public void CheckIfCandidateAlreadyAppliedTest() { var mockRepository = new Mock <IDeletableEntityRepository <Candidate> >(); mockRepository.Setup(x => x.All()).Returns(this.GetCandidatesData()); var service = new CandidatesService(mockRepository.Object); var check = service.CheckIfCandidateAlreadyApplied("1", "2"); Assert.True(check); }