Fixed #17286 -- Made sure all cache backends are set up to connect to the signal handler that closes the cache connection when the request has been processed. Thanks, gnosek.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17479 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/cache/tests.py

@@ -1040,6 +1040,13 @@ class GetCacheTests(unittest.TestCase):
 
         self.assertRaises(InvalidCacheBackendError, get_cache, 'does_not_exist')
 
+    def test_close(self):
+        from django.core import signals
+        cache = get_cache('regressiontests.cache.closeable_cache.CacheClass')
+        self.assertFalse(cache.closed)
+        signals.request_finished.send(self.__class__)
+        self.assertTrue(cache.closed)
+
 
 class CacheUtils(TestCase):
     """TestCase for django.utils.cache functions."""