public void AddStopToTripTestEndDateField() { // Arrange var user = new User(); var repo = new FakeTripRepository(); Trip trip = new Trip() { TripName = "Trip Test 1", TripStartDate = DateTime.Parse("01 / 01 / 1990"), TripEndDate = DateTime.Parse("01 / 02 / 1990"), TripDestination = "Canada" }; TripStop stop = new TripStop() { StopName = "Stop 1", StopBegin = DateTime.Parse("01 / 01 / 1990"), StopEnd = DateTime.Parse("01 / 02 / 1990") }; //Act repo.AddStopToTrip(trip, stop); //Assert Assert.Equal(DateTime.Parse("01 / 02 / 1990"), trip.TripStops[0].StopEnd); }