I’m trying to use Mockito for testing and stumbled upon the doCallRealMethod function. I’m not entirely sure how to implement it correctly. I’m working on a Java project involving unit tests where certain mock methods need to behave as the real implementation. Could someone explain with an example or point out common pitfalls?
Hey! I’ve used doCallRealMethod in my projects and it’s quite handy. This method is great when you want the real method behavior for a particular call but still keep other instances mocked. Just make sure you configure it like this: Mockito.doCallRealMethod().when(yourMock).yourMethod(). It’s perfect for testing real logic in abstract classes while ensuring that you don’t accidentally invoke the real method multiple times in your test suite.
In my work, I’ve encountered situations where doCallRealMethod saved me some headaches. When working with abstract classes, you often need to strike a balance between mocking logic and testing actual implementations. Remember to carefully scope your calls using Mockito’s when method. Ensure all dependencies are fully mocked to prevent unexpected behavior. Here’s a snippet: Mockito.doCallRealMethod().when(someMock).desiredMethod();. Secure your test environment to avoid side effects.
From experience, using doCallRealMethod can be tricky if not done correctly. Double-check that you genuinely need the real method call—it’s typically used with partial mocks. A practical tip is to only use this method when absolutely necessary, like testing side effects within a method that’s abstract or partially mocked. For instance, Mockito.doCallRealMethod().when(mockObject).methodToTest(); should be used carefully, ensuring that your test doesn’t unintentionally call the method in an uncontrolled way.