![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/t/unit/utils/strings_test.c b/t/unit/utils/strings_test.c
--- /dev/null
@@ -0,0 +1,157 @@
+/*
+ * SysDB - t/unit/utils/strings_test.c
+ * Copyright (C) 2016 Sebastian 'tokkee' Harl <sh@tokkee.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "core/data.h"
+#include "utils/strings.h"
+#include "testutils.h"
+
+#include <check.h>
+
+/*
+ * tests
+ */
+
+START_TEST(test_stringv)
+{
+ char **dst = NULL;
+ size_t dst_len = 0;
+
+ char *src[] = { "a", "b", "c" };
+ size_t src_len = SDB_STATIC_ARRAY_LEN(src);
+ size_t i;
+
+ int check;
+
+ /* Test no-op, empty operations. */
+ check = stringv_copy(&dst, &dst_len, NULL, 0);
+ fail_unless(check == 0,
+ "stringv_copy(&<null>, &<0>, <null>, 0) = %d; expected: 0",
+ check);
+ fail_unless((dst == NULL) && (dst_len == 0),
+ "stringv_copy(&<null>, &<0>, <null>, 0) produced %p, %d; "
+ "expected <null>, 0", dst, dst_len);
+ stringv_free(&dst, &dst_len);
+ fail_unless((dst == NULL) && (dst_len == 0),
+ "stringv_free(&<null>, &<0>) produced %p, %d; expected <null>, 0",
+ dst, dst_len);
+
+ /* Now, append some content. */
+ for (i = 0; i < src_len; i++) {
+ sdb_data_t d1 = {
+ SDB_TYPE_STRING | SDB_TYPE_ARRAY,
+ { .array = { 0, NULL } },
+ };
+ sdb_data_t d2 = d1;
+
+ char buf1[256], buf2[256];
+ size_t j;
+
+ check = stringv_append(&dst, &dst_len, src[i]);
+ fail_unless(check == 0,
+ "stringv_append(<s>, <len>, '%s') = %d; expected: 0",
+ src[i], check);
+ fail_unless((dst != NULL) && (dst_len == i + 1),
+ "stringv_append(<s>, <len>, '%s') produced s=%p, len=%zu; "
+ "expected: s=<v>, len=%zu", src[i], dst, dst_len, i + 1);
+
+ for (j = 0; j <= i; j++)
+ if ((! dst[j]) || (strcmp(dst[j], src[j]) != 0))
+ break;
+
+ if (j <= i) {
+ d1.data.array.values = dst;
+ d1.data.array.length = dst_len;
+ sdb_data_format(&d1, buf1, sizeof(buf1), 0);
+
+ d2.data.array.values = src;
+ d2.data.array.length = dst_len;
+ sdb_data_format(&d2, buf2, sizeof(buf2), 0);
+
+ fail("stringv_append(<s>, <len>, '%s') produced unexpected result: "
+ "vectors differ at position %zu: '%s' <-> '%s'",
+ src[i], j, buf1, buf2);
+ }
+ }
+ stringv_free(&dst, &dst_len);
+
+ /* Copy all in one go. */
+ for (i = 0; i < src_len; i++) {
+ sdb_data_t d1 = {
+ SDB_TYPE_STRING | SDB_TYPE_ARRAY,
+ { .array = { 0, NULL } },
+ };
+ sdb_data_t d2 = d1;
+
+ char buf1[256], buf2[256];
+ size_t j;
+
+ /* stringv_copy is expected to free memory as needed, so simply copy
+ * over the old values from the previous iteration. */
+ check = stringv_copy(&dst, &dst_len, (const char * const *)src, i + 1);
+ fail_unless(check == 0,
+ "stringv_copy(<s>, <len>, <src>, %zu) = %d; expected: 0",
+ i, check);
+ fail_unless((dst != NULL) && (dst_len == i + 1),
+ "stringv_copy(<s>, <len>, <src>, %zu) produced s=%p, len=%zu; "
+ "expected: s=<v>, len=%zu", i, dst, dst_len, i + 1);
+
+ for (j = 0; j <= i; j++)
+ if ((! dst[j]) || (strcmp(dst[j], src[j]) != 0))
+ break;
+
+ if (j <= i) {
+ d1.data.array.values = dst;
+ d1.data.array.length = dst_len;
+ sdb_data_format(&d1, buf1, sizeof(buf1), 0);
+
+ d2.data.array.values = src;
+ d2.data.array.length = dst_len;
+ sdb_data_format(&d2, buf2, sizeof(buf2), 0);
+
+ fail("stringv_copy(<s>, <len>, <src>, %zu) produced unexpected result: "
+ "vectors differ at position %zu: '%s' <-> '%s'",
+ i, j, buf1, buf2);
+ }
+ }
+ stringv_free(&dst, &dst_len);
+}
+END_TEST
+
+TEST_MAIN("utils::strings")
+{
+ TCase *tc = tcase_create("core");
+ tcase_add_test(tc, test_stringv);
+ ADD_TCASE(tc);
+}
+TEST_MAIN_END
+
+/* vim: set tw=78 sw=4 ts=4 noexpandtab : */
+