def test_server_role_key_throws_exception(self):
     with self.assertRaises(ValueError) as cm:
         key_naming_convention.get_server_role_key(None)
     error = cm.exception
     self.assertEqual(str(error), 'environment must be specified.')
 def test_server_role_key(self):
     self.assertEqual(
         key_naming_convention.get_server_role_key(
             MockEnvironment('env', 'role')), 'environments/env/roles/role')