public async void AddBookRoute_Test()
{
// Arrange
var newBook = CreateBook();
SetupMockBookRepo(newBook);
var bookController = new BookController(_bookRepository.Object, _genreRepository.Object, _mapper);
// Act
var result = await bookController.AddUpdateBookAsync(newBook);
var okResult = result as OkResult;
// Assert
Assert.True(okResult != null);
Assert.Equal(200, okResult.StatusCode);
}