qt-everywhere-src-5.15.1/qtbase/tests/benchmarks/corelib/io/qtemporaryfile/main.cpp

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** This file is part of the test suite of the Qt Toolkit.
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#include <QDebug>
#include <QIODevice>
#include <QFile>
#include <QString>
#include <QTemporaryFile>
#include <qtest.h>


class tst_qtemporaryfile : public QObject
{
    Q_OBJECT
private slots:
    void openclose_data();
    void openclose();
    void readwrite_data() { openclose_data(); }
    void readwrite();

private:
};

void tst_qtemporaryfile::openclose_data()
{
    QTest::addColumn<qint64>("amount");
    QTest::newRow("100")   << qint64(100);
    QTest::newRow("1000")  << qint64(1000);
    QTest::newRow("10000") << qint64(10000);
}

void tst_qtemporaryfile::openclose()
{
    QFETCH(qint64, amount);

    QBENCHMARK {
        for (qint64 i = 0; i < amount; ++i) {
            QTemporaryFile file;
            file.open();
            file.close();
        }
    }
}

void tst_qtemporaryfile::readwrite()
{
    QFETCH(qint64, amount);

    const int dataSize = 4096;
    QByteArray data;
    data.fill('a', dataSize);
    QBENCHMARK {
        for (qint64 i = 0; i < amount; ++i) {
            QTemporaryFile file;
            file.open();
            file.write(data);
            file.seek(0);
            file.read(dataSize);
            file.close();
        }
    }
}

QTEST_MAIN(tst_qtemporaryfile)

#include "main.moc"