def test_a_wrong_uuid4_array_fails(self):
try:
bytes_to_uuid4(os.urandom(16))
except ValueError:
pass
else:
self.fail("16 random bytes shouldn't make a valid UUID4")
def test_a_made_up_uuid4_should_return_the_same_uuid4(self):
uuid = generate_made_up_uuid4()
uuid_bytes = uuid4_to_bytes(uuid)
bytes_uuid = bytes_to_uuid4(uuid_bytes)
self.assertEqual(uuid, bytes_uuid)
def test_bytes_are_valids_uuid4(self):
valid = UUID4_VALIDATOR.match(bytes_to_uuid4(os.urandom(14)))
assert valid, "14 random bytes should make a valid UUID4"
