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++ // Copyright (C) 2021 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #include <QTest>
++ #include <QSignalSpy>
++ #include <QScopedPointer>
++
++ #include <QtQuick3DParticles/private/qquick3dparticletrailemitter_p.h>
++
++
++ class tst_QQuick3DParticleTrailEmitter : public QObject
++ {
++ Q_OBJECT
++
++ private slots:
++ void testInitialization();
++ };
++
++ void tst_QQuick3DParticleTrailEmitter::testInitialization()
++ {
++ QQuick3DParticleTrailEmitter *emitter = new QQuick3DParticleTrailEmitter();
++
++ QCOMPARE(emitter->follow(), nullptr);
++
++ QQuick3DParticleModelParticle *particle = new QQuick3DParticleModelParticle();
++ emitter->setFollow(particle);
++ QCOMPARE(emitter->follow(), particle);
++
++ delete particle;
++ delete emitter;
++ }
++
++ QTEST_APPLESS_MAIN(tst_QQuick3DParticleTrailEmitter)
++ #include "tst_qquick3dparticletrailemitter.moc"