Writing Mockito based junit test cases

[ParthaNath28]

Hello

I has hoping to use mock test cases in my service layer just the way jpaRepository test cases are written.

@test
@DisplayName("Get all list")
public void testMyService() throws Exception {
when(jpaStreamer.stream(MyEntity.class)
.skip(20)
.limit(20)
.sorted((MyEntity.class)$.identifier)
.toList()).thenReturn(myEntityList);

The error message I got is like below. Just wondering if there is a documentation available for using in Mock based test cases

org.mockito.exceptions.misusing.WrongTypeOfReturnValue:
ArrayList cannot be returned by stream()
stream() should return Stream

---

[minborg]

I am not an expert on mocking but I suspect that you only can have one layer of calls in the when() clause. So try and move the statements to the thenReturn() instead.