path: root/tests/auto/qpropertyanimation/tst_qpropertyanimation.cpp

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#include <QtTest/QtTest>

#include <QtCore/qpropertyanimation.h>
#include <QtCore/qvariantanimation.h>
#include <QtGui/qwidget.h>

//TESTED_CLASS=QPropertyAnimation
//TESTED_FILES=

class UncontrolledAnimation : public QPropertyAnimation
{
    Q_OBJECT
public:
    int duration() const { return -1; /* not time driven */ }

protected:
    void updateCurrentTime(int msecs)
    {
        QPropertyAnimation::updateCurrentTime(msecs);
        if (msecs >= QPropertyAnimation::duration())
            stop();
    }
};

class MyObject : public QObject
{
    Q_OBJECT
    Q_PROPERTY(qreal x READ x WRITE setX) 
public:
    MyObject() : m_x(0) { }
    qreal x() const { return m_x; }
    void setX(qreal x) { m_x = x; }
private:
    qreal m_x;
};

class tst_QPropertyAnimation : public QObject
{
  Q_OBJECT
public:
    tst_QPropertyAnimation();
    virtual ~tst_QPropertyAnimation();

public Q_SLOTS:
    void init();
    void cleanup();

private slots:
    void construction();
    void setCurrentTime_data();
    void setCurrentTime();
    void statesAndSignals_data();
    void statesAndSignals();
    void deletion1();
    void deletion2();
    void deletion3();
    void duration0();
    void noStartValue();
    void noStartValueWithLoop();
    void startWhenAnotherIsRunning();
    void easingcurve_data();
    void easingcurve();
    void startWithoutStartValue();
    void playForwardBackward();
    void interpolated();
    void setStartEndValues_data();
    void setStartEndValues();
    void zeroDurationStart();
    void operationsInStates_data();
    void operationsInStates();
    void oneKeyValue();
    void updateOnSetKeyValues();
};

tst_QPropertyAnimation::tst_QPropertyAnimation()
{
}

tst_QPropertyAnimation::~tst_QPropertyAnimation()
{
}

void tst_QPropertyAnimation::init()
{
    qRegisterMetaType<QAbstractAnimation::State>("QAbstractAnimation::State");
    qRegisterMetaType<QAbstractAnimation::DeletionPolicy>("QAbstractAnimation::DeletionPolicy");
}

void tst_QPropertyAnimation::cleanup()
{
}

class AnimationObject : public QObject
{
    Q_OBJECT
    Q_PROPERTY(int value READ value WRITE setValue)
    Q_PROPERTY(qreal realValue READ realValue WRITE setRealValue)
public:
    AnimationObject(int startValue = 0)
        : v(startValue)
    { }

    int value() const { return v; }
    void setValue(int value) { v = value; }

    qreal realValue() const { return rv; }
    void setRealValue(qreal value) { rv = value; }

    int v;
    qreal rv;
};


void tst_QPropertyAnimation::construction()
{
    QPropertyAnimation panimation;
}

void tst_QPropertyAnimation::setCurrentTime_data()
{
    QTest::addColumn<int>("duration");
    QTest::addColumn<int>("loopCount");
    QTest::addColumn<int>("currentTime");
    QTest::addColumn<int>("testCurrentTime");
    QTest::addColumn<int>("testCurrentLoop");

    QTest::newRow("-1") << -1 << 1 << 0 << 0 << 0;
    QTest::newRow("0")  <<  0 << 1 << 0 << 0 << 0;
    QTest::newRow("1")  <<  0 << 1 << 1 << 0 << 0;
    QTest::newRow("2")  <<  0 << 2 << 1 << 0 << 0;
    QTest::newRow("3")  <<  1 << 1 << 0 << 0 << 0;
    QTest::newRow("4")  <<  1 << 1 << 1 << 1 << 0;
    QTest::newRow("5")  <<  1 << 2 << 1 << 0 << 1;
    QTest::newRow("6")  <<  1 << 2 << 2 << 1 << 1;
    QTest::newRow("7")  <<  1 << 2 << 3 << 1 << 1;
    QTest::newRow("8")  <<  1 << 3 << 2 << 0 << 2;
    QTest::newRow("9")  <<  1 << 3 << 3 << 1 << 2;
    QTest::newRow("a") <<  10 << 1 << 0 << 0 << 0;
    QTest::newRow("b") <<  10 << 1 << 1 << 1 << 0;
    QTest::newRow("c") <<  10 << 1 << 10 << 10 << 0;
    QTest::newRow("d") <<  10 << 2 << 10 << 0 << 1;
    QTest::newRow("e") <<  10 << 2 << 11 << 1 << 1;
    QTest::newRow("f") <<  10 << 2 << 20 << 10 << 1;
    QTest::newRow("g") <<  10 << 2 << 21 << 10 << 1;
    QTest::newRow("negloop 0") <<  10 << -1 << 0 << 0 << 0;
    QTest::newRow("negloop 1") <<  10 << -1 << 10 << 0 << 1;
    QTest::newRow("negloop 2") <<  10 << -1 << 15 << 5 << 1;
    QTest::newRow("negloop 3") <<  10 << -1 << 20 << 0 << 2;
    QTest::newRow("negloop 4") <<  10 << -1 << 30 << 0 << 3;
}

