1 files changed, 555 insertions, 0 deletions
diff --git a/tests/benchmarks/corelib/time/qdatetime/tst_bench_qdatetime.cpp b/tests/benchmarks/corelib/time/qdatetime/tst_bench_qdatetime.cpp
new file mode 100644
index 0000000000..1c86eae009
--- /dev/null
+++ b/tests/benchmarks/corelib/time/qdatetime/tst_bench_qdatetime.cpp
@@ -0,0 +1,555 @@
+// Copyright (C) 2022 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#include <QDateTime>
+#include <QTimeZone>
+#include <QTest>
+#include <QList>
+#include <qdebug.h>
+#include <QtCore/private/qdatetime_p.h>
+
+class tst_QDateTime : public QObject
+{
+    Q_OBJECT
+
+    static QList<QDateTime> daily(qint64 start, qint64 end);
+#if QT_CONFIG(timezone)
+    static QList<QDateTime> norse(qint64 start, qint64 end);
+#endif
+    void decade_data();
+
+private Q_SLOTS:
+    void create_data() { decade_data(); }
+    void create();
+    void isNull();
+    void isValid();
+    void date();
+    void time();
+    void timeSpec();
+    void offsetFromUtc();
+    void timeZoneAbbreviation();
+    void toMSecsSinceEpoch_data() { decade_data(); }
+    void toMSecsSinceEpoch();
+#if QT_CONFIG(timezone) 
+    void toMSecsSinceEpochTz_data() { decade_data(); }
+    void toMSecsSinceEpochTz();
+#endif
+    void setDate();
+    void setTime();
+#if QT_DEPRECATED_SINCE(6, 9)
+    void setTimeSpec();
+    void setOffsetFromUtc();
+#endif
+    void setMSecsSinceEpoch();
+#if QT_CONFIG(timezone)
+    void setMSecsSinceEpochTz();
+#endif
+    void toString();
+    void toStringTextFormat();
+    void toStringIsoFormat();
+    void addDays();
+#if QT_CONFIG(timezone)
+    void addDaysTz();
+    void addMSecsTz();
+#endif
+    void addMSecs();
+#if QT_DEPRECATED_SINCE(6, 9)
+    void toTimeSpec();
+    void toOffsetFromUtc();
+#endif
+    void daysTo();
+    void msecsTo();
+    void equivalent();
+    void equivalentUtc();
+    void lessThan();
+    void lessThanUtc();
+    void currentDateTime();
+    void currentDate();
+    void currentTime();
+    void currentDateTimeUtc();
+    void currentMSecsSinceEpoch();
+    void fromString();
+    void fromStringText();
+    void fromStringIso();
+    void fromMSecsSinceEpoch();
+    void fromMSecsSinceEpochUtc();
+#if QT_CONFIG(timezone)
+    void fromMSecsSinceEpochTz();
+#endif
+};
+
+using namespace QtPrivate::DateTimeConstants;
+constexpr qint64 JULIAN_DAY_1 = 1721426;
+constexpr qint64 JULIAN_DAY_11 = 1725078;
+constexpr qint64 JULIAN_DAY_1890 = 2411369;
+constexpr qint64 JULIAN_DAY_1900 = 2415021;
+constexpr qint64 JULIAN_DAY_1950 = 2433283;
+constexpr qint64 JULIAN_DAY_1960 = 2436935;
+constexpr qint64 JULIAN_DAY_1970 = 2440588; // Epoch
+constexpr qint64 JULIAN_DAY_2010 = 2455198;
+constexpr qint64 JULIAN_DAY_2011 = 2455563;
+constexpr qint64 JULIAN_DAY_2020 = 2458850;
+constexpr qint64 JULIAN_DAY_2050 = 2469808;
+constexpr qint64 JULIAN_DAY_2060 = 2473460;
+
+void tst_QDateTime::decade_data()
+{
+    QTest::addColumn<qint64>("startJd");
+    QTest::addColumn<qint64>("stopJd");
+
+    QTest::newRow("first-decade-CE") << JULIAN_DAY_1 << JULIAN_DAY_11;
+    QTest::newRow("1890s") << JULIAN_DAY_1890 << JULIAN_DAY_1900;
+    QTest::newRow("1950s") << JULIAN_DAY_1950 << JULIAN_DAY_1960;
+    QTest::newRow("2010s") << JULIAN_DAY_2010 << JULIAN_DAY_2020;
+    QTest::newRow("2050s") << JULIAN_DAY_2050 << JULIAN_DAY_2060;
