Adding upstream version 1:9.16.44.upstream/1%9.16.44 upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
author: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-27 07:24:22 +0000
committer: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-27 07:24:22 +0000
commit: 45d6379135504814ab723b57f0eb8be23393a51d (patch)
tree: d4f2ec4acca824a8446387a758b0ce4238a4dffa /lib/isc/tests
parent: Initial commit. (diff)
download: bind9-upstream.tar.xz
bind9-upstream.zip
38 files changed, 15986 insertions, 0 deletions
diff --git a/lib/isc/tests/Kyuafile b/lib/isc/tests/Kyuafile
new file mode 100644
index 0000000..89b962c
--- /dev/null
+++ b/lib/isc/tests/Kyuafile
@@ -0,0 +1,43 @@
+-- Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+--
+-- SPDX-License-Identifier: MPL-2.0
+--
+-- This Source Code Form is subject to the terms of the Mozilla Public
+-- License, v. 2.0.  If a copy of the MPL was not distributed with this
+-- file, you can obtain one at https://mozilla.org/MPL/2.0/.
+--
+-- See the COPYRIGHT file distributed with this work for additional
+-- information regarding copyright ownership.
+
+syntax(2)
+test_suite('bind9')
+
+tap_test_program{name='aes_test'}
+tap_test_program{name='buffer_test'}
+tap_test_program{name='counter_test'}
+tap_test_program{name='errno_test'}
+tap_test_program{name='file_test'}
+tap_test_program{name='hash_test'}
+tap_test_program{name='heap_test'}
+tap_test_program{name='hmac_test'}
+tap_test_program{name='ht_test'}
+tap_test_program{name='lex_test'}
+tap_test_program{name='md_test'}
+tap_test_program{name='mem_test'}
+tap_test_program{name='netaddr_test'}
+tap_test_program{name='netmgr_test'}
+tap_test_program{name='parse_test'}
+tap_test_program{name='pool_test'}
+tap_test_program{name='radix_test'}
+tap_test_program{name='quota_test'}
+tap_test_program{name='regex_test'}
+tap_test_program{name='result_test'}
+tap_test_program{name='safe_test'}
+tap_test_program{name='siphash_test'}
+tap_test_program{name='sockaddr_test'}
+tap_test_program{name='socket_test'}
+tap_test_program{name='symtab_test'}
+tap_test_program{name='task_test'}
+tap_test_program{name='taskpool_test'}
+tap_test_program{name='time_test'}
+tap_test_program{name='timer_test'}
diff --git a/lib/isc/tests/Makefile.in b/lib/isc/tests/Makefile.in
new file mode 100644
index 0000000..2a2020f
--- /dev/null
+++ b/lib/isc/tests/Makefile.in
@@ -0,0 +1,227 @@
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+srcdir =	@srcdir@
+VPATH =		@srcdir@
+top_srcdir =	@top_srcdir@
+
+VERSION=@BIND9_VERSION@
+
+@BIND9_MAKE_INCLUDES@
+
+CINCLUDES =	-I. -Iinclude ${ISC_INCLUDES} \
+		${OPENSSL_CFLAGS} @CMOCKA_CFLAGS@ \
+		${JSON_C_CFLAGS} \
+		${LIBUV_CFLAGS} \
+		${LIBXML2_CFLAGS}
+CDEFINES =	-DTESTS="\"${top_builddir}/lib/isc/tests/\""
+
+ISCLIBS =	../libisc.@A@ @NO_LIBTOOL_ISCLIBS@
+ISCDEPLIBS =	../libisc.@A@
+
+LIBS =		@LIBS@ @CMOCKA_LIBS@
+
+OBJS =		isctest.@O@
+
+SRCS =		isctest.c aes_test.c buffer_test.c \
+		counter_test.c crc64_test.c errno_test.c file_test.c hash_test.c \
+		heap_test.c hmac_test.c ht_test.c lex_test.c \
+		mem_test.c md_test.c netaddr_test.c netmgr_test.c \
+		parse_test.c pool_test.c \
+		quota_test.c radix_test.c random_test.c \
+		regex_test.c result_test.c safe_test.c siphash_test.c sockaddr_test.c \
+		socket_test.c stats_test.c symtab_test.c task_test.c \
+		taskpool_test.c time_test.c timer_test.c
+
+SUBDIRS =
+TARGETS =	aes_test@EXEEXT@ buffer_test@EXEEXT@ \
+		counter_test@EXEEXT@ crc64_test@EXEEXT@ \
+		errno_test@EXEEXT@ file_test@EXEEXT@ \
+		hash_test@EXEEXT@ heap_test@EXEEXT@ hmac_test@EXEEXT@ \
+		ht_test@EXEEXT@ lex_test@EXEEXT@ \
+		mem_test@EXEEXT@ md_test@EXEEXT@ \
+		netaddr_test@EXEEXT@ netmgr_test@EXEEXT@ \
+		parse_test@EXEEXT@ pool_test@EXEEXT@ \
+		quota_test@EXEEXT@ radix_test@EXEEXT@ \
+		random_test@EXEEXT@ regex_test@EXEEXT@ result_test@EXEEXT@ \
+		safe_test@EXEEXT@ siphash_test@EXEEXT@ sockaddr_test@EXEEXT@ \
+		socket_test@EXEEXT@ stats_test@EXEEXT@ symtab_test@EXEEXT@ \
+		task_test@EXEEXT@ taskpool_test@EXEEXT@ time_test@EXEEXT@ \
+		timer_test@EXEEXT@
+
+@BIND9_MAKE_RULES@
+
+aes_test@EXEEXT@: aes_test.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ aes_test.@O@ \
+		${ISCLIBS} ${LIBS}
+
+buffer_test@EXEEXT@: buffer_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ buffer_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+counter_test@EXEEXT@: counter_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ counter_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+crc64_test@EXEEXT@: crc64_test.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ crc64_test.@O@ \
+		${ISCLIBS} ${LIBS}
+
+errno_test@EXEEXT@: errno_test.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ errno_test.@O@ \
+		${ISCLIBS} ${LIBS}
+
+file_test@EXEEXT@: file_test.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ file_test.@O@ \
+		${ISCLIBS} ${LIBS}
+
+hash_test@EXEEXT@: hash_test.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ hash_test.@O@ \
+		${ISCLIBS} ${LIBS}
+
+heap_test@EXEEXT@: heap_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ heap_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+hmac_test@EXEEXT@: hmac_test.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ hmac_test.@O@ \
+		${ISCLIBS} ${OPENSSL_LIBS} ${LIBS}
+
+ht_test@EXEEXT@: ht_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ ht_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+lex_test@EXEEXT@: lex_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ lex_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+md_test@EXEEXT@: md_test.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ md_test.@O@ \
+		${ISCLIBS} ${OPENSSL_LIBS} ${LIBS}
+
+mem_test@EXEEXT@: mem_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ mem_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+netaddr_test@EXEEXT@: netaddr_test.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ netaddr_test.@O@ \
+		${ISCLIBS} ${LIBS}
+
+parse_test@EXEEXT@: parse_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ parse_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+pool_test@EXEEXT@: pool_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ pool_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+quota_test@EXEEXT@: quota_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ quota_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+radix_test@EXEEXT@: radix_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ radix_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+random_test@EXEEXT@: random_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ random_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS} -lm
+
+regex_test@EXEEXT@: regex_test.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ regex_test.@O@ \
+		${ISCLIBS} ${LIBS}
+
+result_test@EXEEXT@: result_test.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ result_test.@O@ \
+		${ISCLIBS} ${LIBS}
+
+safe_test@EXEEXT@: safe_test.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ safe_test.@O@ \
+		${ISCLIBS} ${LIBS}
+
+siphash_test@EXEEXT@: siphash_test.@O@ ../siphash.c ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ siphash_test.@O@ \
+		${ISCLIBS} ${LIBS}
+
+socket_test@EXEEXT@: socket_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ socket_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+sockaddr_test@EXEEXT@: sockaddr_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ sockaddr_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+stats_test@EXEEXT@: stats_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ stats_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+symtab_test@EXEEXT@: symtab_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ symtab_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+task_test@EXEEXT@: task_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ task_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+taskpool_test@EXEEXT@: taskpool_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ taskpool_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+netmgr_test@EXEEXT@: netmgr_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ netmgr_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS} ${LIBUV_LIBS}
+
+time_test@EXEEXT@: time_test.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ time_test.@O@ \
+		${ISCLIBS} ${LIBS}
+
+timer_test@EXEEXT@: timer_test.@O@ isctest.@O@ ${ISCDEPLIBS}
+	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} \
+		${LDFLAGS} -o $@ timer_test.@O@ isctest.@O@ \
+		${ISCLIBS} ${LIBS}
+
+unit::
+	sh ${top_builddir}/unit/unittest.sh
+
+clean distclean::
+	rm -f ${TARGETS}
+	rm -f atf.out
diff --git a/lib/isc/tests/aes_test.c b/lib/isc/tests/aes_test.c
new file mode 100644
index 0000000..2990184
--- /dev/null
+++ b/lib/isc/tests/aes_test.c
@@ -0,0 +1,249 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/aes.h>
+#include <isc/buffer.h>
+#include <isc/hex.h>
+#include <isc/platform.h>
+#include <isc/region.h>
+#include <isc/string.h>
+#include <isc/util.h>
+
+/*
+ * Test data from NIST KAT
+ */
+
+isc_result_t
+tohexstr(unsigned char *d, char *out);
+
+size_t
+fromhexstr(const char *in, unsigned char *d);
+
+unsigned char plaintext[3 * ISC_AES_BLOCK_LENGTH];
+unsigned char ciphertext[ISC_AES_BLOCK_LENGTH];
+char str[2 * ISC_AES_BLOCK_LENGTH + 1];
+unsigned char key[ISC_AES256_KEYLENGTH + 1];
+size_t len;
+
+isc_result_t
+tohexstr(unsigned char *d, char *out) {
+	isc_buffer_t b;
+	isc_region_t r;
+
+	isc_buffer_init(&b, out, 2 * ISC_AES_BLOCK_LENGTH + 1);
+	r.base = d;
+	r.length = ISC_AES_BLOCK_LENGTH;
+	return (isc_hex_totext(&r, 0, "", &b));
+}
+
+size_t
+fromhexstr(const char *in, unsigned char *d) {
+	isc_buffer_t b;
+	isc_result_t ret;
+
+	isc_buffer_init(&b, d, ISC_AES256_KEYLENGTH + 1);
+	ret = isc_hex_decodestring(in, &b);
+	if (ret != ISC_R_SUCCESS) {
+		return (0);
+	}
+	return (isc_buffer_usedlength(&b));
+}
+
+typedef struct aes_testcase {
+	const char *key;
+	const char *input;
+	const char *result;
+} aes_testcase_t;
+
+/* AES 128 test vectors */
+static void
+isc_aes128_test(void **state) {
+	aes_testcase_t testcases[] = { /* Test 1 (KAT ECBVarTxt128 #3) */
+				       { "00000000000000000000000000000000",
+					 "F0000000000000000000000000000000",
+					 "96D9FD5CC4F07441727DF0F33E401A36" },
+				       /* Test 2 (KAT ECBVarTxt128 #123) */
+				       { "00000000000000000000000000000000",
+					 "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0",
+					 "F9B0FDA0C4A898F5B9E6F661C4CE4D07" },
+				       /* Test 3 (KAT ECBVarKey128 #3) */
+				       { "F0000000000000000000000000000000",
+					 "00000000000000000000000000000000",
+					 "970014D634E2B7650777E8E84D03CCD8" },
+				       /* Test 4 (KAT ECBVarKey128 #123) */
+				       { "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0",
+					 "00000000000000000000000000000000",
+					 "41C78C135ED9E98C096640647265DA1E" },
+				       /* Test 5 (KAT ECBGFSbox128 #3) */
+				       { "00000000000000000000000000000000",
+					 "6A118A874519E64E9963798A503F1D35",
+					 "DC43BE40BE0E53712F7E2BF5CA707209" },
+				       /* Test 6 (KAT ECBKeySbox128 #3) */
+				       { "B6364AC4E1DE1E285EAF144A2415F7A0",
+					 "00000000000000000000000000000000",
+					 "5D9B05578FC944B3CF1CCF0E746CD581" },
+				       { NULL, NULL, NULL }
+	};
+
+	aes_testcase_t *testcase = testcases;
+
+	UNUSED(state);
+
+	while (testcase->key != NULL) {
+		len = fromhexstr(testcase->key, key);
+		assert_int_equal(len, ISC_AES128_KEYLENGTH);
+		len = fromhexstr(testcase->input, plaintext);
+		assert_int_equal(len, ISC_AES_BLOCK_LENGTH);
+		isc_aes128_crypt(key, plaintext, ciphertext);
+		assert_int_equal(tohexstr(ciphertext, str), ISC_R_SUCCESS);
+		assert_string_equal(str, testcase->result);
+
+		testcase++;
+	}
+}
+
+/* AES 192 test vectors */
+static void
+isc_aes192_test(void **state) {
+	aes_testcase_t testcases[] = {
+		/* Test 1 (KAT ECBVarTxt192 #3) */
+		{ "000000000000000000000000000000000000000000000000",
+		  "F0000000000000000000000000000000",
+		  "2A560364CE529EFC21788779568D5555" },
+		/* Test 2 (KAT ECBVarTxt192 #123) */
+		{ "000000000000000000000000000000000000000000000000",
+		  "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0",
+		  "2AABB999F43693175AF65C6C612C46FB" },
+		/* Test 3 (KAT ECBVarKey192 #3) */
+		{ "F00000000000000000000000000000000000000000000000",
+		  "00000000000000000000000000000000",
+		  "180B09F267C45145DB2F826C2582D35C" },
+		/* Test 4 (KAT ECBVarKey192 #187) */
+		{ "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0",
+		  "00000000000000000000000000000000",
+		  "EACF1E6C4224EFB38900B185AB1DFD42" },
+		/* Test 5 (KAT ECBGFSbox192 #3) */
+		{ "000000000000000000000000000000000000000000000000",
+		  "51719783D3185A535BD75ADC65071CE1",
+		  "4F354592FF7C8847D2D0870CA9481B7C" },
+		/* Test 6 (KAT ECBKeySbox192 #3) */
+		{ "CD62376D5EBB414917F0C78F05266433DC9192A1EC943300",
+		  "00000000000000000000000000000000",
+		  "7F6C25FF41858561BB62F36492E93C29" },
+		{ NULL, NULL, NULL }
+	};
+
+	aes_testcase_t *testcase = testcases;
+
+	UNUSED(state);
+
+	while (testcase->key != NULL) {
+		len = fromhexstr(testcase->key, key);
+		assert_int_equal(len, ISC_AES192_KEYLENGTH);
+		len = fromhexstr(testcase->input, plaintext);
+		assert_int_equal(len, ISC_AES_BLOCK_LENGTH);
+		isc_aes192_crypt(key, plaintext, ciphertext);
+		assert_int_equal(tohexstr(ciphertext, str), ISC_R_SUCCESS);
+		assert_string_equal(str, testcase->result);
+
+		testcase++;
+	}
+}
+
+/* AES 256 test vectors */
+static void
+isc_aes256_test(void **state) {
+	aes_testcase_t testcases[] = { /* Test 1 (KAT ECBVarTxt256 #3) */
+				       { "00000000000000000000000000000000"
+					 "00000000000000000000000000000000",
+					 "F0000000000000000000000000000000",
+					 "7F2C5ECE07A98D8BEE13C51177395FF7" },
+				       /* Test 2 (KAT ECBVarTxt256 #123) */
+				       { "00000000000000000000000000000000"
+					 "00000000000000000000000000000000",
+					 "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0",
+					 "7240E524BC51D8C4D440B1BE55D1062C" },
+				       /* Test 3 (KAT ECBVarKey256 #3) */
+				       { "F0000000000000000000000000000000"
+					 "00000000000000000000000000000000",
+					 "00000000000000000000000000000000",
+					 "1C777679D50037C79491A94DA76A9A35" },
+				       /* Test 4 (KAT ECBVarKey256 #251) */
+				       { "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
+					 "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0",
+					 "00000000000000000000000000000000",
+					 "03720371A04962EAEA0A852E69972858" },
+				       /* Test 5 (KAT ECBGFSbox256 #3) */
+				       { "00000000000000000000000000000000"
+					 "00000000000000000000000000000000",
+					 "8A560769D605868AD80D819BDBA03771",
+					 "38F2C7AE10612415D27CA190D27DA8B4" },
+				       /* Test 6 (KAT ECBKeySbox256 #3) */
+				       { "984CA75F4EE8D706F46C2D98C0BF4A45"
+					 "F5B00D791C2DFEB191B5ED8E420FD627",
+					 "00000000000000000000000000000000",
+					 "4307456A9E67813B452E15FA8FFFE398" },
+				       { NULL, NULL, NULL }
+	};
+
+	aes_testcase_t *testcase = testcases;
+
+	UNUSED(state);
+
+	while (testcase->key != NULL) {
+		len = fromhexstr(testcase->key, key);
+		assert_int_equal(len, ISC_AES256_KEYLENGTH);
+		len = fromhexstr(testcase->input, plaintext);
+		assert_int_equal(len, ISC_AES_BLOCK_LENGTH);
+		isc_aes256_crypt(key, plaintext, ciphertext);
+		assert_int_equal(tohexstr(ciphertext, str), ISC_R_SUCCESS);
+		assert_string_equal(str, testcase->result);
+
+		testcase++;
+	}
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(isc_aes128_test),
+		cmocka_unit_test(isc_aes192_test),
+		cmocka_unit_test(isc_aes256_test),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/buffer_test.c b/lib/isc/tests/buffer_test.c
new file mode 100644
index 0000000..91eb890
--- /dev/null
+++ b/lib/isc/tests/buffer_test.c
@@ -0,0 +1,351 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <fcntl.h>
+#include <limits.h>
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/buffer.h>
+#include <isc/print.h>
+#include <isc/region.h>
+#include <isc/result.h>
+#include <isc/types.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+/* reserve space in dynamic buffers */
+static void
+isc_buffer_reserve_test(void **state) {
+	isc_result_t result;
+	isc_buffer_t *b;
+
+	UNUSED(state);
+
+	b = NULL;
+	isc_buffer_allocate(test_mctx, &b, 1024);
+	assert_int_equal(b->length, 1024);
+
+	/*
+	 * 1024 bytes should already be available, so this call does
+	 * nothing.
+	 */
+	result = isc_buffer_reserve(&b, 1024);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(ISC_BUFFER_VALID(b));
+	assert_non_null(b);
+	assert_int_equal(b->length, 1024);
+
+	/*
+	 * This call should grow it to 2048 bytes as only 1024 bytes are
+	 * available in the buffer.
+	 */
+	result = isc_buffer_reserve(&b, 1025);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(ISC_BUFFER_VALID(b));
+	assert_non_null(b);
+	assert_int_equal(b->length, 2048);
+
+	/*
+	 * 2048 bytes should already be available, so this call does
+	 * nothing.
+	 */
+	result = isc_buffer_reserve(&b, 2000);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(ISC_BUFFER_VALID(b));
+	assert_non_null(b);
+	assert_int_equal(b->length, 2048);
+
+	/*
+	 * This call should grow it to 4096 bytes as only 2048 bytes are
+	 * available in the buffer.
+	 */
+	result = isc_buffer_reserve(&b, 3000);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(ISC_BUFFER_VALID(b));
+	assert_non_null(b);
+	assert_int_equal(b->length, 4096);
+
+	/* Consume some of the buffer so we can run the next test. */
+	isc_buffer_add(b, 4096);
+
+	/*
+	 * This call should fail and leave buffer untouched.
+	 */
+	result = isc_buffer_reserve(&b, UINT_MAX);
+	assert_int_equal(result, ISC_R_NOMEMORY);
+	assert_true(ISC_BUFFER_VALID(b));
+	assert_non_null(b);
+	assert_int_equal(b->length, 4096);
+
+	isc_buffer_free(&b);
+}
+
+/* dynamic buffer automatic reallocation */
+static void
+isc_buffer_dynamic_test(void **state) {
+	isc_buffer_t *b;
+	size_t last_length = 10;
+	int i;
+
+	UNUSED(state);
+
+	b = NULL;
+	isc_buffer_allocate(test_mctx, &b, last_length);
+	assert_non_null(b);
+	assert_int_equal(b->length, last_length);
+
+	isc_buffer_setautorealloc(b, true);
+
+	isc_buffer_putuint8(b, 1);
+
+	for (i = 0; i < 1000; i++) {
+		isc_buffer_putstr(b, "thisisa24charslongstring");
+	}
+	assert_true(b->length - last_length >= 1000 * 24);
+	last_length += 1000 * 24;
+
+	for (i = 0; i < 10000; i++) {
+		isc_buffer_putuint8(b, 1);
+	}
+
+	assert_true(b->length - last_length >= 10000 * 1);
+	last_length += 10000 * 1;
+
+	for (i = 0; i < 10000; i++) {
+		isc_buffer_putuint16(b, 1);
+	}
+
+	assert_true(b->length - last_length >= 10000 * 2);
+
+	last_length += 10000 * 2;
+	for (i = 0; i < 10000; i++) {
+		isc_buffer_putuint24(b, 1);
+	}
+	assert_true(b->length - last_length >= 10000 * 3);
+
+	last_length += 10000 * 3;
+
+	for (i = 0; i < 10000; i++) {
+		isc_buffer_putuint32(b, 1);
+	}
+	assert_true(b->length - last_length >= 10000 * 4);
+
+	isc_buffer_free(&b);
+}
+
+/* copy a region into a buffer */
+static void
+isc_buffer_copyregion_test(void **state) {
+	unsigned char data[] = { 0x11, 0x22, 0x33, 0x44 };
+	isc_buffer_t *b = NULL;
+	isc_result_t result;
+
+	isc_region_t r = {
+		.base = data,
+		.length = sizeof(data),
+	};
+
+	UNUSED(state);
+
+	isc_buffer_allocate(test_mctx, &b, sizeof(data));
+
+	/*
+	 * Fill originally allocated buffer space.
+	 */
+	result = isc_buffer_copyregion(b, &r);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/*
+	 * Appending more data to the buffer should fail.
+	 */
+	result = isc_buffer_copyregion(b, &r);
+	assert_int_equal(result, ISC_R_NOSPACE);
+
+	/*
+	 * Enable auto reallocation and retry.  Appending should now succeed.
+	 */
+	isc_buffer_setautorealloc(b, true);
+	result = isc_buffer_copyregion(b, &r);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_buffer_free(&b);
+}
+
+/* sprintf() into a buffer */
+static void
+isc_buffer_printf_test(void **state) {
+	unsigned int used, prev_used;
+	const char *empty_fmt;
+	isc_result_t result;
+	isc_buffer_t *b, sb;
+	char buf[8];
+
+	UNUSED(state);
+
+	/*
+	 * Prepare a buffer with auto-reallocation enabled.
+	 */
+	b = NULL;
+	isc_buffer_allocate(test_mctx, &b, 0);
+	isc_buffer_setautorealloc(b, true);
+
+	/*
+	 * Sanity check.
+	 */
+	result = isc_buffer_printf(b, "foo");
+	assert_int_equal(result, ISC_R_SUCCESS);
+	used = isc_buffer_usedlength(b);
+	assert_int_equal(used, 3);
+
+	result = isc_buffer_printf(b, "bar");
+	assert_int_equal(result, ISC_R_SUCCESS);
+	used = isc_buffer_usedlength(b);
+	assert_int_equal(used, 3 + 3);
+
+	/*
+	 * Also check the terminating NULL byte is there, even though it is not
+	 * part of the buffer's used region.
+	 */
+	assert_memory_equal(isc_buffer_current(b), "foobar", 7);
+
+	/*
+	 * Skip over data from previous check to prevent failures in previous
+	 * check from affecting this one.
+	 */
+	prev_used = used;
+	isc_buffer_forward(b, prev_used);
+
+	/*
+	 * Some standard usage checks.
+	 */
+	isc_buffer_printf(b, "%d", 42);
+	used = isc_buffer_usedlength(b);
+	assert_int_equal(used - prev_used, 2);
+
+	isc_buffer_printf(b, "baz%1X", 42);
+	used = isc_buffer_usedlength(b);
+	assert_int_equal(used - prev_used, 2 + 5);
+
+	isc_buffer_printf(b, "%6.1f", 42.42f);
+	used = isc_buffer_usedlength(b);
+	assert_int_equal(used - prev_used, 2 + 5 + 6);
+
+	/*
+	 * Also check the terminating NULL byte is there, even though it is not
+	 * part of the buffer's used region.
+	 */
+	assert_memory_equal(isc_buffer_current(b), "42baz2A  42.4", 14);
+
+	/*
+	 * Check an empty format string is properly handled.
+	 *
+	 * Note: we don't use a string literal for the format string to
+	 * avoid triggering [-Werror=format-zero-length].
+	 * Note: we have a dummy third argument as some compilers complain
+	 * without it.
+	 */
+	prev_used = used;
+	empty_fmt = "";
+	result = isc_buffer_printf(b, empty_fmt, "");
+	assert_int_equal(result, ISC_R_SUCCESS);
+	used = isc_buffer_usedlength(b);
+	assert_int_equal(prev_used, used);
+
+	isc_buffer_free(&b);
+
+	/*
+	 * Check overflow on a static buffer.
+	 */
+	isc_buffer_init(&sb, buf, sizeof(buf));
+	result = isc_buffer_printf(&sb, "123456");
+	assert_int_equal(result, ISC_R_SUCCESS);
+	used = isc_buffer_usedlength(&sb);
+	assert_int_equal(used, 6);
+
+	result = isc_buffer_printf(&sb, "789");
+	assert_int_equal(result, ISC_R_NOSPACE);
+	used = isc_buffer_usedlength(&sb);
+	assert_int_equal(used, 6);
+
+	result = isc_buffer_printf(&sb, "78");
+	assert_int_equal(result, ISC_R_NOSPACE);
+	used = isc_buffer_usedlength(&sb);
+	assert_int_equal(used, 6);
+
+	result = isc_buffer_printf(&sb, "7");
+	assert_int_equal(result, ISC_R_SUCCESS);
+	used = isc_buffer_usedlength(&sb);
+	assert_int_equal(used, 7);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test_setup_teardown(isc_buffer_reserve_test, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(isc_buffer_dynamic_test, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(isc_buffer_copyregion_test,
+						_setup, _teardown),
+		cmocka_unit_test_setup_teardown(isc_buffer_printf_test, _setup,
+						_teardown),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/counter_test.c b/lib/isc/tests/counter_test.c
new file mode 100644
index 0000000..6a454f8
--- /dev/null
+++ b/lib/isc/tests/counter_test.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/counter.h>
+#include <isc/result.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+/* test isc_counter object */
+static void
+isc_counter_test(void **state) {
+	isc_result_t result;
+	isc_counter_t *counter = NULL;
+	int i;
+
+	UNUSED(state);
+
+	result = isc_counter_create(test_mctx, 0, &counter);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	for (i = 0; i < 10; i++) {
+		result = isc_counter_increment(counter);
+		assert_int_equal(result, ISC_R_SUCCESS);
+	}
+
+	assert_int_equal(isc_counter_used(counter), 10);
+
+	isc_counter_setlimit(counter, 15);
+	for (i = 0; i < 10; i++) {
+		result = isc_counter_increment(counter);
+		if (result != ISC_R_SUCCESS) {
+			break;
+		}
+	}
+
+	assert_int_equal(isc_counter_used(counter), 15);
+
+	isc_counter_detach(&counter);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test_setup_teardown(isc_counter_test, _setup,
+						_teardown),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/crc64_test.c b/lib/isc/tests/crc64_test.c
new file mode 100644
index 0000000..1c4f4f4
--- /dev/null
+++ b/lib/isc/tests/crc64_test.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/* ! \file */
+
+#if HAVE_CMOCKA
+
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/crc64.h>
+#include <isc/print.h>
+#include <isc/result.h>
+#include <isc/util.h>
+
+#define TEST_INPUT(x) (x), sizeof(x) - 1
+
+typedef struct hash_testcase {
+	const char *input;
+	size_t input_len;
+	const char *result;
+	int repeats;
+} hash_testcase_t;
+
+static void
+isc_crc64_init_test(void **state) {
+	uint64_t crc;
+
+	UNUSED(state);
+
+	isc_crc64_init(&crc);
+	assert_int_equal(crc, 0xffffffffffffffffUL);
+}
+
+static void
+_crc64(const char *buf, size_t buflen, const char *result, const int repeats) {
+	uint64_t crc;
+
+	isc_crc64_init(&crc);
+	assert_int_equal(crc, 0xffffffffffffffffUL);
+
+	for (int i = 0; i < repeats; i++) {
+		isc_crc64_update(&crc, buf, buflen);
+	}
+
+	isc_crc64_final(&crc);
+
+	char hex[16 + 1];
+	snprintf(hex, sizeof(hex), "%016" PRIX64, crc);
+
+	assert_memory_equal(hex, result, (result ? strlen(result) : 0));
+}
+
+/* 64-bit cyclic redundancy check */
+static void
+isc_crc64_test(void **state) {
+	UNUSED(state);
+
+	_crc64(TEST_INPUT(""), "0000000000000000", 1);
+	_crc64(TEST_INPUT("a"), "CE73F427ACC0A99A", 1);
+	_crc64(TEST_INPUT("abc"), "048B813AF9F49702", 1);
+	_crc64(TEST_INPUT("message digest"), "5273F9EA7A357BF4", 1);
+	_crc64(TEST_INPUT("abcdefghijklmnopqrstuvwxyz"), "59F079F9218BAAA1", 1);
+	_crc64(TEST_INPUT("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklm"
+			  "nopqrstuvwxyz0123456789"),
+	       "A36DA8F71E78B6FB", 1);
+	_crc64(TEST_INPUT("123456789012345678901234567890123456789"
+			  "01234567890123456789012345678901234567890"),
+	       "81E5EB73C8E7874A", 1);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(isc_crc64_init_test),
+		cmocka_unit_test(isc_crc64_test),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/errno_test.c b/lib/isc/tests/errno_test.c
new file mode 100644
index 0000000..56da651
--- /dev/null
+++ b/lib/isc/tests/errno_test.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <errno.h>
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/errno.h>
+#include <isc/result.h>
+#include <isc/util.h>
+
+typedef struct {
+	int err;
+	isc_result_t result;
+} testpair_t;
+
+testpair_t testpair[] = { { EPERM, ISC_R_NOPERM },
+			  { ENOENT, ISC_R_FILENOTFOUND },
+			  { EIO, ISC_R_IOERROR },
+			  { EBADF, ISC_R_INVALIDFILE },
+			  { ENOMEM, ISC_R_NOMEMORY },
+			  { EACCES, ISC_R_NOPERM },
+			  { EEXIST, ISC_R_FILEEXISTS },
+			  { ENOTDIR, ISC_R_INVALIDFILE },
+			  { EINVAL, ISC_R_INVALIDFILE },
+			  { ENFILE, ISC_R_TOOMANYOPENFILES },
+			  { EMFILE, ISC_R_TOOMANYOPENFILES },
+			  { EPIPE, ISC_R_CONNECTIONRESET },
+			  { ENAMETOOLONG, ISC_R_INVALIDFILE },
+			  { ELOOP, ISC_R_INVALIDFILE },
+#ifdef EOVERFLOW
+			  { EOVERFLOW, ISC_R_RANGE },
+#endif /* ifdef EOVERFLOW */
+#ifdef EAFNOSUPPORT
+			  { EAFNOSUPPORT, ISC_R_FAMILYNOSUPPORT },
+#endif /* ifdef EAFNOSUPPORT */
+#ifdef EADDRINUSE
+			  { EADDRINUSE, ISC_R_ADDRINUSE },
+#endif /* ifdef EADDRINUSE */
+			  { EADDRNOTAVAIL, ISC_R_ADDRNOTAVAIL },
+#ifdef ENETDOWN
+			  { ENETDOWN, ISC_R_NETDOWN },
+#endif /* ifdef ENETDOWN */
+#ifdef ENETUNREACH
+			  { ENETUNREACH, ISC_R_NETUNREACH },
+#endif /* ifdef ENETUNREACH */
+#ifdef ECONNABORTED
+			  { ECONNABORTED, ISC_R_CONNECTIONRESET },
+#endif /* ifdef ECONNABORTED */
+#ifdef ECONNRESET
+			  { ECONNRESET, ISC_R_CONNECTIONRESET },
+#endif /* ifdef ECONNRESET */
+#ifdef ENOBUFS
+			  { ENOBUFS, ISC_R_NORESOURCES },
+#endif /* ifdef ENOBUFS */
+#ifdef ENOTCONN
+			  { ENOTCONN, ISC_R_NOTCONNECTED },
+#endif /* ifdef ENOTCONN */
+#ifdef ETIMEDOUT
+			  { ETIMEDOUT, ISC_R_TIMEDOUT },
+#endif /* ifdef ETIMEDOUT */
+			  { ECONNREFUSED, ISC_R_CONNREFUSED },
+#ifdef EHOSTDOWN
+			  { EHOSTDOWN, ISC_R_HOSTDOWN },
+#endif /* ifdef EHOSTDOWN */
+#ifdef EHOSTUNREACH
+			  { EHOSTUNREACH, ISC_R_HOSTUNREACH },
+#endif /* ifdef EHOSTUNREACH */
+			  { 0, ISC_R_UNEXPECTED } };
+
+/* convert errno to ISC result */
+static void
+isc_errno_toresult_test(void **state) {
+	isc_result_t result, expect;
+	size_t i;
+
+	UNUSED(state);
+
+	for (i = 0; i < sizeof(testpair) / sizeof(testpair[0]); i++) {
+		result = isc_errno_toresult(testpair[i].err);
+		expect = testpair[i].result;
+		assert_int_equal(result, expect);
+	}
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(isc_errno_toresult_test),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/file_test.c b/lib/isc/tests/file_test.c
new file mode 100644
index 0000000..6d81ff9
--- /dev/null
+++ b/lib/isc/tests/file_test.c
@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <fcntl.h>
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/file.h>
+#include <isc/result.h>
+#include <isc/util.h>
+
+#define NAME	  "internal"
+#define SHA	  "3bed2cb3a3acf7b6a8ef408420cc682d5520e26976d354254f528c965612054f"
+#define TRUNC_SHA "3bed2cb3a3acf7b6"
+
+#define BAD1	 "in/internal"
+#define BADHASH1 "8bbb97a888791399"
+
+#define BAD2	 "Internal"
+#define BADHASH2 "2ea1842b445b0c81"
+
+#define F(x) "testdata/file/" x ".test"
+
+static void
+touch(const char *filename) {
+	int fd;
+
+	unlink(filename);
+	fd = creat(filename, 0644);
+	if (fd != -1) {
+		close(fd);
+	}
+}
+
+/* test sanitized filenames */
+static void
+isc_file_sanitize_test(void **state) {
+	isc_result_t result;
+	char buf[1024];
+
+	UNUSED(state);
+
+	assert_return_code(chdir(TESTS), 0);
+
+	result = isc_file_sanitize("testdata/file", NAME, "test", buf, 1024);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(strcmp(buf, F(NAME)), 0);
+
+	touch(F(TRUNC_SHA));
+	result = isc_file_sanitize("testdata/file", NAME, "test", buf, 1024);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(strcmp(buf, F(TRUNC_SHA)), 0);
+
+	touch(F(SHA));
+	result = isc_file_sanitize("testdata/file", NAME, "test", buf, 1024);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(strcmp(buf, F(SHA)), 0);
+
+	result = isc_file_sanitize("testdata/file", BAD1, "test", buf, 1024);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(strcmp(buf, F(BADHASH1)), 0);
+
+	result = isc_file_sanitize("testdata/file", BAD2, "test", buf, 1024);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(strcmp(buf, F(BADHASH2)), 0);
+
+	unlink(F(TRUNC_SHA));
+	unlink(F(SHA));
+}
+
+/* test filename templates */
+static void
+isc_file_template_test(void **state) {
+	isc_result_t result;
+	char buf[1024];
+
+	UNUSED(state);
+
+	assert_return_code(chdir(TESTS), 0);
+
+	result = isc_file_template("/absolute/path", "file-XXXXXXXX", buf,
+				   sizeof(buf));
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_string_equal(buf, "/absolute/file-XXXXXXXX");
+
+	result = isc_file_template("relative/path", "file-XXXXXXXX", buf,
+				   sizeof(buf));
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_string_equal(buf, "relative/file-XXXXXXXX");
+
+	result = isc_file_template("/trailing/slash/", "file-XXXXXXXX", buf,
+				   sizeof(buf));
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_string_equal(buf, "/trailing/slash/file-XXXXXXXX");
+
+	result = isc_file_template("relative/trailing/slash/", "file-XXXXXXXX",
+				   buf, sizeof(buf));
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_string_equal(buf, "relative/trailing/slash/file-XXXXXXXX");
+
+	result = isc_file_template("/", "file-XXXXXXXX", buf, sizeof(buf));
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_string_equal(buf, "/file-XXXXXXXX");
+
+	result = isc_file_template("noslash", "file-XXXXXXXX", buf,
+				   sizeof(buf));
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_string_equal(buf, "file-XXXXXXXX");
+
+	result = isc_file_template(NULL, "file-XXXXXXXX", buf, sizeof(buf));
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_string_equal(buf, "file-XXXXXXXX");
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(isc_file_sanitize_test),
+		cmocka_unit_test(isc_file_template_test),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/hash_test.c b/lib/isc/tests/hash_test.c
new file mode 100644
index 0000000..ad0eb9d
--- /dev/null
+++ b/lib/isc/tests/hash_test.c
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <inttypes.h>
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/buffer.h>
+#include <isc/hash.h>
+#include <isc/hex.h>
+#include <isc/print.h>
+#include <isc/region.h>
+#include <isc/string.h>
+#include <isc/util.h>
+
+#include <pk11/site.h>
+
+#define TEST_INPUT(x) (x), sizeof(x) - 1
+
+/*Hash function test */
+static void
+isc_hash_function_test(void **state) {
+	unsigned int h1;
+	unsigned int h2;
+
+	UNUSED(state);
+
+	/* Immutability of hash function */
+	h1 = isc_hash_function(NULL, 0, true);
+	h2 = isc_hash_function(NULL, 0, true);
+
+	assert_int_equal(h1, h2);
+
+	/* Hash function characteristics */
+	h1 = isc_hash_function("Hello world", 12, true);
+	h2 = isc_hash_function("Hello world", 12, true);
+
+	assert_int_equal(h1, h2);
+
+	/* Case */
+	h1 = isc_hash_function("Hello world", 12, false);
+	h2 = isc_hash_function("heLLo WorLd", 12, false);
+
+	assert_int_equal(h1, h2);
+
+	/* Unequal */
+	h1 = isc_hash_function("Hello world", 12, true);
+	h2 = isc_hash_function("heLLo WorLd", 12, true);
+
+	assert_int_not_equal(h1, h2);
+}
+
+/* Hash function initializer test */
+static void
+isc_hash_initializer_test(void **state) {
+	unsigned int h1;
+	unsigned int h2;
+
+	UNUSED(state);
+
+	h1 = isc_hash_function("Hello world", 12, true);
+	h2 = isc_hash_function("Hello world", 12, true);
+
+	assert_int_equal(h1, h2);
+
+	isc_hash_set_initializer(isc_hash_get_initializer());
+
+	/* Hash value must not change */
+	h2 = isc_hash_function("Hello world", 12, true);
+
+	assert_int_equal(h1, h2);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(isc_hash_function_test),
+		cmocka_unit_test(isc_hash_initializer_test),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/heap_test.c b/lib/isc/tests/heap_test.c
new file mode 100644
index 0000000..5c41b20
--- /dev/null
+++ b/lib/isc/tests/heap_test.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/* ! \file */
+
+#if HAVE_CMOCKA
+
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/heap.h>
+#include <isc/mem.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+struct e {
+	unsigned int value;
+	unsigned int index;
+};
+
+static bool
+compare(void *p1, void *p2) {
+	struct e *e1 = p1;
+	struct e *e2 = p2;
+
+	return (e1->value < e2->value);
+}
+
+static void
+idx(void *p, unsigned int i) {
+	struct e *e = p;
+
+	e->index = i;
+}
+
+/* test isc_heap_delete() */
+static void
+isc_heap_delete_test(void **state) {
+	isc_heap_t *heap = NULL;
+	struct e e1 = { 100, 0 };
+
+	UNUSED(state);
+
+	isc_heap_create(test_mctx, compare, idx, 0, &heap);
+	assert_non_null(heap);
+
+	isc_heap_insert(heap, &e1);
+	assert_int_equal(e1.index, 1);
+
+	isc_heap_delete(heap, e1.index);
+	assert_int_equal(e1.index, 0);
+
+	isc_heap_destroy(&heap);
+	assert_null(heap);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(isc_heap_delete_test),
+	};
+
+	return (cmocka_run_group_tests(tests, _setup, _teardown));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/hmac_test.c b/lib/isc/tests/hmac_test.c
new file mode 100644
index 0000000..74c8106
--- /dev/null
+++ b/lib/isc/tests/hmac_test.c
@@ -0,0 +1,949 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/* ! \file */
+
+#if HAVE_CMOCKA
+
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/buffer.h>
+#include <isc/hex.h>
+#include <isc/hmac.h>
+#include <isc/region.h>
+#include <isc/result.h>
+
+#include "../hmac.c"
+
+#define TEST_INPUT(x) (x), sizeof(x) - 1
+
+static int
+_setup(void **state) {
+	isc_hmac_t *hmac = isc_hmac_new();
+	if (hmac == NULL) {
+		return (-1);
+	}
+	*state = hmac;
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	if (*state == NULL) {
+		return (-1);
+	}
+	isc_hmac_free(*state);
+	return (0);
+}
+
+static int
+_reset(void **state) {
+	if (*state == NULL) {
+		return (-1);
+	}
+	if (isc_hmac_reset(*state) != ISC_R_SUCCESS) {
+		return (-1);
+	}
+	return (0);
+}
+
+static void
+isc_hmac_new_test(void **state) {
+	UNUSED(state);
+
+	isc_hmac_t *hmac = isc_hmac_new();
+	assert_non_null(hmac);
+	isc_hmac_free(hmac); /* Cleanup */
+}
+
+static void
+isc_hmac_free_test(void **state) {
+	UNUSED(state);
+
+	isc_hmac_t *hmac = isc_hmac_new();
+	assert_non_null(hmac);
+	isc_hmac_free(hmac); /* Test freeing valid message digest context */
+	isc_hmac_free(NULL); /* Test freeing NULL argument */
+}
+
+static void
+isc_hmac_test(isc_hmac_t *hmac, const void *key, size_t keylen,
+	      const isc_md_type_t *type, const char *buf, size_t buflen,
+	      const char *result, const int repeats) {
+	assert_non_null(hmac);
+	assert_int_equal(isc_hmac_init(hmac, key, keylen, type), ISC_R_SUCCESS);
+
+	int i;
+
+	for (i = 0; i < repeats; i++) {
+		assert_int_equal(isc_hmac_update(hmac,
+						 (const unsigned char *)buf,
+						 buflen),
+				 ISC_R_SUCCESS);
+	}
+
+	unsigned char digest[ISC_MAX_MD_SIZE];
+	unsigned int digestlen;
+	assert_int_equal(isc_hmac_final(hmac, digest, &digestlen),
+			 ISC_R_SUCCESS);
+
+	char hexdigest[ISC_MAX_MD_SIZE * 2 + 3];
+	isc_region_t r = { .base = digest, .length = digestlen };
+	isc_buffer_t b;
+	isc_buffer_init(&b, hexdigest, sizeof(hexdigest));
+
+	assert_return_code(isc_hex_totext(&r, 0, "", &b), ISC_R_SUCCESS);
+
+	assert_memory_equal(hexdigest, result, (result ? strlen(result) : 0));
+	assert_int_equal(isc_hmac_reset(hmac), ISC_R_SUCCESS);
+}
+
+static void
+isc_hmac_init_test(void **state) {
+	isc_hmac_t *hmac = *state;
+	assert_non_null(hmac);
+
+	expect_assert_failure(isc_hmac_init(NULL, "", 0, ISC_MD_MD5));
+
+	assert_int_equal(isc_hmac_init(hmac, "", 0, NULL),
+			 ISC_R_NOTIMPLEMENTED);
+
+	expect_assert_failure(isc_hmac_init(hmac, NULL, 0, ISC_MD_MD5));
+
+	assert_int_equal(isc_hmac_init(hmac, "", 0, ISC_MD_MD5), ISC_R_SUCCESS);
+	assert_int_equal(isc_hmac_reset(hmac), ISC_R_SUCCESS);
+
+	assert_int_equal(isc_hmac_init(hmac, "", 0, ISC_MD_SHA1),
+			 ISC_R_SUCCESS);
+	assert_int_equal(isc_hmac_reset(hmac), ISC_R_SUCCESS);
+
+	assert_int_equal(isc_hmac_init(hmac, "", 0, ISC_MD_SHA224),
+			 ISC_R_SUCCESS);
+	assert_int_equal(isc_hmac_reset(hmac), ISC_R_SUCCESS);
+
+	assert_int_equal(isc_hmac_init(hmac, "", 0, ISC_MD_SHA256),
+			 ISC_R_SUCCESS);
+	assert_int_equal(isc_hmac_reset(hmac), ISC_R_SUCCESS);
+
+	assert_int_equal(isc_hmac_init(hmac, "", 0, ISC_MD_SHA384),
+			 ISC_R_SUCCESS);
+	assert_int_equal(isc_hmac_reset(hmac), ISC_R_SUCCESS);
+
+	assert_int_equal(isc_hmac_init(hmac, "", 0, ISC_MD_SHA512),
+			 ISC_R_SUCCESS);
+	assert_int_equal(isc_hmac_reset(hmac), ISC_R_SUCCESS);
+}
+
+static void
+isc_hmac_update_test(void **state) {
+	isc_hmac_t *hmac = *state;
+	assert_non_null(hmac);
+
+	/* Uses message digest context initialized in isc_hmac_init_test() */
+	expect_assert_failure(isc_hmac_update(NULL, NULL, 0));
+
+	assert_int_equal(isc_hmac_update(hmac, NULL, 100), ISC_R_SUCCESS);
+	assert_int_equal(isc_hmac_update(hmac, (const unsigned char *)"", 0),
+			 ISC_R_SUCCESS);
+}
+
+static void
+isc_hmac_reset_test(void **state) {
+	isc_hmac_t *hmac = *state;
+#if 0
+	unsigned char digest[ISC_MAX_MD_SIZE] __attribute((unused));
+	unsigned int digestlen __attribute((unused));
+#endif /* if 0 */
+
+	assert_non_null(hmac);
+
+	assert_int_equal(isc_hmac_init(hmac, "", 0, ISC_MD_SHA512),
+			 ISC_R_SUCCESS);
+	assert_int_equal(isc_hmac_update(hmac, (const unsigned char *)"a", 1),
+			 ISC_R_SUCCESS);
+	assert_int_equal(isc_hmac_update(hmac, (const unsigned char *)"b", 1),
+			 ISC_R_SUCCESS);
+
+	assert_int_equal(isc_hmac_reset(hmac), ISC_R_SUCCESS);
+
+#if 0
+	/*
+	 * This test would require OpenSSL compiled with mock_assert(),
+	 * so this could be only manually checked that the test will
+	 * segfault when called by hand
+	 */
+	expect_assert_failure(isc_hmac_final(hmac,digest,&digestlen));
+#endif /* if 0 */
+}
+
+static void
+isc_hmac_final_test(void **state) {
+	isc_hmac_t *hmac = *state;
+	assert_non_null(hmac);
+
+	unsigned char digest[ISC_MAX_MD_SIZE];
+	unsigned int digestlen;
+
+	/* Fail when message digest context is empty */
+	expect_assert_failure(isc_hmac_final(NULL, digest, &digestlen));
+	/* Fail when output buffer is empty */
+	expect_assert_failure(isc_hmac_final(hmac, NULL, &digestlen));
+
+	assert_int_equal(isc_hmac_init(hmac, "", 0, ISC_MD_SHA512),
+			 ISC_R_SUCCESS);
+	assert_int_equal(isc_hmac_final(hmac, digest, NULL), ISC_R_SUCCESS);
+}
+
+static void
+isc_hmac_md5_test(void **state) {
+	isc_hmac_t *hmac = *state;
+
+	/* Test 0 */
+	isc_hmac_test(hmac, TEST_INPUT(""), ISC_MD_MD5, TEST_INPUT(""),
+		      "74E6F7298A9C2D168935F58C001BAD88", 1);
+
+	/* Test 1 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"
+				 "\x0b\x0b\x0b\x0b\x0b\x0b"),
+		      ISC_MD_MD5,
+		      TEST_INPUT("\x48\x69\x20\x54\x68\x65\x72\x65"),
+		      "9294727A3638BB1C13F48EF8158BFC9D", 1);
+
+	/* Test 2 */
+	isc_hmac_test(hmac, TEST_INPUT("Jefe"), ISC_MD_MD5,
+		      TEST_INPUT("\x77\x68\x61\x74\x20\x64\x6f\x20\x79"
+				 "\x61\x20\x77\x61\x6e\x74\x20\x66\x6f"
+				 "\x72\x20\x6e\x6f\x74\x68\x69\x6e\x67\x3f"),
+		      "750C783E6AB0B503EAA86E310A5DB738", 1);
+
+	/* Test 3 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa"),
+		      ISC_MD_MD5,
+		      TEST_INPUT("\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"),
+		      "56BE34521D144C88DBB8C733F0E8B3F6", 1);
+	/* Test 4 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a"
+				 "\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14"
+				 "\x15\x16\x17\x18\x19"),
+		      ISC_MD_MD5,
+		      TEST_INPUT("\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"),
+		      "697EAF0ACA3A3AEA3A75164746FFAA79", 1);
+#if 0
+	/* Test 5 -- unimplemented optional functionality */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"
+				 "\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"),
+		      ISC_MD_MD5,
+		      TEST_INPUT("Test With Truncation"),
+		      "4C1A03424B55E07FE7F27BE1",
+		      1);
+	/* Test 6 -- unimplemented optional functionality */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"),
+		      ISC_MD_MD5,
+		      TEST_INPUT("Test Using Larger Than Block-Size Key - "
+				 "Hash Key First"),
+		      "AA4AE5E15272D00E95705637CE8A3B55ED402112",
+		      1);
+	/* Test 7 -- unimplemented optional functionality */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"),
+		      ISC_MD_MD5,
+		      TEST_INPUT("Test Using Larger Than Block-Size Key and "
+				 "Larger Than One Block-Size Data"),
+		      "E8E99D0F45237D786D6BBAA7965C7808BBFF1A91",
+		      1);
+#endif /* if 0 */
+}
+
+static void
+isc_hmac_sha1_test(void **state) {
+	isc_hmac_t *hmac = *state;
+
+	/* Test 0 */
+	isc_hmac_test(hmac, TEST_INPUT(""), ISC_MD_SHA1, TEST_INPUT(""),
+		      "FBDB1D1B18AA6C08324B7D64B71FB76370690E1D", 1);
+
+	/* Test 1 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"
+				 "\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"),
+		      ISC_MD_SHA1,
+		      TEST_INPUT("\x48\x69\x20\x54\x68\x65\x72\x65"),
+		      "B617318655057264E28BC0B6FB378C8EF146BE00", 1);
+	/* Test 2 */
+	isc_hmac_test(hmac, TEST_INPUT("Jefe"), ISC_MD_SHA1,
+		      TEST_INPUT("\x77\x68\x61\x74\x20\x64\x6f\x20\x79\x61"
+				 "\x20\x77\x61\x6e\x74\x20\x66\x6f\x72\x20"
+				 "\x6e\x6f\x74\x68\x69\x6e\x67\x3f"),
+		      "EFFCDF6AE5EB2FA2D27416D5F184DF9C259A7C79", 1);
+	/* Test 3 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"),
+		      ISC_MD_SHA1,
+		      TEST_INPUT("\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"),
+		      "125D7342B9AC11CD91A39AF48AA17B4F63F175D3", 1);
+	/* Test 4 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a"
+				 "\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14"
+				 "\x15\x16\x17\x18\x19"),
+		      ISC_MD_SHA1,
+		      TEST_INPUT("\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"),
+		      "4C9007F4026250C6BC8414F9BF50C86C2D7235DA", 1);
+#if 0
+	/* Test 5 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"
+				 "\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"),
+		      ISC_MD_SHA1,
+		      TEST_INPUT("Test With Truncation"),
+		      "4C1A03424B55E07FE7F27BE1",
+		      1);
+#endif /* if 0 */
+	/* Test 6 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"),
+		      ISC_MD_SHA1,
+		      TEST_INPUT("Test Using Larger Than Block-Size Key - "
+				 "Hash Key First"),
+		      "AA4AE5E15272D00E95705637CE8A3B55ED402112", 1);
+	/* Test 7 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"),
+		      ISC_MD_SHA1,
+		      TEST_INPUT("Test Using Larger Than Block-Size Key and "
+				 "Larger Than One Block-Size Data"),
+		      "E8E99D0F45237D786D6BBAA7965C7808BBFF1A91", 1);
+}
+
+static void
+isc_hmac_sha224_test(void **state) {
+	isc_hmac_t *hmac = *state;
+
+	/* Test 0 */
+	isc_hmac_test(hmac, TEST_INPUT(""), ISC_MD_SHA224, TEST_INPUT(""),
+		      "5CE14F72894662213E2748D2A6BA234B74263910CEDDE2F5"
+		      "A9271524",
+		      1);
+
+	/* Test 1 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"
+				 "\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"),
+		      ISC_MD_SHA224,
+		      TEST_INPUT("\x48\x69\x20\x54\x68\x65\x72\x65"),
+		      "896FB1128ABBDF196832107CD49DF33F47B4B1169912BA"
+		      "4F53684B22",
+		      1);
+	/* Test 2 */
+	isc_hmac_test(hmac, TEST_INPUT("Jefe"), ISC_MD_SHA224,
+		      TEST_INPUT("\x77\x68\x61\x74\x20\x64\x6f\x20\x79\x61"
+				 "\x20\x77\x61\x6e\x74\x20\x66\x6f\x72\x20"
+				 "\x6e\x6f\x74\x68\x69\x6e\x67\x3f"),
+		      "A30E01098BC6DBBF45690F3A7E9E6D0F8BBEA2A39E61480"
+		      "08FD05E44",
+		      1);
+	/* Test 3 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"),
+		      ISC_MD_SHA224,
+		      TEST_INPUT("\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"),
+		      "7FB3CB3588C6C1F6FFA9694D7D6AD2649365B0C1F65D69"
+		      "D1EC8333EA",
+		      1);
+	/* Test 4 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a"
+				 "\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14"
+				 "\x15\x16\x17\x18\x19"),
+		      ISC_MD_SHA224,
+		      TEST_INPUT("\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"),
+		      "6C11506874013CAC6A2ABC1BB382627CEC6A90D86EFC01"
+		      "2DE7AFEC5A",
+		      1);
+#if 0
+	/* Test 5 -- unimplemented optional functionality */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"
+				 "\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"),
+		      ISC_MD_SHA224,
+		      TEST_INPUT("Test With Truncation"),
+		      "4C1A03424B55E07FE7F27BE1",
+		      1);
+#endif /* if 0 */
+	/* Test 6 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa"),
+		      ISC_MD_SHA224,
+		      TEST_INPUT("Test Using Larger Than Block-Size Key - "
+				 "Hash Key First"),
+		      "95E9A0DB962095ADAEBE9B2D6F0DBCE2D499F112F2D2B7"
+		      "273FA6870E",
+		      1);
+	/* Test 7 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa"),
+		      ISC_MD_SHA224,
+		      TEST_INPUT("\x54\x68\x69\x73\x20\x69\x73\x20\x61\x20"
+				 "\x74\x65\x73\x74\x20\x75\x73\x69\x6e\x67"
+				 "\x20\x61\x20\x6c\x61\x72\x67\x65\x72\x20"
+				 "\x74\x68\x61\x6e\x20\x62\x6c\x6f\x63\x6b"
+				 "\x2d\x73\x69\x7a\x65\x20\x6b\x65\x79\x20"
+				 "\x61\x6e\x64\x20\x61\x20\x6c\x61\x72\x67"
+				 "\x65\x72\x20\x74\x68\x61\x6e\x20\x62\x6c"
+				 "\x6f\x63\x6b\x2d\x73\x69\x7a\x65\x20\x64"
+				 "\x61\x74\x61\x2e\x20\x54\x68\x65\x20\x6b"
+				 "\x65\x79\x20\x6e\x65\x65\x64\x73\x20\x74"
+				 "\x6f\x20\x62\x65\x20\x68\x61\x73\x68\x65"
+				 "\x64\x20\x62\x65\x66\x6f\x72\x65\x20\x62"
+				 "\x65\x69\x6e\x67\x20\x75\x73\x65\x64\x20"
+				 "\x62\x79\x20\x74\x68\x65\x20\x48\x4d\x41"
+				 "\x43\x20\x61\x6c\x67\x6f\x72\x69\x74\x68"
+				 "\x6d\x2e"),
+		      "3A854166AC5D9F023F54D517D0B39DBD946770DB9C2B95"
+		      "C9F6F565D1",
+		      1);
+}
+
+static void
+isc_hmac_sha256_test(void **state) {
+	isc_hmac_t *hmac = *state;
+
+	/* Test 0 */
+	isc_hmac_test(hmac, TEST_INPUT(""), ISC_MD_SHA256, TEST_INPUT(""),
+		      "B613679A0814D9EC772F95D778C35FC5FF1697C493715653"
+		      "C6C712144292C5AD",
+		      1);
+
+	/* Test 1 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"
+				 "\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"),
+		      ISC_MD_SHA256,
+		      TEST_INPUT("\x48\x69\x20\x54\x68\x65\x72\x65"),
+		      "B0344C61D8DB38535CA8AFCEAF0BF12B881DC200C9833D"
+		      "A726E9376C2E32CFF7",
+		      1);
+	/* Test 2 */
+	isc_hmac_test(hmac, TEST_INPUT("Jefe"), ISC_MD_SHA256,
+		      TEST_INPUT("\x77\x68\x61\x74\x20\x64\x6f\x20\x79\x61"
+				 "\x20\x77\x61\x6e\x74\x20\x66\x6f\x72\x20"
+				 "\x6e\x6f\x74\x68\x69\x6e\x67\x3f"),
+		      "5BDCC146BF60754E6A042426089575C75A003F089D2739"
+		      "839DEC58B964EC3843",
+		      1);
+	/* Test 3 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"),
+		      ISC_MD_SHA256,
+		      TEST_INPUT("\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"),
+		      "773EA91E36800E46854DB8EBD09181A72959098B3EF8C1"
+		      "22D9635514CED565FE",
+		      1);
+	/* Test 4 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a"
+				 "\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14"
+				 "\x15\x16\x17\x18\x19"),
+		      ISC_MD_SHA256,
+		      TEST_INPUT("\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"),
+		      "82558A389A443C0EA4CC819899F2083A85F0FAA3E578F8"
+		      "077A2E3FF46729665B",
+		      1);
+#if 0
+	/* Test 5 -- unimplemented optional functionality */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"
+				 "\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"),
+		      ISC_MD_SHA256,
+		      TEST_INPUT("Test With Truncation"),
+		      "4C1A03424B55E07FE7F27BE1",
+		      1);
+#endif /* if 0 */
+	/* Test 6 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa"),
+		      ISC_MD_SHA256,
+		      TEST_INPUT("Test Using Larger Than Block-Size Key - "
+				 "Hash Key First"),
+		      "60E431591EE0B67F0D8A26AACBF5B77F8E0BC6213728C5"
+		      "140546040F0EE37F54",
+		      1);
+	/* Test 7 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa"),
+		      ISC_MD_SHA256,
+		      TEST_INPUT("\x54\x68\x69\x73\x20\x69\x73\x20\x61\x20"
+				 "\x74\x65\x73\x74\x20\x75\x73\x69\x6e\x67"
+				 "\x20\x61\x20\x6c\x61\x72\x67\x65\x72\x20"
+				 "\x74\x68\x61\x6e\x20\x62\x6c\x6f\x63\x6b"
+				 "\x2d\x73\x69\x7a\x65\x20\x6b\x65\x79\x20"
+				 "\x61\x6e\x64\x20\x61\x20\x6c\x61\x72\x67"
+				 "\x65\x72\x20\x74\x68\x61\x6e\x20\x62\x6c"
+				 "\x6f\x63\x6b\x2d\x73\x69\x7a\x65\x20\x64"
+				 "\x61\x74\x61\x2e\x20\x54\x68\x65\x20\x6b"
+				 "\x65\x79\x20\x6e\x65\x65\x64\x73\x20\x74"
+				 "\x6f\x20\x62\x65\x20\x68\x61\x73\x68\x65"
+				 "\x64\x20\x62\x65\x66\x6f\x72\x65\x20\x62"
+				 "\x65\x69\x6e\x67\x20\x75\x73\x65\x64\x20"
+				 "\x62\x79\x20\x74\x68\x65\x20\x48\x4d\x41"
+				 "\x43\x20\x61\x6c\x67\x6f\x72\x69\x74\x68"
+				 "\x6d\x2e"),
+		      "9B09FFA71B942FCB27635FBCD5B0E944BFDC63644F0713"
+		      "938A7F51535C3A35E2",
+		      1);
+}
+
+static void
+isc_hmac_sha384_test(void **state) {
+	isc_hmac_t *hmac = *state;
+
+	/* Test 0 */
+	isc_hmac_test(hmac, TEST_INPUT(""), ISC_MD_SHA384, TEST_INPUT(""),
+		      "6C1F2EE938FAD2E24BD91298474382CA218C75DB3D83E114"
+		      "B3D4367776D14D3551289E75E8209CD4B792302840234ADC",
+		      1);
+
+	/* Test 1 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"
+				 "\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"),
+		      ISC_MD_SHA384,
+		      TEST_INPUT("\x48\x69\x20\x54\x68\x65\x72\x65"),
+		      "AFD03944D84895626B0825F4AB46907F15F9DADBE4101E"
+		      "C682AA034C7CEBC59CFAEA9EA9076EDE7F4AF152"
+		      "E8B2FA9CB6",
+		      1);
+	/* Test 2 */
+	isc_hmac_test(hmac, TEST_INPUT("Jefe"), ISC_MD_SHA384,
+		      TEST_INPUT("\x77\x68\x61\x74\x20\x64\x6f\x20\x79\x61"
+				 "\x20\x77\x61\x6e\x74\x20\x66\x6f\x72\x20"
+				 "\x6e\x6f\x74\x68\x69\x6e\x67\x3f"),
+		      "AF45D2E376484031617F78D2B58A6B1B9C7EF464F5A01B"
+		      "47E42EC3736322445E8E2240CA5E69E2C78B3239"
+		      "ECFAB21649",
+		      1);
+	/* Test 3 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"),
+		      ISC_MD_SHA384,
+		      TEST_INPUT("\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"),
+		      "88062608D3E6AD8A0AA2ACE014C8A86F0AA635D947AC9F"
+		      "EBE83EF4E55966144B2A5AB39DC13814B94E3AB6"
+		      "E101A34F27",
+		      1);
+	/* Test 4 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a"
+				 "\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14"
+				 "\x15\x16\x17\x18\x19"),
+		      ISC_MD_SHA384,
+		      TEST_INPUT("\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"),
+		      "3E8A69B7783C25851933AB6290AF6CA77A998148085000"
+		      "9CC5577C6E1F573B4E6801DD23C4A7D679CCF8A3"
+		      "86C674CFFB",
+		      1);
+#if 0
+	/* Test 5 -- unimplemented optional functionality */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"
+				 "\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"),
+		      ISC_MD_SHA384,
+		      TEST_INPUT("Test With Truncation"),
+		      "4C1A03424B55E07FE7F27BE1",
+		      1);
+#endif /* if 0 */
+	/* Test 6 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa"),
+		      ISC_MD_SHA384,
+		      TEST_INPUT("Test Using Larger Than Block-Size Key - "
+				 "Hash Key First"),
+		      "4ECE084485813E9088D2C63A041BC5B44F9EF1012A2B58"
+		      "8F3CD11F05033AC4C60C2EF6AB4030FE8296248D"
+		      "F163F44952",
+		      1);
+	/* Test 7 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa"),
+		      ISC_MD_SHA384,
+		      TEST_INPUT("\x54\x68\x69\x73\x20\x69\x73\x20\x61\x20"
+				 "\x74\x65\x73\x74\x20\x75\x73\x69\x6e\x67"
+				 "\x20\x61\x20\x6c\x61\x72\x67\x65\x72\x20"
+				 "\x74\x68\x61\x6e\x20\x62\x6c\x6f\x63\x6b"
+				 "\x2d\x73\x69\x7a\x65\x20\x6b\x65\x79\x20"
+				 "\x61\x6e\x64\x20\x61\x20\x6c\x61\x72\x67"
+				 "\x65\x72\x20\x74\x68\x61\x6e\x20\x62\x6c"
+				 "\x6f\x63\x6b\x2d\x73\x69\x7a\x65\x20\x64"
+				 "\x61\x74\x61\x2e\x20\x54\x68\x65\x20\x6b"
+				 "\x65\x79\x20\x6e\x65\x65\x64\x73\x20\x74"
+				 "\x6f\x20\x62\x65\x20\x68\x61\x73\x68\x65"
+				 "\x64\x20\x62\x65\x66\x6f\x72\x65\x20\x62"
+				 "\x65\x69\x6e\x67\x20\x75\x73\x65\x64\x20"
+				 "\x62\x79\x20\x74\x68\x65\x20\x48\x4d\x41"
+				 "\x43\x20\x61\x6c\x67\x6f\x72\x69\x74\x68"
+				 "\x6d\x2e"),
+		      "6617178E941F020D351E2F254E8FD32C602420FEB0B8FB"
+		      "9ADCCEBB82461E99C5A678CC31E799176D3860E6"
+		      "110C46523E",
+		      1);
+}
+
+static void
+isc_hmac_sha512_test(void **state) {
+	isc_hmac_t *hmac = *state;
+
+	/* Test 0 */
+	isc_hmac_test(hmac, TEST_INPUT(""), ISC_MD_SHA512, TEST_INPUT(""),
+		      "B936CEE86C9F87AA5D3C6F2E84CB5A4239A5FE50480A6EC6"
+		      "6B70AB5B1F4AC6730C6C515421B327EC1D69402E53DFB49A"
+		      "D7381EB067B338FD7B0CB22247225D47",
+		      1);
+
+	/* Test 1 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"
+				 "\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b"),
+		      ISC_MD_SHA512,
+		      TEST_INPUT("\x48\x69\x20\x54\x68\x65\x72\x65"),
+		      "87AA7CDEA5EF619D4FF0B4241A1D6CB02379F4E2CE4EC2"
+		      "787AD0B30545E17CDEDAA833B7D6B8A702038B27"
+		      "4EAEA3F4E4BE9D914EEB61F1702E696C203A126854",
+		      1);
+	/* Test 2 */
+	isc_hmac_test(hmac, TEST_INPUT("Jefe"), ISC_MD_SHA512,
+		      TEST_INPUT("\x77\x68\x61\x74\x20\x64\x6f\x20\x79\x61"
+				 "\x20\x77\x61\x6e\x74\x20\x66\x6f\x72\x20"
+				 "\x6e\x6f\x74\x68\x69\x6e\x67\x3f"),
+		      "164B7A7BFCF819E2E395FBE73B56E0A387BD64222E831F"
+		      "D610270CD7EA2505549758BF75C05A994A6D034F"
+		      "65F8F0E6FDCAEAB1A34D4A6B4B636E070A38BCE737",
+		      1);
+	/* Test 3 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"),
+		      ISC_MD_SHA512,
+		      TEST_INPUT("\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
+				 "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"),
+		      "FA73B0089D56A284EFB0F0756C890BE9B1B5DBDD8EE81A"
+		      "3655F83E33B2279D39BF3E848279A722C806B485"
+		      "A47E67C807B946A337BEE8942674278859E13292FB",
+		      1);
+	/* Test 4 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a"
+				 "\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14"
+				 "\x15\x16\x17\x18\x19"),
+		      ISC_MD_SHA512,
+		      TEST_INPUT("\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
+				 "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"),
+		      "B0BA465637458C6990E5A8C5F61D4AF7E576D97FF94B87"
+		      "2DE76F8050361EE3DBA91CA5C11AA25EB4D67927"
+		      "5CC5788063A5F19741120C4F2DE2ADEBEB10A298DD",
+		      1);
+#if 0
+	/* Test 5 -- unimplemented optional functionality */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"
+				 "\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c"),
+		      ISC_MD_SHA512,
+		      TEST_INPUT("Test With Truncation"),
+		      "4C1A03424B55E07FE7F27BE1",
+		      1);
+#endif /* if 0 */
+	/* Test 6 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa"),
+		      ISC_MD_SHA512,
+		      TEST_INPUT("Test Using Larger Than Block-Size Key - "
+				 "Hash Key First"),
+		      "80B24263C7C1A3EBB71493C1DD7BE8B49B46D1F41B4AEE"
+		      "C1121B013783F8F3526B56D037E05F2598BD0FD2"
+		      "215D6A1E5295E64F73F63F0AEC8B915A985D786598",
+		      1);
+	/* Test 7 */
+	isc_hmac_test(hmac,
+		      TEST_INPUT("\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
+				 "\xaa"),
+		      ISC_MD_SHA512,
+		      TEST_INPUT("\x54\x68\x69\x73\x20\x69\x73\x20\x61\x20"
+				 "\x74\x65\x73\x74\x20\x75\x73\x69\x6e\x67"
+				 "\x20\x61\x20\x6c\x61\x72\x67\x65\x72\x20"
+				 "\x74\x68\x61\x6e\x20\x62\x6c\x6f\x63\x6b"
+				 "\x2d\x73\x69\x7a\x65\x20\x6b\x65\x79\x20"
+				 "\x61\x6e\x64\x20\x61\x20\x6c\x61\x72\x67"
+				 "\x65\x72\x20\x74\x68\x61\x6e\x20\x62\x6c"
+				 "\x6f\x63\x6b\x2d\x73\x69\x7a\x65\x20\x64"
+				 "\x61\x74\x61\x2e\x20\x54\x68\x65\x20\x6b"
+				 "\x65\x79\x20\x6e\x65\x65\x64\x73\x20\x74"
+				 "\x6f\x20\x62\x65\x20\x68\x61\x73\x68\x65"
+				 "\x64\x20\x62\x65\x66\x6f\x72\x65\x20\x62"
+				 "\x65\x69\x6e\x67\x20\x75\x73\x65\x64\x20"
+				 "\x62\x79\x20\x74\x68\x65\x20\x48\x4d\x41"
+				 "\x43\x20\x61\x6c\x67\x6f\x72\x69\x74\x68"
+				 "\x6d\x2e"),
+		      "E37B6A775DC87DBAA4DFA9F96E5E3FFDDEBD71F8867289"
+		      "865DF5A32D20CDC944B6022CAC3C4982B10D5EEB"
+		      "55C3E4DE15134676FB6DE0446065C97440FA8C6A58",
+		      1);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		/* isc_hmac_new() */
+		cmocka_unit_test(isc_hmac_new_test),
+
+		/* isc_hmac_init() */
+		cmocka_unit_test_setup_teardown(isc_hmac_init_test, _reset,
+						_reset),
+
+		/* isc_hmac_reset() */
+		cmocka_unit_test_setup_teardown(isc_hmac_reset_test, _reset,
+						_reset),
+
+		/* isc_hmac_init() -> isc_hmac_update() -> isc_hmac_final() */
+		cmocka_unit_test(isc_hmac_md5_test),
+		cmocka_unit_test(isc_hmac_sha1_test),
+		cmocka_unit_test(isc_hmac_sha224_test),
+		cmocka_unit_test(isc_hmac_sha256_test),
+		cmocka_unit_test(isc_hmac_sha384_test),
+		cmocka_unit_test(isc_hmac_sha512_test),
+
+		cmocka_unit_test_setup_teardown(isc_hmac_update_test, _reset,
+						_reset),
+		cmocka_unit_test_setup_teardown(isc_hmac_final_test, _reset,
+						_reset),
+
+		cmocka_unit_test(isc_hmac_free_test),
+	};
+
+	return (cmocka_run_group_tests(tests, _setup, _teardown));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/ht_test.c b/lib/isc/tests/ht_test.c
new file mode 100644
index 0000000..30cc615
--- /dev/null
+++ b/lib/isc/tests/ht_test.c
@@ -0,0 +1,358 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <inttypes.h>
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/hash.h>
+#include <isc/ht.h>
+#include <isc/mem.h>
+#include <isc/print.h>
+#include <isc/string.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+static void
+test_ht_full(int bits, uintptr_t count) {
+	isc_ht_t *ht = NULL;
+	isc_result_t result;
+	uintptr_t i;
+
+	isc_ht_init(&ht, test_mctx, bits);
+	assert_non_null(ht);
+
+	for (i = 1; i < count; i++) {
+		/*
+		 * Note: snprintf() is followed with strlcat()
+		 * to ensure we are always filling the 16 byte key.
