### Question:
DeleteFilterUsecase extends Usecase { public void setFilterId(Long filterId) { mFilterId = filterId; } @Inject protected  DeleteFilterUsecase(FilterRepository filterRepository, ThreadExecutor threadExecutor,
            PostExecutionThread postExecutionThread); void setFilterId(Long filterId);  }### Answer:
@Test(expected = RuntimeException.class) public void shouldThrowRuntimeException() { assertNotNull(mDeleteFilterUsecase); mDeleteFilterUsecase.setFilterId(null); mDeleteFilterUsecase.execute(null); }