1 files changed, 96 insertions, 0 deletions
diff --git a/tests/isc/hash_test.c b/tests/isc/hash_test.c
new file mode 100644
index 0000000..10a8c27
--- /dev/null
+++ b/tests/isc/hash_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.
+ */
+
+#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>
+#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 <tests/isc.h>
+
+/* Hash function test */
+ISC_RUN_TEST_IMPL(isc_hash_function) {
+	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 */
+ISC_RUN_TEST_IMPL(isc_hash_initializer) {
+	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);
+}
+
+ISC_TEST_LIST_START
+
+ISC_TEST_ENTRY(isc_hash_function)
+ISC_TEST_ENTRY(isc_hash_initializer)
+
+ISC_TEST_LIST_END
+
+ISC_TEST_MAIN