def test__get_raw_image(self):
Gallery._raw_images["existing_key"] = "data"
self.assertEqual("data", Gallery._get_raw_image("existing_key"))
def test__get_raw_image_non_existing_key(self, pillow_open):
self.assertEqual("data", Gallery._get_raw_image("non_existing_key"))
pillow_open.assert_called_once_with("img/non_existing_key.png")