+		 */
+		unsigned char key[16];
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, " key of a raw hashtable!!", sizeof(key));
+		result = isc_ht_add(ht, key, 16, (void *)i);
+		assert_int_equal(result, ISC_R_SUCCESS);
+	}
+
+	for (i = 1; i < count; i++) {
+		unsigned char key[16];
+		void *f = NULL;
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, " key of a raw hashtable!!", sizeof(key));
+		result = isc_ht_find(ht, key, 16, &f);
+		assert_int_equal(result, ISC_R_SUCCESS);
+		assert_ptr_equal((void *)i, (uintptr_t)f);
+	}
+
+	for (i = 1; i < count; i++) {
+		unsigned char key[16];
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, " key of a raw hashtable!!", sizeof(key));
+		result = isc_ht_add(ht, key, 16, (void *)i);
+		assert_int_equal(result, ISC_R_EXISTS);
+	}
+
+	for (i = 1; i < count; i++) {
+		char key[64];
+		/*
+		 * Note: the key size is now strlen(key) which is bigger
+		 * then the keys added above.
+		 */
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, " key of a raw hashtable!!", sizeof(key));
+		result = isc_ht_add(ht, (const unsigned char *)key, strlen(key),
+				    (void *)i);
+		assert_int_equal(result, ISC_R_SUCCESS);
+	}
+
+	for (i = 1; i < count; i++) {
+		unsigned char key[16];
+		void *f = NULL;
+		/*
+		 * Note: case of KEY is now in capitals,
+		 */
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, " KEY of a raw hashtable!!", sizeof(key));
+		result = isc_ht_find(ht, key, 16, &f);
+		assert_int_equal(result, ISC_R_NOTFOUND);
+		assert_null(f);
+	}
+
+	for (i = 1; i < count; i++) {
+		char key[64];
+		void *f = NULL;
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, " key of a raw hashtable!!", sizeof(key));
+		result = isc_ht_find(ht, (const unsigned char *)key,
+				     strlen(key), &f);
+		assert_int_equal(result, ISC_R_SUCCESS);
+		assert_ptr_equal(f, (void *)i);
+	}
+
+	for (i = 1; i < count; i++) {
+		unsigned char key[16];
+		void *f = NULL;
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, " key of a raw hashtable!!", sizeof(key));
+		result = isc_ht_delete(ht, key, 16);
+		assert_int_equal(result, ISC_R_SUCCESS);
+		result = isc_ht_find(ht, key, 16, &f);
+		assert_int_equal(result, ISC_R_NOTFOUND);
+		assert_null(f);
+	}
+
+	for (i = 1; i < count; i++) {
+		unsigned char key[16];
+		/*
+		 * Note: upper case KEY.
+		 */
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, " KEY of a raw hashtable!!", sizeof(key));
+		result = isc_ht_add(ht, key, 16, (void *)i);
+		assert_int_equal(result, ISC_R_SUCCESS);
+	}
+
+	for (i = 1; i < count; i++) {
+		char key[64];
+		void *f = NULL;
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, " key of a raw hashtable!!", sizeof(key));
+		result = isc_ht_delete(ht, (const unsigned char *)key,
+				       strlen(key));
+		assert_int_equal(result, ISC_R_SUCCESS);
+		result = isc_ht_find(ht, (const unsigned char *)key,
+				     strlen(key), &f);
+		assert_int_equal(result, ISC_R_NOTFOUND);
+		assert_null(f);
+	}
+
+	for (i = 1; i < count; i++) {
+		unsigned char key[16];
+		void *f = NULL;
+		/*
+		 * Note: case of KEY is now in capitals,
+		 */
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, " KEY of a raw hashtable!!", sizeof(key));
+		result = isc_ht_find(ht, key, 16, &f);
+		assert_int_equal(result, ISC_R_SUCCESS);
+		assert_ptr_equal((void *)i, (uintptr_t)f);
+	}
+
+	for (i = 1; i < count; i++) {
+		unsigned char key[16];
+		void *f = NULL;
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, " key of a raw hashtable!!", sizeof(key));
+		result = isc_ht_find(ht, key, 16, &f);
+		assert_int_equal(result, ISC_R_NOTFOUND);
+		assert_null(f);
+	}
+
+	isc_ht_destroy(&ht);
+	assert_null(ht);
+}
+
+static void
+test_ht_iterator() {
+	isc_ht_t *ht = NULL;
+	isc_result_t result;
+	isc_ht_iter_t *iter = NULL;
+	uintptr_t i;
+	uintptr_t count = 10000;
+	uint32_t walked;
+	unsigned char key[16];
+	size_t tksize;
+
+	isc_ht_init(&ht, test_mctx, 16);
+	assert_non_null(ht);
+	for (i = 1; i <= count; i++) {
+		/*
+		 * Note that the string we're snprintfing is always > 16 bytes
+		 * so we are always filling the key.
+		 */
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, "key of a raw hashtable!!", sizeof(key));
+		result = isc_ht_add(ht, key, 16, (void *)i);
+		assert_int_equal(result, ISC_R_SUCCESS);
+	}
+
+	walked = 0;
+	isc_ht_iter_create(ht, &iter);
+
+	for (result = isc_ht_iter_first(iter); result == ISC_R_SUCCESS;
+	     result = isc_ht_iter_next(iter))
+	{
+		unsigned char *tkey = NULL;
+		void *v = NULL;
+
+		isc_ht_iter_current(iter, &v);
+		isc_ht_iter_currentkey(iter, &tkey, &tksize);
+		assert_int_equal(tksize, 16);
+		i = (uintptr_t)v;
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, "key of a raw hashtable!!", sizeof(key));
+		assert_memory_equal(key, tkey, 16);
+		walked++;
+	}
+	assert_int_equal(walked, count);
+	assert_int_equal(result, ISC_R_NOMORE);
+
+	/* erase odd */
+	walked = 0;
+	result = isc_ht_iter_first(iter);
+	while (result == ISC_R_SUCCESS) {
+		unsigned char *tkey = NULL;
+		void *v = NULL;
+
+		isc_ht_iter_current(iter, &v);
+		isc_ht_iter_currentkey(iter, &tkey, &tksize);
+		assert_int_equal(tksize, 16);
+		i = (uintptr_t)v;
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, "key of a raw hashtable!!", sizeof(key));
+		assert_memory_equal(key, tkey, 16);
+		if ((uintptr_t)v % 2 == 0) {
+			result = isc_ht_iter_delcurrent_next(iter);
+		} else {
+			result = isc_ht_iter_next(iter);
+		}
+		walked++;
+	}
+	assert_int_equal(result, ISC_R_NOMORE);
+	assert_int_equal(walked, count);
+
+	/* erase even */
+	walked = 0;
+	result = isc_ht_iter_first(iter);
+	while (result == ISC_R_SUCCESS) {
+		unsigned char *tkey = NULL;
+		void *v = NULL;
+
+		isc_ht_iter_current(iter, &v);
+		isc_ht_iter_currentkey(iter, &tkey, &tksize);
+		assert_int_equal(tksize, 16);
+		i = (uintptr_t)v;
+		snprintf((char *)key, sizeof(key), "%u", (unsigned int)i);
+		strlcat((char *)key, "key of a raw hashtable!!", sizeof(key));
+		assert_memory_equal(key, tkey, 16);
+		if ((uintptr_t)v % 2 == 1) {
+			result = isc_ht_iter_delcurrent_next(iter);
+		} else {
+			result = isc_ht_iter_next(iter);
+		}
+		walked++;
+	}
+	assert_int_equal(result, ISC_R_NOMORE);
+	assert_int_equal(walked, count / 2);
+
+	walked = 0;
+	for (result = isc_ht_iter_first(iter); result == ISC_R_SUCCESS;
+	     result = isc_ht_iter_next(iter))
+	{
+		walked++;
+	}
+
+	assert_int_equal(result, ISC_R_NOMORE);
+	assert_int_equal(walked, 0);
+
+	isc_ht_iter_destroy(&iter);
+	assert_null(iter);
+
+	isc_ht_destroy(&ht);
+	assert_null(ht);
+}
+
+/* 20 bit, 200K elements test */
+static void
+isc_ht_20(void **state) {
+	UNUSED(state);
+	test_ht_full(20, 200000);
+}
+
+/* 8 bit, 20000 elements crowded test */
+static void
+isc_ht_8(void **state) {
+	UNUSED(state);
+	test_ht_full(8, 20000);
+}
+
+/* 8 bit, 100 elements corner case test */
+static void
+isc_ht_1(void **state) {
+	UNUSED(state);
+	test_ht_full(1, 100);
+}
+
+/* test hashtable iterator */
+static void
+isc_ht_iterator_test(void **state) {
+	UNUSED(state);
+	test_ht_iterator();
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(isc_ht_20),
+		cmocka_unit_test(isc_ht_8),
+		cmocka_unit_test(isc_ht_1),
+		cmocka_unit_test(isc_ht_iterator_test),
+	};
+
+	return (cmocka_run_group_tests(tests, _setup, _teardown));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/isctest.c b/lib/isc/tests/isctest.c
new file mode 100644
index 0000000..3b0235b
--- /dev/null
+++ b/lib/isc/tests/isctest.c
@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#include "isctest.h"
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include <isc/buffer.h>
+#include <isc/hash.h>
+#include <isc/managers.h>
+#include <isc/mem.h>
+#include <isc/os.h>
+#include <isc/socket.h>
+#include <isc/string.h>
+#include <isc/task.h>
+#include <isc/timer.h>
+#include <isc/util.h>
+
+isc_mem_t *test_mctx = NULL;
+isc_log_t *test_lctx = NULL;
+isc_taskmgr_t *taskmgr = NULL;
+isc_timermgr_t *timermgr = NULL;
+isc_socketmgr_t *socketmgr = NULL;
+isc_nm_t *netmgr = NULL;
+isc_task_t *maintask = NULL;
+int ncpus;
+
+static bool test_running = false;
+
+/*
+ * Logging categories: this needs to match the list in bin/named/log.c.
+ */
+static isc_logcategory_t categories[] = { { "", 0 },
+					  { "client", 0 },
+					  { "network", 0 },
+					  { "update", 0 },
+					  { "queries", 0 },
+					  { "unmatched", 0 },
+					  { "update-security", 0 },
+					  { "query-errors", 0 },
+					  { NULL, 0 } };
+
+static void
+cleanup_managers(void) {
+	if (maintask != NULL) {
+		isc_task_shutdown(maintask);
+		isc_task_destroy(&maintask);
+	}
+
+	isc_managers_destroy(netmgr == NULL ? NULL : &netmgr,
+			     taskmgr == NULL ? NULL : &taskmgr);
+
+	if (socketmgr != NULL) {
+		isc_socketmgr_destroy(&socketmgr);
+	}
+	if (timermgr != NULL) {
+		isc_timermgr_destroy(&timermgr);
+	}
+}
+
+static isc_result_t
+create_managers(unsigned int workers) {
+	isc_result_t result;
+	char *p;
+
+	if (workers == 0) {
+		workers = isc_os_ncpus();
+	}
+
+	p = getenv("ISC_TASK_WORKERS");
+	if (p != NULL) {
+		workers = atoi(p);
+	}
+
+	CHECK(isc_managers_create(test_mctx, workers, 0, &netmgr, &taskmgr));
+	CHECK(isc_task_create_bound(taskmgr, 0, &maintask, 0));
+	isc_taskmgr_setexcltask(taskmgr, maintask);
+
+	CHECK(isc_timermgr_create(test_mctx, &timermgr));
+	CHECK(isc_socketmgr_create(test_mctx, &socketmgr));
+	return (ISC_R_SUCCESS);
+
+cleanup:
+	cleanup_managers();
+	return (result);
+}
+
+isc_result_t
+isc_test_begin(FILE *logfile, bool start_managers, unsigned int workers) {
+	isc_result_t result;
+
+	INSIST(!test_running);
+	test_running = true;
+
+	isc_mem_debugging |= ISC_MEM_DEBUGRECORD;
+
+	INSIST(test_mctx == NULL);
+	isc_mem_create(&test_mctx);
+
+	if (logfile != NULL) {
+		isc_logdestination_t destination;
+		isc_logconfig_t *logconfig = NULL;
+
+		INSIST(test_lctx == NULL);
+		isc_log_create(test_mctx, &test_lctx, &logconfig);
+		isc_log_registercategories(test_lctx, categories);
+		isc_log_setcontext(test_lctx);
+
+		destination.file.stream = logfile;
+		destination.file.name = NULL;
+		destination.file.versions = ISC_LOG_ROLLNEVER;
+		destination.file.maximum_size = 0;
+		isc_log_createchannel(logconfig, "stderr", ISC_LOG_TOFILEDESC,
+				      ISC_LOG_DYNAMIC, &destination, 0);
+		CHECK(isc_log_usechannel(logconfig, "stderr", NULL, NULL));
+	}
+
+	ncpus = isc_os_ncpus();
+
+	if (start_managers) {
+		CHECK(create_managers(workers));
+	}
+
+	return (ISC_R_SUCCESS);
+
+cleanup:
+	isc_test_end();
+	return (result);
+}
+
+void
+isc_test_end(void) {
+	if (maintask != NULL) {
+		isc_task_detach(&maintask);
+	}
+
+	cleanup_managers();
+
+	if (test_lctx != NULL) {
+		isc_log_destroy(&test_lctx);
+	}
+	if (test_mctx != NULL) {
+		isc_mem_destroy(&test_mctx);
+	}
+
+	test_running = false;
+}
+
+/*
+ * Sleep for 'usec' microseconds.
+ */
+void
+isc_test_nap(uint32_t usec) {
+	struct timespec ts;
+
+	ts.tv_sec = usec / 1000000;
+	ts.tv_nsec = (usec % 1000000) * 1000;
+	nanosleep(&ts, NULL);
+}
diff --git a/lib/isc/tests/isctest.h b/lib/isc/tests/isctest.h
new file mode 100644
index 0000000..4f88e91
--- /dev/null
+++ b/lib/isc/tests/isctest.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#include <inttypes.h>
+#include <stdbool.h>
+
+#include <isc/buffer.h>
+#include <isc/hash.h>
+#include <isc/log.h>
+#include <isc/mem.h>
+#include <isc/netmgr.h>
+#include <isc/print.h>
+#include <isc/result.h>
+#include <isc/string.h>
+#include <isc/task.h>
+#include <isc/timer.h>
+#include <isc/util.h>
+
+#define CHECK(r)                             \
+	do {                                 \
+		result = (r);                \
+		if (result != ISC_R_SUCCESS) \
+			goto cleanup;        \
+	} while (0)
+
+extern isc_mem_t *test_mctx;
+extern isc_log_t *test_lctx;
+extern isc_taskmgr_t *taskmgr;
+extern isc_timermgr_t *timermgr;
+extern isc_socketmgr_t *socketmgr;
+extern isc_nm_t *netmgr;
+extern int ncpus;
+
+isc_result_t
+isc_test_begin(FILE *logfile, bool start_managers, unsigned int workers);
+/*%<
+ * Begin test, logging to 'logfile' or default if not specified.
+ *
+ * If 'start_managers' is set, start a task manager, timer manager,
+ * and socket manager.
+ *
+ * If 'workers' is zero, use the number of CPUs on the system as a default;
+ * otherwise, set up the task manager with the specified number of worker
+ * threads. The environment variable ISC_TASK_WORKERS overrides this value.
+ */
+
+void
+isc_test_end(void);
+
+void
+isc_test_nap(uint32_t usec);
diff --git a/lib/isc/tests/lex_test.c b/lib/isc/tests/lex_test.c
new file mode 100644
index 0000000..4f8f80d
--- /dev/null
+++ b/lib/isc/tests/lex_test.c
@@ -0,0 +1,432 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/buffer.h>
+#include <isc/lex.h>
+#include <isc/mem.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+#define AS_STR(x) (x).value.as_textregion.base
+
+static bool debug = false;
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+/* check handling of 0xff */
+static void
+lex_0xff(void **state) {
+	isc_result_t result;
+	isc_lex_t *lex = NULL;
+	isc_buffer_t death_buf;
+	isc_token_t token;
+
+	unsigned char death[] = { EOF, 'A' };
+
+	UNUSED(state);
+
+	result = isc_lex_create(test_mctx, 1024, &lex);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_buffer_init(&death_buf, &death[0], sizeof(death));
+	isc_buffer_add(&death_buf, sizeof(death));
+
+	result = isc_lex_openbuffer(lex, &death_buf);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_lex_gettoken(lex, 0, &token);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_lex_destroy(&lex);
+}
+
+/* check setting of source line */
+static void
+lex_setline(void **state) {
+	isc_result_t result;
+	isc_lex_t *lex = NULL;
+	unsigned char text[] = "text\nto\nbe\nprocessed\nby\nlexer";
+	isc_buffer_t buf;
+	isc_token_t token;
+	unsigned long line;
+	int i;
+
+	UNUSED(state);
+
+	result = isc_lex_create(test_mctx, 1024, &lex);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_buffer_init(&buf, &text[0], sizeof(text));
+	isc_buffer_add(&buf, sizeof(text));
+
+	result = isc_lex_openbuffer(lex, &buf);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_lex_setsourceline(lex, 100);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	for (i = 0; i < 6; i++) {
+		result = isc_lex_gettoken(lex, 0, &token);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		line = isc_lex_getsourceline(lex);
+		assert_int_equal(line, 100U + i);
+	}
+
+	result = isc_lex_gettoken(lex, 0, &token);
+	assert_int_equal(result, ISC_R_EOF);
+
+	line = isc_lex_getsourceline(lex);
+	assert_int_equal(line, 105U);
+
+	isc_lex_destroy(&lex);
+}
+
+static struct {
+	const char *text;
+	const char *string_value;
+	isc_result_t string_result;
+	isc_tokentype_t string_type;
+	const char *qstring_value;
+	isc_result_t qstring_result;
+	isc_tokentype_t qstring_type;
+	const char *qvpair_value;
+	isc_result_t qvpair_result;
+	isc_tokentype_t qvpair_type;
+} parse_tests[] = {
+	{ "", "", ISC_R_SUCCESS, isc_tokentype_eof, "", ISC_R_SUCCESS,
+	  isc_tokentype_eof, "", ISC_R_SUCCESS, isc_tokentype_eof },
+	{ "1234", "1234", ISC_R_SUCCESS, isc_tokentype_string, "1234",
+	  ISC_R_SUCCESS, isc_tokentype_string, "1234", ISC_R_SUCCESS,
+	  isc_tokentype_string },
+	{ "1234=", "1234=", ISC_R_SUCCESS, isc_tokentype_string,
+	  "1234=", ISC_R_SUCCESS, isc_tokentype_string, "1234=", ISC_R_SUCCESS,
+	  isc_tokentype_vpair },
+	{ "1234=foo", "1234=foo", ISC_R_SUCCESS, isc_tokentype_string,
+	  "1234=foo", ISC_R_SUCCESS, isc_tokentype_string, "1234=foo",
+	  ISC_R_SUCCESS, isc_tokentype_vpair },
+	{ "1234=\"foo", "1234=\"foo", ISC_R_SUCCESS, isc_tokentype_string,
+	  "1234=\"foo", ISC_R_SUCCESS, isc_tokentype_string, NULL,
+	  ISC_R_UNEXPECTEDEND, 0 },
+	{ "1234=\"foo\"", "1234=\"foo\"", ISC_R_SUCCESS, isc_tokentype_string,
+	  "1234=\"foo\"", ISC_R_SUCCESS, isc_tokentype_string, "1234=foo",
+	  ISC_R_SUCCESS, isc_tokentype_qvpair },
+	{ "key", "key", ISC_R_SUCCESS, isc_tokentype_string, "key",
+	  ISC_R_SUCCESS, isc_tokentype_string, "key", ISC_R_SUCCESS,
+	  isc_tokentype_string },
+	{ "\"key=", "\"key=", ISC_R_SUCCESS, isc_tokentype_string, NULL,
+	  ISC_R_UNEXPECTEDEND, 0, "\"key=", ISC_R_SUCCESS,
+	  isc_tokentype_vpair },
+	{ "\"key=\"", "\"key=\"", ISC_R_SUCCESS, isc_tokentype_string, "key=",
+	  ISC_R_SUCCESS, isc_tokentype_qstring, NULL, ISC_R_UNEXPECTEDEND, 0 },
+	{ "key=\"\"", "key=\"\"", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key=\"\"", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key=", ISC_R_SUCCESS, isc_tokentype_qvpair },
+	{ "key=\"a b\"", "key=\"a", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key=\"a", ISC_R_SUCCESS, isc_tokentype_string, "key=a b",
+	  ISC_R_SUCCESS, isc_tokentype_qvpair },
+	{ "key=\"a\tb\"", "key=\"a", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key=\"a", ISC_R_SUCCESS, isc_tokentype_string, "key=a\tb",
+	  ISC_R_SUCCESS, isc_tokentype_qvpair },
+	/* double quote not immediately after '=' is not special. */
+	{ "key=c\"a b\"", "key=c\"a", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key=c\"a", ISC_R_SUCCESS, isc_tokentype_string, "key=c\"a",
+	  ISC_R_SUCCESS, isc_tokentype_vpair },
+	/* remove special meaning for '=' by escaping */
+	{ "key\\=", "key\\=", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key\\=", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key\\=", ISC_R_SUCCESS, isc_tokentype_string },
+	{ "key\\=\"a\"", "key\\=\"a\"", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key\\=\"a\"", ISC_R_SUCCESS, isc_tokentype_string, "key\\=\"a\"",
+	  ISC_R_SUCCESS, isc_tokentype_string },
+	{ "key\\=\"a \"", "key\\=\"a", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key\\=\"a", ISC_R_SUCCESS, isc_tokentype_string, "key\\=\"a",
+	  ISC_R_SUCCESS, isc_tokentype_string },
+	/* vpair with a key of 'key\=' (would need to be deescaped) */
+	{ "key\\==", "key\\==", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key\\==", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key\\==", ISC_R_SUCCESS, isc_tokentype_vpair },
+	{ "key\\==\"\"", "key\\==\"\"", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key\\==\"\"", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key\\==", ISC_R_SUCCESS, isc_tokentype_qvpair },
+	{ "key=\\\\\\\\", "key=\\\\\\\\", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key=\\\\\\\\", ISC_R_SUCCESS, isc_tokentype_string, "key=\\\\\\\\",
+	  ISC_R_SUCCESS, isc_tokentype_vpair },
+	{ "key=\\\\\\\"", "key=\\\\\\\"", ISC_R_SUCCESS, isc_tokentype_string,
+	  "key=\\\\\\\"", ISC_R_SUCCESS, isc_tokentype_string, "key=\\\\\\\"",
+	  ISC_R_SUCCESS, isc_tokentype_vpair },
+	/* incomplete escape sequence */
+	{ "key=\\\"\\", NULL, ISC_R_UNEXPECTEDEND, isc_tokentype_string, NULL,
+	  ISC_R_UNEXPECTEDEND, 0, NULL, ISC_R_UNEXPECTEDEND, 0 },
+	/* incomplete escape sequence */
+	{ "key=\\", NULL, ISC_R_UNEXPECTEDEND, isc_tokentype_string, NULL,
+	  ISC_R_UNEXPECTEDEND, 0, NULL, ISC_R_UNEXPECTEDEND, 0 },
+};
+
+/*%
+ * string
+ */
+static void
+lex_string(void **state) {
+	isc_buffer_t buf;
+	isc_lex_t *lex = NULL;
+	isc_result_t result;
+	isc_token_t token;
+	size_t i;
+
+	UNUSED(state);
+
+	for (i = 0; i < ARRAY_SIZE(parse_tests); i++) {
+		result = isc_lex_create(test_mctx, 1024, &lex);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		isc_buffer_constinit(&buf, parse_tests[i].text,
+				     strlen(parse_tests[i].text));
+		isc_buffer_add(&buf, strlen(parse_tests[i].text));
+
+		result = isc_lex_openbuffer(lex, &buf);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		result = isc_lex_setsourceline(lex, 100);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		memset(&token, 0, sizeof(token));
+		result = isc_lex_getmastertoken(lex, &token,
+						isc_tokentype_string, true);
+		if (debug) {
+			fprintf(stdout, "# '%s' -> result=%s/%s, type=%d/%d\n",
+				parse_tests[i].text, isc_result_toid(result),
+				isc_result_toid(parse_tests[i].string_result),
+				token.type, parse_tests[i].string_type);
+		}
+
+		assert_int_equal(result, parse_tests[i].string_result);
+		if (result == ISC_R_SUCCESS) {
+			switch (token.type) {
+			case isc_tokentype_string:
+			case isc_tokentype_qstring:
+			case isc_tokentype_vpair:
+			case isc_tokentype_qvpair:
+				if (debug) {
+					fprintf(stdout, "# value='%s'\n",
+						AS_STR(token));
+				}
+				assert_int_equal(token.type,
+						 parse_tests[i].string_type);
+				assert_string_equal(
+					AS_STR(token),
+					parse_tests[i].string_value);
+				break;
+			default:
+				assert_int_equal(token.type,
+						 parse_tests[i].string_type);
+				break;
+			}
+		}
+
+		isc_lex_destroy(&lex);
+	}
+}
+
+/*%
+ * qstring
+ */
+static void
+lex_qstring(void **state) {
+	isc_buffer_t buf;
+	isc_lex_t *lex = NULL;
+	isc_result_t result;
+	isc_token_t token;
+	size_t i;
+
+	UNUSED(state);
+
+	for (i = 0; i < ARRAY_SIZE(parse_tests); i++) {
+		result = isc_lex_create(test_mctx, 1024, &lex);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		isc_buffer_constinit(&buf, parse_tests[i].text,
+				     strlen(parse_tests[i].text));
+		isc_buffer_add(&buf, strlen(parse_tests[i].text));
+
+		result = isc_lex_openbuffer(lex, &buf);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		result = isc_lex_setsourceline(lex, 100);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		memset(&token, 0, sizeof(token));
+		result = isc_lex_getmastertoken(lex, &token,
+						isc_tokentype_qstring, true);
+		if (debug) {
+			fprintf(stdout, "# '%s' -> result=%s/%s, type=%d/%d\n",
+				parse_tests[i].text, isc_result_toid(result),
+				isc_result_toid(parse_tests[i].qstring_result),
+				token.type, parse_tests[i].qstring_type);
+		}
+
+		assert_int_equal(result, parse_tests[i].qstring_result);
+		if (result == ISC_R_SUCCESS) {
+			switch (token.type) {
+			case isc_tokentype_string:
+			case isc_tokentype_qstring:
+			case isc_tokentype_vpair:
+			case isc_tokentype_qvpair:
+				if (debug) {
+					fprintf(stdout, "# value='%s'\n",
+						AS_STR(token));
+				}
+				assert_int_equal(token.type,
+						 parse_tests[i].qstring_type);
+				assert_string_equal(
+					AS_STR(token),
+					parse_tests[i].qstring_value);
+				break;
+			default:
+				assert_int_equal(token.type,
+						 parse_tests[i].qstring_type);
+				break;
+			}
+		}
+
+		isc_lex_destroy(&lex);
+	}
+}
+
+/*%
+ * keypair is <string>=<qstring>.  This has implications double quotes
+ * in key names.