void tst_QPropertyAnimation::setCurrentTime()
{
    QFETCH(int, duration);
    QFETCH(int, loopCount);
    QFETCH(int, currentTime);
    QFETCH(int, testCurrentTime);
    QFETCH(int, testCurrentLoop);

    QPropertyAnimation animation;
    if (duration < 0)
        QTest::ignoreMessage(QtWarningMsg, "QVariantAnimation::setDuration: cannot set a negative duration");
    animation.setDuration(duration);
    animation.setLoopCount(loopCount);
    animation.setCurrentTime(currentTime);

    QCOMPARE(animation.currentTime(), testCurrentTime);
    QCOMPARE(animation.currentLoop(), testCurrentLoop);
}

void tst_QPropertyAnimation::statesAndSignals_data()
{
    QTest::addColumn<bool>("uncontrolled");
    QTest::newRow("normal animation") << false;
    QTest::newRow("animation with undefined duration")  <<  true;
}

void tst_QPropertyAnimation::statesAndSignals()
{
    QFETCH(bool, uncontrolled);
    QPropertyAnimation *anim = uncontrolled ? new UncontrolledAnimation : new QPropertyAnimation;
    anim->setDuration(100);

    QSignalSpy finishedSpy(anim, SIGNAL(finished()));
    QSignalSpy runningSpy(anim, SIGNAL(stateChanged(QAbstractAnimation::State, QAbstractAnimation::State)));
    QSignalSpy currentLoopSpy(anim, SIGNAL(currentLoopChanged(int)));

    anim->setCurrentTime(1);
    anim->setCurrentTime(100);
    QCOMPARE(finishedSpy.count(), 0);
    QCOMPARE(runningSpy.count(), 0);
    QCOMPARE(currentLoopSpy.count(), 0);
    QCOMPARE(anim->state(), QAnimationGroup::Stopped);

    anim->setLoopCount(3);
    anim->setCurrentTime(101);

    if (uncontrolled)
        QSKIP("Uncontrolled animations don't handle looping", SkipSingle);

    QCOMPARE(currentLoopSpy.count(), 1);
    QCOMPARE(anim->currentLoop(), 1);

    anim->setCurrentTime(0);
    QCOMPARE(currentLoopSpy.count(), 2);
    QCOMPARE(anim->currentLoop(), 0);

    anim->start();
    QCOMPARE(anim->state(), QAnimationGroup::Running);
    QCOMPARE(runningSpy.count(), 1); //anim must have started
    QCOMPARE(anim->currentLoop(), 0);
    runningSpy.clear();

    anim->stop();
    QCOMPARE(anim->state(), QAnimationGroup::Stopped);
    QCOMPARE(runningSpy.count(), 1); //anim must have stopped
    QCOMPARE(finishedSpy.count(), 0);
    QCOMPARE(anim->currentTime(), 0);
    QCOMPARE(anim->currentLoop(), 0);
    QCOMPARE(currentLoopSpy.count(), 2);
    runningSpy.clear();

    anim->start();
    QTest::qWait(1000);
    QCOMPARE(anim->state(), QAnimationGroup::Stopped);
    QCOMPARE(runningSpy.count(), 2); //started and stopped again
    runningSpy.clear();
    QCOMPARE(finishedSpy.count(), 1);
    QCOMPARE(anim->currentTime(), 100);
    QCOMPARE(anim->currentLoop(), 2);
    QCOMPARE(currentLoopSpy.count(), 4);

    anim->start(); // auto-rewinds
    QCOMPARE(anim->state(), QAnimationGroup::Running);
    QCOMPARE(anim->currentTime(), 0);
    QCOMPARE(anim->currentLoop(), 0);
    QCOMPARE(currentLoopSpy.count(), 5);
    QCOMPARE(runningSpy.count(), 1); // anim has started
    QCOMPARE(finishedSpy.count(), 1);
    QCOMPARE(anim->currentLoop(), 0);
    runningSpy.clear();

