Adding upstream version 2.1.30.upstream/2.1.30

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

1 files changed, 690 insertions, 0 deletions

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);
+}