diff --git a/tests/commonlib/bsd/gcd-test.c b/tests/commonlib/bsd/gcd-test.c
new file mode 100644
index 0000000..13fad86
--- /dev/null
+++ b/tests/commonlib/bsd/gcd-test.c
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <commonlib/bsd/gcd.h>
+#include <tests/test.h>
+
+static void test_gcd32(void **state)
+{
+	assert_int_equal(gcd32(17, 11), 1);
+	assert_int_equal(gcd32(64, 36), 4);
+	assert_int_equal(gcd32(90, 123), 3);
+	assert_int_equal(gcd32(65536, 339584), 128);
+	assert_int_equal(gcd32(1, 1), 1);
+	assert_int_equal(gcd32(1, 123), 1);
+	assert_int_equal(gcd32(123, 1), 1);
+	assert_int_equal(gcd32(1, UINT32_MAX), 1);
+	assert_int_equal(gcd32(UINT32_MAX, 1), 1);
+	assert_int_equal(gcd32(UINT32_MAX, UINT32_MAX), UINT32_MAX);
+}
+
+int main(void)
+{
+	const struct CMUnitTest tests[] = {
+		cmocka_unit_test(test_gcd32),
+	};
+
+	return cb_run_group_tests(tests, NULL, NULL);
+}