public void Approve_WhenBookingIsCancelled_StatusIsNotChanged() { //Arrange var booking = new Booking() { PricePerDay = 5, From = new DateTime(2018, 4, 4), To = new DateTime(2018, 4, 11), Status = BookingStatus.CANCELLEDBYHOST }; //Act booking.Approve(); //Assert Assert.IsTrue(booking.Status == BookingStatus.CANCELLEDBYHOST); }