+ */
+static void
+lex_keypair(void **state) {
+	isc_buffer_t buf;
+	isc_lex_t *lex = NULL;
+	isc_result_t result;
+	isc_token_t token;
+	size_t i;
+
+	UNUSED(state);
+
+	for (i = 0; i < ARRAY_SIZE(parse_tests); i++) {
+		result = isc_lex_create(test_mctx, 1024, &lex);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		isc_buffer_constinit(&buf, parse_tests[i].text,
+				     strlen(parse_tests[i].text));
+		isc_buffer_add(&buf, strlen(parse_tests[i].text));
+
+		result = isc_lex_openbuffer(lex, &buf);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		result = isc_lex_setsourceline(lex, 100);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		memset(&token, 0, sizeof(token));
+		result = isc_lex_getmastertoken(lex, &token,
+						isc_tokentype_qvpair, true);
+		if (debug) {
+			fprintf(stdout, "# '%s' -> result=%s/%s, type=%d/%d\n",
+				parse_tests[i].text, isc_result_toid(result),
+				isc_result_toid(parse_tests[i].qvpair_result),
+				token.type, parse_tests[i].qvpair_type);
+		}
+
+		assert_int_equal(result, parse_tests[i].qvpair_result);
+		if (result == ISC_R_SUCCESS) {
+			switch (token.type) {
+			case isc_tokentype_string:
+			case isc_tokentype_qstring:
+			case isc_tokentype_vpair:
+			case isc_tokentype_qvpair:
+				if (debug) {
+					fprintf(stdout, "# value='%s'\n",
+						AS_STR(token));
+				}
+				assert_int_equal(token.type,
+						 parse_tests[i].qvpair_type);
+				assert_string_equal(
+					AS_STR(token),
+					parse_tests[i].qvpair_value);
+				break;
+			default:
+				assert_int_equal(token.type,
+						 parse_tests[i].qvpair_type);
+				break;
+			}
+		}
+
+		isc_lex_destroy(&lex);
+	}
+}
+
+int
+main(int argc, char *argv[]) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(lex_0xff),    cmocka_unit_test(lex_keypair),
+		cmocka_unit_test(lex_setline), cmocka_unit_test(lex_string),
+		cmocka_unit_test(lex_qstring),
+	};
+
+	UNUSED(argv);
+
+	if (argc > 1) {
+		debug = true;
+	}
+
+	return (cmocka_run_group_tests(tests, _setup, _teardown));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/md_test.c b/lib/isc/tests/md_test.c
new file mode 100644
index 0000000..83c44c4
--- /dev/null
+++ b/lib/isc/tests/md_test.c
@@ -0,0 +1,587 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <string.h>
+
+/* For FIPS_mode() */
+#include <openssl/crypto.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/buffer.h>
+#include <isc/hex.h>
+#include <isc/md.h>
+#include <isc/region.h>
+#include <isc/result.h>
+
+#include "../md.c"
+
+#define TEST_INPUT(x) (x), sizeof(x) - 1
+
+static int
+_setup(void **state) {
+	isc_md_t *md = isc_md_new();
+	if (md == NULL) {
+		return (-1);
+	}
+	*state = md;
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	if (*state == NULL) {
+		return (-1);
+	}
+	isc_md_free(*state);
+	return (0);
+}
+
+static int
+_reset(void **state) {
+	if (*state == NULL) {
+		return (-1);
+	}
+	if (isc_md_reset(*state) != ISC_R_SUCCESS) {
+		return (-1);
+	}
+	return (0);
+}
+
+static void
+isc_md_new_test(void **state) {
+	UNUSED(state);
+
+	isc_md_t *md = isc_md_new();
+	assert_non_null(md);
+	isc_md_free(md); /* Cleanup */
+}
+
+static void
+isc_md_free_test(void **state) {
+	UNUSED(state);
+
+	isc_md_t *md = isc_md_new();
+	assert_non_null(md);
+	isc_md_free(md);   /* Test freeing valid message digest context */
+	isc_md_free(NULL); /* Test freeing NULL argument */
+}
+
+static void
+isc_md_test(isc_md_t *md, const isc_md_type_t *type, const char *buf,
+	    size_t buflen, const char *result, const int repeats) {
+	assert_non_null(md);
+	assert_int_equal(isc_md_init(md, type), ISC_R_SUCCESS);
+
+	int i;
+
+	for (i = 0; i < repeats; i++) {
+		assert_int_equal(
+			isc_md_update(md, (const unsigned char *)buf, buflen),
+			ISC_R_SUCCESS);
+	}
+
+	unsigned char digest[ISC_MAX_MD_SIZE];
+	unsigned int digestlen;
+	assert_int_equal(isc_md_final(md, digest, &digestlen), ISC_R_SUCCESS);
+
+	char hexdigest[ISC_MAX_MD_SIZE * 2 + 3];
+	isc_region_t r = { .base = digest, .length = digestlen };
+	isc_buffer_t b;
+	isc_buffer_init(&b, hexdigest, sizeof(hexdigest));
+
+	assert_return_code(isc_hex_totext(&r, 0, "", &b), ISC_R_SUCCESS);
+
+	assert_memory_equal(hexdigest, result, (result ? strlen(result) : 0));
+	assert_int_equal(isc_md_reset(md), ISC_R_SUCCESS);
+}
+
+static void
+isc_md_init_test(void **state) {
+	isc_md_t *md = *state;
+	assert_non_null(md);
+
+	expect_assert_failure(isc_md_init(NULL, ISC_MD_MD5));
+
+	assert_int_equal(isc_md_init(md, NULL), ISC_R_NOTIMPLEMENTED);
+
+	assert_int_equal(isc_md_init(md, ISC_MD_MD5), ISC_R_SUCCESS);
+	assert_int_equal(isc_md_reset(md), ISC_R_SUCCESS);
+
+	assert_int_equal(isc_md_init(md, ISC_MD_SHA1), ISC_R_SUCCESS);
+	assert_int_equal(isc_md_reset(md), ISC_R_SUCCESS);
+
+	assert_int_equal(isc_md_init(md, ISC_MD_SHA224), ISC_R_SUCCESS);
+	assert_int_equal(isc_md_reset(md), ISC_R_SUCCESS);
+
+	assert_int_equal(isc_md_init(md, ISC_MD_SHA256), ISC_R_SUCCESS);
+	assert_int_equal(isc_md_reset(md), ISC_R_SUCCESS);
+
+	assert_int_equal(isc_md_init(md, ISC_MD_SHA384), ISC_R_SUCCESS);
+	assert_int_equal(isc_md_reset(md), ISC_R_SUCCESS);
+
+	assert_int_equal(isc_md_init(md, ISC_MD_SHA512), ISC_R_SUCCESS);
+	assert_int_equal(isc_md_reset(md), ISC_R_SUCCESS);
+}
+
+static void
+isc_md_update_test(void **state) {
+	isc_md_t *md = *state;
+	assert_non_null(md);
+
+	/* Uses message digest context initialized in isc_md_init_test() */
+	expect_assert_failure(isc_md_update(NULL, NULL, 0));
+
+	assert_int_equal(isc_md_update(md, NULL, 100), ISC_R_SUCCESS);
+	assert_int_equal(isc_md_update(md, (const unsigned char *)"", 0),
+			 ISC_R_SUCCESS);
+}
+
+static void
+isc_md_reset_test(void **state) {
+	isc_md_t *md = *state;
+#if 0
+	unsigned char digest[ISC_MAX_MD_SIZE] __attribute((unused));
+	unsigned int digestlen __attribute((unused));
+#endif /* if 0 */
+
+	assert_non_null(md);
+
+	assert_int_equal(isc_md_init(md, ISC_MD_SHA512), ISC_R_SUCCESS);
+	assert_int_equal(isc_md_update(md, (const unsigned char *)"a", 1),
+			 ISC_R_SUCCESS);
+	assert_int_equal(isc_md_update(md, (const unsigned char *)"b", 1),
+			 ISC_R_SUCCESS);
+
+	assert_int_equal(isc_md_reset(md), ISC_R_SUCCESS);
+
+#if 0
+	/*
+	 * This test would require OpenSSL compiled with mock_assert(),
+	 * so this could be only manually checked that the test will
+	 * segfault when called by hand
+	 */
+	expect_assert_failure(isc_md_final(md,digest,&digestlen));
+#endif /* if 0 */
+}
+
+static void
+isc_md_final_test(void **state) {
+	isc_md_t *md = *state;
+	assert_non_null(md);
+
+	unsigned char digest[ISC_MAX_MD_SIZE];
+	unsigned int digestlen;
+
+	/* Fail when message digest context is empty */
+	expect_assert_failure(isc_md_final(NULL, digest, &digestlen));
+	/* Fail when output buffer is empty */
+	expect_assert_failure(isc_md_final(md, NULL, &digestlen));
+
+	assert_int_equal(isc_md_init(md, ISC_MD_SHA512), ISC_R_SUCCESS);
+	assert_int_equal(isc_md_final(md, digest, NULL), ISC_R_SUCCESS);
+}
+
+static void
+isc_md_md5_test(void **state) {
+	isc_md_t *md = *state;
+	isc_md_test(md, ISC_MD_MD5, NULL, 0, NULL, 0);
+	isc_md_test(md, ISC_MD_MD5, TEST_INPUT(""),
+		    "D41D8CD98F00B204E9800998ECF8427E", 1);
+	isc_md_test(md, ISC_MD_MD5, TEST_INPUT("a"),
+		    "0CC175B9C0F1B6A831C399E269772661", 1);
+	isc_md_test(md, ISC_MD_MD5, TEST_INPUT("abc"),
+		    "900150983CD24FB0D6963F7D28E17F72", 1);
+	isc_md_test(md, ISC_MD_MD5, TEST_INPUT("message digest"),
+		    "F96B697D7CB7938D525A2F31AAF161D0", 1);
+	isc_md_test(md, ISC_MD_MD5, TEST_INPUT("abcdefghijklmnopqrstuvwxyz"),
+		    "C3FCD3D76192E4007DFB496CCA67E13B", 1);
+	isc_md_test(md, ISC_MD_MD5,
+		    TEST_INPUT("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklm"
+			       "nopqrstuvwxyz0123456789"),
+		    "D174AB98D277D9F5A5611C2C9F419D9F", 1);
+	isc_md_test(md, ISC_MD_MD5,
+		    TEST_INPUT("123456789012345678901234567890123456789"
+			       "01234567890123456789012345678901234567890"),
+		    "57EDF4A22BE3C955AC49DA2E2107B67A", 1);
+}
+
+static void
+isc_md_sha1_test(void **state) {
+	isc_md_t *md = *state;
+	isc_md_test(md, ISC_MD_SHA1, NULL, 0, NULL, 0);
+	isc_md_test(md, ISC_MD_SHA1, TEST_INPUT(""),
+		    "DA39A3EE5E6B4B0D3255BFEF95601890AFD80709", 1);
+	isc_md_test(md, ISC_MD_SHA1, TEST_INPUT("abc"),
+		    "A9993E364706816ABA3E25717850C26C9CD0D89D", 1);
+	isc_md_test(md, ISC_MD_SHA1,
+		    TEST_INPUT("abcdbcdecdefdefgefghfghighijhijkijk"
+			       "ljklmklmnlmnomnopnopq"),
+		    "84983E441C3BD26EBAAE4AA1F95129E5E54670F1", 1);
+	isc_md_test(md, ISC_MD_SHA1, TEST_INPUT("a"),
+		    "34AA973CD4C4DAA4F61EEB2BDBAD27316534016F", 1000000);
+	isc_md_test(md, ISC_MD_SHA1,
+		    TEST_INPUT("01234567012345670123456701234567"),
+		    "DEA356A2CDDD90C7A7ECEDC5EBB563934F460452", 20);
+	isc_md_test(md, ISC_MD_SHA1, TEST_INPUT("\x5e"),
+		    "5E6F80A34A9798CAFC6A5DB96CC57BA4C4DB59C2", 1);
+	isc_md_test(md, ISC_MD_SHA1,
+		    TEST_INPUT("\x9a\x7d\xfd\xf1\xec\xea\xd0\x6e\xd6\x46"
+			       "\xaa\x55\xfe\x75\x71\x46"),
+		    "82ABFF6605DBE1C17DEF12A394FA22A82B544A35", 1);
+	isc_md_test(md, ISC_MD_SHA1,
+		    TEST_INPUT("\xf7\x8f\x92\x14\x1b\xcd\x17\x0a\xe8\x9b"
+			       "\x4f\xba\x15\xa1\xd5\x9f\x3f\xd8\x4d\x22"
+			       "\x3c\x92\x51\xbd\xac\xbb\xae\x61\xd0\x5e"
+			       "\xd1\x15\xa0\x6a\x7c\xe1\x17\xb7\xbe\xea"
+			       "\xd2\x44\x21\xde\xd9\xc3\x25\x92\xbd\x57"
+			       "\xed\xea\xe3\x9c\x39\xfa\x1f\xe8\x94\x6a"
+			       "\x84\xd0\xcf\x1f\x7b\xee\xad\x17\x13\xe2"
+			       "\xe0\x95\x98\x97\x34\x7f\x67\xc8\x0b\x04"
+			       "\x00\xc2\x09\x81\x5d\x6b\x10\xa6\x83\x83"
+			       "\x6f\xd5\x56\x2a\x56\xca\xb1\xa2\x8e\x81"
+			       "\xb6\x57\x66\x54\x63\x1c\xf1\x65\x66\xb8"
+			       "\x6e\x3b\x33\xa1\x08\xb0\x53\x07\xc0\x0a"
+			       "\xff\x14\xa7\x68\xed\x73\x50\x60\x6a\x0f"
+			       "\x85\xe6\xa9\x1d\x39\x6f\x5b\x5c\xbe\x57"
+			       "\x7f\x9b\x38\x80\x7c\x7d\x52\x3d\x6d\x79"
+			       "\x2f\x6e\xbc\x24\xa4\xec\xf2\xb3\xa4\x27"
+			       "\xcd\xbb\xfb"),
+		    "CB0082C8F197D260991BA6A460E76E202BAD27B3", 1);
+}
+
+static void
+isc_md_sha224_test(void **state) {
+	isc_md_t *md = *state;
+
+	isc_md_test(md, ISC_MD_SHA224, NULL, 0, NULL, 0);
+	isc_md_test(md, ISC_MD_SHA224, TEST_INPUT(""),
+		    "D14A028C2A3A2BC9476102BB288234C415A2B01F828EA62AC5B3E42F",
+		    1);
+	isc_md_test(md, ISC_MD_SHA224, TEST_INPUT("abc"),
+		    "23097D223405D8228642A477BDA255B32AADBCE4BDA0B3F7"
+		    "E36C9DA7",
+		    1);
+	isc_md_test(md, ISC_MD_SHA224,
+		    TEST_INPUT("abcdbcdecdefdefgefghfghighijhijkijklj"
+			       "klmklmnlmnomnopnopq"),
+		    "75388B16512776CC5DBA5DA1FD890150B0C6455CB4F58B"
+		    "1952522525",
+		    1);
+	isc_md_test(md, ISC_MD_SHA224, TEST_INPUT("a"),
+		    "20794655980C91D8BBB4C1EA97618A4BF03F42581948B2"
+		    "EE4EE7AD67",
+		    1000000);
+	isc_md_test(md, ISC_MD_SHA224,
+		    TEST_INPUT("01234567012345670123456701234567"),
+		    "567F69F168CD7844E65259CE658FE7AADFA25216E68ECA"
+		    "0EB7AB8262",
+		    20);
+	isc_md_test(md, ISC_MD_SHA224, TEST_INPUT("\x07"),
+		    "00ECD5F138422B8AD74C9799FD826C531BAD2FCABC7450"
+		    "BEE2AA8C2A",
+		    1);
+	isc_md_test(md, ISC_MD_SHA224,
+		    TEST_INPUT("\x18\x80\x40\x05\xdd\x4f\xbd\x15\x56\x29"
+			       "\x9d\x6f\x9d\x93\xdf\x62"),
+		    "DF90D78AA78821C99B40BA4C966921ACCD8FFB1E98AC38"
+		    "8E56191DB1",
+		    1);
+	isc_md_test(md, ISC_MD_SHA224,
+		    TEST_INPUT("\x55\xb2\x10\x07\x9c\x61\xb5\x3a\xdd\x52"
+			       "\x06\x22\xd1\xac\x97\xd5\xcd\xbe\x8c\xb3"
+			       "\x3a\xa0\xae\x34\x45\x17\xbe\xe4\xd7\xba"
+			       "\x09\xab\xc8\x53\x3c\x52\x50\x88\x7a\x43"
+			       "\xbe\xbb\xac\x90\x6c\x2e\x18\x37\xf2\x6b"
+			       "\x36\xa5\x9a\xe3\xbe\x78\x14\xd5\x06\x89"
+			       "\x6b\x71\x8b\x2a\x38\x3e\xcd\xac\x16\xb9"
+			       "\x61\x25\x55\x3f\x41\x6f\xf3\x2c\x66\x74"
+			       "\xc7\x45\x99\xa9\x00\x53\x86\xd9\xce\x11"
+			       "\x12\x24\x5f\x48\xee\x47\x0d\x39\x6c\x1e"
+			       "\xd6\x3b\x92\x67\x0c\xa5\x6e\xc8\x4d\xee"
+			       "\xa8\x14\xb6\x13\x5e\xca\x54\x39\x2b\xde"
+			       "\xdb\x94\x89\xbc\x9b\x87\x5a\x8b\xaf\x0d"
+			       "\xc1\xae\x78\x57\x36\x91\x4a\xb7\xda\xa2"
+			       "\x64\xbc\x07\x9d\x26\x9f\x2c\x0d\x7e\xdd"
+			       "\xd8\x10\xa4\x26\x14\x5a\x07\x76\xf6\x7c"
+			       "\x87\x82\x73"),
+		    "0B31894EC8937AD9B91BDFBCBA294D9ADEFAA18E09305E"
+		    "9F20D5C3A4",
+		    1);
+}
+
+static void
+isc_md_sha256_test(void **state) {
+	isc_md_t *md = *state;
+
+	isc_md_test(md, ISC_MD_SHA256, NULL, 0, NULL, 0);
+	isc_md_test(md, ISC_MD_SHA256, TEST_INPUT(""),
+		    "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B93"
+		    "4CA495991B7852B855",
+		    1);
+
+	isc_md_test(md, ISC_MD_SHA256, TEST_INPUT("abc"),
+		    "BA7816BF8F01CFEA414140DE5DAE2223B00361A396177A"
+		    "9CB410FF61F20015AD",
+		    1);
+	isc_md_test(md, ISC_MD_SHA256,
+		    TEST_INPUT("abcdbcdecdefdefgefghfghighijhijkijkljk"
+			       "lmklmnlmnomnopnopq"),
+		    "248D6A61D20638B8E5C026930C3E6039A33CE45964FF21"
+		    "67F6ECEDD419DB06C1",
+		    1);
+	isc_md_test(md, ISC_MD_SHA256, TEST_INPUT("a"),
+		    "CDC76E5C9914FB9281A1C7E284D73E67F1809A48A49720"
+		    "0E046D39CCC7112CD0",
+		    1000000);
+	isc_md_test(md, ISC_MD_SHA256,
+		    TEST_INPUT("01234567012345670123456701234567"),
+		    "594847328451BDFA85056225462CC1D867D877FB388DF0"
+		    "CE35F25AB5562BFBB5",
+		    20);
+	isc_md_test(md, ISC_MD_SHA256, TEST_INPUT("\x19"),
+		    "68AA2E2EE5DFF96E3355E6C7EE373E3D6A4E17F75F9518"
+		    "D843709C0C9BC3E3D4",
+		    1);
+	isc_md_test(md, ISC_MD_SHA256,
+		    TEST_INPUT("\xe3\xd7\x25\x70\xdc\xdd\x78\x7c\xe3"
+			       "\x88\x7a\xb2\xcd\x68\x46\x52"),
+		    "175EE69B02BA9B58E2B0A5FD13819CEA573F3940A94F82"
+		    "5128CF4209BEABB4E8",
+		    1);
+	isc_md_test(md, ISC_MD_SHA256,
+		    TEST_INPUT("\x83\x26\x75\x4e\x22\x77\x37\x2f\x4f\xc1"
+			       "\x2b\x20\x52\x7a\xfe\xf0\x4d\x8a\x05\x69"
+			       "\x71\xb1\x1a\xd5\x71\x23\xa7\xc1\x37\x76"
+			       "\x00\x00\xd7\xbe\xf6\xf3\xc1\xf7\xa9\x08"
+			       "\x3a\xa3\x9d\x81\x0d\xb3\x10\x77\x7d\xab"
+			       "\x8b\x1e\x7f\x02\xb8\x4a\x26\xc7\x73\x32"
+			       "\x5f\x8b\x23\x74\xde\x7a\x4b\x5a\x58\xcb"
+			       "\x5c\x5c\xf3\x5b\xce\xe6\xfb\x94\x6e\x5b"
+			       "\xd6\x94\xfa\x59\x3a\x8b\xeb\x3f\x9d\x65"
+			       "\x92\xec\xed\xaa\x66\xca\x82\xa2\x9d\x0c"
+			       "\x51\xbc\xf9\x33\x62\x30\xe5\xd7\x84\xe4"
+			       "\xc0\xa4\x3f\x8d\x79\xa3\x0a\x16\x5c\xba"
+			       "\xbe\x45\x2b\x77\x4b\x9c\x71\x09\xa9\x7d"
+			       "\x13\x8f\x12\x92\x28\x96\x6f\x6c\x0a\xdc"
+			       "\x10\x6a\xad\x5a\x9f\xdd\x30\x82\x57\x69"
+			       "\xb2\xc6\x71\xaf\x67\x59\xdf\x28\xeb\x39"
+			       "\x3d\x54\xd6"),
+		    "97DBCA7DF46D62C8A422C941DD7E835B8AD3361763F7E9"
+		    "B2D95F4F0DA6E1CCBC",
+		    1);
+}
+
+static void
+isc_md_sha384_test(void **state) {
+	isc_md_t *md = *state;
+
+	isc_md_test(md, ISC_MD_SHA384, NULL, 0, NULL, 0);
+	isc_md_test(md, ISC_MD_SHA384, TEST_INPUT(""),
+		    "38B060A751AC96384CD9327EB1B1E36A21FDB71114BE07"
+		    "434C0CC7BF63F6E1DA274EDEBFE76F65FBD51AD2F14898"
+		    "B95B"
+		    "",
+		    1);
+	isc_md_test(md, ISC_MD_SHA384, TEST_INPUT("abc"),
+		    "CB00753F45A35E8BB5A03D699AC65007272C32AB0EDED1"
+		    "631A8B605A43FF5BED8086072BA1E7CC2358BAEC"
+		    "A134C825A7",
+		    1);
+	isc_md_test(md, ISC_MD_SHA384,
+		    TEST_INPUT("abcdefghbcdefghicdefghijdefghijkefghijkl"
+			       "fghijklmghijklmnhijklmnoijklmnopjklmnopq"
+			       "klmnopqrlmnopqrsmnopqrstnopqrstu"),
+		    "09330C33F71147E83D192FC782CD1B4753111B173B3B05"
+		    "D22FA08086E3B0F712FCC7C71A557E2DB966C3E9"
+		    "FA91746039",
+		    1);
+	isc_md_test(md, ISC_MD_SHA384, TEST_INPUT("a"),
+		    "9D0E1809716474CB086E834E310A4A1CED149E9C00F248"
+		    "527972CEC5704C2A5B07B8B3DC38ECC4EBAE97DD"
+		    "D87F3D8985",
+		    1000000);
+	isc_md_test(md, ISC_MD_SHA384,
+		    TEST_INPUT("01234567012345670123456701234567"),
+		    "2FC64A4F500DDB6828F6A3430B8DD72A368EB7F3A8322A"
+		    "70BC84275B9C0B3AB00D27A5CC3C2D224AA6B61A"
+		    "0D79FB4596",
+		    20);
+	isc_md_test(md, ISC_MD_SHA384, TEST_INPUT("\xb9"),
+		    "BC8089A19007C0B14195F4ECC74094FEC64F01F9092928"
+		    "2C2FB392881578208AD466828B1C6C283D2722CF"
+		    "0AD1AB6938",
+		    1);
+	isc_md_test(md, ISC_MD_SHA384,
+		    TEST_INPUT("\xa4\x1c\x49\x77\x79\xc0\x37\x5f\xf1"
+			       "\x0a\x7f\x4e\x08\x59\x17\x39"),
+		    "C9A68443A005812256B8EC76B00516F0DBB74FAB26D665"
+		    "913F194B6FFB0E91EA9967566B58109CBC675CC2"
+		    "08E4C823F7",
+		    1);
+	isc_md_test(md, ISC_MD_SHA384,
+		    TEST_INPUT("\x39\x96\x69\xe2\x8f\x6b\x9c\x6d\xbc\xbb"
+			       "\x69\x12\xec\x10\xff\xcf\x74\x79\x03\x49"
+			       "\xb7\xdc\x8f\xbe\x4a\x8e\x7b\x3b\x56\x21"
+			       "\xdb\x0f\x3e\x7d\xc8\x7f\x82\x32\x64\xbb"
+			       "\xe4\x0d\x18\x11\xc9\xea\x20\x61\xe1\xc8"
+			       "\x4a\xd1\x0a\x23\xfa\xc1\x72\x7e\x72\x02"
+			       "\xfc\x3f\x50\x42\xe6\xbf\x58\xcb\xa8\xa2"
+			       "\x74\x6e\x1f\x64\xf9\xb9\xea\x35\x2c\x71"
+			       "\x15\x07\x05\x3c\xf4\xe5\x33\x9d\x52\x86"
+			       "\x5f\x25\xcc\x22\xb5\xe8\x77\x84\xa1\x2f"
+			       "\xc9\x61\xd6\x6c\xb6\xe8\x95\x73\x19\x9a"
+			       "\x2c\xe6\x56\x5c\xbd\xf1\x3d\xca\x40\x38"
+			       "\x32\xcf\xcb\x0e\x8b\x72\x11\xe8\x3a\xf3"
+			       "\x2a\x11\xac\x17\x92\x9f\xf1\xc0\x73\xa5"
+			       "\x1c\xc0\x27\xaa\xed\xef\xf8\x5a\xad\x7c"
+			       "\x2b\x7c\x5a\x80\x3e\x24\x04\xd9\x6d\x2a"
+			       "\x77\x35\x7b\xda\x1a\x6d\xae\xed\x17\x15"
+			       "\x1c\xb9\xbc\x51\x25\xa4\x22\xe9\x41\xde"
+			       "\x0c\xa0\xfc\x50\x11\xc2\x3e\xcf\xfe\xfd"
+			       "\xd0\x96\x76\x71\x1c\xf3\xdb\x0a\x34\x40"
+			       "\x72\x0e\x16\x15\xc1\xf2\x2f\xbc\x3c\x72"
+			       "\x1d\xe5\x21\xe1\xb9\x9b\xa1\xbd\x55\x77"
+			       "\x40\x86\x42\x14\x7e\xd0\x96"),
+		    "4F440DB1E6EDD2899FA335F09515AA025EE177A79F4B4A"
+		    "AF38E42B5C4DE660F5DE8FB2A5B2FBD2A3CBFFD2"
+		    "0CFF1288C0",
+		    1);
+}
+
+static void
+isc_md_sha512_test(void **state) {
+	isc_md_t *md = *state;
+
+	isc_md_test(md, ISC_MD_SHA512, NULL, 0, NULL, 0);
+	isc_md_test(md, ISC_MD_SHA512, TEST_INPUT(""),
+		    "CF83E1357EEFB8BDF1542850D66D8007D620E4050B5715"
+		    "DC83F4A921D36CE9CE47D0D13C5D85F2B0FF8318D2877E"
+		    "EC2F63B931BD47417A81A538327AF927DA3E",
+		    1);
+	isc_md_test(md, ISC_MD_SHA512, TEST_INPUT("abc"),
+		    "DDAF35A193617ABACC417349AE20413112E6FA4E89A97E"
+		    "A20A9EEEE64B55D39A2192992A274FC1A836BA3C"
+		    "23A3FEEBBD454D4423643CE80E2A9AC94FA54CA49F",
+		    1);
+	isc_md_test(md, ISC_MD_SHA512,
+		    TEST_INPUT("abcdefghbcdefghicdefghijdefghijkefghijkl"
+			       "fghijklmghijklmnhijklmnoijklmnopjklmnopq"
+			       "klmnopqrlmnopqrsmnopqrstnopqrstu"),
+		    "8E959B75DAE313DA8CF4F72814FC143F8F7779C6EB9F7F"
+		    "A17299AEADB6889018501D289E4900F7E4331B99"
+		    "DEC4B5433AC7D329EEB6DD26545E96E55B874BE909",
+		    1);
+	isc_md_test(md, ISC_MD_SHA512, TEST_INPUT("a"),
+		    "E718483D0CE769644E2E42C7BC15B4638E1F98B13B2044"
+		    "285632A803AFA973EBDE0FF244877EA60A4CB043"
+		    "2CE577C31BEB009C5C2C49AA2E4EADB217AD8CC09B",
+		    1000000);
+	isc_md_test(md, ISC_MD_SHA512,
+		    TEST_INPUT("01234567012345670123456701234567"),
+		    "89D05BA632C699C31231DED4FFC127D5A894DAD412C0E0"
+		    "24DB872D1ABD2BA8141A0F85072A9BE1E2AA04CF"
+		    "33C765CB510813A39CD5A84C4ACAA64D3F3FB7BAE9",
+		    20);
+	isc_md_test(md, ISC_MD_SHA512, TEST_INPUT("\xD0"),
+		    "9992202938E882E73E20F6B69E68A0A7149090423D93C8"
+		    "1BAB3F21678D4ACEEEE50E4E8CAFADA4C85A54EA"
+		    "8306826C4AD6E74CECE9631BFA8A549B4AB3FBBA15",
+		    1);
+	isc_md_test(md, ISC_MD_SHA512,
+		    TEST_INPUT("\x8d\x4e\x3c\x0e\x38\x89\x19\x14\x91\x81"
+			       "\x6e\x9d\x98\xbf\xf0\xa0"),
+		    "CB0B67A4B8712CD73C9AABC0B199E9269B20844AFB75AC"
+		    "BDD1C153C9828924C3DDEDAAFE669C5FDD0BC66F"
+		    "630F6773988213EB1B16F517AD0DE4B2F0C95C90F8",
+		    1);
+	isc_md_test(md, ISC_MD_SHA512,
+		    TEST_INPUT("\xa5\x5f\x20\xc4\x11\xaa\xd1\x32\x80\x7a"
+			       "\x50\x2d\x65\x82\x4e\x31\xa2\x30\x54\x32"
+			       "\xaa\x3d\x06\xd3\xe2\x82\xa8\xd8\x4e\x0d"
+			       "\xe1\xde\x69\x74\xbf\x49\x54\x69\xfc\x7f"
+			       "\x33\x8f\x80\x54\xd5\x8c\x26\xc4\x93\x60"
+			       "\xc3\xe8\x7a\xf5\x65\x23\xac\xf6\xd8\x9d"
+			       "\x03\xe5\x6f\xf2\xf8\x68\x00\x2b\xc3\xe4"
+			       "\x31\xed\xc4\x4d\xf2\xf0\x22\x3d\x4b\xb3"
+			       "\xb2\x43\x58\x6e\x1a\x7d\x92\x49\x36\x69"
+			       "\x4f\xcb\xba\xf8\x8d\x95\x19\xe4\xeb\x50"
+			       "\xa6\x44\xf8\xe4\xf9\x5e\xb0\xea\x95\xbc"
+			       "\x44\x65\xc8\x82\x1a\xac\xd2\xfe\x15\xab"
+			       "\x49\x81\x16\x4b\xbb\x6d\xc3\x2f\x96\x90"
+			       "\x87\xa1\x45\xb0\xd9\xcc\x9c\x67\xc2\x2b"
+			       "\x76\x32\x99\x41\x9c\xc4\x12\x8b\xe9\xa0"
+			       "\x77\xb3\xac\xe6\x34\x06\x4e\x6d\x99\x28"
+			       "\x35\x13\xdc\x06\xe7\x51\x5d\x0d\x73\x13"
+			       "\x2e\x9a\x0d\xc6\xd3\xb1\xf8\xb2\x46\xf1"
+			       "\xa9\x8a\x3f\xc7\x29\x41\xb1\xe3\xbb\x20"
+			       "\x98\xe8\xbf\x16\xf2\x68\xd6\x4f\x0b\x0f"
+			       "\x47\x07\xfe\x1e\xa1\xa1\x79\x1b\xa2\xf3"
+			       "\xc0\xc7\x58\xe5\xf5\x51\x86\x3a\x96\xc9"
+			       "\x49\xad\x47\xd7\xfb\x40\xd2"),
+		    "C665BEFB36DA189D78822D10528CBF3B12B3EEF7260399"
+		    "09C1A16A270D48719377966B957A878E72058477"
+		    "9A62825C18DA26415E49A7176A894E7510FD1451F5",
+		    1);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		/* isc_md_new() */
+		cmocka_unit_test(isc_md_new_test),
+
+		/* isc_md_init() */
+		cmocka_unit_test_setup_teardown(isc_md_init_test, _reset,
+						_reset),
+
+		/* isc_md_reset() */
+		cmocka_unit_test_setup_teardown(isc_md_reset_test, _reset,
+						_reset),
+
+		/* isc_md_init() -> isc_md_update() -> isc_md_final() */
+		cmocka_unit_test(isc_md_md5_test),
+		cmocka_unit_test(isc_md_sha1_test),
+		cmocka_unit_test(isc_md_sha224_test),
+		cmocka_unit_test(isc_md_sha256_test),
+		cmocka_unit_test(isc_md_sha384_test),
+		cmocka_unit_test(isc_md_sha512_test),
+
+		cmocka_unit_test_setup_teardown(isc_md_update_test, _reset,
+						_reset),
+		cmocka_unit_test_setup_teardown(isc_md_final_test, _reset,
+						_reset),
+
+		cmocka_unit_test(isc_md_free_test),
+	};
+
+	return (cmocka_run_group_tests(tests, _setup, _teardown));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/mem_test.c b/lib/isc/tests/mem_test.c
new file mode 100644
index 0000000..9b180cd
--- /dev/null
+++ b/lib/isc/tests/mem_test.c
@@ -0,0 +1,477 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <fcntl.h>
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/file.h>
+#include <isc/mem.h>
+#include <isc/mutex.h>
+#include <isc/os.h>
+#include <isc/print.h>
+#include <isc/result.h>
+#include <isc/stdio.h>
+#include <isc/thread.h>
+#include <isc/time.h>
+#include <isc/util.h>
+
+#include "../mem_p.h"
+#include "isctest.h"
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+#define MP1_FREEMAX  10
+#define MP1_FILLCNT  10
+#define MP1_MAXALLOC 30
+
+#define MP2_FREEMAX 25
+#define MP2_FILLCNT 25
+
+/* general memory system tests */
+static void
+isc_mem_test(void **state) {
+	void *items1[50];
+	void *items2[50];
+	void *tmp;
+	isc_mempool_t *mp1 = NULL, *mp2 = NULL;
+	unsigned int i, j;
+	int rval;
+
+	UNUSED(state);
+
+	isc_mempool_create(test_mctx, 24, &mp1);
+	isc_mempool_create(test_mctx, 31, &mp2);
+
+	isc_mempool_setfreemax(mp1, MP1_FREEMAX);
+	isc_mempool_setfillcount(mp1, MP1_FILLCNT);
+	isc_mempool_setmaxalloc(mp1, MP1_MAXALLOC);
+
+	/*
+	 * Allocate MP1_MAXALLOC items from the pool.  This is our max.
+	 */
+	for (i = 0; i < MP1_MAXALLOC; i++) {
+		items1[i] = isc_mempool_get(mp1);
+		assert_non_null(items1[i]);
+	}
+
+	/*
+	 * Try to allocate one more.  This should fail.
+	 */
+	tmp = isc_mempool_get(mp1);
+	assert_null(tmp);
+
+	/*
+	 * Free the first 11 items.  Verify that there are 10 free items on
+	 * the free list (which is our max).
+	 */
+	for (i = 0; i < 11; i++) {
+		isc_mempool_put(mp1, items1[i]);
+		items1[i] = NULL;
+	}
+
+#if !__SANITIZE_ADDRESS__
+	rval = isc_mempool_getfreecount(mp1);
+	assert_int_equal(rval, 10);
+#endif /* !__SANITIZE_ADDRESS__ */
+
+	rval = isc_mempool_getallocated(mp1);
+	assert_int_equal(rval, 19);
+
+	/*
+	 * Now, beat up on mp2 for a while.  Allocate 50 items, then free
+	 * them, then allocate 50 more, etc.
+	 */
+
+	isc_mempool_setfreemax(mp2, 25);
+	isc_mempool_setfillcount(mp2, 25);
+
+	for (j = 0; j < 500000; j++) {
+		for (i = 0; i < 50; i++) {
+			items2[i] = isc_mempool_get(mp2);
+			assert_non_null(items2[i]);
+		}
+		for (i = 0; i < 50; i++) {
+			isc_mempool_put(mp2, items2[i]);
+			items2[i] = NULL;
+		}
+	}
+
+	/*
+	 * Free all the other items and blow away this pool.
+	 */
+	for (i = 11; i < MP1_MAXALLOC; i++) {
+		isc_mempool_put(mp1, items1[i]);
+		items1[i] = NULL;
+	}
+
+	isc_mempool_destroy(&mp1);
+	isc_mempool_destroy(&mp2);
+
+	isc_mempool_create(test_mctx, 2, &mp1);
+
+	tmp = isc_mempool_get(mp1);
+	assert_non_null(tmp);
+
+	isc_mempool_put(mp1, tmp);
+
+	isc_mempool_destroy(&mp1);
+}
+
+/* test TotalUse calculation */
+static void
+isc_mem_total_test(void **state) {
+	isc_mem_t *mctx2 = NULL;
+	size_t before, after;
+	ssize_t diff;
+	int i;
+
+	UNUSED(state);
+
+	/* Local alloc, free */
+	mctx2 = NULL;
+	isc_mem_create(&mctx2);
+
+	before = isc_mem_total(mctx2);
+
+	for (i = 0; i < 100000; i++) {
+		void *ptr;
+
+		ptr = isc_mem_allocate(mctx2, 2048);
+		isc_mem_free(mctx2, ptr);
+	}
+
+	after = isc_mem_total(mctx2);
+	diff = after - before;
+
+	/* 2048 +8 bytes extra for size_info */
+	assert_int_equal(diff, (2048 + 8) * 100000);
+
+	/* ISC_MEMFLAG_INTERNAL */
+
+	before = isc_mem_total(test_mctx);
+
+	for (i = 0; i < 100000; i++) {
+		void *ptr;
+
+		ptr = isc_mem_allocate(test_mctx, 2048);
+		isc_mem_free(test_mctx, ptr);
+	}
+
+	after = isc_mem_total(test_mctx);
+	diff = after - before;
+
+	/* 2048 +8 bytes extra for size_info */
+	assert_int_equal(diff, (2048 + 8) * 100000);
+
+	isc_mem_destroy(&mctx2);
+}
+
+/* test InUse calculation */
+static void
+isc_mem_inuse_test(void **state) {
+	isc_mem_t *mctx2 = NULL;
+	size_t before, after;
+	ssize_t diff;
+	void *ptr;
+
+	UNUSED(state);
+
+	mctx2 = NULL;
+	isc_mem_create(&mctx2);
+
+	before = isc_mem_inuse(mctx2);
+	ptr = isc_mem_allocate(mctx2, 1024000);
+	isc_mem_free(mctx2, ptr);
+	after = isc_mem_inuse(mctx2);
+
+	diff = after - before;
+
+	assert_int_equal(diff, 0);
+
+	isc_mem_destroy(&mctx2);
+}
+
+#if ISC_MEM_TRACKLINES
+
+/* test mem with no flags */
+static void
+isc_mem_noflags_test(void **state) {
+	isc_result_t result;
+	isc_mem_t *mctx2 = NULL;
+	char buf[4096], *p, *q;
+	FILE *f;
+	void *ptr;
+
+	result = isc_stdio_open("mem.output", "w", &f);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	UNUSED(state);
+
+	isc_mem_create(&mctx2);
+	isc_mem_debugging = 0;
+	ptr = isc_mem_get(mctx2, 2048);
+	assert_non_null(ptr);
+	isc__mem_printactive(mctx2, f);
+	isc_mem_put(mctx2, ptr, 2048);
+	isc_mem_destroy(&mctx2);
+	isc_stdio_close(f);
+
+	memset(buf, 0, sizeof(buf));
+	result = isc_stdio_open("mem.output", "r", &f);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_stdio_read(buf, sizeof(buf), 1, f, NULL);
+	assert_int_equal(result, ISC_R_EOF);
+	isc_stdio_close(f);
+	isc_file_remove("mem.output");
+
+	buf[sizeof(buf) - 1] = 0;
+
+	p = strchr(buf, '\n');
+	assert_non_null(p);
+	assert_in_range(p, 0, buf + sizeof(buf) - 3);
+	p += 2;
+	q = strchr(p, '\n');
+	assert_non_null(q);
+	*q = '\0';
+	assert_string_equal(p, "None.");
+
+	isc_mem_debugging = ISC_MEM_DEBUGRECORD;
+}
+
+/* test mem with record flag */
+static void
+isc_mem_recordflag_test(void **state) {
+	isc_result_t result;
+	isc_mem_t *mctx2 = NULL;
+	char buf[4096], *p;
+	FILE *f;
+	void *ptr;
+
+	result = isc_stdio_open("mem.output", "w", &f);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	UNUSED(state);
+
+	isc_mem_create(&mctx2);
+	ptr = isc_mem_get(mctx2, 2048);
+	assert_non_null(ptr);
+	isc__mem_printactive(mctx2, f);
+	isc_mem_put(mctx2, ptr, 2048);
+	isc_mem_destroy(&mctx2);
+	isc_stdio_close(f);
+
+	memset(buf, 0, sizeof(buf));
+	result = isc_stdio_open("mem.output", "r", &f);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_stdio_read(buf, sizeof(buf), 1, f, NULL);
+	assert_int_equal(result, ISC_R_EOF);
+	isc_stdio_close(f);
+	isc_file_remove("mem.output");
+
+	buf[sizeof(buf) - 1] = 0;
+
+	p = strchr(buf, '\n');
+	assert_non_null(p);
+	assert_in_range(p, 0, buf + sizeof(buf) - 3);
+	assert_memory_equal(p + 2, "ptr ", 4);
+	p = strchr(p + 1, '\n');
+	assert_non_null(p);
+	assert_int_equal(strlen(p), 1);
+}
+
+/* test mem with trace flag */
+static void
+isc_mem_traceflag_test(void **state) {
+	isc_result_t result;
+	isc_mem_t *mctx2 = NULL;
+	char buf[4096], *p;
+	FILE *f;
+	void *ptr;
+
+	/* redirect stderr so we can check trace output */
+	f = freopen("mem.output", "w", stderr);
+	assert_non_null(f);
+
+	UNUSED(state);
+
+	isc_mem_create(&mctx2);
+	isc_mem_debugging = ISC_MEM_DEBUGTRACE;
+	ptr = isc_mem_get(mctx2, 2048);
+	assert_non_null(ptr);
+	isc__mem_printactive(mctx2, f);
+	isc_mem_put(mctx2, ptr, 2048);
+	isc_mem_destroy(&mctx2);
+	isc_stdio_close(f);
+
+	memset(buf, 0, sizeof(buf));
+	result = isc_stdio_open("mem.output", "r", &f);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_stdio_read(buf, sizeof(buf), 1, f, NULL);
+	assert_int_equal(result, ISC_R_EOF);
+	isc_stdio_close(f);
+	isc_file_remove("mem.output");
+
+	/* return stderr to TTY so we can see errors */
+	f = freopen("/dev/tty", "w", stderr);
+
+	buf[sizeof(buf) - 1] = 0;
+
+	assert_memory_equal(buf, "add ", 4);
+	p = strchr(buf, '\n');
+	assert_non_null(p);
+	p = strchr(p + 1, '\n');
+	assert_non_null(p);
+	assert_in_range(p, 0, buf + sizeof(buf) - 3);
+	assert_memory_equal(p + 2, "ptr ", 4);
+	p = strchr(p + 1, '\n');
+	assert_non_null(p);
+	assert_memory_equal(p + 1, "del ", 4);
+
+	isc_mem_debugging = ISC_MEM_DEBUGRECORD;
+}
+#endif /* if ISC_MEM_TRACKLINES */
+
+#if !defined(__SANITIZE_THREAD__)
+
+#define ITERS	  512
+#define NUM_ITEMS 1024 /* 768 */
+#define ITEM_SIZE 65534
+
+static isc_threadresult_t
+mem_thread(isc_threadarg_t arg) {
+	void *items[NUM_ITEMS];
+	size_t size = *((size_t *)arg);
+
+	for (int i = 0; i < ITERS; i++) {
+		for (int j = 0; j < NUM_ITEMS; j++) {
+			items[j] = isc_mem_get(test_mctx, size);
+		}
+		for (int j = 0; j < NUM_ITEMS; j++) {
+			isc_mem_put(test_mctx, items[j], size);
+		}
+	}
+
+	return ((isc_threadresult_t)0);
+}
+
+static void
+isc_mem_benchmark(void **state) {
+	int nthreads = ISC_MAX(ISC_MIN(isc_os_ncpus(), 32), 1);
+	isc_thread_t threads[32];
+	isc_time_t ts1, ts2;
+	double t;
+	isc_result_t result;
+	size_t size = ITEM_SIZE;
+
+	UNUSED(state);
+
+	result = isc_time_now(&ts1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	for (int i = 0; i < nthreads; i++) {
+		isc_thread_create(mem_thread, &size, &threads[i]);
+		size = size / 2;
+	}
+	for (int i = 0; i < nthreads; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	result = isc_time_now(&ts2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	t = isc_time_microdiff(&ts2, &ts1);
+
+	printf("[ TIME     ] isc_mem_benchmark: "
+	       "%d isc_mem_{get,put} calls, %f seconds, %f calls/second\n",
+	       nthreads * ITERS * NUM_ITEMS, t / 1000000.0,
+	       (nthreads * ITERS * NUM_ITEMS) / (t / 1000000.0));
+}
+
+#endif /* __SANITIZE_THREAD */
+
+/*
+ * Main
+ */
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test_setup_teardown(isc_mem_test, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(isc_mem_total_test, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(isc_mem_inuse_test, _setup,
+						_teardown),
+
+#if !defined(__SANITIZE_THREAD__)
+		cmocka_unit_test_setup_teardown(isc_mem_benchmark, _setup,
+						_teardown),
+#endif /* __SANITIZE_THREAD__ */
+#if ISC_MEM_TRACKLINES
+		cmocka_unit_test_setup_teardown(isc_mem_noflags_test, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(isc_mem_recordflag_test, _setup,
+						_teardown),
+		/*
+		 * traceflag_test closes stderr, which causes weird
+		 * side effects for any next test trying to use libuv.
+		 * This test has to be the last one to avoid problems.
+		 */
+		cmocka_unit_test_setup_teardown(isc_mem_traceflag_test, _setup,
+						_teardown),
+#endif /* if ISC_MEM_TRACKLINES */
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/netaddr_test.c b/lib/isc/tests/netaddr_test.c
new file mode 100644
index 0000000..473e747
--- /dev/null
+++ b/lib/isc/tests/netaddr_test.c
@@ -0,0 +1,159 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/netaddr.h>
+#include <isc/sockaddr.h>
+#include <isc/util.h>
+
+/* test isc_netaddr_isnetzero() */
+static void
+netaddr_isnetzero(void **state) {
+	unsigned int i;
+	struct in_addr ina;
+	struct {
+		const char *address;
+		bool expect;
+	} tests[] = { { "0.0.0.0", true },    { "0.0.0.1", true },
+		      { "0.0.1.2", true },    { "0.1.2.3", true },
+		      { "10.0.0.0", false },  { "10.9.0.0", false },
+		      { "10.9.8.0", false },  { "10.9.8.7", false },
+		      { "127.0.0.0", false }, { "127.0.0.1", false } };
+	bool result;
+	isc_netaddr_t netaddr;
+
+	UNUSED(state);
+
+	for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) {
+		ina.s_addr = inet_addr(tests[i].address);
+		isc_netaddr_fromin(&netaddr, &ina);
+		result = isc_netaddr_isnetzero(&netaddr);
+		assert_int_equal(result, tests[i].expect);
+	}
+}
+
+/* test isc_netaddr_masktoprefixlen() calculates correct prefix lengths */
+static void
+netaddr_masktoprefixlen(void **state) {
+	struct in_addr na_a;
+	struct in_addr na_b;
+	struct in_addr na_c;
+	struct in_addr na_d;
+	isc_netaddr_t ina_a;
+	isc_netaddr_t ina_b;
+	isc_netaddr_t ina_c;
+	isc_netaddr_t ina_d;
+	unsigned int plen;
+
+	UNUSED(state);
+
+	assert_true(inet_pton(AF_INET, "0.0.0.0", &na_a) >= 0);
+	assert_true(inet_pton(AF_INET, "255.255.255.254", &na_b) >= 0);
+	assert_true(inet_pton(AF_INET, "255.255.255.255", &na_c) >= 0);
+	assert_true(inet_pton(AF_INET, "255.255.255.0", &na_d) >= 0);
+
+	isc_netaddr_fromin(&ina_a, &na_a);
+	isc_netaddr_fromin(&ina_b, &na_b);
+	isc_netaddr_fromin(&ina_c, &na_c);
+	isc_netaddr_fromin(&ina_d, &na_d);
+
+	assert_int_equal(isc_netaddr_masktoprefixlen(&ina_a, &plen),
+			 ISC_R_SUCCESS);
+	assert_int_equal(plen, 0);
+
+	assert_int_equal(isc_netaddr_masktoprefixlen(&ina_b, &plen),
+			 ISC_R_SUCCESS);
+	assert_int_equal(plen, 31);
+
+	assert_int_equal(isc_netaddr_masktoprefixlen(&ina_c, &plen),
+			 ISC_R_SUCCESS);
+	assert_int_equal(plen, 32);
+
+	assert_int_equal(isc_netaddr_masktoprefixlen(&ina_d, &plen),
+			 ISC_R_SUCCESS);
+	assert_int_equal(plen, 24);
+}
+
+/* check multicast addresses are detected properly */
+static void
+netaddr_multicast(void **state) {
+	unsigned int i;
+	struct {
+		int family;
+		const char *addr;
+		bool is_multicast;
+	} tests[] = {
+		{ AF_INET, "1.2.3.4", false },	{ AF_INET, "4.3.2.1", false },
+		{ AF_INET, "224.1.1.1", true }, { AF_INET, "1.1.1.244", false },
+		{ AF_INET6, "::1", false },	{ AF_INET6, "ff02::1", true }
+	};
+
+	UNUSED(state);
+
+	for (i = 0; i < sizeof(tests) / sizeof(tests[0]); i++) {
+		isc_netaddr_t na;
+		struct in_addr in;
+		struct in6_addr in6;
+		int r;
+
+		if (tests[i].family == AF_INET) {
+			r = inet_pton(AF_INET, tests[i].addr,
+				      (unsigned char *)&in);
+			assert_int_equal(r, 1);
+			isc_netaddr_fromin(&na, &in);
+		} else {
+			r = inet_pton(AF_INET6, tests[i].addr,
+				      (unsigned char *)&in6);
+			assert_int_equal(r, 1);
+			isc_netaddr_fromin6(&na, &in6);
+		}
+
+		assert_int_equal(isc_netaddr_ismulticast(&na),
+				 tests[i].is_multicast);
+	}
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(netaddr_isnetzero),
+		cmocka_unit_test(netaddr_masktoprefixlen),
+		cmocka_unit_test(netaddr_multicast),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/netmgr_test.c b/lib/isc/tests/netmgr_test.c
new file mode 100644
index 0000000..8e30359
--- /dev/null
+++ b/lib/isc/tests/netmgr_test.c
@@ -0,0 +1,2218 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <uv.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/nonce.h>
+#include <isc/os.h>
+#include <isc/quota.h>
+#include <isc/refcount.h>
+#include <isc/sockaddr.h>
+#include <isc/thread.h>
+#include <isc/util.h>
+
+#include "uv_wrap.h"
+#define KEEP_BEFORE
+
+#include "../netmgr/netmgr-int.h"
+#include "../netmgr/udp.c"
+#include "../netmgr/uv-compat.c"
+#include "../netmgr/uv-compat.h"
+#include "../netmgr_p.h"
+#include "isctest.h"
+
+typedef void (*stream_connect_function)(isc_nm_t *nm);
+
+static void
+connect_connect_cb(isc_nmhandle_t *handle, isc_result_t eresult, void *cbarg);
+static void
+connect_read_cb(isc_nmhandle_t *handle, isc_result_t eresult,
+		isc_region_t *region, void *cbarg);
+
+isc_nm_t *listen_nm = NULL;
+isc_nm_t *connect_nm = NULL;
+
+static isc_sockaddr_t udp_listen_addr;
+static isc_sockaddr_t udp_connect_addr;
+
+static isc_sockaddr_t tcp_listen_addr;
+static isc_sockaddr_t tcp_connect_addr;
+
+static uint64_t send_magic = 0;
+static uint64_t stop_magic = 0;
+
+static isc_region_t send_msg = { .base = (unsigned char *)&send_magic,
+				 .length = sizeof(send_magic) };
+
+static isc_region_t stop_msg = { .base = (unsigned char *)&stop_magic,
+				 .length = sizeof(stop_magic) };
+
+static atomic_bool do_send = false;
+static unsigned int workers = 0;
+
+static atomic_int_fast64_t nsends;
+static int_fast64_t esends; /* expected sends */
+
+static atomic_int_fast64_t ssends = 0;
+static atomic_int_fast64_t sreads = 0;
+static atomic_int_fast64_t saccepts = 0;
+
+static atomic_int_fast64_t cconnects = 0;
+static atomic_int_fast64_t csends = 0;
+static atomic_int_fast64_t creads = 0;
+static atomic_int_fast64_t ctimeouts = 0;
+
+static isc_refcount_t active_cconnects;
+static isc_refcount_t active_csends;
+static isc_refcount_t active_creads;
+static isc_refcount_t active_ssends;
+static isc_refcount_t active_sreads;
+
+static isc_quota_t listener_quota;
+static atomic_bool check_listener_quota;
+
+static bool skip_long_tests = false;
+
+static bool allow_send_back = false;
+static bool noanswer = false;
+
+static isc_nm_recv_cb_t connect_readcb = NULL;
+
+#define SKIP_IN_CI             \
+	if (skip_long_tests) { \
+		skip();        \
+		return;        \
+	}
+
+#define NSENDS 100
+
+/* Timeout for soft-timeout tests (0.05 seconds) */
+#define T_SOFT 50
+
+/* Timeouts in miliseconds */
+#define T_INIT	     120 * 1000
+#define T_IDLE	     120 * 1000
+#define T_KEEPALIVE  120 * 1000
+#define T_ADVERTISED 120 * 1000
+#define T_CONNECT    30 * 1000
+
+/* Wait for 1 second (1000 * 1000 microseconds) */
+#define WAIT_REPEATS 1000
+#define T_WAIT	     1000 /* In microseconds */
+
+#define WAIT_FOR(v, op, val)                                \
+	{                                                   \
+		X(v);                                       \
+		int_fast64_t __r = WAIT_REPEATS;            \
+		int_fast64_t __o = 0;                       \
+		do {                                        \
+			int_fast64_t __l = atomic_load(&v); \
+			if (__l op val) {                   \
+				break;                      \
+			};                                  \
+			if (__o == __l) {                   \
+				__r--;                      \
+			} else {                            \
+				__r = WAIT_REPEATS;         \
+			}                                   \
+			__o = __l;                          \
+			isc_test_nap(T_WAIT);               \
+		} while (__r > 0);                          \
+		X(v);                                       \
+		P(__r);                                     \
+		assert_true(atomic_load(&v) op val);        \
+	}
+
+#define WAIT_FOR_EQ(v, val) WAIT_FOR(v, ==, val)
+#define WAIT_FOR_NE(v, val) WAIT_FOR(v, !=, val)
+#define WAIT_FOR_LE(v, val) WAIT_FOR(v, <=, val)
+#define WAIT_FOR_LT(v, val) WAIT_FOR(v, <, val)
+#define WAIT_FOR_GE(v, val) WAIT_FOR(v, >=, val)
+#define WAIT_FOR_GT(v, val) WAIT_FOR(v, >, val)
+
+#define DONE() atomic_store(&do_send, false);
+
+#define CHECK_RANGE_FULL(v)                \
+	{                                  \
+		int __v = atomic_load(&v); \
+		assert_true(__v > 1);      \
+	}
+
+#define CHECK_RANGE_HALF(v)                \
+	{                                  \
+		int __v = atomic_load(&v); \
+		assert_true(__v > 1);      \
+	}
+
+/* Enable this to print values while running tests */
+#undef PRINT_DEBUG
+#ifdef PRINT_DEBUG
+#define X(v)                                                               \
+	fprintf(stderr, "%s:%s:%d:%s = %" PRId64 "\n", __func__, __FILE__, \
+		__LINE__, #v, atomic_load(&v))
+#define P(v) fprintf(stderr, #v " = %" PRId64 "\n", v)
+#define F()                                                   \
+	fprintf(stderr, "%s(%p, %s, %p)\n", __func__, handle, \
+		isc_result_totext(eresult), cbarg)
+#else
+#define X(v)
+#define P(v)
+#define F()
+#endif
+
+#define atomic_assert_int_eq(val, exp) assert_int_equal(atomic_load(&val), exp)
+#define atomic_assert_int_ne(val, exp) \
+	assert_int_not_equal(atomic_load(&val), exp)
+#define atomic_assert_int_le(val, exp) assert_true(atomic_load(&val) <= exp)
+#define atomic_assert_int_lt(val, exp) assert_true(atomic_load(&val) > exp)
+#define atomic_assert_int_ge(val, exp) assert_true(atomic_load(&val) >= exp)
+#define atomic_assert_int_gt(val, exp) assert_true(atomic_load(&val) > exp)
+
+static int
+_setup(void **state __attribute__((unused))) {
+	char *p = NULL;
+
+	if (workers == 0) {
+		workers = isc_os_ncpus();
+	}
+	p = getenv("ISC_TASK_WORKERS");
+	if (p != NULL) {
+		workers = atoi(p);
+	}
+	INSIST(workers != 0);
+
+	if (isc_test_begin(NULL, false, workers) != ISC_R_SUCCESS) {
+		return (-1);
+	}
+
+	signal(SIGPIPE, SIG_IGN);
+
+	if (getenv("CI") == NULL || getenv("CI_ENABLE_ALL_TESTS") != NULL) {
+		esends = NSENDS * workers;
+	} else {
+		esends = workers;
+		skip_long_tests = true;
+	}
+
+	return (0);
+}
+
+static int
+_teardown(void **state __attribute__((unused))) {
+	isc_test_end();
+
+	return (0);
+}
+
+static int
+setup_ephemeral_port(isc_sockaddr_t *addr, sa_family_t family) {
+	socklen_t addrlen = sizeof(*addr);
+	uv_os_sock_t fd;
+	int r;
+
+	isc_sockaddr_fromin6(addr, &in6addr_loopback, 0);
+
+	fd = socket(AF_INET6, family, 0);
+	if (fd < 0) {
+		perror("setup_ephemeral_port: socket()");
+		return (-1);
+	}
+
+	r = bind(fd, (const struct sockaddr *)&addr->type.sa,
+		 sizeof(addr->type.sin6));
+	if (r != 0) {
+		perror("setup_ephemeral_port: bind()");
+		isc__nm_closesocket(fd);
+		return (r);
+	}
+
+	r = getsockname(fd, (struct sockaddr *)&addr->type.sa, &addrlen);
+	if (r != 0) {
+		perror("setup_ephemeral_port: getsockname()");
+		isc__nm_closesocket(fd);
+		return (r);
+	}
+
+#if IPV6_RECVERR
+#define setsockopt_on(socket, level, name) \
+	setsockopt(socket, level, name, &(int){ 1 }, sizeof(int))
+
+	r = setsockopt_on(fd, IPPROTO_IPV6, IPV6_RECVERR);
+	if (r != 0) {
+		perror("setup_ephemeral_port");
+		isc__nm_closesocket(fd);
+		return (r);
+	}
+#endif
+
+	return (fd);
+}
+
+static int
+nm_setup(void **state __attribute__((unused))) {
+	uv_os_sock_t tcp_listen_sock = -1;
+	uv_os_sock_t udp_listen_sock = -1;
+
+	udp_connect_addr = (isc_sockaddr_t){ .length = 0 };
+	isc_sockaddr_fromin6(&udp_connect_addr, &in6addr_loopback, 0);
+
+	udp_listen_addr = (isc_sockaddr_t){ .length = 0 };
+	udp_listen_sock = setup_ephemeral_port(&udp_listen_addr, SOCK_DGRAM);
+	if (udp_listen_sock < 0) {
+		return (-1);
+	}
+	isc__nm_closesocket(udp_listen_sock);
+
+	tcp_connect_addr = (isc_sockaddr_t){ .length = 0 };
+	isc_sockaddr_fromin6(&tcp_connect_addr, &in6addr_loopback, 0);
+
+	tcp_listen_addr = (isc_sockaddr_t){ .length = 0 };
+	tcp_listen_sock = setup_ephemeral_port(&tcp_listen_addr, SOCK_STREAM);
+	if (tcp_listen_sock < 0) {
+		return (-1);
+	}
+	isc__nm_closesocket(tcp_listen_sock);
+
+	atomic_store(&do_send, true);
+	atomic_store(&nsends, esends);
+
+	atomic_store(&saccepts, 0);
+	atomic_store(&sreads, 0);
+	atomic_store(&ssends, 0);
+
+	atomic_store(&cconnects, 0);
+	atomic_store(&csends, 0);
+	atomic_store(&creads, 0);
+	atomic_store(&ctimeouts, 0);
+	allow_send_back = false;
+
+	isc_refcount_init(&active_cconnects, 0);
+	isc_refcount_init(&active_csends, 0);
+	isc_refcount_init(&active_creads, 0);
+	isc_refcount_init(&active_ssends, 0);
+	isc_refcount_init(&active_sreads, 0);
+
+	isc_nonce_buf(&send_magic, sizeof(send_magic));
+	isc_nonce_buf(&stop_magic, sizeof(stop_magic));
+	if (send_magic == stop_magic) {
+		return (-1);
+	}
+
+	isc__netmgr_create(test_mctx, workers, &listen_nm);
+	assert_non_null(listen_nm);
+	isc_nm_settimeouts(listen_nm, T_INIT, T_IDLE, T_KEEPALIVE,
+			   T_ADVERTISED);
+
+	isc__netmgr_create(test_mctx, workers, &connect_nm);
+	assert_non_null(connect_nm);
+	isc_nm_settimeouts(connect_nm, T_INIT, T_IDLE, T_KEEPALIVE,
+			   T_ADVERTISED);
+
+	isc_quota_init(&listener_quota, 0);
+	atomic_store(&check_listener_quota, false);
+
+	connect_readcb = connect_read_cb;
+	noanswer = false;
+
+	return (0);
+}
+
+static int
+nm_teardown(void **state __attribute__((unused))) {
+	UNUSED(state);
+
+	isc__netmgr_destroy(&connect_nm);
+	assert_null(connect_nm);
+
+	isc__netmgr_destroy(&listen_nm);
+	assert_null(listen_nm);
+
+	WAIT_FOR_EQ(active_cconnects, 0);
+	WAIT_FOR_EQ(active_csends, 0);
+	WAIT_FOR_EQ(active_csends, 0);
+	WAIT_FOR_EQ(active_ssends, 0);
+	WAIT_FOR_EQ(active_sreads, 0);
+
+	isc_refcount_destroy(&active_cconnects);
+	isc_refcount_destroy(&active_csends);
+	isc_refcount_destroy(&active_creads);
+	isc_refcount_destroy(&active_ssends);
+	isc_refcount_destroy(&active_sreads);
+
+	return (0);
+}
+
+/* Callbacks */
+
+static void
+noop_recv_cb(isc_nmhandle_t *handle, isc_result_t eresult, isc_region_t *region,
+	     void *cbarg) {
+	UNUSED(handle);
+	UNUSED(eresult);
+	UNUSED(region);
+	UNUSED(cbarg);
+}
+
+static unsigned int
+noop_accept_cb(isc_nmhandle_t *handle, unsigned int result, void *cbarg) {
+	UNUSED(handle);
+	UNUSED(result);
+	UNUSED(cbarg);
+
+	return (0);
+}
+
+static void
+connect_send_cb(isc_nmhandle_t *handle, isc_result_t eresult, void *cbarg);
+
+static void
+connect_send(isc_nmhandle_t *handle);
+
+static void
+connect_send_cb(isc_nmhandle_t *handle, isc_result_t eresult, void *cbarg) {
+	isc_nmhandle_t *sendhandle = handle;
+
+	assert_non_null(sendhandle);
+
+	UNUSED(cbarg);
+
+	F();
+
+	if (eresult != ISC_R_SUCCESS) {
+		/* Send failed, we need to stop reading too */
+		isc_nm_cancelread(handle);
+		goto unref;
+	}
+
+	atomic_fetch_add(&csends, 1);
+unref:
+	isc_refcount_decrement(&active_csends);
+	isc_nmhandle_detach(&sendhandle);
+}
+
+static void
+connect_send(isc_nmhandle_t *handle) {
+	isc_nmhandle_t *sendhandle = NULL;
+	isc_refcount_increment0(&active_csends);
+	isc_nmhandle_attach(handle, &sendhandle);
+	isc_nmhandle_setwritetimeout(handle, T_IDLE);
+	if (atomic_fetch_sub(&nsends, 1) > 1) {
+		isc_nm_send(sendhandle, &send_msg, connect_send_cb, NULL);
+	} else {
+		isc_nm_send(sendhandle, &stop_msg, connect_send_cb, NULL);
+	}
+}
+
+static void
+connect_read_cb(isc_nmhandle_t *handle, isc_result_t eresult,
+		isc_region_t *region, void *cbarg) {
+	uint64_t magic = 0;
+
+	UNUSED(cbarg);
+
+	assert_non_null(handle);
+
+	F();
+
+	if (eresult != ISC_R_SUCCESS) {
+		goto unref;
+	}
+
+	assert_true(region->length >= sizeof(magic));
+
+	atomic_fetch_add(&creads, 1);
+
+	memmove(&magic, region->base, sizeof(magic));
+
+	assert_true(magic == stop_magic || magic == send_magic);
+
+	if (magic == send_magic && allow_send_back) {
+		connect_send(handle);
+		return;
+	}
+
+unref:
+	isc_refcount_decrement(&active_creads);
+	isc_nmhandle_detach(&handle);
+}
+
+static void
+connect_connect_cb(isc_nmhandle_t *handle, isc_result_t eresult, void *cbarg) {
+	isc_nmhandle_t *readhandle = NULL;
+
+	UNUSED(cbarg);
+
+	F();
+
+	isc_refcount_decrement(&active_cconnects);
+
+	if (eresult != ISC_R_SUCCESS || connect_readcb == NULL) {
+		return;
+	}
+
+	atomic_fetch_add(&cconnects, 1);
+
+	isc_refcount_increment0(&active_creads);
+	isc_nmhandle_attach(handle, &readhandle);
+	isc_nm_read(handle, connect_readcb, NULL);
+
+	connect_send(handle);
+}
+
+static void
+listen_send_cb(isc_nmhandle_t *handle, isc_result_t eresult, void *cbarg) {
+	isc_nmhandle_t *sendhandle = handle;
+
+	UNUSED(cbarg);
+	UNUSED(eresult);
+
+	assert_non_null(sendhandle);
+
+	F();
+
+	if (eresult != ISC_R_SUCCESS) {
+		goto unref;
+	}
+
+	atomic_fetch_add(&ssends, 1);
+unref:
+	isc_nmhandle_detach(&sendhandle);
+	isc_refcount_decrement(&active_ssends);
+}
+
+static void
+listen_read_cb(isc_nmhandle_t *handle, isc_result_t eresult,
+	       isc_region_t *region, void *cbarg) {
+	uint64_t magic = 0;
+
+	assert_non_null(handle);
+
+	F();
+
+	if (eresult != ISC_R_SUCCESS) {
+		goto unref;
+	}
+
+	atomic_fetch_add(&sreads, 1);
+
+	assert_true(region->length >= sizeof(magic));
+
+	memmove(&magic, region->base, sizeof(magic));
+	assert_true(magic == stop_magic || magic == send_magic);
+
+	if (magic == send_magic) {
+		if (!noanswer) {
+			isc_nmhandle_t *sendhandle = NULL;
+			isc_nmhandle_attach(handle, &sendhandle);
+			isc_refcount_increment0(&active_ssends);
+			isc_nmhandle_setwritetimeout(sendhandle, T_IDLE);
+			isc_nm_send(sendhandle, &send_msg, listen_send_cb,
+				    cbarg);
+		}
+		return;
+	}
+
+unref:
+	if (handle == cbarg) {
+		isc_refcount_decrement(&active_sreads);
+		isc_nmhandle_detach(&handle);
+	}
+}
+
+static isc_result_t
+listen_accept_cb(isc_nmhandle_t *handle, isc_result_t eresult, void *cbarg) {
+	UNUSED(handle);
+	UNUSED(cbarg);
+
+	F();
+
+	return (eresult);
+}
+
+static isc_result_t
+stream_accept_cb(isc_nmhandle_t *handle, isc_result_t eresult, void *cbarg) {
+	isc_nmhandle_t *readhandle = NULL;
+
+	UNUSED(cbarg);
+
+	F();
+
+	if (eresult != ISC_R_SUCCESS) {
+		return (eresult);
+	}
+
+	atomic_fetch_add(&saccepts, 1);
+
+	isc_refcount_increment0(&active_sreads);
+	isc_nmhandle_attach(handle, &readhandle);
+	isc_nm_read(handle, listen_read_cb, readhandle);
+
+	return (ISC_R_SUCCESS);
+}
+
+typedef void (*connect_func)(isc_nm_t *);
+
+static isc_threadresult_t
+connect_thread(isc_threadarg_t arg) {
+	connect_func connect = (connect_func)arg;
+	isc_sockaddr_t connect_addr;
+
+	connect_addr = (isc_sockaddr_t){ .length = 0 };
+	isc_sockaddr_fromin6(&connect_addr, &in6addr_loopback, 0);
+
+	while (atomic_load(&do_send)) {
+		uint_fast32_t active =
+			isc_refcount_increment0(&active_cconnects);
+		if (active > workers) {
+			/*
+			 * If we have more active connections than workers,
+			 * start slowing down the connections to prevent the
+			 * thundering herd problem.
