test for None if invalid uuid

tests/test_secrets.py

@@ -29,11 +29,14 @@ class TestSecretsBackend(TestCase):
 
     def test_uuid_validation(self):
         self.assertTrue(validate_uuid(str(uuid.uuid4())))
-        self.assertFalse(validate_uuid("wrong_uuid"))
+        self.assertFalse(validate_uuid("invalid_uuid"))
     
     def test_no_error_on_missing_extra(self):
         get_connection_with_secrets_from_entry({"name" : "some-name", "url" : "some_url", "metadata" : {}}, {}, "test-connection", 'false_oid')
 
+    def test_None_on_invalid_uuid(self):
+        self.assertIsNone(self.backend.get_connection("invalid_uuid"))
+
 
 class TestSecretsConnection(TestCase):
     def setUp(self):