How to mock a void static method to throw exception with Powermock?

Question

I am trying to use Powermock and Mockito to mock a void static method to throw exception as below. But I met a problem. Unless I make the two invocations of Adder.add() with

Answer 1

Did you forget to put PowerMock in replay mode?

How to Mock Static methods.

Per your link...

How to verify behavior Verification of a static method is done in two steps. First call PowerMockito.verifyStatic() to start verifying behavior and the call the static method you want to verify. E.g.

 PowerMockito.verifyStatic();
 Static.firstStaticMethod(param);

Important: You need to call verifyStatic() per method verification.