    QTest::qWait(1000);

    QCOMPARE(currentLoopSpy.count(), 7);
    QCOMPARE(anim->state(), QAnimationGroup::Stopped);
    QCOMPARE(anim->currentLoop(), 2);
    QCOMPARE(runningSpy.count(), 1); // anim has stopped
    QCOMPARE(finishedSpy.count(), 2);
    QCOMPARE(anim->currentTime(), 100);

    delete anim;
}

void tst_QPropertyAnimation::deletion1()
{
    QObject *object = new QWidget;
    QPointer<QPropertyAnimation> anim = new QPropertyAnimation(object, "minimumWidth");

    //test that the animation is deleted correctly depending of the deletion flag passed in start()
    QSignalSpy runningSpy(anim, SIGNAL(stateChanged(QAbstractAnimation::State, QAbstractAnimation::State)));
    QSignalSpy finishedSpy(anim, SIGNAL(finished()));
    anim->setStartValue(10);
    anim->setEndValue(20);
    anim->setDuration(200);
    anim->start();
    QCOMPARE(runningSpy.count(), 1);
    QCOMPARE(finishedSpy.count(), 0);

    QVERIFY(anim);
    QCOMPARE(anim->state(), QAnimationGroup::Running);
    QTest::qWait(100);
    QVERIFY(anim);
    QCOMPARE(anim->state(), QAnimationGroup::Running);
    QTest::qWait(150);
    QVERIFY(anim); //The animation should not have been deleted
    QCOMPARE(anim->state(), QAnimationGroup::Stopped);
    QCOMPARE(runningSpy.count(), 2);
    QCOMPARE(finishedSpy.count(), 1);

    anim->start(QVariantAnimation::DeleteWhenStopped);
    QVERIFY(anim);
    QCOMPARE(anim->state(), QAnimationGroup::Running);
    QTest::qWait(100);
    QVERIFY(anim);
    QCOMPARE(anim->state(), QAnimationGroup::Running);
    QTest::qWait(150);
    QVERIFY(!anim);  //The animation must have been deleted
    QCOMPARE(runningSpy.count(), 4);
    QCOMPARE(finishedSpy.count(), 2);
    delete object;
}

void tst_QPropertyAnimation::deletion2()
{
    //test that the animation get deleted if the object is deleted
    QObject *object = new QWidget;
    QPointer<QPropertyAnimation> anim = new QPropertyAnimation(object,"minimumWidth");
    anim->setStartValue(10);
    anim->setEndValue(20);
    anim->setDuration(200);

    QSignalSpy runningSpy(anim, SIGNAL(stateChanged(QAbstractAnimation::State, QAbstractAnimation::State)));
    QSignalSpy finishedSpy(anim, SIGNAL(finished()));

    anim->setStartValue(10);
    anim->setEndValue(20);
    anim->setDuration(200);
    anim->start();

    QTest::qWait(50);
    QVERIFY(anim);
    QCOMPARE(anim->state(), QAnimationGroup::Running);

    QCOMPARE(runningSpy.count(), 1);
    QCOMPARE(finishedSpy.count(), 0);

    //we can't call deletaLater directly because the delete would only happen in the next loop of _this_ event loop
    QTimer::singleShot(0, object, SLOT(deleteLater()));
    QTest::qWait(50);

    QVERIFY(anim->targetObject() == 0);
}

void tst_QPropertyAnimation::deletion3()
{
    //test that the stopped signal is emit when the animation is destroyed
    QObject *object = new QWidget;
    QPropertyAnimation *anim = new QPropertyAnimation(object,"minimumWidth");
    anim->setStartValue(10);
    anim->setEndValue(20);
    anim->setDuration(200);

    QSignalSpy runningSpy(anim, SIGNAL(stateChanged(QAbstractAnimation::State, QAbstractAnimation::State)));
    QSignalSpy finishedSpy(anim, SIGNAL(finished()));
    anim->start();

