public void HasValidLearningAimWithNulEndDatesMeetsExpectation(string candidate, string previousYearEnd, bool expectation, params string[] startDates) { // arrange const string learnAimRef = "salddfkjeifdnase"; var testDate = DateTime.Parse(candidate); var mockDelivery = new Mock <ILearningDelivery>(); mockDelivery .SetupGet(y => y.LearnAimRef) .Returns(learnAimRef); mockDelivery .SetupGet(y => y.LearnStartDate) .Returns(testDate); var handler = new Mock <IValidationErrorHandler>(MockBehavior.Strict); var category = "larsCat"; var larsValidities = Collection.Empty <ILARSLearningDeliveryValidity>(); startDates.ForEach(sd => { var mockValidity = new Mock <ILARSLearningDeliveryValidity>(); mockValidity .SetupGet(x => x.ValidityCategory) .Returns(category); mockValidity .SetupGet(x => x.StartDate) .Returns(DateTime.Parse(sd)); larsValidities.Add(mockValidity.Object); }); var provider = new Mock <IProvideLearnAimRefRuleActions>(MockBehavior.Strict); var service = new Mock <ILARSDataService>(MockBehavior.Strict); service .Setup(x => x.GetValiditiesFor(learnAimRef)) .Returns(larsValidities.AsSafeReadOnlyList()); var yearData = new Mock <IAcademicYearDataService>(MockBehavior.Strict); yearData .Setup(x => x.GetAcademicYearOfLearningDate(testDate, AcademicYearDates.PreviousYearEnd)) .Returns(DateTime.Parse(previousYearEnd)); var sut = new LearnAimRef_89Rule(handler.Object, provider.Object, service.Object, yearData.Object); // act var result = sut.HasValidLearningAim(mockDelivery.Object, category); // assert handler.VerifyAll(); provider.VerifyAll(); service.VerifyAll(); yearData.VerifyAll(); Assert.Equal(expectation, result); }