From 0839a0046a09bc80a9cfe02dcc462cb9e4dc2521 Mon Sep 17 00:00:00 2001
From: Malcolm Tredinnick <malcolm.tredinnick@gmail.com>
Date: Tue, 8 May 2007 04:13:46 +0000
Subject: [PATCH] Fixed #4041 -- Added a __contains__ method to cache backends.
 Thanks, Gary Wilson and SmileyChris.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@5171 bcc190cf-cafb-0310-a4f2-bffc1f526a37
---
 django/core/cache/backends/base.py   | 3 +++
 tests/regressiontests/cache/tests.py | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/django/core/cache/backends/base.py b/django/core/cache/backends/base.py
index ef5f6a6b3e..bb67399f3b 100644
--- a/django/core/cache/backends/base.py
+++ b/django/core/cache/backends/base.py
@@ -54,3 +54,6 @@ class BaseCache(object):
         Returns True if the key is in the cache and has not expired.
         """
         return self.get(key) is not None
+
+    __contains__ = has_key
+
diff --git a/tests/regressiontests/cache/tests.py b/tests/regressiontests/cache/tests.py
index cf58ab321a..9dc7161c03 100644
--- a/tests/regressiontests/cache/tests.py
+++ b/tests/regressiontests/cache/tests.py
@@ -46,6 +46,11 @@ class Cache(unittest.TestCase):
         self.assertEqual(cache.has_key("hello"), True)
         self.assertEqual(cache.has_key("goodbye"), False)
 
+    def test_in(self): 
+        cache.set("hello", "goodbye") 
+        self.assertEqual("hello" in cache, True) 
+        self.assertEqual("goodbye" in cache, False) 
+
     def test_data_types(self):
         # test data types
         stuff = {