django/tests/forms_tests/field_tests/test_nullbooleanfield.py

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from django.forms import Form, HiddenInput, NullBooleanField, RadioSelect
from django.test import SimpleTestCase
from . import FormFieldAssertionsMixin
class NullBooleanFieldTest(FormFieldAssertionsMixin, SimpleTestCase):
def test_nullbooleanfield_clean(self):
f = NullBooleanField()
self.assertIsNone(f.clean(''))
self.assertTrue(f.clean(True))
self.assertFalse(f.clean(False))
self.assertIsNone(f.clean(None))
self.assertFalse(f.clean('0'))
self.assertTrue(f.clean('1'))
self.assertIsNone(f.clean('2'))
self.assertIsNone(f.clean('3'))
self.assertIsNone(f.clean('hello'))
self.assertTrue(f.clean('true'))
self.assertFalse(f.clean('false'))
def test_nullbooleanfield_2(self):
# The internal value is preserved if using HiddenInput (#7753).
class HiddenNullBooleanForm(Form):
hidden_nullbool1 = NullBooleanField(widget=HiddenInput, initial=True)
hidden_nullbool2 = NullBooleanField(widget=HiddenInput, initial=False)
f = HiddenNullBooleanForm()
self.assertHTMLEqual(
'<input type="hidden" name="hidden_nullbool1" value="True" id="id_hidden_nullbool1" />'
'<input type="hidden" name="hidden_nullbool2" value="False" id="id_hidden_nullbool2" />',
str(f)
)
def test_nullbooleanfield_3(self):
class HiddenNullBooleanForm(Form):
hidden_nullbool1 = NullBooleanField(widget=HiddenInput, initial=True)
hidden_nullbool2 = NullBooleanField(widget=HiddenInput, initial=False)
f = HiddenNullBooleanForm({'hidden_nullbool1': 'True', 'hidden_nullbool2': 'False'})
self.assertIsNone(f.full_clean())
self.assertTrue(f.cleaned_data['hidden_nullbool1'])
self.assertFalse(f.cleaned_data['hidden_nullbool2'])
def test_nullbooleanfield_4(self):
# Make sure we're compatible with MySQL, which uses 0 and 1 for its
# boolean values (#9609).
NULLBOOL_CHOICES = (('1', 'Yes'), ('0', 'No'), ('', 'Unknown'))
class MySQLNullBooleanForm(Form):
nullbool0 = NullBooleanField(widget=RadioSelect(choices=NULLBOOL_CHOICES))
nullbool1 = NullBooleanField(widget=RadioSelect(choices=NULLBOOL_CHOICES))
nullbool2 = NullBooleanField(widget=RadioSelect(choices=NULLBOOL_CHOICES))
f = MySQLNullBooleanForm({'nullbool0': '1', 'nullbool1': '0', 'nullbool2': ''})
self.assertIsNone(f.full_clean())
self.assertTrue(f.cleaned_data['nullbool0'])
self.assertFalse(f.cleaned_data['nullbool1'])
self.assertIsNone(f.cleaned_data['nullbool2'])
def test_nullbooleanfield_changed(self):
f = NullBooleanField()
self.assertTrue(f.has_changed(False, None))
self.assertTrue(f.has_changed(None, False))
self.assertFalse(f.has_changed(None, None))
self.assertFalse(f.has_changed(False, False))
self.assertTrue(f.has_changed(True, False))
self.assertTrue(f.has_changed(True, None))
self.assertTrue(f.has_changed(True, False))
# HiddenInput widget sends string values for boolean but doesn't clean them in value_from_datadict
self.assertFalse(f.has_changed(False, 'False'))
self.assertFalse(f.has_changed(True, 'True'))
self.assertFalse(f.has_changed(None, ''))
self.assertTrue(f.has_changed(False, 'True'))
self.assertTrue(f.has_changed(True, 'False'))
self.assertTrue(f.has_changed(None, 'False'))