def test_get_image_returns_local_build_string_when_no_image_specified(
            self):
        example_service = {}

        service = ServiceDeclaration('iwa_ait', example_service)
        self.assertEqual('_docker_build_local:latest', service.get_image())
    def test_get_image_returns_declared_image(self):
        example_service = {'image': 'nginx:1.19'}

        service = ServiceDeclaration('iwa_ait', example_service)
        self.assertEqual('nginx:1.19', service.get_image())