How to unmock an exception using Mockito?

Question

I am trying to mock a function for various results. First, I mocked it for throwing an exception as follows:

Mockito.when(ClassName.methodName(Matchers.any(), Matchers.any())).thenThrow(new ExceptionName());

Now, I want to mock for a case when it return some output. So, I am trying as follows:

    Mockito.when(ClassName.methodName(Matchers.any(), Matchers.any())).thenReturn(output);

But it is throwing exception(Maybe because I have already mocked it to throw exception)

How should I unmock it, so that I can use it to give proper output?

score 3 · Answer 1 · edited Dec 08 '22 at 09:38

3

You can use Mockito.reset() to clear any mocking setup you have done on a particular mock (for example Mockito.reset(someMock)).

NOTE: It is usually better to make your tests smaller so you don't need to use reset. If you are using @MockBean, the mocks are reset after each test method by default. This default behaviour can be changed via the reset parameter on the annotation.

edited Dec 08 '22 at 09:38

BugsOverflow

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answered Jun 25 '21 at 06:49

Wim Deblauwe

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Is there any other way in which we can reset only for a particular functions? Because I have mocked for other functions as well and this method might reset the mocks for the other methods as well. – Gaurav Jha Jun 25 '21 at 08:10
Are you manually creating the mock instances? Or are you using the `@Mock` annotation? Or are you using `@MockBean` annotation? – Wim Deblauwe Jun 25 '21 at 12:57
I am using @MockBean annotation for creating the instances – Gaurav Jha Jun 26 '21 at 13:25
`Mockito.reset()` fixed the issue ! thanks – Jad Chahine Dec 02 '22 at 23:13

Georgii Lvov · Accepted Answer · 2021-06-25T13:23:49.347

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You can define behavior of mock for multiple calls as follows:

when(ClassName.methodName(any(),any()))
                .thenThrow(RuntimeException.class)
                .thenReturn(output)
                .thenCallRealMethod();

When your mock is called in service for the first time it will be thrown RuntimeException, for the second will be returned output, for the third will be called a real method.

edited Jun 25 '21 at 13:23

answered Jun 25 '21 at 13:16

Georgii Lvov

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score 0 · Answer 3 · answered Jun 25 '21 at 10:56

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You can create a nested class using @Nested and move all your exception methods into it and create a separate setup for those functions only. This structure will help you segregate all the similar methods

answered Jun 25 '21 at 10:56

D_J

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How to unmock an exception using Mockito?

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