test_generic_uploader.py 文件源码

def test_crop(self):
        """Test UPLOADER crop works."""
        u = Uploader()
        size = (100, 100)
        im = Image.new('RGB', size)
        folder = tempfile.mkdtemp()
        u.upload_folder = folder
        im.save(os.path.join(folder, 'image.png'))
        coordinates = (0, 0, 50, 50)
        file = FileStorage(filename=os.path.join(folder, 'image.png'))
        with patch('pybossa.uploader.Image', return_value=True):
            err_msg = "It should crop the image"
            assert u.crop(file, coordinates) is True, err_msg

        with patch('pybossa.uploader.Image.open', side_effect=IOError):
            err_msg = "It should return false"
            assert u.crop(file, coordinates) is False, err_msg