public void GoogleBooksApi_IntegrationTests()
        {
            GoogleBooksClient client =
                new GoogleBooksClient(
                    "https://www.googleapis.com");

            //var result = api.Execute("books/v1/volumes/ItvZr-OV0DEC?key=AIzaSyDhHJkRg7Yv6Z4hpw0OGsuMUl_WIlWpj20", Method.GET);
            var googleBook = client.GetGoogleBookApiResult("books/v1/volumes/ItvZr-OV0DEC?key=AIzaSyDhHJkRg7Yv6Z4hpw0OGsuMUl_WIlWpj20", Method.GET);

            Assert.AreEqual("books#volume", googleBook.Kind);
            Assert.AreEqual("The Last Man", googleBook.VolumeInfo.Title);
            Assert.AreEqual("Simon and Schuster", googleBook.VolumeInfo.Publisher);
            Assert.AreEqual("9781439100530", googleBook.VolumeInfo.IndustryIdentifiers[1].Identifier);
            Assert.AreEqual("9781439100530", googleBook.VolumeInfo.Isbn13);
            Assert.AreEqual("1439100535", googleBook.VolumeInfo.Isbn10);
            Assert.AreEqual("https://www.googleapis.com/books/v1/volumes/ItvZr-OV0DEC", googleBook.selfLink);
            Assert.AreEqual(3.5, googleBook.VolumeInfo.averageRating);
            Assert.AreEqual("Fiction / Thrillers / General", googleBook.VolumeInfo.Categories[0]);
            Assert.AreEqual("Fiction / Thrillers / Political", googleBook.VolumeInfo.Categories[1]);
            Assert.AreEqual("Fiction / Thrillers / Suspense", googleBook.VolumeInfo.Categories[2]);
            Assert.AreEqual("Fiction / Political", googleBook.VolumeInfo.Categories[3]);
            Assert.AreEqual("Fiction / General", googleBook.VolumeInfo.Categories[4]);
        }
        private static List<Book> PersistGoogleBookFields(List<Book> books)
        {
            foreach (var book in books)
            {
                if (string.IsNullOrWhiteSpace(book.GoogleBookId) || !string.IsNullOrWhiteSpace(book.Description))
                    continue;

                GoogleBooksClient client = new GoogleBooksClient("https://www.googleapis.com");

                var googleBook = client.GetGoogleBookApiResult(string.Format("books/v1/volumes/{0}?key=AIzaSyDhHJkRg7Yv6Z4hpw0OGsuMUl_WIlWpj20", book.GoogleBookId), Method.GET);

                if (googleBook?.VolumeInfo == null)
                {
                    book.GoogleError = true;
                    continue;
                }

                book.Description = googleBook.VolumeInfo.Description;
                book.Publisher = googleBook.VolumeInfo.Publisher;
                book.Isbn10 = googleBook.VolumeInfo.Isbn10;
                book.Isbn13 = googleBook.VolumeInfo.Isbn13;
                book.GoogleBookLink = googleBook.selfLink;
                book.Categories = googleBook.VolumeInfo.Categories;
                book.CrowdRating = googleBook.VolumeInfo.averageRating;
                book.GoogleError = false;
            }

            return books;
        }