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from django.forms import FileInput
from .base import WidgetTest
class FileInputTest(WidgetTest):
widget = FileInput()
def test_render(self):
"""
FileInput widgets never render the value attribute. The old value
isn't useful if a form is updated or an error occurred.
"""
self.check_html(self.widget, 'email', 'test@example.com', html='<input type="file" name="email">')
self.check_html(self.widget, 'email', '', html='<input type="file" name="email">')
self.check_html(self.widget, 'email', None, html='<input type="file" name="email">')
def test_value_omitted_from_data(self):
self.assertIs(self.widget.value_omitted_from_data({}, {}, 'field'), True)
self.assertIs(self.widget.value_omitted_from_data({}, {'field': 'value'}, 'field'), False)
def test_use_required_attribute(self):
# False when initial data exists. The file input is left blank by the
# user to keep the existing, initial value.
self.assertIs(self.widget.use_required_attribute(None), True)
self.assertIs(self.widget.use_required_attribute('resume.txt'), False)
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