+}
+
+QList<QDateTime> tst_QDateTime::daily(qint64 start, qint64 end)
+{
+    QList<QDateTime> list;
+    list.reserve(end - start);
+    for (int jd = start; jd < end; ++jd)
+        list.append(QDateTime(QDate::fromJulianDay(jd).startOfDay()));
+    return list;
+}
+#if QT_CONFIG(timezone)
+QList<QDateTime> tst_QDateTime::norse(qint64 start, qint64 end)
+{
+    const QTimeZone cet("Europe/Oslo");
+    QList<QDateTime> list;
+    list.reserve(end - start);
+    for (int jd = start; jd < end; ++jd)
+        list.append(QDateTime(QDate::fromJulianDay(jd).startOfDay(cet)));
+    return list;
+}
+#endif
+void tst_QDateTime::create()
+{
+    QFETCH(const qint64, startJd);
+    QFETCH(const qint64, stopJd);
+    const QTime noon = QTime::fromMSecsSinceStartOfDay(43200);
+    QBENCHMARK {
+        for (int jd = startJd; jd < stopJd; ++jd) {
+            QDateTime test(QDate::fromJulianDay(jd), noon);
+            Q_UNUSED(test);
+        }
+    }
+}
+
+void tst_QDateTime::isNull()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.isNull();
+    }
+}
+
+void tst_QDateTime::isValid()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.isValid();
+    }
+}
+
+void tst_QDateTime::date()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.date();
+    }
+}
+
+void tst_QDateTime::time()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.time();
+    }
+}
+
+void tst_QDateTime::timeSpec()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.timeSpec();
+    }
+}
+
+void tst_QDateTime::offsetFromUtc()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.offsetFromUtc();
+    }
+}
+
+void tst_QDateTime::timeZoneAbbreviation()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.timeZoneAbbreviation();
+    }
+}
+
+void tst_QDateTime::toMSecsSinceEpoch()
+{
+    QFETCH(const qint64, startJd);
+    QFETCH(const qint64, stopJd);
+    const auto list = daily(startJd, stopJd);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.toMSecsSinceEpoch();
+    }
+}
+#if QT_CONFIG(timezone)
+void tst_QDateTime::toMSecsSinceEpochTz()
+{
+    QFETCH(const qint64, startJd);
+    QFETCH(const qint64, stopJd);
+    const auto list = norse(startJd, stopJd);
+
+    qint64 result;
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            result = test.toMSecsSinceEpoch();
+    }
+    Q_UNUSED(result);
+}
+#endif
+void tst_QDateTime::setDate()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (QDateTime test : list)
+            test.setDate(QDate::fromJulianDay(JULIAN_DAY_2010));
+    }
+}
+
+void tst_QDateTime::setTime()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (QDateTime test : list)
+            test.setTime(QTime(12, 0, 0));
+    }
+}
+
+#if QT_DEPRECATED_SINCE(6, 9)
+QT_WARNING_PUSH
+QT_WARNING_DISABLE_DEPRECATED
+void tst_QDateTime::setTimeSpec()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (QDateTime test : list)
+            test.setTimeSpec(Qt::UTC);
+    }
+}
+
+void tst_QDateTime::setOffsetFromUtc()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (QDateTime test : list)
+            test.setOffsetFromUtc(3600);
+    }
+}
+QT_WARNING_POP
+#endif // 6.9 deprecation
+
+void tst_QDateTime::setMSecsSinceEpoch()
+{
+    qint64 msecs = qint64(JULIAN_DAY_2010 - JULIAN_DAY_1970 + 180) * MSECS_PER_DAY;
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (QDateTime test : list)
