benchmarking.cpp Example File

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 #include <QtWidgets>
 #include <qtest.h>

 class TestBenchmark : public QObject
 {
     Q_OBJECT
 private slots:
     void simple();
     void multiple_data();
     void multiple();
     void series_data();
     void series();
 };

 void TestBenchmark::simple()
 {
     QString str1 = QLatin1String("This is a test string");
     QString str2 = QLatin1String("This is a test string");

     QCOMPARE(str1.localeAwareCompare(str2), 0);

     QBENCHMARK {
         str1.localeAwareCompare(str2);
     }
 }

 void TestBenchmark::multiple_data()
 {
     QTest::addColumn<bool>("useLocaleCompare");
     QTest::newRow("locale aware compare") << true;
     QTest::newRow("standard compare") << false;
 }

 void TestBenchmark::multiple()
 {
     QFETCH(bool, useLocaleCompare);
     QString str1 = QLatin1String("This is a test string");
     QString str2 = QLatin1String("This is a test string");

     int result;
     if (useLocaleCompare) {
         QBENCHMARK {
             result = str1.localeAwareCompare(str2);
         }
     } else {
         QBENCHMARK {
             result = (str1 == str2);
         }
     }
 }

 void TestBenchmark::series_data()
 {
     QTest::addColumn<bool>("useLocaleCompare");
     QTest::addColumn<int>("stringSize");

     for (int i = 1; i < 10000; i += 2000) {
         QByteArray size = QByteArray::number(i);
         QTest::newRow(("locale aware compare--" + size).constData()) << true << i;
         QTest::newRow(("standard compare--" + size).constData()) << false << i;
     }
 }

 void TestBenchmark::series()
 {
     QFETCH(bool, useLocaleCompare);
     QFETCH(int, stringSize);

     QString str1 = QString().fill('A', stringSize);
     QString str2 = QString().fill('A', stringSize);
     int result;
     if (useLocaleCompare) {
         QBENCHMARK {
             result = str1.localeAwareCompare(str2);
         }
     } else {
         QBENCHMARK {
             result = (str1 == str2);
         }
     }
 }

 QTEST_MAIN(TestBenchmark)
 #include "benchmarking.moc"