/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <qtest.h>
#include <QtTest/QtTest>
#include <private/qdeclarativepixmapcache_p.h>
#include <QtDeclarative/qdeclarativeengine.h>
#include <QtDeclarative/qdeclarativeimageprovider.h>
#include <QNetworkReply>
#include "testhttpserver.h"

#ifdef QT_CONCURRENT_LIB
#include <qtconcurrentrun.h>
#include <qfuture.h>
#endif

// These don't let normal people run tests!
//#include "../network-settings.h"

class tst_qdeclarativepixmapcache : public QObject
{
    Q_OBJECT
public:
    tst_qdeclarativepixmapcache() :
        thisfile(QUrl::fromLocalFile(__FILE__)),
        server(14452)
    {
        server.serveDirectory(SRCDIR "/data/http");
    }

private slots:
    void single();
    void single_data();
    void parallel();
    void parallel_data();
    void massive();
    void cancelcrash();
    void shrinkcache();
#ifdef QT_CONCURRENT_LIB
    void networkCrash();
#endif
private:
    QDeclarativeEngine engine;
    QUrl thisfile;
    TestHTTPServer server;
};


static int slotters=0;

class Slotter : public QObject
{
    Q_OBJECT
public:
    Slotter()
    {
        gotslot = false;
        slotters++;
    }
    bool gotslot;

public slots:
    void got()
    {
        gotslot = true;
        --slotters;
        if (slotters==0)
            QTestEventLoop::instance().exitLoop();
    }
};

#ifndef QT_NO_LOCALFILE_OPTIMIZED_QML
static const bool localfile_optimized = true;
#else
static const bool localfile_optimized = false;
#endif

void tst_qdeclarativepixmapcache::single_data()
{
    // Note, since QDeclarativePixmapCache is shared, tests affect each other!
    // so use different files fore all test functions.

    QTest::addColumn<QUrl>("target");
    QTest::addColumn<bool>("incache");
    QTest::addColumn<bool>("exists");
    QTest::addColumn<bool>("neterror");

    // File URLs are optimized
    QTest::newRow("local") << thisfile.resolved(QUrl("data/exists.png")) << localfile_optimized << true << false;
    QTest::newRow("local") << thisfile.resolved(QUrl("data/notexists.png")) << localfile_optimized << false << false;
    QTest::newRow("remote") << QUrl("http://127.0.0.1:14452/exists.png") << false << true << false;
    QTest::newRow("remote") << QUrl("http://127.0.0.1:14452/notexists.png") << false << false << true;
}

void tst_qdeclarativepixmapcache::single()
{
    QFETCH(QUrl, target);
    QFETCH(bool, incache);
    QFETCH(bool, exists);
    QFETCH(bool, neterror);

    QString expectedError;
    if (neterror) {
        expectedError = "Error downloading " + target.toString() + " - server replied: Not found";
    } else if (!exists) {
        expectedError = "Cannot open: " + target.toString();
    }

    QDeclarativePixmap pixmap;
    QVERIFY(pixmap.width() <= 0); // Check Qt assumption

    pixmap.load(&engine, target);

    if (incache) {
        QCOMPARE(pixmap.error(), expectedError);
        if (exists) {
            QVERIFY(pixmap.status() == QDeclarativePixmap::Ready);
            QVERIFY(pixmap.width() > 0);
        } else {
            QVERIFY(pixmap.status() == QDeclarativePixmap::Error);
            QVERIFY(pixmap.width() <= 0);
        }
    } else {
        QVERIFY(pixmap.width() <= 0);

        Slotter getter;
        pixmap.connectFinished(&getter, SLOT(got()));
        QTestEventLoop::instance().enterLoop(10);
        QVERIFY(!QTestEventLoop::instance().timeout());
        QVERIFY(getter.gotslot);
        if (exists) {
            QVERIFY(pixmap.status() == QDeclarativePixmap::Ready);
            QVERIFY(pixmap.width() > 0);
        } else {
            QVERIFY(pixmap.status() == QDeclarativePixmap::Error);
            QVERIFY(pixmap.width() <= 0);
        }
        QCOMPARE(pixmap.error(), expectedError);
    }
}

void tst_qdeclarativepixmapcache::parallel_data()
{
    // Note, since QDeclarativePixmapCache is shared, tests affect each other!
    // so use different files fore all test functions.

    QTest::addColumn<QUrl>("target1");
    QTest::addColumn<QUrl>("target2");
    QTest::addColumn<int>("incache");
    QTest::addColumn<int>("cancel"); // which one to cancel

    QTest::newRow("local")
            << thisfile.resolved(QUrl("data/exists1.png"))
            << thisfile.resolved(QUrl("data/exists2.png"))
            << (localfile_optimized ? 2 : 0)
            << -1;

    QTest::newRow("remote")
            << QUrl("http://127.0.0.1:14452/exists2.png")
            << QUrl("http://127.0.0.1:14452/exists3.png")
            << 0
            << -1;

    QTest::newRow("remoteagain")
            << QUrl("http://127.0.0.1:14452/exists2.png")
            << QUrl("http://127.0.0.1:14452/exists3.png")
            << 2
            << -1;

    QTest::newRow("remotecopy")
            << QUrl("http://127.0.0.1:14452/exists4.png")
            << QUrl("http://127.0.0.1:14452/exists4.png")
            << 0
            << -1;

