[FIXED] How to mock hierarchy getters using when...then

Issue

I want to mock a line of code which is

List<FGUBeskaeftigelsesStatus> beskaeftigelseStatus = forloeb.getUng().getFguBeskaeftigelseStatus().stream().filter(fguBeskaeftigelsePredicate).collect(Collectors.toList());

I tried using mocks

but its throwing null pointer in Mockito. How can I mock this line so that my list is not empty and returns what I pass through thenReturn. Do I need to set mockForloeb/mockungs seperately again if i m mocking them already

Solution

You need to mock each part in the chain.

Ung mockedUng = Mockito.mock(Ung.class);
when(mockedUng.getFguBeskaeftigelseStatus()).thenReturn(fGUBeskaeftigelsesStatusList);
when(mockforloeb.getUng()).thenReturn(mockedUng);

Answered By - Pavel Polivka