61 lines
2.5 KiB
Python
61 lines
2.5 KiB
Python
"""
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The citext PostgreSQL extension supports indexing of case-insensitive text
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strings and thus eliminates the need for operations such as iexact and other
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modifiers to enforce use of an index.
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"""
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from django.db import IntegrityError
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from django.test.utils import modify_settings
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from . import PostgreSQLTestCase
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from .models import CITestModel
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@modify_settings(INSTALLED_APPS={'append': 'django.contrib.postgres'})
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class CITextTestCase(PostgreSQLTestCase):
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case_sensitive_lookups = ('contains', 'startswith', 'endswith', 'regex')
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@classmethod
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def setUpTestData(cls):
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cls.john = CITestModel.objects.create(
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name='JoHn',
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email='joHn@johN.com',
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description='Average Joe named JoHn',
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array_field=['JoE', 'jOhn'],
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)
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def test_equal_lowercase(self):
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"""
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citext removes the need for iexact as the index is case-insensitive.
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"""
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self.assertEqual(CITestModel.objects.filter(name=self.john.name.lower()).count(), 1)
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self.assertEqual(CITestModel.objects.filter(email=self.john.email.lower()).count(), 1)
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self.assertEqual(CITestModel.objects.filter(description=self.john.description.lower()).count(), 1)
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def test_fail_citext_primary_key(self):
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"""
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Creating an entry for a citext field used as a primary key which
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clashes with an existing value isn't allowed.
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"""
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with self.assertRaises(IntegrityError):
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CITestModel.objects.create(name='John')
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def test_array_field(self):
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instance = CITestModel.objects.get()
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self.assertEqual(instance.array_field, self.john.array_field)
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self.assertTrue(CITestModel.objects.filter(array_field__contains=['joe']).exists())
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def test_lookups_name_char(self):
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for lookup in self.case_sensitive_lookups:
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query = {'name__{}'.format(lookup): 'john'}
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self.assertSequenceEqual(CITestModel.objects.filter(**query), [self.john])
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def test_lookups_description_text(self):
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for lookup, string in zip(self.case_sensitive_lookups, ('average', 'average joe', 'john', 'Joe.named')):
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query = {'description__{}'.format(lookup): string}
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self.assertSequenceEqual(CITestModel.objects.filter(**query), [self.john])
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def test_lookups_email(self):
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for lookup, string in zip(self.case_sensitive_lookups, ('john', 'john', 'john.com', 'john.com')):
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query = {'email__{}'.format(lookup): string}
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self.assertSequenceEqual(CITestModel.objects.filter(**query), [self.john])
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