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60 lines
2.2 KiB
Python
60 lines
2.2 KiB
Python
from django.core.exceptions import ValidationError
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from django.db import models
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from django.test import SimpleTestCase, TestCase
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from django.utils.functional import lazy
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from .models import Post
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class TestCharField(TestCase):
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def test_max_length_passed_to_formfield(self):
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"""
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CharField passes its max_length attribute to form fields created using
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the formfield() method.
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"""
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cf1 = models.CharField()
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cf2 = models.CharField(max_length=1234)
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self.assertIsNone(cf1.formfield().max_length)
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self.assertEqual(1234, cf2.formfield().max_length)
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def test_lookup_integer_in_charfield(self):
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self.assertEqual(Post.objects.filter(title=9).count(), 0)
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class ValidationTests(SimpleTestCase):
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def test_charfield_raises_error_on_empty_string(self):
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f = models.CharField()
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with self.assertRaises(ValidationError):
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f.clean('', None)
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def test_charfield_cleans_empty_string_when_blank_true(self):
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f = models.CharField(blank=True)
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self.assertEqual('', f.clean('', None))
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def test_charfield_with_choices_cleans_valid_choice(self):
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f = models.CharField(max_length=1, choices=[('a', 'A'), ('b', 'B')])
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self.assertEqual('a', f.clean('a', None))
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def test_charfield_with_choices_raises_error_on_invalid_choice(self):
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f = models.CharField(choices=[('a', 'A'), ('b', 'B')])
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with self.assertRaises(ValidationError):
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f.clean('not a', None)
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def test_charfield_get_choices_with_blank_defined(self):
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f = models.CharField(choices=[('', '<><>'), ('a', 'A')])
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self.assertEqual(f.get_choices(True), [('', '<><>'), ('a', 'A')])
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def test_charfield_get_choices_doesnt_evaluate_lazy_strings(self):
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# Regression test for #23098
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# Will raise ZeroDivisionError if lazy is evaluated
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lazy_func = lazy(lambda x: 0 / 0, int)
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f = models.CharField(choices=[(lazy_func('group'), (('a', 'A'), ('b', 'B')))])
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self.assertEqual(f.get_choices(True)[0], ('', '---------'))
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def test_charfield_raises_error_on_empty_input(self):
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f = models.CharField(null=False)
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with self.assertRaises(ValidationError):
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f.clean(None, None)
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