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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QTest>
#include <QSignalSpy>
#include <QtCore/QProcess>
#include <QtCore/QElapsedTimer>
class tst_QProcess : public QObject
{
Q_OBJECT
private slots:
void echoTest_performance();
};
#ifdef Q_OS_WIN
# define EXE ".exe"
#else
# define EXE ""
#endif
void tst_QProcess::echoTest_performance()
{
QProcess process;
process.start(QFINDTESTDATA("../testProcessLoopback/testProcessLoopback" EXE));
QByteArray array;
array.resize(1024 * 1024);
for (int j = 0; j < array.size(); ++j)
array[j] = 'a' + (j % 20);
QVERIFY(process.waitForStarted());
QElapsedTimer stopWatch;
stopWatch.start();
qint64 totalBytes = 0;
QByteArray dump;
QSignalSpy readyReadSpy(&process, SIGNAL(readyRead()));
QVERIFY(readyReadSpy.isValid());
while (stopWatch.elapsed() < 2000) {
process.write(array);
while (process.bytesToWrite() > 0) {
int readCount = readyReadSpy.size();
QVERIFY(process.waitForBytesWritten(5000));
if (readyReadSpy.size() == readCount)
QVERIFY(process.waitForReadyRead(5000));
}
while (process.bytesAvailable() < array.size())
QVERIFY2(process.waitForReadyRead(5000), qPrintable(process.errorString()));
dump = process.readAll();
totalBytes += dump.size();
}
qDebug() << "Elapsed time:" << stopWatch.elapsed() << "ms;"
<< "transfer rate:" << totalBytes / (1048.576) / stopWatch.elapsed()
<< "MB/s";
for (int j = 0; j < array.size(); ++j)
QCOMPARE(char(dump.at(j)), char('a' + (j % 20)));
process.closeWriteChannel();
QVERIFY(process.waitForFinished());
}
QTEST_MAIN(tst_QProcess)
#include "tst_bench_qprocess.moc"
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