qtdeclarative/tests/benchmarks/creationtime/tst_creationtime.cpp

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#include <QtQml>
#include <QtTest>

class tst_CreationTime : public QObject
{
    Q_OBJECT

private slots:
    void init();

    void controls();
    void controls_data();

    void material();
    void material_data();

    void universal();
    void universal_data();

    void calendar();
    void calendar_data();

private:
    QQmlEngine engine;
};

void tst_CreationTime::init()
{
    engine.clearComponentCache();
}

static void addTestRows(QQmlEngine *engine, const QString &sourcePath, const QString &targetPath, const QStringList &skiplist = QStringList())
{
    // We cannot use QQmlComponent to load QML files directly from the source tree.
    // For styles that use internal QML types (eg. material/Ripple.qml), the source
    // dir would be added as an "implicit" import path overriding the actual import
    // path (qtbase/qml/QtQuick/Controls.2/Material). => The QML engine fails to load
    // the style C++ plugin from the implicit import path (the source dir).
    //
    // Therefore we only use the source tree for finding out the set of QML files that
    // a particular style implements, and then we locate the respective QML files in
    // the engine's import path. This way we can use QQmlComponent to load each QML file
    // for benchmarking.

    const QFileInfoList entries = QDir(QQC2_IMPORT_PATH "/" + sourcePath).entryInfoList(QStringList("*.qml"), QDir::Files);
    for (const QFileInfo &entry : entries) {
        QString name = entry.baseName();
        if (!skiplist.contains(name)) {
            const auto importPathList = engine->importPathList();
            for (const QString &importPath : importPathList) {
                QString name = entry.dir().dirName() + "/" + entry.fileName();
                QString filePath = importPath + "/" + targetPath + "/" + entry.fileName();
                if (QFile::exists(filePath)) {
                    QTest::newRow(qPrintable(name)) << QUrl::fromLocalFile(filePath);
                    break;
                } else if (QFile::exists(QQmlFile::urlToLocalFileOrQrc(filePath))) {
                    QTest::newRow(qPrintable(name)) << QUrl(filePath);
                    break;
                }
            }
        }
    }
}

static void doBenchmark(QQmlEngine *engine, const QUrl &url)
{
    QQmlComponent component(engine);
    component.loadUrl(url);

    QObjectList objects;
    objects.reserve(4096);
    QBENCHMARK {
        QObject *object = component.create();
        QVERIFY2(object, qPrintable(component.errorString()));
        objects += object;
    }
    qDeleteAll(objects);
}

void tst_CreationTime::controls()
{
    QFETCH(QUrl, url);
    doBenchmark(&engine, url);
}

void tst_CreationTime::controls_data()
{
    QTest::addColumn<QUrl>("url");
    addTestRows(&engine, "controls", "QtQuick/Controls.2", QStringList() << "CheckIndicator" << "RadioIndicator" << "SwitchIndicator");
}

void tst_CreationTime::material()
{
    QFETCH(QUrl, url);
    doBenchmark(&engine, url);
}

void tst_CreationTime::material_data()
{
    QTest::addColumn<QUrl>("url");
    addTestRows(&engine, "controls/material", "QtQuick/Controls.2/Material", QStringList() << "Ripple" << "SliderHandle" << "CheckIndicator" << "RadioIndicator" << "SwitchIndicator" << "BoxShadow" << "ElevationEffect" << "CursorDelegate");
}

void tst_CreationTime::universal()
{
    QFETCH(QUrl, url);
    doBenchmark(&engine, url);
}

void tst_CreationTime::universal_data()
{
    QTest::addColumn<QUrl>("url");
    addTestRows(&engine, "controls/universal", "QtQuick/Controls.2/Universal", QStringList() << "CheckIndicator" << "RadioIndicator" << "SwitchIndicator");
}

void tst_CreationTime::calendar()
{
    QFETCH(QUrl, url);
    doBenchmark(&engine, url);
}

void tst_CreationTime::calendar_data()
{
    QTest::addColumn<QUrl>("url");
    addTestRows(&engine, "calendar", "Qt/labs/calendar");
}

QTEST_MAIN(tst_CreationTime)

#include "tst_creationtime.moc"