def test__get_validated_image_from_context(self):
        clients = mock.MagicMock()
        image = {"size": 0, "min_ram": 0, "min_disk": 0}
        result = validation._get_validated_image(
            {"args": {"image": {"name": "foo"}}, "context": {"images": {"image_name": "foo"}}}, clients, "image"
        )

        self.assertTrue(result[0].is_valid, result[0].msg)
        self.assertEqual(result[1], image)

        result = validation._get_validated_image(
            {"args": {"image": {"regex": r"^foo$"}}, "context": {"images": {"image_name": "foo"}}}, clients, "image"
        )

        self.assertTrue(result[0].is_valid, result[0].msg)
        self.assertEqual(result[1], image)

 def test__get_validated_image_not_found(
         self, mock_glance_image_transform):
     clients = mock.MagicMock()
     clients.glance().images.get().to_dict.side_effect = (
         glance_exc.HTTPNotFound(""))
     result = validation._get_validated_image({"args": {"a": "test"}},
                                              clients, "a")
     self.assertFalse(result[0].is_valid, result[0].msg)

    def test__get_validated_image(self, mock_image_resource_type_transform):
        clients = mock.MagicMock()
        clients.glance().images.get().to_dict.return_value = {"image": "image_id"}

        result = validation._get_validated_image(
            {"args": {"a": "test"}, "context": {"image_name": "foo"}}, clients, "a"
        )
        self.assertTrue(result[0].is_valid, result[0].msg)
        self.assertEqual({"image": "image_id", "min_disk": 0, "min_ram": 0, "size": 0}, result[1])
        mock_image_resource_type_transform.assert_called_once_with(clients=clients, resource_config="test")
        clients.glance().images.get.assert_called_with(image="image_id")

 def test__get_validated_image_transform_error(
         self, mock_glance_image_transform):
     result = validation._get_validated_image({"args": {"a": "test"}},
                                              None, "a")
     self.assertFalse(result[0].is_valid, result[0].msg)

 def test__get_validated_image_no_value_in_config(self):
     result = validation._get_validated_image({}, None, "non_existing")
     self.assertFalse(result[0].is_valid, result[0].msg)