+ */
+#define CHECK_LYSP_EXT_INSTANCE(NODE, ARGUMENT, CHILD, PARENT_STMT, PARENT_STMT_INDEX, NAME, FORMAT) \
+    assert_non_null(NODE); \
+    CHECK_STRING((NODE)->argument, ARGUMENT); \
+    CHECK_POINTER((NODE)->child, CHILD); \
+    assert_int_equal((NODE)->parent_stmt, PARENT_STMT); \
+    assert_int_equal((NODE)->parent_stmt_index, PARENT_STMT_INDEX); \
+    assert_string_equal((NODE)->name, NAME); \
+    assert_int_equal((NODE)->format, FORMAT);
+
+/**
+ * @brief assert that lysp_stmt structure members are correct
+ *
+ * @param[in] NODE  pointer to lysp_stmt variable
+ * @param[in] ARG   expected statemet argumet
+ * @param[in] CHILD 0 -> node doesnt have child, 1 -> node have children
+ * @param[in] FLAGS expected statement flags, can be set to LYS_YIN_ATTR
+ * @param[in] KW    expected numeric respresentation of the stmt value
+ * @param[in] NEXT  0 -> pointer is NULL, 1 -> pointer is not null
+ * @param[in] STMS  expected identifier of the statement
+ */
+#define CHECK_LYSP_STMT(NODE, ARG, CHILD, FLAGS, KW, NEXT, STMT) \
+    assert_non_null(NODE); \
+    CHECK_STRING((NODE)->arg, ARG); \
+    CHECK_POINTER((NODE)->child, CHILD); \
+    assert_int_equal((NODE)->flags, FLAGS); \
+    assert_int_equal((NODE)->kw, KW); \
+    CHECK_POINTER((NODE)->next, NEXT); \
+    assert_string_equal((NODE)->stmt, STMT); \
+
+/**
+ * @brief assert that lysp_type_enum structure members are correct
+ *
+ * @param[in] NODE pointer to lysp_type_enum variable
+ * @param[in] DSC   expected description
+ * @param[in] EXTS  expected [sized array](@ref sizedarrays) size of list of the extension instances
+ * @param[in] FLAGS only LYS_STATUS_ and LYS_SET_VALUE values are allowed
+ * @param[in] IFFEATURES expected [sized array](@ref sizedarrays) size of list of the extension instances
+ * @param[in] NAME  expected name
+ * @param[in] REF   expected reference statement
+ * @param[in] VALUE expected enum's value or bit's position
+ */
+#define CHECK_LYSP_TYPE_ENUM(NODE, DSC, EXTS, FLAGS, IFFEATURES, NAME, REF, VALUE) \
+    assert_non_null(NODE); \
+    CHECK_STRING((NODE)->dsc, DSC); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    assert_int_equal((NODE)->flags, FLAGS); \
+    CHECK_ARRAY((NODE)->iffeatures, IFFEATURES); \
+    CHECK_STRING((NODE)->name, NAME); \
+    CHECK_STRING((NODE)->ref, REF); \
+    assert_int_equal(VALUE, (NODE)->value);
+
+/**
+ * @brief assert that lysp_type_enum structure members are correct
+ *
+ * @param[in] NODE pointer to lysp_type variable
+ * @param[in] BASES  expected [sized array](@ref sizedarrays) size of list of indentifiers
+ * @param[in] BITS   expected [sized array](@ref sizedarrays) size of list of bits
+ * @param[in] COMPILED 0 -> pointer to compiled type is null, 1 -> pointer to compilet type is valid
+ * @param[in] ENUMS  expected [sized array](@ref sizedarrays) size of list of enums-stmts
+ * @param[in] EXTS   expected [sized array](@ref sizedarrays) size of list of extension instances
+ * @param[in] FLAGS  expected flags
+ * @param[in] FRACTION_DIGITS expected number of fraction digits decimal64
+ * @param[in] LENGTH expected 0 -> there isnt any restriction on length, 1 -> type is restricted on length (string, binary)
+ * @param[in] NAME   expected name of type
+ * @param[in] PATH   0 -> no pointer to parsed path, 1 -> pointer to parsed path is valid
+ * @param[in] PATTERNS expected [sized array](@ref sizedarrays) size of list of patterns for string
+ * @param[in] PMOD   expected submodule where type is defined 0 -> pointer is null, 1 -> pointer is not null
+ * @param[in] RANGE   expected [sized array](@ref sizedarrays) size of list of range restriction
+ * @param[in] REQUIRE_INSTANCE expected require instance flag
+ * @param[in] TYPES   expected [sized array](@ref sizedarrays) size of list of sub-types
+ */
+#define CHECK_LYSP_TYPE(NODE, BASES, BITS, COMPILED, ENUMS, EXTS, FLAGS, FRACTIONS_DIGITS, \
+                LENGTH, NAME, PATH, PATTERNS, PMOD, RANGE, REQUIRE_INSTANCE, TYPES) \
+    assert_non_null(NODE);\
+    CHECK_ARRAY((NODE)->bases, BASES); \
+    CHECK_ARRAY((NODE)->bits, BITS); \
+    CHECK_POINTER((NODE)->compiled, COMPILED); \
+    CHECK_ARRAY((NODE)->enums, ENUMS); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    assert_int_equal((NODE)->flags, FLAGS); \
+    assert_int_equal((NODE)->fraction_digits, FRACTIONS_DIGITS); \
+    CHECK_POINTER((NODE)->length, LENGTH); \
+    CHECK_STRING((NODE)->name, NAME); \
+    CHECK_POINTER((NODE)->path, PATH); \
+    CHECK_ARRAY((NODE)->patterns, PATTERNS); \
+    CHECK_POINTER((NODE)->pmod, PMOD); \
+    CHECK_POINTER((NODE)->range, RANGE); \
+    assert_int_equal((NODE)->require_instance, REQUIRE_INSTANCE); \
+    CHECK_ARRAY((NODE)->types , TYPES)
+
+/**
+ * @brief assert that lysp_node structure members are correct
+ *
+ * @param[in] NODE  pointer to lysp_node variable
+ * @param[in] DSC   expected description statement
+ * @param[in] EXTS  expected [sized array](@ref sizedarrays) size of list of the extension instances
+ * @param[in] FLAGS [schema node flags](@ref snodeflags)
+ * @param[in] IFFEATURES expected [sized array](@ref sizedarrays) size of list of the extension instances
+ * @param[in] NAME  expected name
+ * @param[in] NEXT  0 pointer is null, 1 pointer is not null
