public void AddCategoryToLibrary()
        {
            var library = new LibraryDataService();

            try
            {
                library.CreateSession();
                library.BeginTransaction();
                library.dbConnection.Categories.Add(new AngularJSDataModels.Category()
                {
                    Name = "CSS"
                });
                library.CommitTransaction(true);
            }
            catch (Exception e)
            {
                throw;
            }
            finally
            {
                library.CloseSession();
            }
        }
        public void AddBookToLibrary()
        {
            var library = new LibraryDataService();

            try
            {
                library.CreateSession();
                library.BeginTransaction();
                library.dbConnection.Books.Add(new AngularJSDataModels.Book()
                {
                    CategoryId = 1,
                    Name       = "Book from Test",
                });
                library.CommitTransaction(true);
            }
            catch (Exception e)
            {
                throw;
            }
            finally
            {
                library.CloseSession();
            }
        }