tst_qdebug.cpp - mozsearch

qt/qtbase/tests/auto/corelib/io/qdebug/tst_qdebug.cpp

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// Copyright (C) 2016 The Qt Company Ltd.

// Copyright (C) 2016 Intel Corporation.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#include <QtCore/QCoreApplication>

#include <QtCore/QtCompare>

#include <QtCore/QtDebug>

#include <QTest>

#include <QtCore/qbuffer.h>

#include <QtConcurrentRun>

#include <QFutureSynchronizer>

#include <QVariant>

#include <QSemaphore>

#include <QLine>

#include <QMimeType>

#include <QMimeDatabase>

#include <QMetaType>

#include <q20chrono.h>

#ifdef __cpp_lib_memory_resource

# include <memory_resource>

namespace pmr = std::pmr;

#else

namespace pmr = std;

#endif

#include <set>

#include <tuple>

#include <unordered_map>

#include <unordered_set>

using namespace std::chrono;

using namespace q20::chrono;

using namespace Qt::StringLiterals;

static_assert(QTypeTraits::has_ostream_operator_v<QDebug, int>);

static_assert(QTypeTraits::has_ostream_operator_v<QDebug, QMetaType>);

static_assert(QTypeTraits::has_ostream_operator_v<QDebug, QList<int>>);

static_assert(QTypeTraits::has_ostream_operator_v<QDebug, QMap<int, QString>>);

static_assert(QTypeTraits::has_ostream_operator_v<QDebug, std::multiset<int>>);

static_assert(QTypeTraits::has_ostream_operator_v<QDebug, std::set<int>>);

static_assert(QTypeTraits::has_ostream_operator_v<QDebug, std::tuple<int, QString, QMap<int, QString>>>);

static_assert(QTypeTraits::has_ostream_operator_v<QDebug, std::unordered_map<int, QString>>);

static_assert(QTypeTraits::has_ostream_operator_v<QDebug, std::unordered_set<int>>);

struct NonStreamable {};

static_assert(!QTypeTraits::has_ostream_operator_v<QDebug, NonStreamable>);

static_assert(!QTypeTraits::has_ostream_operator_v<QDebug, QList<NonStreamable>>);

static_assert(!QTypeTraits::has_ostream_operator_v<QDebug, QMap<int, NonStreamable>>);

struct ConvertsToQVariant {

    operator QVariant() {return QVariant::fromValue(*this);};

};

static_assert(!QTypeTraits::has_ostream_operator_v<QDebug, ConvertsToQVariant>);

#if defined(Q_OS_DARWIN)

#include <objc/runtime.h>

#include <Foundation/Foundation.h>

#endif

class tst_QDebug: public QObject

    Q_OBJECT

public:

    enum EnumType { EnumValue1 = 1, EnumValue2 = INT_MIN };

    enum FlagType { EnumFlag1 = 1, EnumFlag2 = INT_MIN };

    enum Enum64Type { Enum64Value1 = 1, Enum64Value2 = Q_UINT64_C(0x1'0000'0002) };

    enum Flag64Type : qlonglong { Enum64Flag1 = 1, Enum64Flag2 = Q_UINT64_C(0x1'0000'0002) };

    Q_ENUM(EnumType)

    Q_ENUM(Enum64Type)

    Q_DECLARE_FLAGS(Flags, FlagType)

    Q_FLAG(Flags)

    Q_DECLARE_FLAGS(Flags64, Flag64Type)

    Q_FLAG(Flags64)

private slots:

    void assignment() const;

    void warningWithoutDebug() const;

    void criticalWithoutDebug() const;

    void basics() const;

    void constructors() const;

    void debugWithBool() const;

    void debugSpaceHandling() const;

    void debugNoQuotes() const;

    void verbosity() const;

    void stateSaver() const;

    void veryLongWarningMessage() const;

    void qDebugQChar() const;

    void qDebugQMetaType() const;

    void qDebugQString() const;

    void qDebugQStringView() const;

    void qDebugQUtf8StringView() const;

    void qDebugQLatin1String() const;

    void qDebugStdMultiSet() const;

    void qDebugStdPair() const;

    void qDebugStdSet() const;

    void qDebugStdTuple() const;

    void qDebugStdUnorderedMap() const;

    void qDebugStdUnorderedSet() const;

    void qDebugStdString() const;

    void qDebugStdStringView() const;

    void qDebugStdWString() const;

    void qDebugStdWStringView() const;

    void qDebugStdU8String() const;

    void qDebugStdU8StringView() const;

    void qDebugStdU16String() const;

    void qDebugStdU16StringView() const;

    void qDebugStdU32String() const;

    void qDebugStdU32StringView() const;

    void qDebugQByteArray() const;

    void qDebugQByteArrayView() const;

    void qDebugQFlags() const;

    void qDebugQFlags64() const;

    void qDebugStdChrono_data() const;

    void qDebugStdChrono() const;

    void qDebugStdOptional() const;

    void qDebugStdOrdering() const;

    void textStreamModifiers() const;

    void resetFormat() const;

    void defaultMessagehandler() const;

    void threadSafety() const;

    void toString() const;

    void toBytes() const;

    void noQVariantEndlessRecursion() const;