+ * @param[in] NODETYPE  node type LYS_UNKNOWN, LYS_CONTAINER, LYS_CHOICE, LYS_LEAF, LYS_LEAFLIST,
+ *                      LYS_LIST, LYS_ANYXML, LYS_ANYDATA, LYS_CASE, LYS_RPC, LYS_ACTION, LYS_NOTIF,
+ *                      LYS_USES, LYS_INPUT, LYS_OUTPUT, LYS_GROUPING, LYS_AUGMENT
+ * @param[in] PARENT    0-> check if node is root, 1-> check if node is not root
+ * @param[in] REF       expected reference statement
+ * @param[in] WHEN      0-> pointer is null, 1 -> pointer is not null
+ */
+#define CHECK_LYSP_NODE(NODE, DSC, EXTS, FLAGS, IFFEATURES, NAME, NEXT, NODETYPE, PARENT, REF, WHEN) \
+    assert_non_null(NODE); \
+    CHECK_STRING((NODE)->dsc, DSC); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    assert_int_equal((NODE)->flags, FLAGS); \
+    CHECK_ARRAY((NODE)->iffeatures, IFFEATURES); \
+    CHECK_STRING((NODE)->name, NAME); \
+    CHECK_POINTER((NODE)->next, NEXT); \
+    assert_int_equal((NODE)->nodetype, NODETYPE); \
+    CHECK_POINTER((NODE)->parent, PARENT); \
+    CHECK_STRING((NODE)->ref, REF); \
+    CHECK_POINTER(lysp_node_when((struct lysp_node *)NODE), WHEN);
+
+/**
+ * @brief assert that lysp_node structure members are correct
+ *
+ * @param[in] NODE  pointer to lysp_node variable
+ * @param[in] DSC   expected description statement
+ * @param[in] EXTS  expected [sized array](@ref sizedarrays) size of list of the extension instances
+ * @param[in] FLAGS [schema node flags](@ref snodeflags)
+ * @param[in] IFFEATURES expected [sized array](@ref sizedarrays) size of list of the extension instances
+ * @param[in] NAME  expected name
+ * @param[in] NEXT  0 pointer is null, 1 pointer is not null
+ * @param[in] PARENT    0-> check if node is root, 1-> check if node is not root
+ * @param[in] REF       expected reference statement
+ * @param[in] WHEN      0-> pointer is null, 1 -> pointer is not null
+ * @param[in] MUSTS     expected [sized array](@ref sizedarrays) size of list of must restriction
+ * @param[in] UNITS     expected string reprezenting units
+ * @param[in] DFLT      0-> node dosn't have default value. 1 -> node have default value
+ */
+#define CHECK_LYSP_NODE_LEAF(NODE, DSC, EXTS, FLAGS, IFFEATURES, NAME, NEXT, \
+                PARENT, REF, WHEN, MUSTS, UNITS, DFLT) \
+    CHECK_LYSP_NODE(NODE, DSC, EXTS, FLAGS, IFFEATURES, NAME, NEXT, LYS_LEAF, PARENT, REF, WHEN); \
+    CHECK_ARRAY((NODE)->musts, MUSTS); \
+    CHECK_STRING((NODE)->units, UNITS); \
+    CHECK_STRING((NODE)->dflt.str, DFLT);
+
+/**
+ * @brief assert that lysc_notif structure members are correct
+ *
+ * @param[in] NODE    pointer to lysp_notif variable
+ * @param[in] DATA    0 pointer is null, 1 pointer is not null
+ * @param[in] DSC     expected description
+ * @param[in] EXTS    expected [sized array](@ref sizedarrays) size of list of the extension instances
+ * @param[in] FLAGS   [schema node flags](@ref snodeflags)
+ * @param[in] MODULE  0 pointer is null, 1 pointer is not null
+ * @param[in] MUSTS   expected [sized array](@ref sizedarrays) size of list of must restriction
+ * @param[in] NAME    expected name
+ * @param[in] PARENT  0-> check if node is root, 1-> check if node is not root
+ * @param[in] PRIV    0-> pointer is null, 1-> pointer is not null
+ * @param[in] REF     expected reference
+ * @param[in] WHEN    expected [sized array](@ref sizedarrays) size of list of pointers to when statements
+ */
+#define CHECK_LYSC_NOTIF(NODE, DATA, DSC, EXTS, FLAGS, MODULE, MUSTS, NAME, PARENT, PRIV, REF, WHEN) \
+    assert_non_null(NODE); \
+    CHECK_POINTER((NODE)->child, DATA); \
+    CHECK_STRING((NODE)->dsc, DSC); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    assert_int_equal((NODE)->flags, FLAGS); \
+    CHECK_POINTER((NODE)->module, MODULE); \
+    CHECK_ARRAY((NODE)->musts, MUSTS); \
+    assert_string_equal((NODE)->name, NAME); \
+    assert_int_equal((NODE)->nodetype, LYS_NOTIF); \
+    CHECK_POINTER((NODE)->parent, PARENT); \
+    CHECK_POINTER((NODE)->priv, PRIV); \
+    CHECK_STRING((NODE)->ref, REF); \
+    CHECK_ARRAY(lysc_node_when((const struct lysc_node *)NODE), WHEN);
+
+/**
+ * @brief assert that lysc_action_inout structure members are correct
+ *
+ * @param[in] NODE      pointer to lysp_notif variable
+ * @param[in] DATA      0 pointer is null, 1 pointer is not null
+ * @param[in] MUST      expected [sized array](@ref sizedarrays) size of list of must restrictions
+ * @param[in] NODETYPE  LYS_INPUT or LYS_OUTPUT
+ */
+#define CHECK_LYSC_ACTION_INOUT(NODE, DATA, MUST, NODETYPE) \
+    assert_non_null(NODE); \
+    CHECK_POINTER((NODE)->child, DATA); \
+    CHECK_ARRAY((NODE)->musts, MUST); \
+    assert_int_equal((NODE)->nodetype, NODETYPE);
+
+/**
+ * @brief assert that lysc_action structure members are correct
+ *
+ * @param[in] NODE    pointer to lysp_action variable
+ * @param[in] DSC     string description statement
+ * @param[in] EXTS    expected [sized array](@ref sizedarrays) size of list of the extension instances
+ * @param[in] FLAGS   [schema node flags](@ref snodeflags)
+ * @param[in] INPUT_DATA 0 pointer is null, 1 pointer is not null
+ * @param[in] INPUT_MUST expected [sized array](@ref sizedarrays) size of input list of must restrictions
+ * @param[in] INPUT_EXTS expected [sized array](@ref sizedarrays) size of the input extension instances of input
