1 files changed, 510 insertions, 0 deletions
diff --git a/tests/benchmarks/corelib/text/qstring/tst_bench_qstring.cpp b/tests/benchmarks/corelib/text/qstring/tst_bench_qstring.cpp
new file mode 100644
index 0000000000..da5c0ff359
--- /dev/null
+++ b/tests/benchmarks/corelib/text/qstring/tst_bench_qstring.cpp
@@ -0,0 +1,510 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+#include <QStringList>
+#include <QByteArray>
+#include <QLatin1StringView>
+#include <QFile>
+#include <QTest>
+#include <limits>
+
+using namespace Qt::StringLiterals;
+
+class tst_QString: public QObject
+{
+    Q_OBJECT
+public:
+    tst_QString();
+private slots:
+    void section_regexp_data() { section_data_impl(); }
+    void section_regularexpression_data() { section_data_impl(); }
+    void section_regularexpression() { section_impl<QRegularExpression>(); }
+    void section_string_data() { section_data_impl(false); }
+    void section_string() { section_impl<QString>(); }
+
+    void toUpper_data();
+    void toUpper();
+    void toLower_data();
+    void toLower();
+    void toCaseFolded_data();
+    void toCaseFolded();
+
+    // Serializing:
+    void number_qlonglong_data();
+    void number_qlonglong() { number_impl<qlonglong>(); }
+    void number_qulonglong_data();
+    void number_qulonglong() { number_impl<qulonglong>(); }
+
+    void number_double_data();
+    void number_double();
+
+    // Parsing:
+    void toLongLong_data();
+    void toLongLong();
+    void toULongLong_data();
+    void toULongLong();
+    void toDouble_data();
+    void toDouble();
+
+    // operator=(~)
+#if !defined(QT_NO_CAST_FROM_ASCII) && !defined(QT_RESTRICTED_CAST_FROM_ASCII)
+    void operator_assign_BA() { operator_assign<QByteArray>(); }
+    void operator_assign_BA_data() { operator_assign_data(); }
+    void operator_assign_char() { operator_assign<const char*>(); };
+    void operator_assign_char_data() { operator_assign_data();}
+#endif
+    void operator_assign_L1SV() { operator_assign<QLatin1StringView>(); }
+    void operator_assign_L1SV_data() { operator_assign_data(); }
+
+private:
+    void section_data_impl(bool includeRegExOnly = true);
+    template <typename RX> void section_impl();
+    template <typename Integer> void number_impl();
+    template <typename T> void operator_assign();
+    void operator_assign_data();
+};
+
+tst_QString::tst_QString()
+{
+}
+
+void tst_QString::section_data_impl(bool includeRegExOnly)
+{
+    QTest::addColumn<QString>("s");
+    QTest::addColumn<QString>("sep");
+    QTest::addColumn<bool>("isRegExp");
+
+    QTest::newRow("IPv4") << QStringLiteral("192.168.0.1") << QStringLiteral(".") << false;
+    QTest::newRow("IPv6") << QStringLiteral("2001:0db8:85a3:0000:0000:8a2e:0370:7334") << QStringLiteral(":") << false;
+    if (includeRegExOnly) {
+        QTest::newRow("IPv6-reversed-roles") << QStringLiteral("2001:0db8:85a3:0000:0000:8a2e:0370:7334") << QStringLiteral("\\d+") << true;
+        QTest::newRow("IPv6-complex") << QStringLiteral("2001:0db8:85a3:0000:0000:8a2e:0370:7334") << QStringLiteral("(\\d+):\\1") << true;
+    }
+}
+
+template <typename RX>
+inline QString escape(const QString &s)
+{ return RX::escape(s); }
+
+template <>
+inline QString escape<QString>(const QString &s)
+{ return s; }
+
+template <typename RX>
+inline void optimize(RX &) {}
+
+template <>
+inline void optimize(QRegularExpression &rx)
+{ rx.optimize(); }
+
+template <typename RX>
+void tst_QString::section_impl()
+{
+    QFETCH(QString, s);
+    QFETCH(QString, sep);
