118             class A(Singleton):   class
120                     super(A, self).__init__()
122             a1 = A.getInstance()
123             a2 = A.getInstance()
165             class A(Singleton):   class
167                     super(A, self).__init__()
169             self.assertRaises(SingletonException, A)
174                 class A(Singleton):   class
176                         super(A, self).__init__()
196             class A(Singleton):   class
198                     super(A, self).__init__()
199             class B(A): 
205             a = A.getInstance()
207             A._forgetClassInstanceReferenceForTesting()
213             a = A.getInstance()