+			 */
+			isc_test_nap((active - workers) * 1000);
+		}
+		connect(connect_nm);
+	}
+
+	return ((isc_threadresult_t)0);
+}
+
+/* UDP */
+
+static void
+udp_connect(isc_nm_t *nm) {
+	isc_nm_udpconnect(nm, &udp_connect_addr, &udp_listen_addr,
+			  connect_connect_cb, NULL, T_CONNECT, 0);
+}
+
+static void
+mock_listenudp_uv_udp_open(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	WILL_RETURN(uv_udp_open, UV_ENOMEM);
+
+	result = isc_nm_listenudp(listen_nm, &udp_listen_addr, noop_recv_cb,
+				  NULL, 0, &listen_sock);
+	assert_int_not_equal(result, ISC_R_SUCCESS);
+	assert_null(listen_sock);
+
+	RESET_RETURN;
+}
+
+static void
+mock_listenudp_uv_udp_bind(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	WILL_RETURN(uv_udp_bind, UV_EADDRINUSE);
+
+	result = isc_nm_listenudp(listen_nm, &udp_listen_addr, noop_recv_cb,
+				  NULL, 0, &listen_sock);
+	assert_int_not_equal(result, ISC_R_SUCCESS);
+	assert_null(listen_sock);
+
+	RESET_RETURN;
+}
+
+static void
+mock_listenudp_uv_udp_recv_start(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	WILL_RETURN(uv_udp_recv_start, UV_EADDRINUSE);
+
+	result = isc_nm_listenudp(listen_nm, &udp_listen_addr, noop_recv_cb,
+				  NULL, 0, &listen_sock);
+	assert_int_not_equal(result, ISC_R_SUCCESS);
+	assert_null(listen_sock);
+
+	RESET_RETURN;
+}
+
+static void
+mock_udpconnect_uv_udp_open(void **state __attribute__((unused))) {
+	WILL_RETURN(uv_udp_open, UV_ENOMEM);
+
+	connect_readcb = NULL;
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_udpconnect(connect_nm, &udp_connect_addr, &udp_listen_addr,
+			  connect_connect_cb, NULL, T_CONNECT, 0);
+	isc__netmgr_shutdown(connect_nm);
+
+	RESET_RETURN;
+}
+
+static void
+mock_udpconnect_uv_udp_bind(void **state __attribute__((unused))) {
+	WILL_RETURN(uv_udp_bind, UV_ENOMEM);
+
+	connect_readcb = NULL;
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_udpconnect(connect_nm, &udp_connect_addr, &udp_listen_addr,
+			  connect_connect_cb, NULL, T_CONNECT, 0);
+	isc__netmgr_shutdown(connect_nm);
+
+	RESET_RETURN;
+}
+
+#if UV_VERSION_HEX >= UV_VERSION(1, 27, 0)
+static void
+mock_udpconnect_uv_udp_connect(void **state __attribute__((unused))) {
+	WILL_RETURN(uv_udp_connect, UV_ENOMEM);
+
+	connect_readcb = NULL;
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_udpconnect(connect_nm, &udp_connect_addr, &udp_listen_addr,
+			  connect_connect_cb, NULL, T_CONNECT, 0);
+	isc__netmgr_shutdown(connect_nm);
+
+	RESET_RETURN;
+}
+#endif
+
+static void
+mock_udpconnect_uv_recv_buffer_size(void **state __attribute__((unused))) {
+	WILL_RETURN(uv_recv_buffer_size, UV_ENOMEM);
+
+	connect_readcb = NULL;
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_udpconnect(connect_nm, &udp_connect_addr, &udp_listen_addr,
+			  connect_connect_cb, NULL, T_CONNECT, 0);
+	isc__netmgr_shutdown(connect_nm);
+
+	RESET_RETURN;
+}
+
+static void
+mock_udpconnect_uv_send_buffer_size(void **state __attribute__((unused))) {
+	WILL_RETURN(uv_send_buffer_size, UV_ENOMEM);
+
+	connect_readcb = NULL;
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_udpconnect(connect_nm, &udp_connect_addr, &udp_listen_addr,
+			  connect_connect_cb, NULL, T_CONNECT, 0);
+	isc__netmgr_shutdown(connect_nm);
+
+	RESET_RETURN;
+}
+
+static void
+udp_noop(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	result = isc_nm_listenudp(listen_nm, &udp_listen_addr, noop_recv_cb,
+				  NULL, 0, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	connect_readcb = NULL;
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_udpconnect(connect_nm, &udp_connect_addr, &udp_listen_addr,
+			  connect_connect_cb, NULL, T_CONNECT, 0);
+	isc__netmgr_shutdown(connect_nm);
+
+	atomic_assert_int_eq(cconnects, 0);
+	atomic_assert_int_eq(csends, 0);
+	atomic_assert_int_eq(creads, 0);
+	atomic_assert_int_eq(sreads, 0);
+	atomic_assert_int_eq(ssends, 0);
+}
+
+static void
+udp_noresponse(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	result = isc_nm_listenudp(listen_nm, &udp_listen_addr, noop_recv_cb,
+				  NULL, 0, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_udpconnect(connect_nm, &udp_connect_addr, &udp_listen_addr,
+			  connect_connect_cb, NULL, T_CONNECT, 0);
+
+	WAIT_FOR_EQ(cconnects, 1);
+	WAIT_FOR_EQ(csends, 1);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+	isc__netmgr_shutdown(connect_nm);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	atomic_assert_int_eq(cconnects, 1);
+	atomic_assert_int_eq(csends, 1);
+	atomic_assert_int_eq(creads, 0);
+	atomic_assert_int_eq(sreads, 0);
+	atomic_assert_int_eq(ssends, 0);
+}
+
+static void
+timeout_retry_cb(isc_nmhandle_t *handle, isc_result_t eresult,
+		 isc_region_t *region, void *cbarg) {
+	UNUSED(region);
+	UNUSED(cbarg);
+
+	assert_non_null(handle);
+
+	F();
+
+	if (eresult == ISC_R_TIMEDOUT && atomic_load(&csends) < 5) {
+		isc_nmhandle_settimeout(handle, T_SOFT);
+		connect_send(handle);
+		return;
+	}
+
+	atomic_fetch_add(&ctimeouts, 1);
+
+	isc_refcount_decrement(&active_creads);
+	isc_nmhandle_detach(&handle);
+}
+
+static void
+udp_timeout_recovery(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	SKIP_IN_CI;
+
+	/*
+	 * Listen using the noop callback so that client reads will time out.
+	 */
+	result = isc_nm_listenudp(listen_nm, &udp_listen_addr, noop_recv_cb,
+				  NULL, 0, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/*
+	 * Connect with client timeout set to 0.05 seconds, then sleep for at
+	 * least a second for each 'tick'. timeout_retry_cb() will give up
+	 * after five timeouts.
+	 */
+	connect_readcb = timeout_retry_cb;
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_udpconnect(connect_nm, &udp_connect_addr, &udp_listen_addr,
+			  connect_connect_cb, NULL, T_SOFT, 0);
+
+	WAIT_FOR_EQ(cconnects, 1);
+	WAIT_FOR_GE(csends, 1);
+	WAIT_FOR_GE(csends, 2);
+	WAIT_FOR_GE(csends, 3);
+	WAIT_FOR_GE(csends, 4);
+	WAIT_FOR_EQ(csends, 5);
+	WAIT_FOR_EQ(ctimeouts, 1);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+	isc__netmgr_shutdown(connect_nm);
+}
+
+static void
+udp_recv_one(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	atomic_store(&nsends, 1);
+
+	result = isc_nm_listenudp(listen_nm, &udp_listen_addr, listen_read_cb,
+				  NULL, 0, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_udpconnect(connect_nm, &udp_connect_addr, &udp_listen_addr,
+			  connect_connect_cb, NULL, T_CONNECT, 0);
+
+	WAIT_FOR_EQ(cconnects, 1);
+	WAIT_FOR_LE(nsends, 0);
+	WAIT_FOR_EQ(csends, 1);
+	WAIT_FOR_EQ(sreads, 1);
+	WAIT_FOR_EQ(ssends, 0);
+	WAIT_FOR_EQ(creads, 0);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+	isc__netmgr_shutdown(connect_nm);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	atomic_assert_int_eq(cconnects, 1);
+	atomic_assert_int_eq(csends, 1);
+	atomic_assert_int_eq(creads, 0);
+	atomic_assert_int_eq(sreads, 1);
+	atomic_assert_int_eq(ssends, 0);
+}
+
+static void
+udp_recv_two(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	atomic_store(&nsends, 2);
+
+	result = isc_nm_listenudp(listen_nm, &udp_listen_addr, listen_read_cb,
+				  NULL, 0, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_udpconnect(connect_nm, &udp_connect_addr, &udp_listen_addr,
+			  connect_connect_cb, NULL, T_CONNECT, 0);
+
+	WAIT_FOR_EQ(cconnects, 1);
+
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_udpconnect(connect_nm, &udp_connect_addr, &udp_listen_addr,
+			  connect_connect_cb, NULL, T_CONNECT, 0);
+
+	WAIT_FOR_EQ(cconnects, 2);
+	WAIT_FOR_LE(nsends, 0);
+	WAIT_FOR_EQ(csends, 2);
+	WAIT_FOR_EQ(sreads, 2);
+	WAIT_FOR_EQ(ssends, 1);
+	WAIT_FOR_EQ(creads, 1);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+	isc__netmgr_shutdown(connect_nm);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	atomic_assert_int_eq(cconnects, 2);
+	atomic_assert_int_eq(csends, 2);
+	atomic_assert_int_eq(creads, 1);
+	atomic_assert_int_eq(sreads, 2);
+	atomic_assert_int_eq(ssends, 1);
+}
+
+static void
+udp_recv_send(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_thread_t threads[workers];
+
+	SKIP_IN_CI;
+
+	result = isc_nm_listenudp(listen_nm, &udp_listen_addr, listen_read_cb,
+				  NULL, 0, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(threads, 0, sizeof(threads));
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_create(connect_thread, udp_connect, &threads[i]);
+	}
+
+	WAIT_FOR_GE(cconnects, esends);
+	WAIT_FOR_GE(csends, esends);
+	WAIT_FOR_GE(sreads, esends);
+	WAIT_FOR_GE(ssends, esends / 2);
+	WAIT_FOR_GE(creads, esends / 2);
+
+	DONE();
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	isc__netmgr_shutdown(connect_nm);
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	CHECK_RANGE_FULL(csends);
+	CHECK_RANGE_FULL(creads);
+	CHECK_RANGE_FULL(sreads);
+	CHECK_RANGE_FULL(ssends);
+}
+
+static void
+udp_recv_half_send(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_thread_t threads[workers];
+
+	SKIP_IN_CI;
+
+	result = isc_nm_listenudp(listen_nm, &udp_listen_addr, listen_read_cb,
+				  NULL, 0, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(threads, 0, sizeof(threads));
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_create(connect_thread, udp_connect, &threads[i]);
+	}
+
+	WAIT_FOR_GE(cconnects, esends / 2);
+	WAIT_FOR_GE(csends, esends / 2);
+	WAIT_FOR_GE(sreads, esends / 2);
+	WAIT_FOR_GE(ssends, esends / 2);
+	WAIT_FOR_GE(creads, esends / 2);
+
+	isc__netmgr_shutdown(connect_nm);
+
+	DONE();
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	CHECK_RANGE_FULL(csends);
+	CHECK_RANGE_HALF(creads);
+	CHECK_RANGE_HALF(sreads);
+	CHECK_RANGE_HALF(ssends);
+}
+
+static void
+udp_half_recv_send(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_thread_t threads[workers];
+
+	SKIP_IN_CI;
+
+	result = isc_nm_listenudp(listen_nm, &udp_listen_addr, listen_read_cb,
+				  NULL, 0, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(threads, 0, sizeof(threads));
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_create(connect_thread, udp_connect, &threads[i]);
+	}
+
+	WAIT_FOR_GE(cconnects, esends / 2);
+	WAIT_FOR_GE(csends, esends / 2);
+	WAIT_FOR_GE(sreads, esends / 2);
+	WAIT_FOR_GE(ssends, esends / 2);
+	WAIT_FOR_GE(creads, esends / 2);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	/* Try to send a little while longer */
+	isc_test_nap((esends / 2) * 10000);
+
+	isc__netmgr_shutdown(connect_nm);
+
+	DONE();
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	CHECK_RANGE_FULL(csends);
+	CHECK_RANGE_HALF(creads);
+	CHECK_RANGE_HALF(sreads);
+	CHECK_RANGE_HALF(ssends);
+}
+
+static void
+udp_half_recv_half_send(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_thread_t threads[workers];
+
+	SKIP_IN_CI;
+
+	result = isc_nm_listenudp(listen_nm, &udp_listen_addr, listen_read_cb,
+				  NULL, 0, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(threads, 0, sizeof(threads));
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_create(connect_thread, udp_connect, &threads[i]);
+	}
+
+	WAIT_FOR_GE(cconnects, esends / 2);
+	WAIT_FOR_GE(csends, esends / 2);
+	WAIT_FOR_GE(sreads, esends / 2);
+	WAIT_FOR_GE(ssends, esends / 2);
+	WAIT_FOR_GE(creads, esends / 2);
+
+	isc__netmgr_shutdown(connect_nm);
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	DONE();
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	CHECK_RANGE_FULL(csends);
+	CHECK_RANGE_HALF(creads);
+	CHECK_RANGE_HALF(sreads);
+	CHECK_RANGE_HALF(ssends);
+}
+
+/* Common stream protocols code */
+
+static isc_quota_t *
+tcp_listener_init_quota(size_t nthreads) {
+	isc_quota_t *quotap = NULL;
+	if (atomic_load(&check_listener_quota)) {
+		unsigned max_quota = ISC_MAX(nthreads / 2, 1);
+		isc_quota_max(&listener_quota, max_quota);
+		quotap = &listener_quota;
+	}
+	return (quotap);
+}
+
+static void
+tcp_connect(isc_nm_t *nm) {
+	isc_nm_tcpconnect(nm, &tcp_connect_addr, &tcp_listen_addr,
+			  connect_connect_cb, NULL, T_CONNECT, 0);
+}
+
+static stream_connect_function
+get_stream_connect_function(void) {
+	return (tcp_connect);
+}
+
+static isc_result_t
+stream_listen(isc_nm_accept_cb_t accept_cb, void *accept_cbarg,
+	      size_t extrahandlesize, int backlog, isc_quota_t *quota,
+	      isc_nmsocket_t **sockp) {
+	isc_result_t result = ISC_R_SUCCESS;
+
+	result = isc_nm_listentcp(listen_nm, &tcp_listen_addr, accept_cb,
+				  accept_cbarg, extrahandlesize, backlog, quota,
+				  sockp);
+
+	return (result);
+}
+
+static void
+stream_connect(isc_nm_cb_t cb, void *cbarg, unsigned int timeout,
+	       size_t extrahandlesize) {
+	isc_nm_tcpconnect(connect_nm, &tcp_connect_addr, &tcp_listen_addr, cb,
+			  cbarg, timeout, extrahandlesize);
+}
+
+static void
+stream_noop(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	result = stream_listen(noop_accept_cb, NULL, 0, 0, NULL, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	connect_readcb = NULL;
+	isc_refcount_increment0(&active_cconnects);
+	stream_connect(connect_connect_cb, NULL, T_CONNECT, 0);
+	isc__netmgr_shutdown(connect_nm);
+
+	atomic_assert_int_eq(cconnects, 0);
+	atomic_assert_int_eq(csends, 0);
+	atomic_assert_int_eq(creads, 0);
+	atomic_assert_int_eq(sreads, 0);
+	atomic_assert_int_eq(ssends, 0);
+}
+
+static void
+stream_noresponse(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	result = stream_listen(noop_accept_cb, NULL, 0, 0, NULL, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_refcount_increment0(&active_cconnects);
+	stream_connect(connect_connect_cb, NULL, T_CONNECT, 0);
+
+	WAIT_FOR_EQ(cconnects, 1);
+	WAIT_FOR_EQ(csends, 1);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+	isc__netmgr_shutdown(connect_nm);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	atomic_assert_int_eq(cconnects, 1);
+	atomic_assert_int_eq(csends, 1);
+	atomic_assert_int_eq(creads, 0);
+	atomic_assert_int_eq(sreads, 0);
+	atomic_assert_int_eq(ssends, 0);
+}
+
+static void
+stream_timeout_recovery(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	SKIP_IN_CI;
+
+	/*
+	 * Accept connections but don't send responses, forcing client
+	 * reads to time out.
+	 */
+	noanswer = true;
+	result = stream_listen(stream_accept_cb, NULL, 0, 0, NULL,
+			       &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/*
+	 * Shorten all the client timeouts to 0.05 seconds.
+	 */
+	isc_nm_settimeouts(connect_nm, T_SOFT, T_SOFT, T_SOFT, T_SOFT);
+	connect_readcb = timeout_retry_cb;
+	isc_refcount_increment0(&active_cconnects);
+	stream_connect(connect_connect_cb, NULL, T_SOFT, 0);
+
+	WAIT_FOR_EQ(cconnects, 1);
+	WAIT_FOR_GE(csends, 1);
+	WAIT_FOR_GE(csends, 2);
+	WAIT_FOR_GE(csends, 3);
+	WAIT_FOR_GE(csends, 4);
+	WAIT_FOR_EQ(csends, 5);
+	WAIT_FOR_EQ(ctimeouts, 1);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+	isc__netmgr_shutdown(connect_nm);
+}
+
+static void
+stream_recv_one(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_quota_t *quotap = tcp_listener_init_quota(1);
+
+	atomic_store(&nsends, 1);
+
+	result = stream_listen(stream_accept_cb, NULL, 0, 0, quotap,
+			       &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_refcount_increment0(&active_cconnects);
+	stream_connect(connect_connect_cb, NULL, T_CONNECT, 0);
+
+	WAIT_FOR_EQ(cconnects, 1);
+	WAIT_FOR_LE(nsends, 0);
+	WAIT_FOR_EQ(csends, 1);
+	WAIT_FOR_EQ(sreads, 1);
+	WAIT_FOR_EQ(ssends, 0);
+	WAIT_FOR_EQ(creads, 0);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+	isc__netmgr_shutdown(connect_nm);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	atomic_assert_int_eq(cconnects, 1);
+	atomic_assert_int_eq(csends, 1);
+	atomic_assert_int_eq(creads, 0);
+	atomic_assert_int_eq(sreads, 1);
+	atomic_assert_int_eq(ssends, 0);
+}
+
+static void
+stream_recv_two(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_quota_t *quotap = tcp_listener_init_quota(1);
+
+	atomic_store(&nsends, 2);
+
+	result = stream_listen(stream_accept_cb, NULL, 0, 0, quotap,
+			       &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_refcount_increment0(&active_cconnects);
+	stream_connect(connect_connect_cb, NULL, T_CONNECT, 0);
+
+	WAIT_FOR_EQ(cconnects, 1);
+
+	isc_refcount_increment0(&active_cconnects);
+	stream_connect(connect_connect_cb, NULL, T_CONNECT, 0);
+
+	WAIT_FOR_EQ(cconnects, 2);
+	WAIT_FOR_LE(nsends, 0);
+	WAIT_FOR_EQ(csends, 2);
+	WAIT_FOR_EQ(sreads, 2);
+	WAIT_FOR_EQ(ssends, 1);
+	WAIT_FOR_EQ(creads, 1);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+	isc__netmgr_shutdown(connect_nm);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	atomic_assert_int_eq(cconnects, 2);
+	atomic_assert_int_eq(csends, 2);
+	atomic_assert_int_eq(creads, 1);
+	atomic_assert_int_eq(sreads, 2);
+	atomic_assert_int_eq(ssends, 1);
+}
+
+static void
+stream_recv_send(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_thread_t threads[workers];
+	isc_quota_t *quotap = tcp_listener_init_quota(workers);
+
+	SKIP_IN_CI;
+
+	result = stream_listen(stream_accept_cb, NULL, 0, 0, quotap,
+			       &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(threads, 0, sizeof(threads));
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_create(connect_thread, get_stream_connect_function(),
+				  &threads[i]);
+	}
+
+	if (allow_send_back) {
+		WAIT_FOR_GE(cconnects, 1);
+	} else {
+		WAIT_FOR_GE(cconnects, esends);
+	}
+	WAIT_FOR_GE(csends, esends);
+	WAIT_FOR_GE(sreads, esends);
+	WAIT_FOR_GE(ssends, esends / 2);
+	WAIT_FOR_GE(creads, esends / 2);
+
+	DONE();
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	isc__netmgr_shutdown(connect_nm);
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	CHECK_RANGE_FULL(csends);
+	CHECK_RANGE_FULL(creads);
+	CHECK_RANGE_FULL(sreads);
+	CHECK_RANGE_FULL(ssends);
+}
+
+static void
+stream_recv_half_send(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_thread_t threads[workers];
+	isc_quota_t *quotap = tcp_listener_init_quota(workers);
+
+	SKIP_IN_CI;
+
+	result = stream_listen(stream_accept_cb, NULL, 0, 0, quotap,
+			       &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(threads, 0, sizeof(threads));
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_create(connect_thread, get_stream_connect_function(),
+				  &threads[i]);
+	}
+
+	if (allow_send_back) {
+		WAIT_FOR_GE(cconnects, 1);
+	} else {
+		WAIT_FOR_GE(cconnects, esends / 2);
+	}
+	WAIT_FOR_GE(csends, esends / 2);
+	WAIT_FOR_GE(sreads, esends / 2);
+	WAIT_FOR_GE(ssends, esends / 2);
+	WAIT_FOR_GE(creads, esends / 2);
+
+	isc__netmgr_shutdown(connect_nm);
+
+	DONE();
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	CHECK_RANGE_HALF(csends);
+	CHECK_RANGE_HALF(creads);
+	CHECK_RANGE_HALF(sreads);
+	CHECK_RANGE_HALF(ssends);
+}
+
+static void
+stream_half_recv_send(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_thread_t threads[workers];
+	isc_quota_t *quotap = tcp_listener_init_quota(workers);
+
+	SKIP_IN_CI;
+
+	result = stream_listen(stream_accept_cb, NULL, 0, 0, quotap,
+			       &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(threads, 0, sizeof(threads));
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_create(connect_thread, get_stream_connect_function(),
+				  &threads[i]);
+	}
+
+	if (allow_send_back) {
+		WAIT_FOR_GE(cconnects, 1);
+	} else {
+		WAIT_FOR_GE(cconnects, esends / 2);
+	}
+	WAIT_FOR_GE(csends, esends / 2);
+	WAIT_FOR_GE(sreads, esends / 2);
+	WAIT_FOR_GE(ssends, esends / 2);
+	WAIT_FOR_GE(creads, esends / 2);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	/* Try to send a little while longer */
+	isc_test_nap((esends / 2) * 10000);
+
+	isc__netmgr_shutdown(connect_nm);
+
+	DONE();
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	CHECK_RANGE_HALF(csends);
+	CHECK_RANGE_HALF(creads);
+	CHECK_RANGE_HALF(sreads);
+	CHECK_RANGE_HALF(ssends);
+}
+
+static void
+stream_half_recv_half_send(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_thread_t threads[workers];
+	isc_quota_t *quotap = tcp_listener_init_quota(workers);
+
+	SKIP_IN_CI;
+
+	result = stream_listen(stream_accept_cb, NULL, 0, 0, quotap,
+			       &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(threads, 0, sizeof(threads));
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_create(connect_thread, get_stream_connect_function(),
+				  &threads[i]);
+	}
+
+	if (allow_send_back) {
+		WAIT_FOR_GE(cconnects, 1);
+	} else {
+		WAIT_FOR_GE(cconnects, esends / 2);
+	}
+	WAIT_FOR_GE(csends, esends / 2);
+	WAIT_FOR_GE(sreads, esends / 2);
+	WAIT_FOR_GE(ssends, esends / 2);
+	WAIT_FOR_GE(creads, esends / 2);
+
+	isc__netmgr_shutdown(connect_nm);
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	DONE();
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	CHECK_RANGE_HALF(csends);
+	CHECK_RANGE_HALF(creads);
+	CHECK_RANGE_HALF(sreads);
+	CHECK_RANGE_HALF(ssends);
+}
+
+/* TCP */
+static void
+tcp_noop(void **state) {
+	stream_noop(state);
+}
+
+static void
+tcp_noresponse(void **state) {
+	stream_noresponse(state);
+}
+
+static void
+tcp_timeout_recovery(void **state) {
+	stream_timeout_recovery(state);
+}
+
+static void
+tcp_recv_one(void **state) {
+	stream_recv_one(state);
+}
+
+static void
+tcp_recv_two(void **state) {
+	stream_recv_two(state);
+}
+
+static void
+tcp_recv_send(void **state) {
+	SKIP_IN_CI;
+	stream_recv_send(state);
+}
+
+static void
+tcp_recv_half_send(void **state) {
+	SKIP_IN_CI;
+	stream_recv_half_send(state);
+}
+
+static void
+tcp_half_recv_send(void **state) {
+	SKIP_IN_CI;
+	stream_half_recv_send(state);
+}
+
+static void
+tcp_half_recv_half_send(void **state) {
+	SKIP_IN_CI;
+	stream_half_recv_half_send(state);
+}
+
+static void
+tcp_recv_send_sendback(void **state) {
+	SKIP_IN_CI;
+	stream_recv_send(state);
+}
+
+static void
+tcp_recv_half_send_sendback(void **state) {
+	SKIP_IN_CI;
+	stream_recv_half_send(state);
+}
+
+static void
+tcp_half_recv_send_sendback(void **state) {
+	SKIP_IN_CI;
+	stream_half_recv_send(state);
+}
+
+static void
+tcp_half_recv_half_send_sendback(void **state) {
+	SKIP_IN_CI;
+	stream_half_recv_half_send(state);
+}
+
+/* TCP Quota */
+
+static void
+tcp_recv_one_quota(void **state) {
+	atomic_store(&check_listener_quota, true);
+	stream_recv_one(state);
+}
+
+static void
+tcp_recv_two_quota(void **state) {
+	atomic_store(&check_listener_quota, true);
+	stream_recv_two(state);
+}
+
+static void
+tcp_recv_send_quota(void **state) {
+	SKIP_IN_CI;
+	atomic_store(&check_listener_quota, true);
+	stream_recv_send(state);
+}
+
+static void
+tcp_recv_half_send_quota(void **state) {
+	SKIP_IN_CI;
+	atomic_store(&check_listener_quota, true);
+	stream_recv_half_send(state);
+}
+
+static void
+tcp_half_recv_send_quota(void **state) {
+	SKIP_IN_CI;
+	atomic_store(&check_listener_quota, true);
+	stream_half_recv_send(state);
+}
+
+static void
+tcp_half_recv_half_send_quota(void **state) {
+	SKIP_IN_CI;
+	atomic_store(&check_listener_quota, true);
+	stream_half_recv_half_send(state);
+}
+
+static void
+tcp_recv_send_quota_sendback(void **state) {
+	SKIP_IN_CI;
+	atomic_store(&check_listener_quota, true);
+	allow_send_back = true;
+	stream_recv_send(state);
+}
+
+static void
+tcp_recv_half_send_quota_sendback(void **state) {
+	SKIP_IN_CI;
+	atomic_store(&check_listener_quota, true);
+	allow_send_back = true;
+	stream_recv_half_send(state);
+}
+
+static void
+tcp_half_recv_send_quota_sendback(void **state) {
+	SKIP_IN_CI;
+	atomic_store(&check_listener_quota, true);
+	allow_send_back = true;
+	stream_half_recv_send(state);
+}
+
+static void
+tcp_half_recv_half_send_quota_sendback(void **state) {
+	SKIP_IN_CI;
+	atomic_store(&check_listener_quota, true);
+	allow_send_back = true;
+	stream_half_recv_half_send(state);
+}
+
+/* TCPDNS */
+
+static void
+tcpdns_connect(isc_nm_t *nm) {
+	isc_nm_tcpdnsconnect(nm, &tcp_connect_addr, &tcp_listen_addr,
+			     connect_connect_cb, NULL, T_CONNECT, 0);
+}
+
+static void
+tcpdns_noop(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	result = isc_nm_listentcpdns(listen_nm, &tcp_listen_addr, noop_recv_cb,
+				     NULL, noop_accept_cb, NULL, 0, 0, NULL,
+				     &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	connect_readcb = NULL;
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_tcpdnsconnect(connect_nm, &tcp_connect_addr, &tcp_listen_addr,
+			     connect_connect_cb, NULL, T_CONNECT, 0);
+	isc__netmgr_shutdown(connect_nm);
+
+	atomic_assert_int_eq(cconnects, 0);
+	atomic_assert_int_eq(csends, 0);
+	atomic_assert_int_eq(creads, 0);
+	atomic_assert_int_eq(sreads, 0);
+	atomic_assert_int_eq(ssends, 0);
+}
+
+static void
+tcpdns_noresponse(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	isc_refcount_increment0(&active_cconnects);
+	result = isc_nm_listentcpdns(listen_nm, &tcp_listen_addr, noop_recv_cb,
+				     NULL, noop_accept_cb, NULL, 0, 0, NULL,
+				     &listen_sock);
+	if (result != ISC_R_SUCCESS) {
+		isc_refcount_decrement(&active_cconnects);
+		isc_test_nap(1000);
+	}
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_nm_tcpdnsconnect(connect_nm, &tcp_connect_addr, &tcp_listen_addr,
+			     connect_connect_cb, NULL, T_CONNECT, 0);
+
+	WAIT_FOR_EQ(cconnects, 1);
+	WAIT_FOR_EQ(csends, 1);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+	isc__netmgr_shutdown(connect_nm);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	atomic_assert_int_eq(cconnects, 1);
+	atomic_assert_int_eq(csends, 1);
+	atomic_assert_int_eq(creads, 0);
+	atomic_assert_int_eq(sreads, 0);
+	atomic_assert_int_eq(ssends, 0);
+}
+
+static void
+tcpdns_timeout_recovery(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	SKIP_IN_CI;
+
+	/*
+	 * Accept connections but don't send responses, forcing client
+	 * reads to time out.
+	 */
+	noanswer = true;
+	result = isc_nm_listentcpdns(listen_nm, &tcp_listen_addr,
+				     listen_read_cb, NULL, listen_accept_cb,
+				     NULL, 0, 0, NULL, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/*
+	 * Shorten all the TCP client timeouts to 0.05 seconds, connect,
+	 * then sleep for at least a second for each 'tick'.
+	 * timeout_retry_cb() will give up after five timeouts.
+	 */
+	connect_readcb = timeout_retry_cb;
+	isc_nm_settimeouts(connect_nm, T_SOFT, T_SOFT, T_SOFT, T_SOFT);
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_tcpdnsconnect(connect_nm, &tcp_connect_addr, &tcp_listen_addr,
+			     connect_connect_cb, NULL, T_SOFT, 0);
+
+	WAIT_FOR_EQ(cconnects, 1);
+	WAIT_FOR_GE(csends, 1);
+	WAIT_FOR_GE(csends, 2);
+	WAIT_FOR_GE(csends, 3);
+	WAIT_FOR_GE(csends, 4);
+	WAIT_FOR_EQ(csends, 5);
+	WAIT_FOR_EQ(ctimeouts, 1);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+	isc__netmgr_shutdown(connect_nm);
+}
+
+static void
+tcpdns_recv_one(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	atomic_store(&nsends, 1);
+
+	result = isc_nm_listentcpdns(listen_nm, &tcp_listen_addr,
+				     listen_read_cb, NULL, listen_accept_cb,
+				     NULL, 0, 0, NULL, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_tcpdnsconnect(connect_nm, &tcp_connect_addr, &tcp_listen_addr,
+			     connect_connect_cb, NULL, T_CONNECT, 0);
+
+	WAIT_FOR_EQ(cconnects, 1);
+	WAIT_FOR_LE(nsends, 0);
+	WAIT_FOR_EQ(csends, 1);
+	WAIT_FOR_EQ(sreads, 1);
+	WAIT_FOR_EQ(ssends, 0);
+	WAIT_FOR_EQ(creads, 0);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+	isc__netmgr_shutdown(connect_nm);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	atomic_assert_int_eq(cconnects, 1);
+	atomic_assert_int_eq(csends, 1);
+	atomic_assert_int_eq(creads, 0);
+	atomic_assert_int_eq(sreads, 1);
+	atomic_assert_int_eq(ssends, 0);
+}
+
+static void
+tcpdns_recv_two(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+
+	atomic_store(&nsends, 2);
+
+	result = isc_nm_listentcpdns(listen_nm, &tcp_listen_addr,
+				     listen_read_cb, NULL, listen_accept_cb,
+				     NULL, 0, 0, NULL, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_tcpdnsconnect(connect_nm, &tcp_connect_addr, &tcp_listen_addr,
+			     connect_connect_cb, NULL, T_CONNECT, 0);
+
+	WAIT_FOR_EQ(cconnects, 1);
+
+	isc_refcount_increment0(&active_cconnects);
+	isc_nm_tcpdnsconnect(connect_nm, &tcp_connect_addr, &tcp_listen_addr,
+			     connect_connect_cb, NULL, T_CONNECT, 0);
+
+	WAIT_FOR_EQ(cconnects, 2);
+
+	WAIT_FOR_LE(nsends, 0);
+	WAIT_FOR_EQ(csends, 2);
+	WAIT_FOR_EQ(sreads, 2);
+	WAIT_FOR_EQ(ssends, 1);
+	WAIT_FOR_EQ(creads, 1);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+	isc__netmgr_shutdown(connect_nm);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	atomic_assert_int_eq(cconnects, 2);
+	atomic_assert_int_eq(csends, 2);
+	atomic_assert_int_eq(creads, 1);
+	atomic_assert_int_eq(sreads, 2);
+	atomic_assert_int_eq(ssends, 1);
+}
+
+static void
+tcpdns_recv_send(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_thread_t threads[workers];
+
+	SKIP_IN_CI;
+
+	result = isc_nm_listentcpdns(listen_nm, &tcp_listen_addr,
+				     listen_read_cb, NULL, listen_accept_cb,
+				     NULL, 0, 0, NULL, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(threads, 0, sizeof(threads));
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_create(connect_thread, tcpdns_connect, &threads[i]);
+	}
+
+	WAIT_FOR_GE(cconnects, esends);
+	WAIT_FOR_GE(csends, esends);
+	WAIT_FOR_GE(sreads, esends);
+	WAIT_FOR_GE(ssends, esends / 2);
+	WAIT_FOR_GE(creads, esends / 2);
+
+	DONE();
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	isc__netmgr_shutdown(connect_nm);
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	CHECK_RANGE_FULL(csends);
+	CHECK_RANGE_FULL(creads);
+	CHECK_RANGE_FULL(sreads);
+	CHECK_RANGE_FULL(ssends);
+}
+
+static void
+tcpdns_recv_half_send(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_thread_t threads[workers];
+
+	SKIP_IN_CI;
+
+	result = isc_nm_listentcpdns(listen_nm, &tcp_listen_addr,
+				     listen_read_cb, NULL, listen_accept_cb,
+				     NULL, 0, 0, NULL, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(threads, 0, sizeof(threads));
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_create(connect_thread, tcpdns_connect, &threads[i]);
+	}
+
+	WAIT_FOR_GE(cconnects, esends / 2);
+	WAIT_FOR_GE(csends, esends / 2);
+	WAIT_FOR_GE(sreads, esends / 2);
+	WAIT_FOR_GE(ssends, esends / 2);
+	WAIT_FOR_GE(creads, esends / 2);
+
+	isc__netmgr_shutdown(connect_nm);
+
+	DONE();
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	CHECK_RANGE_HALF(csends);
+	CHECK_RANGE_HALF(creads);
+	CHECK_RANGE_HALF(sreads);
+	CHECK_RANGE_HALF(ssends);
+}
+
+static void
+tcpdns_half_recv_send(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_thread_t threads[workers];
+
+	SKIP_IN_CI;
+
+	result = isc_nm_listentcpdns(listen_nm, &tcp_listen_addr,
+				     listen_read_cb, NULL, listen_accept_cb,
+				     NULL, 0, 0, NULL, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(threads, 0, sizeof(threads));
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_create(connect_thread, tcpdns_connect, &threads[i]);
+	}
+
+	WAIT_FOR_GE(cconnects, esends / 2);
+	WAIT_FOR_GE(csends, esends / 2);
+	WAIT_FOR_GE(sreads, esends / 2);
+	WAIT_FOR_GE(ssends, esends / 2);
+	WAIT_FOR_GE(creads, esends / 2);
+
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	/* Try to send a little while longer */
+	isc_test_nap((esends / 2) * 10000);
+
+	isc__netmgr_shutdown(connect_nm);
+
+	DONE();
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	CHECK_RANGE_HALF(csends);
+	CHECK_RANGE_HALF(creads);
+	CHECK_RANGE_HALF(sreads);
+	CHECK_RANGE_HALF(ssends);
+}
+
+static void
+tcpdns_half_recv_half_send(void **state __attribute__((unused))) {
+	isc_result_t result = ISC_R_SUCCESS;
+	isc_nmsocket_t *listen_sock = NULL;
+	isc_thread_t threads[workers];
+
+	SKIP_IN_CI;
+
+	result = isc_nm_listentcpdns(listen_nm, &tcp_listen_addr,
+				     listen_read_cb, NULL, listen_accept_cb,
+				     NULL, 0, 0, NULL, &listen_sock);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	memset(threads, 0, sizeof(threads));
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_create(connect_thread, tcpdns_connect, &threads[i]);
+	}
+
+	WAIT_FOR_GE(cconnects, esends / 2);
+	WAIT_FOR_GE(csends, esends / 2);
+	WAIT_FOR_GE(sreads, esends / 2);
+	WAIT_FOR_GE(ssends, esends / 2);
+	WAIT_FOR_GE(creads, esends / 2);
+
+	isc__netmgr_shutdown(connect_nm);
+	isc_nm_stoplistening(listen_sock);
+	isc_nmsocket_close(&listen_sock);
+	assert_null(listen_sock);
+
+	DONE();
+	for (size_t i = 0; i < workers; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	X(cconnects);
+	X(csends);
+	X(creads);
+	X(sreads);
+	X(ssends);
+
+	CHECK_RANGE_HALF(csends);
+	CHECK_RANGE_HALF(creads);
+	CHECK_RANGE_HALF(sreads);
+	CHECK_RANGE_HALF(ssends);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		/* UDP */
+		cmocka_unit_test_setup_teardown(mock_listenudp_uv_udp_open,
+						nm_setup, nm_teardown),
+		cmocka_unit_test_setup_teardown(mock_listenudp_uv_udp_bind,
+						nm_setup, nm_teardown),
+		cmocka_unit_test_setup_teardown(
+			mock_listenudp_uv_udp_recv_start, nm_setup,
+			nm_teardown),
+		cmocka_unit_test_setup_teardown(mock_udpconnect_uv_udp_open,
+						nm_setup, nm_teardown),
+		cmocka_unit_test_setup_teardown(mock_udpconnect_uv_udp_bind,
+						nm_setup, nm_teardown),
+#if UV_VERSION_HEX >= UV_VERSION(1, 27, 0)
+		cmocka_unit_test_setup_teardown(mock_udpconnect_uv_udp_connect,
+						nm_setup, nm_teardown),
+#endif
+		cmocka_unit_test_setup_teardown(
+			mock_udpconnect_uv_recv_buffer_size, nm_setup,
+			nm_teardown),
+		cmocka_unit_test_setup_teardown(
+			mock_udpconnect_uv_send_buffer_size, nm_setup,
+			nm_teardown),
+		cmocka_unit_test_setup_teardown(udp_noop, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(udp_noresponse, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(udp_timeout_recovery, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(udp_recv_one, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(udp_recv_two, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(udp_recv_send, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(udp_recv_half_send, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(udp_half_recv_send, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(udp_half_recv_half_send,
+						nm_setup, nm_teardown),
+
+		/* TCP */
+		cmocka_unit_test_setup_teardown(tcp_noop, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_noresponse, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_timeout_recovery, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_recv_one, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_recv_two, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_recv_send, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_recv_half_send, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_half_recv_send, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_half_recv_half_send,
+						nm_setup, nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_recv_send_sendback,
+						nm_setup, nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_recv_half_send_sendback,
+						nm_setup, nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_half_recv_send_sendback,
+						nm_setup, nm_teardown),
+		cmocka_unit_test_setup_teardown(
+			tcp_half_recv_half_send_sendback, nm_setup,
+			nm_teardown),
+
+		/* TCP Quota */
+		cmocka_unit_test_setup_teardown(tcp_recv_one_quota, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_recv_two_quota, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_recv_send_quota, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_recv_half_send_quota,
+						nm_setup, nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_half_recv_send_quota,
+						nm_setup, nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_half_recv_half_send_quota,
+						nm_setup, nm_teardown),
+		cmocka_unit_test_setup_teardown(tcp_recv_send_quota_sendback,
+						nm_setup, nm_teardown),
+		cmocka_unit_test_setup_teardown(
+			tcp_recv_half_send_quota_sendback, nm_setup,
+			nm_teardown),
+		cmocka_unit_test_setup_teardown(
+			tcp_half_recv_send_quota_sendback, nm_setup,
+			nm_teardown),
+		cmocka_unit_test_setup_teardown(
+			tcp_half_recv_half_send_quota_sendback, nm_setup,
+			nm_teardown),
+
+		/* TCPDNS */
+		cmocka_unit_test_setup_teardown(tcpdns_recv_one, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcpdns_recv_two, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcpdns_noop, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcpdns_noresponse, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcpdns_timeout_recovery,
+						nm_setup, nm_teardown),
+		cmocka_unit_test_setup_teardown(tcpdns_recv_send, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcpdns_recv_half_send, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcpdns_half_recv_send, nm_setup,
+						nm_teardown),
+		cmocka_unit_test_setup_teardown(tcpdns_half_recv_half_send,
+						nm_setup, nm_teardown),
+
+	};
+
+	return (cmocka_run_group_tests(tests, _setup, _teardown));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/parse_test.c b/lib/isc/tests/parse_test.c
new file mode 100644
index 0000000..378690d
--- /dev/null
+++ b/lib/isc/tests/parse_test.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#if HAVE_CMOCKA
+
+#include <inttypes.h>
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/parseint.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+/* Test for 32 bit overflow on 64 bit machines in isc_parse_uint32 */
+static void
+parse_overflow(void **state) {
+	isc_result_t result;
+	uint32_t output;
+
+	UNUSED(state);
+
+	result = isc_parse_uint32(&output, "1234567890", 10);
+	assert_int_equal(ISC_R_SUCCESS, result);
+	assert_int_equal(1234567890, output);
+
+	result = isc_parse_uint32(&output, "123456789012345", 10);
+	assert_int_equal(ISC_R_RANGE, result);
+
+	result = isc_parse_uint32(&output, "12345678901234567890", 10);
+	assert_int_equal(ISC_R_RANGE, result);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test_setup_teardown(parse_overflow, _setup,
+						_teardown),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/pool_test.c b/lib/isc/tests/pool_test.c
new file mode 100644
index 0000000..1ce51f6
--- /dev/null
+++ b/lib/isc/tests/pool_test.c
@@ -0,0 +1,194 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/mem.h>
+#include <isc/pool.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+static isc_result_t
+poolinit(void **target, void *arg) {
+	isc_result_t result;
+
+	isc_taskmgr_t *mgr = (isc_taskmgr_t *)arg;
+	isc_task_t *task = NULL;
+	result = isc_task_create(mgr, 0, &task);
+	if (result != ISC_R_SUCCESS) {
+		return (result);
+	}
+
+	*target = (void *)task;
+	return (ISC_R_SUCCESS);
+}
+
+static void
+poolfree(void **target) {
+	isc_task_t *task = *(isc_task_t **)target;
+	isc_task_destroy(&task);
+	*target = NULL;
+}
+
+/* Create a pool */
+static void
+create_pool(void **state) {
+	isc_result_t result;
+	isc_pool_t *pool = NULL;
+
+	UNUSED(state);
+
+	result = isc_pool_create(test_mctx, 8, poolfree, poolinit, taskmgr,
+				 &pool);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_pool_count(pool), 8);
+
+	isc_pool_destroy(&pool);
+	assert_null(pool);
+}
+
+/* Resize a pool */
+static void
+expand_pool(void **state) {
+	isc_result_t result;
+	isc_pool_t *pool1 = NULL, *pool2 = NULL, *hold = NULL;
+
+	UNUSED(state);
+
+	result = isc_pool_create(test_mctx, 10, poolfree, poolinit, taskmgr,
+				 &pool1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_pool_count(pool1), 10);
+
+	/* resizing to a smaller size should have no effect */
+	hold = pool1;
+	result = isc_pool_expand(&pool1, 5, &pool2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_pool_count(pool2), 10);
+	assert_ptr_equal(pool2, hold);
+	assert_null(pool1);
+	pool1 = pool2;
+	pool2 = NULL;
+
+	/* resizing to the same size should have no effect */
+	hold = pool1;
+	result = isc_pool_expand(&pool1, 10, &pool2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_pool_count(pool2), 10);
+	assert_ptr_equal(pool2, hold);
+	assert_null(pool1);
+	pool1 = pool2;
+	pool2 = NULL;
+
+	/* resizing to larger size should make a new pool */
+	hold = pool1;
+	result = isc_pool_expand(&pool1, 20, &pool2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_pool_count(pool2), 20);
+	assert_ptr_not_equal(pool2, hold);
+	assert_null(pool1);
+
+	isc_pool_destroy(&pool2);
+	assert_null(pool2);
+}
+
+/* Get objects */
+static void
+get_objects(void **state) {
+	isc_result_t result;
+	isc_pool_t *pool = NULL;
+	void *item;
+	isc_task_t *task1 = NULL, *task2 = NULL, *task3 = NULL;
+
+	UNUSED(state);
+
+	result = isc_pool_create(test_mctx, 2, poolfree, poolinit, taskmgr,
+				 &pool);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_pool_count(pool), 2);
+
+	item = isc_pool_get(pool);
+	assert_non_null(item);
+	isc_task_attach((isc_task_t *)item, &task1);
+
+	item = isc_pool_get(pool);
+	assert_non_null(item);
+	isc_task_attach((isc_task_t *)item, &task2);
+
+	item = isc_pool_get(pool);
+	assert_non_null(item);
+	isc_task_attach((isc_task_t *)item, &task3);
+
+	isc_task_detach(&task1);
+	isc_task_detach(&task2);
+	isc_task_detach(&task3);
+
+	isc_pool_destroy(&pool);
+	assert_null(pool);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test_setup_teardown(create_pool, _setup, _teardown),
+		cmocka_unit_test_setup_teardown(expand_pool, _setup, _teardown),
+		cmocka_unit_test_setup_teardown(get_objects, _setup, _teardown),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/quota_test.c b/lib/isc/tests/quota_test.c
new file mode 100644
index 0000000..854afd9
--- /dev/null
+++ b/lib/isc/tests/quota_test.c
@@ -0,0 +1,358 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/quota.h>
+#include <isc/result.h>
+#include <isc/thread.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+static void
+isc_quota_get_set_test(void **state) {
+	UNUSED(state);
+	isc_quota_t quota;
+	isc_quota_t *quota2 = NULL;
+	isc_quota_init(&quota, 100);
+
+	assert_int_equal(isc_quota_getmax(&quota), 100);
+	assert_int_equal(isc_quota_getsoft(&quota), 0);
+
+	isc_quota_max(&quota, 50);
+	isc_quota_soft(&quota, 30);
+
+	assert_int_equal(isc_quota_getmax(&quota), 50);
+	assert_int_equal(isc_quota_getsoft(&quota), 30);
+
+	assert_int_equal(isc_quota_getused(&quota), 0);
+	isc_quota_attach(&quota, &quota2);
+	assert_int_equal(isc_quota_getused(&quota), 1);
+	isc_quota_detach(&quota2);
+	assert_int_equal(isc_quota_getused(&quota), 0);
+	isc_quota_destroy(&quota);
+}
+
+static void
+add_quota(isc_quota_t *source, isc_quota_t **target,
+	  isc_result_t expected_result, int expected_used) {
+	isc_result_t result;
+
+	*target = NULL;
+
+	result = isc_quota_attach(source, target);
+	assert_int_equal(result, expected_result);
+
+	switch (expected_result) {
+	case ISC_R_SUCCESS:
+	case ISC_R_SOFTQUOTA:
+		assert_ptr_equal(*target, source);
+		break;
+	default:
+		assert_null(*target);
+		break;
+	}
+
+	assert_int_equal(isc_quota_getused(source), expected_used);
+}
+
+static void
+isc_quota_hard_test(void **state) {
+	isc_quota_t quota;
+	isc_quota_t *quotas[110];
+	int i;
+	UNUSED(state);
+
+	isc_quota_init(&quota, 100);
+
+	for (i = 0; i < 100; i++) {
+		add_quota(&quota, &quotas[i], ISC_R_SUCCESS, i + 1);
+	}
+
+	add_quota(&quota, &quotas[100], ISC_R_QUOTA, 100);
+
+	assert_int_equal(isc_quota_getused(&quota), 100);
+
+	isc_quota_detach(&quotas[0]);
+	assert_null(quotas[0]);
+
+	add_quota(&quota, &quotas[100], ISC_R_SUCCESS, 100);
+	add_quota(&quota, &quotas[101], ISC_R_QUOTA, 100);
+
+	for (i = 100; i > 0; i--) {
+		isc_quota_detach(&quotas[i]);
+		assert_null(quotas[i]);
+		assert_int_equal(isc_quota_getused(&quota), i - 1);
+	}
+	assert_int_equal(isc_quota_getused(&quota), 0);
+	isc_quota_destroy(&quota);
+}
+
+static void
+isc_quota_soft_test(void **state) {
+	isc_quota_t quota;
+	isc_quota_t *quotas[110];
+	int i;
+	UNUSED(state);
+
+	isc_quota_init(&quota, 100);
+	isc_quota_soft(&quota, 50);
+
+	for (i = 0; i < 50; i++) {
+		add_quota(&quota, &quotas[i], ISC_R_SUCCESS, i + 1);
+	}
+	for (i = 50; i < 100; i++) {
+		add_quota(&quota, &quotas[i], ISC_R_SOFTQUOTA, i + 1);
+	}
+
+	add_quota(&quota, &quotas[i], ISC_R_QUOTA, 100);
+
+	for (i = 99; i >= 0; i--) {
+		isc_quota_detach(&quotas[i]);
+		assert_null(quotas[i]);
+		assert_int_equal(isc_quota_getused(&quota), i);
+	}
+	assert_int_equal(isc_quota_getused(&quota), 0);
+	isc_quota_destroy(&quota);
+}
+
+static atomic_uint_fast32_t cb_calls = 0;
+static isc_quota_cb_t cbs[30];
+static isc_quota_t *qp;
+
+static void
+callback(isc_quota_t *quota, void *data) {
+	int val = *(int *)data;
+	/* Callback is not called if we get the quota directly */
+	assert_int_not_equal(val, -1);
+
+	/* We get the proper quota pointer */
+	assert_ptr_equal(quota, qp);
+
+	/* Verify that the callbacks are called in order */
+	int v = atomic_fetch_add_relaxed(&cb_calls, 1);
+	assert_int_equal(v, val);
+
+	/*
+	 * First 5 will be detached by the test function,
+	 * for the last 5 - do a 'chain detach'.
+	 */
+	if (v >= 5) {
+		isc_quota_detach(&quota);
+	}
+}
+
+static void
+isc_quota_callback_test(void **state) {
+	isc_result_t result;
+	isc_quota_t quota;
+	isc_quota_t *quotas[30];
+	qp = &quota;
+	/*
+	 * - 10 calls that end with SUCCESS
+	 * - 10 calls that end with SOFTQUOTA
+	 * - 10 callbacks
+	 */
+	int ints[] = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+		       -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+		       0,  1,  2,  3,  4,  5,  6,  7,  8,  9 };
+	int i;
+	UNUSED(state);
+
+	isc_quota_init(&quota, 20);
+	isc_quota_soft(&quota, 10);
+
+	for (i = 0; i < 10; i++) {
+		quotas[i] = NULL;
+		isc_quota_cb_init(&cbs[i], callback, &ints[i]);
+		result = isc_quota_attach_cb(&quota, &quotas[i], &cbs[i]);
+		assert_int_equal(result, ISC_R_SUCCESS);
+		assert_ptr_equal(quotas[i], &quota);
+		assert_int_equal(isc_quota_getused(&quota), i + 1);
+	}
+	for (i = 10; i < 20; i++) {
+		quotas[i] = NULL;
+		isc_quota_cb_init(&cbs[i], callback, &ints[i]);
+		result = isc_quota_attach_cb(&quota, &quotas[i], &cbs[i]);
+		assert_int_equal(result, ISC_R_SOFTQUOTA);
+		assert_ptr_equal(quotas[i], &quota);
+		assert_int_equal(isc_quota_getused(&quota), i + 1);
+	}
+
+	for (i = 20; i < 30; i++) {
+		quotas[i] = NULL;
+		isc_quota_cb_init(&cbs[i], callback, &ints[i]);
+		result = isc_quota_attach_cb(&quota, &quotas[i], &cbs[i]);
+		assert_int_equal(result, ISC_R_QUOTA);
+		assert_ptr_equal(quotas[i], NULL);
+		assert_int_equal(isc_quota_getused(&quota), 20);
+	}
+	assert_int_equal(atomic_load(&cb_calls), 0);
+
+	for (i = 0; i < 5; i++) {
+		isc_quota_detach(&quotas[i]);
+		assert_null(quotas[i]);
+		assert_int_equal(isc_quota_getused(&quota), 20);
+		assert_int_equal(atomic_load(&cb_calls), i + 1);
+	}
+	/* That should cause a chain reaction */
+	isc_quota_detach(&quotas[5]);
+	assert_int_equal(atomic_load(&cb_calls), 10);
+
+	/* Release the quotas that we did not released in the callback */
+	for (i = 0; i < 5; i++) {
+		qp = &quota;
+		isc_quota_detach(&qp);
+	}
+
+	for (i = 6; i < 20; i++) {
+		isc_quota_detach(&quotas[i]);
+		assert_null(quotas[i]);
+		assert_int_equal(isc_quota_getused(&quota), 19 - i);
+	}
+	assert_int_equal(atomic_load(&cb_calls), 10);
+
+	assert_int_equal(isc_quota_getused(&quota), 0);
+	isc_quota_destroy(&quota);
+}
+
+/*
+ * Multithreaded quota callback test:
+ * - quota set to 100
+ * - 10 threads, each trying to get 100 quotas.
+ * - creates a separate thread to release it after 10ms
+ */
+
+typedef struct qthreadinfo {
+	atomic_uint_fast32_t direct;
+	atomic_uint_fast32_t callback;
+	isc_quota_t *quota;
+	isc_quota_cb_t callbacks[100];
+} qthreadinfo_t;
+
+static atomic_uint_fast32_t g_tnum = 0;
+/* at most 10 * 100 quota_detach threads */
+isc_thread_t g_threads[10 * 100];
+
+static void *
+quota_detach(void *quotap) {
+	isc_quota_t *quota = (isc_quota_t *)quotap;
+	isc_test_nap(10000);
+	isc_quota_detach(&quota);
+	return ((isc_threadresult_t)0);
+}
+
+static void
+quota_callback(isc_quota_t *quota, void *data) {
+	qthreadinfo_t *qti = (qthreadinfo_t *)data;
+	atomic_fetch_add_relaxed(&qti->callback, 1);
+	int tnum = atomic_fetch_add_relaxed(&g_tnum, 1);
+	isc_thread_create(quota_detach, quota, &g_threads[tnum]);
+}
+
+static isc_threadresult_t
+quota_thread(void *qtip) {
+	qthreadinfo_t *qti = (qthreadinfo_t *)qtip;
+	for (int i = 0; i < 100; i++) {
+		isc_quota_cb_init(&qti->callbacks[i], quota_callback, qti);
+		isc_quota_t *quota = NULL;
+		isc_result_t result = isc_quota_attach_cb(qti->quota, &quota,
+							  &qti->callbacks[i]);
+		if (result == ISC_R_SUCCESS) {
+			atomic_fetch_add_relaxed(&qti->direct, 1);
+			int tnum = atomic_fetch_add_relaxed(&g_tnum, 1);
+			isc_thread_create(quota_detach, quota,
+					  &g_threads[tnum]);
+		}
+	}
+	return ((isc_threadresult_t)0);
+}
+
+static void
+isc_quota_callback_mt_test(void **state) {
+	UNUSED(state);
+	isc_quota_t quota;
+	int i;
+
+	isc_quota_init(&quota, 100);
+	static qthreadinfo_t qtis[10];
+	isc_thread_t threads[10];
+	for (i = 0; i < 10; i++) {
+		atomic_init(&qtis[i].direct, 0);
+		atomic_init(&qtis[i].callback, 0);
+		qtis[i].quota = &quota;
+		isc_thread_create(quota_thread, &qtis[i], &threads[i]);
+	}
+	for (i = 0; i < 10; i++) {
+		isc_thread_join(threads[i], NULL);
+	}
+
+	for (i = 0; i < (int)atomic_load(&g_tnum); i++) {
+		isc_thread_join(g_threads[i], NULL);
+	}
+	int direct = 0, callback = 0;
+
+	for (i = 0; i < 10; i++) {
+		direct += atomic_load(&qtis[i].direct);
+		callback += atomic_load(&qtis[i].callback);
+	}
+	/* Total quota gained must be 10 threads * 100 tries */
+	assert_int_equal(direct + callback, 10 * 100);
+	/*
+	 * At least 100 must be direct, the rest is virtually random:
+	 * - in a regular run I'm constantly getting 100:900 ratio
+	 * - under rr - usually around ~120:880
+	 * - under rr -h - 1000:0
+	 */
+	assert_true(direct >= 100);
+
+	isc_quota_destroy(&quota);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(isc_quota_get_set_test),
+		cmocka_unit_test(isc_quota_hard_test),
+		cmocka_unit_test(isc_quota_soft_test),
+		cmocka_unit_test(isc_quota_callback_test),
+		cmocka_unit_test(isc_quota_callback_mt_test),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/radix_test.c b/lib/isc/tests/radix_test.c
new file mode 100644
index 0000000..132b64d
--- /dev/null
+++ b/lib/isc/tests/radix_test.c
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/mem.h>
+#include <isc/netaddr.h>
+#include <isc/radix.h>
+#include <isc/result.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+/* test radix searching */
+static void
+isc_radix_search_test(void **state) {
+	isc_radix_tree_t *radix = NULL;
+	isc_radix_node_t *node;
+	isc_prefix_t prefix;
+	isc_result_t result;
+	struct in_addr in_addr;
+	isc_netaddr_t netaddr;
+
+	UNUSED(state);
+
+	result = isc_radix_create(test_mctx, &radix, 32);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	in_addr.s_addr = inet_addr("3.3.3.0");
+	isc_netaddr_fromin(&netaddr, &in_addr);
+	NETADDR_TO_PREFIX_T(&netaddr, prefix, 24);
+
+	node = NULL;
+	result = isc_radix_insert(radix, &node, NULL, &prefix);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	node->data[0] = (void *)1;
+	isc_refcount_destroy(&prefix.refcount);
+
+	in_addr.s_addr = inet_addr("3.3.0.0");
+	isc_netaddr_fromin(&netaddr, &in_addr);
+	NETADDR_TO_PREFIX_T(&netaddr, prefix, 16);
+
+	node = NULL;
+	result = isc_radix_insert(radix, &node, NULL, &prefix);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	node->data[0] = (void *)2;
+	isc_refcount_destroy(&prefix.refcount);
+
+	in_addr.s_addr = inet_addr("3.3.3.3");
+	isc_netaddr_fromin(&netaddr, &in_addr);
+	NETADDR_TO_PREFIX_T(&netaddr, prefix, 22);
+
+	node = NULL;
+	result = isc_radix_search(radix, &node, &prefix);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_ptr_equal(node->data[0], (void *)2);
+
+	isc_refcount_destroy(&prefix.refcount);
+
+	isc_radix_destroy(radix, NULL);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test_setup_teardown(isc_radix_search_test, _setup,
+						_teardown),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/random_test.c b/lib/isc/tests/random_test.c
new file mode 100644
index 0000000..8025583
--- /dev/null
+++ b/lib/isc/tests/random_test.c
@@ -0,0 +1,894 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*
+ * IMPORTANT NOTE:
+ * These tests work by generating a large number of pseudo-random numbers
+ * and then statistically analyzing them to determine whether they seem
+ * random. The test is expected to fail on occasion by random happenstance.