#if defined(Q_OS_DARWIN)

    void objcInCppMode_data() const;

    void objcInCppMode() const;

    void objcInObjcMode_data() const;

    void objcInObjcMode() const;

#endif

};

Q_DECLARE_OPERATORS_FOR_FLAGS(tst_QDebug::Flags)

Q_DECLARE_OPERATORS_FOR_FLAGS(tst_QDebug::Flags64)

void tst_QDebug::assignment() const

    QDebug debug1(QtDebugMsg);

    QDebug debug2(QtWarningMsg);

    QTest::ignoreMessage(QtDebugMsg, "foo");

    QTest::ignoreMessage(QtWarningMsg, "bar 1 2");

    debug1 << "foo";

    debug2 << "bar";

    debug1 = debug2;

    debug1 << "1";

    debug2 << "2";

static QtMsgType s_msgType;

static QString s_msg;

static QByteArray s_file;

static int s_line;

static QByteArray s_function;

static void myMessageHandler(QtMsgType type, const QMessageLogContext &context, const QString &msg)

    s_msg = msg;

    s_msgType = type;

    s_file = context.file;

    s_line = context.line;

    s_function = context.function;

// Helper class to ensure that the testlib message handler gets

// restored at the end of each test function, even if the test

// fails or throws an exception.

class MessageHandlerSetter

public:

    MessageHandlerSetter(QtMessageHandler newMessageHandler)

        : oldMessageHandler(qInstallMessageHandler(newMessageHandler))

{ }

    ~MessageHandlerSetter()

        qInstallMessageHandler(oldMessageHandler);

private:

    QtMessageHandler oldMessageHandler;

};

/*! \internal

  The qWarning() stream should be usable even if QT_NO_DEBUG is defined.

*/

void tst_QDebug::warningWithoutDebug() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

    { qWarning() << "A qWarning() message"; }

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 2; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtWarningMsg);

    QCOMPARE(s_msg, QString::fromLatin1("A qWarning() message"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

/*! \internal

  The qCritical() stream should be usable even if QT_NO_DEBUG is defined.

*/

void tst_QDebug::criticalWithoutDebug() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

    { qCritical() << "A qCritical() message"; }

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 2; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtCriticalMsg);

    QCOMPARE(s_msg, QString::fromLatin1("A qCritical() message"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

void tst_QDebug::basics() const

    // test simple types, without quoting or other modifications

    // (bool tested in the next function)

    MessageHandlerSetter mhs(myMessageHandler);

    qDebug() << 'X';

    QCOMPARE(s_msg, "X");

    qDebug() << 123;

    QCOMPARE(s_msg, "123");

    qDebug() << 456U;

    QCOMPARE(s_msg, "456");

    qDebug() << -123L;

    QCOMPARE(s_msg, "-123");

    qDebug() << 456UL;

    QCOMPARE(s_msg, "456");

    qDebug() << Q_INT64_C(-123);

    QCOMPARE(s_msg, "-123");

    qDebug() << Q_UINT64_C(456);

    QCOMPARE(s_msg, "456");

    qDebug() << "Hello";

    QCOMPARE(s_msg, "Hello");

    qDebug() << u"World";

    QCOMPARE(s_msg, "World");

    qDebug() << (void *)0xfff;

    QCOMPARE(s_msg, "0xfff");

    qDebug() << nullptr;

    QCOMPARE(s_msg, "(nullptr)");

void tst_QDebug::constructors() const

    const char input[] = "testing QDebug constructors";

    const QLatin1StringView expected{"testing QDebug constructors "};

    // QDebug(QString *); no buffering for a QTextStream that operates on a QString,

    // so flushing is no-op, see QTextStream::flush()

        QString str;

        QDebug d(&str);

        d << input;

        QCOMPARE(str, expected);

    // QDebug(QByteArray *)

        QByteArray ba;

        QDebug d(&ba);

        d << input << Qt::flush;

        QCOMPARE(ba, expected);

        QByteArray ba;

            QDebug d(&ba);

            d << input;

        QCOMPARE(ba, expected);

    // QDebug(QIODevice *)

        QByteArray ba;

