def test_docker_client_default(self):
        self.assertIsInstance(
            ApplicationNodeDeployer(u"example.com", None).docker_client,
            DockerClient
        )
Checks with the given cloud to ensure that the given credentials can be
dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/test/test_container.py/ApplicationNodeDeployerAttributesTests.test_docker_client_default--crossover with--dataset/ETHPy150Open AppScale/appscale-tools/lib/agents/base_agent.py/BaseAgent.assert_credentials_are_valid