public async Task BookingsByCustomerID_Returns_A_BookingViewModel() { // Arrange var returnedValues = new List <Booking>() { new Booking() { BookingID = 1 }, new Booking() { BookingID = 1 } }; int testId = 1; var mock = new Mock <IDelpinHttpClientHandler <Booking> >(); mock.Setup(m => m.CallHttpGet(It.IsAny <string>(), It.IsAny <string>())) .ReturnsAsync(returnedValues); var sut = new BookingController(Configuration(), mock.Object); // Act var result = await sut.BookingsByCustomerID(testId) as ViewResult; // Assert var model = Assert.IsType <BookingViewModel>(result.Model); int bookingId = model.bookings.Select(c => c.BookingID).FirstOrDefault(); Assert.Equal(returnedValues, model.bookings); Assert.Equal(returnedValues.Count, model.bookings.Count); Assert.Equal(1, bookingId); }