def testReturnDefaults(self): #{{{
     '''Return default name/value mapping only'''
     def _(a, b, c=1, d=2, e=3): #{{{
         pass
     # End def #}}}
     ret = cargval(_)
     self.assertTrue(ret)
     self.assertTrue(isinstance(ret, dict))
     self.assertEqual(ret, {'c': 1, 'd': 2, 'e': 3})
 def testNonCallable(self): #{{{
     '''Non-callable returns None'''
     self.assertTrue(cargval(1) is None)