+    QFETCH(bool, isRegExp);
+
+    RX rx(isRegExp ? sep : escape<RX>(sep));
+    optimize(rx);
+    for (int i = 0; i < 20; ++i)
+        (void) s.count(rx); // make (s, rx) hot
+
+    QBENCHMARK {
+        const QString result = s.section(rx, 0, 16);
+        Q_UNUSED(result);
+    }
+}
+
+void tst_QString::toUpper_data()
+{
+    QTest::addColumn<QString>("s");
+
+    QString lowerLatin1(300, QChar('a'));
+    QString upperLatin1(300, QChar('A'));
+
+    QString lowerDeseret;
+    {
+        QString pattern;
+        pattern += QChar(QChar::highSurrogate(0x10428));
+        pattern += QChar(QChar::lowSurrogate(0x10428));
+        for (int i = 0; i < 300 / pattern.size(); ++i)
+            lowerDeseret += pattern;
+    }
+    QString upperDeseret;
+    {
+        QString pattern;
+        pattern += QChar(QChar::highSurrogate(0x10400));
+        pattern += QChar(QChar::lowSurrogate(0x10400));
+        for (int i = 0; i < 300 / pattern.size(); ++i)
+            upperDeseret += pattern;
+    }
+
+    QString lowerLigature(600, QChar(0xFB03));
+
+    QTest::newRow("600<a>") << (lowerLatin1 + lowerLatin1);
+    QTest::newRow("600<A>") << (upperLatin1 + upperLatin1);
+
+    QTest::newRow("300<a>+300<A>") << (lowerLatin1 + upperLatin1);
+    QTest::newRow("300<A>+300<a>") << (upperLatin1 + lowerLatin1);
+
+    QTest::newRow("300<10428>") << (lowerDeseret + lowerDeseret);
+    QTest::newRow("300<10400>") << (upperDeseret + upperDeseret);
+
+    QTest::newRow("150<10428>+150<10400>") << (lowerDeseret + upperDeseret);
+    QTest::newRow("150<10400>+150<10428>") << (upperDeseret + lowerDeseret);
+
+    QTest::newRow("300a+150<10400>") << (lowerLatin1 + upperDeseret);
+    QTest::newRow("300a+150<10428>") << (lowerLatin1 + lowerDeseret);
+    QTest::newRow("300A+150<10400>") << (upperLatin1 + upperDeseret);
+    QTest::newRow("300A+150<10428>") << (upperLatin1 + lowerDeseret);
+
+    QTest::newRow("600<FB03> (ligature)") << lowerLigature;
+}
+
+void tst_QString::toUpper()
+{
+    QFETCH(QString, s);
+
+    QBENCHMARK {
+        [[maybe_unused]] auto r = s.toUpper();
+    }
+}
+
+void tst_QString::toLower_data()
+{
+    toUpper_data();
+}
+
+void tst_QString::toLower()
+{
+    QFETCH(QString, s);
+
+    QBENCHMARK {
+        [[maybe_unused]] auto r = s.toLower();
+    }
+}
+
+void tst_QString::toCaseFolded_data()
+{
+    toUpper_data();
+}
+
+void tst_QString::toCaseFolded()
+{
+    QFETCH(QString, s);
+
+    QBENCHMARK {
+        [[maybe_unused]] auto r = s.toCaseFolded();
+    }
+}
+
+template <typename Integer>
+void tst_QString::number_impl()
+{
+    QFETCH(Integer, number);
+    QFETCH(int, base);
+    QFETCH(QString, expected);
+
+    QString actual;
+    QBENCHMARK {
+        actual = QString::number(number, base);
+    }
+    QCOMPARE(actual, expected);
+}
+
+template <typename Integer>
+void number_integer_common()
+{
+    QTest::addColumn<Integer>("number");
+    QTest::addColumn<int>("base");
+    QTest::addColumn<QString>("expected");
+
+    QTest::newRow("0") << Integer(0ull) << 10 << QStringLiteral("0");
+    QTest::newRow("1234") << Integer(1234ull) << 10 << QStringLiteral("1234");
+    QTest::newRow("123456789") << Integer(123456789ull) << 10 << QStringLiteral("123456789");
+    QTest::newRow("bad1dea, base 16") << Integer(0xBAD1DEAull) << 16 << QStringLiteral("bad1dea");
+    QTest::newRow("242, base 8") << Integer(0242ull) << 8 << QStringLiteral("242");
+    QTest::newRow("101101, base 2") << Integer(0b101101ull) << 2 << QStringLiteral("101101");
