1 files changed, 19 insertions, 0 deletions
diff --git a/tests/postgres_tests/test_citext.py b/tests/postgres_tests/test_citext.py
index 0a7012b072..350f34ba33 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 +43,21 @@ 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:
+            with self.subTest(lookup=lookup):
+                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')):
+            with self.subTest(lookup=lookup, string=string):
+                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')):
+            with self.subTest(lookup=lookup, string=string):
+                query = {'email__{}'.format(lookup): string}
+                self.assertSequenceEqual(CITestModel.objects.filter(**query), [self.john])