BloomTests.Book.BookCollectionTests.InsertBook_NotPresent_InsertsInCorrectOrder C# (CSharp) Method

        public void InsertBook_NotPresent_InsertsInCorrectOrder()
        {
            var info1 = new BookInfo("book1", true);
            var info2 = new BookInfo("book2", true);
            var info3 = new BookInfo("book10", true);
            var info4 = new BookInfo("book20", true);
            var infoNew = new BookInfo("book11", true);
            var state = new List<BookInfo>(new[] {info1, info2, info3, info4});
            var collection = new BookCollection(state);
            collection.InsertBookInfo(infoNew);
            Assert.That(state[3], Is.EqualTo(infoNew), "book info should be inserted between book10 and book20");

            var infoLast = new BookInfo("book30", true);
            collection.InsertBookInfo(infoLast);
            Assert.That(state[5], Is.EqualTo(infoLast), "book info should be inserted at end");

            var infoFirst = new BookInfo("abc", true);
            collection.InsertBookInfo(infoFirst);
            Assert.That(state[0], Is.EqualTo(infoFirst), "book info should be inserted at start");
        }