+ * @param[in] MODULE  0 pointer is null, 1 pointer is not null
+ * @param[in] NAME    expected name
+ * @param[in] NODETYPE    LYS_RPC, LYS_ACTION
+ * @param[in] OUTPUT_DATA 0 pointer is null, 1 pointer is not null
+ * @param[in] OUTPUT_MUST expected [sized array](@ref sizedarrays) size of output list of must restrictions
+ * @param[in] OUTPUT_EXTS expected [sized array](@ref sizedarrays) size of the output extension instances of input
+ * @param[in] PARENT  0-> check if node is root, 1-> check if node is not root
+ * @param[in] PRIV    0-> pointer is null, 1-> pointer is not null
+ * @param[in] REF     expected reference
+ * @param[in] WHEN    expected [sized array](@ref sizedarrays) size of list of pointers to when statements
+ */
+#define CHECK_LYSC_ACTION(NODE, DSC, EXTS, FLAGS, INPUT_DATA, INPUT_MUST, INPUT_EXTS, MODULE, NAME, NODETYPE, \
+                OUTPUT_DATA, OUTPUT_MUST, OUTPUT_EXTS, PARENT, PRIV, REF, WHEN) \
+    assert_non_null(NODE); \
+    CHECK_STRING((NODE)->dsc, DSC); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    assert_int_equal((NODE)->flags, FLAGS); \
+    CHECK_LYSC_ACTION_INOUT(&(NODE)->input, INPUT_DATA, INPUT_MUST, LYS_INPUT); \
+    CHECK_ARRAY((NODE)->input.exts, INPUT_EXTS); \
+    CHECK_POINTER((NODE)->module, MODULE); \
+    assert_string_equal((NODE)->name, NAME); \
+    assert_int_equal((NODE)->nodetype, NODETYPE); \
+    CHECK_LYSC_ACTION_INOUT(&(NODE)->output, OUTPUT_DATA, OUTPUT_MUST, LYS_OUTPUT); \
+    CHECK_ARRAY((NODE)->output.exts, OUTPUT_EXTS); \
+    CHECK_POINTER((NODE)->parent, PARENT); \
+    CHECK_POINTER((NODE)->priv, PRIV); \
+    CHECK_STRING((NODE)->ref, REF); \
+    CHECK_ARRAY(lysc_node_when((const struct lysc_node *)NODE), WHEN);
+
+/**
+ * @brief assert that lysc_node structure members are correct
+ *
+ * @param[in] NODE    pointer to lysc_node variable
+ * @param[in] DSC     expected description
+ * @param[in] EXTS    expected [sized array](@ref sizedarrays) size of list of the extension instances
+ * @param[in] FLAGS   [schema node flags](@ref snodeflags)
+ * @param[in] MODULE  0 pointer is null, 1 pointer is not null
+ * @param[in] NAME    expected name
+ * @param[in] NEXT    0 pointer is null, 1 pointer is not null
+ * @param[in] NODETYPE    type of the node  LYS_UNKNOWN, LYS_CONTAINER, LYS_CHOICE, LYS_LEAF,
+ *                    LYS_LEAFLIST, LYS_LIST, LYS_ANYXML, LYS_ANYDATA, LYS_CASE, LYS_RPC,
+ *                    LYS_ACTION, LYS_NOTIF, LYS_USES, LYS_INPUT, LYS_OUTPUT, LYS_GROUPING,
+ *                    LYS_AUGMENT
+ * @param[in] PARENT  0-> check if node is root, 1-> check if node is not root
+ * @param[in] PRIV    0-> pointer is null, 1-> pointer is not null
+ * @param[in] REF     expected reference
+ * @param[in] WHEN    expected [sized array](@ref sizedarrays) size of list of pointers to when statements
+ */
+#define CHECK_LYSC_NODE(NODE, DSC, EXTS, FLAGS, MODULE, NAME, NEXT, NODETYPE, PARENT, PRIV, REF, WHEN) \
+    assert_non_null(NODE); \
+    CHECK_STRING((NODE)->dsc, DSC); \
+    CHECK_ARRAY((NODE)->exts, EXTS); \
+    assert_int_equal((NODE)->flags, FLAGS); \
+    CHECK_POINTER((NODE)->module, MODULE); \
+    assert_string_equal((NODE)->name, NAME); \
+    CHECK_POINTER((NODE)->next, NEXT); \
+    assert_int_equal((NODE)->nodetype, NODETYPE); \
+    CHECK_POINTER((NODE)->parent, PARENT); \
+    assert_non_null((NODE)->prev); \
+    CHECK_POINTER((NODE)->priv, PRIV); \
+    CHECK_STRING((NODE)->ref, REF); \
+    CHECK_ARRAY(lysc_node_when((const struct lysc_node *)NODE), WHEN);
+
+/**
+ * @brief assert that lysc_node_leaf structure members are correct
+ *
+ * @param[in] NODE    pointer to lysc_node variable
+ * @param[in] DSC     expected description
+ * @param[in] EXTS    expected [sized array](@ref sizedarrays) size of list of the extension instances
+ * @param[in] FLAGS   [schema node flags](@ref snodeflags)
+ * @param[in] MODULE  0 pointer is null, 1 pointer is not null
+ * @param[in] NAME    expected name
+ * @param[in] NEXT    0 pointer is null, 1 pointer is not null
+ * @param[in] PARENT  0-> check if node is root, 1-> check if node is not root
+ * @param[in] PRIV    0-> pointer is null, 1-> pointer is not null
+ * @param[in] REF     expected reference
+ * @param[in] ACTIONS 1 if is set pointer to structure lysc_node_action other 0
+ * @param[in] CHILD   1 if is set pointer to child other 0
+ * @param[in] MAX     possible maximum elements in list
+ * @param[in] MIN     possible minimum elements in list
+ * @param[in] MUSTS   [sized array](@ref sizedarrays) number of must node elements in array
+ * @param[in] NOTIFS  1 if is set pointer to any notifs node
+ * @param[in] UNIQUES [sized array](@ref sizedarrays) number of unique nodes element in array
+ * @param[in] WHEN    [sized array](@ref sizedarrays) size of when node array
+ */
+#define CHECK_LYSC_NODE_LIST(NODE, DSC, EXTS, FLAGS, MODULE, NAME, NEXT, \
+                PARENT, PRIV, REF, ACTIONS, CHILD, MAX, MIN, MUSTS, NOTIFS, UNIQUES, WHEN) \
+        CHECK_LYSC_NODE(NODE, DSC, EXTS, FLAGS, MODULE, NAME, NEXT, LYS_LIST, PARENT, PRIV, REF, WHEN); \
+        CHECK_POINTER((NODE)->actions, ACTIONS); \
+        CHECK_POINTER((NODE)->child, CHILD); \
+        assert_int_equal((NODE)->max, MAX); \
