tests: Add lib/hexstrtobin-test test case

Implement unit tests for lib/hexstrtobin module.

Signed-off-by: Anna Karas <aka@semihalf.com>
Change-Id: Id929b07936ea180a798309e5acb1dacf1b396e32
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43088
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>

tests/lib/Makefile.inc

@@ -2,9 +2,13 @@
 
 tests-y += string-test
 tests-y += b64_decode-test
+tests-y += hexstrtobin-test
 
 string-test-srcs += tests/lib/string-test.c
 string-test-srcs += src/lib/string.c
 
 b64_decode-test-srcs += tests/lib/b64_decode-test.c
 b64_decode-test-srcs += src/lib/b64_decode.c
+
+hexstrtobin-test-srcs += tests/lib/hexstrtobin-test.c
+hexstrtobin-test-srcs += src/lib/hexstrtobin.c

tests/lib/hexstrtobin-test.c

@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <stdlib.h>
+#include <string.h>
+#include <lib.h>
+#include <stdint.h>
+#include <tests/test.h>
+
+struct hexstr_t {
+	char *str;
+	int *val;
+	size_t res;
+} hexstr[] = {
+	{.str = "A", .res = 0},
+	{.str = "AB", .val = (int[]) {171}, .res = 1},
+	{.str = "277a", .val = (int[]) {39, 122}, .res = 2},
+	{.str = "277ab", .val = (int[]) {39, 122}, .res = 2},
+	{.str = "\n\rx1234567ijkl", .val = (int[]) {18, 52, 86}, .res = 3},
+	{.str = "\nB*e/ef-", .val = (int[]) {190, 239}, .res = 2},
+};
+
+static void test_hexstrtobin(void **state)
+{
+	uint8_t *buf;
+	size_t res, len;
+
+	for (int i = 0; i < ARRAY_SIZE(hexstr); i++) {
+		len = strlen(hexstr[i].str) / 2 + 1;
+		buf = malloc(len);
+		res = hexstrtobin(hexstr[i].str, buf, len);
+
+		assert_int_equal(hexstr[i].res, res);
+
+		for (int j = 0; j < res; j++)
+			assert_int_equal(hexstr[i].val[j], buf[j]);
+
+		free(buf);
+	}
+}
+
+int main(void)
+{
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(test_hexstrtobin),
+	};
+
+	return cmocka_run_group_tests(tests, NULL, NULL);
+}