{ As this is the closest I found to the issue I had, it's the first result that comes up and I didn't find an appropriate answer, I'll post the solution here for any future poor souls: any() doesn't work where mocked class method uses a primitive parameter. after all the above failed this import was the one which worked. In my case i forgot to initialize my variables effectively THANK YOU !! I tried different version. But was 2 times. Content Discovery initiative April 13 update: Related questions using a Review our technical responses for the 2023 Developer Survey. https://github.com/mockito/mockito/wiki/FAQ, Junit 5 with InjectMocks. In my case a tested method called another method as a parameter: While repository is mocked, prefs.getUser().id) will throw NPE. The object is null though, so the unboxing fails accessing a null pointer. Not the answer you're looking for? Can anybody tell me what am I doing wrong? I think calling mock (YourClass.class) returns a mock which upon calling its methods throws a NPE. our application uses JUNIT5 , same issue occured. Thanks for contributing an answer to Stack Overflow! To learn more, see our tips on writing great answers. When this class that contains this mocking is run alone that the test is green in Eclipse and maven too. when(stockService.getProduct(productId)).thenReturn(Optional.of(product)); In most of the test classes @RunWith(MockitoJUnitRunner.class) works fine in injecting mocks. Not the answer you're looking for? 5. privacy statement. You will have to adapt to your environment/configuration. My tests work with Mockito 3.3.3, but fail with 3.6.0. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. How do you assert that a certain exception is thrown in JUnit tests? java - Null Pointer Exception JUnit Mockito - Stack Overflow As per Mockito you can create mock object by either using @Mock or Mockito.mock(Context.class); , I got NullpointerException because of using @RunWith(PowerMockRunner.class), instead of that I changed to @RunWith(MockitoJUnitRunner.class) it works fine. 566), Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. Can corresponding author withdraw a paper after it has accepted without permission/acceptance of first author. This seems so basic that I must be doing something . Dont forget to annotate your Testing class with @RunWith(MockitoJUnitRunner.class). This other SO question is more specifically about that, but you'd miss it when you don't know the issue is with value classes. He also rips off an arm to use as a sword. the object in when() must be a mock created by Mockito.mock(), it does not work for manually created real objects - not sure if that's your issue, since I'm not really getting where your problem is Added some code. The use case of @MockBean is integration test cases. This only happens in Android Espresso tests. Connect and share knowledge within a single location that is structured and easy to search. Check that the method signature is not declared as final. This might not be a viable solution for everyone, but hopefully knowing the root cause will help someone. Thanks for the help and suggestions! Did you manage to resolve this? It's not them. I'm also a big fan of mockito when using Java. Corner case: } For example: Or alternatively, you can specify a different default answer when creating a mock, to make methods return a new mock instead of null: RETURNS_DEEP_STUBS. Where might I find a copy of the 1983 RPG "Other Suns"? Your tests are making large assumptions that they have each object (non null) returned from the previous call. log.info(bad product id..); What would help is to perform a bisect of Mockito versions to figure out which specific PR is causing issues. In my case I was trying to mock a property which was annotated with @JvmField. Updated the example, even with this set, it is still returning null. Instead of mocking using static 'mock' method of Mockito library, it also provides a shorthand way of creating mocks using '@Mock . IMHO you need to add a @RunWith (some.mockito.TestSuiteIDontRememberName.class) annotated to the test class. It's not that Mockito guys didn't do a good job, this behavior is documented .
