// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#include <QtTest/QtTest>
#include "../shared/particlestestsshared.h"
#include <private/qquickparticlesystem_p.h>
#include <private/qabstractanimation_p.h>
#include <QtQuickTestUtils/private/qmlutils_p.h>

class tst_qquickparticlegroup : public QQmlDataTest
{
    Q_OBJECT
public:
    tst_qquickparticlegroup() : QQmlDataTest(QT_QMLTEST_DATADIR) {}

private slots:
    void initTestCase() override;
    void test_instantTransition();
};

void tst_qquickparticlegroup::initTestCase()
{
    QQmlDataTest::initTestCase();
    QUnifiedTimer::instance()->setConsistentTiming(true);
}

void tst_qquickparticlegroup::test_instantTransition()
{
    QQuickView* view = createView(testFileUrl("basic.qml"), 600);
    QQuickParticleSystem* system = view->rootObject()->findChild<QQuickParticleSystem*>("system");
    ensureAnimTime(600, system->m_animation);

    //A frame or two worth of particles will be missed, the transition doesn't take effect on the frame it's spawned (QTBUG-21781)
    QVERIFY(system->groupData[0]->size() <= 500 && system->groupData[0]->size() >= 450);
    for (QQuickParticleData *d : std::as_const(system->groupData[0]->data)) {
        if (d->t == -1)
            continue; //Particle data unused

        QCOMPARE(d->x, 0.f);
        QCOMPARE(d->y, 0.f);
        QCOMPARE(d->vx, 0.f);
        QCOMPARE(d->vy, 0.f);
        QCOMPARE(d->ax, 0.f);
        QCOMPARE(d->ay, 0.f);
        QCOMPARE(d->lifeSpan, 0.5f);
        QCOMPARE(d->size, 32.f);
        QCOMPARE(d->endSize, 32.f);
        QVERIFY(myFuzzyLEQ(d->t, ((qreal)system->timeInt/1000.0)));
    }
    delete view;
}

QTEST_MAIN(tst_qquickparticlegroup);

#include "tst_qquickparticlegroup.moc"