Add a test to check the version/variant bits of v4 and v5 UUIDs.
Acked-by: Ilias Apalodimas ilias.apalodimas@linaro.org Signed-off-by: Caleb Connolly caleb.connolly@linaro.org --- test/lib/uuid.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+)
diff --git a/test/lib/uuid.c b/test/lib/uuid.c index 4a1a16b4f315..bf5d5afdb521 100644 --- a/test/lib/uuid.c +++ b/test/lib/uuid.c @@ -42,8 +42,49 @@ static int lib_test_uuid_to_le(struct unit_test_state *uts) return 0; } LIB_TEST(lib_test_uuid_to_le, 0);
+#if defined(CONFIG_RANDOM_UUID) || defined(CONFIG_CMD_UUID) +/* 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); + + /* version 4 */ + ut_assert((uuid[6] & 0xf0) == 0x40); + /* variant 1 */ + ut_assert((uuid[8] & UUID_VARIANT_MASK) == (UUID_VARIANT << UUID_VARIANT_SHIFT)); + + /* 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). Version 5 */ + ut_assert((guid.b[7] & 0xf0) == 0x50); + /* variant 1 */ + ut_assert((guid.b[8] & UUID_VARIANT_MASK) == (UUID_VARIANT << UUID_VARIANT_SHIFT)); + } + + return 0; +} + +LIB_TEST(lib_test_uuid_bits, 0); +#endif + struct dynamic_uuid_test_data { const char *compatible; const u16 *images[4]; const char *expected_uuids[4];