@@ -0,0 +1,694 @@
+import mock%0A%0Afrom paasta_tools.paasta_cli.cmds.cook_image import paasta_cook_image%0A%0A%0A@mock.patch('paasta_tools.paasta_cli.cmds.cook_image.validate_service_name', autospec=True)%0A@mock.patch('paasta_tools.paasta_cli.cmds.cook_image.makefile_responds_to', autospec=True)%0A@mock.patch('paasta_tools.paasta_cli.cmds.cook_image._run', autospec=True)%0Adef test_run_success(%0A    mock_run,%0A    mock_makefile_responds_to,%0A    mock_validate_service_name,%0A):%0A    mock_run.return_value = (0, 'Output')%0A    mock_makefile_responds_to.return_value = True%0A    mock_validate_service_name.return_value = True%0A%0A    args = mock.MagicMock()%0A    args.service = 'fake_service'%0A    assert paasta_cook_image(args) is None%0A

Add simple cook_image test