def test_repository_is_replaced(self, monkeypatch):
task = PullImage(repository="original")
api = MagicMock()
monkeypatch.setattr("docker.APIClient", api)
task.run(repository="test")
assert api.return_value.pull.call_args[1]["repository"] == "test"
def test_repository_run_value_is_used(self, monkeypatch):
task = PullImage()
api = MagicMock()
monkeypatch.setattr("prefect.tasks.docker.containers.docker.APIClient",
api)
task.run(repository="test")
assert api.return_value.pull.call_args[1]["repository"] == "test"
def test_returns_pull_value_with_stream_logs(self, monkeypatch, caplog):
task = PullImage()
api = MagicMock()
expected_docker_output = [
{
"status": "Pulling"
},
{
"status": "Digest"
},
{
"status": "Test"
},
]
expected_result = (
"{'status': 'Pulling'}\n{'status': 'Digest'}\n{'status': 'Test'}")
api.return_value.pull = MagicMock(return_value=expected_docker_output)
monkeypatch.setattr("docker.APIClient", api)
with caplog.at_level(logging.DEBUG, logger=task.logger.name):
result = task.run(repository="original", stream_logs=True)
assert result == expected_result
def test_returns_pull_value(self, monkeypatch, caplog):
task = PullImage(repository="original")
api = MagicMock()
expected_docker_output = "A real output from docker's api"
api.return_value.pull = MagicMock(return_value=expected_docker_output)
monkeypatch.setattr("docker.APIClient", api)
with caplog.at_level(logging.DEBUG, logger=task.logger.name):
result = task.run(repository="test")
assert result == expected_docker_output
def test_invalid_repository_raises_error(self):
task = PullImage()
with pytest.raises(ValueError):
task.run(repository=None)
def test_empty_repository_raises_error(self):
task = PullImage()
with pytest.raises(ValueError):
task.run()