public void Length() { using (var context = new BloggingContext(ConnectionString)) { context.Database.Log = Console.Out.WriteLine; var blog = new Blog { Name = "cooky cookie cookies piano pianos" }; context.Blogs.Add(blog); context.SaveChanges(); var lexemeCount = context .Blogs .Select(x => NpgsqlTextFunctions.Length(NpgsqlTextFunctions.ToTsVector(x.Name))) .FirstOrDefault(); Assert.That(lexemeCount, Is.EqualTo(2)); } }