    QTest::qWait(50);
    QCOMPARE(anim->state(), QAnimationGroup::Running);
    QCOMPARE(runningSpy.count(), 1);
    QCOMPARE(finishedSpy.count(), 0);
    delete anim;
    QCOMPARE(runningSpy.count(), 2);
    QCOMPARE(finishedSpy.count(), 0);
}

void tst_QPropertyAnimation::duration0()
{
    QObject o;
    o.setProperty("ole", 42);
    QCOMPARE(o.property("ole").toInt(), 42);

    QPropertyAnimation animation(&o, "ole");
    animation.setEndValue(43);
    QVERIFY(!animation.currentValue().isValid());
    QCOMPARE(animation.currentValue().toInt(), 0);
    QCOMPARE(o.property("ole").toInt(), 42);
    animation.setDuration(0);
    animation.start();
    QCOMPARE(animation.state(), QAnimationGroup::Stopped);
    QCOMPARE(animation.currentTime(), 0);
    QCOMPARE(o.property("ole").toInt(), 43);
}

class StartValueTester : public QObject
{
    Q_OBJECT
    Q_PROPERTY(int ole READ ole WRITE setOle)
public:
    StartValueTester() : o(0) { }
    int ole() const { return o; }
    void setOle(int v) { o = v; values << v; }

    int o;
    QList<int> values;
};

void tst_QPropertyAnimation::noStartValue()
{
    StartValueTester o;
    o.setProperty("ole", 42);
    o.values.clear();

    QPropertyAnimation a(&o, "ole");
    a.setEndValue(420);
    a.setDuration(250);
    a.start();

    QTest::qWait(300);

    QCOMPARE(o.values.first(), 42);
    QCOMPARE(o.values.last(), 420);
}

void tst_QPropertyAnimation::noStartValueWithLoop()
{
    StartValueTester o;
    o.setProperty("ole", 42);
    o.values.clear();

    QPropertyAnimation a(&o, "ole");
    a.setEndValue(420);
    a.setDuration(250);
    a.setLoopCount(2);
    a.start();

    a.setCurrentTime(250);
    QCOMPARE(o.values.first(), 42);
    QCOMPARE(a.currentValue().toInt(), 42);
    QCOMPARE(o.values.last(), 42);

    a.setCurrentTime(500);
    QCOMPARE(a.currentValue().toInt(), 420);
}

void tst_QPropertyAnimation::startWhenAnotherIsRunning()
{
    StartValueTester o;
    o.setProperty("ole", 42);
    o.values.clear();

    {
        //normal case: the animation finishes and is deleted
        QPointer<QVariantAnimation> anim = new QPropertyAnimation(&o, "ole");
        QSignalSpy runningSpy(anim, SIGNAL(stateChanged(QAbstractAnimation::State, QAbstractAnimation::State)));
        anim->start(QVariantAnimation::DeleteWhenStopped);
        QTest::qWait(anim->duration() + 50);
        QCOMPARE(runningSpy.count(), 2); //started and then stopped
        QVERIFY(!anim);
    }

    {
        QPointer<QVariantAnimation> anim = new QPropertyAnimation(&o, "ole");
        QSignalSpy runningSpy(anim, SIGNAL(stateChanged(QAbstractAnimation::State, QAbstractAnimation::State)));
        anim->start(QVariantAnimation::DeleteWhenStopped);
        QTest::qWait(anim->duration()/2);
        QPointer<QVariantAnimation> anim2 = new QPropertyAnimation(&o, "ole");
        QCOMPARE(runningSpy.count(), 1);
        QCOMPARE(anim->state(), QVariantAnimation::Running);

        //anim2 will interrupt anim1
        QMetaObject::invokeMethod(anim2, "start", Qt::QueuedConnection, Q_ARG(QAbstractAnimation::DeletionPolicy, QVariantAnimation::DeleteWhenStopped));
        QTest::qWait(50);
        QVERIFY(!anim); //anim should have been deleted
        QVERIFY(anim2);
        QTest::qWait(anim2->duration());
        QVERIFY(!anim2); //anim2 is finished: it should have been deleted by now
        QVERIFY(!anim);
    }

}

// copy  from easing.cpp in case that function changes definition
static qreal easeInOutBack(qreal t)
{
    qreal s = 1.70158;
    qreal t_adj = 2.0f * (qreal)t;
    if (t_adj < 1) {
        s *= 1.525f;
        return 1.0/2*(t_adj*t_adj*((s+1)*t_adj - s));
    } else {
        t_adj -= 2;
        s *= 1.525f;
        return 1.0/2*(t_adj*t_adj*((s+1)*t_adj + s) + 2);
    }
}

void tst_QPropertyAnimation::easingcurve_data()
{
    QTest::addColumn<int>("currentTime");
    QTest::addColumn<int>("expectedvalue");

