Add a test to check the version/variant bits of v4 and v5 UUIDs.
Signed-off-by: Caleb Connolly <caleb.conno...@linaro.org>
---
test/lib/uuid.c | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/test/lib/uuid.c b/test/lib/uuid.c
index 2c6cfd42ddc3..63d36e120623 100644
--- a/test/lib/uuid.c
+++ b/test/lib/uuid.c
@@ -43,8 +43,44 @@ static int lib_test_uuid_to_le(struct unit_test_state *uts)
}
LIB_TEST(lib_test_uuid_to_le, 0);
+/* Test UUID attribute bits (version, variant) */
+static int lib_test_uuid_bits(struct unit_test_state *uts)
+{
+ unsigned char uuid[16];
+ efi_guid_t guid;
+ int i;
+
+ /*
+ * Reduce the chance of a randomly generated UUID disguising
+ * a regression by testing multiple times.
+ */
+ for (i = 0; i < 5; i++) {
+ /* Test UUID v4 */
+ gen_rand_uuid((unsigned char *)&uuid);
+
+ printf("v4 UUID: %pUb\n", (efi_guid_t *)uuid);
+
+ ut_assert((uuid[6] & 0xf0) == 0x40); /* version 4 */
+ ut_assert((uuid[8] & UUID_VARIANT_MASK) == (UUID_VARIANT <<
UUID_VARIANT_SHIFT)); /* variant 1 */
+
+ /* Test v5, use the v4 UUID as the namespace */
+ gen_v5_guid((struct uuid *)uuid,
+ &guid, "test", 4, NULL);
+
+ printf("v5 GUID: %pUl\n", (efi_guid_t *)uuid);
+
+ /* This is a GUID so bits 6 and 7 are swapped (little endian) */
+ ut_assert((guid.b[7] & 0xf0) == 0x50); /* version 5 */
+ ut_assert((guid.b[8] & UUID_VARIANT_MASK) == (UUID_VARIANT <<
UUID_VARIANT_SHIFT)); /* variant 1 */
+ }
+
+ return 0;
+}
+
+LIB_TEST(lib_test_uuid_bits, 0);
+
struct dynamic_uuid_test_data {
const char *compatible;
const u16 *images[4];
const char *expected_uuids[4];
--
2.45.2
