Mock SSL credentials for MTLS test cases

tests/system/conftest.py

@@ -127,10 +127,22 @@ def identity():
 
 @pytest.fixture
 def async_identity():
- transport = IdentityAsyncClient.get_transport_class('grpc_asyncio')(
- channel=aio.insecure_channel('localhost:7469'),
- )
- return IdentityAsyncClient(transport=transport)
+ if use_mtls:
+ with mock.patch("grpc.ssl_channel_credentials", autospec=True) as mock_ssl_cred:
+ mock_ssl_cred.return_value = ssl_credentials
+ client = IdentityAsyncClient(
+ credentials=credentials.AnonymousCredentials(),
+ client_options=client_options,
+ )
+ mock_ssl_cred.assert_called_once_with(
+ certificate_chain=cert, private_key=key
+ )
+ return client
+ else:
+ transport = IdentityAsyncClient.get_transport_class('grpc_asyncio')(
+ channel=aio.insecure_channel('localhost:7469'),
+ )
+ return IdentityAsyncClient(transport=transport)
 
 
 @pytest.fixture