test_widgets.py 文件源码

def test_render_uploaded(self):
        """
        The widget treats UploadedFile as no input.

        Rationale:
        When widget is used in ModelForm and the form (submitted with upload)
        is not valid, widget should discard the value (just like standard
        Django ClearableFileInput does).
        """
        widget = widgets.ImageClearableFileInput()
        base_widget = ClearableFileInput()
        file_name = 'test.jpg'
        # storage=None to get raw content.
        image = self.create_image(None, file_name)
        upload_file = SimpleUploadedFile(file_name, image.getvalue())
        html = widget.render('photo', upload_file)
        base_html = base_widget.render('photo', upload_file)
        self.assertEqual(base_html, html)
        self.assertNotIn(file_name, html)   # Widget is empty.