1 files changed, 9 insertions, 0 deletions
diff --git a/tests/postgres_tests/test_hstore.py b/tests/postgres_tests/test_hstore.py
index dd8e642ed0..3ac68e1e69 100644
--- a/tests/postgres_tests/test_hstore.py
+++ b/tests/postgres_tests/test_hstore.py
@@ -5,6 +5,7 @@ import json
 
 from django.core import exceptions, serializers
 from django.db import connection
+from django.db.models.expressions import RawSQL
 from django.forms import Form
 from django.test.utils import CaptureQueriesContext, modify_settings
 
@@ -14,6 +15,7 @@ from .models import HStoreModel
 try:
     from django.contrib.postgres import forms
     from django.contrib.postgres.fields import HStoreField
+    from django.contrib.postgres.fields.hstore import KeyTransform
     from django.contrib.postgres.validators import KeysValidator
 except ImportError:
     pass
@@ -121,6 +123,13 @@ class TestQuerying(HStoreTestCase):
             self.objs[:2]
         )
 
+    def test_key_transform_raw_expression(self):
+        expr = RawSQL('%s::hstore', ['x => b, y => c'])
+        self.assertSequenceEqual(
+            HStoreModel.objects.filter(field__a=KeyTransform('x', expr)),
+            self.objs[:2]
+        )
+
     def test_keys(self):
         self.assertSequenceEqual(
             HStoreModel.objects.filter(field__keys=['a']),