+        assert_int_equal((NODE)->min, MIN); \
+        CHECK_ARRAY((NODE)->musts, MUSTS); \
+        CHECK_POINTER((NODE)->notifs, NOTIFS); \
+        CHECK_ARRAY((NODE)->uniques, UNIQUES); \
+        CHECK_ARRAY(lysc_node_when((const struct lysc_node *)NODE), WHEN)
+
+/**
+ * @brief assert that lysc_node_leaf structure members are correct
+ *
+ * @param[in] NODE    pointer to lysc_node variable
+ * @param[in] DSC     expected description
+ * @param[in] EXTS    expected [sized array](@ref sizedarrays) size of list of the extension instances
+ * @param[in] FLAGS   [schema node flags](@ref snodeflags)
+ * @param[in] MODULE  0 pointer is null, 1 pointer is not null
+ * @param[in] NAME    expected name
+ * @param[in] NEXT    0 pointer is null, 1 pointer is not null
+ * @param[in] PARENT  0-> check if node is root, 1-> check if node is not root
+ * @param[in] PRIV    0-> pointer is null, 1-> pointer is not null
+ * @param[in] REF     expected reference
+ * @param[in] WHEN    expected [sized array](@ref sizedarrays) size of list of pointers to when statements
+ * @param[in] MUSTS     expected [sized array](@ref sizedarrays) size of list of must restriction
+ * @param[in] UNITS     expected string reprezenting units
+ * @param[in] DFLT      0-> node dosn't have default value. 1 -> node have default value
+ */
+#define CHECK_LYSC_NODE_LEAF(NODE, DSC, EXTS, FLAGS, MODULE, NAME, NEXT, \
+                PARENT, PRIV, REF, WHEN, MUSTS, UNITS, DFLT) \
+    CHECK_LYSC_NODE(NODE, DSC, EXTS, FLAGS, MODULE, NAME, NEXT, LYS_LEAF, PARENT, PRIV, REF, WHEN); \
+    CHECK_ARRAY((NODE)->musts, MUSTS); \
+    assert_non_null((NODE)->type); \
+    CHECK_STRING((NODE)->units, UNITS); \
+    CHECK_POINTER((NODE)->dflt, DFLT);
+
+/**
+ * @brief assert that lyd_meta structure members are correct
+ *
+ * @param[in] NODE       pointer to lyd_meta variable
+ * @param[in] ANNOTATION 0 pointer is null, 1 pointer is not null
+ * @param[in] NAME       expected name
+ * @param[in] NEXT       0 pointer is null, 1 pointer is not null
+ * @param[in] TYPE_VAL value type. EMPTY, UNION, BITS, INST, ENUM, INT8, INT16, UINT8, STRING, LEAFREF, DEC64, BINARY, BOOL, IDENT
+ *                     part of text reprezenting LY_DATA_TYPE.
+ * @param[in] ...              ::CHECK_LYD_VALUE
+ */
+#define CHECK_LYD_META(NODE, ANNOTATION, NAME, NEXT, PARENT, TYPE_VAL, ...) \
+    assert_non_null(NODE); \
+    CHECK_POINTER((NODE)->annotation, ANNOTATION); \
+    assert_string_equal((NODE)->name, NAME); \
+    CHECK_POINTER((NODE)->next, NEXT); \
+    CHECK_POINTER((NODE)->parent, PARENT); \
+    CHECK_LYD_VALUE((NODE)->value, TYPE_VAL, __VA_ARGS__);
+
+/**
+ * @brief assert that lyd_node_term structure members are correct
+ *
+ * @param[in] NODE             pointer to lyd_node_term variable
+ * @param[in] FLAGS            expected [data node flags](@ref dnodeflags)
+ * @param[in] META             0 -> meta is not prezent, 1 -> meta is prezent
+ * @param[in] NEXT             0 -> next node is not prezent, 1 -> next node is prezent
+ * @param[in] TYPE_VAL value type. EMPTY, UNION, BITS, INST, ENUM, INT8, INT16, UINT8, STRING, LEAFREF, DEC64, BINARY, BOOL, IDENT
+ *                     part of text reprezenting LY_DATA_TYPE.
+ * @param[in] ...              ::CHECK_LYD_VALUE
+ */
+#define CHECK_LYD_NODE_TERM(NODE, FLAGS, META, NEXT, PARENT, SCHEMA, VALUE_TYPE, ...) \
+    assert_non_null(NODE); \
+    assert_int_equal((NODE)->flags, FLAGS); \
+    CHECK_POINTER((NODE)->meta, META); \
+    CHECK_POINTER((NODE)->next, NEXT); \
+    CHECK_POINTER((NODE)->parent, PARENT); \
+    assert_non_null((NODE)->prev); \
+    CHECK_POINTER((NODE)->schema, SCHEMA); \
+    CHECK_LYD_VALUE((NODE)->value, VALUE_TYPE, __VA_ARGS__);
+
+/**
+ * @brief assert that lyd_node_any structure members are correct
+ *
+ * @param[in] NODE       pointer to lyd_node_term variable
+ * @param[in] FLAGS      expected [data node flags](@ref dnodeflags)
+ * @param[in] META       0 meta isnt present , 1 meta is present
+ * @param[in] PARENT     0 it is root node , 1 node have parent
+ * @param[in] VALUE_TYPE value type ::lyd_node_any.value
+ */
+#define CHECK_LYD_NODE_ANY(NODE, FLAGS, META, PARENT, VALUE_TYPE) \
+    assert_non_null(NODE); \
+    assert_int_equal((NODE)->flags, FLAGS); \
+    CHECK_POINTER((NODE)->meta, META); \
+    CHECK_POINTER((NODE)->meta, PARENT); \
+    assert_non_null((NODE)->prev); \
+    assert_non_null((NODE)->schema); \
+    assert_int_equal((NODE)->value_type, VALUE_TYPE);
+
+/**
+ * @brief assert that lyd_node_opaq structure members are correct
+ *
+ * @param[in] NODE     pointer to lyd_node_opaq variable
+ * @param[in] ATTR     0 if pointer is null ,1 if pointer is not null
+ * @param[in] CHILD    0 if pointer is null ,1 if pointer is not null
+ * @param[in] FORMAT   LY_PREF_XML or LY_PREF_JSON
+ * @param[in] VAL_PREFS 0 if pointer is null ,1 if pointer is not null
+ * @param[in] NAME     expected name
+ * @param[in] value    expected orignal value
+ */
+#define CHECK_LYD_NODE_OPAQ(NODE, ATTR, CHILD, FORMAT, NAME, NEXT, PARENT, PREFIX, VAL_PREFS, VALUE) \
+    assert_non_null(NODE); \
+    CHECK_POINTER((NODE)->attr, ATTR); \
+    CHECK_POINTER((NODE)->child, CHILD); \
+    assert_ptr_equal((NODE)->ctx, UTEST_LYCTX); \
+    assert_int_equal((NODE)->flags, 0); \
