def test_render_without_value(self):
"""
If value not passed, use super widget.
"""
widget = widgets.ImageClearableFileInput()
base_widget = ClearableFileInput()
html = widget.render('photo', None)
base_html = base_widget.render('photo', None)
self.assertEqual(base_html, html)
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'
image = self.create_image(None, file_name) # storage=None to get raw content
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
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.
def render(self, name, value, attrs=None):
output = ClearableFileInput.render(self, name, value, attrs)
output += self.output_extra_data(value)
return mark_safe(output)
