Ruby Webdriver - WebSql test script

def webSqlTest(driver)
  driver.get("http://www.google.com")
  ret_val = driver.execute_script "
    var db = openDatabase('mydb', '1.0', 'Test DB', 2 * 1024 * 1024);
    var tempFunc = function(){
      db.transaction(function (tx) {
        tx.executeSql('CREATE TABLE IF NOT EXISTS LOGS (id unique, log)');
        tx.executeSql('INSERT INTO LOGS (id, log) VALUES (1, \"foobar\")');
        tx.executeSql('INSERT INTO LOGS (id, log) VALUES (2, \"logmsg\")');
        msg = '<p>Log message created and row inserted.</p>';
        console.log(msg);
      });
      db.transaction(function (tx) {
         tx.executeSql('SELECT * FROM LOGS', [], function (tx, results) {
         var len = results.rows.length, i;
         msg = '<p>Found rows: ' + len + '</p>';
         var temp = temp +  msg;
         document.getElementsByTagName(\"body\")[0].innerHTML = temp;
         console.log(temp);
         console.warn(temp);
       }, null);
      });
      return true;
    };
    tempFunc();
  "
  puts "Return value #{ret_val}"
  puts driver.title
  # puts driver.manage.logs.get("browser").inspect
  sleep 3
  driver.save_screenshot 'a.png'
  `rm a.png`
end