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#include <qtest.h>

#include <QtTest/QtTest>

#include <QtDeclarative/qdeclarativeengine.h>

#include <QtDeclarative/qdeclarativeimageprovider.h>

#include <private/qdeclarativeimage_p.h>

#include <QImageReader>

// QDeclarativeImageProvider::request() is run in an idle thread where possible

// Be generous in our timeout.

#define TRY_WAIT(expr) \

    do { \

        for (int ii = 0; ii < 10; ++ii) { \

            if ((expr)) break; \

            QTest::qWait(100); \

        } \

        QVERIFY((expr)); \

    } while (false)

class tst_qdeclarativeimageprovider : public QObject

{

    Q_OBJECT

public:

    tst_qdeclarativeimageprovider()

    {

    }

private slots:

    void imageSource();

    void imageSource_data();

    void removeProvider();

private:

    QDeclarativeEngine engine;

};

class TestProvider : public QDeclarativeImageProvider

{

public:

    QImage request(const QString &id, QSize *size, const QSize& requested_size) {

        QImageReader io(SRCDIR "/data/" + id);

        if (size) *size = io.size();

        if (requested_size.isValid())

            io.setScaledSize(requested_size);

        return io.read();

    }

};

void tst_qdeclarativeimageprovider::imageSource_data()

{

    QTest::addColumn<QString>("source");

    QTest::addColumn<QString>("properties");

    QTest::addColumn<QSize>("size");

    QTest::addColumn<QString>("error");

    QTest::newRow("exists") << "image://test/exists.png" << "" << QSize(100,100) << "";

    QTest::newRow("scaled") << "image://test/exists.png" << "sourceSize: \"80x30\"" << QSize(80,30) << "";

    QTest::newRow("missing") << "image://test/no-such-file.png" << "" << QSize()

        << "file::2:1: QML Image: Failed to get image from provider: image://test/no-such-file.png";

    QTest::newRow("unknown provider") << "image://bogus/exists.png" << "" << QSize()

        << "file::2:1: QML Image: Failed to get image from provider: image://bogus/exists.png";

}

void tst_qdeclarativeimageprovider::imageSource()

{

    QFETCH(QString, source);

    QFETCH(QString, properties);

    QFETCH(QSize, size);

    QFETCH(QString, error);

    if (!error.isEmpty())

        QTest::ignoreMessage(QtWarningMsg, error.toUtf8());

    engine.addImageProvider("test", new TestProvider);

    QVERIFY(engine.imageProvider("test") != 0);

    QString componentStr = "import Qt 4.7\nImage { source: \"" + source + "\"; " + properties + " }";

    QDeclarativeComponent component(&engine);

    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));

    QDeclarativeImage *obj = qobject_cast<QDeclarativeImage*>(component.create());

    QVERIFY(obj != 0);

    TRY_WAIT(obj->status() == QDeclarativeImage::Loading);

    QCOMPARE(obj->source(), QUrl(source));

    if (error.isEmpty()) {

        TRY_WAIT(obj->status() == QDeclarativeImage::Ready);

        QCOMPARE(obj->width(), 100.0);

        QCOMPARE(obj->height(), 100.0);

        QCOMPARE(obj->pixmap().width(), size.width());

        QCOMPARE(obj->pixmap().height(), size.height());

        QCOMPARE(obj->fillMode(), QDeclarativeImage::Stretch);

        QCOMPARE(obj->progress(), 1.0);

    } else {

        TRY_WAIT(obj->status() == QDeclarativeImage::Error);

    }

    delete obj;

}

void tst_qdeclarativeimageprovider::removeProvider()

{

    engine.addImageProvider("test2", new TestProvider);

    QVERIFY(engine.imageProvider("test2") != 0);

    // add provider, confirm it works

    QString componentStr = "import Qt 4.7\nImage { source: \"image://test2/exists1.png\" }";

    QDeclarativeComponent component(&engine);

    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));

    QDeclarativeImage *obj = qobject_cast<QDeclarativeImage*>(component.create());

    QVERIFY(obj != 0);

    TRY_WAIT(obj->status() == QDeclarativeImage::Loading);

    TRY_WAIT(obj->status() == QDeclarativeImage::Ready);

    QCOMPARE(obj->width(), 100.0);

    // remove the provider and confirm

    QString error("file::2:1: QML Image: Failed to get image from provider: image://test2/exists2.png");

    QTest::ignoreMessage(QtWarningMsg, error.toUtf8());

    engine.removeImageProvider("test2");

    obj->setSource(QUrl("image://test2/exists2.png"));

    TRY_WAIT(obj->status() == QDeclarativeImage::Loading);

    TRY_WAIT(obj->status() == QDeclarativeImage::Error);

    delete obj;

}

QTEST_MAIN(tst_qdeclarativeimageprovider)

#include "tst_qdeclarativeimageprovider.moc"