    QTest::newRow("interpolation1") << 0 << 0;
    QTest::newRow("interpolation2") << 1000 << 1000;
    QTest::newRow("extrapolationbelow") << 250 << -99;
    QTest::newRow("extrapolationabove") << 750 << 1099;
}

void tst_QPropertyAnimation::easingcurve()
{
    QFETCH(int, currentTime);
    QFETCH(int, expectedvalue);
    QObject o;
    o.setProperty("ole", 42);
    QCOMPARE(o.property("ole").toInt(), 42);

    QPropertyAnimation pAnimation(&o, "ole");
    pAnimation.setStartValue(0);
    pAnimation.setEndValue(1000);
    pAnimation.setDuration(1000);

    // this easingcurve assumes that we extrapolate before startValue and after endValue
    QEasingCurve easingCurve;
    easingCurve.setCustomType(easeInOutBack);
    pAnimation.setEasingCurve(easingCurve);
    pAnimation.start();
    pAnimation.pause();
    pAnimation.setCurrentTime(currentTime);
    QCOMPARE(o.property("ole").toInt(), expectedvalue);
}

void tst_QPropertyAnimation::startWithoutStartValue()
{
    QObject o;
    o.setProperty("ole", 42);
    QCOMPARE(o.property("ole").toInt(), 42);

    QPropertyAnimation anim(&o, "ole");
    anim.setEndValue(100);

    anim.start();

    QTest::qWait(100);
    int current = anim.currentValue().toInt();
    //it is somewhere in the animation
    QVERIFY(current > 42);
    QVERIFY(current < 100);

    QTest::qWait(200);
    QCOMPARE(anim.state(), QVariantAnimation::Stopped);

    anim.setEndValue(110);
    anim.start();
    current = anim.currentValue().toInt();
    // the default start value will reevaluate the current property
    // and set it to the end value of the last iteration
    QCOMPARE(current, 100);
    QTest::qWait(100);
    current = anim.currentValue().toInt();
    //it is somewhere in the animation
    QVERIFY(current >= 100);
    QVERIFY(current <= 110);
}

void tst_QPropertyAnimation::playForwardBackward()
{
    QObject o;
    o.setProperty("ole", 0);
    QCOMPARE(o.property("ole").toInt(), 0);

    QPropertyAnimation anim(&o, "ole");
    anim.setEndValue(100);
    anim.start();
    QTest::qWait(anim.duration() + 50);
    QCOMPARE(anim.state(), QAbstractAnimation::Stopped);
    QCOMPARE(anim.currentTime(), anim.duration());

    //the animation is at the end
    anim.setDirection(QVariantAnimation::Backward);
    anim.start();
    QCOMPARE(anim.state(), QAbstractAnimation::Running);
    QTest::qWait(anim.duration() + 50);
    QCOMPARE(anim.state(), QAbstractAnimation::Stopped);
    QCOMPARE(anim.currentTime(), 0);

    //the direction is backward
    //restarting should jump to the end
    anim.start();
    QCOMPARE(anim.state(), QAbstractAnimation::Running);
    QCOMPARE(anim.currentTime(), anim.duration());
    QTest::qWait(anim.duration() + 50);
    QCOMPARE(anim.state(), QAbstractAnimation::Stopped);
    QCOMPARE(anim.currentTime(), 0);
}

struct Number
{
    Number() {}
    Number(int n)
        : n(n) {}

    Number(const Number &other)
        : n(other.n){}

    Number &operator=(const Number &other) {
        n = other.n;
        return *this;
    }
    bool operator==(const Number &other) const {
        return n == other.n;
    }

    int n;
};

Q_DECLARE_METATYPE(Number)
Q_DECLARE_METATYPE(QAbstractAnimation::State)

QVariant numberInterpolator(const Number &f, const Number &t, qreal progress)
{
    return qVariantFromValue<Number>(Number(f.n + (t.n - f.n)*progress));
}

