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++ // Copyright (C) 2025 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #include <QTest>
++ #include <QQuickView>
++ #include <QQuickWindow>
++
++ #include <memory>
++
++ #include "../shared/util.h"
++
++ class tst_SourceItem : public QQuick3DDataTest
++ {
++ Q_OBJECT
++
++ private slots:
++ void initTestCase() override;
++ void sourceItem();
++ };
++
++ void tst_SourceItem::initTestCase()
++ {
++ QQuick3DDataTest::initTestCase();
++ if (!initialized())
++ return;
++ }
++
++ const int FUZZ = 5;
++
++ static bool isPlatformWayland()
++ {
++ return QGuiApplication::platformName().startsWith(QLatin1String("wayland"), Qt::CaseInsensitive);
++ }
++
++ void tst_SourceItem::sourceItem()
++ {
++ if (isPlatformWayland())
++ QSKIP("Wayland: eglSwapBuffers failure leads to no frame being presented."); // QTBUG-147818
++
++ std::unique_ptr<QQuickWindow> window(createWindow(QLatin1String("SourceItem.qml"), QSize(640, 480)));
++
++ QVERIFY(QTest::qWaitForWindowExposed(window.get()));
++
++ // Find the root item and reparent it to null, then back to the contentItem()
++ QQuickItem *rootItem = window->contentItem()->childItems().first();
++ rootItem->setParentItem(window->contentItem());
++
++ QImage result = grab(window.get());
++ if (result.isNull())
++ return; // was QFAIL'ed already
++
++ const qreal dpr = window->devicePixelRatio();
++
++ QVERIFY(comparePixel(result, 50, 50, dpr, Qt::black, FUZZ));
++
++ // The model is a rect with a red source item, so it should still be red
++ QVERIFY(comparePixelNormPos(result, 0.5, 0.5, QColor::fromRgb(255, 0, 0), FUZZ));
++
++ // Destroy window and set rootItem parent to null
++ rootItem->setParentItem(nullptr);
++
++ window->destroy();
++
++ // Create window again and set rootItem parent to contentItem
++ window->create();
++ rootItem->setParentItem(window->contentItem());
++ window->show();
++
++ QVERIFY(QTest::qWaitForWindowExposed(window.get()));
++
++ result = grab(window.get());
++ if (result.isNull())
++ return; // was QFAIL'ed already
++
++ rootItem->setParentItem(window->contentItem());
++ result = grab(window.get());
++ if (result.isNull())
++ return; // was QFAIL'ed already
++
++ QVERIFY(comparePixel(result, 50, 50, dpr, Qt::black, FUZZ));
++
++ // The model is a rect with a red source item, so it should still be red
++ QVERIFY(comparePixelNormPos(result, 0.5, 0.5, QColor::fromRgb(255, 0, 0), FUZZ));
++ }
++
++ QTEST_MAIN(tst_SourceItem)
++ #include "tst_sourceitem.moc"