Added tests for cache middlewares constructors.

tests/cache/tests.py

@@ -2083,6 +2083,7 @@ class CacheMiddlewareTest(SimpleTestCase):
         self.assertEqual(middleware.cache_timeout, 30)
         self.assertEqual(middleware.key_prefix, 'middlewareprefix')
         self.assertEqual(middleware.cache_alias, 'other')
+        self.assertEqual(middleware.cache, self.other_cache)
 
         # If more arguments are being passed in construction, it's being used
         # as a decorator. First, test with "defaults":
@@ -2092,6 +2093,7 @@ class CacheMiddlewareTest(SimpleTestCase):
         self.assertEqual(as_view_decorator.key_prefix, '')
         # Value of DEFAULT_CACHE_ALIAS from django.core.cache
         self.assertEqual(as_view_decorator.cache_alias, 'default')
+        self.assertEqual(as_view_decorator.cache, self.default_cache)
 
         # Next, test with custom values:
         as_view_decorator_with_custom = CacheMiddleware(
@@ -2101,6 +2103,21 @@ class CacheMiddlewareTest(SimpleTestCase):
         self.assertEqual(as_view_decorator_with_custom.cache_timeout, 60)
         self.assertEqual(as_view_decorator_with_custom.key_prefix, 'foo')
         self.assertEqual(as_view_decorator_with_custom.cache_alias, 'other')
+        self.assertEqual(as_view_decorator_with_custom.cache, self.other_cache)
+
+    def test_update_cache_middleware_constructor(self):
+        middleware = UpdateCacheMiddleware(empty_response)
+        self.assertEqual(middleware.cache_timeout, 30)
+        self.assertIsNone(middleware.page_timeout)
+        self.assertEqual(middleware.key_prefix, 'middlewareprefix')
+        self.assertEqual(middleware.cache_alias, 'other')
+        self.assertEqual(middleware.cache, self.other_cache)
+
+    def test_fetch_cache_middleware_constructor(self):
+        middleware = FetchFromCacheMiddleware(empty_response)
+        self.assertEqual(middleware.key_prefix, 'middlewareprefix')
+        self.assertEqual(middleware.cache_alias, 'other')
+        self.assertEqual(middleware.cache, self.other_cache)
 
     def test_middleware(self):
         middleware = CacheMiddleware(hello_world_view)