qt-everywhere-src-5.15.1/qtdeclarative/tests/auto/quicktest/polish/tst_polish.cpp

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#include <QtTest/qtest.h>
#include <QtQml/qqmlengine.h>
#include <QtQml/qqmlcontext.h>
#include <QtQuick/qquickitem.h>
#include <QQuickView>
#include <QtQuickTest/quicktest.h>

#include "../../shared/util.h"

class CustomItem : public QQuickItem
{
    Q_OBJECT

public:
    CustomItem() {}

    void updatePolish() override
    {
        updatePolishCalled = true;
    }

    bool updatePolishCalled = false;
};

class tst_Polish : public QQmlDataTest
{
    Q_OBJECT

public:
    tst_Polish();

private slots:
    void testPolish();
};

tst_Polish::tst_Polish()
{
    qmlRegisterType<CustomItem>("Test", 1, 0, "CustomItem");
}

void tst_Polish::testPolish()
{
    QQuickView view;
    view.setSource(testFileUrl("polish.qml"));
    view.show();
    QVERIFY(QTest::qWaitForWindowExposed(&view));

    CustomItem *item = qobject_cast<CustomItem*>(view.rootObject());
    QVERIFY(item);

    item->polish();
    QVERIFY(QQuickTest::qIsPolishScheduled(item));
    QVERIFY(!item->updatePolishCalled);
    QVERIFY(QQuickTest::qWaitForItemPolished(item));
    QVERIFY(item->updatePolishCalled);
}

QTEST_MAIN(tst_Polish)

#include "tst_polish.moc"