[1.9.x] Fixed #25900 -- Fixed regression in CommonMiddleware ETag support.

Backport of 6be9589eb34f79914666c9d9e1e15bdb7fc44df2 from master

1 files changed, 10 insertions, 0 deletions

diff --git a/tests/middleware/tests.py b/tests/middleware/tests.py
index 7ccfd919cc..3e18ee7645 100644
--- a/tests/middleware/tests.py
+++ b/tests/middleware/tests.py
@@ -291,6 +291,16 @@ class CommonMiddlewareTest(SimpleTestCase):
         res = StreamingHttpResponse(['content'])
         self.assertFalse(CommonMiddleware().process_response(req, res).has_header('ETag'))
 
+    @override_settings(USE_ETAGS=True)
+    def test_if_none_match(self):
+        first_req = HttpRequest()
+        first_res = CommonMiddleware().process_response(first_req, HttpResponse('content'))
+        second_req = HttpRequest()
+        second_req.method = 'GET'
+        second_req.META['HTTP_IF_NONE_MATCH'] = first_res['ETag']
+        second_res = CommonMiddleware().process_response(second_req, HttpResponse('content'))
+        self.assertEqual(second_res.status_code, 304)
+
     # Other tests
 
     @override_settings(DISALLOWED_USER_AGENTS=[re.compile(r'foo')])