java.lang.IllegalStateException: incompatible return value type

java unit-testing jakarta-ee easymock
Dinesh picture Dinesh · Mar 11, 2011 · Viewed 18.3k times · Source

I am using EasyMock to create mock classes in test cases.

expect(entity.getType()).andReturn("string");

Type belongs to the String datatype. In my development environment it is working fine. But If I transfer to my server and take build, it is failing with following error:

java.lang.IllegalStateException: incompatible return value type

I don't know why it is failing in server and getting executed in my development machine.

Development EasyMock version: 2.5.2

Answer

Björn picture Björn · Aug 11, 2011

I just had the same problem.

I had a partial mock in EasyMock, but forgot to call addMockedMethod for the method I wanted to set the expectation for.

The error message was the same as above, I'd say that was somewhat misleading.

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