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from django.core.exceptions import ValidationError
from django.db import models
from django.forms import ChoiceField, Form
from django.test import SimpleTestCase
from . import FormFieldAssertionsMixin
class ChoiceFieldTest(FormFieldAssertionsMixin, SimpleTestCase):
def test_choicefield_1(self):
f = ChoiceField(choices=[('1', 'One'), ('2', 'Two')])
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean('')
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(None)
self.assertEqual('1', f.clean(1))
self.assertEqual('1', f.clean('1'))
msg = "'Select a valid choice. 3 is not one of the available choices.'"
with self.assertRaisesMessage(ValidationError, msg):
f.clean('3')
def test_choicefield_2(self):
f = ChoiceField(choices=[('1', 'One'), ('2', 'Two')], required=False)
self.assertEqual('', f.clean(''))
self.assertEqual('', f.clean(None))
self.assertEqual('1', f.clean(1))
self.assertEqual('1', f.clean('1'))
msg = "'Select a valid choice. 3 is not one of the available choices.'"
with self.assertRaisesMessage(ValidationError, msg):
f.clean('3')
def test_choicefield_3(self):
f = ChoiceField(choices=[('J', 'John'), ('P', 'Paul')])
self.assertEqual('J', f.clean('J'))
msg = "'Select a valid choice. John is not one of the available choices.'"
with self.assertRaisesMessage(ValidationError, msg):
f.clean('John')
def test_choicefield_4(self):
f = ChoiceField(
choices=[
('Numbers', (('1', 'One'), ('2', 'Two'))),
('Letters', (('3', 'A'), ('4', 'B'))), ('5', 'Other'),
]
)
self.assertEqual('1', f.clean(1))
self.assertEqual('1', f.clean('1'))
self.assertEqual('3', f.clean(3))
self.assertEqual('3', f.clean('3'))
self.assertEqual('5', f.clean(5))
self.assertEqual('5', f.clean('5'))
msg = "'Select a valid choice. 6 is not one of the available choices.'"
with self.assertRaisesMessage(ValidationError, msg):
f.clean('6')
def test_choicefield_choices_default(self):
f = ChoiceField()
self.assertEqual(f.choices, [])
def test_choicefield_callable(self):
def choices():
return [('J', 'John'), ('P', 'Paul')]
f = ChoiceField(choices=choices)
self.assertEqual('J', f.clean('J'))
def test_choicefield_callable_may_evaluate_to_different_values(self):
choices = []
def choices_as_callable():
return choices
class ChoiceFieldForm(Form):
choicefield = ChoiceField(choices=choices_as_callable)
choices = [('J', 'John')]
form = ChoiceFieldForm()
self.assertEqual([('J', 'John')], list(form.fields['choicefield'].choices))
choices = [('P', 'Paul')]
form = ChoiceFieldForm()
self.assertEqual([('P', 'Paul')], list(form.fields['choicefield'].choices))
def test_choicefield_disabled(self):
f = ChoiceField(choices=[('J', 'John'), ('P', 'Paul')], disabled=True)
self.assertWidgetRendersTo(
f,
'<select id="id_f" name="f" disabled><option value="J">John</option>'
'<option value="P">Paul</option></select>'
)
def test_choicefield_enumeration(self):
class FirstNames(models.TextChoices):
JOHN = 'J', 'John'
PAUL = 'P', 'Paul'
f = ChoiceField(choices=FirstNames.choices)
self.assertEqual(f.clean('J'), 'J')
msg = "'Select a valid choice. 3 is not one of the available choices.'"
with self.assertRaisesMessage(ValidationError, msg):
f.clean('3')
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