from django.core.files.uploadedfile import SimpleUploadedFile from django.forms import ClearableFileInput from django.utils.encoding import python_2_unicode_compatible from .base import WidgetTest @python_2_unicode_compatible class FakeFieldFile(object): """ Quacks like a FieldFile (has a .url and unicode representation), but doesn't require us to care about storages etc. """ url = 'something' def __str__(self): return self.url class ClearableFileInputTest(WidgetTest): widget = ClearableFileInput() def test_clear_input_renders(self): """ A ClearableFileInput with is_required False and rendered with an initial value that is a file renders a clear checkbox. """ self.check_html(self.widget, 'myfile', FakeFieldFile(), html=( """ Currently: something
Change: """ )) def test_html_escaped(self): """ A ClearableFileInput should escape name, filename, and URL when rendering HTML (#15182). """ @python_2_unicode_compatible class StrangeFieldFile(object): url = "something?chapter=1§=2©=3&lang=en" def __str__(self): return '''something
.jpg''' self.check_html(ClearableFileInput(), 'my
file', StrangeFieldFile(), html=( """ Currently: something<div onclick="alert('oops')">.jpg
Change: """ )) def test_clear_input_renders_only_if_not_required(self): """ A ClearableFileInput with is_required=False does not render a clear checkbox. """ widget = ClearableFileInput() widget.is_required = True self.check_html(widget, 'myfile', FakeFieldFile(), html=( """ Currently: something
Change: """ )) def test_clear_input_renders_only_if_initial(self): """ A ClearableFileInput instantiated with no initial value does not render a clear checkbox. """ self.check_html(self.widget, 'myfile', None, html='') def test_clear_input_checked_returns_false(self): """ ClearableFileInput.value_from_datadict returns False if the clear checkbox is checked, if not required. """ value = self.widget.value_from_datadict( data={'myfile-clear': True}, files={}, name='myfile', ) self.assertIs(value, False) def test_clear_input_checked_returns_false_only_if_not_required(self): """ ClearableFileInput.value_from_datadict never returns False if the field is required. """ widget = ClearableFileInput() widget.is_required = True field = SimpleUploadedFile('something.txt', b'content') value = widget.value_from_datadict( data={'myfile-clear': True}, files={'myfile': field}, name='myfile', ) self.assertEqual(value, field) def test_html_does_not_mask_exceptions(self): """ A ClearableFileInput should not mask exceptions produced while checking that it has a value. """ @python_2_unicode_compatible class FailingURLFieldFile(object): @property def url(self): raise ValueError('Canary') def __str__(self): return 'value' with self.assertRaisesMessage(ValueError, 'Canary'): self.widget.render('myfile', FailingURLFieldFile()) def test_url_as_property(self): @python_2_unicode_compatible class URLFieldFile(object): @property def url(self): return 'https://www.python.org/' def __str__(self): return 'value' html = self.widget.render('myfile', URLFieldFile()) self.assertInHTML('value', html) def test_return_false_if_url_does_not_exists(self): @python_2_unicode_compatible class NoURLFieldFile(object): def __str__(self): return 'value' html = self.widget.render('myfile', NoURLFieldFile()) self.assertHTMLEqual(html, '')