con = this.pool.getConnection();
            ps = con.createStatement();
            // ps = con.prepareStatement("INSERT INTO users(login,password)VALUES(?,?)", );
            Assert.assertNotNull("could not create prepared statement", ps);
            // ps.setString(1, "benutzerasdfnameasdf");
            // ps.setString(2, "passwort");
            ps.executeUpdate("INSERT INTO users(login,password)VALUES('die henne','fick')",
                    Statement.RETURN_GENERATED_KEYS);
            rs = ps.getGeneratedKeys();
            Assert.assertNotNull("could not execure query", rs);
            int key;
            Assert.assertTrue("there wherent any generated keys..", rs.next());
            if(ps.getGeneratedKeys().next())
            {
                System.out.print(ps.getGeneratedKeys().getInt(1));
            }
            else
            {
                System.out.println("jo");
            }
            Assert.assertFalse(rs.next());