+    assert_true((NODE)->format == FORMAT); \
+    assert_int_equal((NODE)->hash, 0); \
+    assert_string_equal((NODE)->name.name, NAME); \
+    assert_non_null((NODE)->prev); \
+    assert_null((NODE)->schema); \
+    CHECK_POINTER((NODE)->val_prefix_data, VAL_PREFS); \
+    assert_string_equal((NODE)->value, VALUE);
+
+/**
+ * @brief assert that lyd_node_opaq structure members are correct
+ *
+ * @param[in] NODE     pointer to lyd_node_opaq variable
+ * @param[in] CHILD    1 if node has children other 0
+ * @param[in] HILD_HT  1 if node has children hash table other 0
+ * @param[in] META     1 if node has metadata other 0
+ * @param[in] FLAGS    expected flag
+ * @param[in] NEXT     1 if next node is present other 0
+ * @param[in] PARENT   1 if node has parent other 0
+ * @param[in] PRIV     1 if node has private data other 0
+ * @param[in] SCHEMA   1 if node has schema other 0
+*/
+#define CHECK_LYD_NODE_INNER(NODE, CHILD, CHILD_HT, META, FLAGS, NEXT, PARENT, PRIV, SCHEMA) \
+    assert_non_null(NODE); \
+    CHECK_POINTER((NODE)->child, CHILD); \
+    CHECK_POINTER((NODE)->children_ht, CHILD_HT); \
+    CHECK_POINTER((NODE)->meta, META); \
+    assert_int_equal((NODE)->flags, FLAGS); \
+    CHECK_POINTER((NODE)->parent, PARENT); \
+    assert_non_null((NODE)->prev); \
+    CHECK_POINTER((NODE)->next, NEXT); \
+    CHECK_POINTER((NODE)->priv, PRIV); \
+    CHECK_POINTER((NODE)->schema, SCHEMA)
+
+/**
+ * @brief assert that lyd_value structure members are correct
+ *
+ * @param[in] NODE     lyd_value
+ * @param[in] TYPE_VAL value type. EMPTY, UNION, BITS, INST, ENUM, INT8, INT16, UINT8, STRING, LEAFREF, DEC64, BINARY, BOOL, IDENT
+ *                     part of text reprezenting LY_DATA_TYPE.
+ * @param[in] ...      Unspecified parameters. Type and numbers of parameters are specified
+ *                     by type of value. These parameters are passed to macro
+ *                     CHECK_LYD_VALUE_ ## TYPE_VAL.
+ */
+#define CHECK_LYD_VALUE(NODE, TYPE_VAL, ...) \
+    CHECK_LYD_VALUE_ ## TYPE_VAL (NODE, __VA_ARGS__);
+
+/*
+ * LYD VALUES CHECKING SPECIALIZATION
+ */
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type EMPTY
+ *        Example CHECK_LYD_VALUE(node->value, EMPTY, "");
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ */
+#define CHECK_LYD_VALUE_EMPTY(NODE, CANNONICAL_VAL) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal((NODE).realtype->basetype, LY_TYPE_EMPTY);
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type UNION
+ *        Example CHECK_LYD_VALUE(node->value, UNION, "12", INT8, "12", 12);
+ * @warning   type of subvalue cannot be UNION. Example of calling
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ * @param[in] TYPE_VAL value type. EMPTY, UNION, BITS, INST, ENUM, INT8, INT16, UINT8, STRING, LEAFREF, DEC64, BINARY, BOOL, IDENT
+ * @param[in] ...      Unspecified parameters. Type and numbers of parameters are specified
+ *                     by type of value. These parameters are passed to macro
+ *                     CHECK_LYD_VALUE_ ## TYPE_VAL.
+ */
+#define CHECK_LYD_VALUE_UNION(NODE, CANNONICAL_VAL, TYPE_VAL, ...) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal(LY_TYPE_UNION, (NODE).realtype->basetype); \
+    assert_non_null((NODE).subvalue); \
+    assert_non_null((NODE).subvalue->prefix_data); \
+    CHECK_LYD_VALUE_ ## TYPE_VAL ((NODE).subvalue->value, __VA_ARGS__)
+
+/**
+ * @brief Internal macro. Get 1st variadic argument.
+ */
+#define _GETARG1(ARG1, ...) ARG1
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type BITS
+ *        Example arr[] = {"a", "b"}; CHECK_LYD_VALUE(node->value, BITS, "a b", arr);
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ * @param[in] VALUE          expected array of bits names
+ */
+#define CHECK_LYD_VALUE_BITS(NODE, ...) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, _GETARG1(__VA_ARGS__, DUMMY)); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal(LY_TYPE_BITS, (NODE).realtype->basetype); \
+    { \
+        const char *arr[] = { __VA_ARGS__ }; \
+        LY_ARRAY_COUNT_TYPE arr_size = (sizeof(arr) / sizeof(arr[0])) - 1; \
+        struct lyd_value_bits *_val; \
+        LYD_VALUE_GET(&(NODE), _val); \
+        assert_int_equal(arr_size, LY_ARRAY_COUNT(_val->items)); \
+        for (LY_ARRAY_COUNT_TYPE it = 0; it < arr_size; it++) { \
+            assert_string_equal(arr[it + 1], _val->items[it]->name); \
+        } \
+    }
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type INST
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ * @param[in] VALUE          expected array of enum ly_path_pred_type
+ * @brief Example enum arr[] = {0x0, 0x1}; CHECK_LYD_VALUE(node->value, INST, "test/d", arr);
+ */
+#define CHECK_LYD_VALUE_INST(NODE, CANNONICAL_VAL, VALUE) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal(LY_TYPE_INST, (NODE).realtype->basetype); \
+    { \
+        LY_ARRAY_COUNT_TYPE arr_size = sizeof(VALUE) / sizeof(VALUE[0]); \
+        assert_int_equal(arr_size, LY_ARRAY_COUNT((NODE).target)); \
+        for (LY_ARRAY_COUNT_TYPE it = 0; it < arr_size; it++) { \
+            assert_int_equal(VALUE[it], (NODE).target[it].pred_type); \
+        } \
+    }
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type ENUM.
