Index: unittest.py
===================================================================
--- unittest.py	(revision 60221)
+++ unittest.py	(working copy)
@@ -457,11 +457,12 @@
 
     def loadTestsFromModule(self, module):
         """Return a suite of all tests cases contained in the given module"""
+	import unittest
         tests = []
         for name in dir(module):
             obj = getattr(module, name)
             if (isinstance(obj, (type, types.ClassType)) and
-                issubclass(obj, TestCase)):
+                issubclass(obj, unittest.TestCase)):
                 tests.append(self.loadTestsFromTestCase(obj))
         return self.suiteClass(tests)