+ */
+
+#if HAVE_CMOCKA
+
+#include <inttypes.h>
+#include <math.h>
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/commandline.h>
+#include <isc/mem.h>
+#include <isc/nonce.h>
+#include <isc/print.h>
+#include <isc/random.h>
+#include <isc/result.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+#define REPS 25000
+
+typedef double(pvalue_func_t)(isc_mem_t *mctx, uint16_t *values, size_t length);
+
+/* igamc(), igam(), etc. were adapted (and cleaned up) from the Cephes
+ * math library:
+ *
+ * Cephes Math Library Release 2.8:  June, 2000
+ * Copyright 1985, 1987, 2000 by Stephen L. Moshier
+ *
+ * The Cephes math library was released into the public domain as part
+ * of netlib.
+ */
+
+static double MACHEP = 1.11022302462515654042E-16;
+static double MAXLOG = 7.09782712893383996843E2;
+static double big = 4.503599627370496e15;
+static double biginv = 2.22044604925031308085e-16;
+
+static double
+igamc(double a, double x);
+static double
+igam(double a, double x);
+
+/* Set to true (or use -v option) for verbose output */
+static bool verbose = false;
+
+typedef enum {
+	ISC_RANDOM8,
+	ISC_RANDOM16,
+	ISC_RANDOM32,
+	ISC_RANDOM_BYTES,
+	ISC_RANDOM_UNIFORM,
+	ISC_NONCE_BYTES
+} isc_random_func;
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+static double
+igamc(double a, double x) {
+	double ans, ax, c, yc, r, t, y, z;
+	double pk, pkm1, pkm2, qk, qkm1, qkm2;
+
+	if ((x <= 0) || (a <= 0)) {
+		return (1.0);
+	}
+
+	if ((x < 1.0) || (x < a)) {
+		return (1.0 - igam(a, x));
+	}
+
+	ax = a * log(x) - x - lgamma(a);
+	if (ax < -MAXLOG) {
+		print_error("# igamc: UNDERFLOW, ax=%f\n", ax);
+		return (0.0);
+	}
+	ax = exp(ax);
+
+	/* continued fraction */
+	y = 1.0 - a;
+	z = x + y + 1.0;
+	c = 0.0;
+	pkm2 = 1.0;
+	qkm2 = x;
+	pkm1 = x + 1.0;
+	qkm1 = z * x;
+	ans = pkm1 / qkm1;
+
+	do {
+		c += 1.0;
+		y += 1.0;
+		z += 2.0;
+		yc = y * c;
+		pk = pkm1 * z - pkm2 * yc;
+		qk = qkm1 * z - qkm2 * yc;
+		if (qk != 0) {
+			r = pk / qk;
+			t = fabs((ans - r) / r);
+			ans = r;
+		} else {
+			t = 1.0;
+		}
+
+		pkm2 = pkm1;
+		pkm1 = pk;
+		qkm2 = qkm1;
+		qkm1 = qk;
+
+		if (fabs(pk) > big) {
+			pkm2 *= biginv;
+			pkm1 *= biginv;
+			qkm2 *= biginv;
+			qkm1 *= biginv;
+		}
+	} while (t > MACHEP);
+
+	return (ans * ax);
+}
+
+static double
+igam(double a, double x) {
+	double ans, ax, c, r;
+
+	if ((x <= 0) || (a <= 0)) {
+		return (0.0);
+	}
+
+	if ((x > 1.0) && (x > a)) {
+		return (1.0 - igamc(a, x));
+	}
+
+	/* Compute  x**a * exp(-x) / md_gamma(a)  */
+	ax = a * log(x) - x - lgamma(a);
+	if (ax < -MAXLOG) {
+		print_error("# igam: UNDERFLOW, ax=%f\n", ax);
+		return (0.0);
+	}
+	ax = exp(ax);
+
+	/* power series */
+	r = a;
+	c = 1.0;
+	ans = 1.0;
+
+	do {
+		r += 1.0;
+		c *= x / r;
+		ans += c;
+	} while (c / ans > MACHEP);
+
+	return (ans * ax / a);
+}
+
+static int8_t scounts_table[65536];
+static uint8_t bitcounts_table[65536];
+
+static int8_t
+scount_calculate(uint16_t n) {
+	int i;
+	int8_t sc;
+
+	sc = 0;
+	for (i = 0; i < 16; i++) {
+		uint16_t lsb;
+
+		lsb = n & 1;
+		if (lsb != 0) {
+			sc += 1;
+		} else {
+			sc -= 1;
+		}
+
+		n >>= 1;
+	}
+
+	return (sc);
+}
+
+static uint8_t
+bitcount_calculate(uint16_t n) {
+	int i;
+	uint8_t bc;
+
+	bc = 0;
+	for (i = 0; i < 16; i++) {
+		uint16_t lsb;
+
+		lsb = n & 1;
+		if (lsb != 0) {
+			bc += 1;
+		}
+
+		n >>= 1;
+	}
+
+	return (bc);
+}
+
+static void
+tables_init(void) {
+	uint32_t i;
+
+	for (i = 0; i < 65536; i++) {
+		scounts_table[i] = scount_calculate(i);
+		bitcounts_table[i] = bitcount_calculate(i);
+	}
+}
+
+/*
+ * The following code for computing Marsaglia's rank is based on the
+ * implementation in cdbinrnk.c from the diehard tests by George
+ * Marsaglia.
+ *
+ * This function destroys (modifies) the data passed in bits.
+ */
+static uint32_t
+matrix_binaryrank(uint32_t *bits, size_t rows, size_t cols) {
+	size_t i, j, k;
+	unsigned int rt = 0;
+	uint32_t rank = 0;
+	uint32_t tmp;
+
+	for (k = 0; k < rows; k++) {
+		i = k;
+
+		while (rt >= cols || ((bits[i] >> rt) & 1) == 0) {
+			i++;
+
+			if (i < rows) {
+				continue;
+			} else {
+				rt++;
+				if (rt < cols) {
+					i = k;
+					continue;
+				}
+			}
+
+			return (rank);
+		}
+
+		rank++;
+		if (i != k) {
+			tmp = bits[i];
+			bits[i] = bits[k];
+			bits[k] = tmp;
+		}
+
+		for (j = i + 1; j < rows; j++) {
+			if (((bits[j] >> rt) & 1) == 0) {
+				continue;
+			} else {
+				bits[j] ^= bits[k];
+			}
+		}
+
+		rt++;
+	}
+
+	return (rank);
+}
+
+static void
+random_test(pvalue_func_t *func, isc_random_func test_func) {
+	uint32_t m;
+	uint32_t j;
+	uint32_t histogram[11] = { 0 };
+	uint32_t passed;
+	double proportion;
+	double p_hat;
+	double lower_confidence, higher_confidence;
+	double chi_square;
+	double p_value_t;
+	double alpha;
+
+	tables_init();
+
+	m = 1000;
+	passed = 0;
+
+	for (j = 0; j < m; j++) {
+		uint32_t i;
+		uint32_t values[REPS];
+		uint16_t *uniform_values;
+		double p_value;
+
+		switch (test_func) {
+		case ISC_RANDOM8:
+			for (i = 0; i < (sizeof(values) / sizeof(*values)); i++)
+			{
+				values[i] = isc_random8();
+			}
+			break;
+		case ISC_RANDOM16:
+			for (i = 0; i < (sizeof(values) / sizeof(*values)); i++)
+			{
+				values[i] = isc_random16();
+			}
+			break;
+		case ISC_RANDOM32:
+			for (i = 0; i < (sizeof(values) / sizeof(*values)); i++)
+			{
+				values[i] = isc_random32();
+			}
+			break;
+		case ISC_RANDOM_BYTES:
+			isc_random_buf(values, sizeof(values));
+			break;
+		case ISC_RANDOM_UNIFORM:
+			uniform_values = (uint16_t *)values;
+			for (i = 0;
+			     i < (sizeof(values) / (sizeof(*uniform_values)));
+			     i++)
+			{
+				uniform_values[i] =
+					isc_random_uniform(UINT16_MAX);
+			}
+			break;
+		case ISC_NONCE_BYTES:
+			isc_nonce_buf(values, sizeof(values));
+			break;
+		}
+
+		p_value = (*func)(test_mctx, (uint16_t *)values, REPS * 2);
+		if (p_value >= 0.01) {
+			passed++;
+		}
+
+		assert_in_range(p_value, 0.0, 1.0);
+
+		i = (int)floor(p_value * 10);
+		histogram[i]++;
+	}
+
+	/*
+	 * Check proportion of sequences passing a test (see section
+	 * 4.2.1 in NIST SP 800-22).
+	 */
+	alpha = 0.01; /* the significance level */
+	proportion = (double)passed / (double)m;
+	p_hat = 1.0 - alpha;
+	lower_confidence = p_hat - (3.0 * sqrt((p_hat * (1.0 - p_hat)) / m));
+	higher_confidence = p_hat + (3.0 * sqrt((p_hat * (1.0 - p_hat)) / m));
+
+	if (verbose) {
+		print_message("# passed=%u/1000\n", passed);
+		print_message("# higher_confidence=%f, lower_confidence=%f, "
+			      "proportion=%f\n",
+			      higher_confidence, lower_confidence, proportion);
+	}
+
+	assert_in_range(proportion, lower_confidence, higher_confidence);
+
+	/*
+	 * Check uniform distribution of p-values (see section 4.2.2 in
+	 * NIST SP 800-22).
+	 */
+
+	/* Fold histogram[10] (p_value = 1.0) into histogram[9] for
+	 * interval [0.9, 1.0]
+	 */
+	histogram[9] += histogram[10];
+	histogram[10] = 0;
+
+	/* Pre-requisite that at least 55 sequences are processed. */
+	assert_true(m >= 55);
+
+	if (verbose) {
+		print_message("# ");
+	}
+
+	chi_square = 0.0;
+	for (j = 0; j < 10; j++) {
+		double numer;
+		double denom;
+
+		if (verbose) {
+			print_message("hist%u=%u ", j, histogram[j]);
+		}
+
+		numer = (histogram[j] - (m / 10.0)) *
+			(histogram[j] - (m / 10.0));
+		denom = m / 10.0;
+		chi_square += numer / denom;
+	}
+
+	if (verbose) {
+		print_message("\n");
+	}
+
+	p_value_t = igamc(9 / 2.0, chi_square / 2.0);
+
+	assert_true(p_value_t >= 0.0001);
+}
+
+/*
+ * This is a frequency (monobits) test taken from the NIST SP 800-22
+ * RANDOM test suite.
+ */
+static double
+monobit(isc_mem_t *mctx, uint16_t *values, size_t length) {
+	size_t i;
+	int32_t scount;
+	uint32_t numbits;
+	double s_obs;
+	double p_value;
+
+	UNUSED(mctx);
+
+	numbits = length * sizeof(*values) * 8;
+	scount = 0;
+
+	for (i = 0; i < length; i++) {
+		scount += scounts_table[values[i]];
+	}
+
+	/* Preconditions (section 2.1.7 in NIST SP 800-22) */
+	assert_true(numbits >= 100);
+
+	if (verbose) {
+		print_message("# numbits=%u, scount=%d\n", numbits, scount);
+	}
+
+	s_obs = abs(scount) / sqrt(numbits);
+	p_value = erfc(s_obs / sqrt(2.0));
+
+	return (p_value);
+}
+
+/*
+ * This is the runs test taken from the NIST SP 800-22 RNG test suite.
+ */
+static double
+runs(isc_mem_t *mctx, uint16_t *values, size_t length) {
+	size_t i;
+	uint32_t bcount;
+	uint32_t numbits;
+	double pi;
+	double tau;
+	uint32_t j;
+	uint32_t b;
+	uint8_t bit_this;
+	uint8_t bit_prev;
+	uint32_t v_obs;
+	double numer;
+	double denom;
+	double p_value;
+
+	UNUSED(mctx);
+
+	numbits = length * sizeof(*values) * 8;
+	bcount = 0;
+
+	for (i = 0; i < length; i++) {
+		bcount += bitcounts_table[values[i]];
+	}
+
+	if (verbose) {
+		print_message("# numbits=%u, bcount=%u\n", numbits, bcount);
+	}
+
+	pi = (double)bcount / (double)numbits;
+	tau = 2.0 / sqrt(numbits);
+
+	/* Preconditions (section 2.3.7 in NIST SP 800-22) */
+	assert_true(numbits >= 100);
+
+	/*
+	 * Pre-condition implied from the monobit test. This can fail
+	 * for some sequences, and the p-value is taken as 0 in these
+	 * cases.
+	 */
+	if (fabs(pi - 0.5) >= tau) {
+		return (0.0);
+	}
+
+	/* Compute v_obs */
+	j = 0;
+	b = 14;
+	bit_prev = (values[j] & (1U << 15)) == 0 ? 0 : 1;
+
+	v_obs = 0;
+
+	for (i = 1; i < numbits; i++) {
+		bit_this = (values[j] & (1U << b)) == 0 ? 0 : 1;
+		if (b == 0) {
+			b = 15;
+			j++;
+		} else {
+			b--;
+		}
+
+		v_obs += bit_this ^ bit_prev;
+
+		bit_prev = bit_this;
+	}
+
+	v_obs += 1;
+
+	numer = fabs(v_obs - (2.0 * numbits * pi * (1.0 - pi)));
+	denom = 2.0 * sqrt(2.0 * numbits) * pi * (1.0 - pi);
+
+	p_value = erfc(numer / denom);
+
+	return (p_value);
+}
+
+/*
+ * This is the block frequency test taken from the NIST SP 800-22 RNG
+ * test suite.
+ */
+static double
+blockfrequency(isc_mem_t *mctx, uint16_t *values, size_t length) {
+	uint32_t i;
+	uint32_t numbits;
+	uint32_t mbits;
+	uint32_t mwords;
+	uint32_t numblocks;
+	double *pi;
+	double chi_square;
+	double p_value;
+
+	numbits = length * sizeof(*values) * 8;
+	mbits = 32000;
+	mwords = mbits / 16;
+	numblocks = numbits / mbits;
+
+	if (verbose) {
+		print_message("# numblocks=%u\n", numblocks);
+	}
+
+	/* Preconditions (section 2.2.7 in NIST SP 800-22) */
+	assert_true(numbits >= 100);
+	assert_true(mbits >= 20);
+	assert_true((double)mbits > (0.01 * numbits));
+	assert_true(numblocks < 100);
+	assert_true(numbits >= (mbits * numblocks));
+
+	pi = isc_mem_get(mctx, numblocks * sizeof(double));
+	assert_non_null(pi);
+
+	for (i = 0; i < numblocks; i++) {
+		uint32_t j;
+		pi[i] = 0.0;
+		for (j = 0; j < mwords; j++) {
+			uint32_t idx;
+
+			idx = i * mwords + j;
+			pi[i] += bitcounts_table[values[idx]];
+		}
+		pi[i] /= mbits;
+	}
+
+	/* Compute chi_square */
+	chi_square = 0.0;
+	for (i = 0; i < numblocks; i++) {
+		chi_square += (pi[i] - 0.5) * (pi[i] - 0.5);
+	}
+
+	chi_square *= 4 * mbits;
+
+	isc_mem_put(mctx, pi, numblocks * sizeof(double));
+
+	if (verbose) {
+		print_message("# chi_square=%f\n", chi_square);
+	}
+
+	p_value = igamc(numblocks * 0.5, chi_square * 0.5);
+
+	return (p_value);
+}
+
+/*
+ * This is the binary matrix rank test taken from the NIST SP 800-22 RNG
+ * test suite.
+ */
+static double
+binarymatrixrank(isc_mem_t *mctx, uint16_t *values, size_t length) {
+	uint32_t i;
+	size_t matrix_m;
+	size_t matrix_q;
+	uint32_t num_matrices;
+	size_t numbits;
+	uint32_t fm_0;
+	uint32_t fm_1;
+	uint32_t fm_rest;
+	double term1;
+	double term2;
+	double term3;
+	double chi_square;
+	double p_value;
+
+	UNUSED(mctx);
+
+	matrix_m = 32;
+	matrix_q = 32;
+	num_matrices = length / ((matrix_m * matrix_q) / 16);
+	numbits = num_matrices * matrix_m * matrix_q;
+
+	/* Preconditions (section 2.5.7 in NIST SP 800-22) */
+	assert_int_equal(matrix_m, 32);
+	assert_int_equal(matrix_q, 32);
+	assert_true(numbits >= (38 * matrix_m * matrix_q));
+
+	fm_0 = 0;
+	fm_1 = 0;
+	fm_rest = 0;
+	for (i = 0; i < num_matrices; i++) {
+		/*
+		 * Each uint32_t supplies 32 bits, so a 32x32 bit matrix
+		 * takes up uint32_t array of size 32.
+		 */
+		uint32_t bits[32];
+		int j;
+		uint32_t rank;
+
+		for (j = 0; j < 32; j++) {
+			size_t idx;
+			uint32_t r1;
+			uint32_t r2;
+
+			idx = i * ((matrix_m * matrix_q) / 16);
+			idx += j * 2;
+
+			r1 = values[idx];
+			r2 = values[idx + 1];
+			bits[j] = (r1 << 16) | r2;
+		}
+
+		rank = matrix_binaryrank(bits, matrix_m, matrix_q);
+
+		if (rank == matrix_m) {
+			fm_0++;
+		} else if (rank == (matrix_m - 1)) {
+			fm_1++;
+		} else {
+			fm_rest++;
+		}
+	}
+
+	/* Compute chi_square */
+	term1 = ((fm_0 - (0.2888 * num_matrices)) *
+		 (fm_0 - (0.2888 * num_matrices))) /
+		(0.2888 * num_matrices);
+	term2 = ((fm_1 - (0.5776 * num_matrices)) *
+		 (fm_1 - (0.5776 * num_matrices))) /
+		(0.5776 * num_matrices);
+	term3 = ((fm_rest - (0.1336 * num_matrices)) *
+		 (fm_rest - (0.1336 * num_matrices))) /
+		(0.1336 * num_matrices);
+
+	chi_square = term1 + term2 + term3;
+
+	if (verbose) {
+		print_message("# fm_0=%u, fm_1=%u, fm_rest=%u, chi_square=%f\n",
+			      fm_0, fm_1, fm_rest, chi_square);
+	}
+
+	p_value = exp(-chi_square * 0.5);
+
+	return (p_value);
+}
+
+/***
+ *** Tests for isc_random32() function
+ ***/
+
+/* Monobit test for the RANDOM */
+static void
+isc_random32_monobit(void **state) {
+	UNUSED(state);
+
+	random_test(monobit, ISC_RANDOM32);
+}
+
+/* Runs test for the RANDOM */
+static void
+isc_random32_runs(void **state) {
+	UNUSED(state);
+
+	random_test(runs, ISC_RANDOM32);
+}
+
+/* Block frequency test for the RANDOM */
+static void
+isc_random32_blockfrequency(void **state) {
+	UNUSED(state);
+
+	random_test(blockfrequency, ISC_RANDOM32);
+}
+
+/* Binary matrix rank test for the RANDOM */
+static void
+isc_random32_binarymatrixrank(void **state) {
+	UNUSED(state);
+
+	random_test(binarymatrixrank, ISC_RANDOM32);
+}
+
+/***
+ *** Tests for isc_random_bytes() function
+ ***/
+
+/* Monobit test for the RANDOM */
+static void
+isc_random_bytes_monobit(void **state) {
+	UNUSED(state);
+
+	random_test(monobit, ISC_RANDOM_BYTES);
+}
+
+/* Runs test for the RANDOM */
+static void
+isc_random_bytes_runs(void **state) {
+	UNUSED(state);
+
+	random_test(runs, ISC_RANDOM_BYTES);
+}
+
+/* Block frequency test for the RANDOM */
+static void
+isc_random_bytes_blockfrequency(void **state) {
+	UNUSED(state);
+
+	random_test(blockfrequency, ISC_RANDOM_BYTES);
+}
+
+/* Binary matrix rank test for the RANDOM */
+static void
+isc_random_bytes_binarymatrixrank(void **state) {
+	UNUSED(state);
+
+	random_test(binarymatrixrank, ISC_RANDOM_BYTES);
+}
+
+/***
+ *** Tests for isc_random_uniform() function:
+ ***/
+
+/* Monobit test for the RANDOM */
+static void
+isc_random_uniform_monobit(void **state) {
+	UNUSED(state);
+
+	random_test(monobit, ISC_RANDOM_UNIFORM);
+}
+
+/* Runs test for the RANDOM */
+static void
+isc_random_uniform_runs(void **state) {
+	UNUSED(state);
+
+	random_test(runs, ISC_RANDOM_UNIFORM);
+}
+
+/* Block frequency test for the RANDOM */
+static void
+isc_random_uniform_blockfrequency(void **state) {
+	UNUSED(state);
+
+	random_test(blockfrequency, ISC_RANDOM_UNIFORM);
+}
+
+/* Binary matrix rank test for the RANDOM */
+static void
+isc_random_uniform_binarymatrixrank(void **state) {
+	UNUSED(state);
+
+	random_test(binarymatrixrank, ISC_RANDOM_UNIFORM);
+}
+
+/* Tests for isc_nonce_bytes() function */
+
+/* Monobit test for the RANDOM */
+static void
+isc_nonce_bytes_monobit(void **state) {
+	UNUSED(state);
+
+	random_test(monobit, ISC_NONCE_BYTES);
+}
+
+/* Runs test for the RANDOM */
+static void
+isc_nonce_bytes_runs(void **state) {
+	UNUSED(state);
+
+	random_test(runs, ISC_NONCE_BYTES);
+}
+
+/* Block frequency test for the RANDOM */
+static void
+isc_nonce_bytes_blockfrequency(void **state) {
+	UNUSED(state);
+
+	random_test(blockfrequency, ISC_NONCE_BYTES);
+}
+
+/* Binary matrix rank test for the RANDOM */
+static void
+isc_nonce_bytes_binarymatrixrank(void **state) {
+	UNUSED(state);
+
+	random_test(binarymatrixrank, ISC_NONCE_BYTES);
+}
+
+int
+main(int argc, char **argv) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(isc_random32_monobit),
+		cmocka_unit_test(isc_random32_runs),
+		cmocka_unit_test(isc_random32_blockfrequency),
+		cmocka_unit_test(isc_random32_binarymatrixrank),
+		cmocka_unit_test(isc_random_bytes_monobit),
+		cmocka_unit_test(isc_random_bytes_runs),
+		cmocka_unit_test(isc_random_bytes_blockfrequency),
+		cmocka_unit_test(isc_random_bytes_binarymatrixrank),
+		cmocka_unit_test(isc_random_uniform_monobit),
+		cmocka_unit_test(isc_random_uniform_runs),
+		cmocka_unit_test(isc_random_uniform_blockfrequency),
+		cmocka_unit_test(isc_random_uniform_binarymatrixrank),
+		cmocka_unit_test(isc_nonce_bytes_monobit),
+		cmocka_unit_test(isc_nonce_bytes_runs),
+		cmocka_unit_test(isc_nonce_bytes_blockfrequency),
+		cmocka_unit_test(isc_nonce_bytes_binarymatrixrank),
+	};
+	int c;
+
+	while ((c = isc_commandline_parse(argc, argv, "v")) != -1) {
+		switch (c) {
+		case 'v':
+			verbose = true;
+			break;
+		default:
+			break;
+		}
+	}
+
+	return (cmocka_run_group_tests(tests, _setup, _teardown));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/regex_test.c b/lib/isc/tests/regex_test.c
new file mode 100644
index 0000000..700df92
--- /dev/null
+++ b/lib/isc/tests/regex_test.c
@@ -0,0 +1,2374 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#ifdef HAVE_REGEX_H
+#include <regex.h>
+#endif /* ifdef HAVE_REGEX_H */
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/commandline.h>
+#include <isc/print.h>
+#include <isc/regex.h>
+#include <isc/util.h>
+
+/* Set to true (or use -v option) for verbose output */
+static bool verbose = false;
+
+/* test isc_regex_validate() */
+static void
+regex_validate(void **state) {
+	/*
+	 *  test regex were generated using http://code.google.com/p/regfuzz/
+	 *  modified to use only printable characters
+	 */
+	struct {
+		const char *expression;
+		int expect;
+		int exception; /* regcomp accepts but is
+				* disallowed. */
+	} tests[] = {
+		{ "", -1, 0 },
+		{ "*", -1, 0 },
+		{ ".*", 0, 0 },
+		{ ".**", -1, 0 },
+		{ ".*\?", -1, 0 },
+		{ ".*+", -1, 0 },
+		{ "+", -1, 0 },
+		{ ".+", 0, 0 },
+		{ ".++", -1, 0 },
+		{ ".+\?", -1, 0 },
+		{ ".+*", -1, 0 },
+		{ "\?", -1, 0 },
+		{ ".\?", 0, 0 },
+		{ ".\?\?", -1, 0 },
+		{ ".\?*", -1, 0 },
+		{ ".\?+", -1, 0 },
+		{ "(", -1, 0 },
+		{ "()", 1, 0 },
+		{ "(|)", -1, 0 },
+		{ "(a|)", -1, 0 },
+		{ "(|b)", -1, 0 },
+		{ ".{", 0, 0 },
+		{ ".{1", -1, 0 },
+		{ ".\\{1", 0, 0 },
+		{ ".{1}", 0, 0 },
+		{ ".\\{1}", 0, 0 },
+		{ ".{,", 0, 0 },
+		{ ".{,}", 0, 0 },
+		{ ".{1,}", 0, 0 },
+		{ ".\\{1,}", 0, 0 },
+		{ ".{1,\\}", -1, 0 },
+		{ ".{1,", -1, 0 },
+		{ ".\\{1,", 0, 0 },
+		{ ".{1,2}", 0, 0 },
+		{ ".{1,2}*", -1, 0 },
+		{ ".{1,2}+", -1, 0 },
+		{ ".{1,2}\?", -1, 0 },
+		{ ".{1,2", -1, 0 },
+		{ ".{2,1}", -1, 0 },
+		{ "[", -1, 0 },
+		{ "[]", -1, 0 },
+		{ "[]]", 0, 0 },
+		{ "[[]", 0, 0 },
+		{ "[^]", -1, 0 },
+		{ "[1-2-3]", -1, 0 },
+		{ "[1-22-3]", 0, 0 },
+		{ "[+--23]", 0, 0 },
+		{ "[+--]", 0, 0 },
+		{ "[-1]", 0, 0 },
+		{ "[1-]", 0, 0 },
+		{ "[[.^.]]", 0, 0 },
+		{ "[^]]", 0, 0 },
+		{ "[^^]", 0, 0 },
+		{ "[]]\?", 0, 0 },
+		{ "[[]\?", 0, 0 },
+		{ "[[..]]", -1, 0 },
+		{ "[[...]]", 0, 0 },
+		{ "[[..5.]--]", -1, 0 },
+		{ "[[.+.]--]", 0, 0 },
+		{ "[[..+.]--]", -1, 0 },
+		{ "[[.5.]--]", -1, 0 },
+		{ "[1-[=x=]]", -1, 0 },
+		{ "[[:alpha:]]", 0, 0 },
+		{ "[[:alpha:]", -1, 0 },
+		{ "[[:alnum:]]", 0, 0 },
+		{ "[[:alnum:]", -1, 0 },
+		{ "[[:digit:]]", 0, 0 },
+		{ "[[:digit:]", -1, 0 },
+		{ "[[:punct:]]", 0, 0 },
+		{ "[[:punct:]", -1, 0 },
+		{ "[[:graph:]]", 0, 0 },
+		{ "[[:graph:]", -1, 0 },
+		{ "[[:space:]]", 0, 0 },
+		{ "[[:space:]", -1, 0 },
+		{ "[[:blank:]]", 0, 0 },
+		{ "[[:blank:]", -1, 0 },
+		{ "[[:upper:]]", 0, 0 },
+		{ "[[:upper:]", -1, 0 },
+		{ "[[:cntrl:]]", 0, 0 },
+		{ "[[:cntrl:]", -1, 0 },
+		{ "[[:print:]]", 0, 0 },
+		{ "[[:print:]", -1, 0 },
+		{ "[[:xdigit:]]", 0, 0 },
+		{ "[[:xdigit:]", -1, 0 },
+		{ "[[:unknown:]]", -1, 0 },
+		{ "\\[", 0, 0 },
+		{ "(a)\\1", 1, 0 },
+		{ "(a)\\2", -1, 1 },
+		{ "\\0", 0, 0 },
+		{ "[[][:g(\?(raph:][:alnu)(\?{m:][:space:]h]<Z3})AAA)S[:space:]"
+		  "{176,}",
+		  0, 0 },
+		{ "(()IIIIIIII(III[[[[[[[[[[[[[[[[[[^[[[[[[[[              [^  "
+		  "     "
+		  "fX][:ascii:].)N[:a(\?<!lpha:])][:punct:]e*y+)a{-124,223}",
+		  3, 0 },
+		{ "(pP\\\\\\(\?<!"
+		  "\\\\\\\\\\\\\\\\\\\\\\lRRRRRRRRRRRRRRRRBBBBBBBBBBBBBBBB))"
+		  "kkkkkkkkkkkkkkkkkkkkk|^",
+		  1, 0 },
+		{ "[^[^[{111}(\?=(\?:(\?>/"
+		  "r(\?<(\?=!(\?(\?!<!Q(\?:=0_{Meqipm`(\?((\?{x|N)))))|))+]+]Z)"
+		  "O{,-215}])}))___________________{}",
+		  0, 0 },
+		{ "[C{,-218(\?=}E^< ]PP-Ga)t``````````````````````````{138}", 0,
+		  0 },
+		{ "[^h(\?<!(\?>Nn(\?#])))", 0, 0 },
+		{ "[(\?!(\?<=[^{,37}AAAA(AAAAAAAAAAAAA])", 0, 0 },
+		{ "[^((\?(\?:ms(\?<!xims:A{}(\?{*</H(\?=xL "
+		  "$(\?<!,[})))*)qqqqqqqqqqqqqqqqqq)]"
+		  "33333333333333333333333333333{[:graph:]p)-+( "
+		  "oqD]){-10,}-{247}_______________________X-e[:alpha:][:"
+		  "upperword:]_(______wwwwwwwww "
+		  "/c[:upperword:][:alnum:][:alnum:][:pun(\?{ct:])[:blankcntrl:"
+		  "]})*_*",
+		  2, 0 },
+		{ "[(\?<!:lowerprin(\?{t:]{}}){113,})[:punct:]"
+		  "IIIIIIIIIIIIIIIIIIIIIIII",
+		  0, 0 },
+		{ "PP)", 0, 0 },
+		{ "(([^(\?<!((\?>\?=[])p.]}8X[:blankcntrl:],{-119,94})XmF1.{)-)"
+		  "[:upperword:])[:digit:]{zg-q",
+		  2, 0 },
+		{ "[^[({(\?#254}))Z[l][x50]=444444444444(4444444444u[:punct:]"
+		  "\?[:punct:(\?!])])",
+		  1, 0 },
+		{ "[^[^[^([^((*4[(^((\?<=])Ec)", 0, 0 },
+		{ "(0)Y:8biiiiiiiiiiiiiiiiiii", 1, 0 },
+		{ "[^w(\?!)P::::::::::::::(\?#::(\?<=:::::::::]\"\"{}["
+		  "3333333333333333(\?<=33333(\?!)9Xja][:alph(\?<=a:])xB1)("
+		  "PX8Cf\?4444)qq[:digit:])",
+		  1, 0 },
+		{ "([U[^[^].]^m]/306KS7JJJJJJJJ{})", 1, 0 },
+		{ "[^[^([^[(\?!(\?>8j`Wg2(\?{,(\?>!#N++++(\?<![++++++)+"
+		  "44444444bA:K(\?<!O3([:digit:]3]}}}}}}}}}}}}}}}}}}}}}}}}LP})"
+		  "S",
+		  0, 0 },
+		{ "[({(\?{,(\?(=213}*))})]WWWWWWWWWWWWWWW[:alnum:])", 0, 0 },
+		{ "[:(\?<=ascii:])", 0, 0 },
+		{ "[U(\?#)(\?<=+HzE])[:punct:]{-207,170}\?s.!", 0, 0 },
+		{ "{}z=jU75~n#soD\"&\?UL`X{xxxxxxxxxxxxxxxxxxxx(xxxxxx${-246,"
+		  "27}[:graph:]g\"{_bX)[:alnum:][:punct:]{-79,}-",
+		  1, 0 },
+		{ "[^{,-186}@@@@[^(\?{@@(\?>@+(\?>l.]}))*\\BCYX]^W{52,123}("
+		  "lXislccccccccccccccccc)-*)",
+		  1, 0 },
+		{ "(x42+,)7=]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]", 1, 0 },
+		{ "[^(*[:graph:]q/TH\?B(\?{P)]})uZn[:digit:]+2", 0, 0 },
+		{ "([XXXXXXXXXXXXXXXXXXXXX[(:alnum:][:space:]i%[:upperw(\?=o("
+		  "\?#rd:])) ",
+		  1, 0 },
+		{ "(@@@@)", 1, 0 },
+		{ "{-18,}[:as[(\?>^[cii:]]{}>+{-46,}{,95}[:punct:]{}"
+		  "99999999999999])-{-134}'sK$"
+		  "wCKjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj",
+		  0, 0 },
+		{ "(l[:alpha:(\?!]))", 1, 0 },
+		{ "[[^(\?{]|JJ[:alph(a:]X{})B^][:lowerprint:]n-219{-32}{19,105}"
+		  "k4P}){,-144}",
+		  0, 0 },
+		{ "[[^]P[:punct:][:alpha:][:xdigit:]syh]|W#JS*(m<2,P-RK)cA@", 1,
+		  0 },
+		{ "([^((\?({\?<=)}){[^}^]{}])^P4[:punct:[]$)]", 1, 0 },
+		{ "([(\?#:(\?{space:]}):{}{-242,}n)F[:alpha:]3$)d4H3up6qS[:"
+		  "blankcntrl:]B:C{}[:upperword:]r",
+		  1, 0 },
+		{ "([(\?:]))[:digit:]mLV.{}", 1, 0 },
+		{ "[^PPP-[]{[,50}{128,}]111111111111111]p", 0, 0 },
+		{ "[^([^([^([[^[([^[^[[2[[[[[[[[[[[[[^[[[[(\?(\?{:[[[[[[(\?([-["
+		  ":ascii:]--*)",
+		  -1, 0 },
+		{ ")!F^DA/ZZZZZZZZZZZZZZZZZZ", 0, 0 },
+		{ "[[[[[[[((\?=\?(\?>([[[[[[[^[[[[(\?()[[[K(\?#))])))]7Y[:"
+		  "space:]{,-96}pP)[:ascii:]u{-88}:N{-251}uo",
+		  0, 0 },
+		{ "t[:x(\?<=digit:])eYYYYYYYYYYYYYYYYYY{,-220}A", 0, 0 },
+		{ "[[({10,}[:graph:]Pdddddd(\?#X)])[:alnum:(]]L-C){,50}[:"
+		  "blankcntrl:]p[:gra(ph:]){66,}",
+		  0, 0 },
+		{ "[^[^]*4br]w[:digit(\?::]n99999999999999999)P[:punct:]pP", 0,
+		  0 },
+		{ "[:digit:]{67,247}!N{122})VrXe", 0, 0 },
+		{ "[:xdigit:]^[:xdigit:]Z[:alnum:]^^^^1[:upperword:(\?=])[:"
+		  "lowerprint:]*JJ-",
+		  0, 0 },
+		{ "[[(\?imsximsx:^*e(){,3[6}](V~\?^[:asc(\?!ii:]I.dZ))]$^"
+		  "AAAAAAAAAAAAAAAAAAAAAAAA[:space:]k)]",
+		  1, 0 },
+		{ "W{,112}[:lowerp(\?<!rint:]$#GT>R7~t'"
+		  "\"\"\"\"\"\"\"\"\"\"\"\"\"\"\"\"\"\"9,O).",
+		  0, 0 },
+		{ "[^{6((\?>\?:4}(\?<=G))f)"
+		  "KKKKKKKKKKKKKKKKKKKKKKKKKKKKKpppppppp(\?=ppppp]{,-101}|[:"
+		  "blankcntrl:]Z{-182})",
+		  0, 0 },
+		{ "([:punct:]@^,,,,,,,,,,,,,,,,,,,,,,,,,,0\?:-o8NPIIIIIIIII)"
+		  "pPKKKKKKKKKKKKKKKKKKKK",
+		  1, 0 },
+		{ "([^[[^[^]]]])", 1, 0 },
+		{ "[([^[(333\"(\?#\\\\[)(\?isx-x:\"Tx]')", 0, 0 },
+		{ "[[n>^>T%.zzzzzzzzzzzzzzzzz$&|Fk.1o7^o, "
+		  "^8{202,-12}$[:alnum:]]G[:upperword:]V[:xdigit:]L|[:"
+		  "upperword:]KKKKKKKKKKKKYX\"\")xJ "
+		  "~B@[{,-68}/][:upperword:]QI.",
+		  0, 0 },
+		{ "[^[]tN^hy3\"d@v T[GE\?^~{124,10(\?{2}]})\?[:upperword:]O", 0,
+		  0 },
+		{ "d.``````````````````````````[:up(\?=perword:]"
+		  "RRRRRRRRRRRRRRR)",
+		  0, 0 },
+		{ "[Z{{{{{{{{{{{{{(\?={(\?<!{{{{{{{{{(\?>{{J6N:H[tA+mN3Zmf:p\?]"
+		  "\?){-181,82}S4n.b[:lowerpri(\?{nt:]|"
+		  "ggggggggggggggggggggggggggggggg}))4)",
+		  0, 0 },
+		{ "[^((/////[^////[^/////////[(^/////]fI{240}{-120}+]R]GA)", 0,
+		  0 },
+		{ "[-(\?#.)(\?())[:alpha:](\?={(\?#}r)[:space:]PPW]o)", 0, 0 },
+		{ "[:lowerp(\?{rint:]})201{46,}[:a[^scii:]0Q{37,}][:blankcntrl:"
+		  "]1331",
+		  0, 0 },
+		{ "[^(\?!(\?#)\\GIwxKKKKKKKKKK'$KKKKKKKK]l)bbb^&\?", 0, 0 },
+		{ "[:ascii:]*[:sp(\?<=ace:])", 0, 0 },
+		{ "({-66,}Z{})0I{-111,}[:punct(\?():])", 1, 0 },
+		{ "[[^(\?!()%%%%%%%%%%%%%(\?:%%%%%%%%%%%%%%%%)t(\?{VX>B#6sUU("
+		  "\?<!UUUUUU(\?=UUU[^UUUUUUUUUUUU(\?((\?:UPPPPPPPPPPP)"
+		  "PPPPPPPPPPPPPPP]ffffffffffffffffffffffff)^[:space:]"
+		  "wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww{243}9[:lowerprint:]Dv[:"
+		  "graph:])][:blankcntrl:]V%E[:graph:]})[:space:]{-83,}cQZ{}4{-"
+		  "23,135}",
+		  0, 0 },
+		{ "({,-76[}]O[:xdi(\?<!git:])\?5))))))))\?d[:lowerprint:]"
+		  "b666666[:graph:]c",
+		  1, 0 },
+		{ "{}{-145,}[:(\?(spa)ce:])f", 0, 0 },
+		{ "[([^].{116,243}]T*[[^:punct(\?[{[^:(\?<!]]8()])[:alnum:])})]"
+		  "N{}{,243}*[n]][:graph:]",
+		  1, 0 },
+		{ "[^w]8888888888888888_________(__________[:ascii:]BdqTE$^0|"
+		  "MNto*i#############[^#################])",
+		  1, 0 },
+		{ "[^[[[<[()\?]GGG{,26[}[:alnum:]SSSSS.gggggggg[:graph:]"
+		  "CCCCCCCCCCC{79,}{138,191}][:di(git:]u]@]"
+		  "JJJJJJJJJJJJJJJJJJJJJJJ[:graph:(\?:][:alnum:]])[:alnum:])]",
+		  0, 0 },
+		{ "[^(((BBBBBBBBBB(\?>BBBZvvvvvvvvvv(\?m(sximsx:vvv)iiiiiiii)))"
+		  "j>Rs:Sm]0MMMMMMMMMMM|@F)Y]*^#EEEEEEE)*",
+		  0, 0 },
+		{ "([^([(U(\?!)<<<<<<<<<<(\?#<<<<(\?<!<<<)(\?=L.{73,})+]n9U}fk%"
+		  "Jn}'b Na<%yyyyyyyyyyyy)){-198,}]))[:space:].pP361U]3s@u_9AU "
+		  "Te/{s`6=IMZdL1|.ySRo",
+		  1, 0 },
+		{ "[[((\?<=\?>(\?#){}]{}`){1,82}){-143[,}]^G", 0, 0 },
+		{ "[:digit:]W|[:up(\?<!perword:]{,-101}llllllllllllllllll[:"
+		  "upperword:])mmYYYYYYYYYYYYYYYYYYYYYYY*",
+		  0, 0 },
+		{ "@NHy)", 0, 0 },
+		{ "([^[^]][:alnum:]222[^22222222(\?{2222222222222222][:lo(\?:"
+		  "werprint:][:xdigit:]^[:blankcntrl:]s+N)[:alpha:]-"
+		  "NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNWxxxxxxxxxxxxxxxxxxxxxxxxxxD["
+		  ":space:]U)TTTTTTTTTTfffffffffffzzzzzzzzzzzzzzzzzzzzzzzzz})",
+		  1, 0 },
+		{ "[^[^[[^[][^[]pP([^\?[^<=(\?=]){158,})]]]][:digit:]]"
+		  "K22222222222p^dUKJ`\">@]",
+		  1, 0 },
+		{ "[^[^[(\?imsximsx::p(\?{unct:][(\?>:ascii:]5w)]{159}\\Q\?@C]"
+		  "4(44444444}[^)|)[:graph:]]C:b)",
+		  1, 0 },
+		{ "[^[[(tYri[W<8%1(\?='yt][:lowerprint:[]))1r]][:alnum:][:"
+		  "digit:]{48}{-52,-183}+][:alpha:]r][:upperword:]\?{-105,155}{"
+		  "-55,-87}pPN#############################{63,232}]",
+		  0, 0 },
+		{ "[*(\?>L(\?<(\?>=))]&&&&&&&(&&&&&&&&&&&&&&&&&&))[|WIX]{-62,-"
+		  "114}S  K=HW60XE<2+W",
+		  1, 0 },
+		{ "(00000000000)z\\\\*t{}R{88}[:alnum:]*", 1, 0 },
+		{ "(([^(\?=\?gggggg[gLw)]{-250,}[:xdigit:]yZ[:g(raph:]8QNr[:"
+		  "space:][:blankcntrl:]A)][:digit:]D)[:xdigit:])",
+		  2, 0 },
+		{ "[^([^,(\?<!]*))]", 0, 0 },
+		{ "[^(\?{[:alnum:]]}}}}}}}}}}}}}}}}}}}}}}}){-83}", 0, 0 },
+		{ "WWWWWWWW[:alnum(\?<=(\?#:]{,-1})@OSSS)[:digit:]", 0, 0 },
+		{ "[^(\?!*]+G)", 0, 0 },
+		{ "[LLLLLLLLLLLLLLLLLLLLLLLLLLLLLL>s8.>[^{}$(\?(]]XXXXXXX)"
+		  "XXXXXXXXXXXXXX[:alpha:]Whii\?p[:xdigit:])+",
+		  0, 0 },
+		{ "(7777[:blankcntrl:])", 1, 0 },
+		{ "[^C[:digit:]]{}YYYY(YYYYYYYYYYYYYYYY)", 1, 0 },
+		{ "on|,#tve%F(w-::::::::::::::::::::::::::::*=->)", 1, 0 },
+		{ "([((\?=(\?!((\?=')))27(<{})S-vvvvvvvvvv(\?="
+		  "vvvvvvvvvvvvvvvvv[:punct:][:alnum:]}}}}}}}}}}}}}}}}}}}}}}}"
+		  "PPPPPPPPPPPPPPPPPPPPPPPPPPPPPgggggggggggggggggggggggggg(\?#("
+		  "\?#gggggg<X){}]{-164,61})>+))uQ)W>[:punct:][:xdigit:][:"
+		  "digit:][:punct:]{}[:digit:][:space:]){,-105}=xiAyf}o[:alpha:"
+		  "]akZSYK+sl{",
+		  1, 0 },
+		{ "[^[^]/S:Hq<[:upperword:(\?<=]W[:alnum:]X])1973", 0, 0 },
+		{ "[[^[[^([^VVVV(\?!(VVVVVVVVVVVVVVVVVVVVV[VVVVX][^]2))"
+		  "98ppppppppppppppppppppppppppppppp/////////////////////"
+		  "b.]G{-101,}[:[ascii:]P].=~])AAAAAAAAAAAAA2{-153,}]]]]]]]]]]]"
+		  "]]]]]]]]]]]]]]]]]]]]][:alnum:][:lowerprint:]WN/"
+		  "D!rD]|4444{180}]V_@3lW#lat]",
+		  0, 0 },
+		{ "[^[^([^TTTTT(\?:T(\?:T7777{,59}])[:graph:][:ascii(\?<=:]))f]"
+		  "AD{,-43}%%%%%%%%%%%%%%%%)S|[:digit:]FZm<[:blankcntrl:]QT&xj*"
+		  "{-114,}$[:xdigit:]042][:xdig[it:]{-180}027[:alpha:][:ascii:]"
+		  "[:lowerprint:][:xdigit:]^|[:alnum:][^Mi]z!suQ{-44,-32}[:"
+		  "digit:]]",
+		  0, 0 },
+		{ ")", 0, 0 },
+		{ "''''''''''[:a(\?imsxisx:lnum:])P", 0, 0 },
+		{ "(([{20(\?<=8}[:alnum:]pP$`(\?#N)wRH[:graph:]aaaaaaaaaaaaaa("
+		  "\?=aaaaaaaaaaaaaaaaP]a)))[:punct:]-\?)A^",
+		  2, 0 },
+		{ "[^(.//"
+		  "[:punct:]&-333333333333333333333333333(\?<!33)"
+		  "LLLLLLLLLLLLLLLLL[:alnum:]$1]~8]|^\"A[:xdigit:]\?[:ascii:]{"
+		  "128,}{,-74}[:graph:]{157}3N){-196,184}D",
+		  0, 0 },
+		{ "[^($(\?{(\?<=)[#)]})[:space:]]nWML0D{}", 0, 0 },
+		{ ",,,,,,,,,,,,,,,,,,,,,,,,,,,,,[^]x{213,-93}(\?{A7]V{}})", 0,
+		  0 },
+		{ "[k(\?=*)+^[f(])r_H6", 0, 0 },
+		{ "[(\?#(\?{)]q})", 0, 0 },
+		{ "([GLLLLLLLLLL(\?!((\?:LLLLLLLL]))C#T$Y))^|>W90DDDDDDDDDDD[^"
+		  "DDDDDDDDDDDDDDDDDDDD]B[:punct:]c/",
+		  1, 0 },
+		{ "[^(\?<!)(\?{b}){,199}A[:space:]+++++++(\?!++++++++{36}Tn])",
+		  0, 0 },
+		{ "()[:alpha:]a", 1, 0 },
+		{ "[(\?(:blan)kcntrl:])lUUUUUUUUUUUUUUUUUUUUUUU", 0, 0 },
+		{ "[^[^(s[[[[[[[[[[[[[[(\?#[[[[[[[)\?`````][:blankcntrl:(\?>]|)"
+		  "p1EmmmmmmmmmmmmmmmmmmmmmmmmmmmmL{-241}666666666666666666666)"
+		  "]^bLDDDDDDDDDDDDD]",
+		  0, 0 },
+		{ "[nn(\?<!nnnnn(\?#n8)=````````````````````{41,}]U,cb*%Y[:"
+		  "graph:]).[:alnum:]\\\\\\\\\\gt",
+		  0, 0 },
+		{ "()\?5{,-195}lm*Ga[:space:]Y", 1, 0 },
+		{ "[(\?:].di)c", 0, 0 },
+		{ "([([^([\?{})Za,$S(\?!p(\?{++(\?##V(\?<!Evuil.2(\?<![^[h|[^']"
+		  "C)*\"]5]",
+		  1, 0 },
+		{ "[((^24(\?#4[^Kkj{}))]]{232}47)077[:alpha:]zzzzzzzz{}", 0,
+		  0 },
+		{ "[^(\?:[^F]o$h)-iV%]", 0, 0 },
+		{ "[[^[([((([^(\?{[^((\?=)kaSx(\?imsximsx:w3A[`%+A$I{,62}ns&Y!#"
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+		{ "[^]ozp+0(\?#\"[(\?()X]))[:blankcntrl:][^e{99,222}"
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+		{ "[[^[[((\?isximx:)2222222222(\?=22222[:graph:])+U)((\?{\?<=("
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+		  ":graph:]]{2}^G{79,}DDDDDbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbb)|"
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+		{ "[:alph(\?{a:]p1[:lowerprint:]}){163,}", 0, 0 },
+		{ "W()", 1, 0 },
+		{ "()``````````````````````````[:ascii:][:alnum:]{,26}[:graph:"
+		  "]",
+		  1, 0 },
+		{ "[:al(\?<!num:]|byyy,*)U5%u${190}-{-221,-33}"
+		  "k7777777777777777777777777777777+eXXXXXXXXXXXXXXXXX[X(\?(XX)"
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+		  -1, 0 },
+		{ "[^(([R_AC[lE'{2(\?{28(]8LTt[]b[:punct:]]O)|2[:graph:][:"
+		  "space:]})                               "
+		  "x3C[:alpha:])uI+dddddddddddddddddddddddd{-165,}"
+		  "FFFFFFFFFFFFFFFFFFFFFFF)cccc*[:upperword:]]G{,-38}{24,}"
+		  "555555555555555555555555555VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVZ["
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+		  0, 0 },
+		{ "[^QQQQQQQ(\?#QQ(QQQQQQ[:punct:][:space:]){(\?(\?:!}[:graph:]"
+		  "t}}[^}}(}}}}}444444[^444444444444444444444]\?]G)E)L{,-103}{"
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+		  "eeeeeeeeeeeeeeeeeeeeeeeeeeeeeee{,83}[:digit:])"
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+		{ "[^({,[^233}[^d)BBBBBBBBBBBBBBB=======(\?>===========[^=S|[^["
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+		  0, 0 },
+		{ "[([^[[:space:]ffffff(\?=ff]M]))[:xdigit:]UbCI,CzalLU*y5I[:"
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+		  0, 0 },
+		{ "[^[h(\?{hhhhhhhhhhhhhhhhhhhhh})]{,143}[:lowerprint:][:ascii:"
+		  "((\?(\?=])[:asc)ii:])zp]",
+		  0, 0 },
+		{ "[[(\?{]})]", 0, 0 },
+		{ "[[1\"3m^,(\?<!2((\?!\?#t```````````````````````````)\?)|c^)"
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+		{ "([${144,}(\?<!)-RAk_F(\?imsxisx:=9]z/))", 1, 0 },
+		{ "[[^[[[^([[^[^[^([[^([[Uiiiii#####(\?(\?{(\?<!#########(\?=##"
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+		{ "[(\?>[(^()Vty2vvvvvvvvvvvvvvvvz^])ZZZZZZZZZZZZZZZZZZZ-------"
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+		{ "[}}}}}}}}}}}}}}}}}}}(\?#}}(\?<=)|*C "
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+		{ "([^((\?<=\?)D{,200}.[(\?#:ascii:])[:space:].)[:alpha:]D|[:"
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+		{ "[^([^(A{[^}g(\?()A9p#54b]-------------------------------)."
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+		{ "www(wwwwwwwwwwwww)", 1, 0 },
+		{ "()555555555555{18}i+[:alnum:]E  {}U", 1, 0 },
+		{ "SqbHoooooooooooo[^oooooo([^ooooooo])\\N[:xdigit:]]oooo`", 0,
+		  0 },
+		{ "[999999999999999999uE{193,0}lx{7917}[:punct:]4&d]{221,}[:"
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+		  0, 0 },
+		{ "[^(\?{})<{220,-193}[(\?=:xdigit:]UUUUUUUUUUUUUUUUUUU'{-18}]"
+		  ")",
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+		{ "b[(\?<=:upperw(\?{ord:][:digit:]})EEEEEEEEEEEEEEEEEEEEE/////"
+		  "/////////////){177}C",
+		  0, 0 },
+		{ "(^).[:alnum:][^[(\?=[(\?{[})DA5{)[[I~y&O\?9>])]][:"
+		  "blankcntrl:]M[:alpha:]x9[:upperword:]|[:xdigit:]b",
+		  1, 0 },
+		{ "()[:digit:][^[U}-]]{,206}V*WJ@R]\?", 1, 0 },
+		{ "[^](\?#{}(\?[<=)yv)]r", 0, 0 },
+		{ "({,-192}//////////////////////7!eW_0eoL){}", 1, 0 },
+		{ "^[:punct:(]+)IIIIIIIII[:punct:]P$pP", 0, 0 },
+		{ "[(\?=|U)^-]{-52,-72}[:digit:]*6666666666\?{{{", 0, 0 },
+		{ "([^f(\?:+{1((\?=34,}]))^)s0bux7\?5`Bwr[:upperword:])Dy+", 1,
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+		{ "[^(()f])G^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^T{}N*nK[G]{,61}^^^^^"
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+		{ "[(N::(\?<=[:digit:][:graph:][:space:]xB5[(:xdigit:]|Yv{}"
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+		{ "[^((\?(\?(())a)(\?!){})W)pP3333333333("
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+		{ "($$$$$$$$$$$$$$$$$$$$$$$$$$$$$^pP),,,,,,,,,,,,,(,,,,,,,,,,,,"
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+		{ "()+", 1, 0 },
+		{ "[(([(\?{[:punct:]]|))[[[[[[[[[[})]WWWWWWWW&$$$$$$$[:graph:]",
+		  0, 0 },
+		{ "[^(\?{}){(107[(^,}][:space:[]))^w,&aPPPPPP[^PPPPP{117,-213}"
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+		{ "([^[]%[^[^]-][:alpha:]37*:[:space:]]lQvu)[:xdigit:][:"
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+		{ "[[Bl_>9C^:\?X_KK]2sw@hHZT!],uuuuuuut|lFW()''''''''''''''''''"
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+		{ "[:al(\?{[^num:]]})}x'[:(\?#xdigit:])"
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+		{ "(-62([:ascii:]5555){-230,}<<<<<<SM[:punct:]{72}|E{160,})"
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+		  2, 0 },
+		{ "([^(\?:(Ea00000000000000[:punct:][:graph:]{}]))[:xdigit:]{-"
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+		{ "(M(MM)[:alnum:]|[:lowerprint:]4)", 2, 0 },
+		{ "[[^(\?:{}{2[2(\?>0,})]]]Etu)-)", 0, 0 },
+		{ "([^[^^z[:graph:]]#{-144,96}[:punct:]!4LY//////////////////"
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+		  "[:alpha:]Q)|07be5:j)]",
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+		{ "([(\?i(ms(\?=x-x(\?>:))C)]){})>eIqm~lFb[:upperword:][:"
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+		{ "B{[^-32,246}{13(\?!0}q>GVQw*[:digit:][:punct:]."
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+		{ "[t[$FV+(\?=E=[^])]-$U{-22[5,}{253,}08g]$[{}][:xdigit:][:"
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+		{ "()$", 1, 0 },
+		{ "[^[^((((((((((((((W[(\?::blankcntrl:]&-JH]J){93}LLLLLLL|r{,"
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+		  0, 0 },
+		{ "[([]^]^)", 0, 0 },
+		{ "([.(\?#){}[:alpha:]\?S{2}P%Gw]"
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+		{ "(RRRRRRR[^RRRRR[RRRRRRRRR])]", 1, 0 },
+		{ "[(\?:^])D%", 0, 0 },
+		{ "()[]#C[+[j]{,29}-]", 1, 0 },
+		{ "(([(\?(((\?{\?!(\?=\?=#[Es*){02$r'}(\?:3pz)"
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+		{ "()3[:lowerprint:]", 1, 0 },
+		{ "[(\?{(\?#(\?>SN}[^)z+r^t[:digit:]seP[:alnum:]$b1ZY[U(\?<!"
