[1.11.x] Fixed #28702 -- Made query lookups for CIText fields use citext.

Backport of f0a68c25118786d47041d0a435b2afa953be3c86 from master

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/postgres_tests/test_citext.py b/tests/postgres_tests/test_citext.py
index 0a7012b072..22dc9e7431 100644
--- a/tests/postgres_tests/test_citext.py
+++ b/tests/postgres_tests/test_citext.py
@@ -12,6 +12,7 @@ from .models import CITestModel
 
 @modify_settings(INSTALLED_APPS={'append': 'django.contrib.postgres'})
 class CITextTestCase(PostgreSQLTestCase):
+    case_sensitive_lookups = ('contains', 'startswith', 'endswith', 'regex')
 
     @classmethod
     def setUpTestData(cls):
@@ -42,3 +43,18 @@ class CITextTestCase(PostgreSQLTestCase):
         instance = CITestModel.objects.get()
         self.assertEqual(instance.array_field, self.john.array_field)
         self.assertTrue(CITestModel.objects.filter(array_field__contains=['joe']).exists())
+
+    def test_lookups_name_char(self):
+        for lookup in self.case_sensitive_lookups:
+            query = {'name__{}'.format(lookup): 'john'}
+            self.assertSequenceEqual(CITestModel.objects.filter(**query), [self.john])
+
+    def test_lookups_description_text(self):
+        for lookup, string in zip(self.case_sensitive_lookups, ('average', 'average joe', 'john', 'Joe.named')):
+            query = {'description__{}'.format(lookup): string}
+            self.assertSequenceEqual(CITestModel.objects.filter(**query), [self.john])
+
+    def test_lookups_email(self):
+        for lookup, string in zip(self.case_sensitive_lookups, ('john', 'john', 'john.com', 'john.com')):
+            query = {'email__{}'.format(lookup): string}
+            self.assertSequenceEqual(CITestModel.objects.filter(**query), [self.john])