+    QTest::newRow("ad, base 30") << Integer(313ull) << 30 << QStringLiteral("ad");
+}
+
+void tst_QString::number_qlonglong_data()
+{
+    number_integer_common<qlonglong>();
+
+    QTest::newRow("-1234") << -1234ll << 10 << QStringLiteral("-1234");
+    QTest::newRow("-123456789") << -123456789ll << 10 << QStringLiteral("-123456789");
+    QTest::newRow("-bad1dea, base 16") << -0xBAD1DEAll << 16 << QStringLiteral("-bad1dea");
+    QTest::newRow("-242, base 8") << -0242ll << 8 << QStringLiteral("-242");
+    QTest::newRow("-101101, base 2") << -0b101101ll << 2 << QStringLiteral("-101101");
+    QTest::newRow("-ad, base 30") << -313ll << 30 << QStringLiteral("-ad");
+
+    QTest::newRow("qlonglong-max")
+            << std::numeric_limits<qlonglong>::max() << 10 << QStringLiteral("9223372036854775807");
+    QTest::newRow("qlonglong-min")
+            << std::numeric_limits<qlonglong>::min() << 10
+            << QStringLiteral("-9223372036854775808");
+    QTest::newRow("qlonglong-max, base 2")
+            << std::numeric_limits<qlonglong>::max() << 2 << QString(63, u'1');
+    QTest::newRow("qlonglong-min, base 2") << std::numeric_limits<qlonglong>::min() << 2
+                                           << (QStringLiteral("-1") + QString(63, u'0'));
+    QTest::newRow("qlonglong-max, base 16")
+            << std::numeric_limits<qlonglong>::max() << 16 << (QChar(u'7') + QString(15, u'f'));
+    QTest::newRow("qlonglong-min, base 16") << std::numeric_limits<qlonglong>::min() << 16
+                                            << (QStringLiteral("-8") + QString(15, u'0'));
+}
+
+void tst_QString::number_qulonglong_data()
+{
+    number_integer_common<qulonglong>();
+
+    QTest::newRow("qlonglong-max + 1")
+            << (qulonglong(std::numeric_limits<qlonglong>::max()) + 1) << 10
+            << QStringLiteral("9223372036854775808");
+    QTest::newRow("qulonglong-max")
+            << std::numeric_limits<qulonglong>::max() << 10
+            << QStringLiteral("18446744073709551615");
+    QTest::newRow("qulonglong-max, base 2")
+            << std::numeric_limits<qulonglong>::max() << 2 << QString(64, u'1');
+    QTest::newRow("qulonglong-max, base 16")
+            << std::numeric_limits<qulonglong>::max() << 16 << QString(16, u'f');
+}
+
+void tst_QString::number_double_data()
+{
+    QTest::addColumn<double>("number");
+    QTest::addColumn<char>("format");
+    QTest::addColumn<int>("precision");
+    QTest::addColumn<QString>("expected");
+
+    struct
+    {
+        double d;
+        char f;
+        int p;
+        QString expected;
+    } data[] = {
+        { 0.0, 'f', 0, QStringLiteral("0") },
+        { 0.0001, 'f', 0, QStringLiteral("0") },
+        { 0.1234, 'f', 5, QStringLiteral("0.12340") },
+        { -0.1234, 'f', 5, QStringLiteral("-0.12340") },
+        { 0.5 + qSqrt(1.25), 'f', 15, QStringLiteral("1.618033988749895") },
+        { std::numeric_limits<double>::epsilon(), 'g', 10, QStringLiteral("2.220446049e-16") },
+        { 0.0001, 'E', 1, QStringLiteral("1.0E-04") },
+        { 1e8, 'E', 1, QStringLiteral("1.0E+08") },
+        { -1e8, 'E', 1, QStringLiteral("-1.0E+08") },
+    };
+
+    for (auto &datum : data) {
+        QTest::addRow("%s, format '%c', precision %d", qPrintable(datum.expected), datum.f,
+                      datum.p)
+                << datum.d << datum.f << datum.p << datum.expected;
+    }
+}
+
+void tst_QString::number_double()
+{
+    QFETCH(double, number);
+    QFETCH(char, format);
+    QFETCH(int, precision);
+    QFETCH(QString, expected);
+
+    QString actual;
