How do I return different values on different calls to a mock?

Question

I have the following code which is getting the current counter value from DB. Then it updates the counter in DB and then again it retrieves the value.

int curren         


        

Answer 1

Mockito supports changing the returned value; this support extends to PowerMockito. Just use OngoingStubbing.thenReturn(T value, T... values)

OngoingStubbing thenReturn(T value, T... values)

Sets consecutive return values to be returned when the method is called.
E.g:

when(mock.someMethod()).thenReturn(1, 2, 3);

Last return value in the sequence (in example: 3) determines the behavior of further consecutive calls.

So, in this case, you would do:

PowerMockito.when(DBUtil.getCurrentCount()).thenReturn(100, 150);

Note: this answer assumes you already know how to mock static methods. If you do not, see this question.