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test: lib/uuid: add tests for UUID version/variant bits

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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>
This commit is contained in:
Caleb Connolly
2024-08-30 13:34:41 +01:00
committed by Heinrich Schuchardt
parent 26e16a850e
commit 22d3d3cd49
1 changed files with 41 additions and 0 deletions
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41
test/lib/uuid.c
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@@ -43,6 +43,47 @@ static int lib_test_uuid_to_le(struct unit_test_state *uts)
} }
LIB_TEST(lib_test_uuid_to_le, 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 { struct dynamic_uuid_test_data {
const char *compatible; const char *compatible;
const u16 *images[4]; const u16 *images[4];