+            test.setMSecsSinceEpoch(msecs);
+    }
+}
+#if QT_CONFIG(timezone)
+void tst_QDateTime::setMSecsSinceEpochTz()
+{
+    const qint64 msecs = qint64(JULIAN_DAY_2010 - JULIAN_DAY_1970 + 180) * MSECS_PER_DAY;
+    const auto list = norse(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (QDateTime test : list)
+            test.setMSecsSinceEpoch(msecs);
+    }
+}
+#endif
+void tst_QDateTime::toString()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2011);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.toString(QStringLiteral("yyy-MM-dd hh:mm:ss.zzz t"));
+    }
+}
+
+void tst_QDateTime::toStringTextFormat()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2011);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.toString(Qt::TextDate);
+    }
+}
+
+void tst_QDateTime::toStringIsoFormat()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2011);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.toString(Qt::ISODate);
+    }
+}
+
+void tst_QDateTime::addDays()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QDateTime next;
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            next = test.addDays(1);
+    }
+    Q_UNUSED(next);
+}
+#if QT_CONFIG(timezone)
+void tst_QDateTime::addDaysTz()
+{
+    const auto list = norse(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            QDateTime result = test.addDays(1);
+    }
+}
+#endif
+void tst_QDateTime::addMSecs()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QDateTime next;
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            next = test.addMSecs(1);
+    }
+    Q_UNUSED(next);
+}
+#if QT_CONFIG(timezone)
+void tst_QDateTime::addMSecsTz()
+{
+    const auto list = norse(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            QDateTime result = test.addMSecs(1);
+    }
+}
+#endif
+#if QT_DEPRECATED_SINCE(6, 9)
+QT_WARNING_PUSH
+QT_WARNING_DISABLE_DEPRECATED
+void tst_QDateTime::toTimeSpec()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.toTimeSpec(Qt::UTC);
+    }
+}
+
+void tst_QDateTime::toOffsetFromUtc()
+{
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.toOffsetFromUtc(3600);
+    }
+}
+QT_WARNING_POP
+#endif
+
+void tst_QDateTime::daysTo()
+{
+    const QDateTime other = QDateTime::fromMSecsSinceEpoch(
+        qint64(JULIAN_DAY_2010 - JULIAN_DAY_1970) * MSECS_PER_DAY);
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.daysTo(other);
+    }
+}
+
+void tst_QDateTime::msecsTo()
+{
+    const QDateTime other = QDateTime::fromMSecsSinceEpoch(
+        qint64(JULIAN_DAY_2010 - JULIAN_DAY_1970) * MSECS_PER_DAY);
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            test.msecsTo(other);
+    }
+}
+
+void tst_QDateTime::equivalent()
+{
+    bool result;
+    const QDateTime other = QDateTime::fromMSecsSinceEpoch(
+        qint64(JULIAN_DAY_2010 - JULIAN_DAY_1970) * MSECS_PER_DAY);
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            result = (test == other);
+    }
+    Q_UNUSED(result);
+}
+
+void tst_QDateTime::equivalentUtc()
+{
+    bool result = false;
+    const QDateTime other = QDateTime::fromMSecsSinceEpoch(
+        qint64(JULIAN_DAY_2010 - JULIAN_DAY_1970) * MSECS_PER_DAY, QTimeZone::UTC);
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            result = (test == other);
+    }
+    Q_UNUSED(result);