QVariant xaxisQPointInterpolator(const QPointF &f, const QPointF &t, qreal progress)
{
    return QPointF(f.x() + (t.x() - f.x())*progress, f.y());
}

void tst_QPropertyAnimation::interpolated()
{
    QObject o;
    o.setProperty("point", QPointF()); //this will avoid warnings
    o.setProperty("number", qVariantFromValue<Number>(Number(42)));
    QCOMPARE(qVariantValue<Number>(o.property("number")), Number(42));
    {
    qRegisterAnimationInterpolator<Number>(numberInterpolator);
    QPropertyAnimation anim(&o, "number");
    anim.setStartValue(qVariantFromValue<Number>(Number(0)));
    anim.setEndValue(qVariantFromValue<Number>(Number(100)));
    anim.setDuration(1000);
    anim.start();
    anim.pause();
    anim.setCurrentTime(100);
    Number t(qVariantValue<Number>(o.property("number")));
    QCOMPARE(t, Number(10));
    anim.setCurrentTime(500);
    QCOMPARE(qVariantValue<Number>(o.property("number")), Number(50));
    }
    {
    qRegisterAnimationInterpolator<QPointF>(xaxisQPointInterpolator);
    QPropertyAnimation anim(&o, "point");
    anim.setStartValue(QPointF(0,0));
    anim.setEndValue(QPointF(100, 100));
    anim.setDuration(1000);
    anim.start();
    anim.pause();
    anim.setCurrentTime(100);
    QCOMPARE(o.property("point"), QVariant(QPointF(10, 0)));
    anim.setCurrentTime(500);
    QCOMPARE(o.property("point"), QVariant(QPointF(50, 0)));
    }
    {
    // unregister it and see if we get back the default behaviour
    qRegisterAnimationInterpolator<QPointF>(0);
    QPropertyAnimation anim(&o, "point");
    anim.setStartValue(QPointF(0,0));
    anim.setEndValue(QPointF(100, 100));
    anim.setDuration(1000);
    anim.start();
    anim.pause();
    anim.setCurrentTime(100);
    QCOMPARE(o.property("point").toPointF(), QPointF(10, 10));
    anim.setCurrentTime(500);
    QCOMPARE(o.property("point").toPointF(), QPointF(50, 50));
    }

    {
    // Interpolate a qreal property with a int interpolator
    AnimationObject o1;
    o1.setRealValue(42.42);
    QPropertyAnimation anim(&o1, "realValue");
    anim.setStartValue(0);
    anim.setEndValue(100);
    anim.start();
    QCOMPARE(o1.realValue(), qreal(0));
    anim.setCurrentTime(250);
    QCOMPARE(o1.realValue(), qreal(100));
    }
}

Q_DECLARE_METATYPE(QVariant)

void tst_QPropertyAnimation::setStartEndValues_data()
{
    QTest::addColumn<QByteArray>("propertyName");
    QTest::addColumn<QVariant>("initialValue");
    QTest::addColumn<QVariant>("startValue");
    QTest::addColumn<QVariant>("endValue");

    QTest::newRow("dynamic property")  << QByteArray("ole") << QVariant(42) << QVariant(0) << QVariant(10);
    QTest::newRow("real property, with unmatching types") << QByteArray("x") << QVariant(42.) << QVariant(0) << QVariant(10.);
}

void tst_QPropertyAnimation::setStartEndValues()
{
    MyObject object;
    QFETCH(QByteArray, propertyName);
    QFETCH(QVariant, initialValue);
    QFETCH(QVariant, startValue);
    QFETCH(QVariant, endValue);

    //this tests the start value, end value and default start value
    object.setProperty(propertyName, initialValue);
    QPropertyAnimation anim(&object, propertyName);
    QVariantAnimation::KeyValues values;
    QCOMPARE(anim.keyValues(), values);

    //let's add a start value
    anim.setStartValue(startValue);
    values << QVariantAnimation::KeyValue(0, startValue);
    QCOMPARE(anim.keyValues(), values);

    anim.setEndValue(endValue);
    values << QVariantAnimation::KeyValue(1, endValue);
    QCOMPARE(anim.keyValues(), values);

    //now we can play with objects
    QCOMPARE(object.property(propertyName).toDouble(), initialValue.toDouble());
    anim.start();
    QVERIFY(anim.startValue().isValid());
    QCOMPARE(object.property(propertyName), anim.startValue());
    anim.setCurrentTime(anim.duration()/2);
    QCOMPARE(object.property(propertyName).toDouble(), (startValue.toDouble() + endValue.toDouble())/2 ); //just in the middle of the animation
    anim.setCurrentTime(anim.duration()); //we go to the end of the animation
    QCOMPARE(anim.state(), QAnimationGroup::Stopped); //it should have stopped
    QVERIFY(anim.endValue().isValid());
    QCOMPARE(object.property(propertyName), anim.endValue()); //end of the animations