+ *        Example CHECK_LYD_VALUE(node->value, ENUM, "item_name", "item_name");
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ * @param[in] VALUE          expected enum item name
+ */
+#define CHECK_LYD_VALUE_ENUM(NODE, CANNONICAL_VAL, VALUE) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal(LY_TYPE_ENUM, (NODE).realtype->basetype); \
+    assert_string_equal(VALUE, (NODE).enum_item->name);
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type INT8
+ *        Example CHECK_LYD_VALUE(node->value, INT8, "12", 12);
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ * @param[in] VALUE          expected inteager value (-128 to 127).
+ */
+#define CHECK_LYD_VALUE_INT8(NODE, CANNONICAL_VAL, VALUE) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal(LY_TYPE_INT8, (NODE).realtype->basetype); \
+    assert_int_equal(VALUE, (NODE).int8);
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type INT16
+ *        Example CHECK_LYD_VALUE(node->value, INT8, "12", 12);
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ * @param[in] VALUE          expected inteager value.
+ */
+#define CHECK_LYD_VALUE_INT16(NODE, CANNONICAL_VAL, VALUE) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal(LY_TYPE_INT16, (NODE).realtype->basetype); \
+    assert_int_equal(VALUE, (NODE).int16);
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type UINT8.
+ *        Example CHECK_LYD_VALUE(node->value, UINT8, "12", 12);
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ * @param[in] VALUE          expected inteager (0 to 255).
+ */
+#define CHECK_LYD_VALUE_UINT8(NODE, CANNONICAL_VAL, VALUE) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal(LY_TYPE_UINT8, (NODE).realtype->basetype); \
+    assert_int_equal(VALUE, (NODE).uint8);
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type UINT32.
+ *        Example CHECK_LYD_VALUE(node->value, UINT32, "12", 12);
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ * @param[in] VALUE          expected inteager (0 to MAX_UINT32).
+ */
+#define CHECK_LYD_VALUE_UINT32(NODE, CANNONICAL_VAL, VALUE) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal(LY_TYPE_UINT32, (NODE).realtype->basetype); \
+    assert_int_equal(VALUE, (NODE).uint32);
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type STRING.
+ *        Example CHECK_LYD_VALUE(node->value, STRING, "text");
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ */
+#define CHECK_LYD_VALUE_STRING(NODE, CANNONICAL_VAL) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal(LY_TYPE_STRING, (NODE).realtype->basetype);
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type LEAFREF
+ *        Example CHECK_LYD_VALUE(node->value, LEAFREF, "");
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ */
+#define CHECK_LYD_VALUE_LEAFREF(NODE, CANNONICAL_VAL) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal(LY_TYPE_LEAFREF, (NODE).realtype->basetype); \
+    assert_non_null((NODE).ptr)
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type DEC64
+ *        Example CHECK_LYD_VALUE(node->value, DEC64, "125", 125);
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ * @param[in] VALUE          expected value 64bit inteager
+*/
+#define CHECK_LYD_VALUE_DEC64(NODE, CANNONICAL_VAL, VALUE) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal(LY_TYPE_DEC64, (NODE).realtype->basetype); \
+    assert_int_equal(VALUE, (NODE).dec64);
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type BINARY.
+ *        Example CHECK_LYD_VALUE(node->value, BINARY, "aGVs\nbG8=");
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ * @param[in] VALUE          expected value data
+ * @param[in] SIZE           expected value data size
+*/
+#define CHECK_LYD_VALUE_BINARY(NODE, CANNONICAL_VAL, VALUE, SIZE) \
+    { \
+        struct lyd_value_binary *_val; \
+        LYD_VALUE_GET(&(NODE), _val); \
+        assert_int_equal(_val->size, SIZE); \
+        assert_int_equal(0, memcmp(_val->data, VALUE, SIZE)); \
+        assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+        assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+        assert_non_null((NODE).realtype); \
+        assert_int_equal(LY_TYPE_BINARY, (NODE).realtype->basetype); \
+    }
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type BOOL.
+ *        Example CHECK_LYD_VALUE(node->value, BOOL, "true", 1);
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ * @param[in] VALUE          expected boolean value 0,1
+*/
+#define CHECK_LYD_VALUE_BOOL(NODE, CANNONICAL_VAL, VALUE) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal(LY_TYPE_BOOL, (NODE).realtype->basetype); \
+    assert_int_equal(VALUE, (NODE).boolean);
+
+/**
+ * @brief Internal macro. Assert that lyd_value structure members are correct. Lyd value is type IDENT.
+ *        Example CHECK_LYD_VALUE(node->value, IDENT, "types:gigabit-ethernet", "gigabit-ethernet");
+ *
+ * @param[in] NODE           lyd_value variable
+ * @param[in] CANNONICAL_VAL expected cannonical value
+ * @param[in] VALUE          expected ident name
+*/
+#define CHECK_LYD_VALUE_IDENT(NODE, CANNONICAL_VAL, VALUE) \
+    assert_non_null((NODE).realtype->plugin->print(UTEST_LYCTX, &(NODE), LY_VALUE_CANON, NULL, NULL, NULL)); \
+    assert_string_equal((NODE)._canonical, CANNONICAL_VAL); \
+    assert_non_null((NODE).realtype); \
+    assert_int_equal(LY_TYPE_IDENT, (NODE).realtype->basetype); \
+    assert_string_equal(VALUE, (NODE).ident->name);
+
+/**
+ * @brief Macro testing parser when parsing incorrect module;
+ *
+ * @param[in] DATA     String storing the schema module representation.
+ * @param[in] FORMAT   Schema format of the @p DATA
+ * @param[in] FEATURES Array of module's features to enable
+ * @param[in] RET_VAL  ly_in_new_memory return error value
+ */
+#define UTEST_INVALID_MODULE(DATA, FORMAT, FEATURES, RET_VAL) \
+    { \
+        struct lys_module *mod; \
+        assert_int_equal(LY_SUCCESS, ly_in_new_memory(DATA, &_UC->in)); \
+        assert_int_equal(RET_VAL, lys_parse(_UC->ctx, _UC->in, FORMAT, FEATURES, &mod)); \
+        assert_null(mod); \
+    } \
+    ly_in_free(_UC->in, 0); \
+    _UC->in = NULL; \
+
+/**
+ * @brief Add module (from a string) into the used libyang context.
+ *
+ * @param[in] DATA     String storing the schema module representation.
+ * @param[in] FORMAT   Schema format of the @p DATA
+ * @param[in] FEATURES Array of module's features to enable
+ * @param[out] MOD     Optional parameter as a pointer to variable to store the resulting module.