+}
+
+void tst_QDateTime::lessThan()
+{
+    bool result = false;
+    const QDateTime other = QDateTime::fromMSecsSinceEpoch(
+        qint64(JULIAN_DAY_2010 - JULIAN_DAY_1970) * MSECS_PER_DAY);
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            result = (test < other);
+    }
+    Q_UNUSED(result);
+}
+
+void tst_QDateTime::lessThanUtc()
+{
+    bool result = false;
+    const QDateTime other = QDateTime::fromMSecsSinceEpoch(
+        qint64(JULIAN_DAY_2010 - JULIAN_DAY_1970) * MSECS_PER_DAY, QTimeZone::UTC);
+    const auto list = daily(JULIAN_DAY_2010, JULIAN_DAY_2020);
+    QBENCHMARK {
+        for (const QDateTime &test : list)
+            result = (test < other);
+    }
+    Q_UNUSED(result);
+}
+
+void tst_QDateTime::currentDateTime()
+{
+    QBENCHMARK {
+        for (int i = 0; i < 1000; ++i)
+            QDateTime::currentDateTime();
+    }
+}
+
+void tst_QDateTime::currentDate()
+{
+    QBENCHMARK {
+        for (int i = 0; i < 1000; ++i)
+            QDate::currentDate();
+    }
+}
+
+void tst_QDateTime::currentTime()
+{
+    QBENCHMARK {
+        for (int i = 0; i < 1000; ++i)
+            QTime::currentTime();
+    }
+}
+
+void tst_QDateTime::currentDateTimeUtc()
+{
+    QBENCHMARK {
+        for (int i = 0; i < 1000; ++i)
+            QDateTime::currentDateTimeUtc();
+    }
+}
+
+void tst_QDateTime::currentMSecsSinceEpoch()
+{
+    QBENCHMARK {
+        for (int i = 0; i < 1000; ++i)
+            QDateTime::currentMSecsSinceEpoch();
+    }
+}
+
+void tst_QDateTime::fromString()
+{
+    QString format = "yyyy-MM-dd hh:mm:ss.zzz";
+    QString input = "2010-01-01 13:12:11.999";
+    QVERIFY(QDateTime::fromString(input, format).isValid());
+    QBENCHMARK {
+        for (int i = 0; i < 1000; ++i)
+            QDateTime::fromString(input, format);
+    }
+}
+
+void tst_QDateTime::fromStringText()
+{
+    QString input = "Wed Jan 2 01:02:03.000 2013 GMT";
+    QBENCHMARK {
+        for (int i = 0; i < 1000; ++i)
+            QDateTime::fromString(input, Qt::TextDate);
+    }
+}
+
+void tst_QDateTime::fromStringIso()
+{
+    QString input = "2010-01-01T13:28:34.999Z";
+    QBENCHMARK {
+        for (int i = 0; i < 1000; ++i)
+            QDateTime::fromString(input, Qt::ISODate);
+    }
+}
+
+void tst_QDateTime::fromMSecsSinceEpoch()
+{
+    const int start = JULIAN_DAY_2010 - JULIAN_DAY_1970;
+    const int end = JULIAN_DAY_2020 - JULIAN_DAY_1970;
+    QBENCHMARK {
+        for (int jd = start; jd < end; ++jd)
+            QDateTime::fromMSecsSinceEpoch(jd * MSECS_PER_DAY);
+    }
+}
+
+void tst_QDateTime::fromMSecsSinceEpochUtc()
+{
+    const int start = JULIAN_DAY_2010 - JULIAN_DAY_1970;
+    const int end = JULIAN_DAY_2020 - JULIAN_DAY_1970;
+    QBENCHMARK {
+        for (int jd = start; jd < end; ++jd)
+            QDateTime::fromMSecsSinceEpoch(jd * MSECS_PER_DAY, QTimeZone::UTC);
+    }
+}
+#if QT_CONFIG(timezone)
+void tst_QDateTime::fromMSecsSinceEpochTz()
+{
+    const int start = JULIAN_DAY_2010 - JULIAN_DAY_1970;
+    const int end = JULIAN_DAY_2020 - JULIAN_DAY_1970;
+    const QTimeZone cet("Europe/Oslo");
+    QBENCHMARK {
+        for (int jd = start; jd < end; ++jd)
+            QDateTime test = QDateTime::fromMSecsSinceEpoch(jd * MSECS_PER_DAY, cet);
+    }
+}
+#endif
+
+QTEST_MAIN(tst_QDateTime)
+
+#include "tst_bench_qdatetime.moc"