public void Strip() { 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 strippedTsVector = context .Blogs .Select(x => NpgsqlTextFunctions.Strip(NpgsqlTextFunctions.ToTsVector(x.Name))) .FirstOrDefault(); Assert.That( NpgsqlTsVector.Parse(strippedTsVector).ToString(), Is.EqualTo(NpgsqlTsVector.Parse("'cooki' 'piano'").ToString())); } }