+ */
+#define UTEST_ADD_MODULE(DATA, FORMAT, FEATURES, MOD) \
+    assert_int_equal(LY_SUCCESS, ly_in_new_memory(DATA, &_UC->in)); \
+    { \
+        LY_ERR __r = lys_parse(_UC->ctx, _UC->in, FORMAT, FEATURES, MOD); \
+        if (__r != LY_SUCCESS) { \
+            print_message("[  MSG     ] Module parsing failed:\n"); \
+            for (struct ly_err_item *e = ly_err_first(_UC->ctx); e; e = e->next) { \
+                print_message("[  MSG     ] \t%s Path %s\n", e->msg, e->path); \
+            } \
+            fail(); \
+        } \
+    } \
+    ly_in_free(_UC->in, 0); \
+    _UC->in = NULL
+
+/**
+ * @brief Internal macro to compare error info record with the expected error message and path.
+ * If NULL is provided as MSG, no error info record (NULL) is expected.
+ *
+ * @param[in] ERR Error information record from libyang context.
+ * @param[in] MSG Expected error message.
+ * @param[in] PATH Expected error path.
+ */
+#define _CHECK_LOG_CTX(ERR, MSG, PATH) \
+    if (!MSG) { \
+        assert_null(ERR); \
+    } else { \
+        assert_non_null(ERR); \
+        CHECK_STRING((ERR)->msg, MSG); \
+        CHECK_STRING((ERR)->path, PATH); \
+    }
+
+/**`
+ * @brief Internal macro to check the last libyang's context error.
+ */
+#define _CHECK_LOG_CTX1(MSG, PATH) \
+    _CHECK_LOG_CTX(ly_err_last(_UC->ctx), MSG, PATH)
+
+/**
+ * @brief Internal macro to check the last two libyang's context error.
+ */
+#define _CHECK_LOG_CTX2(MSG1, PATH1, MSG2, PATH2) \
+        _CHECK_LOG_CTX(ly_err_last(_UC->ctx), MSG1, PATH1); \
+        _CHECK_LOG_CTX(ly_err_last(_UC->ctx)->prev, MSG2, PATH2)
+
+/**
+ * @brief Internal macro to check the last three libyang's context error.
+ */
+#define _CHECK_LOG_CTX3(MSG1, PATH1, MSG2, PATH2, MSG3, PATH3) \
+        _CHECK_LOG_CTX2(MSG1, PATH1, MSG2, PATH2); \
+        _CHECK_LOG_CTX(ly_err_last(_UC->ctx)->prev->prev, MSG3, PATH3)
+
+/**
+ * @brief Internal macro to check the last three libyang's context error.
+ */
+#define _CHECK_LOG_CTX4(MSG1, PATH1, MSG2, PATH2, MSG3, PATH3, MSG4, PATH4) \
+        _CHECK_LOG_CTX3(MSG1, PATH1, MSG2, PATH2, MSG3, PATH3); \
+        _CHECK_LOG_CTX(ly_err_last(_UC->ctx)->prev->prev->prev, MSG4, PATH4)
+
+/**
+ * @brief Internal macro to check the last three libyang's context error.
+ */
+#define _CHECK_LOG_CTX5(MSG1, PATH1, MSG2, PATH2, MSG3, PATH3, MSG4, PATH4, MSG5, PATH5) \
+        _CHECK_LOG_CTX4(MSG1, PATH1, MSG2, PATH2, MSG3, PATH3, MSG4, PATH4); \
+        _CHECK_LOG_CTX(ly_err_last(_UC->ctx)->prev->prev->prev->prev, MSG5, PATH5)
+
+/**
+ * @brief Internal macro to check the last three libyang's context error.
+ */
+#define _CHECK_LOG_CTX6(MSG1, PATH1, MSG2, PATH2, MSG3, PATH3, MSG4, PATH4, MSG5, PATH5, MSG6, PATH6) \
+        _CHECK_LOG_CTX5(MSG1, PATH1, MSG2, PATH2, MSG3, PATH3, MSG4, PATH4, MSG5, PATH5); \
+        _CHECK_LOG_CTX(ly_err_last(_UC->ctx)->prev->prev->prev->prev->prev, MSG6, PATH6)
+
+/**
+ * @brief Internal macro to check the last three libyang's context error.
+ */
+#define _CHECK_LOG_CTX7(MSG1, PATH1, MSG2, PATH2, MSG3, PATH3, MSG4, PATH4, MSG5, PATH5, MSG6, PATH6, MSG7, PATH7) \
+        _CHECK_LOG_CTX6(MSG1, PATH1, MSG2, PATH2, MSG3, PATH3, MSG4, PATH4, MSG5, PATH5, MSG6, PATH6); \
+        _CHECK_LOG_CTX(ly_err_last(_UC->ctx)->prev->prev->prev->prev->prev->prev, MSG7, PATH7)
+
+/**
+ * @brief Internal macro to check the last three libyang's context error.
+ */
+#define _CHECK_LOG_CTX8(MSG1, PATH1, MSG2, PATH2, MSG3, PATH3, MSG4, PATH4, MSG5, PATH5, MSG6, PATH6, MSG7, PATH7, MSG8, PATH8) \
+        _CHECK_LOG_CTX7(MSG1, PATH1, MSG2, PATH2, MSG3, PATH3, MSG4, PATH4, MSG5, PATH5, MSG6, PATH6, MSG7, PATH7); \
+        _CHECK_LOG_CTX(ly_err_last(_UC->ctx)->prev->prev->prev->prev->prev->prev->prev, MSG8, PATH8)
+
+/**
+ * @brief Internal helper macro to select _CHECK_LOG_CTX* macro according to the provided parameters.
+ */
+#define _GET_CHECK_LOG_MACRO(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, NAME, ...) NAME
+
+/**
+ * @brief Check expected error(s) in libyang context.
+ *
+ * Macro has variadic parameters expected to be provided in pairs of error message and error path starting
+ * from the latest error. Current limit is checking at most 3 last errors. After checking, macro cleans up
+ * all the errors from the libyang context.
+ *
+ * @param[in] MSG Expected error message.
+ * @param[in] PATH Expected error path.
+ */
+#define CHECK_LOG_CTX(...) \
+    _GET_CHECK_LOG_MACRO(__VA_ARGS__, _CHECK_LOG_CTX8, _INVAL, _CHECK_LOG_CTX7, _INVAL, \
+            _CHECK_LOG_CTX6, _INVAL, _CHECK_LOG_CTX5, _INVAL, _CHECK_LOG_CTX4, _INVAL, \
+            _CHECK_LOG_CTX3, _INVAL, _CHECK_LOG_CTX2, _INVAL, _CHECK_LOG_CTX1, DUMMY)(__VA_ARGS__); \
+    ly_err_clean(_UC->ctx, NULL)
+
+/**
+ * @brief Check expected error in libyang context including error-app-tag.