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+		{ "[:graph:]h[:upper(\?(wo(\?{rd:)])00000[^000000000000})."
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+		{ "[](((((((((((((((N{{{{{{{{{{{{{{{{,-1}e]a{-166,-44}", 0, 0 },
+		{ "([[^[^[(^[]]YYYYYYYYYYY]D.cQ{}[:alpha:]ttttttt000000[^0000("
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+		{ "(G)[:alpha:(\?#])W{-197,-220}w8", 1, 0 },
+		{ "{-2[^00,(\?#-([84}ig+)]]l[:graph:][:graph:][:space:])"
+		  "aaaaaaaaaaaaaaaaaaa{-208,}ea{,224}",
+		  0, 0 },
+		{ "[^[W(\?<=[B[:xdigit:]{255,}FAAAAAAAAAAAAAAAAAAAPP])[:xdigit:"
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+		  0, 0 },
+		{ "[v{104,}BB].HHHHHHHHHHHH[:ascii:]"
+		  "bbbbbbbbbbbbbbbbbbbbbbbbbbbb(btttttttttttttttttttttttttt){"
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+		  0 },
+		{ "(([:space:])[:g(\?>raph:])[:punct:][:upperword:]LV\"t+t!)[:"
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+		{ "[[[^([7(\?[<!)\\PP~D7L        (\?imsimsx:(\?=  "
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+		{ "[[^]{-244[}(\?([^|W0E4]UUUUUUUUUUUUUU[:upper)word:][:space:]"
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+		{ "[[(\?#F^(\?<!)|)fff(\?!fffffffffffffffff(\?{ffffff(\?:"
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+		{ "[^[^((\?:)ww[wwww(\?>wwwww)3z/57z){34}]/(/////////////[^////"
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+		{ "(!)GS[:ascii:][:punct:]{235}T'&-_h\"", 1, 0 },
+		{ "(){}", 1, 0 },
+		{ "[[^((\?!(\?<=)*QF[:alpha:])([^[^\?<!x60t(\?<!"
+		  "UUUUUUUUUUUUUUUUUUUU)K&d{118}z7nM.G)````````````````````````"
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+		  0, 0 },
+		{ "[^{223}.^,-qqqqqqqqq((\?!\?>qqqqqqqqqqqqqqqqqqqqqqqP6W0_'O)"
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+		{ "[^[[Xf`````((\?{(\?<=\?imsmsx:`````````(\?!`````````[```("
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+		{ "[[[^##(\?################(\?>(\?(##t)][:punct:])b))<<<<<<<<<"
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+		  "f]l{-253}",
+		  0, 0 },
+		{ "[:graph:]L{-136,175}{[^}h(\?=t)Q]ooooooooo("
+		  "ooooooooooooooooo_)[:space:]q\?",
+		  1, 0 },
+		{ "()$.", 1, 0 },
+		{ "[(\?<!^$.\?{197}B]$)", 0, 0 },
+		{ "[:di(git:])[:low(erprint:])qqqqqqqqqqqqqqqq[:digit:]", 0,
+		  0 },
+		{ "((zzzzzzzzzzzzAUUUU)l$]VD                 z~)n", 2, 0 },
+		{ "([^[(\?<=^[]{}][.WWWW)044444444444(\?=44(\?{444(\?{("
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+		  1, 0 },
+		{ "\\ce[:(\?#asc(\?{ii:])})[:upperword:]`^", 0, 0 },
+		{ "[:graph:(\?<=])[:alpha:]", 0, 0 },
+		{ "([:upp(\?=erword:])pC)lp\?", 1, 0 },
+		{ "(oooooooooooooo\?fN)-[:alpha:]{-213}[:alnum:]qHEu", 1, 0 },
+		{ "[:punct:]TTTTTTTTTTTTTTTTTTT[:d(\?#igit:])[:alpha:]", 0, 0 },
+		{ "([^[^[^J4(+++++++++++++++++++++SgDE(\?>\"y8].]::::::::::::::"
+		  ":)pP5-]p)O{,199}xxxxxxxxxxxxxxxxxxxxxx[:ascii:]%",
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+		{ "([:alpha:]Fs)Z", 1, 0 },
+		{ "[()]{209}[:alpha:]hhhhhhhhh(hhhhhhhhhhhhhhhhhhhhh)pP<<<<<<<<"
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+		{ "-{-8,}.[:(\?imsxx:ascii(\?<!:]{-231}aa*{}K^UQL\?)d\?[:"
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+		{ "P@i #>>PF!@8G<[(\?:^P]-)D", 0, 0 },
+		{ "uZZZZZZZZZZZZZZ[^ZZZZZl*-211{199}(\?!p])"
+		  "EEEEEEEEEEEEEEEEEEEEEEEEEEED[:lowerp(\?msximsx:rint:])",
+		  0, 0 },
+		{ "[(\?!^])021[:graph:]'", 0, 0 },
+		{ "\\(\?>[(\?<=:ascii:]{}[:alpha:]d8}G))", 0, 0 },
+		{ "[^[((\?!1)[^,a|]\?{,242}[:alnum:])X\"a", 0, 0 },
+		{ "pP[((\?simx::a(\?!lnum:]vvvvvvvvvvvvvvvvvvvvvvvvv)|O0)[:"
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+		{ "_ L:8J-~ Y$[:uppe(rword:]{,-184}]{}6.A)", 0, 0 },
+		{ "{,105}.(9]]{-12})N@0nOOE", 1, 0 },
+		{ "HHHHHHHHHH[:xdigit:]uuuuuuuuuuuu{}E^X\\\\\\12601", -1, 1 },
+		{ "( o)=\"OU7h{V>", 1, 0 },
+		{ "[[:xdigit:])))))$[:xdigit:]+{152}{,-50}(c),,,,,,!!!!!!!!!!!!"
+		  "!!(\?>!!!!!!!!!!!!!.[:digit:]i>\"O'i9])-175d_",
+		  0, 0 },
+		{ "[([^[^[^([[Eeee[^eeeeeee(\?(\?<!(eeeeeeeeeeeeeeeeeef|]][:"
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+		{ "(7)NNNNNNNNNNN132", 1, 0 },
+		{ "[([\?#^[]{QKm$v])][:alp[^ha:]]", 0, 0 },
+		{ "(:{86})7{K|[:alpha:]{O", 1, 0 },
+		{ "([Y(\?{[[^:alnum:][:alnum:][:digit:][:a(\?(lpha(\?(:].})", 1,
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+		  0, 0 },
+		{ "[[^(\?>(([]))])[:graph:]]{65,}as#Q:lQ", 0, 0 },
+		{ "[^[fPPUUUUUUUUUUU(\?#UUU[^UUUUUU(\?<="
+		  "UUUUUUUUUGGGGGGGGGGGGGGGGGGG((\?{\?=GGGGGG.MK))+]+)&UxFW)"
+		  "rwv\?@D.",
+		  0, 0 },
+		{ "{-(60,})m", 1, 0 },
+		{ "b[(])^w", 0, 0 },
+		{ "[][^qVs(\?:(p])X)\?'", 0, 0 },
+		{ "()8", 1, 0 },
+		{ "(t[:punc[^t:(\?{][:blankcntrl:])})[^8\?]z*]", 1, 0 },
+		{ "[:lowerprint:])[:graph:]lppppppppppppppppppppppppppppf", 0,
+		  0 },
+		{ "[:alph(a:])[:ascii:]g +z-Bc-U{,%Gk", 0, 0 },
+		{ "u[:graph:(\?=]*)W:::", 0, 0 },
+		{ "([:alnum(:])l)", 1, 0 },
+		{ "[[[}}}}}}}}(\?<!}}}}}}}+(\?{),,,,,,,,,,,,,,(\?!,,,,,,,,]"
+		  "99999999999&R[:ascii:]ZZZZ-{-10,}{96}Ed*][:graph:])]}){}{}G{"
+		  "-9,}",
+		  0, 0 },
+		{ "([^[{}]]Z[[^:graph:]{-47}55555555555555555555555555555[:"
+		  "ascii:]s]6,$:3qAew1Y)+)[:punct:]",
+		  1, 0 },
+		{ "[[[[[([[[[[[[[[[[[[[[[[[[[[[[[8!1i]')", 0, 0 },
+		{ "([((\?(\?#>)(\?{,)At]%M9FSq5)EB", 1, 0 },
+		{ "(}````````````````(``{210,})[:(\?#space:]P[:digit:])PP.{-"
+		  "227,}$pK~mm ImR|{,51}[:alnum:]<)[:alpha:]",
+		  2, 0 },
+		{ "[^(\?<=])[:digit:]", 0, 0 },
+		{ "[^'''''''{(\?:178,}e{,16}$QQQQQQQQQQQQQQQQQQQQQQQ$])", 0,
+		  0 },
+		{ "[^(\?>@K*)(\?#d18]{78,}B)[:digit:]{-193,}=wg{,59}", 0, 0 },
+		{ "[^.{156,}!(\?<=!!!!!!!!!!!!!!(\?{!(\?(!!!!!!!!!!!!!)})"
+		  "TTTTTTTTTTTTTTTTTTTTTTTTTTTTT[^}}}}}}}}}}}})}}}}}}}}}}}}}]])"
+		  "{}^L#%-{}FC",
+		  0, 0 },
+		{ "(eeeee{-169,-100}-fa[:upperword:]N)$Nellllllllllllll", 1,
+		  0 },
+		{ "[[(\?!())\?[(\?!:alnum:]e{,28}M])[:punct:]"
+		  "CCCCCCCCCCCCCCCCCCCC]{-150,}{-167}",
+		  0, 0 },
+		{ "[[@[@(\?#@[@]P]Z{')]{-186,117}]+)7f-", 0, 0 },
+		{ "\\Q+kD}]AEM)u ", 0, 0 },
+		{ "([(\?{(\?=:::::::::::::&){,210}]^})P{-31,}8[:space:]C[:"
+		  "alnum:][:a(scii:]z|[:upperword:])[:alnum:][:graph:])zr~Zk",
+		  1, 0 },
+		{ ".[:space:]e[:g(\?{(\?{raph:]})})@@@@@@@@@@@@@wb|~k", 0, 0 },
+		{ "()ooooooooo\"\"\"\"\"\"\"\"\"\"\"\"\"\"\"\"\"\"[:graph:]", 1,
+		  0 },
+		{ "[^64h(\?(@Eyw][:xdi[git:]pP%%%%%u(uuu[:up[perword:]`8Utdh{)}"
+		  "]]))lW[:punct:]W.hhhhhhhhhhhhhhhhhhhhhhhh'm<<}O8`ZXtG.$",
+		  1, 0 },
+		{ "BPP[:digit:]bbbbbbbbbbb(bb)S+[:alnum:]", 1, 0 },
+		{ "um.[:ascii((\?#\?!:])*)+KKKKKKKKKKKKKKKKKKKKKKKKKS.=<Bf", 0,
+		  0 },
+		{ "", -1, 0 },
+		{ "(()$[:lowerprint:][:s[pace:]2]bbbbbbbbbyoooooooooooooooooo*{"
+		  "39,}$')qV`AcH>,eDl",
+		  -1, 0 },
+		{ "(()[^])e{-241,}", -1, 0 },
+		{ "()[:alpha:]rliiiiiiii[:alnum:]Mb*QW9N.>\?{115,}&u*j", -1,
+		  0 },
+		{ "()[]p", -1, 0 },
+		{ "(I[^]pfL)$[:punct:]", -1, 0 },
+		{ "([])>>>>>>>>>>[:alnum:]", -1, 0 },
+		{ "([])O\\\\\\\\\\\\\\fffffffffffffffffffffff=s6jCZy/"
+		  "b+ir2'*{151,}",
+		  -1, 0 },
+		{ "([])nnnnnnnnnnnnnnnnnnnnnnnnnn[:xdigit:]^N$f", -1, 0 },
+		{ "([]M)[:lowerprint:]a(pg$Z[:punct:])77777777777.", -1, 0 },
+		{ "([]XXXXXXXXXXXXXXXXXXXXXX-===========)", -1, 0 },
+		{ "([]lkX{-224}[:blankcntrl:]$gPKIZlSC#F@XX "
+		  "I'^}{234}yZm)uuuuuuuuuuuuuuuuuuuuuurS",
+		  -1, 0 },
+		{ "([^0kYkg9])IIIIIIIIIIIIIIIIIIIIII/"
+		  "{(192,-118}l+FoSD6\?A)c[:xdigit:]`````````````````e-{-4,-"
+		  "170}x{4620}Z[:upperword:]",
+		  -1, 0 },
+		{ "([^[^[^()(\?>){}B]XYF+#[:alpha:]{-85((,-55[^}t]n).{,-33}]]("
+		  "bQJ!|O+{175,})RFh)Z+^.{137,}:VpP[:alpha:]-MceqVVkkkk("
+		  "kkkkkkkkkkkkkkkkkk)"
+		  "\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?{-"
+		  "115,-67})``````````````````````````````",
+		  -1, 0 },
+		{ "([^]EzU[:alnum:]+^^^^^^^^^^^^^^^^^^^)[:xdigit:]HHHHHHHH$"
+		  "66666666666666666666666666666666UUUUUUUUUUUUUUUUUUUUL{}iiii{"
+		  "-76}X",
+		  -1, 0 },
+		{ "([^]~~~~~~~~~~{240,})]NOp", -1, 0 },
+		{ "(sb)[:digit:]VVVVVVVVx{9569}52,|]", -1, 0 },
+		{ "(x{19762}){}", -1, 0 },
+		{ "-[:xdigit:][]", -1, 0 },
+		{ "121|", -1, 0 },
+		{ "141[:xdigit:][:lowerprint:]{24}{59,191}[:digit:]/", -1, 0 },
+		{ "G[^],,,,,,,,,,,,,+\"DiX", -1, 0 },
+		{ "Gm(ho9:\"8{-188,-200}Z[:blankcntrl:]{,171}"
+		  "\?\?\?\?\?\?\?\?\?\?\?[:blankcntrl:]LLLLLLLLLLLLLLLLLLLLLLL{"
+		  "}^[:graph:][:blankc(\?#ntrl:])w",
+		  -1, 0 },
+		{ "N\"\"\"\"\"\"\"-------------------------|[:alnum:]"
+		  "AAAAAAAAAAAAAAAAAAAAf\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?",
+		  -1, 0 },
+		{ "U{-30,}^\?\?\?", -1, 0 },
+		{ "W^*04rAY(Ee*>[^o3[]]_)", -1, 0 },
+		{ "X[^]}*C[:alnum:]", -1, 0 },
+		{ "[${,-3}]+^\?[|x8A|][:space:]'''''['''''"
+		  "JJJJJJJJJJJJJJJJJJJJJJJJJJJJJyl}.Y7G]",
+		  -1, 0 },
+		{ "[()&[&&&]\?\?["
+		  "\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?"
+		  "pg%k8ug`Wqk4|NR{h[CK5Ez=]jHpQw&`{:]{,91}D",
+		  -1, 0 },
+		{ "[(\?#(\?:)[)([\?>)(\?>(\?:[:alnum:])]G]{85}[^)w]N]gYrUs|",
+		  -1, 0 },
+		{ "[(\?<=)[:digit:]\?]{152,}VR|", -1, 0 },
+		{ "[****(\?>**********(\?<!*******Q)Vr){[^25,}*:"
+		  "FFFFFFFFFFFFFFFFFFFFFFFF(\?{FFFF(({}D]|",
+		  -1, 0 },
+		{ "[:ascii:]+{124,}:*]\?$-{92}D[:lowerprint:]``````````````````"
+		  "```",
+		  -1, 0 },
+		{ "[:ascii:]\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?A<", -1, 0 },
+		{ "[:blankcntrl:]p\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?$"
+		  "\?TTTTTTTTTTTTTTTTT[:ascii:][:upperword:]",
+		  -1, 0 },
+		{ "[:punct:]{254}DDDDDDDDDDDDDDD@[:alpha:]Z\?\?-----R", -1, 0 },
+		{ "[:upperword:]J\?\?nqCAdfyW5", -1, 0 },
+		{ "[:upperword:]{-39}|", -1, 0 },
+		{ "[:xdigit:]^\?", -1, 0 },
+		{ "[Z*e ]NdmP\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?\?", -1, 0 },
+		{ "[[:punct:]q]ex{15625}-", -1, 0 },
+		{ "[[[^([^L((\?{b(\?=C\?]-134{,-207}[:ascii:]Hz}XIz}|", -1, 0 },
+		{ "[[^V(\?:(\?<!(\?>))TTTTTTTTTTTTTTTTTTTTTTT)[:punct:][:digit:"
+		  "]]GGGGGGGGGGGGGGGGGGGGG,]|.{-224}{96}{239,}1",
+		  -1, 0 },
+		{ "[[^^PP]{,-222}{182}{141}]zFD}-.", -1, 0 },
+		{ "[] Hn&[:xdigit:][:upperword:]f", -1, 0 },
+		{ "[]$.B", -1, 0 },
+		{ "[]&&&&&&&&&&&&&&&&&&&&&&&", -1, 0 },
+		{ "[]()[:xdigit:]er063{132,140}$", -1, 0 },
+		{ "[]+1434", -1, 0 },
+		{ "[]-", -1, 0 },
+		{ "[]-#yyK", -1, 0 },
+		{ "[]-(S$5)AxbdTKO[:alnum:]", -1, 0 },
+		{ "[]2883", -1, 0 },
+		{ "[]2dhd-[:alpha:]"
+		  "sssssssssssssssss55555555555555555555555555555555Z[:punct:]",
+		  -1, 0 },
+		{ "[]4", -1, 0 },
+		{ "[]44444444444444444G", -1, 0 },
+		{ "[]\?", -1, 0 },
+		{ "[]A", -1, 0 },
+		{ "[]Gap8bc", -1, 0 },
+		{ "[]OOOO", -1, 0 },
+		{ "[]PP", -1, 0 },
+		{ "[]QQ", -1, 0 },
+		{ "[]WaFaGO,o", -1, 0 },
+		{ "[]Z", -1, 0 },
+		{ "[][:alpha:]|[:digit:]Ls$I-Ff~+xA3e", -1, 0 },
+		{ "[][:ascii:]-218", -1, 0 },
+		{ "[][:ascii:]N}}}}}}}}}}}}}}}-{137,}8682", -1, 0 },
+		{ "[][:lowerprint:]Ur", -1, 0 },
+		{ "[][:space:]15097", -1, 0 },
+		{ "[][:xdigit:]", -1, 0 },
+		{ "[]dpSSSSSSSS", -1, 0 },
+		{ "[]e13768", -1, 0 },
+		{ "[]gT", -1, 0 },
+		{ "[]h", -1, 0 },
+		{ "[]n", -1, 0 },
+		{ "[]vvvvvvvvvvvvvvvvvvvvvvvvvv*[:xdigit:]", -1, 0 },
+		{ "[]{,-212}1111111111111111111C3821", -1, 0 },
+		{ "[]{-128,}hc", -1, 0 },
+		{ "[]{-181,}&[:xdigit:].\?}}}}}}}}}}}}}}}}}}}}}}", -1, 0 },
+		{ "[]{}F&}i`7|ZAH", -1, 0 },
+		{ "[^(\?())u{196,}pP][r^ndddddddddddddddddddddd]{31,246}\?J",
+		  -1, 0 },
+		{ "[^.ii.1-S]lwwwwwwwwwwwwwwwwww[^wwwwwwwwwwwwww[:alnum:]DOpP+<"
+		  "N][^]44{179}{-194,56}",
+		  -1, 0 },
+		{ "[^2[:alnum:]]\?t\?\?", -1, 0 },
+		{ "[^[((\?{[^^<<<<(\?(\?<!{)})(\?<!]{,184}{-213}|", -1, 0 },
+		{ "[^[^[]\?{89,}PPsvf{[:space:]]]vd{161,}", -1, 0 },
+		{ "[^[^].]+{0}s", -1, 0 },
+		{ "[^]${}", -1, 0 },
+		{ "[^]([:punct:]),%[:xdigit:]w^0\?{-233}", -1, 0 },
+		{ "[^]-", -1, 0 },
+		{ "[^].^", -1, 0 },
+		{ "[^]6743", -1, 0 },
+		{ "[^]JD", -1, 0 },
+		{ "[^]N=[:upperword:]zzzzzzzzzzzzzzzzz.", -1, 0 },
+		{ "[^]OLz_6", -1, 0 },
+		{ "[^]PP[:digit:]0eBEx=", -1, 0 },
+		{ "[^]SHzuKp", -1, 0 },
+		{ "[^][:upperword:]{111}-TpmXw", -1, 0 },
+		{ "[^]^''''''''z{-73,}", -1, 0 },
+		{ "[^]^{,141}e", -1, 0 },
+		{ "[^]aaaaaaaaaaaaaaaaaaa{-98,43}", -1, 0 },
+		{ "[^]f", -1, 0 },
+		{ "[^]l", -1, 0 },
+		{ "[^]n\"Wt", -1, 0 },
+		{ "[^]pPZ\?q+m0LJ+", -1, 0 },
+		{ "[^]p[:upperword:]L:", -1, 0 },
+		{ "[^]q\?{,-18}-", -1, 0 },
+		{ "[^]s[:space:(\?<=]$", -1, 0 },
+		{ "[^]{,58}t", -1, 0 },
+		{ "[^]{255,}JJJJJJJJJJJJJJJJJJJJJJJJJJ", -1, 0 },
+		{ "[^]{45}", -1, 0 },
+		{ "[^]{W", -1, 0 },
+		{ "[^]{}{-22}", -1, 0 },
+		{ "[^]{}{}{}[:xdigit:]+", -1, 0 },
+		{ "[^]|9{,-108}{}.LVIJJJJJJJJJJJJJJJPP", -1, 0 },
+		{ "[^{,-254}]|", -1, 0 },
+		{ "[o(\?{(\?<=}[))f++++++++++++++++"
+		  "777777777777777777777777yzPPs]"
+		  "\?\?dRRRRRRRRRRRRRRRRRRRRRRRRRRRR&]>%fffffffffff",
+		  -1, 0 },
+		{ "aW|", -1, 0 },
+		{ "cT{}[]C^r2``tm", -1, 0 },
+		{ "kkkkkkkkkkkkkkkkkkkkkkk[:blankcntrl:]|{}3{26,}{151,}[:punct:"
+		  "]JJJlH$gP%(2WUE%%%%%%%%%%%%%%%%%%%%a){ibf{}\?",
+		  -1, 0 },
+		{ "lZ\?\?\?\?\?\?\?\?\?\?\?-P2eZt[:punct:]", -1, 0 },
+		{ "vF3qn[^]N.", -1, 0 },
+		{ "wwwwwwwwwwwwww{-176,}275[^]>."
+		  "UUUUUUUUUUUUUUUUUUUUeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee2$Yd",
+		  -1, 0 },
+		{ "{-197,223}bf]]]]]]]]]]\?&}/s\?\?~c", -1, 0 },
+		{ "{-37,}EpP|", -1, 0 },
+		{ "{}@]a[][:xdigit:]z{a", -1, 0 },
+		{ "}02|", -1, 0 },
+		{ "}}}}}}}}}(}}){}[llll]^N|", -1, 0 },
+	};
+	unsigned int i;
+	int r;
+
+	UNUSED(state);
+
+#ifdef HAVE_REGEX_H
+	/*
+	 * Check if we get the expected response.
+	 */
+	for (i = 0; i < sizeof(tests) / sizeof(*tests); i++) {
+		regex_t preg;
+
+		memset(&preg, 0, sizeof(preg));
+		r = regcomp(&preg, tests[i].expression, REG_EXTENDED);
+		if (((r != 0 && tests[i].expect != -1) ||
+		     (r == 0 && tests[i].expect == -1)) &&
+		    !tests[i].exception)
+		{
+			if (verbose) {
+				print_error("regcomp(%s) -> %s expected %s\n",
+					    tests[i].expression,
+					    r != 0 ? "bad" : "good",
+					    tests[i].expect == -1 ? "bad"
+								  : "good");
+			}
+		} else if (r == 0 &&
+			   preg.re_nsub != (unsigned int)tests[i].expect &&
+			   !tests[i].exception)
+		{
+			if (verbose) {
+				print_error("%s preg.re_nsub %lu expected %d\n",
+					    tests[i].expression,
+					    (unsigned long)preg.re_nsub,
+					    tests[i].expect);
+			}
+			tests[i].expect = preg.re_nsub;
+		}
+		if (r == 0) {
+			regfree(&preg);
+		}
+	}
+#endif /* ifdef HAVE_REGEX_H */
+
+	/*
+	 * Check if we get the expected response.
+	 */
+	for (i = 0; i < sizeof(tests) / sizeof(*tests); i++) {
+		r = isc_regex_validate(tests[i].expression);
+		if (r != tests[i].expect) {
+			print_error("# %s -> %d expected %d\n",
+				    tests[i].expression, r, tests[i].expect);
+		}
+		assert_int_equal(r, tests[i].expect);
+	}
+}
+
+int
+main(int argc, char **argv) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(regex_validate),
+	};
+	int c;
+
+	while ((c = isc_commandline_parse(argc, argv, "v")) != -1) {
+		switch (c) {
+		case 'v':
+			verbose = true;
+			break;
+		default:
+			break;
+		}
+	}
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/result_test.c b/lib/isc/tests/result_test.c
new file mode 100644
index 0000000..a0f6702
--- /dev/null
+++ b/lib/isc/tests/result_test.c
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/result.h>
+#include <isc/util.h>
+
+#include <pk11/result.h>
+
+/* convert result to identifier string */
+static void
+isc_result_toid_test(void **state) {
+	const char *id;
+
+	UNUSED(state);
+
+	id = isc_result_toid(ISC_R_SUCCESS);
+	assert_string_equal("ISC_R_SUCCESS", id);
+
+	id = isc_result_toid(ISC_R_FAILURE);
+	assert_string_equal("ISC_R_FAILURE", id);
+}
+
+/* convert result to description string */
+static void
+isc_result_totext_test(void **state) {
+	const char *str;
+
+	UNUSED(state);
+
+	str = isc_result_totext(ISC_R_SUCCESS);
+	assert_string_equal("success", str);
+
+	str = isc_result_totext(ISC_R_FAILURE);
+	assert_string_equal("failure", str);
+}
+
+/* check tables are populated */
+static void
+tables(void **state) {
+	const char *str;
+	isc_result_t result;
+
+	UNUSED(state);
+
+	pk11_result_register();
+
+	for (result = 0; result < ISC_R_NRESULTS; result++) {
+		str = isc_result_toid(result);
+		assert_non_null(str);
+		assert_string_not_equal(str, "(result code text not "
+					     "available)");
+
+		str = isc_result_totext(result);
+		assert_non_null(str);
+		assert_string_not_equal(str, "(result code text not "
+					     "available)");
+	}
+
+	str = isc_result_toid(result);
+	assert_non_null(str);
+	assert_string_equal(str, "(result code text not available)");
+
+	str = isc_result_totext(result);
+	assert_non_null(str);
+	assert_string_equal(str, "(result code text not available)");
+
+	for (result = ISC_RESULTCLASS_PK11;
+	     result < (ISC_RESULTCLASS_PK11 + PK11_R_NRESULTS); result++)
+	{
+		str = isc_result_toid(result);
+		assert_non_null(str);
+		assert_string_not_equal(str, "(result code text not "
+					     "available)");
+
+		str = isc_result_totext(result);
+		assert_non_null(str);
+		assert_string_not_equal(str, "(result code text not "
+					     "available)");
+	}
+
+	str = isc_result_toid(result);
+	assert_non_null(str);
+	assert_string_equal(str, "(result code text not available)");
+
+	str = isc_result_totext(result);
+	assert_non_null(str);
+	assert_string_equal(str, "(result code text not available)");
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(isc_result_toid_test),
+		cmocka_unit_test(isc_result_totext_test),
+		cmocka_unit_test(tables),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/safe_test.c b/lib/isc/tests/safe_test.c
new file mode 100644
index 0000000..89bd3ba
--- /dev/null
+++ b/lib/isc/tests/safe_test.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/* ! \file */
+
+#if HAVE_CMOCKA
+
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/safe.h>
+#include <isc/util.h>
+
+/* test isc_safe_memequal() */
+static void
+isc_safe_memequal_test(void **state) {
+	UNUSED(state);
+
+	assert_true(isc_safe_memequal("test", "test", 4));
+	assert_true(!isc_safe_memequal("test", "tesc", 4));
+	assert_true(
+		isc_safe_memequal("\x00\x00\x00\x00", "\x00\x00\x00\x00", 4));
+	assert_true(
+		!isc_safe_memequal("\x00\x00\x00\x00", "\x00\x00\x00\x01", 4));
+	assert_true(
+		!isc_safe_memequal("\x00\x00\x00\x02", "\x00\x00\x00\x00", 4));
+}
+
+/* test isc_safe_memwipe() */
+static void
+isc_safe_memwipe_test(void **state) {
+	UNUSED(state);
+
+	/* These should pass. */
+	isc_safe_memwipe(NULL, 0);
+	isc_safe_memwipe((void *)-1, 0);
+
+	/*
+	 * isc_safe_memwipe(ptr, size) should function same as
+	 * memset(ptr, 0, size);
+	 */
+	{
+		char buf1[4] = { 1, 2, 3, 4 };
+		char buf2[4] = { 1, 2, 3, 4 };
+
+		isc_safe_memwipe(buf1, sizeof(buf1));
+		memset(buf2, 0, sizeof(buf2));
+
+		assert_int_equal(memcmp(buf1, buf2, sizeof(buf1)), 0);
+	}
+
+	/*
+	 * Boundary test.
+	 */
+	{
+		char buf1[4] = { 1, 2, 3, 4 };
+		char buf2[4] = { 1, 2, 3, 4 };
+
+		/*
+		 * We wipe 3 elements on purpose, keeping the 4th in
+		 * place.
+		 */
+		isc_safe_memwipe(buf1, 3);
+		memset(buf2, 0, 3);
+
+		assert_int_equal(memcmp(buf1, buf2, sizeof(buf1)), 0);
+	}
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(isc_safe_memequal_test),
+		cmocka_unit_test(isc_safe_memwipe_test),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/siphash_test.c b/lib/isc/tests/siphash_test.c
new file mode 100644
index 0000000..72c7126
--- /dev/null
+++ b/lib/isc/tests/siphash_test.c
@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <sched.h>
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/siphash.h>
+
+#include "../siphash.c"
+
+const uint8_t vectors_sip64[64][8] = {
+	{ 0x31, 0x0e, 0x0e, 0xdd, 0x47, 0xdb, 0x6f, 0x72 },
+	{ 0xfd, 0x67, 0xdc, 0x93, 0xc5, 0x39, 0xf8, 0x74 },
+	{ 0x5a, 0x4f, 0xa9, 0xd9, 0x09, 0x80, 0x6c, 0x0d },
+	{ 0x2d, 0x7e, 0xfb, 0xd7, 0x96, 0x66, 0x67, 0x85 },
+	{ 0xb7, 0x87, 0x71, 0x27, 0xe0, 0x94, 0x27, 0xcf },
+	{ 0x8d, 0xa6, 0x99, 0xcd, 0x64, 0x55, 0x76, 0x18 },
+	{ 0xce, 0xe3, 0xfe, 0x58, 0x6e, 0x46, 0xc9, 0xcb },
+	{ 0x37, 0xd1, 0x01, 0x8b, 0xf5, 0x00, 0x02, 0xab },
+	{ 0x62, 0x24, 0x93, 0x9a, 0x79, 0xf5, 0xf5, 0x93 },
+	{ 0xb0, 0xe4, 0xa9, 0x0b, 0xdf, 0x82, 0x00, 0x9e },
+	{ 0xf3, 0xb9, 0xdd, 0x94, 0xc5, 0xbb, 0x5d, 0x7a },
+	{ 0xa7, 0xad, 0x6b, 0x22, 0x46, 0x2f, 0xb3, 0xf4 },
+	{ 0xfb, 0xe5, 0x0e, 0x86, 0xbc, 0x8f, 0x1e, 0x75 },
+	{ 0x90, 0x3d, 0x84, 0xc0, 0x27, 0x56, 0xea, 0x14 },
+	{ 0xee, 0xf2, 0x7a, 0x8e, 0x90, 0xca, 0x23, 0xf7 },
+	{ 0xe5, 0x45, 0xbe, 0x49, 0x61, 0xca, 0x29, 0xa1 },
+	{ 0xdb, 0x9b, 0xc2, 0x57, 0x7f, 0xcc, 0x2a, 0x3f },
+	{ 0x94, 0x47, 0xbe, 0x2c, 0xf5, 0xe9, 0x9a, 0x69 },
+	{ 0x9c, 0xd3, 0x8d, 0x96, 0xf0, 0xb3, 0xc1, 0x4b },
+	{ 0xbd, 0x61, 0x79, 0xa7, 0x1d, 0xc9, 0x6d, 0xbb },
+	{ 0x98, 0xee, 0xa2, 0x1a, 0xf2, 0x5c, 0xd6, 0xbe },
+	{ 0xc7, 0x67, 0x3b, 0x2e, 0xb0, 0xcb, 0xf2, 0xd0 },
+	{ 0x88, 0x3e, 0xa3, 0xe3, 0x95, 0x67, 0x53, 0x93 },
+	{ 0xc8, 0xce, 0x5c, 0xcd, 0x8c, 0x03, 0x0c, 0xa8 },
+	{ 0x94, 0xaf, 0x49, 0xf6, 0xc6, 0x50, 0xad, 0xb8 },
+	{ 0xea, 0xb8, 0x85, 0x8a, 0xde, 0x92, 0xe1, 0xbc },
+	{ 0xf3, 0x15, 0xbb, 0x5b, 0xb8, 0x35, 0xd8, 0x17 },
+	{ 0xad, 0xcf, 0x6b, 0x07, 0x63, 0x61, 0x2e, 0x2f },
+	{ 0xa5, 0xc9, 0x1d, 0xa7, 0xac, 0xaa, 0x4d, 0xde },
+	{ 0x71, 0x65, 0x95, 0x87, 0x66, 0x50, 0xa2, 0xa6 },
+	{ 0x28, 0xef, 0x49, 0x5c, 0x53, 0xa3, 0x87, 0xad },
+	{ 0x42, 0xc3, 0x41, 0xd8, 0xfa, 0x92, 0xd8, 0x32 },
+	{ 0xce, 0x7c, 0xf2, 0x72, 0x2f, 0x51, 0x27, 0x71 },
+	{ 0xe3, 0x78, 0x59, 0xf9, 0x46, 0x23, 0xf3, 0xa7 },
+	{ 0x38, 0x12, 0x05, 0xbb, 0x1a, 0xb0, 0xe0, 0x12 },
+	{ 0xae, 0x97, 0xa1, 0x0f, 0xd4, 0x34, 0xe0, 0x15 },
+	{ 0xb4, 0xa3, 0x15, 0x08, 0xbe, 0xff, 0x4d, 0x31 },
+	{ 0x81, 0x39, 0x62, 0x29, 0xf0, 0x90, 0x79, 0x02 },
+	{ 0x4d, 0x0c, 0xf4, 0x9e, 0xe5, 0xd4, 0xdc, 0xca },
+	{ 0x5c, 0x73, 0x33, 0x6a, 0x76, 0xd8, 0xbf, 0x9a },
+	{ 0xd0, 0xa7, 0x04, 0x53, 0x6b, 0xa9, 0x3e, 0x0e },
+	{ 0x92, 0x59, 0x58, 0xfc, 0xd6, 0x42, 0x0c, 0xad },
+	{ 0xa9, 0x15, 0xc2, 0x9b, 0xc8, 0x06, 0x73, 0x18 },
+	{ 0x95, 0x2b, 0x79, 0xf3, 0xbc, 0x0a, 0xa6, 0xd4 },
+	{ 0xf2, 0x1d, 0xf2, 0xe4, 0x1d, 0x45, 0x35, 0xf9 },
+	{ 0x87, 0x57, 0x75, 0x19, 0x04, 0x8f, 0x53, 0xa9 },
+	{ 0x10, 0xa5, 0x6c, 0xf5, 0xdf, 0xcd, 0x9a, 0xdb },
+	{ 0xeb, 0x75, 0x09, 0x5c, 0xcd, 0x98, 0x6c, 0xd0 },
+	{ 0x51, 0xa9, 0xcb, 0x9e, 0xcb, 0xa3, 0x12, 0xe6 },
+	{ 0x96, 0xaf, 0xad, 0xfc, 0x2c, 0xe6, 0x66, 0xc7 },
+	{ 0x72, 0xfe, 0x52, 0x97, 0x5a, 0x43, 0x64, 0xee },
+	{ 0x5a, 0x16, 0x45, 0xb2, 0x76, 0xd5, 0x92, 0xa1 },
+	{ 0xb2, 0x74, 0xcb, 0x8e, 0xbf, 0x87, 0x87, 0x0a },
+	{ 0x6f, 0x9b, 0xb4, 0x20, 0x3d, 0xe7, 0xb3, 0x81 },
+	{ 0xea, 0xec, 0xb2, 0xa3, 0x0b, 0x22, 0xa8, 0x7f },
+	{ 0x99, 0x24, 0xa4, 0x3c, 0xc1, 0x31, 0x57, 0x24 },
+	{ 0xbd, 0x83, 0x8d, 0x3a, 0xaf, 0xbf, 0x8d, 0xb7 },
+	{ 0x0b, 0x1a, 0x2a, 0x32, 0x65, 0xd5, 0x1a, 0xea },
+	{ 0x13, 0x50, 0x79, 0xa3, 0x23, 0x1c, 0xe6, 0x60 },
+	{ 0x93, 0x2b, 0x28, 0x46, 0xe4, 0xd7, 0x06, 0x66 },
+	{ 0xe1, 0x91, 0x5f, 0x5c, 0xb1, 0xec, 0xa4, 0x6c },
+	{ 0xf3, 0x25, 0x96, 0x5c, 0xa1, 0x6d, 0x62, 0x9f },
+	{ 0x57, 0x5f, 0xf2, 0x8e, 0x60, 0x38, 0x1b, 0xe5 },
+	{ 0x72, 0x45, 0x06, 0xeb, 0x4c, 0x32, 0x8a, 0x95 }
+};
+
+const uint8_t vectors_hsip32[64][4] = {
+	{ 0xa9, 0x35, 0x9f, 0x5b }, { 0x27, 0x47, 0x5a, 0xb8 },
+	{ 0xfa, 0x62, 0xa6, 0x03 }, { 0x8a, 0xfe, 0xe7, 0x04 },
+	{ 0x2a, 0x6e, 0x46, 0x89 }, { 0xc5, 0xfa, 0xb6, 0x69 },
+	{ 0x58, 0x63, 0xfc, 0x23 }, { 0x8b, 0xcf, 0x63, 0xc5 },
+	{ 0xd0, 0xb8, 0x84, 0x8f }, { 0xf8, 0x06, 0xe7, 0x79 },
+	{ 0x94, 0xb0, 0x79, 0x34 }, { 0x08, 0x08, 0x30, 0x50 },
+	{ 0x57, 0xf0, 0x87, 0x2f }, { 0x77, 0xe6, 0x63, 0xff },
+	{ 0xd6, 0xff, 0xf8, 0x7c }, { 0x74, 0xfe, 0x2b, 0x97 },
+	{ 0xd9, 0xb5, 0xac, 0x84 }, { 0xc4, 0x74, 0x64, 0x5b },
+	{ 0x46, 0x5b, 0x8d, 0x9b }, { 0x7b, 0xef, 0xe3, 0x87 },
+	{ 0xe3, 0x4d, 0x10, 0x45 }, { 0x61, 0x3f, 0x62, 0xb3 },
+	{ 0x70, 0xf3, 0x67, 0xfe }, { 0xe6, 0xad, 0xb8, 0xbd },
+	{ 0x27, 0x40, 0x0c, 0x63 }, { 0x26, 0x78, 0x78, 0x75 },
+	{ 0x4f, 0x56, 0x7b, 0x5f }, { 0x3a, 0xb0, 0xe6, 0x69 },
+	{ 0xb0, 0x64, 0x40, 0x00 }, { 0xff, 0x67, 0x0f, 0xb4 },
+	{ 0x50, 0x9e, 0x33, 0x8b }, { 0x5d, 0x58, 0x9f, 0x1a },
+	{ 0xfe, 0xe7, 0x21, 0x12 }, { 0x33, 0x75, 0x32, 0x59 },
+	{ 0x6a, 0x43, 0x4f, 0x8c }, { 0xfe, 0x28, 0xb7, 0x29 },
+	{ 0xe7, 0x5c, 0xc6, 0xec }, { 0x69, 0x7e, 0x8d, 0x54 },
+	{ 0x63, 0x68, 0x8b, 0x0f }, { 0x65, 0x0b, 0x62, 0xb4 },
+	{ 0xb6, 0xbc, 0x18, 0x40 }, { 0x5d, 0x07, 0x45, 0x05 },
+	{ 0x24, 0x42, 0xfd, 0x2e }, { 0x7b, 0xb7, 0x86, 0x3a },
+	{ 0x77, 0x05, 0xd5, 0x48 }, { 0xd7, 0x52, 0x08, 0xb1 },
+	{ 0xb6, 0xd4, 0x99, 0xc8 }, { 0x08, 0x92, 0x20, 0x2e },
+	{ 0x69, 0xe1, 0x2c, 0xe3 }, { 0x8d, 0xb5, 0x80, 0xe5 },
+	{ 0x36, 0x97, 0x64, 0xc6 }, { 0x01, 0x6e, 0x02, 0x04 },
+	{ 0x3b, 0x85, 0xf3, 0xd4 }, { 0xfe, 0xdb, 0x66, 0xbe },
+	{ 0x1e, 0x69, 0x2a, 0x3a }, { 0xc6, 0x89, 0x84, 0xc0 },
+	{ 0xa5, 0xc5, 0xb9, 0x40 }, { 0x9b, 0xe9, 0xe8, 0x8c },
+	{ 0x7d, 0xbc, 0x81, 0x40 }, { 0x7c, 0x07, 0x8e, 0xc5 },
+	{ 0xd4, 0xe7, 0x6c, 0x73 }, { 0x42, 0x8f, 0xcb, 0xb9 },
+	{ 0xbd, 0x83, 0x99, 0x7a }, { 0x59, 0xea, 0x4a, 0x74 }
+};
+
+static void
+isc_siphash24_test(void **state) {
+	UNUSED(state);
+
+	uint8_t in[64], out[8], key[16];
+	for (size_t i = 0; i < ARRAY_SIZE(key); i++) {
+		key[i] = i;
+	}
+
+	for (size_t i = 0; i < ARRAY_SIZE(in); i++) {
+		in[i] = i;
+		isc_siphash24(key, in, i, out);
+		assert_memory_equal(out, vectors_sip64[i], 8);
+	}
+}
+
+static void
+isc_halfsiphash24_test(void **state) {
+	UNUSED(state);
+
+	uint8_t in[64], out[4], key[16];
+	for (size_t i = 0; i < ARRAY_SIZE(key); i++) {
+		key[i] = i;
+	}
+
+	for (size_t i = 0; i < ARRAY_SIZE(in); i++) {
+		in[i] = i;
+		isc_halfsiphash24(key, in, i, out);
+		assert_memory_equal(out, vectors_hsip32[i], 4);
+	}
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(isc_siphash24_test),
+		cmocka_unit_test(isc_halfsiphash24_test),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/sockaddr_test.c b/lib/isc/tests/sockaddr_test.c
new file mode 100644
index 0000000..6719a6e
--- /dev/null
+++ b/lib/isc/tests/sockaddr_test.c
@@ -0,0 +1,188 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/netaddr.h>
+#include <isc/print.h>
+#include <isc/sockaddr.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+/* test sockaddr hash */
+static void
+sockaddr_hash(void **state) {
+	isc_sockaddr_t addr;
+	struct in_addr in;
+	struct in6_addr in6;
+	unsigned int h1, h2, h3, h4;
+	int ret;
+
+	UNUSED(state);
+
+	in.s_addr = inet_addr("127.0.0.1");
+	isc_sockaddr_fromin(&addr, &in, 1);
+	h1 = isc_sockaddr_hash(&addr, true);
+	h2 = isc_sockaddr_hash(&addr, false);
+	assert_int_not_equal(h1, h2);
+
+	ret = inet_pton(AF_INET6, "::ffff:127.0.0.1", &in6);
+	assert_int_equal(ret, 1);
+	isc_sockaddr_fromin6(&addr, &in6, 1);
+	h3 = isc_sockaddr_hash(&addr, true);
+	h4 = isc_sockaddr_hash(&addr, false);
+	assert_int_equal(h1, h3);
+	assert_int_equal(h2, h4);
+}
+
+/* test isc_sockaddr_isnetzero() */
+static void
+sockaddr_isnetzero(void **state) {
+	isc_sockaddr_t addr;
+	struct in_addr in;
+	struct in6_addr in6;
+	bool r;
+	int ret;
+	size_t i;
+	struct {
+		const char *string;
+		bool expect;
+	} data4[] = {
+		{ "0.0.0.0", true },	      { "0.0.0.1", true },
+		{ "0.0.1.0", true },	      { "0.1.0.0", true },
+		{ "1.0.0.0", false },	      { "0.0.0.127", true },
+		{ "0.0.0.255", true },	      { "127.0.0.1", false },
+		{ "255.255.255.255", false },
+	};
+	/*
+	 * Mapped addresses are currently not netzero.
+	 */
+	struct {
+		const char *string;
+		bool expect;
+	} data6[] = {
+		{ "::ffff:0.0.0.0", false },
+		{ "::ffff:0.0.0.1", false },
+		{ "::ffff:0.0.0.127", false },
+		{ "::ffff:0.0.0.255", false },
+		{ "::ffff:127.0.0.1", false },
+		{ "::ffff:255.255.255.255", false },
+	};
+
+	UNUSED(state);
+
+	for (i = 0; i < sizeof(data4) / sizeof(data4[0]); i++) {
+		in.s_addr = inet_addr(data4[i].string);
+		isc_sockaddr_fromin(&addr, &in, 1);
+		r = isc_sockaddr_isnetzero(&addr);
+		assert_int_equal(r, data4[i].expect);
+	}
+
+	for (i = 0; i < sizeof(data6) / sizeof(data6[0]); i++) {
+		ret = inet_pton(AF_INET6, data6[i].string, &in6);
+		assert_int_equal(ret, 1);
+		isc_sockaddr_fromin6(&addr, &in6, 1);
+		r = isc_sockaddr_isnetzero(&addr);
+		assert_int_equal(r, data6[i].expect);
+	}
+}
+
+/*
+ * test that isc_sockaddr_eqaddrprefix() returns true when prefixes of a
+ * and b are equal, and false when they are not equal
+ */
+static void
+sockaddr_eqaddrprefix(void **state) {
+	struct in_addr ina_a;
+	struct in_addr ina_b;
+	struct in_addr ina_c;
+	isc_sockaddr_t isa_a;
+	isc_sockaddr_t isa_b;
+	isc_sockaddr_t isa_c;
+
+	UNUSED(state);
+
+	assert_true(inet_pton(AF_INET, "194.100.32.87", &ina_a) >= 0);
+	assert_true(inet_pton(AF_INET, "194.100.32.80", &ina_b) >= 0);
+	assert_true(inet_pton(AF_INET, "194.101.32.87", &ina_c) >= 0);
+
+	isc_sockaddr_fromin(&isa_a, &ina_a, 0);
+	isc_sockaddr_fromin(&isa_b, &ina_b, 42);
+	isc_sockaddr_fromin(&isa_c, &ina_c, 0);
+
+	assert_true(isc_sockaddr_eqaddrprefix(&isa_a, &isa_b, 0));
+	assert_true(isc_sockaddr_eqaddrprefix(&isa_a, &isa_b, 29));
+	assert_true(isc_sockaddr_eqaddrprefix(&isa_a, &isa_c, 8));
+
+	assert_false(isc_sockaddr_eqaddrprefix(&isa_a, &isa_b, 30));
+	assert_false(isc_sockaddr_eqaddrprefix(&isa_a, &isa_b, 32));
+	assert_false(isc_sockaddr_eqaddrprefix(&isa_a, &isa_c, 16));
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test_setup_teardown(sockaddr_hash, _setup,
+						_teardown),
+		cmocka_unit_test(sockaddr_isnetzero),
+		cmocka_unit_test(sockaddr_eqaddrprefix),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/socket_test.c b/lib/isc/tests/socket_test.c
new file mode 100644
index 0000000..ab19b06
--- /dev/null
+++ b/lib/isc/tests/socket_test.c
@@ -0,0 +1,833 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#if HAVE_CMOCKA
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/atomic.h>
+#include <isc/platform.h>
+#include <isc/print.h>
+#include <isc/socket.h>
+#include <isc/task.h>
+
+#include "../unix/socket_p.h"
+#include "isctest.h"
+
+static bool recv_dscp;
+static unsigned int recv_dscp_value;
+static bool recv_trunc;
+isc_socket_t *s1 = NULL, *s2 = NULL, *s3 = NULL;
+isc_task_t *test_task = NULL;
+
+/*
+ * Helper functions
+ */
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	if (s1 != NULL) {
+		isc_socket_detach(&s1);
+	}
+	if (s2 != NULL) {
+		isc_socket_detach(&s2);
+	}
+	if (s3 != NULL) {
+		isc_socket_detach(&s3);
+	}
+	if (test_task != NULL) {
+		isc_task_detach(&test_task);
+	}
+
+	isc_test_end();
+
+	return (0);
+}
+
+typedef struct {
+	atomic_bool done;
+	isc_result_t result;
+	isc_socket_t *socket;
+} completion_t;
+
+static void
+completion_init(completion_t *completion) {
+	atomic_init(&completion->done, false);
+	completion->socket = NULL;
+}
+
+static void
+accept_done(isc_task_t *task, isc_event_t *event) {
+	isc_socket_newconnev_t *nevent = (isc_socket_newconnev_t *)event;
+	completion_t *completion = event->ev_arg;
+
+	UNUSED(task);
+
+	completion->result = nevent->result;
+	atomic_store(&completion->done, true);
+	if (completion->result == ISC_R_SUCCESS) {
+		completion->socket = nevent->newsocket;
+	}
+
+	isc_event_free(&event);
+}
+
+static void
+event_done(isc_task_t *task, isc_event_t *event) {
+	isc_socketevent_t *sev = NULL;
+	isc_socket_connev_t *connev = NULL;
+	completion_t *completion = event->ev_arg;
+	UNUSED(task);
+
+	switch (event->ev_type) {
+	case ISC_SOCKEVENT_RECVDONE:
+	case ISC_SOCKEVENT_SENDDONE:
+		sev = (isc_socketevent_t *)event;
+		completion->result = sev->result;
+		if ((sev->attributes & ISC_SOCKEVENTATTR_DSCP) != 0) {
+			recv_dscp = true;
+			recv_dscp_value = sev->dscp;
+		} else {
+			recv_dscp = false;
+		}
+		recv_trunc = ((sev->attributes & ISC_SOCKEVENTATTR_TRUNC) != 0);
+		break;
+	case ISC_SOCKEVENT_CONNECT:
+		connev = (isc_socket_connev_t *)event;
+		completion->result = connev->result;
+		break;
+	default:
+		assert_false(true);
+	}
+	atomic_store(&completion->done, true);
+	isc_event_free(&event);
+}
+
+static isc_result_t
+waitfor(completion_t *completion) {
+	int i = 0;
+	while (!atomic_load(&completion->done) && i++ < 5000) {
+		isc_test_nap(1000);
+	}
+	if (atomic_load(&completion->done)) {
+		return (ISC_R_SUCCESS);
+	}
+	return (ISC_R_FAILURE);
+}
+
+static void
+waitbody(void) {
+	isc_test_nap(1000);
+}
+
+static isc_result_t
+waitfor2(completion_t *c1, completion_t *c2) {
+	int i = 0;
+
+	while (!(atomic_load(&c1->done) && atomic_load(&c2->done)) &&
+	       i++ < 5000)
+	{
+		waitbody();
+	}
+	if (atomic_load(&c1->done) && atomic_load(&c2->done)) {
+		return (ISC_R_SUCCESS);
+	}
+	return (ISC_R_FAILURE);
+}
+
+/*
+ * Individual unit tests
+ */
+
+/* Test UDP sendto/recv (IPv4) */
+static void
+udp_sendto_test(void **state) {
+	isc_result_t result;
+	isc_sockaddr_t addr1, addr2;
+	struct in_addr in;
+	char sendbuf[BUFSIZ], recvbuf[BUFSIZ];
+	completion_t completion;
+	isc_region_t r;
+
+	UNUSED(state);
+
+	in.s_addr = inet_addr("127.0.0.1");
+	isc_sockaddr_fromin(&addr1, &in, 0);
+	isc_sockaddr_fromin(&addr2, &in, 0);
+
+	result = isc_socket_create(socketmgr, PF_INET, isc_sockettype_udp, &s1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_bind(s1, &addr1, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_getsockname(s1, &addr1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(isc_sockaddr_getport(&addr1) != 0);
+
+	result = isc_socket_create(socketmgr, PF_INET, isc_sockettype_udp, &s2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_bind(s2, &addr2, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_getsockname(s2, &addr2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(isc_sockaddr_getport(&addr2) != 0);
+
+	result = isc_task_create(taskmgr, 0, &test_task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	snprintf(sendbuf, sizeof(sendbuf), "Hello");
+	r.base = (void *)sendbuf;
+	r.length = strlen(sendbuf) + 1;
+
+	completion_init(&completion);
+	result = isc_socket_sendto(s1, &r, test_task, event_done, &completion,
+				   &addr2, NULL);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+
+	r.base = (void *)recvbuf;
+	r.length = BUFSIZ;
+	completion_init(&completion);
+	result = isc_socket_recv(s2, &r, 1, test_task, event_done, &completion);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+	assert_string_equal(recvbuf, "Hello");
+}
+
+/* Test UDP sendto/recv with duplicated socket */
+static void
+udp_dup_test(void **state) {
+	isc_result_t result;
+	isc_sockaddr_t addr1, addr2;
+	struct in_addr in;
+	char sendbuf[BUFSIZ], recvbuf[BUFSIZ];
+	completion_t completion;
+	isc_region_t r;
+
+	UNUSED(state);
+
+	in.s_addr = inet_addr("127.0.0.1");
+	isc_sockaddr_fromin(&addr1, &in, 0);
+	isc_sockaddr_fromin(&addr2, &in, 0);
+
+	result = isc_socket_create(socketmgr, PF_INET, isc_sockettype_udp, &s1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_bind(s1, &addr1, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_getsockname(s1, &addr1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(isc_sockaddr_getport(&addr1) != 0);
+
+	result = isc_socket_create(socketmgr, PF_INET, isc_sockettype_udp, &s2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_bind(s2, &addr2, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_getsockname(s2, &addr2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(isc_sockaddr_getport(&addr2) != 0);
+
+	result = isc_socket_dup(s2, &s3);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_task_create(taskmgr, 0, &test_task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	snprintf(sendbuf, sizeof(sendbuf), "Hello");
+	r.base = (void *)sendbuf;
+	r.length = strlen(sendbuf) + 1;
+
+	completion_init(&completion);
+	result = isc_socket_sendto(s1, &r, test_task, event_done, &completion,
+				   &addr2, NULL);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+
+	snprintf(sendbuf, sizeof(sendbuf), "World");
+	r.base = (void *)sendbuf;
+	r.length = strlen(sendbuf) + 1;
+
+	completion_init(&completion);
+	result = isc_socket_sendto(s1, &r, test_task, event_done, &completion,
+				   &addr2, NULL);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+
+	r.base = (void *)recvbuf;
+	r.length = BUFSIZ;
+	completion_init(&completion);
+	result = isc_socket_recv(s2, &r, 1, test_task, event_done, &completion);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+	assert_string_equal(recvbuf, "Hello");
+
+	r.base = (void *)recvbuf;
+	r.length = BUFSIZ;
+	completion_init(&completion);
+	result = isc_socket_recv(s3, &r, 1, test_task, event_done, &completion);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+	assert_string_equal(recvbuf, "World");
+}
+
+/* Test UDP sendto/recv (IPv4) */
+static void
+udp_dscp_v4_test(void **state) {
+	isc_result_t result;
+	isc_sockaddr_t addr1, addr2;
+	struct in_addr in;
+	char sendbuf[BUFSIZ], recvbuf[BUFSIZ];
+	completion_t completion;
+	isc_region_t r;
+	isc_socketevent_t *socketevent;
+
+	UNUSED(state);
+
+	in.s_addr = inet_addr("127.0.0.1");
+	isc_sockaddr_fromin(&addr1, &in, 0);
+	isc_sockaddr_fromin(&addr2, &in, 0);
+
+	result = isc_socket_create(socketmgr, PF_INET, isc_sockettype_udp, &s1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_bind(s1, &addr1, ISC_SOCKET_REUSEADDRESS);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_getsockname(s1, &addr1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(isc_sockaddr_getport(&addr1) != 0);
+
+	result = isc_socket_create(socketmgr, PF_INET, isc_sockettype_udp, &s2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_bind(s2, &addr2, ISC_SOCKET_REUSEADDRESS);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_getsockname(s2, &addr2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(isc_sockaddr_getport(&addr2) != 0);
+
+	result = isc_task_create(taskmgr, 0, &test_task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	snprintf(sendbuf, sizeof(sendbuf), "Hello");
+	r.base = (void *)sendbuf;
+	r.length = strlen(sendbuf) + 1;
+
+	completion_init(&completion);
+
+	socketevent = isc_socket_socketevent(
+		test_mctx, s1, ISC_SOCKEVENT_SENDDONE, event_done, &completion);
+	assert_non_null(socketevent);
+
+	if ((isc_net_probedscp() & ISC_NET_DSCPPKTV4) != 0) {
+		socketevent->dscp = 056; /* EF */
+		socketevent->attributes |= ISC_SOCKEVENTATTR_DSCP;
+	} else if ((isc_net_probedscp() & ISC_NET_DSCPSETV4) != 0) {
+		isc_socket_dscp(s1, 056); /* EF */
+		socketevent->dscp = 0;
+		socketevent->attributes &= ~ISC_SOCKEVENTATTR_DSCP;
+	}
+
+	recv_dscp = false;
+	recv_dscp_value = 0;
+
+	result = isc_socket_sendto2(s1, &r, test_task, &addr2, NULL,
+				    socketevent, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+
+	r.base = (void *)recvbuf;
+	r.length = BUFSIZ;
+	completion_init(&completion);
+	result = isc_socket_recv(s2, &r, 1, test_task, event_done, &completion);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+	assert_string_equal(recvbuf, "Hello");
+
+	if ((isc_net_probedscp() & ISC_NET_DSCPRECVV4) != 0) {
+		assert_true(recv_dscp);
+		assert_int_equal(recv_dscp_value, 056);
+	} else {
+		assert_false(recv_dscp);
+	}
+}
+
+/* Test UDP sendto/recv (IPv6) */
+static void
+udp_dscp_v6_test(void **state) {
+	isc_result_t result;
+	isc_sockaddr_t addr1, addr2;
+	struct in6_addr in6;
+	char sendbuf[BUFSIZ], recvbuf[BUFSIZ];
+	completion_t completion;
+	isc_region_t r;
+	isc_socketevent_t *socketevent;
+	int n;
+
+	UNUSED(state);
+
+	n = inet_pton(AF_INET6, "::1", &in6.s6_addr);
+	assert_true(n == 1);
+	isc_sockaddr_fromin6(&addr1, &in6, 0);
+	isc_sockaddr_fromin6(&addr2, &in6, 0);
+
+	result = isc_socket_create(socketmgr, PF_INET6, isc_sockettype_udp,
+				   &s1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_bind(s1, &addr1, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_getsockname(s1, &addr1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(isc_sockaddr_getport(&addr1) != 0);
+
+	result = isc_socket_create(socketmgr, PF_INET6, isc_sockettype_udp,
+				   &s2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_bind(s2, &addr2, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_getsockname(s2, &addr2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(isc_sockaddr_getport(&addr2) != 0);
+
+	result = isc_task_create(taskmgr, 0, &test_task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	snprintf(sendbuf, sizeof(sendbuf), "Hello");
+	r.base = (void *)sendbuf;
+	r.length = strlen(sendbuf) + 1;
+
+	completion_init(&completion);
+
+	socketevent = isc_socket_socketevent(
+		test_mctx, s1, ISC_SOCKEVENT_SENDDONE, event_done, &completion);
+	assert_non_null(socketevent);
+
+	if ((isc_net_probedscp() & ISC_NET_DSCPPKTV6) != 0) {
+		socketevent->dscp = 056; /* EF */
+		socketevent->attributes = ISC_SOCKEVENTATTR_DSCP;
+	} else if ((isc_net_probedscp() & ISC_NET_DSCPSETV6) != 0) {
+		isc_socket_dscp(s1, 056); /* EF */
+	}
+
+	recv_dscp = false;
+	recv_dscp_value = 0;
+
+	result = isc_socket_sendto2(s1, &r, test_task, &addr2, NULL,
+				    socketevent, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+
+	r.base = (void *)recvbuf;
+	r.length = BUFSIZ;
+	completion_init(&completion);
+	result = isc_socket_recv(s2, &r, 1, test_task, event_done, &completion);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+	assert_string_equal(recvbuf, "Hello");
+	if ((isc_net_probedscp() & ISC_NET_DSCPRECVV6) != 0) {
+		assert_true(recv_dscp);
+		assert_int_equal(recv_dscp_value, 056);
+	} else {
+		assert_false(recv_dscp);
+	}
+}
+
+/* Test TCP sendto/recv (IPv4) */
+static void
+tcp_dscp_v4_test(void **state) {
+	isc_result_t result;
+	isc_sockaddr_t addr1;
+	struct in_addr in;
+	char sendbuf[BUFSIZ], recvbuf[BUFSIZ];
+	completion_t completion, completion2;
+	isc_region_t r;
+
+	UNUSED(state);
+
+	in.s_addr = inet_addr("127.0.0.1");
+	isc_sockaddr_fromin(&addr1, &in, 0);
+
+	result = isc_socket_create(socketmgr, PF_INET, isc_sockettype_tcp, &s1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_socket_bind(s1, &addr1, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_getsockname(s1, &addr1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(isc_sockaddr_getport(&addr1) != 0);
+
+	result = isc_socket_listen(s1, 3);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_socket_create(socketmgr, PF_INET, isc_sockettype_tcp, &s2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_task_create(taskmgr, 0, &test_task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	completion_init(&completion2);
+	result = isc_socket_accept(s1, test_task, accept_done, &completion2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	completion_init(&completion);
+	result = isc_socket_connect(s2, &addr1, test_task, event_done,
+				    &completion);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor2(&completion, &completion2);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+	assert_true(atomic_load(&completion2.done));
+	assert_int_equal(completion2.result, ISC_R_SUCCESS);
+	s3 = completion2.socket;
+
+	isc_socket_dscp(s2, 056); /* EF */
+
+	snprintf(sendbuf, sizeof(sendbuf), "Hello");
+	r.base = (void *)sendbuf;
+	r.length = strlen(sendbuf) + 1;
+
+	recv_dscp = false;
+	recv_dscp_value = 0;
+
+	completion_init(&completion);
+	result = isc_socket_sendto(s2, &r, test_task, event_done, &completion,
+				   NULL, NULL);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+
+	r.base = (void *)recvbuf;
+	r.length = BUFSIZ;
+	completion_init(&completion);
+	result = isc_socket_recv(s3, &r, 1, test_task, event_done, &completion);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+	assert_string_equal(recvbuf, "Hello");
+
+	if ((isc_net_probedscp() & ISC_NET_DSCPRECVV4) != 0) {
+		if (recv_dscp) {
+			assert_int_equal(recv_dscp_value, 056);
+		}
+	} else {
+		assert_false(recv_dscp);
+	}
+}
+
+/* Test TCP sendto/recv (IPv6) */
+static void
+tcp_dscp_v6_test(void **state) {
+	isc_result_t result;
+	isc_sockaddr_t addr1;
+	struct in6_addr in6;
+	char sendbuf[BUFSIZ], recvbuf[BUFSIZ];
+	completion_t completion, completion2;
+	isc_region_t r;
+	int n;
+
+	UNUSED(state);
+
+	n = inet_pton(AF_INET6, "::1", &in6.s6_addr);
+	assert_true(n == 1);
+	isc_sockaddr_fromin6(&addr1, &in6, 0);
+
+	result = isc_socket_create(socketmgr, PF_INET6, isc_sockettype_tcp,
+				   &s1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_socket_bind(s1, &addr1, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_getsockname(s1, &addr1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(isc_sockaddr_getport(&addr1) != 0);
+
+	result = isc_socket_listen(s1, 3);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_socket_create(socketmgr, PF_INET6, isc_sockettype_tcp,
+				   &s2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_task_create(taskmgr, 0, &test_task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	completion_init(&completion2);
+	result = isc_socket_accept(s1, test_task, accept_done, &completion2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	completion_init(&completion);
+	result = isc_socket_connect(s2, &addr1, test_task, event_done,
+				    &completion);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor2(&completion, &completion2);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+	assert_true(atomic_load(&completion2.done));
+	assert_int_equal(completion2.result, ISC_R_SUCCESS);
+	s3 = completion2.socket;
+
+	isc_socket_dscp(s2, 056); /* EF */
+
+	snprintf(sendbuf, sizeof(sendbuf), "Hello");
+	r.base = (void *)sendbuf;
+	r.length = strlen(sendbuf) + 1;
+
+	recv_dscp = false;
+	recv_dscp_value = 0;
+
+	completion_init(&completion);
+	result = isc_socket_sendto(s2, &r, test_task, event_done, &completion,
+				   NULL, NULL);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+
+	r.base = (void *)recvbuf;
+	r.length = BUFSIZ;
+	completion_init(&completion);
+	result = isc_socket_recv(s3, &r, 1, test_task, event_done, &completion);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+	assert_string_equal(recvbuf, "Hello");
+
+	if ((isc_net_probedscp() & ISC_NET_DSCPRECVV6) != 0) {
+		/*
+		 * IPV6_RECVTCLASS is undefined for TCP however
+		 * if we do get it it should be the value we set.
