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test_choicefield.py
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test_choicefield.py
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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)
self.assertEqual(f.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")