1. from django.forms import Form, HiddenInput, NullBooleanField, RadioSelect

  2. from django.test import SimpleTestCase

  3. 

  4. from . import FormFieldAssertionsMixin

  5. 

  6. 

  7. class NullBooleanFieldTest(FormFieldAssertionsMixin, SimpleTestCase):

  8.     def test_nullbooleanfield_clean(self):

  9.         f = NullBooleanField()

  10.         self.assertIsNone(f.clean(""))

  11.         self.assertTrue(f.clean(True))

  12.         self.assertFalse(f.clean(False))

  13.         self.assertIsNone(f.clean(None))

  14.         self.assertFalse(f.clean("0"))

  15.         self.assertTrue(f.clean("1"))

  16.         self.assertIsNone(f.clean("2"))

  17.         self.assertIsNone(f.clean("3"))

  18.         self.assertIsNone(f.clean("hello"))

  19.         self.assertTrue(f.clean("true"))

  20.         self.assertFalse(f.clean("false"))

  21. 

  22.     def test_nullbooleanfield_2(self):

  23.         # The internal value is preserved if using HiddenInput (#7753).

  24.         class HiddenNullBooleanForm(Form):

  25.             hidden_nullbool1 = NullBooleanField(widget=HiddenInput, initial=True)

  26.             hidden_nullbool2 = NullBooleanField(widget=HiddenInput, initial=False)

  27. 

  28.         f = HiddenNullBooleanForm()

  29.         self.assertHTMLEqual(

  30.             str(f),

  31.             '<input type="hidden" name="hidden_nullbool1" value="True" '

  32.             'id="id_hidden_nullbool1">'

  33.             '<input type="hidden" name="hidden_nullbool2" value="False" '

  34.             'id="id_hidden_nullbool2">',

  35.         )

  36. 

  37.     def test_nullbooleanfield_3(self):

  38.         class HiddenNullBooleanForm(Form):

  39.             hidden_nullbool1 = NullBooleanField(widget=HiddenInput, initial=True)

  40.             hidden_nullbool2 = NullBooleanField(widget=HiddenInput, initial=False)

  41. 

  42.         f = HiddenNullBooleanForm(

  43.             {"hidden_nullbool1": "True", "hidden_nullbool2": "False"}

  44.         )

  45.         self.assertIsNone(f.full_clean())

  46.         self.assertTrue(f.cleaned_data["hidden_nullbool1"])

  47.         self.assertFalse(f.cleaned_data["hidden_nullbool2"])

  48. 

  49.     def test_nullbooleanfield_4(self):

  50.         # Make sure we're compatible with MySQL, which uses 0 and 1 for its

  51.         # boolean values (#9609).

  52.         NULLBOOL_CHOICES = (("1", "Yes"), ("0", "No"), ("", "Unknown"))

  53. 

  54.         class MySQLNullBooleanForm(Form):

  55.             nullbool0 = NullBooleanField(widget=RadioSelect(choices=NULLBOOL_CHOICES))

  56.             nullbool1 = NullBooleanField(widget=RadioSelect(choices=NULLBOOL_CHOICES))

  57.             nullbool2 = NullBooleanField(widget=RadioSelect(choices=NULLBOOL_CHOICES))

  58. 

  59.         f = MySQLNullBooleanForm({"nullbool0": "1", "nullbool1": "0", "nullbool2": ""})

  60.         self.assertIsNone(f.full_clean())

  61.         self.assertTrue(f.cleaned_data["nullbool0"])

  62.         self.assertFalse(f.cleaned_data["nullbool1"])

  63.         self.assertIsNone(f.cleaned_data["nullbool2"])

  64. 

  65.     def test_nullbooleanfield_changed(self):

  66.         f = NullBooleanField()

  67.         self.assertTrue(f.has_changed(False, None))

  68.         self.assertTrue(f.has_changed(None, False))

  69.         self.assertFalse(f.has_changed(None, None))

  70.         self.assertFalse(f.has_changed(False, False))

  71.         self.assertTrue(f.has_changed(True, False))

  72.         self.assertTrue(f.has_changed(True, None))

  73.         self.assertTrue(f.has_changed(True, False))

  74.         # HiddenInput widget sends string values for boolean but doesn't clean

  75.         # them in value_from_datadict.

  76.         self.assertFalse(f.has_changed(False, "False"))

  77.         self.assertFalse(f.has_changed(True, "True"))

  78.         self.assertFalse(f.has_changed(None, ""))

  79.         self.assertTrue(f.has_changed(False, "True"))

  80.         self.assertTrue(f.has_changed(True, "False"))

  81.         self.assertTrue(f.has_changed(None, "False"))
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