    //now we remove the explicit start value and test the implicit one
    anim.stop();
    object.setProperty(propertyName, initialValue);

    //let's reset the start value
    values.remove(0);
    anim.setStartValue(QVariant());
    QCOMPARE(anim.keyValues(), values);
    QVERIFY(!anim.startValue().isValid());

    anim.start();
    QCOMPARE(object.property(propertyName), initialValue);
    anim.setCurrentTime(anim.duration()/2);
    QCOMPARE(object.property(propertyName).toDouble(), (initialValue.toDouble() + endValue.toDouble())/2 ); //just in the middle of the animation
    anim.setCurrentTime(anim.duration()); //we go to the end of the animation
    QCOMPARE(anim.state(), QAnimationGroup::Stopped); //it should have stopped
    QVERIFY(anim.endValue().isValid());
    QCOMPARE(object.property(propertyName), anim.endValue()); //end of the animations

    //now we set back the startValue
    anim.setStartValue(startValue);
    QVERIFY(anim.startValue().isValid());
    anim.start();
    QCOMPARE(object.property(propertyName), startValue);
}

void tst_QPropertyAnimation::zeroDurationStart()
{
    QPropertyAnimation anim;
    QSignalSpy spy(&anim, SIGNAL(stateChanged(QAbstractAnimation::State, QAbstractAnimation::State)));
    anim.setDuration(0);
    QCOMPARE(anim.state(), QAbstractAnimation::Stopped);
    anim.start();
    //the animation stops immediately
    QCOMPARE(anim.state(), QAbstractAnimation::Stopped);
    QCOMPARE(spy.count(), 2);

    //let's check the first state change
    const QVariantList firstChange = spy.first();
    //old state
    QCOMPARE(qVariantValue<QAbstractAnimation::State>(firstChange.first()), QAbstractAnimation::Stopped);
    //new state
    QCOMPARE(qVariantValue<QAbstractAnimation::State>(firstChange.last()), QAbstractAnimation::Running);

    //let's check the first state change
    const QVariantList secondChange = spy.last();
    //old state
    QCOMPARE(qVariantValue<QAbstractAnimation::State>(secondChange.first()), QAbstractAnimation::Running);
    //new state
    QCOMPARE(qVariantValue<QAbstractAnimation::State>(secondChange.last()), QAbstractAnimation::Stopped);
}

#define Pause 1
#define Start 2
#define Resume 3
#define Stop 4

void tst_QPropertyAnimation::operationsInStates_data()
{
    QTest::addColumn<QAbstractAnimation::State>("originState");
    QTest::addColumn<int>("operation");
    QTest::addColumn<QString>("expectedWarning");
    QTest::addColumn<QAbstractAnimation::State>("expectedState");

    QString pauseWarn(QLatin1String("QAbstractAnimation::pause: Cannot pause a stopped animation"));
    QString resumeWarn(QLatin1String("QAbstractAnimation::resume: Cannot resume an animation that is not paused"));

    QTest::newRow("S-pause")  << QAbstractAnimation::Stopped << Pause << pauseWarn << QAbstractAnimation::Stopped;
    QTest::newRow("S-start")  << QAbstractAnimation::Stopped << Start << QString() << QAbstractAnimation::Running;
    QTest::newRow("S-resume") << QAbstractAnimation::Stopped << Resume << resumeWarn << QAbstractAnimation::Stopped;
    QTest::newRow("S-stop")   << QAbstractAnimation::Stopped << Stop << QString() << QAbstractAnimation::Stopped;

    QTest::newRow("P-pause")  << QAbstractAnimation::Paused << Pause << QString() << QAbstractAnimation::Paused;
    QTest::newRow("P-start")  << QAbstractAnimation::Paused << Start << QString() << QAbstractAnimation::Running;
    QTest::newRow("P-resume") << QAbstractAnimation::Paused << Resume << QString() << QAbstractAnimation::Running;
    QTest::newRow("P-stop")   << QAbstractAnimation::Paused << Stop << QString() << QAbstractAnimation::Stopped;

