public void ShouldGetProperCandidatesCount() { //Given IDataRepository repository = _ioc.Resolve <IDataRepository>(); repository.Add(new CandidatesModel() { Id = 1, Name = "Adam Kowalski" }); repository.Add(new CandidatesModel() { Id = 2, Name = "Jan Nowak" }); repository.Add(new CandidatesModel() { Id = 3, Name = "Trzeci Kandydat" }); var expectedCandidatesCount = 3; //When var candidates = _votingService.GetCandidates().ToArray(); //Then Assert.AreEqual(expectedCandidatesCount, candidates.Length); }