+		 */
+		if (recv_dscp) {
+			assert_int_equal(recv_dscp_value, 056);
+		}
+	} else {
+		assert_false(recv_dscp);
+	}
+}
+
+/* probe dscp capabilities */
+static void
+net_probedscp_test(void **state) {
+	unsigned int n;
+
+	UNUSED(state);
+
+	n = isc_net_probedscp();
+	assert_true((n & ~ISC_NET_DSCPALL) == 0);
+
+	/* ISC_NET_DSCPSETV4 MUST be set if any is set. */
+	if (n & (ISC_NET_DSCPPKTV4 | ISC_NET_DSCPRECVV4)) {
+		assert_true((n & ISC_NET_DSCPSETV4) != 0);
+	}
+
+	/* ISC_NET_DSCPSETV6 MUST be set if any is set. */
+	if (n & (ISC_NET_DSCPPKTV6 | ISC_NET_DSCPRECVV6)) {
+		assert_true((n & ISC_NET_DSCPSETV6) != 0);
+	}
+
+#if 0
+	fprintf(stdout,"IPv4:%s%s%s\n",
+		(n & ISC_NET_DSCPSETV4) ? " set" : "none",
+		(n & ISC_NET_DSCPPKTV4) ? " packet" : "",
+		(n & ISC_NET_DSCPRECVV4) ? " receive" : "");
+
+	fprintf(stdout,"IPv6:%s%s%s\n",
+		(n & ISC_NET_DSCPSETV6) ? " set" : "none",
+		(n & ISC_NET_DSCPPKTV6) ? " packet" : "",
+		(n & ISC_NET_DSCPRECVV6) ? " receive" : "");
+#endif /* if 0 */
+}
+
+/* Test UDP truncation detection */
+static void
+udp_trunc_test(void **state) {
+	isc_result_t result;
+	isc_sockaddr_t addr1, addr2;
+	struct in_addr in;
+	char sendbuf[BUFSIZ * 2], recvbuf[BUFSIZ];
+	completion_t completion;
+	isc_region_t r;
+	isc_socketevent_t *socketevent;
+
+	UNUSED(state);
+
+	in.s_addr = inet_addr("127.0.0.1");
+	isc_sockaddr_fromin(&addr1, &in, 0);
+	isc_sockaddr_fromin(&addr2, &in, 0);
+
+	result = isc_socket_create(socketmgr, PF_INET, isc_sockettype_udp, &s1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_bind(s1, &addr1, ISC_SOCKET_REUSEADDRESS);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_getsockname(s1, &addr1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(isc_sockaddr_getport(&addr1) != 0);
+	result = isc_socket_create(socketmgr, PF_INET, isc_sockettype_udp, &s2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_bind(s2, &addr2, ISC_SOCKET_REUSEADDRESS);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_socket_getsockname(s2, &addr2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_true(isc_sockaddr_getport(&addr2) != 0);
+
+	result = isc_task_create(taskmgr, 0, &test_task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/*
+	 * Send a message that will not be truncated.
+	 */
+	memset(sendbuf, 0xff, sizeof(sendbuf));
+	snprintf(sendbuf, sizeof(sendbuf), "Hello");
+	r.base = (void *)sendbuf;
+	r.length = strlen(sendbuf) + 1;
+
+	completion_init(&completion);
+
+	socketevent = isc_socket_socketevent(
+		test_mctx, s1, ISC_SOCKEVENT_SENDDONE, event_done, &completion);
+	assert_non_null(socketevent);
+
+	result = isc_socket_sendto2(s1, &r, test_task, &addr2, NULL,
+				    socketevent, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+
+	r.base = (void *)recvbuf;
+	r.length = BUFSIZ;
+	completion_init(&completion);
+	recv_trunc = false;
+	result = isc_socket_recv(s2, &r, 1, test_task, event_done, &completion);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+	assert_string_equal(recvbuf, "Hello");
+	assert_false(recv_trunc);
+
+	/*
+	 * Send a message that will be truncated.
+	 */
+	memset(sendbuf, 0xff, sizeof(sendbuf));
+	snprintf(sendbuf, sizeof(sendbuf), "Hello");
+	r.base = (void *)sendbuf;
+	r.length = sizeof(sendbuf);
+
+	completion_init(&completion);
+
+	socketevent = isc_socket_socketevent(
+		test_mctx, s1, ISC_SOCKEVENT_SENDDONE, event_done, &completion);
+	assert_non_null(socketevent);
+
+	result = isc_socket_sendto2(s1, &r, test_task, &addr2, NULL,
+				    socketevent, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+
+	r.base = (void *)recvbuf;
+	r.length = BUFSIZ;
+	completion_init(&completion);
+	recv_trunc = false;
+	result = isc_socket_recv(s2, &r, 1, test_task, event_done, &completion);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	waitfor(&completion);
+	assert_true(atomic_load(&completion.done));
+	assert_int_equal(completion.result, ISC_R_SUCCESS);
+	assert_string_equal(recvbuf, "Hello");
+	assert_true(recv_trunc);
+}
+
+/*
+ * Main
+ */
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test_setup_teardown(udp_sendto_test, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(udp_dup_test, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(tcp_dscp_v4_test, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(tcp_dscp_v6_test, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(udp_dscp_v4_test, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(udp_dscp_v6_test, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(net_probedscp_test, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(udp_trunc_test, _setup,
+						_teardown),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/stats_test.c b/lib/isc/tests/stats_test.c
new file mode 100644
index 0000000..89b2462
--- /dev/null
+++ b/lib/isc/tests/stats_test.c
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/mem.h>
+#include <isc/result.h>
+#include <isc/stats.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+/* test stats */
+static void
+isc_stats_basic_test(void **state) {
+	isc_stats_t *stats = NULL;
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_stats_create(test_mctx, &stats, 4);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_stats_ncounters(stats), 4);
+
+	/* Default all 0. */
+	for (int i = 0; i < isc_stats_ncounters(stats); i++) {
+		assert_int_equal(isc_stats_get_counter(stats, i), 0);
+	}
+
+	/* Test increment. */
+	for (int i = 0; i < isc_stats_ncounters(stats); i++) {
+		isc_stats_increment(stats, i);
+		assert_int_equal(isc_stats_get_counter(stats, i), 1);
+		isc_stats_increment(stats, i);
+		assert_int_equal(isc_stats_get_counter(stats, i), 2);
+	}
+
+	/* Test decrement. */
+	for (int i = 0; i < isc_stats_ncounters(stats); i++) {
+		isc_stats_decrement(stats, i);
+		assert_int_equal(isc_stats_get_counter(stats, i), 1);
+		isc_stats_decrement(stats, i);
+		assert_int_equal(isc_stats_get_counter(stats, i), 0);
+	}
+
+	/* Test set. */
+	for (int i = 0; i < isc_stats_ncounters(stats); i++) {
+		isc_stats_set(stats, i, i);
+		assert_int_equal(isc_stats_get_counter(stats, i), i);
+	}
+
+	/* Test update if greater. */
+	for (int i = 0; i < isc_stats_ncounters(stats); i++) {
+		isc_stats_update_if_greater(stats, i, i);
+		assert_int_equal(isc_stats_get_counter(stats, i), i);
+		isc_stats_update_if_greater(stats, i, i + 1);
+		assert_int_equal(isc_stats_get_counter(stats, i), i + 1);
+	}
+
+	/* Test resize. */
+	isc_stats_resize(&stats, 3);
+	assert_int_equal(isc_stats_ncounters(stats), 4);
+	isc_stats_resize(&stats, 4);
+	assert_int_equal(isc_stats_ncounters(stats), 4);
+	isc_stats_resize(&stats, 5);
+	assert_int_equal(isc_stats_ncounters(stats), 5);
+
+	/* Existing counters are retained */
+	for (int i = 0; i < isc_stats_ncounters(stats); i++) {
+		uint32_t expect = i + 1;
+		if (i == 4) {
+			expect = 0;
+		}
+		assert_int_equal(isc_stats_get_counter(stats, i), expect);
+	}
+
+	isc_stats_detach(&stats);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test_setup_teardown(isc_stats_basic_test, _setup,
+						_teardown),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/symtab_test.c b/lib/isc/tests/symtab_test.c
new file mode 100644
index 0000000..4b82308
--- /dev/null
+++ b/lib/isc/tests/symtab_test.c
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/print.h>
+#include <isc/symtab.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+static void
+undefine(char *key, unsigned int type, isc_symvalue_t value, void *arg) {
+	UNUSED(arg);
+
+	assert_int_equal(type, 1);
+	isc_mem_free(test_mctx, key);
+	isc_mem_free(test_mctx, value.as_pointer);
+}
+
+/* test symbol table growth */
+static void
+symtab_grow(void **state) {
+	isc_result_t result;
+	isc_symtab_t *st = NULL;
+	isc_symvalue_t value;
+	isc_symexists_t policy = isc_symexists_reject;
+	int i;
+
+	UNUSED(state);
+
+	result = isc_symtab_create(test_mctx, 3, undefine, NULL, false, &st);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_non_null(st);
+
+	/* Nothing should be in the table yet */
+
+	/*
+	 * Put 1024 entries in the table (this should necessate
+	 * regrowing the hash table several times
+	 */
+	for (i = 0; i < 1024; i++) {
+		char str[16], *key;
+
+		snprintf(str, sizeof(str), "%04x", i);
+		key = isc_mem_strdup(test_mctx, str);
+		assert_non_null(key);
+		value.as_pointer = isc_mem_strdup(test_mctx, str);
+		assert_non_null(value.as_pointer);
+		result = isc_symtab_define(st, key, 1, value, policy);
+		assert_int_equal(result, ISC_R_SUCCESS);
+		if (result != ISC_R_SUCCESS) {
+			undefine(key, 1, value, NULL);
+		}
+	}
+
+	/*
+	 * Try to put them in again; this should fail
+	 */
+	for (i = 0; i < 1024; i++) {
+		char str[16], *key;
+
+		snprintf(str, sizeof(str), "%04x", i);
+		key = isc_mem_strdup(test_mctx, str);
+		assert_non_null(key);
+		value.as_pointer = isc_mem_strdup(test_mctx, str);
+		assert_non_null(value.as_pointer);
+		result = isc_symtab_define(st, key, 1, value, policy);
+		assert_int_equal(result, ISC_R_EXISTS);
+		undefine(key, 1, value, NULL);
+	}
+
+	/*
+	 * Retrieve them; this should succeed
+	 */
+	for (i = 0; i < 1024; i++) {
+		char str[16];
+
+		snprintf(str, sizeof(str), "%04x", i);
+		result = isc_symtab_lookup(st, str, 0, &value);
+		assert_int_equal(result, ISC_R_SUCCESS);
+		assert_string_equal(str, (char *)value.as_pointer);
+	}
+
+	/*
+	 * Undefine them
+	 */
+	for (i = 0; i < 1024; i++) {
+		char str[16];
+
+		snprintf(str, sizeof(str), "%04x", i);
+		result = isc_symtab_undefine(st, str, 1);
+		assert_int_equal(result, ISC_R_SUCCESS);
+	}
+
+	/*
+	 * Retrieve them again; this should fail
+	 */
+	for (i = 0; i < 1024; i++) {
+		char str[16];
+
+		snprintf(str, sizeof(str), "%04x", i);
+		result = isc_symtab_lookup(st, str, 0, &value);
+		assert_int_equal(result, ISC_R_NOTFOUND);
+	}
+
+	isc_symtab_destroy(&st);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test_setup_teardown(symtab_grow, _setup, _teardown),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/task_test.c b/lib/isc/tests/task_test.c
new file mode 100644
index 0000000..7d7132d
--- /dev/null
+++ b/lib/isc/tests/task_test.c
@@ -0,0 +1,1595 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <inttypes.h>
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+
+#include <cmocka.h>
+
+#include <isc/atomic.h>
+#include <isc/cmocka.h>
+#include <isc/commandline.h>
+#include <isc/condition.h>
+#include <isc/managers.h>
+#include <isc/mem.h>
+#include <isc/platform.h>
+#include <isc/print.h>
+#include <isc/task.h>
+#include <isc/time.h>
+#include <isc/timer.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+/* Set to true (or use -v option) for verbose output */
+static bool verbose = false;
+
+static isc_mutex_t lock;
+static isc_condition_t cv;
+
+atomic_int_fast32_t counter;
+static int active[10];
+static atomic_bool done, done2;
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	isc_mutex_init(&lock);
+
+	isc_condition_init(&cv);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_setup2(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	isc_mutex_init(&lock);
+
+	isc_condition_init(&cv);
+
+	/* Two worker threads */
+	result = isc_test_begin(NULL, true, 2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_setup4(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	isc_mutex_init(&lock);
+
+	isc_condition_init(&cv);
+
+	/* Four worker threads */
+	result = isc_test_begin(NULL, true, 4);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+	isc_condition_destroy(&cv);
+
+	return (0);
+}
+
+static void
+set(isc_task_t *task, isc_event_t *event) {
+	atomic_int_fast32_t *value = (atomic_int_fast32_t *)event->ev_arg;
+
+	UNUSED(task);
+
+	isc_event_free(&event);
+	atomic_store(value, atomic_fetch_add(&counter, 1));
+}
+
+#include <isc/thread.h>
+
+static void
+set_and_drop(isc_task_t *task, isc_event_t *event) {
+	atomic_int_fast32_t *value = (atomic_int_fast32_t *)event->ev_arg;
+
+	UNUSED(task);
+
+	isc_event_free(&event);
+	LOCK(&lock);
+	atomic_store(value, atomic_fetch_add(&counter, 1));
+	UNLOCK(&lock);
+}
+
+/* Create a task */
+static void
+create_task(void **state) {
+	isc_result_t result;
+	isc_task_t *task = NULL;
+
+	UNUSED(state);
+
+	result = isc_task_create(taskmgr, 0, &task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_task_destroy(&task);
+	assert_null(task);
+}
+
+/* Process events */
+static void
+all_events(void **state) {
+	isc_result_t result;
+	isc_task_t *task = NULL;
+	isc_event_t *event = NULL;
+	atomic_int_fast32_t a, b;
+	int i = 0;
+
+	UNUSED(state);
+
+	atomic_init(&counter, 1);
+	atomic_init(&a, 0);
+	atomic_init(&b, 0);
+
+	result = isc_task_create(taskmgr, 0, &task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/* First event */
+	event = isc_event_allocate(test_mctx, task, ISC_TASKEVENT_TEST, set, &a,
+				   sizeof(isc_event_t));
+	assert_non_null(event);
+
+	assert_int_equal(atomic_load(&a), 0);
+	isc_task_send(task, &event);
+
+	event = isc_event_allocate(test_mctx, task, ISC_TASKEVENT_TEST, set, &b,
+				   sizeof(isc_event_t));
+	assert_non_null(event);
+
+	assert_int_equal(atomic_load(&b), 0);
+	isc_task_send(task, &event);
+
+	while ((atomic_load(&a) == 0 || atomic_load(&b) == 0) && i++ < 5000) {
+		isc_test_nap(1000);
+	}
+
+	assert_int_not_equal(atomic_load(&a), 0);
+	assert_int_not_equal(atomic_load(&b), 0);
+
+	isc_task_destroy(&task);
+	assert_null(task);
+}
+
+/* Privileged events */
+static void
+privileged_events(void **state) {
+	isc_result_t result;
+	isc_task_t *task1 = NULL, *task2 = NULL;
+	isc_event_t *event = NULL;
+	atomic_int_fast32_t a, b, c, d, e;
+	int i = 0;
+
+	UNUSED(state);
+
+	atomic_init(&counter, 1);
+	atomic_init(&a, -1);
+	atomic_init(&b, -1);
+	atomic_init(&c, -1);
+	atomic_init(&d, -1);
+	atomic_init(&e, -1);
+
+	/*
+	 * Pause the net/task manager so we can fill up the work
+	 * queue without things happening while we do it.
+	 */
+	isc_nm_pause(netmgr);
+	isc_taskmgr_setmode(taskmgr, isc_taskmgrmode_privileged);
+
+	result = isc_task_create(taskmgr, 0, &task1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	isc_task_setname(task1, "privileged", NULL);
+	assert_false(isc_task_getprivilege(task1));
+	isc_task_setprivilege(task1, true);
+	assert_true(isc_task_getprivilege(task1));
+
+	result = isc_task_create(taskmgr, 0, &task2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	isc_task_setname(task2, "normal", NULL);
+	assert_false(isc_task_getprivilege(task2));
+
+	/* First event: privileged */
+	event = isc_event_allocate(test_mctx, task1, ISC_TASKEVENT_TEST, set,
+				   &a, sizeof(isc_event_t));
+	assert_non_null(event);
+
+	assert_int_equal(atomic_load(&a), -1);
+	isc_task_send(task1, &event);
+
+	/* Second event: not privileged */
+	event = isc_event_allocate(test_mctx, task2, ISC_TASKEVENT_TEST, set,
+				   &b, sizeof(isc_event_t));
+	assert_non_null(event);
+
+	assert_int_equal(atomic_load(&b), -1);
+	isc_task_send(task2, &event);
+
+	/* Third event: privileged */
+	event = isc_event_allocate(test_mctx, task1, ISC_TASKEVENT_TEST, set,
+				   &c, sizeof(isc_event_t));
+	assert_non_null(event);
+
+	assert_int_equal(atomic_load(&c), -1);
+	isc_task_send(task1, &event);
+
+	/* Fourth event: privileged */
+	event = isc_event_allocate(test_mctx, task1, ISC_TASKEVENT_TEST, set,
+				   &d, sizeof(isc_event_t));
+	assert_non_null(event);
+
+	assert_int_equal(atomic_load(&d), -1);
+	isc_task_send(task1, &event);
+
+	/* Fifth event: not privileged */
+	event = isc_event_allocate(test_mctx, task2, ISC_TASKEVENT_TEST, set,
+				   &e, sizeof(isc_event_t));
+	assert_non_null(event);
+
+	assert_int_equal(atomic_load(&e), -1);
+	isc_task_send(task2, &event);
+
+	isc_nm_resume(netmgr);
+
+	/* We're waiting for *all* variables to be set */
+	while ((atomic_load(&a) < 0 || atomic_load(&b) < 0 ||
+		atomic_load(&c) < 0 || atomic_load(&d) < 0 ||
+		atomic_load(&e) < 0) &&
+	       i++ < 5000)
+	{
+		isc_test_nap(1000);
+	}
+
+	/*
+	 * We can't guarantee what order the events fire, but
+	 * we do know the privileged tasks that set a, c, and d
+	 * would have fired first.
+	 */
+	assert_true(atomic_load(&a) <= 3);
+	assert_true(atomic_load(&c) <= 3);
+	assert_true(atomic_load(&d) <= 3);
+
+	/* ...and the non-privileged tasks that set b and e, last */
+	assert_true(atomic_load(&b) > 3);
+	assert_true(atomic_load(&e) > 3);
+
+	assert_int_equal(atomic_load(&counter), 6);
+
+	isc_task_setprivilege(task1, false);
+	assert_false(isc_task_getprivilege(task1));
+
+	isc_task_destroy(&task1);
+	assert_null(task1);
+	isc_task_destroy(&task2);
+	assert_null(task2);
+}
+
+/*
+ * Edge case: this tests that the task manager behaves as expected when
+ * we explicitly set it into normal mode *while* running privileged.
+ */
+static void
+privilege_drop(void **state) {
+	isc_result_t result;
+	isc_task_t *task1 = NULL, *task2 = NULL;
+	isc_event_t *event = NULL;
+	atomic_int_fast32_t a, b, c, d, e; /* non valid states */
+	int i = 0;
+
+	UNUSED(state);
+
+	atomic_init(&counter, 1);
+	atomic_init(&a, -1);
+	atomic_init(&b, -1);
+	atomic_init(&c, -1);
+	atomic_init(&d, -1);
+	atomic_init(&e, -1);
+
+	/*
+	 * Pause the net/task manager so we can fill up the work queue
+	 * without things happening while we do it.
+	 */
+	isc_nm_pause(netmgr);
+	isc_taskmgr_setmode(taskmgr, isc_taskmgrmode_privileged);
+
+	result = isc_task_create(taskmgr, 0, &task1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	isc_task_setname(task1, "privileged", NULL);
+	assert_false(isc_task_getprivilege(task1));
+	isc_task_setprivilege(task1, true);
+	assert_true(isc_task_getprivilege(task1));
+
+	result = isc_task_create(taskmgr, 0, &task2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	isc_task_setname(task2, "normal", NULL);
+	assert_false(isc_task_getprivilege(task2));
+
+	/* First event: privileged */
+	event = isc_event_allocate(test_mctx, task1, ISC_TASKEVENT_TEST,
+				   set_and_drop, &a, sizeof(isc_event_t));
+	assert_non_null(event);
+
+	assert_int_equal(atomic_load(&a), -1);
+	isc_task_send(task1, &event);
+
+	/* Second event: not privileged */
+	event = isc_event_allocate(test_mctx, task2, ISC_TASKEVENT_TEST,
+				   set_and_drop, &b, sizeof(isc_event_t));
+	assert_non_null(event);
+
+	assert_int_equal(atomic_load(&b), -1);
+	isc_task_send(task2, &event);
+
+	/* Third event: privileged */
+	event = isc_event_allocate(test_mctx, task1, ISC_TASKEVENT_TEST,
+				   set_and_drop, &c, sizeof(isc_event_t));
+	assert_non_null(event);
+
+	assert_int_equal(atomic_load(&c), -1);
+	isc_task_send(task1, &event);
+
+	/* Fourth event: privileged */
+	event = isc_event_allocate(test_mctx, task1, ISC_TASKEVENT_TEST,
+				   set_and_drop, &d, sizeof(isc_event_t));
+	assert_non_null(event);
+
+	assert_int_equal(atomic_load(&d), -1);
+	isc_task_send(task1, &event);
+
+	/* Fifth event: not privileged */
+	event = isc_event_allocate(test_mctx, task2, ISC_TASKEVENT_TEST,
+				   set_and_drop, &e, sizeof(isc_event_t));
+	assert_non_null(event);
+
+	assert_int_equal(atomic_load(&e), -1);
+	isc_task_send(task2, &event);
+
+	isc_nm_resume(netmgr);
+
+	/* We're waiting for all variables to be set. */
+	while ((atomic_load(&a) == -1 || atomic_load(&b) == -1 ||
+		atomic_load(&c) == -1 || atomic_load(&d) == -1 ||
+		atomic_load(&e) == -1) &&
+	       i++ < 5000)
+	{
+		isc_test_nap(1000);
+	}
+
+	/*
+	 * We need to check that all privilege mode events were fired
+	 * in privileged mode, and non privileged in non-privileged.
+	 */
+	assert_true(atomic_load(&a) <= 3);
+	assert_true(atomic_load(&c) <= 3);
+	assert_true(atomic_load(&d) <= 3);
+
+	/* ...and neither of the non-privileged tasks did... */
+	assert_true(atomic_load(&b) > 3);
+	assert_true(atomic_load(&e) > 3);
+
+	/* ...but all five of them did run. */
+	assert_int_equal(atomic_load(&counter), 6);
+
+	isc_task_destroy(&task1);
+	assert_null(task1);
+	isc_task_destroy(&task2);
+	assert_null(task2);
+}
+
+static void
+sleep_cb(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+	int p = *(int *)event->ev_arg;
+	if (p == 1) {
+		/*
+		 * Signal the main thread that we're running, so that
+		 * it can trigger the race.
+		 */
+		LOCK(&lock);
+		atomic_store(&done2, true);
+		SIGNAL(&cv);
+		UNLOCK(&lock);
+		/*
+		 * Wait for the operations in the main thread to be finished.
+		 */
+		LOCK(&lock);
+		while (!atomic_load(&done)) {
+			WAIT(&cv, &lock);
+		}
+		UNLOCK(&lock);
+	} else {
+		/*
+		 * Wait for the operations in the main thread to be finished.
+		 */
+		LOCK(&lock);
+		atomic_store(&done2, true);
+		SIGNAL(&cv);
+		UNLOCK(&lock);
+	}
+	isc_event_free(&event);
+}
+
+static void
+pause_unpause(void **state) {
+	isc_result_t result;
+	isc_task_t *task = NULL;
+	isc_event_t *event1, *event2 = NULL;
+	UNUSED(state);
+	atomic_store(&done, false);
+	atomic_store(&done2, false);
+
+	result = isc_task_create(taskmgr, 0, &task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	event1 = isc_event_allocate(test_mctx, task, ISC_TASKEVENT_TEST,
+				    sleep_cb, &(int){ 1 }, sizeof(isc_event_t));
+	assert_non_null(event1);
+	event2 = isc_event_allocate(test_mctx, task, ISC_TASKEVENT_TEST,
+				    sleep_cb, &(int){ 2 }, sizeof(isc_event_t));
+	assert_non_null(event2);
+	isc_task_send(task, &event1);
+	isc_task_send(task, &event2);
+	/* Wait for event1 to be running */
+	LOCK(&lock);
+	while (!atomic_load(&done2)) {
+		WAIT(&cv, &lock);
+	}
+	UNLOCK(&lock);
+	/* Pause-unpause-detach is what causes the race */
+	isc_task_pause(task);
+	isc_task_unpause(task);
+	isc_task_detach(&task);
+	/* Signal event1 to finish */
+	LOCK(&lock);
+	atomic_store(&done2, false);
+	atomic_store(&done, true);
+	SIGNAL(&cv);
+	UNLOCK(&lock);
+	/* Wait for event2 to finish */
+	LOCK(&lock);
+	while (!atomic_load(&done2)) {
+		WAIT(&cv, &lock);
+	}
+	UNLOCK(&lock);
+}
+
+/*
+ * Basic task functions:
+ */
+static void
+basic_cb(isc_task_t *task, isc_event_t *event) {
+	int i, j;
+
+	UNUSED(task);
+
+	j = 0;
+	for (i = 0; i < 1000000; i++) {
+		j += 100;
+	}
+
+	UNUSED(j);
+
+	if (verbose) {
+		print_message("# task %s\n", (char *)event->ev_arg);
+	}
+
+	isc_event_free(&event);
+}
+
+static void
+basic_shutdown(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	if (verbose) {
+		print_message("# shutdown %s\n", (char *)event->ev_arg);
+	}
+
+	isc_event_free(&event);
+}
+
+static void
+basic_tick(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	if (verbose) {
+		print_message("# %s\n", (char *)event->ev_arg);
+	}
+
+	isc_event_free(&event);
+}
+
+static char one[] = "1";
+static char two[] = "2";
+static char three[] = "3";
+static char four[] = "4";
+static char tick[] = "tick";
+static char tock[] = "tock";
+
+static void
+basic(void **state) {
+	isc_result_t result;
+	isc_task_t *task1 = NULL;
+	isc_task_t *task2 = NULL;
+	isc_task_t *task3 = NULL;
+	isc_task_t *task4 = NULL;
+	isc_event_t *event = NULL;
+	isc_timer_t *ti1 = NULL;
+	isc_timer_t *ti2 = NULL;
+	isc_time_t absolute;
+	isc_interval_t interval;
+	char *testarray[] = { one, one, one,   one,  one, one,	 one,  one,
+			      one, two, three, four, two, three, four, NULL };
+	int i;
+
+	UNUSED(state);
+
+	result = isc_task_create(taskmgr, 0, &task1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_task_create(taskmgr, 0, &task2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_task_create(taskmgr, 0, &task3);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_task_create(taskmgr, 0, &task4);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_task_onshutdown(task1, basic_shutdown, one);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_task_onshutdown(task2, basic_shutdown, two);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_task_onshutdown(task3, basic_shutdown, three);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	result = isc_task_onshutdown(task4, basic_shutdown, four);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_time_settoepoch(&absolute);
+	isc_interval_set(&interval, 1, 0);
+	result = isc_timer_create(timermgr, isc_timertype_ticker, &absolute,
+				  &interval, task1, basic_tick, tick, &ti1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	ti2 = NULL;
+	isc_time_settoepoch(&absolute);
+	isc_interval_set(&interval, 1, 0);
+	result = isc_timer_create(timermgr, isc_timertype_ticker, &absolute,
+				  &interval, task2, basic_tick, tock, &ti2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+#ifndef WIN32
+	sleep(2);
+#else  /* ifndef WIN32 */
+	Sleep(2000);
+#endif /* ifndef WIN32 */
+
+	for (i = 0; testarray[i] != NULL; i++) {
+		/*
+		 * Note:  (void *)1 is used as a sender here, since some
+		 * compilers don't like casting a function pointer to a
+		 * (void *).
+		 *
+		 * In a real use, it is more likely the sender would be a
+		 * structure (socket, timer, task, etc) but this is just a
+		 * test program.
+		 */
+		event = isc_event_allocate(test_mctx, (void *)1, 1, basic_cb,
+					   testarray[i], sizeof(*event));
+		assert_non_null(event);
+		isc_task_send(task1, &event);
+	}
+
+	(void)isc_task_purge(task3, NULL, 0, 0);
+
+	isc_task_detach(&task1);
+	isc_task_detach(&task2);
+	isc_task_detach(&task3);
+	isc_task_detach(&task4);
+
+#ifndef WIN32
+	sleep(10);
+#else  /* ifndef WIN32 */
+	Sleep(10000);
+#endif /* ifndef WIN32 */
+	isc_timer_destroy(&ti1);
+	isc_timer_destroy(&ti2);
+}
+
+/*
+ * Exclusive mode test:
+ * When one task enters exclusive mode, all other active
+ * tasks complete first.
+ */
+static int
+spin(int n) {
+	int i;
+	int r = 0;
+	for (i = 0; i < n; i++) {
+		r += i;
+		if (r > 1000000) {
+			r = 0;
+		}
+	}
+	return (r);
+}
+
+static void
+exclusive_cb(isc_task_t *task, isc_event_t *event) {
+	int taskno = *(int *)(event->ev_arg);
+
+	if (verbose) {
+		print_message("# task enter %d\n", taskno);
+	}
+
+	/* task chosen from the middle of the range */
+	if (taskno == 6) {
+		isc_result_t result;
+		int i;
+
+		result = isc_task_beginexclusive(task);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		for (i = 0; i < 10; i++) {
+			assert_int_equal(active[i], 0);
+		}
+
+		isc_task_endexclusive(task);
+		atomic_store(&done, true);
+	} else {
+		active[taskno]++;
+		(void)spin(10000000);
+		active[taskno]--;
+	}
+
+	if (verbose) {
+		print_message("# task exit %d\n", taskno);
+	}
+
+	if (atomic_load(&done)) {
+		isc_mem_put(event->ev_destroy_arg, event->ev_arg, sizeof(int));
+		isc_event_free(&event);
+		atomic_fetch_sub(&counter, 1);
+	} else {
+		isc_task_send(task, &event);
+	}
+}
+
+static void
+task_exclusive(void **state) {
+	isc_task_t *tasks[10];
+	isc_result_t result;
+	int i;
+
+	UNUSED(state);
+
+	atomic_init(&counter, 0);
+
+	for (i = 0; i < 10; i++) {
+		isc_event_t *event = NULL;
+		int *v;
+
+		tasks[i] = NULL;
+
+		if (i == 6) {
+			/* task chosen from the middle of the range */
+			result = isc_task_create_bound(taskmgr, 0, &tasks[i],
+						       0);
+			assert_int_equal(result, ISC_R_SUCCESS);
+
+			isc_taskmgr_setexcltask(taskmgr, tasks[6]);
+		} else {
+			result = isc_task_create(taskmgr, 0, &tasks[i]);
+			assert_int_equal(result, ISC_R_SUCCESS);
+		}
+
+		v = isc_mem_get(test_mctx, sizeof *v);
+		assert_non_null(v);
+
+		*v = i;
+
+		event = isc_event_allocate(test_mctx, NULL, 1, exclusive_cb, v,
+					   sizeof(*event));
+		assert_non_null(event);
+
+		isc_task_send(tasks[i], &event);
+		atomic_fetch_add(&counter, 1);
+	}
+
+	for (i = 0; i < 10; i++) {
+		isc_task_detach(&tasks[i]);
+	}
+
+	while (atomic_load(&counter) > 0) {
+		isc_test_nap(1000);
+	}
+}
+
+/*
+ * Max tasks test:
+ * The task system can create and execute many tasks. Tests with 10000.
+ */
+static void
+maxtask_shutdown(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	if (event->ev_arg != NULL) {
+		isc_task_destroy((isc_task_t **)&event->ev_arg);
+	} else {
+		LOCK(&lock);
+		atomic_store(&done, true);
+		SIGNAL(&cv);
+		UNLOCK(&lock);
+	}
+
+	isc_event_free(&event);
+}
+
+static void
+maxtask_cb(isc_task_t *task, isc_event_t *event) {
+	isc_result_t result;
+
+	if (event->ev_arg != NULL) {
+		isc_task_t *newtask = NULL;
+
+		event->ev_arg = (void *)(((uintptr_t)event->ev_arg) - 1);
+
+		/*
+		 * Create a new task and forward the message.
+		 */
+		result = isc_task_create(taskmgr, 0, &newtask);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		result = isc_task_onshutdown(newtask, maxtask_shutdown,
+					     (void *)task);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		isc_task_send(newtask, &event);
+	} else if (task != NULL) {
+		isc_task_destroy(&task);
+		isc_event_free(&event);
+	}
+}
+
+static void
+manytasks(void **state) {
+	isc_mem_t *mctx = NULL;
+	isc_event_t *event = NULL;
+	uintptr_t ntasks = 10000;
+
+	UNUSED(state);
+
+	if (verbose) {
+		print_message("# Testing with %lu tasks\n",
+			      (unsigned long)ntasks);
+	}
+
+	isc_mutex_init(&lock);
+	isc_condition_init(&cv);
+
+	isc_mem_debugging = ISC_MEM_DEBUGRECORD;
+	isc_mem_create(&mctx);
+
+	isc_managers_create(mctx, 4, 0, &netmgr, &taskmgr);
+
+	atomic_init(&done, false);
+
+	event = isc_event_allocate(mctx, (void *)1, 1, maxtask_cb,
+				   (void *)ntasks, sizeof(*event));
+	assert_non_null(event);
+
+	LOCK(&lock);
+	maxtask_cb(NULL, event);
+	while (!atomic_load(&done)) {
+		WAIT(&cv, &lock);
+	}
+	UNLOCK(&lock);
+
+	isc_managers_destroy(&netmgr, &taskmgr);
+
+	isc_mem_destroy(&mctx);
+	isc_condition_destroy(&cv);
+	isc_mutex_destroy(&lock);
+}
+
+/*
+ * Shutdown test:
+ * When isc_task_shutdown() is called, shutdown events are posted
+ * in LIFO order.
+ */
+
+static int nevents = 0;
+static int nsdevents = 0;
+static int senders[4];
+atomic_bool ready, all_done;
+
+static void
+sd_sde1(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	assert_int_equal(nevents, 256);
+	assert_int_equal(nsdevents, 1);
+	++nsdevents;
+
+	if (verbose) {
+		print_message("# shutdown 1\n");
+	}
+
+	isc_event_free(&event);
+
+	atomic_store(&all_done, true);
+}
+
+static void
+sd_sde2(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	assert_int_equal(nevents, 256);
+	assert_int_equal(nsdevents, 0);
+	++nsdevents;
+
+	if (verbose) {
+		print_message("# shutdown 2\n");
+	}
+
+	isc_event_free(&event);
+}
+
+static void
+sd_event1(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	LOCK(&lock);
+	while (!atomic_load(&ready)) {
+		WAIT(&cv, &lock);
+	}
+	UNLOCK(&lock);
+
+	if (verbose) {
+		print_message("# event 1\n");
+	}
+
+	isc_event_free(&event);
+}
+
+static void
+sd_event2(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	++nevents;
+
+	if (verbose) {
+		print_message("# event 2\n");
+	}
+
+	isc_event_free(&event);
+}
+
+static void
+task_shutdown(void **state) {
+	isc_result_t result;
+	isc_eventtype_t event_type;
+	isc_event_t *event = NULL;
+	isc_task_t *task = NULL;
+	int i;
+
+	UNUSED(state);
+
+	nevents = nsdevents = 0;
+	event_type = 3;
+	atomic_init(&ready, false);
+	atomic_init(&all_done, false);
+
+	LOCK(&lock);
+
+	result = isc_task_create(taskmgr, 0, &task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/*
+	 * This event causes the task to wait on cv.
+	 */
+	event = isc_event_allocate(test_mctx, &senders[1], event_type,
+				   sd_event1, NULL, sizeof(*event));
+	assert_non_null(event);
+	isc_task_send(task, &event);
+
+	/*
+	 * Now we fill up the task's event queue with some events.
+	 */
+	for (i = 0; i < 256; ++i) {
+		event = isc_event_allocate(test_mctx, &senders[1], event_type,
+					   sd_event2, NULL, sizeof(*event));
+		assert_non_null(event);
+		isc_task_send(task, &event);
+	}
+
+	/*
+	 * Now we register two shutdown events.
+	 */
+	result = isc_task_onshutdown(task, sd_sde1, NULL);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_task_onshutdown(task, sd_sde2, NULL);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_task_shutdown(task);
+	isc_task_detach(&task);
+
+	/*
+	 * Now we free the task by signaling cv.
+	 */
+	atomic_store(&ready, true);
+	SIGNAL(&cv);
+	UNLOCK(&lock);
+
+	while (!atomic_load(&all_done)) {
+		isc_test_nap(1000);
+	}
+
+	assert_int_equal(nsdevents, 2);
+}
+
+/*
+ * Post-shutdown test:
+ * After isc_task_shutdown() has been called, any call to
+ * isc_task_onshutdown() will return ISC_R_SHUTTINGDOWN.
+ */
+static void
+psd_event1(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	LOCK(&lock);
+
+	while (!atomic_load(&done)) {
+		WAIT(&cv, &lock);
+	}
+
+	UNLOCK(&lock);
+
+	isc_event_free(&event);
+}
+
+static void
+psd_sde(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	isc_event_free(&event);
+}
+
+static void
+post_shutdown(void **state) {
+	isc_result_t result;
+	isc_eventtype_t event_type;
+	isc_event_t *event;
+	isc_task_t *task;
+
+	UNUSED(state);
+
+	atomic_init(&done, false);
+	event_type = 4;
+
+	isc_condition_init(&cv);
+
+	LOCK(&lock);
+
+	task = NULL;
+	result = isc_task_create(taskmgr, 0, &task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/*
+	 * This event causes the task to wait on cv.
+	 */
+	event = isc_event_allocate(test_mctx, &senders[1], event_type,
+				   psd_event1, NULL, sizeof(*event));
+	assert_non_null(event);
+	isc_task_send(task, &event);
+
+	isc_task_shutdown(task);
+
+	result = isc_task_onshutdown(task, psd_sde, NULL);
+	assert_int_equal(result, ISC_R_SHUTTINGDOWN);
+
+	/*
+	 * Release the task.
+	 */
+	atomic_store(&done, true);
+
+	SIGNAL(&cv);
+	UNLOCK(&lock);
+
+	isc_task_detach(&task);
+}
+
+/*
+ * Helper for the purge tests below:
+ */
+
+#define SENDERCNT 3
+#define TYPECNT	  4
+#define TAGCNT	  5
+#define NEVENTS	  (SENDERCNT * TYPECNT * TAGCNT)
+
+static bool testrange;
+static void *purge_sender;
+static isc_eventtype_t purge_type_first;
+static isc_eventtype_t purge_type_last;
+static void *purge_tag;
+static int eventcnt;
+
+atomic_bool started;
+
+static void
+pg_event1(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	LOCK(&lock);
+	while (!atomic_load(&started)) {
+		WAIT(&cv, &lock);
+	}
+	UNLOCK(&lock);
+
+	isc_event_free(&event);
+}
+
+static void
+pg_event2(isc_task_t *task, isc_event_t *event) {
+	bool sender_match = false;
+	bool type_match = false;
+	bool tag_match = false;
+
+	UNUSED(task);
+
+	if ((purge_sender == NULL) || (purge_sender == event->ev_sender)) {
+		sender_match = true;
+	}
+
+	if (testrange) {
+		if ((purge_type_first <= event->ev_type) &&
+		    (event->ev_type <= purge_type_last))
+		{
+			type_match = true;
+		}
+	} else {
+		if (purge_type_first == event->ev_type) {
+			type_match = true;
+		}
+	}
+
+	if ((purge_tag == NULL) || (purge_tag == event->ev_tag)) {
+		tag_match = true;
+	}
+
+	if (sender_match && type_match && tag_match) {
+		if ((event->ev_attributes & ISC_EVENTATTR_NOPURGE) != 0) {
+			if (verbose) {
+				print_message("# event %p,%d,%p "
+					      "matched but was not "
+					      "purgeable\n",
+					      event->ev_sender,
+					      (int)event->ev_type,
+					      event->ev_tag);
+			}
+			++eventcnt;
+		} else if (verbose) {
+			print_message("# event %p,%d,%p not purged\n",
+				      event->ev_sender, (int)event->ev_type,
+				      event->ev_tag);
+		}
+	} else {
+		++eventcnt;
+	}
+
+	isc_event_free(&event);
+}
+
+static void
+pg_sde(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	LOCK(&lock);
+	atomic_store(&done, true);
+	SIGNAL(&cv);
+	UNLOCK(&lock);
+
+	isc_event_free(&event);
+}
+
+static void
+test_purge(int sender, int type, int tag, int exp_purged) {
+	isc_result_t result;
+	isc_task_t *task = NULL;
+	isc_event_t *eventtab[NEVENTS];
+	isc_event_t *event = NULL;
+	isc_interval_t interval;
+	isc_time_t now;
+	int sender_cnt, type_cnt, tag_cnt, event_cnt, i;
+	int purged = 0;
+
+	atomic_init(&started, false);
+	atomic_init(&done, false);
+	eventcnt = 0;
+
+	isc_condition_init(&cv);
+
+	result = isc_task_create(taskmgr, 0, &task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_task_onshutdown(task, pg_sde, NULL);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/*
+	 * Block the task on cv.
+	 */
+	event = isc_event_allocate(test_mctx, (void *)1, 9999, pg_event1, NULL,
+				   sizeof(*event));
+
+	assert_non_null(event);
+	isc_task_send(task, &event);
+
+	/*
+	 * Fill the task's queue with some messages with varying
+	 * sender, type, tag, and purgeable attribute values.
+	 */
+	event_cnt = 0;
+	for (sender_cnt = 0; sender_cnt < SENDERCNT; ++sender_cnt) {
+		for (type_cnt = 0; type_cnt < TYPECNT; ++type_cnt) {
+			for (tag_cnt = 0; tag_cnt < TAGCNT; ++tag_cnt) {
+				eventtab[event_cnt] = isc_event_allocate(
+					test_mctx,
+					&senders[sender + sender_cnt],
+					(isc_eventtype_t)(type + type_cnt),
+					pg_event2, NULL, sizeof(*event));
+
+				assert_non_null(eventtab[event_cnt]);
+
+				eventtab[event_cnt]->ev_tag =
+					(void *)((uintptr_t)tag + tag_cnt);
+
+				/*
+				 * Mark events as non-purgeable if
+				 * sender, type and tag are all
+				 * odd-numbered. (There should be 4
+				 * of these out of 60 events total.)
+				 */
+				if (((sender_cnt % 2) != 0) &&
+				    ((type_cnt % 2) != 0) &&
+				    ((tag_cnt % 2) != 0))
+				{
+					eventtab[event_cnt]->ev_attributes |=
+						ISC_EVENTATTR_NOPURGE;
+				}
+				++event_cnt;
+			}
+		}
+	}
+
+	for (i = 0; i < event_cnt; ++i) {
+		isc_task_send(task, &eventtab[i]);
+	}
+
+	if (testrange) {
+		/*
+		 * We're testing isc_task_purgerange.
+		 */
+		purged = isc_task_purgerange(
+			task, purge_sender, (isc_eventtype_t)purge_type_first,
+			(isc_eventtype_t)purge_type_last, purge_tag);
+		assert_int_equal(purged, exp_purged);
+	} else {
+		/*
+		 * We're testing isc_task_purge.
+		 */
+		if (verbose) {
+			print_message("# purge events %p,%u,%p\n", purge_sender,
+				      purge_type_first, purge_tag);
+		}
+		purged = isc_task_purge(task, purge_sender,
+					(isc_eventtype_t)purge_type_first,
+					purge_tag);
+		if (verbose) {
+			print_message("# purged %d expected %d\n", purged,
+				      exp_purged);
+		}
+
+		assert_int_equal(purged, exp_purged);
+	}
+
+	/*
+	 * Unblock the task, allowing event processing.
+	 */
+	LOCK(&lock);
+	atomic_store(&started, true);
+	SIGNAL(&cv);
+
+	isc_task_shutdown(task);
+
+	isc_interval_set(&interval, 5, 0);
+
+	/*
+	 * Wait for shutdown processing to complete.
+	 */
+	while (!atomic_load(&done)) {
+		result = isc_time_nowplusinterval(&now, &interval);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		WAITUNTIL(&cv, &lock, &now);
+	}
+
+	UNLOCK(&lock);
+
+	isc_task_detach(&task);
+
+	assert_int_equal(eventcnt, event_cnt - exp_purged);
+}
+
+/*
+ * Purge test:
+ * A call to isc_task_purge(task, sender, type, tag) purges all events of
+ * type 'type' and with tag 'tag' not marked as unpurgeable from sender
+ * from the task's " queue and returns the number of events purged.
+ */
+static void
+purge(void **state) {
+	UNUSED(state);
+
+	/* Try purging on a specific sender. */
+	if (verbose) {
+		print_message("# testing purge on 2,4,8 expecting 1\n");
+	}
+	purge_sender = &senders[2];
+	purge_type_first = 4;
+	purge_type_last = 4;
+	purge_tag = (void *)8;
+	testrange = false;
+	test_purge(1, 4, 7, 1);
+
+	/* Try purging on all senders. */
+	if (verbose) {
+		print_message("# testing purge on 0,4,8 expecting 3\n");
+	}
+	purge_sender = NULL;
+	purge_type_first = 4;
+	purge_type_last = 4;
+	purge_tag = (void *)8;
+	testrange = false;
+	test_purge(1, 4, 7, 3);
+
+	/* Try purging on all senders, specified type, all tags. */
+	if (verbose) {
+		print_message("# testing purge on 0,4,0 expecting 15\n");
+	}
+	purge_sender = NULL;
+	purge_type_first = 4;
+	purge_type_last = 4;
+	purge_tag = NULL;
+	testrange = false;
+	test_purge(1, 4, 7, 15);
+
+	/* Try purging on a specified tag, no such type. */
+	if (verbose) {
+		print_message("# testing purge on 0,99,8 expecting 0\n");
+	}
+	purge_sender = NULL;
+	purge_type_first = 99;
+	purge_type_last = 99;
+	purge_tag = (void *)8;
+	testrange = false;
+	test_purge(1, 4, 7, 0);
+
+	/* Try purging on specified sender, type, all tags. */
+	if (verbose) {
+		print_message("# testing purge on 3,5,0 expecting 5\n");
+	}
+	purge_sender = &senders[3];
+	purge_type_first = 5;
+	purge_type_last = 5;
+	purge_tag = NULL;
+	testrange = false;
+	test_purge(1, 4, 7, 5);
+}
+
+/*
+ * Purge range test:
+ * A call to isc_event_purgerange(task, sender, first, last, tag) purges
+ * all events not marked unpurgeable from sender 'sender' and of type within
+ * the range 'first' to 'last' inclusive from the task's event queue and
+ * returns the number of tasks purged.