    QTest::newRow("R-pause")  << QAbstractAnimation::Running << Pause << QString() << QAbstractAnimation::Paused;
    QTest::newRow("R-start")  << QAbstractAnimation::Running << Start << QString() << QAbstractAnimation::Running;
    QTest::newRow("R-resume") << QAbstractAnimation::Running << Resume << resumeWarn << QAbstractAnimation::Running;
    QTest::newRow("R-stop")   << QAbstractAnimation::Running << Stop << QString() << QAbstractAnimation::Stopped;
}

void tst_QPropertyAnimation::operationsInStates()
{
/**
 *           | pause()    |start()    |resume()   |stop()
 * ----------+------------+-----------+-----------+-------------------+
 * Stopped   | Stopped    |Running    |Stopped    |Stopped            |
 *          _| qWarning   |restart    |qWarning   |                   |
 * Paused    | Paused     |Running    |Running    |Stopped            |
 *          _|            |           |           |                   |
 * Running   | Paused     |Running    |Running    |Stopped            |
 *           |            |restart    |qWarning   |                   |
 * ----------+------------+-----------+-----------+-------------------+
**/

    QFETCH(QAbstractAnimation::State, originState);
    QFETCH(int, operation);
    QFETCH(QString, expectedWarning);
    QFETCH(QAbstractAnimation::State, expectedState);

    QObject o;
    o.setProperty("ole", 42);
    QPropertyAnimation anim(&o, "ole");
    QSignalSpy spy(&anim, SIGNAL(stateChanged(QAbstractAnimation::State, QAbstractAnimation::State)));

    anim.stop();
    switch (originState) {
    case QAbstractAnimation::Stopped:
    break;
    case QAbstractAnimation::Paused:
        anim.start();
        anim.pause();
    break;
    case QAbstractAnimation::Running:
        anim.start();
    break;
    }
    if (!expectedWarning.isEmpty()) {
        QTest::ignoreMessage(QtWarningMsg, qPrintable(expectedWarning));
    }
    QCOMPARE(anim.state(), originState);
    switch (operation) {
    case Pause:
        anim.pause();
    break;
    case Start:
        anim.start();
    break;
    case Resume:
        anim.resume();
    break;
    case Stop:
        anim.stop();
    break;
    }

    QCOMPARE(anim.state(), expectedState);
}
#undef Pause
#undef Start
#undef Resume
#undef Stop

void tst_QPropertyAnimation::oneKeyValue()
{
    QObject o;
    o.setProperty("ole", 42);
    QCOMPARE(o.property("ole").toInt(), 42);

    QPropertyAnimation animation(&o, "ole");
    animation.setStartValue(43);
    animation.setEndValue(44);
    animation.setDuration(100);

    animation.setCurrentTime(0);

    QVERIFY(animation.currentValue().isValid());
    QCOMPARE(animation.currentValue().toInt(), 43);
    QCOMPARE(o.property("ole").toInt(), 42);

    // remove the last key value
    animation.setKeyValueAt(1.0, QVariant());

    // we will neither interpolate, nor update the current value
    // since there is only one 1 key value defined
    animation.setCurrentTime(100);

    // the animation should not have been modified
    QVERIFY(animation.currentValue().isValid());
    QCOMPARE(animation.currentValue().toInt(), 43);
    QCOMPARE(o.property("ole").toInt(), 42);
}

void tst_QPropertyAnimation::updateOnSetKeyValues()
{
    QObject o;
    o.setProperty("ole", 100);
    QCOMPARE(o.property("ole").toInt(), 100);

    QPropertyAnimation animation(&o, "ole");
    animation.setStartValue(100);
    animation.setEndValue(200);
    animation.setDuration(100);

    animation.setCurrentTime(50);
    QCOMPARE(animation.currentValue().toInt(), 150);
    animation.setKeyValueAt(0.0, 300);
    QCOMPARE(animation.currentValue().toInt(), 250);

    o.setProperty("ole", 100);
    QPropertyAnimation animation2(&o, "ole");
    QVariantAnimation::KeyValues kValues;
    kValues << QVariantAnimation::KeyValue(0.0, 100) << QVariantAnimation::KeyValue(1.0, 200);
    animation2.setKeyValues(kValues);
    animation2.setDuration(100);
    animation2.setCurrentTime(50);
    QCOMPARE(animation2.currentValue().toInt(), 150);

    kValues.clear();
    kValues << QVariantAnimation::KeyValue(0.0, 300) << QVariantAnimation::KeyValue(1.0, 200);
    animation2.setKeyValues(kValues);

    QCOMPARE(animation2.currentValue().toInt(), animation.currentValue().toInt());
}

QTEST_MAIN(tst_QPropertyAnimation)
#include "tst_qpropertyanimation.moc"