Mockito when do nothing

The name of the project is java-junitmockito-donothing. A simple dao class that does some database activities but here I am doing nothing for this example. Create Junit class to test our service class.

We are using doNothing method on void method only because void method does not return anything. I am using ExtendWith Using Junit 5 how it is easy to use Mockito framework. Skip to content. Star 2. New issue. Jump to bottom. Linked pull requests. Copy link. Mocking Unit method where the first call should doNothing and then 2nd doThrow , produces the following error: Only void methods can doNothing! So how do we go about it? Let us together figure this out in the following blog using mockito.

Mockito is one of the most famous mocking framework used for writing unit tests. If you are new to mocking you can know more at mockito website. In this method we call another void method. Now, when you want to write test case for this method, how can we test that the void method was called? Also, if the correct parameters were passed to void method?

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