+ */
+
+static void
+purgerange(void **state) {
+	UNUSED(state);
+
+	/* Now let's try some ranges. */
+	/* testing purgerange on 2,4-5,8 expecting 1 */
+	purge_sender = &senders[2];
+	purge_type_first = 4;
+	purge_type_last = 5;
+	purge_tag = (void *)8;
+	testrange = true;
+	test_purge(1, 4, 7, 1);
+
+	/* Try purging on all senders. */
+	if (verbose) {
+		print_message("# testing purge on 0,4-5,8 expecting 5\n");
+	}
+	purge_sender = NULL;
+	purge_type_first = 4;
+	purge_type_last = 5;
+	purge_tag = (void *)8;
+	testrange = true;
+	test_purge(1, 4, 7, 5);
+
+	/* Try purging on all senders, specified type, all tags. */
+	if (verbose) {
+		print_message("# testing purge on 0,5-6,0 expecting 28\n");
+	}
+	purge_sender = NULL;
+	purge_type_first = 5;
+	purge_type_last = 6;
+	purge_tag = NULL;
+	testrange = true;
+	test_purge(1, 4, 7, 28);
+
+	/* Try purging on a specified tag, no such type. */
+	if (verbose) {
+		print_message("# testing purge on 0,99-101,8 expecting 0\n");
+	}
+	purge_sender = NULL;
+	purge_type_first = 99;
+	purge_type_last = 101;
+	purge_tag = (void *)8;
+	testrange = true;
+	test_purge(1, 4, 7, 0);
+
+	/* Try purging on specified sender, type, all tags. */
+	if (verbose) {
+		print_message("# testing purge on 3,5-6,0 expecting 10\n");
+	}
+	purge_sender = &senders[3];
+	purge_type_first = 5;
+	purge_type_last = 6;
+	purge_tag = NULL;
+	testrange = true;
+	test_purge(1, 4, 7, 10);
+}
+
+/*
+ * Helpers for purge event tests
+ */
+static void
+pge_event1(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	LOCK(&lock);
+	while (!atomic_load(&started)) {
+		WAIT(&cv, &lock);
+	}
+	UNLOCK(&lock);
+
+	isc_event_free(&event);
+}
+
+static void
+pge_event2(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	++eventcnt;
+	isc_event_free(&event);
+}
+
+static void
+pge_sde(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+
+	LOCK(&lock);
+	atomic_store(&done, true);
+	SIGNAL(&cv);
+	UNLOCK(&lock);
+
+	isc_event_free(&event);
+}
+
+static void
+try_purgeevent(bool purgeable) {
+	isc_result_t result;
+	isc_task_t *task = NULL;
+	bool purged;
+	isc_event_t *event1 = NULL;
+	isc_event_t *event2 = NULL;
+	isc_event_t *event2_clone = NULL;
+	isc_time_t now;
+	isc_interval_t interval;
+
+	atomic_init(&started, false);
+	atomic_init(&done, false);
+	eventcnt = 0;
+
+	isc_condition_init(&cv);
+
+	result = isc_task_create(taskmgr, 0, &task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_task_onshutdown(task, pge_sde, NULL);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/*
+	 * Block the task on cv.
+	 */
+	event1 = isc_event_allocate(test_mctx, (void *)1, (isc_eventtype_t)1,
+				    pge_event1, NULL, sizeof(*event1));
+	assert_non_null(event1);
+	isc_task_send(task, &event1);
+
+	event2 = isc_event_allocate(test_mctx, (void *)1, (isc_eventtype_t)1,
+				    pge_event2, NULL, sizeof(*event2));
+	assert_non_null(event2);
+
+	event2_clone = event2;
+
+	if (purgeable) {
+		event2->ev_attributes &= ~ISC_EVENTATTR_NOPURGE;
+	} else {
+		event2->ev_attributes |= ISC_EVENTATTR_NOPURGE;
+	}
+
+	isc_task_send(task, &event2);
+
+	purged = isc_task_purgeevent(task, event2_clone);
+	assert_int_equal(purgeable, purged);
+
+	/*
+	 * Unblock the task, allowing event processing.
+	 */
+	LOCK(&lock);
+	atomic_store(&started, true);
+	SIGNAL(&cv);
+
+	isc_task_shutdown(task);
+
+	isc_interval_set(&interval, 5, 0);
+
+	/*
+	 * Wait for shutdown processing to complete.
+	 */
+	while (!atomic_load(&done)) {
+		result = isc_time_nowplusinterval(&now, &interval);
+		assert_int_equal(result, ISC_R_SUCCESS);
+
+		WAITUNTIL(&cv, &lock, &now);
+	}
+
+	UNLOCK(&lock);
+
+	isc_task_detach(&task);
+
+	assert_int_equal(eventcnt, (purgeable ? 0 : 1));
+}
+
+/*
+ * Purge event test:
+ * When the event is marked as purgeable, a call to
+ * isc_task_purgeevent(task, event) purges the event 'event' from the
+ * task's queue and returns true.
+ */
+
+static void
+purgeevent(void **state) {
+	UNUSED(state);
+
+	try_purgeevent(true);
+}
+
+int
+main(int argc, char **argv) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(manytasks),
+		cmocka_unit_test_setup_teardown(all_events, _setup, _teardown),
+		cmocka_unit_test_setup_teardown(basic, _setup2, _teardown),
+		cmocka_unit_test_setup_teardown(create_task, _setup, _teardown),
+		cmocka_unit_test_setup_teardown(pause_unpause, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(post_shutdown, _setup2,
+						_teardown),
+		cmocka_unit_test_setup_teardown(privilege_drop, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(privileged_events, _setup,
+						_teardown),
+		cmocka_unit_test_setup_teardown(purge, _setup2, _teardown),
+		cmocka_unit_test_setup_teardown(purgeevent, _setup2, _teardown),
+		cmocka_unit_test_setup_teardown(purgerange, _setup, _teardown),
+		cmocka_unit_test_setup_teardown(task_shutdown, _setup4,
+						_teardown),
+		cmocka_unit_test_setup_teardown(task_exclusive, _setup4,
+						_teardown),
+	};
+	struct CMUnitTest selected[sizeof(tests) / sizeof(tests[0])];
+	size_t i;
+	int c;
+
+	memset(selected, 0, sizeof(selected));
+
+	while ((c = isc_commandline_parse(argc, argv, "lt:v")) != -1) {
+		switch (c) {
+		case 'l':
+			for (i = 0; i < (sizeof(tests) / sizeof(tests[0])); i++)
+			{
+				if (tests[i].name != NULL) {
+					fprintf(stdout, "%s\n", tests[i].name);
+				}
+			}
+			return (0);
+		case 't':
+			if (!cmocka_add_test_byname(
+				    tests, isc_commandline_argument, selected))
+			{
+				fprintf(stderr, "unknown test '%s'\n",
+					isc_commandline_argument);
+				exit(1);
+			}
+			break;
+		case 'v':
+			verbose = true;
+			break;
+		default:
+			break;
+		}
+	}
+
+	if (selected[0].name != NULL) {
+		return (cmocka_run_group_tests(selected, NULL, NULL));
+	} else {
+		return (cmocka_run_group_tests(tests, NULL, NULL));
+	}
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/taskpool_test.c b/lib/isc/tests/taskpool_test.c
new file mode 100644
index 0000000..64a4641
--- /dev/null
+++ b/lib/isc/tests/taskpool_test.c
@@ -0,0 +1,204 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/task.h>
+#include <isc/taskpool.h>
+#include <isc/util.h>
+
+#include "isctest.h"
+
+#define TASK_MAGIC    ISC_MAGIC('T', 'A', 'S', 'K')
+#define VALID_TASK(t) ISC_MAGIC_VALID(t, TASK_MAGIC)
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	result = isc_test_begin(NULL, true, 0);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+/* Create a taskpool */
+static void
+create_pool(void **state) {
+	isc_result_t result;
+	isc_taskpool_t *pool = NULL;
+
+	UNUSED(state);
+
+	result = isc_taskpool_create(taskmgr, test_mctx, 8, 2, false, &pool);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_taskpool_size(pool), 8);
+
+	isc_taskpool_destroy(&pool);
+	assert_null(pool);
+}
+
+/* Resize a taskpool */
+static void
+expand_pool(void **state) {
+	isc_result_t result;
+	isc_taskpool_t *pool1 = NULL, *pool2 = NULL, *hold = NULL;
+
+	UNUSED(state);
+
+	result = isc_taskpool_create(taskmgr, test_mctx, 10, 2, false, &pool1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_taskpool_size(pool1), 10);
+
+	/* resizing to a smaller size should have no effect */
+	hold = pool1;
+	result = isc_taskpool_expand(&pool1, 5, false, &pool2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_taskpool_size(pool2), 10);
+	assert_ptr_equal(pool2, hold);
+	assert_null(pool1);
+	pool1 = pool2;
+	pool2 = NULL;
+
+	/* resizing to the same size should have no effect */
+	hold = pool1;
+	result = isc_taskpool_expand(&pool1, 10, false, &pool2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_taskpool_size(pool2), 10);
+	assert_ptr_equal(pool2, hold);
+	assert_null(pool1);
+	pool1 = pool2;
+	pool2 = NULL;
+
+	/* resizing to larger size should make a new pool */
+	hold = pool1;
+	result = isc_taskpool_expand(&pool1, 20, false, &pool2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_taskpool_size(pool2), 20);
+	assert_ptr_not_equal(pool2, hold);
+	assert_null(pool1);
+
+	isc_taskpool_destroy(&pool2);
+	assert_null(pool2);
+}
+
+/* Get tasks */
+static void
+get_tasks(void **state) {
+	isc_result_t result;
+	isc_taskpool_t *pool = NULL;
+	isc_task_t *task1 = NULL, *task2 = NULL, *task3 = NULL;
+
+	UNUSED(state);
+
+	result = isc_taskpool_create(taskmgr, test_mctx, 2, 2, false, &pool);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_taskpool_size(pool), 2);
+
+	/* two tasks in pool; make sure we can access them more than twice */
+	isc_taskpool_gettask(pool, &task1);
+	assert_true(VALID_TASK(task1));
+
+	isc_taskpool_gettask(pool, &task2);
+	assert_true(VALID_TASK(task2));
+
+	isc_taskpool_gettask(pool, &task3);
+	assert_true(VALID_TASK(task3));
+
+	isc_task_destroy(&task1);
+	isc_task_destroy(&task2);
+	isc_task_destroy(&task3);
+
+	isc_taskpool_destroy(&pool);
+	assert_null(pool);
+}
+
+/* Set privileges */
+static void
+set_privilege(void **state) {
+	isc_result_t result;
+	isc_taskpool_t *pool = NULL;
+	isc_task_t *task1 = NULL, *task2 = NULL, *task3 = NULL;
+
+	UNUSED(state);
+
+	result = isc_taskpool_create(taskmgr, test_mctx, 2, 2, true, &pool);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_taskpool_size(pool), 2);
+
+	isc_taskpool_gettask(pool, &task1);
+	isc_taskpool_gettask(pool, &task2);
+	isc_taskpool_gettask(pool, &task3);
+
+	assert_true(VALID_TASK(task1));
+	assert_true(VALID_TASK(task2));
+	assert_true(VALID_TASK(task3));
+
+	assert_true(isc_task_getprivilege(task1));
+	assert_true(isc_task_getprivilege(task2));
+	assert_true(isc_task_getprivilege(task3));
+
+	isc_task_destroy(&task1);
+	isc_task_destroy(&task2);
+	isc_task_destroy(&task3);
+
+	isc_taskpool_destroy(&pool);
+	assert_null(pool);
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test_setup_teardown(create_pool, _setup, _teardown),
+		cmocka_unit_test_setup_teardown(expand_pool, _setup, _teardown),
+		cmocka_unit_test_setup_teardown(get_tasks, _setup, _teardown),
+		cmocka_unit_test_setup_teardown(set_privilege, _setup,
+						_teardown),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/testdata/file/keep b/lib/isc/tests/testdata/file/keep
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/lib/isc/tests/testdata/file/keep
diff --git a/lib/isc/tests/time_test.c b/lib/isc/tests/time_test.c
new file mode 100644
index 0000000..870d9bf
--- /dev/null
+++ b/lib/isc/tests/time_test.c
@@ -0,0 +1,430 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/result.h>
+#include <isc/time.h>
+#include <isc/util.h>
+
+#include "../time.c"
+
+#define NS_PER_S 1000000000 /*%< Nanoseconds per second. */
+#define MAX_NS	 (NS_PER_S - 1)
+
+struct time_vectors {
+	isc_time_t a;
+	isc_interval_t b;
+	isc_time_t r;
+	isc_result_t result;
+};
+
+const struct time_vectors vectors_add[8] = {
+	{ { 0, 0 }, { 0, 0 }, { 0, 0 }, ISC_R_SUCCESS },
+	{ { 0, MAX_NS }, { 0, MAX_NS }, { 1, MAX_NS - 1 }, ISC_R_SUCCESS },
+	{ { 0, NS_PER_S / 2 }, { 0, NS_PER_S / 2 }, { 1, 0 }, ISC_R_SUCCESS },
+	{ { UINT_MAX, MAX_NS }, { 0, 0 }, { UINT_MAX, MAX_NS }, ISC_R_SUCCESS },
+	{ { UINT_MAX, 0 }, { 0, MAX_NS }, { UINT_MAX, MAX_NS }, ISC_R_SUCCESS },
+	{ { UINT_MAX, 0 }, { 1, 0 }, { 0, 0 }, ISC_R_RANGE },
+	{ { UINT_MAX, MAX_NS }, { 0, 1 }, { 0, 0 }, ISC_R_RANGE },
+	{ { UINT_MAX / 2 + 1, NS_PER_S / 2 },
+	  { UINT_MAX / 2, NS_PER_S / 2 },
+	  { 0, 0 },
+	  ISC_R_RANGE },
+};
+
+const struct time_vectors vectors_sub[7] = {
+	{ { 0, 0 }, { 0, 0 }, { 0, 0 }, ISC_R_SUCCESS },
+	{ { 1, 0 }, { 0, MAX_NS }, { 0, 1 }, ISC_R_SUCCESS },
+	{ { 1, NS_PER_S / 2 },
+	  { 0, MAX_NS },
+	  { 0, NS_PER_S / 2 + 1 },
+	  ISC_R_SUCCESS },
+	{ { UINT_MAX, MAX_NS }, { UINT_MAX, 0 }, { 0, MAX_NS }, ISC_R_SUCCESS },
+	{ { 0, 0 }, { 1, 0 }, { 0, 0 }, ISC_R_RANGE },
+	{ { 0, 0 }, { 0, MAX_NS }, { 0, 0 }, ISC_R_RANGE },
+};
+
+static void
+isc_time_add_test(void **state) {
+	UNUSED(state);
+
+	for (size_t i = 0; i < ARRAY_SIZE(vectors_add); i++) {
+		isc_time_t r = { UINT_MAX, UINT_MAX };
+		isc_result_t result = isc_time_add(&(vectors_add[i].a),
+						   &(vectors_add[i].b), &r);
+		assert_int_equal(result, vectors_add[i].result);
+		if (result != ISC_R_SUCCESS) {
+			continue;
+		}
+
+		assert_int_equal(r.seconds, vectors_add[i].r.seconds);
+		assert_int_equal(r.nanoseconds, vectors_add[i].r.nanoseconds);
+	}
+
+	expect_assert_failure((void)isc_time_add(&(isc_time_t){ 0, MAX_NS + 1 },
+						 &(isc_interval_t){ 0, 0 },
+						 &(isc_time_t){ 0, 0 }));
+	expect_assert_failure((void)isc_time_add(
+		&(isc_time_t){ 0, 0 }, &(isc_interval_t){ 0, MAX_NS + 1 },
+		&(isc_time_t){ 0, 0 }));
+
+	expect_assert_failure((void)isc_time_add((isc_time_t *)NULL,
+						 &(isc_interval_t){ 0, 0 },
+						 &(isc_time_t){ 0, 0 }));
+	expect_assert_failure((void)isc_time_add(&(isc_time_t){ 0, 0 },
+						 (isc_interval_t *)NULL,
+						 &(isc_time_t){ 0, 0 }));
+	expect_assert_failure((void)isc_time_add(
+		&(isc_time_t){ 0, 0 }, &(isc_interval_t){ 0, 0 }, NULL));
+}
+
+static void
+isc_time_sub_test(void **state) {
+	UNUSED(state);
+
+	for (size_t i = 0; i < ARRAY_SIZE(vectors_sub); i++) {
+		isc_time_t r = { UINT_MAX, UINT_MAX };
+		isc_result_t result = isc_time_subtract(
+			&(vectors_sub[i].a), &(vectors_sub[i].b), &r);
+		assert_int_equal(result, vectors_sub[i].result);
+		if (result != ISC_R_SUCCESS) {
+			continue;
+		}
+		assert_int_equal(r.seconds, vectors_sub[i].r.seconds);
+		assert_int_equal(r.nanoseconds, vectors_sub[i].r.nanoseconds);
+	}
+
+	expect_assert_failure((void)isc_time_subtract(
+		&(isc_time_t){ 0, MAX_NS + 1 }, &(isc_interval_t){ 0, 0 },
+		&(isc_time_t){ 0, 0 }));
+	expect_assert_failure((void)isc_time_subtract(
+		&(isc_time_t){ 0, 0 }, &(isc_interval_t){ 0, MAX_NS + 1 },
+		&(isc_time_t){ 0, 0 }));
+
+	expect_assert_failure((void)isc_time_subtract((isc_time_t *)NULL,
+						      &(isc_interval_t){ 0, 0 },
+						      &(isc_time_t){ 0, 0 }));
+	expect_assert_failure((void)isc_time_subtract(&(isc_time_t){ 0, 0 },
+						      (isc_interval_t *)NULL,
+						      &(isc_time_t){ 0, 0 }));
+	expect_assert_failure((void)isc_time_subtract(
+		&(isc_time_t){ 0, 0 }, &(isc_interval_t){ 0, 0 }, NULL));
+}
+
+/* parse http time stamp */
+static void
+isc_time_parsehttptimestamp_test(void **state) {
+	isc_result_t result;
+	isc_time_t t, x;
+	char buf[ISC_FORMATHTTPTIMESTAMP_SIZE];
+
+	UNUSED(state);
+
+	setenv("TZ", "America/Los_Angeles", 1);
+	result = isc_time_now(&t);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_time_formathttptimestamp(&t, buf, sizeof(buf));
+	result = isc_time_parsehttptimestamp(buf, &x);
+	assert_int_equal(result, ISC_R_SUCCESS);
+	assert_int_equal(isc_time_seconds(&t), isc_time_seconds(&x));
+}
+
+/* print UTC in ISO8601 */
+static void
+isc_time_formatISO8601_test(void **state) {
+	isc_result_t result;
+	isc_time_t t;
+	char buf[64];
+
+	UNUSED(state);
+
+	setenv("TZ", "America/Los_Angeles", 1);
+	result = isc_time_now(&t);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/* check formatting: yyyy-mm-ddThh:mm:ssZ */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_formatISO8601(&t, buf, sizeof(buf));
+	assert_int_equal(strlen(buf), 20);
+	assert_int_equal(buf[4], '-');
+	assert_int_equal(buf[7], '-');
+	assert_int_equal(buf[10], 'T');
+	assert_int_equal(buf[13], ':');
+	assert_int_equal(buf[16], ':');
+	assert_int_equal(buf[19], 'Z');
+
+	/* check time conversion correctness */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_settoepoch(&t);
+	isc_time_formatISO8601(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "1970-01-01T00:00:00Z");
+
+	memset(buf, 'X', sizeof(buf));
+	isc_time_set(&t, 1450000000, 123000000);
+	isc_time_formatISO8601(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "2015-12-13T09:46:40Z");
+}
+
+/* print UTC in ISO8601 with milliseconds */
+static void
+isc_time_formatISO8601ms_test(void **state) {
+	isc_result_t result;
+	isc_time_t t;
+	char buf[64];
+
+	UNUSED(state);
+
+	setenv("TZ", "America/Los_Angeles", 1);
+	result = isc_time_now(&t);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/* check formatting: yyyy-mm-ddThh:mm:ss.sssZ */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_formatISO8601ms(&t, buf, sizeof(buf));
+	assert_int_equal(strlen(buf), 24);
+	assert_int_equal(buf[4], '-');
+	assert_int_equal(buf[7], '-');
+	assert_int_equal(buf[10], 'T');
+	assert_int_equal(buf[13], ':');
+	assert_int_equal(buf[16], ':');
+	assert_int_equal(buf[19], '.');
+	assert_int_equal(buf[23], 'Z');
+
+	/* check time conversion correctness */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_settoepoch(&t);
+	isc_time_formatISO8601ms(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "1970-01-01T00:00:00.000Z");
+
+	memset(buf, 'X', sizeof(buf));
+	isc_time_set(&t, 1450000000, 123000000);
+	isc_time_formatISO8601ms(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "2015-12-13T09:46:40.123Z");
+}
+
+/* print UTC in ISO8601 with microseconds */
+static void
+isc_time_formatISO8601us_test(void **state) {
+	isc_result_t result;
+	isc_time_t t;
+	char buf[64];
+
+	UNUSED(state);
+
+	setenv("TZ", "America/Los_Angeles", 1);
+	result = isc_time_now_hires(&t);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/* check formatting: yyyy-mm-ddThh:mm:ss.ssssssZ */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_formatISO8601us(&t, buf, sizeof(buf));
+	assert_int_equal(strlen(buf), 27);
+	assert_int_equal(buf[4], '-');
+	assert_int_equal(buf[7], '-');
+	assert_int_equal(buf[10], 'T');
+	assert_int_equal(buf[13], ':');
+	assert_int_equal(buf[16], ':');
+	assert_int_equal(buf[19], '.');
+	assert_int_equal(buf[26], 'Z');
+
+	/* check time conversion correctness */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_settoepoch(&t);
+	isc_time_formatISO8601us(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "1970-01-01T00:00:00.000000Z");
+
+	memset(buf, 'X', sizeof(buf));
+	isc_time_set(&t, 1450000000, 123456000);
+	isc_time_formatISO8601us(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "2015-12-13T09:46:40.123456Z");
+}
+
+/* print local time in ISO8601 */
+static void
+isc_time_formatISO8601L_test(void **state) {
+	isc_result_t result;
+	isc_time_t t;
+	char buf[64];
+
+	UNUSED(state);
+
+	setenv("TZ", "America/Los_Angeles", 1);
+	result = isc_time_now(&t);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/* check formatting: yyyy-mm-ddThh:mm:ss */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_formatISO8601L(&t, buf, sizeof(buf));
+	assert_int_equal(strlen(buf), 19);
+	assert_int_equal(buf[4], '-');
+	assert_int_equal(buf[7], '-');
+	assert_int_equal(buf[10], 'T');
+	assert_int_equal(buf[13], ':');
+	assert_int_equal(buf[16], ':');
+
+	/* check time conversion correctness */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_settoepoch(&t);
+	isc_time_formatISO8601L(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "1969-12-31T16:00:00");
+
+	memset(buf, 'X', sizeof(buf));
+	isc_time_set(&t, 1450000000, 123000000);
+	isc_time_formatISO8601L(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "2015-12-13T01:46:40");
+}
+
+/* print local time in ISO8601 with milliseconds */
+static void
+isc_time_formatISO8601Lms_test(void **state) {
+	isc_result_t result;
+	isc_time_t t;
+	char buf[64];
+
+	UNUSED(state);
+
+	setenv("TZ", "America/Los_Angeles", 1);
+	result = isc_time_now(&t);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/* check formatting: yyyy-mm-ddThh:mm:ss.sss */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_formatISO8601Lms(&t, buf, sizeof(buf));
+	assert_int_equal(strlen(buf), 23);
+	assert_int_equal(buf[4], '-');
+	assert_int_equal(buf[7], '-');
+	assert_int_equal(buf[10], 'T');
+	assert_int_equal(buf[13], ':');
+	assert_int_equal(buf[16], ':');
+	assert_int_equal(buf[19], '.');
+
+	/* check time conversion correctness */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_settoepoch(&t);
+	isc_time_formatISO8601Lms(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "1969-12-31T16:00:00.000");
+
+	memset(buf, 'X', sizeof(buf));
+	isc_time_set(&t, 1450000000, 123000000);
+	isc_time_formatISO8601Lms(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "2015-12-13T01:46:40.123");
+}
+
+/* print local time in ISO8601 with microseconds */
+static void
+isc_time_formatISO8601Lus_test(void **state) {
+	isc_result_t result;
+	isc_time_t t;
+	char buf[64];
+
+	UNUSED(state);
+
+	setenv("TZ", "America/Los_Angeles", 1);
+	result = isc_time_now_hires(&t);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/* check formatting: yyyy-mm-ddThh:mm:ss.ssssss */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_formatISO8601Lus(&t, buf, sizeof(buf));
+	assert_int_equal(strlen(buf), 26);
+	assert_int_equal(buf[4], '-');
+	assert_int_equal(buf[7], '-');
+	assert_int_equal(buf[10], 'T');
+	assert_int_equal(buf[13], ':');
+	assert_int_equal(buf[16], ':');
+	assert_int_equal(buf[19], '.');
+
+	/* check time conversion correctness */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_settoepoch(&t);
+	isc_time_formatISO8601Lus(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "1969-12-31T16:00:00.000000");
+
+	memset(buf, 'X', sizeof(buf));
+	isc_time_set(&t, 1450000000, 123456000);
+	isc_time_formatISO8601Lus(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "2015-12-13T01:46:40.123456");
+}
+
+/* print UTC time as yyyymmddhhmmsssss */
+static void
+isc_time_formatshorttimestamp_test(void **state) {
+	isc_result_t result;
+	isc_time_t t;
+	char buf[64];
+
+	UNUSED(state);
+
+	setenv("TZ", "America/Los_Angeles", 1);
+	result = isc_time_now(&t);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/* check formatting: yyyymmddhhmmsssss */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_formatshorttimestamp(&t, buf, sizeof(buf));
+	assert_int_equal(strlen(buf), 17);
+
+	/* check time conversion correctness */
+	memset(buf, 'X', sizeof(buf));
+	isc_time_settoepoch(&t);
+	isc_time_formatshorttimestamp(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "19700101000000000");
+
+	memset(buf, 'X', sizeof(buf));
+	isc_time_set(&t, 1450000000, 123000000);
+	isc_time_formatshorttimestamp(&t, buf, sizeof(buf));
+	assert_string_equal(buf, "20151213094640123");
+}
+
+int
+main(void) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(isc_time_add_test),
+		cmocka_unit_test(isc_time_sub_test),
+		cmocka_unit_test(isc_time_parsehttptimestamp_test),
+		cmocka_unit_test(isc_time_formatISO8601_test),
+		cmocka_unit_test(isc_time_formatISO8601ms_test),
+		cmocka_unit_test(isc_time_formatISO8601us_test),
+		cmocka_unit_test(isc_time_formatISO8601L_test),
+		cmocka_unit_test(isc_time_formatISO8601Lms_test),
+		cmocka_unit_test(isc_time_formatISO8601Lus_test),
+		cmocka_unit_test(isc_time_formatshorttimestamp_test),
+	};
+
+	return (cmocka_run_group_tests(tests, NULL, NULL));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/timer_test.c b/lib/isc/tests/timer_test.c
new file mode 100644
index 0000000..9bf4cf7
--- /dev/null
+++ b/lib/isc/tests/timer_test.c
@@ -0,0 +1,634 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+
+#include <inttypes.h>
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/atomic.h>
+#include <isc/commandline.h>
+#include <isc/condition.h>
+#include <isc/mem.h>
+#include <isc/platform.h>
+#include <isc/print.h>
+#include <isc/task.h>
+#include <isc/time.h>
+#include <isc/timer.h>
+#include <isc/util.h>
+
+#include "../timer.c"
+#include "isctest.h"
+
+/* Set to true (or use -v option) for verbose output */
+static bool verbose = false;
+
+#define FUDGE_SECONDS	  0	    /* in absence of clock_getres() */
+#define FUDGE_NANOSECONDS 500000000 /* in absence of clock_getres() */
+
+static isc_timer_t *timer = NULL;
+static isc_condition_t cv;
+static isc_mutex_t mx;
+static isc_time_t endtime;
+static isc_mutex_t lasttime_mx;
+static isc_time_t lasttime;
+static int seconds;
+static int nanoseconds;
+static atomic_int_fast32_t eventcnt;
+static atomic_uint_fast32_t errcnt;
+static int nevents;
+
+static int
+_setup(void **state) {
+	isc_result_t result;
+
+	UNUSED(state);
+
+	/* Timer tests require two worker threads */
+	result = isc_test_begin(NULL, true, 2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	atomic_init(&errcnt, ISC_R_SUCCESS);
+
+	return (0);
+}
+
+static int
+_teardown(void **state) {
+	UNUSED(state);
+
+	isc_test_end();
+
+	return (0);
+}
+
+static void
+test_shutdown(isc_task_t *task, isc_event_t *event) {
+	isc_result_t result;
+
+	UNUSED(task);
+
+	/*
+	 * Signal shutdown processing complete.
+	 */
+	result = isc_mutex_lock(&mx);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_condition_signal(&cv);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_mutex_unlock(&mx);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_event_free(&event);
+}
+
+static void
+setup_test(isc_timertype_t timertype, isc_time_t *expires,
+	   isc_interval_t *interval,
+	   void (*action)(isc_task_t *, isc_event_t *)) {
+	isc_result_t result;
+	isc_task_t *task = NULL;
+	isc_time_settoepoch(&endtime);
+	atomic_init(&eventcnt, 0);
+
+	isc_mutex_init(&mx);
+	isc_mutex_init(&lasttime_mx);
+
+	isc_condition_init(&cv);
+
+	atomic_store(&errcnt, ISC_R_SUCCESS);
+
+	LOCK(&mx);
+
+	result = isc_task_create(taskmgr, 0, &task);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_task_onshutdown(task, test_shutdown, NULL);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_mutex_lock(&lasttime_mx);
+	result = isc_time_now(&lasttime);
+	isc_mutex_unlock(&lasttime_mx);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_timer_create(timermgr, timertype, expires, interval, task,
+				  action, (void *)timertype, &timer);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/*
+	 * Wait for shutdown processing to complete.
+	 */
+	while (atomic_load(&eventcnt) != nevents) {
+		result = isc_condition_wait(&cv, &mx);
+		assert_int_equal(result, ISC_R_SUCCESS);
+	}
+
+	UNLOCK(&mx);
+
+	assert_int_equal(atomic_load(&errcnt), ISC_R_SUCCESS);
+
+	isc_task_detach(&task);
+	isc_mutex_destroy(&mx);
+	isc_mutex_destroy(&lasttime_mx);
+	(void)isc_condition_destroy(&cv);
+}
+
+static void
+set_global_error(isc_result_t result) {
+	(void)atomic_compare_exchange_strong(
+		&errcnt, &(uint_fast32_t){ ISC_R_SUCCESS }, result);
+}
+
+static void
+subthread_assert_true(bool expected, const char *file, unsigned int line) {
+	if (!expected) {
+		printf("# %s:%u subthread_assert_true\n", file, line);
+		set_global_error(ISC_R_UNEXPECTED);
+	}
+}
+#define subthread_assert_true(expected) \
+	subthread_assert_true(expected, __FILE__, __LINE__)
+
+static void
+subthread_assert_int_equal(int observed, int expected, const char *file,
+			   unsigned int line) {
+	if (observed != expected) {
+		printf("# %s:%u subthread_assert_int_equal(%d != %d)\n", file,
+		       line, observed, expected);
+		set_global_error(ISC_R_UNEXPECTED);
+	}
+}
+#define subthread_assert_int_equal(observed, expected) \
+	subthread_assert_int_equal(observed, expected, __FILE__, __LINE__)
+
+static void
+subthread_assert_result_equal(isc_result_t result, isc_result_t expected,
+			      const char *file, unsigned int line) {
+	if (result != expected) {
+		printf("# %s:%u subthread_assert_result_equal(%u != %u)\n",
+		       file, line, result, expected);
+		set_global_error(result);
+	}
+}
+#define subthread_assert_result_equal(observed, expected) \
+	subthread_assert_result_equal(observed, expected, __FILE__, __LINE__)
+
+static void
+ticktock(isc_task_t *task, isc_event_t *event) {
+	isc_result_t result;
+	isc_time_t now;
+	isc_time_t base;
+	isc_time_t ulim;
+	isc_time_t llim;
+	isc_interval_t interval;
+	isc_eventtype_t expected_event_type;
+
+	int tick = atomic_fetch_add(&eventcnt, 1);
+
+	if (verbose) {
+		print_message("# tick %d\n", tick);
+	}
+
+	expected_event_type = ISC_TIMEREVENT_LIFE;
+	if ((uintptr_t)event->ev_arg == isc_timertype_ticker) {
+		expected_event_type = ISC_TIMEREVENT_TICK;
+	}
+
+	if (event->ev_type != expected_event_type) {
+		print_error("# expected event type %u, got %u\n",
+			    expected_event_type, event->ev_type);
+	}
+
+	result = isc_time_now(&now);
+	subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+	isc_interval_set(&interval, seconds, nanoseconds);
+	isc_mutex_lock(&lasttime_mx);
+	result = isc_time_add(&lasttime, &interval, &base);
+	isc_mutex_unlock(&lasttime_mx);
+	subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+	isc_interval_set(&interval, FUDGE_SECONDS, FUDGE_NANOSECONDS);
+	result = isc_time_add(&base, &interval, &ulim);
+	subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+	result = isc_time_subtract(&base, &interval, &llim);
+	subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+	subthread_assert_true(isc_time_compare(&llim, &now) <= 0);
+	subthread_assert_true(isc_time_compare(&ulim, &now) >= 0);
+
+	isc_interval_set(&interval, 0, 0);
+	isc_mutex_lock(&lasttime_mx);
+	result = isc_time_add(&now, &interval, &lasttime);
+	isc_mutex_unlock(&lasttime_mx);
+	subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+	isc_event_free(&event);
+
+	if (atomic_load(&eventcnt) == nevents) {
+		result = isc_time_now(&endtime);
+		subthread_assert_result_equal(result, ISC_R_SUCCESS);
+		isc_timer_destroy(&timer);
+		isc_task_shutdown(task);
+	}
+}
+
+/*
+ * Individual unit tests
+ */
+
+/* timer type ticker */
+static void
+ticker(void **state) {
+	isc_time_t expires;
+	isc_interval_t interval;
+
+	UNUSED(state);
+
+	nevents = 12;
+	seconds = 0;
+	nanoseconds = 500000000;
+
+	isc_interval_set(&interval, seconds, nanoseconds);
+	isc_time_settoepoch(&expires);
+
+	setup_test(isc_timertype_ticker, &expires, &interval, ticktock);
+}
+
+/* timer type once reaches lifetime */
+static void
+once_life(void **state) {
+	isc_result_t result;
+	isc_time_t expires;
+	isc_interval_t interval;
+
+	UNUSED(state);
+
+	nevents = 1;
+	seconds = 1;
+	nanoseconds = 100000000;
+
+	isc_interval_set(&interval, seconds, nanoseconds);
+	result = isc_time_nowplusinterval(&expires, &interval);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_interval_set(&interval, 0, 0);
+
+	setup_test(isc_timertype_once, &expires, &interval, ticktock);
+}
+
+static void
+test_idle(isc_task_t *task, isc_event_t *event) {
+	isc_result_t result;
+	isc_time_t now;
+	isc_time_t base;
+	isc_time_t ulim;
+	isc_time_t llim;
+	isc_interval_t interval;
+
+	int tick = atomic_fetch_add(&eventcnt, 1);
+
+	if (verbose) {
+		print_message("# tick %d\n", tick);
+	}
+
+	result = isc_time_now(&now);
+	subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+	isc_interval_set(&interval, seconds, nanoseconds);
+	isc_mutex_lock(&lasttime_mx);
+	result = isc_time_add(&lasttime, &interval, &base);
+	isc_mutex_unlock(&lasttime_mx);
+	subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+	isc_interval_set(&interval, FUDGE_SECONDS, FUDGE_NANOSECONDS);
+	result = isc_time_add(&base, &interval, &ulim);
+	subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+	result = isc_time_subtract(&base, &interval, &llim);
+	subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+	subthread_assert_true(isc_time_compare(&llim, &now) <= 0);
+	subthread_assert_true(isc_time_compare(&ulim, &now) >= 0);
+
+	isc_interval_set(&interval, 0, 0);
+	isc_mutex_lock(&lasttime_mx);
+	isc_time_add(&now, &interval, &lasttime);
+	isc_mutex_unlock(&lasttime_mx);
+
+	subthread_assert_int_equal(event->ev_type, ISC_TIMEREVENT_IDLE);
+
+	isc_event_free(&event);
+
+	isc_timer_destroy(&timer);
+	isc_task_shutdown(task);
+}
+
+/* timer type once idles out */
+static void
+once_idle(void **state) {
+	isc_result_t result;
+	isc_time_t expires;
+	isc_interval_t interval;
+
+	UNUSED(state);
+
+	nevents = 1;
+	seconds = 1;
+	nanoseconds = 200000000;
+
+	isc_interval_set(&interval, seconds + 1, nanoseconds);
+	result = isc_time_nowplusinterval(&expires, &interval);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_interval_set(&interval, seconds, nanoseconds);
+
+	setup_test(isc_timertype_once, &expires, &interval, test_idle);
+}
+
+/* timer reset */
+static void
+test_reset(isc_task_t *task, isc_event_t *event) {
+	isc_result_t result;
+	isc_time_t now;
+	isc_time_t base;
+	isc_time_t ulim;
+	isc_time_t llim;
+	isc_time_t expires;
+	isc_interval_t interval;
+
+	int tick = atomic_fetch_add(&eventcnt, 1);
+
+	if (verbose) {
+		print_message("# tick %d\n", tick);
+	}
+
+	/*
+	 * Check expired time.
+	 */
+
+	result = isc_time_now(&now);
+	subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+	isc_interval_set(&interval, seconds, nanoseconds);
+	isc_mutex_lock(&lasttime_mx);
+	result = isc_time_add(&lasttime, &interval, &base);
+	isc_mutex_unlock(&lasttime_mx);
+	subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+	isc_interval_set(&interval, FUDGE_SECONDS, FUDGE_NANOSECONDS);
+	result = isc_time_add(&base, &interval, &ulim);
+	subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+	result = isc_time_subtract(&base, &interval, &llim);
+	subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+	subthread_assert_true(isc_time_compare(&llim, &now) <= 0);
+	subthread_assert_true(isc_time_compare(&ulim, &now) >= 0);
+
+	isc_interval_set(&interval, 0, 0);
+	isc_mutex_lock(&lasttime_mx);
+	isc_time_add(&now, &interval, &lasttime);
+	isc_mutex_unlock(&lasttime_mx);
+
+	int _eventcnt = atomic_load(&eventcnt);
+
+	if (_eventcnt < 3) {
+		subthread_assert_int_equal(event->ev_type, ISC_TIMEREVENT_TICK);
+
+		if (_eventcnt == 2) {
+			isc_interval_set(&interval, seconds, nanoseconds);
+			result = isc_time_nowplusinterval(&expires, &interval);
+			subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+			isc_interval_set(&interval, 0, 0);
+			result = isc_timer_reset(timer, isc_timertype_once,
+						 &expires, &interval, false);
+			subthread_assert_result_equal(result, ISC_R_SUCCESS);
+		}
+
+		isc_event_free(&event);
+	} else {
+		subthread_assert_int_equal(event->ev_type, ISC_TIMEREVENT_LIFE);
+
+		isc_event_free(&event);
+		isc_timer_destroy(&timer);
+		isc_task_shutdown(task);
+	}
+}
+
+static void
+reset(void **state) {
+	isc_time_t expires;
+	isc_interval_t interval;
+
+	UNUSED(state);
+
+	nevents = 3;
+	seconds = 0;
+	nanoseconds = 750000000;
+
+	isc_interval_set(&interval, seconds, nanoseconds);
+	isc_time_settoepoch(&expires);
+
+	setup_test(isc_timertype_ticker, &expires, &interval, test_reset);
+}
+
+static atomic_bool startflag;
+static atomic_bool shutdownflag;
+static isc_timer_t *tickertimer = NULL;
+static isc_timer_t *oncetimer = NULL;
+static isc_task_t *task1 = NULL;
+static isc_task_t *task2 = NULL;
+
+/*
+ * task1 blocks on mx while events accumulate
+ * in its queue, until signaled by task2.
+ */
+
+static void
+tick_event(isc_task_t *task, isc_event_t *event) {
+	isc_result_t result;
+	isc_time_t expires;
+	isc_interval_t interval;
+
+	UNUSED(task);
+
+	if (!atomic_load(&startflag)) {
+		if (verbose) {
+			print_message("# tick_event %d\n", -1);
+		}
+		isc_event_free(&event);
+		return;
+	}
+
+	int tick = atomic_fetch_add(&eventcnt, 1);
+	if (verbose) {
+		print_message("# tick_event %d\n", tick);
+	}
+
+	/*
+	 * On the first tick, purge all remaining tick events
+	 * and then shut down the task.
+	 */
+	if (tick == 0) {
+		isc_time_settoepoch(&expires);
+		isc_interval_set(&interval, seconds, 0);
+		result = isc_timer_reset(tickertimer, isc_timertype_ticker,
+					 &expires, &interval, true);
+		subthread_assert_result_equal(result, ISC_R_SUCCESS);
+
+		isc_task_shutdown(task);
+	}
+
+	isc_event_free(&event);
+}
+
+static void
+once_event(isc_task_t *task, isc_event_t *event) {
+	if (verbose) {
+		print_message("# once_event\n");
+	}
+
+	/*
+	 * Allow task1 to start processing events.
+	 */
+	atomic_store(&startflag, true);
+
+	isc_event_free(&event);
+	isc_task_shutdown(task);
+}
+
+static void
+shutdown_purge(isc_task_t *task, isc_event_t *event) {
+	UNUSED(task);
+	UNUSED(event);
+
+	if (verbose) {
+		print_message("# shutdown_event\n");
+	}
+
+	/*
+	 * Signal shutdown processing complete.
+	 */
+	atomic_store(&shutdownflag, 1);
+
+	isc_event_free(&event);
+}
+
+/* timer events purged */
+static void
+purge(void **state) {
+	isc_result_t result;
+	isc_time_t expires;
+	isc_interval_t interval;
+
+	UNUSED(state);
+
+	atomic_init(&startflag, 0);
+	atomic_init(&shutdownflag, 0);
+	atomic_init(&eventcnt, 0);
+	seconds = 1;
+	nanoseconds = 0;
+
+	result = isc_task_create(taskmgr, 0, &task1);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_task_onshutdown(task1, shutdown_purge, NULL);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	result = isc_task_create(taskmgr, 0, &task2);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_time_settoepoch(&expires);
+	isc_interval_set(&interval, seconds, 0);
+
+	tickertimer = NULL;
+	result = isc_timer_create(timermgr, isc_timertype_ticker, &expires,
+				  &interval, task1, tick_event, NULL,
+				  &tickertimer);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	oncetimer = NULL;
+
+	isc_interval_set(&interval, (seconds * 2) + 1, 0);
+	result = isc_time_nowplusinterval(&expires, &interval);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	isc_interval_set(&interval, 0, 0);
+	result = isc_timer_create(timermgr, isc_timertype_once, &expires,
+				  &interval, task2, once_event, NULL,
+				  &oncetimer);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
+	/*
+	 * Wait for shutdown processing to complete.
+	 */
+	while (!atomic_load(&shutdownflag)) {
+		isc_test_nap(1000);
+	}
+
+	assert_int_equal(atomic_load(&errcnt), ISC_R_SUCCESS);
+
+	assert_int_equal(atomic_load(&eventcnt), 1);
+
+	isc_timer_destroy(&tickertimer);
+	isc_timer_destroy(&oncetimer);
+	isc_task_destroy(&task1);
+	isc_task_destroy(&task2);
+}
+
+int
+main(int argc, char **argv) {
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(ticker),    cmocka_unit_test(once_life),
+		cmocka_unit_test(once_idle), cmocka_unit_test(reset),
+		cmocka_unit_test(purge),
+	};
+	int c;
+
+	while ((c = isc_commandline_parse(argc, argv, "v")) != -1) {
+		switch (c) {
+		case 'v':
+			verbose = true;
+			break;
+		default:
+			break;
+		}
+	}
+
+	return (cmocka_run_group_tests(tests, _setup, _teardown));
+}
+
+#else /* HAVE_CMOCKA */
+
+#include <stdio.h>
+
+int
+main(void) {
+	printf("1..0 # Skipped: cmocka not available\n");
+	return (SKIPPED_TEST_EXIT_CODE);
+}
+
+#endif /* if HAVE_CMOCKA */
diff --git a/lib/isc/tests/uv_wrap.h b/lib/isc/tests/uv_wrap.h
new file mode 100644
index 0000000..968a624
--- /dev/null
+++ b/lib/isc/tests/uv_wrap.h
@@ -0,0 +1,323 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#if HAVE_CMOCKA
+#include <inttypes.h>
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#include <uv.h>
+
+#include <isc/atomic.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include "../netmgr/uv-compat.h"
+
+/* uv_udp_t */
+
+int
+__wrap_uv_udp_open(uv_udp_t *handle, uv_os_sock_t sock);
+int
+__wrap_uv_udp_bind(uv_udp_t *handle, const struct sockaddr *addr,
+		   unsigned int flags);
+#if UV_VERSION_HEX >= UV_VERSION(1, 27, 0)
+int
+__wrap_uv_udp_connect(uv_udp_t *handle, const struct sockaddr *addr);
+int
+__wrap_uv_udp_getpeername(const uv_udp_t *handle, struct sockaddr *name,
+			  int *namelen);
+#endif /* UV_VERSION_HEX >= UV_VERSION(1, 27, 0) */
+int
+__wrap_uv_udp_getsockname(const uv_udp_t *handle, struct sockaddr *name,
+			  int *namelen);
+int
+__wrap_uv_udp_send(uv_udp_send_t *req, uv_udp_t *handle, const uv_buf_t bufs[],
+		   unsigned int nbufs, const struct sockaddr *addr,
+		   uv_udp_send_cb send_cb);
+int
+__wrap_uv_udp_recv_start(uv_udp_t *handle, uv_alloc_cb alloc_cb,
+			 uv_udp_recv_cb recv_cb);
+int
+__wrap_uv_udp_recv_stop(uv_udp_t *handle);
+
+/* uv_tcp_t */
+int
+__wrap_uv_tcp_open(uv_tcp_t *handle, uv_os_sock_t sock);
+int
+__wrap_uv_tcp_bind(uv_tcp_t *handle, const struct sockaddr *addr,
+		   unsigned int flags);
+int
+__wrap_uv_tcp_getsockname(const uv_tcp_t *handle, struct sockaddr *name,
+			  int *namelen);
+int
+__wrap_uv_tcp_getpeername(const uv_tcp_t *handle, struct sockaddr *name,
+			  int *namelen);
+int
+__wrap_uv_tcp_connect(uv_connect_t *req, uv_tcp_t *handle,
+		      const struct sockaddr *addr, uv_connect_cb cb);
+
+/* uv_stream_t */
+int
+__wrap_uv_listen(uv_stream_t *stream, int backlog, uv_connection_cb cb);
+int
+__wrap_uv_accept(uv_stream_t *server, uv_stream_t *client);
+
+/* uv_handle_t */
+int
+__wrap_uv_send_buffer_size(uv_handle_t *handle, int *value);
+int
+__wrap_uv_recv_buffer_size(uv_handle_t *handle, int *value);
+int
+__wrap_uv_fileno(const uv_handle_t *handle, uv_os_fd_t *fd);
+
+/* uv_timer_t */
+/* FIXME */
+/*
+ * uv_timer_init
+ * uv_timer_start
+ */
+
+static atomic_int __state_uv_udp_open = 0;
+
+int
+__wrap_uv_udp_open(uv_udp_t *handle, uv_os_sock_t sock) {
+	if (atomic_load(&__state_uv_udp_open) == 0) {
+		return (uv_udp_open(handle, sock));
+	}
+	return (atomic_load(&__state_uv_udp_open));
+}
+
+static atomic_int __state_uv_udp_bind = 0;
+
+int
+__wrap_uv_udp_bind(uv_udp_t *handle, const struct sockaddr *addr,
+		   unsigned int flags) {
+	if (atomic_load(&__state_uv_udp_bind) == 0) {
+		return (uv_udp_bind(handle, addr, flags));
+	}
+	return (atomic_load(&__state_uv_udp_bind));
+}
+
+static atomic_int __state_uv_udp_connect = 0;
+#if UV_VERSION_HEX >= UV_VERSION(1, 27, 0)
+int
+__wrap_uv_udp_connect(uv_udp_t *handle, const struct sockaddr *addr) {
+	if (atomic_load(&__state_uv_udp_connect) == 0) {
+		return (uv_udp_connect(handle, addr));
+	}
+	return (atomic_load(&__state_uv_udp_connect));
+}
+#endif /* UV_VERSION_HEX >= UV_VERSION(1, 27, 0) */
+
+static atomic_int __state_uv_udp_getpeername = 0;
+#if UV_VERSION_HEX >= UV_VERSION(1, 27, 0)
+int
+__wrap_uv_udp_getpeername(const uv_udp_t *handle, struct sockaddr *name,
+			  int *namelen) {
+	if (atomic_load(&__state_uv_udp_getpeername) == 0) {
+		return (uv_udp_getpeername(handle, name, namelen));
+	}
+	return (atomic_load(&__state_uv_udp_getpeername));
+}
+#endif /* UV_VERSION_HEX >= UV_VERSION(1, 27, 0) */
+
+static atomic_int __state_uv_udp_getsockname = 0;
+int
+__wrap_uv_udp_getsockname(const uv_udp_t *handle, struct sockaddr *name,
+			  int *namelen) {
+	if (atomic_load(&__state_uv_udp_getsockname) == 0) {
+		return (uv_udp_getsockname(handle, name, namelen));
+	}
+	return (atomic_load(&__state_uv_udp_getsockname));
+}
+
+static atomic_int __state_uv_udp_send = 0;
+int
+__wrap_uv_udp_send(uv_udp_send_t *req, uv_udp_t *handle, const uv_buf_t bufs[],
+		   unsigned int nbufs, const struct sockaddr *addr,
+		   uv_udp_send_cb send_cb) {
+	if (atomic_load(&__state_uv_udp_send) == 0) {
+		return (uv_udp_send(req, handle, bufs, nbufs, addr, send_cb));
+	}
+	return (atomic_load(&__state_uv_udp_send));
+}
+
+static atomic_int __state_uv_udp_recv_start = 0;
+int
+__wrap_uv_udp_recv_start(uv_udp_t *handle, uv_alloc_cb alloc_cb,
+			 uv_udp_recv_cb recv_cb) {
+	if (atomic_load(&__state_uv_udp_recv_start) == 0) {
+		return (uv_udp_recv_start(handle, alloc_cb, recv_cb));
+	}
+	return (atomic_load(&__state_uv_udp_recv_start));
+}
+
+static atomic_int __state_uv_udp_recv_stop = 0;
+int
+__wrap_uv_udp_recv_stop(uv_udp_t *handle) {
+	if (atomic_load(&__state_uv_udp_recv_stop) == 0) {
+		return (uv_udp_recv_stop(handle));
+	}
+	return (atomic_load(&__state_uv_udp_recv_stop));
+}
+
+static atomic_int __state_uv_tcp_open = 0;
+int
+__wrap_uv_tcp_open(uv_tcp_t *handle, uv_os_sock_t sock) {
+	if (atomic_load(&__state_uv_tcp_open) == 0) {
+		return (uv_tcp_open(handle, sock));
+	}
+	return (atomic_load(&__state_uv_tcp_open));
+}
+
+static atomic_int __state_uv_tcp_bind = 0;
+int
+__wrap_uv_tcp_bind(uv_tcp_t *handle, const struct sockaddr *addr,
+		   unsigned int flags) {
+	if (atomic_load(&__state_uv_tcp_bind) == 0) {
+		return (uv_tcp_bind(handle, addr, flags));
+	}
+	return (atomic_load(&__state_uv_tcp_bind));
+}
+
+static atomic_int __state_uv_tcp_getsockname = 0;
+int
+__wrap_uv_tcp_getsockname(const uv_tcp_t *handle, struct sockaddr *name,
+			  int *namelen) {
+	if (atomic_load(&__state_uv_tcp_getsockname) == 0) {
+		return (uv_tcp_getsockname(handle, name, namelen));
+	}
+	return (atomic_load(&__state_uv_tcp_getsockname));
+}
+
+static atomic_int __state_uv_tcp_getpeername = 0;
+int
+__wrap_uv_tcp_getpeername(const uv_tcp_t *handle, struct sockaddr *name,
+			  int *namelen) {
+	if (atomic_load(&__state_uv_tcp_getpeername) == 0) {
+		return (uv_tcp_getpeername(handle, name, namelen));
+	}
+	return (atomic_load(&__state_uv_tcp_getpeername));
+}
+
+static atomic_int __state_uv_tcp_connect = 0;
+int
+__wrap_uv_tcp_connect(uv_connect_t *req, uv_tcp_t *handle,
+		      const struct sockaddr *addr, uv_connect_cb cb) {
+	if (atomic_load(&__state_uv_tcp_connect) == 0) {
+		return (uv_tcp_connect(req, handle, addr, cb));
+	}
+	return (atomic_load(&__state_uv_tcp_connect));
+}
+
+static atomic_int __state_uv_listen = 0;
+int
+__wrap_uv_listen(uv_stream_t *stream, int backlog, uv_connection_cb cb) {
+	if (atomic_load(&__state_uv_listen) == 0) {
+		return (uv_listen(stream, backlog, cb));
+	}
+	return (atomic_load(&__state_uv_listen));
+}
+
+static atomic_int __state_uv_accept = 0;
+int
+__wrap_uv_accept(uv_stream_t *server, uv_stream_t *client) {
+	if (atomic_load(&__state_uv_accept) == 0) {
+		return (uv_accept(server, client));
+	}
+	return (atomic_load(&__state_uv_accept));
+}
+
+static atomic_int __state_uv_send_buffer_size = 0;
+int
+__wrap_uv_send_buffer_size(uv_handle_t *handle, int *value) {
+	if (atomic_load(&__state_uv_send_buffer_size) == 0) {
+		return (uv_send_buffer_size(handle, value));
+	}
+	return (atomic_load(&__state_uv_send_buffer_size));
+}
+
+static atomic_int __state_uv_recv_buffer_size = 0;
+int
+__wrap_uv_recv_buffer_size(uv_handle_t *handle, int *value) {
+	if (atomic_load(&__state_uv_recv_buffer_size) == 0) {
+		return (uv_recv_buffer_size(handle, value));
+	}
+	return (atomic_load(&__state_uv_recv_buffer_size));
+}
+
+static atomic_int __state_uv_fileno = 0;
+int
+__wrap_uv_fileno(const uv_handle_t *handle, uv_os_fd_t *fd) {
+	if (atomic_load(&__state_uv_fileno) == 0) {
+		return (uv_fileno(handle, fd));
+	}
+	return (atomic_load(&__state_uv_fileno));
+}
+
+#define uv_udp_open(...) __wrap_uv_udp_open(__VA_ARGS__)
+#define uv_udp_bind(...) __wrap_uv_udp_bind(__VA_ARGS__)
+#if UV_VERSION_HEX >= UV_VERSION(1, 27, 0)
+#define uv_udp_connect(...)	__wrap_uv_udp_connect(__VA_ARGS__)
+#define uv_udp_getpeername(...) __wrap_uv_udp_getpeername(__VA_ARGS__)
+#endif /* UV_VERSION_HEX >= UV_VERSION(1, 27, 0) */
+#define uv_udp_getsockname(...) __wrap_uv_udp_getsockname(__VA_ARGS__)
+#define uv_udp_send(...)	__wrap_uv_udp_send(__VA_ARGS__)
+#define uv_udp_recv_start(...)	__wrap_uv_udp_recv_start(__VA_ARGS__)
+#define uv_udp_recv_stop(...)	__wrap_uv_udp_recv_stop(__VA_ARGS__)
+
+#define uv_tcp_open(...)	__wrap_uv_tcp_open(__VA_ARGS__)
+#define uv_tcp_bind(...)	__wrap_uv_tcp_bind(__VA_ARGS__)
+#define uv_tcp_getsockname(...) __wrap_uv_tcp_getsockname(__VA_ARGS__)
+#define uv_tcp_getpeername(...) __wrap_uv_tcp_getpeername(__VA_ARGS__)
+#define uv_tcp_connect(...)	__wrap_uv_tcp_connect(__VA_ARGS__)
+
+#define uv_listen(...) __wrap_uv_listen(__VA_ARGS__)
+#define uv_accept(...) __wrap_uv_accept(__VA_ARGS__)
+
+#define uv_send_buffer_size(...) __wrap_uv_send_buffer_size(__VA_ARGS__)
+#define uv_recv_buffer_size(...) __wrap_uv_recv_buffer_size(__VA_ARGS__)
+#define uv_fileno(...)		 __wrap_uv_fileno(__VA_ARGS__)
+
+#define RESET_RETURN                                           \
+	{                                                      \
+		atomic_store(&__state_uv_udp_open, 0);         \
+		atomic_store(&__state_uv_udp_bind, 0);         \
+		atomic_store(&__state_uv_udp_connect, 0);      \
+		atomic_store(&__state_uv_udp_getpeername, 0);  \
+		atomic_store(&__state_uv_udp_getsockname, 0);  \
+		atomic_store(&__state_uv_udp_send, 0);         \
+		atomic_store(&__state_uv_udp_recv_start, 0);   \
+		atomic_store(&__state_uv_udp_recv_stop, 0);    \
+		atomic_store(&__state_uv_tcp_open, 0);         \
+		atomic_store(&__state_uv_tcp_bind, 0);         \
+		atomic_store(&__state_uv_tcp_getpeername, 0);  \
+		atomic_store(&__state_uv_tcp_getsockname, 0);  \
+		atomic_store(&__state_uv_tcp_connect, 0);      \
+		atomic_store(&__state_uv_listen, 0);           \
+		atomic_store(&__state_uv_accept, 0);           \
+		atomic_store(&__state_uv_send_buffer_size, 0); \
+		atomic_store(&__state_uv_recv_buffer_size, 0); \
+		atomic_store(&__state_uv_fileno, 0);           \
+	}
+
+#define WILL_RETURN(func, value) atomic_store(&__state_##func, value)
+
+#endif /* HAVE_CMOCKA */
author	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-27 07:24:22 +0000
committer	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-27 07:24:22 +0000
commit	45d6379135504814ab723b57f0eb8be23393a51d (patch)
tree	d4f2ec4acca824a8446387a758b0ce4238a4dffa /lib/isc/tests
parent	Initial commit. (diff)
download	bind9-upstream.tar.xz bind9-upstream.zip