function test() {

    var r="transaction_not_finished";

    var db = openDatabaseSync("QmlTestDB-changeversion", "", "Test database from Qt autotests", 1000000,

            function(db) {

                db.changeVersion("","1.0")

                db.transaction(function(tx){

                    tx.executeSql('CREATE TABLE Greeting(salutation TEXT, salutee TEXT)');

                })

            });

    db.transaction(function(tx){

        tx.executeSql('INSERT INTO Greeting VALUES ("Hello", "world")');

        tx.executeSql('INSERT INTO Greeting VALUES ("Goodbye", "cruel world")');

    });

    db = openDatabaseSync("QmlTestDB-changeversion", "", "Test database from Qt autotests", 1000000);

    if (db.version == "1.0")

        db.changeVersion("1.0","2.0",function(tx)

            {

                tx.executeSql('CREATE TABLE Utterance(type TEXT, phrase TEXT)')

                var rs = tx.executeSql('SELECT * FROM Greeting');

                for (var i=0; i<rs.rows.length; ++i) {

                    var type = "Greeting";

                    var phrase = rs.rows.item(i).salutation + ", " + rs.rows.item(i).salutee;

                    if (rs.rows.item(i).salutation == "Goodbye"

                     || rs.rows.item(i).salutation == "Farewell"

                     || rs.rows.item(i).salutation == "Good-bye") type = "Valediction";

                    var ins = tx.executeSql('INSERT INTO Utterance VALUES(?,?)',[type,phrase]);

                }

                tx.executeSql('DROP TABLE Greeting');

            });

    else

        return "db.version should be 1.0, but is " + db.version;

    var db = openDatabaseSync("QmlTestDB-changeversion", "2.0", "Test database from Qt autotests", 1000000);

    db.transaction(function(tx){

        var rs = tx.executeSql('SELECT * FROM Utterance');

        r = ""

        for (var i=0; i<rs.rows.length; ++i) {

            r += "(" + rs.rows.item(i).type + ": " + rs.rows.item(i).phrase + ")";

        }

        if (r == "(Greeting: Hello, world)(Valediction: Goodbye, cruel world)")

            r = "passed"

        else

            r = "WRONG DATA: " + r;

    })

    return r;

}