    QTest::newRow("remotecopycancel")
            << QUrl("http://127.0.0.1:14452/exists5.png")
            << QUrl("http://127.0.0.1:14452/exists5.png")
            << 0
            << 0;
}

void tst_qdeclarativepixmapcache::parallel()
{
    QFETCH(QUrl, target1);
    QFETCH(QUrl, target2);
    QFETCH(int, incache);
    QFETCH(int, cancel);

    QList<QUrl> targets;
    targets << target1 << target2;

    QList<QDeclarativePixmap *> pixmaps;
    QList<bool> pending;
    QList<Slotter*> getters;

    for (int i=0; i<targets.count(); ++i) {
        QUrl target = targets.at(i);
        QDeclarativePixmap *pixmap = new QDeclarativePixmap;

        pixmap->load(&engine, target);

        QVERIFY(pixmap->status() != QDeclarativePixmap::Error);
        pixmaps.append(pixmap);
        if (pixmap->isReady()) {
            QVERIFY(pixmap->width() >  0);
            getters.append(0);
            pending.append(false);
        } else {
            QVERIFY(pixmap->width() <= 0);
            getters.append(new Slotter);
            pixmap->connectFinished(getters[i], SLOT(got()));
            pending.append(true);
        }
    }

    QCOMPARE(incache+slotters, targets.count());

    if (cancel >= 0) {
        pixmaps.at(cancel)->clear(getters[cancel]);
        slotters--;
    }

    if (slotters) {
        QTestEventLoop::instance().enterLoop(10);
        QVERIFY(!QTestEventLoop::instance().timeout());
    }

    for (int i=0; i<targets.count(); ++i) {
        QDeclarativePixmap *pixmap = pixmaps[i];

        if (i == cancel) {
            QVERIFY(!getters[i]->gotslot);
        } else {
            if (pending[i]) 
                QVERIFY(getters[i]->gotslot);

            QVERIFY(pixmap->isReady());
            QVERIFY(pixmap->width() > 0);
            delete getters[i];
        }
    }

    qDeleteAll(pixmaps);
}

void tst_qdeclarativepixmapcache::massive()
{
    QUrl url = thisfile.resolved(QUrl("data/massive.png"));

    // Confirm that massive images remain in the cache while they are
    // in use by the application.
    {
    qint64 cachekey = 0;
    QDeclarativePixmap p(0, url);
    QVERIFY(p.isReady());
    QVERIFY(p.pixmap().size() == QSize(10000, 1000));
    cachekey = p.pixmap().cacheKey();

    QDeclarativePixmap p2(0, url);
    QVERIFY(p2.isReady());
    QVERIFY(p2.pixmap().size() == QSize(10000, 1000));

    QVERIFY(p2.pixmap().cacheKey() == cachekey);
    }

    // Confirm that massive images are removed from the cache when
    // they become unused
    {
    qint64 cachekey = 0;
    {
        QDeclarativePixmap p(0, url);
        QVERIFY(p.isReady());
        QVERIFY(p.pixmap().size() == QSize(10000, 1000));
        cachekey = p.pixmap().cacheKey();
    }

    QDeclarativePixmap p2(0, url);
    QVERIFY(p2.isReady());
    QVERIFY(p2.pixmap().size() == QSize(10000, 1000));

    QVERIFY(p2.pixmap().cacheKey() != cachekey);
    }
}

// QTBUG-12729
void tst_qdeclarativepixmapcache::cancelcrash()
{
    QUrl url("http://127.0.0.1:14452/cancelcrash_notexist.png");
    for (int ii = 0; ii < 1000; ++ii) {
        QDeclarativePixmap pix(&engine, url);
    }
}

class MyPixmapProvider : public QDeclarativeImageProvider
{
public:
    MyPixmapProvider()
    : QDeclarativeImageProvider(Pixmap) {}

    virtual QPixmap requestPixmap(const QString &d, QSize *, const QSize &) {
        Q_UNUSED(d)
        QPixmap pix(800, 600);
        pix.fill(Qt::red);
        return pix;
    }
};

// QTBUG-13345
void tst_qdeclarativepixmapcache::shrinkcache()
{
    QDeclarativeEngine engine;
    engine.addImageProvider(QLatin1String("mypixmaps"), new MyPixmapProvider);

    for (int ii = 0; ii < 4000; ++ii) {
        QUrl url("image://mypixmaps/" + QString::number(ii));
        QDeclarativePixmap p(&engine, url);
    }
}

#ifdef QT_CONCURRENT_LIB

void createNetworkServer()
{
   QEventLoop eventLoop;
   TestHTTPServer server(14453);
   server.serveDirectory(SRCDIR "/data/http");
   QTimer::singleShot(100, &eventLoop, SLOT(quit()));
   eventLoop.exec();
}

// QT-3957
void tst_qdeclarativepixmapcache::networkCrash()
{
    QFuture<void> future = QtConcurrent::run(createNetworkServer);
    QDeclarativeEngine engine;
    for (int ii = 0; ii < 100 ; ++ii) {
        QDeclarativePixmap* pixmap = new QDeclarativePixmap;
        pixmap->load(&engine,  QUrl(QString("http://127.0.0.1:14453/exists.png")));
        QTest::qSleep(1);
        pixmap->clear();
        delete pixmap;
    }
    future.cancel();
}

#endif

QTEST_MAIN(tst_qdeclarativepixmapcache)

#include "tst_qdeclarativepixmapcache.moc"
