public async Task BookingDetailsByID_Returns_A_BookingDetailsViewModel()
{
// Arrange
Booking booking = new Booking();
booking.BookingID = 1;
int testId = 1;
var mock = new Mock <IDelpinHttpClientHandler <Booking> >();
mock.Setup(m => m.CallHttpGetByID(It.IsAny <string>(), It.IsAny <string>()))
.ReturnsAsync(booking);
var sut = new BookingController(Configuration(), mock.Object);
// Act
var result = await sut.BookingDetailsByID(testId) as ViewResult;
// Assert
var model = Assert.IsType <BookingDetailsViewModel>(result.Model);
Assert.Equal(booking, model.BookingDetails);
Assert.Equal(booking.BookingID, model.BookingDetails.BookingID);
}