+ *
+ * @param[in] MSG Expected error message.
+ * @param[in] PATH Expected error path.
+ * @param[in] APPTAG Expected error-app-tag.
+ */
+#define CHECK_LOG_CTX_APPTAG(MSG, PATH, APPTAG) \
+    if (!MSG) { \
+        assert_null(ly_err_last(_UC->ctx)); \
+    } else { \
+        assert_non_null(ly_err_last(_UC->ctx)); \
+        CHECK_STRING(ly_err_last(_UC->ctx)->msg, MSG); \
+        CHECK_STRING(ly_err_last(_UC->ctx)->path, PATH); \
+        CHECK_STRING(ly_err_last(_UC->ctx)->apptag, APPTAG); \
+    } \
+    ly_err_clean(_UC->ctx, NULL)
+
+/**
+ * @brief Clean up the logging callback's storage.
+ */
+#define UTEST_LOG_CLEAN \
+    free(_UC->err_msg); \
+    free(_UC->err_path); \
+    _UC->err_msg = NULL; \
+    _UC->err_path = NULL;
+
+/**
+ * @brief Check expected error directly logged via logging callback.
+ * Useful mainly for messages logged by functions without access to libyang context.
+ * @param[in] MSG Expected error message.
+ * @param[in] PATH Expected error path.
+ */
+#define CHECK_LOG(MSG, PATH) \
+    CHECK_STRING(_UC->err_msg, MSG); \
+    CHECK_STRING(_UC->err_path, PATH); \
+    UTEST_LOG_CLEAN
+
+#ifdef _UTEST_MAIN_
+/*
+ * Functions inlined into each C source file including this header with _UTEST_MAIN_ defined
+ */
+
+/**
+ * @brief Global variable holding the tests context to simplify access to it.
+ */
+struct utest_context *current_utest_context;
+
+/* set to 0 to printing error messages to stderr instead of checking them in code */
+#define ENABLE_LOGGER_CHECKING 1
+
+/**
+ * @brief Logging callback for libyang.
+ */
+static void
+_utest_logger(LY_LOG_LEVEL level, const char *msg, const char *path)
+{
+    (void) level; /* unused */
+
+    if (ENABLE_LOGGER_CHECKING == 0) {
+        printf("\tERROR:\n\t\tMESSAGE: %s\n\t\tPATH: %s\n\t\tLEVEL: %i\n", msg, path, level);
+    } else {
+        free(current_utest_context->err_msg);
+        current_utest_context->err_msg = msg ? strdup(msg) : NULL;
+        free(current_utest_context->err_path);
+        current_utest_context->err_path = path ? strdup(path) : NULL;
+    }
+}
+
+/**
+ * @brief Generic utest's setup
+ */
+static int
+utest_setup(void **state)
+{
+    char *cur_tz;
+
+    /* setup the logger */
+    ly_set_log_clb(_utest_logger, 1);
+    ly_log_options(LY_LOLOG | LY_LOSTORE);
+
+    current_utest_context = calloc(1, sizeof *current_utest_context);
+    assert_non_null(current_utest_context);
+    *state = current_utest_context;
+
+    /* libyang context */
+    assert_int_equal(LY_SUCCESS, ly_ctx_new(NULL, 0, &current_utest_context->ctx));
+
+    /* clean all errors from the setup - usually warnings regarding the plugins directories */
+    UTEST_LOG_CLEAN;
+
+    /* backup timezone, if any */
+    cur_tz = getenv("TZ");
+    if (cur_tz) {
+        current_utest_context->orig_tz = strdup(cur_tz);
+    }
+
+    /* set CET */
+    setenv("TZ", "CET+02:00", 1);
+
+    return 0;
+}
+
+/**
+ * @brief macro to include generic utest's setup into the test-specific setup.
+ *
+ * Place at the beginning of the test-specific setup
+ */
+#define UTEST_SETUP \
+    assert_int_equal(0, utest_setup(state))
+
+/**
+ * @brief Generic utest's teardown
+ */
+static int
+utest_teardown(void **state)
+{
+    *state = NULL;
+
+    /* libyang context */
+    ly_ctx_destroy(current_utest_context->ctx);
+
+    if (current_utest_context->orig_tz) {
+        /* restore TZ */
+        setenv("TZ", current_utest_context->orig_tz, 1);
+    }
+
+    /* utest context */
+    ly_in_free(current_utest_context->in, 0);
+    free(current_utest_context->err_msg);
+    free(current_utest_context->err_path);
+    free(current_utest_context->orig_tz);
+    free(current_utest_context);
+    current_utest_context = NULL;
+
+    return 0;
+}
+
+/**
+ * @brief macro to include generic utest's teardown into the test-specific teardown.
+ *
+ * Place at the end of the test-specific teardown
+ */
+#define UTEST_TEARDOWN \
+    assert_int_equal(0, utest_teardown(state))
+
+/**
+ * @brief Internal macro for utest setup with test-specific setup and teardown
+ */
+#define _UTEST_SETUP_TEARDOWN(FUNC, SETUP, TEARDOWN) \
+    cmocka_unit_test_setup_teardown(FUNC, SETUP, TEARDOWN)
+
+/**
+ * @brief Internal macro for utest setup with test-specific setup and generic teardown
+ */
+#define _UTEST_SETUP(FUNC, SETUP) \
+    cmocka_unit_test_setup_teardown(FUNC, SETUP, utest_teardown)
+
+/**
+ * @brief Internal macro for utest setup with generic setup and teardown
+ */
+#define _UTEST(FUNC) \
+    cmocka_unit_test_setup_teardown(FUNC, utest_setup, utest_teardown)
+
+/**
+ * @brief Internal helper macro to select _UTEST* macro according to the provided parameters.
+ */
+#define _GET_UTEST_MACRO(_1, _2, _3, NAME, ...) NAME
+
+/**
+ * @brief Macro to specify test function using utest environment. Macro has variadic parameters
+ * to provide test-specific setup/teardown functions:
+ *
+ * UTEST(test_func) - only implicit setup and teardown functions are used
+ * UTEST(test_func, setup) - implicit teardown but own setup
+ * UTEST(test_func, setup, teardown) - both setup and teardown are test-specific
+ */
+#define UTEST(...) \
+    _GET_UTEST_MACRO(__VA_ARGS__, _UTEST_SETUP_TEARDOWN, _UTEST_SETUP, _UTEST, DUMMY)(__VA_ARGS__)
+
+#else /* _UTEST_MAIN_ */
+
+extern struct utest_context *current_utest_context;
+
+#endif /* _UTEST_MAIN_ */
+
+#endif /* _UTESTS_H_ */