void tst_QScriptString::test()
{
    QScriptEngine eng;
    {
        QScriptString str;
        QVERIFY(!str.isValid());
        QVERIFY(str == str);
        QVERIFY(!(str != str));
        QVERIFY(str.toString().isNull());

        QScriptString str1(str);
        QVERIFY(!str1.isValid());

        QScriptString str2 = str;
        QVERIFY(!str2.isValid());

        QCOMPARE(str.toArrayIndex(), quint32(0xffffffff));
    }
    for (int x = 0; x < 2; ++x) {
        QString ciao = QString::fromLatin1("ciao");
        QScriptString str = eng.toStringHandle(ciao);
        QVERIFY(str.isValid());
        QVERIFY(str == str);
        QVERIFY(!(str != str));
        QCOMPARE(str.toString(), ciao);

        QScriptString str1(str);
        QCOMPARE(str, str1);

        QScriptString str2 = str;
        QCOMPARE(str, str2);

        QScriptString str3 = eng.toStringHandle(ciao);
        QVERIFY(str3.isValid());
        QCOMPARE(str, str3);

        eng.collectGarbage();

        QVERIFY(str.isValid());
        QCOMPARE(str.toString(), ciao);
        QVERIFY(str1.isValid());
        QCOMPARE(str1.toString(), ciao);
        QVERIFY(str2.isValid());
        QCOMPARE(str2.toString(), ciao);
        QVERIFY(str3.isValid());
        QCOMPARE(str3.toString(), ciao);
    }
    {
        QScriptEngine* eng2 = new QScriptEngine;
        QString one = QString::fromLatin1("one");
        QString two = QString::fromLatin1("two");
        QScriptString oneInterned = eng2->toStringHandle(one);
        QCOMPARE(oneInterned.toString(), one);
        QScriptString twoInterned = eng2->toStringHandle(two);
        QCOMPARE(twoInterned.toString(), two);
        QVERIFY(oneInterned != twoInterned);
        QVERIFY(!(oneInterned == twoInterned));

        delete eng2;
    }
}