public void BookingController_Post_Book_Should_Create_A_Booking() { //Arange var bookingEventId = 1; var userId = 1; _repository.Setup(x => x.Find(It.IsAny <Expression <Func <BookingEvent, bool> > >())) .Returns(new BookingEvent { Id = bookingEventId, ApplicationType = ApplicationType.Web, }); _repository.Setup(x => x.Find(It.IsAny <Expression <Func <User, bool> > >())) .Returns(new User { Id = userId, Name = "jonh" }); var sut = new BookingController(_logger.Object, _bookingService.Object, _repository.Object); var booking = new BookingViewModel { BookingEventId = bookingEventId, UserId = userId }; //Act var result = sut.Book(booking); var status = result as OkResult; //Assert Assert.IsNotNull(status); Assert.AreEqual(200, status.StatusCode); }