Mockito issue - when(java.lang.Void) in Stubber cannot be applied to void

Question

I can't figure out why the doNothing isn't working for this? Any ideas?

@Captor ArgumentCaptor<GenericClass<someOtherClass>> captor; ... Mockito.doNothing().when(mockObject.methodToStub(captor.capture())); 

The error is:

Exception: when(java.lang.Void) in Stubber cannot be applied to void

Answer 1

This stub is wrong :

doNothing().when(mockObject.methodToStub(captor.capture())); // wrong 

methodToStub(...) must be outside the when if using this API style (it should only contain the mock) :

doNothing().when(mockObject).methodToStub(captor.capture()); // correct 

Tho remarks however :

1. doNothing is the default for void methods for a mock.
2. You can use the BDDMockito aliases that enables your code to be real à la Behavior Driven Development