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#include <QtCore/qabstractanimation.h>
#include <QtCore/qanimationgroup.h>
#include <QtTest>

class tst_QAbstractAnimation : public QObject
{
  Q_OBJECT
private slots:
    void construction();
    void destruction();
    void currentLoop();
    void currentLoopTime();
    void currentTime();
    void direction();
    void group();
    void loopCount();
    void state();
    void totalDuration();
    void avoidJumpAtStart();
    void avoidJumpAtStartWithStop();
    void avoidJumpAtStartWithRunning();
};

class TestableQAbstractAnimation : public QAbstractAnimation
{
    Q_OBJECT

public:
    TestableQAbstractAnimation() : m_duration(10) {}
    virtual ~TestableQAbstractAnimation() {};

    int duration() const { return m_duration; }
    virtual void updateCurrentTime(int) {}

    void setDuration(int duration) { m_duration = duration; }
private:
    int m_duration;
};

class DummyQAnimationGroup : public QAnimationGroup
{
    Q_OBJECT
public:
    int duration() const { return 10; }
    virtual void updateCurrentTime(int) {}
};

void tst_QAbstractAnimation::construction()
{
    TestableQAbstractAnimation anim;
}

void tst_QAbstractAnimation::destruction()
{
    TestableQAbstractAnimation *anim = new TestableQAbstractAnimation;
    delete anim;
}

void tst_QAbstractAnimation::currentLoop()
{
    TestableQAbstractAnimation anim;
    QCOMPARE(anim.currentLoop(), 0);
}

void tst_QAbstractAnimation::currentLoopTime()
{
    TestableQAbstractAnimation anim;
    QCOMPARE(anim.currentLoopTime(), 0);
}

void tst_QAbstractAnimation::currentTime()
{
    TestableQAbstractAnimation anim;
    QCOMPARE(anim.currentTime(), 0);
    anim.setCurrentTime(10);
    QCOMPARE(anim.currentTime(), 10);
}

void tst_QAbstractAnimation::direction()
{
    TestableQAbstractAnimation anim;
    QCOMPARE(anim.direction(), QAbstractAnimation::Forward);
    anim.setDirection(QAbstractAnimation::Backward);
    QCOMPARE(anim.direction(), QAbstractAnimation::Backward);
    anim.setDirection(QAbstractAnimation::Forward);
    QCOMPARE(anim.direction(), QAbstractAnimation::Forward);
}

void tst_QAbstractAnimation::group()
{
    TestableQAbstractAnimation *anim = new TestableQAbstractAnimation;
    DummyQAnimationGroup group;
    group.addAnimation(anim);
    QCOMPARE(anim->group(), &group);
}

void tst_QAbstractAnimation::loopCount()
{
    TestableQAbstractAnimation anim;
    QCOMPARE(anim.loopCount(), 1);
    anim.setLoopCount(10);
    QCOMPARE(anim.loopCount(), 10);
}

void tst_QAbstractAnimation::state()
{
    TestableQAbstractAnimation anim;
    QCOMPARE(anim.state(), QAbstractAnimation::Stopped);
}

void tst_QAbstractAnimation::totalDuration()
{
    TestableQAbstractAnimation anim;
    QCOMPARE(anim.duration(), 10);
    anim.setLoopCount(5);
    QCOMPARE(anim.totalDuration(), 50);
}

void tst_QAbstractAnimation::avoidJumpAtStart()
{
    TestableQAbstractAnimation anim;
    anim.setDuration(1000);

    /*
        the timer shouldn't actually start until we hit the event loop,
        so the sleep should have no effect
    */
    anim.start();
    QTest::qSleep(300);
    QCoreApplication::processEvents();
    QVERIFY(anim.currentTime() < 50);
}

void tst_QAbstractAnimation::avoidJumpAtStartWithStop()
{
    TestableQAbstractAnimation anim;
    anim.setDuration(1000);

    TestableQAbstractAnimation anim2;
    anim2.setDuration(1000);

    TestableQAbstractAnimation anim3;
    anim3.setDuration(1000);

    anim.start();
    QTest::qWait(300);
    anim.stop();

    /*
        same test as avoidJumpAtStart, but after there is a
        running animation that is stopped
    */
    anim2.start();
    QTest::qSleep(300);
    anim3.start();
    QCoreApplication::processEvents();
    QVERIFY(anim2.currentTime() < 50);
    QVERIFY(anim3.currentTime() < 50);
}

void tst_QAbstractAnimation::avoidJumpAtStartWithRunning()
{
    TestableQAbstractAnimation anim;
    anim.setDuration(2000);

    TestableQAbstractAnimation anim2;
    anim2.setDuration(1000);

    TestableQAbstractAnimation anim3;
    anim3.setDuration(1000);

    anim.start();
    QTest::qWait(300);  //make sure timer has started

    /*
        same test as avoidJumpAtStart, but with an
        existing running animation
    */
    anim2.start();
    QTest::qSleep(300); //force large delta for next tick
    anim3.start();
    QCoreApplication::processEvents();
    QVERIFY(anim2.currentTime() < 50);
    QVERIFY(anim3.currentTime() < 50);
}


QTEST_MAIN(tst_QAbstractAnimation)

#include "tst_qabstractanimation.moc"