diff -r 000000000000 -r 6474c204b198 python/mock-1.0.0/tests/testsentinel.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/python/mock-1.0.0/tests/testsentinel.py	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+# Copyright (C) 2007-2012 Michael Foord & the mock team
+# E-mail: fuzzyman AT voidspace DOT org DOT uk
+# http://www.voidspace.org.uk/python/mock/
+
+from tests.support import unittest2
+
+from mock import sentinel, DEFAULT
+
+
+class SentinelTest(unittest2.TestCase):
+
+    def testSentinels(self):
+        self.assertEqual(sentinel.whatever, sentinel.whatever,
+                         'sentinel not stored')
+        self.assertNotEqual(sentinel.whatever, sentinel.whateverelse,
+                            'sentinel should be unique')
+
+
+    def testSentinelName(self):
+        self.assertEqual(str(sentinel.whatever), 'sentinel.whatever',
+                         'sentinel name incorrect')
+
+
+    def testDEFAULT(self):
+        self.assertTrue(DEFAULT is sentinel.DEFAULT)
+
+    def testBases(self):
+        # If this doesn't raise an AttributeError then help(mock) is broken
+        self.assertRaises(AttributeError, lambda: sentinel.__bases__)
+
+
+if __name__ == '__main__':
+    unittest2.main()