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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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