public void GetAllJobPostingsIdsTest() { var mockRepository = new Mock <IDeletableEntityRepository <Candidate> >(); mockRepository.Setup(x => x.All()).Returns(this.GetCandidatesData()); var service = new CandidatesService(mockRepository.Object); var check = service.GetAllJobPostingsIds("1"); var listOfJobPostings = new List <string> { "2" }; Assert.Equal(listOfJobPostings, check); }