Fixed #33872 -- Deprecated django.contrib.postgres.fields.CIText/CICharField/CIEmailField/CITextField.

tests/postgres_tests/fields.py

@@ -7,12 +7,12 @@ import enum
 from django.db import models
 
 try:
+    from django.contrib.postgres.fields import CICharField  # RemovedInDjango51Warning.
+    from django.contrib.postgres.fields import CIEmailField  # RemovedInDjango51Warning.
+    from django.contrib.postgres.fields import CITextField  # RemovedInDjango51Warning.
     from django.contrib.postgres.fields import (
         ArrayField,
         BigIntegerRangeField,
-        CICharField,
-        CIEmailField,
-        CITextField,
         DateRangeField,
         DateTimeRangeField,
         DecimalRangeField,
@@ -47,9 +47,9 @@ except ImportError:
 
     ArrayField = DummyArrayField
     BigIntegerRangeField = models.Field
-    CICharField = models.Field
-    CIEmailField = models.Field
-    CITextField = models.Field
+    CICharField = models.Field  # RemovedInDjango51Warning.
+    CIEmailField = models.Field  # RemovedInDjango51Warning.
+    CITextField = models.Field  # RemovedInDjango51Warning.
     DateRangeField = models.Field
     DateTimeRangeField = DummyContinuousRangeField
     DecimalRangeField = DummyContinuousRangeField

tests/postgres_tests/migrations/0002_create_test_models.py

@@ -291,6 +291,7 @@ class Migration(migrations.Migration):
             options=None,
             bases=None,
         ),
+        # RemovedInDjango51Warning.
         migrations.CreateModel(
             name="CITestModel",
             fields=[

tests/postgres_tests/models.py

@@ -119,6 +119,7 @@ class Character(models.Model):
     name = models.CharField(max_length=255)
 
 
+# RemovedInDjango51Warning.
 class CITestModel(PostgreSQLModel):
     name = CICharField(primary_key=True, max_length=255)
     email = CIEmailField()

tests/postgres_tests/test_citext.py

@@ -1,3 +1,4 @@
+# RemovedInDjango51Warning.
 """
 The citext PostgreSQL extension supports indexing of case-insensitive text
 strings and thus eliminates the need for operations such as iexact and other
@@ -5,6 +6,7 @@ modifiers to enforce use of an index.
 """
 from django.db import IntegrityError
 from django.test.utils import modify_settings
+from django.utils.deprecation import RemovedInDjango51Warning
 
 from . import PostgreSQLTestCase
 from .models import CITestModel
@@ -82,3 +84,10 @@ class CITextTestCase(PostgreSQLTestCase):
                 self.assertSequenceEqual(
                     CITestModel.objects.filter(**query), [self.john]
                 )
+
+    def test_citext_deprecated(self):
+        from django.contrib.postgres.fields import CIText
+
+        msg = "django.contrib.postgres.fields.CIText mixin is deprecated."
+        with self.assertRaisesMessage(RemovedInDjango51Warning, msg):
+            CIText()