public async Task AvailableBooksOnGet_WhenEntitiesExist_ReturnsViewResult()
{
//Arrange
TestDbSeeder.Initialize(_db);
TestDbSeeder.SeedBooks(_db);
TestDbSeeder.SeedRentals(_db);
//Act
var result = await _controller.AvailableBooks();
//Assert
var books = await _db.Books.Include(b => b.Rentals).ToListAsync();
Assert.NotNull(books);
Assert.Equal(TestDbSeeder.Books.Length, books.Count);
var rentals = await _db.Rentals.Include(r => r.Book).ToListAsync();
Assert.NotNull(rentals);
Assert.Equal(TestDbSeeder.Rentals.Length, books.Count);
var availableBooks = books.Where(b => b.Status == Status.Available).ToList();
Assert.NotNull(availableBooks);
Assert.Equal(2, availableBooks.Count);
var viewResult = Assert.IsType <ViewResult>(result);
var model = Assert.IsAssignableFrom <IEnumerable <BookViewModel> >(viewResult.Model);
Assert.Equal(availableBooks.Count, model.Count());
}