+    QBENCHMARK {
+        actual = QString::number(number, format, precision);
+    }
+    QCOMPARE(actual, expected);
+}
+
+template <typename Integer>
+void toWholeCommon_data()
+{
+    QTest::addColumn<QString>("text");
+    QTest::addColumn<int>("base");
+    QTest::addColumn<bool>("good");
+    QTest::addColumn<Integer>("expected");
+
+    QTest::newRow("empty") << u""_s << 10 << false << Integer(0ull);
+    QTest::newRow("0") << u"0"_s << 10 << true << Integer(0ull);
+    QTest::newRow("1234") << u"1234"_s << 10 << true << Integer(1234ull);
+    QTest::newRow("1,234") << u"1,234"_s << 10 << false << Integer(0ull);
+    QTest::newRow("123456789")
+            << u"123456789"_s << 10 << true << Integer(123456789ull);
+    QTest::newRow("bad1dea, base 16")
+            << u"bad1dea"_s << 16 << true << Integer(0xBAD1DEAull);
+    QTest::newRow("bad1dea, base 10") << u"bad1dea"_s << 10 << false << Integer(0ull);
+    QTest::newRow("42, base 13") << u"42"_s << 13 << true << Integer(6ull * 9ull);
+    QTest::newRow("242, base 8") << u"242"_s << 8 << true << Integer(0242ull);
+    QTest::newRow("495, base 8") << u"495"_s << 8 << false << Integer(0ull);
+    QTest::newRow("101101, base 2")
+            << u"101101"_s << 2 << true << Integer(0b101101ull);
+    QTest::newRow("ad, base 30") << u"ad"_s << 30 << true << Integer(313ull);
+}
+
+void tst_QString::toLongLong_data()
+{
+    toWholeCommon_data<qlonglong>();
+
+    QTest::newRow("-1234") << u"-1234"_s << 10 << true << -1234ll;
+    QTest::newRow("-123456789") << u"-123456789"_s << 10 << true << -123456789ll;
+    QTest::newRow("-bad1dea, base 16") << u"-bad1dea"_s << 16 << true << -0xBAD1DEAll;
+    QTest::newRow("-242, base 8") << u"-242"_s << 8 << true << -0242ll;
+    QTest::newRow("-101101, base 2") << u"-101101"_s << 2 << true << -0b101101ll;
+    QTest::newRow("-ad, base 30") << u"-ad"_s << 30 << true << -313ll;
+
+    QTest::newRow("qlonglong-max")
+            << u"9223372036854775807"_s << 10 << true
+            << std::numeric_limits<qlonglong>::max();
+    QTest::newRow("qlonglong-min")
+            << u"-9223372036854775808"_s << 10 << true
+            << std::numeric_limits<qlonglong>::min();
+    QTest::newRow("qlonglong-max, base 2")
+            << QString(63, u'1') << 2 << true << std::numeric_limits<qlonglong>::max();
+    QTest::newRow("qlonglong-min, base 2")
+            << (u"-1"_s + QString(63, u'0')) << 2 << true
+            << std::numeric_limits<qlonglong>::min();
+    QTest::newRow("qlonglong-max, base 16")
+            << (QChar(u'7') + QString(15, u'f')) << 16 << true
+            << std::numeric_limits<qlonglong>::max();
+    QTest::newRow("qlonglong-min, base 16")
+            << (u"-8"_s + QString(15, u'0')) << 16 << true
+            << std::numeric_limits<qlonglong>::min();
+}
+
+void tst_QString::toLongLong()
+{
+    QFETCH(QString, text);
+    QFETCH(int, base);
+    QFETCH(bool, good);
+    QFETCH(qlonglong, expected);
+
+    qlonglong actual = expected;
+    bool ok = false;
+    QBENCHMARK {
+        actual = text.toLongLong(&ok, base);
+    }
+    QCOMPARE(ok, good);
+    QCOMPARE(actual, expected);
+}
+
+void tst_QString::toULongLong_data()
+{
+    toWholeCommon_data<qulonglong>();
+
+    QTest::newRow("qlonglong-max + 1")
+            << u"9223372036854775808"_s << 10 << true
+            << (qulonglong(std::numeric_limits<qlonglong>::max()) + 1);
+    QTest::newRow("qulonglong-max")
+            << u"18446744073709551615"_s << 10 << true
+            << std::numeric_limits<qulonglong>::max();
