public void GetAllBookReviewsForAllBooks()
{
// Arrange:
// Act:
var reviews = _reviewService.GetAllBookReviewsForAllBooks();
// Assert:
// Six books have been reviewed
Assert.IsTrue(reviews.Count() == 7);
Assert.IsTrue(reviews.Sum(i => i.Reviews.Count()) == 11);
Assert.AreEqual(reviews.First().BookId, 1);
Assert.AreEqual(reviews.First().BookTitle, "Moldvarpan sem vildi vita hver skeit a hausinn á henni");
Assert.AreEqual(reviews.First().Reviews.First().BookReviewId, 1);
}