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Niek Haarman edited this page Aug 19, 2016 · 16 revisions

General FAQs


General

Q: Will this library help mocking closed (non-open) classes?

A: Mockito-Kotlin does not really add any extra functionality to Mockito. As such, you will still get exceptions when trying to mock closed classes. If possible, try to use interfaces instead.

Q: Will this library help overcoming NullPointerExceptions with `Mockito.any()`?

A: Passing `Mockito.any()` to a non-nullable parameter in Kotlin fails with a NullPointerException. Mockito-Kotlin tries to overcome this. See Null-safety for more info.

Q: I get an error ‘Could not create an instance of class’. What should I do?

A: Register an instance creator, as described in Null-safety.

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