+    QTest::newRow("qulonglong-max, base 2")
+            << QString(64, u'1') << 2 << true << std::numeric_limits<qulonglong>::max();
+    QTest::newRow("qulonglong-max, base 16")
+            << QString(16, u'f') << 16 << true << std::numeric_limits<qulonglong>::max();
+}
+
+void tst_QString::toULongLong()
+{
+    QFETCH(QString, text);
+    QFETCH(int, base);
+    QFETCH(bool, good);
+    QFETCH(qulonglong, expected);
+
+    qulonglong actual = expected;
+    bool ok = false;
+    QBENCHMARK {
+        actual = text.toULongLong(&ok, base);
+    }
+    QCOMPARE(ok, good);
+    QCOMPARE(actual, expected);
+}
+
+void tst_QString::toDouble_data()
+{
+    QTest::addColumn<QString>("text");
+    QTest::addColumn<bool>("good");
+    QTest::addColumn<double>("expected");
+
+    QTest::newRow("empty") << u""_s << false << 0.0;
+    QTest::newRow("0") << u"0"_s << true << 0.0;
+    QTest::newRow("0.12340") << u"0.12340"_s << true << 0.12340;
+    QTest::newRow("-0.12340") << u"-0.12340"_s << true << -0.12340;
+    QTest::newRow("epsilon")
+        << u"2.220446049e-16"_s << true << std::numeric_limits<double>::epsilon();
+    QTest::newRow("1.0e-4") << u"1.0e-4"_s << true << 1.0e-4;
+    QTest::newRow("1.0e+4") << u"1.0e+4"_s << true << 1.0e+4;
+    QTest::newRow("10.e+3") << u"10.e+3"_s << true << 1.0e+4;
+    QTest::newRow("10e+3.") << u"10e+3."_s << false << 0.0;
+    QTest::newRow("1e4") << u"1e4"_s << true << 1.0e+4;
+    QTest::newRow("1.0e-8") << u"1.0e-8"_s << true << 1.0e-8;
+    QTest::newRow("1.0e+8") << u"1.0e+8"_s << true << 1.0e+8;
+
+    // NaN and infinity:
+    QTest::newRow("nan") << u"nan"_s << true << qQNaN();
+    QTest::newRow("NaN") << u"NaN"_s << true << qQNaN();
+    QTest::newRow("-nan") << u"-nan"_s << false << 0.0;
+    QTest::newRow("+nan") << u"+nan"_s << false << 0.0;
+    QTest::newRow("inf") << u"inf"_s << true << qInf();
+    QTest::newRow("Inf") << u"Inf"_s << true << qInf();
+    QTest::newRow("+inf") << u"+inf"_s << true << qInf();
+    QTest::newRow("-inf") << u"-inf"_s << true << -qInf();
+}
+
+void tst_QString::toDouble()
+{
+    QFETCH(QString, text);
+    QFETCH(bool, good);
+    QFETCH(double, expected);
+
+    double actual = expected;
+    bool ok = false;
+    QBENCHMARK {
+        actual = text.toDouble(&ok);
+    }
+    QCOMPARE(ok, good);
+    QCOMPARE(actual, expected);
+}
+
+template <typename T> void tst_QString::operator_assign()
+{
+    QFETCH(QByteArray, data);
+    QString str(data.size(), Qt::Uninitialized);
+
+    T tdata;
+    if constexpr (std::is_same_v<T, const char*>) {
+        tdata = data.constData();
+    } else if constexpr (std::is_same_v<T, QLatin1String>) {
+        tdata = T(data.constData(), data.size());
+    } else {
+        tdata = T(data.constData(), data.size());
+        tdata.detach();
+    }
+
+    QBENCHMARK {
+        str.operator=(tdata);
+    }
+}
+
+void tst_QString::operator_assign_data()
+{
+    QTest::addColumn<QByteArray>("data");
+
+    QByteArray data;
+    data.fill('a', 5);
+    QTest::newRow("length: 5") << data;
+    data.fill('b', 10);
+    QTest::newRow("length: 10") << data;
+    data.fill('c', 20);
+    QTest::newRow("length: 20") << data;
+    data.fill('d', 50);
+    QTest::newRow("length: 50") << data;
+    data.fill('e', 100);
+    QTest::newRow("length: 100") << data;
+    data.fill('f', 500);
+    QTest::newRow("length: 500") << data;
+    data.fill('g', 1'000);
+    QTest::newRow("length: 1'000") << data;
+}
+
+QTEST_APPLESS_MAIN(tst_QString)
+
+#include "tst_bench_qstring.moc"