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85 lines
3.0 KiB
Python
85 lines
3.0 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(
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CITestModel.objects.filter(name=self.john.name.lower()).count(), 1
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)
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self.assertEqual(
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CITestModel.objects.filter(email=self.john.email.lower()).count(), 1
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)
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self.assertEqual(
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CITestModel.objects.filter(
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description=self.john.description.lower()
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).count(),
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1,
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)
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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(
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CITestModel.objects.filter(array_field__contains=["joe"]).exists()
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)
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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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with self.subTest(lookup=lookup):
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query = {"name__{}".format(lookup): "john"}
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self.assertSequenceEqual(
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CITestModel.objects.filter(**query), [self.john]
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)
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def test_lookups_description_text(self):
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for lookup, string in zip(
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self.case_sensitive_lookups, ("average", "average joe", "john", "Joe.named")
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):
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with self.subTest(lookup=lookup, string=string):
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query = {"description__{}".format(lookup): string}
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self.assertSequenceEqual(
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CITestModel.objects.filter(**query), [self.john]
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)
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def test_lookups_email(self):
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for lookup, string in zip(
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self.case_sensitive_lookups, ("john", "john", "john.com", "john.com")
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):
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with self.subTest(lookup=lookup, string=string):
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query = {"email__{}".format(lookup): string}
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self.assertSequenceEqual(
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CITestModel.objects.filter(**query), [self.john]
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)
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