        QBuffer buf(&ba);

        QVERIFY(buf.open(QIODevice::WriteOnly));

        QDebug d(&buf);

        d << input << Qt::flush;

        QCOMPARE(ba, expected);

        QByteArray ba;

        QBuffer buf(&ba);

        QVERIFY(buf.open(QIODevice::WriteOnly));

            QDebug d(&buf);

            d << input;

        QCOMPARE(ba, expected);

void tst_QDebug::debugWithBool() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

    { qDebug() << false << true; }

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 2; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("false true"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

class MyPoint

public:

    MyPoint(int val1, int val2)

        : v1(val1), v2(val2) {}

    int v1;

    int v2;

};

QDebug operator<< (QDebug s, const MyPoint& point)

    const QDebugStateSaver saver(s);

    s.nospace() << "MyPoint(" << point.v1 << ", " << point.v2 << ")";

    return s;

class MyLine

public:

    MyLine(const MyPoint& point1, const MyPoint& point2)

        : p1(point1), p2(point2) {}

    MyPoint p1;

    MyPoint p2;

};

QDebug operator<< (QDebug s, const MyLine& line)

    const QDebugStateSaver saver(s);

    s.nospace();

    s << "MyLine(" << line.p1 << ", "<< line.p2;

    if (s.verbosity() > 2)

        s << ", Manhattan length=" << (qAbs(line.p2.v1 - line.p1.v1) + qAbs(line.p2.v2 - line.p1.v2));

    s << ')';

    return s;

void tst_QDebug::debugSpaceHandling() const

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        QVERIFY(d.autoInsertSpaces());

        d.setAutoInsertSpaces(false);

        QVERIFY(!d.autoInsertSpaces());

        d << "  ";

        d.setAutoInsertSpaces(true);

        QVERIFY(d.autoInsertSpaces());

        d << "foo";

        d.nospace();

        d << "key=" << "value";

        d.space();

        d << 1 << 2;

        MyLine line(MyPoint(10, 11), MyPoint (12, 13));

        d << line;

        d << "bar";

        // With the old implementation of MyPoint doing dbg.nospace() << ...; dbg.space() we ended up with

        // MyLine(MyPoint(10, 11) ,  MyPoint(12, 13) )

    QCOMPARE(s_msg, QString::fromLatin1("  foo key=value 1 2 MyLine(MyPoint(10, 11), MyPoint(12, 13)) bar"));

    QVERIFY(qDebug().autoInsertSpaces());

    qDebug() << QPoint(21, 22) << QRect(23, 24, 25, 26) << QLine(27, 28, 29, 30);

    QCOMPARE(s_msg, QString::fromLatin1("QPoint(21,22) QRect(23,24 25x26) QLine(QPoint(27,28),QPoint(29,30))"));

    qDebug() << QPointF(21, 22) << QRectF(23, 24, 25, 26) << QLineF(27, 28, 29, 30);

    QCOMPARE(s_msg, QString::fromLatin1("QPointF(21,22) QRectF(23,24 25x26) QLineF(QPointF(27,28),QPointF(29,30))"));

    qDebug() << QMimeType() << QMimeDatabase().mimeTypeForName("application/pdf") << "foo";

    QCOMPARE(s_msg, QString::fromLatin1("QMimeType(invalid) QMimeType(\"application/pdf\") foo"));

void tst_QDebug::debugNoQuotes() const

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        QVERIFY(d.quoteStrings());

        d << QStringLiteral("Hello");

        QVERIFY(d.quoteStrings());

        d.noquote();

        QVERIFY(!d.quoteStrings());

        d << QStringLiteral("Hello");

        QVERIFY(!d.quoteStrings());

        d.quote();

        QVERIFY(d.quoteStrings());

        d << QStringLiteral("Hello");

        QVERIFY(d.quoteStrings());

    QCOMPARE(s_msg, QString::fromLatin1("\"Hello\" Hello \"Hello\""));

        QDebug d = qDebug();

        d << QChar('H');

        d << QLatin1String("Hello");

        d << QByteArray("Hello");

        d.setQuoteStrings(false);

        d << QChar('H');

        d << QLatin1String("Hello");

        d << QByteArray("Hello");

    QCOMPARE(s_msg, QString::fromLatin1("'H' \"Hello\" \"Hello\" H Hello Hello"));

void tst_QDebug::verbosity() const

    MyLine line(MyPoint(10, 11), MyPoint (12, 13));

    QString output;

    QDebug d(&output);

    d.nospace();

    d << line << '\n';

    const int oldVerbosity = d.verbosity();

    d.setVerbosity(0);

    QCOMPARE(d.verbosity(), 0);

    d.setVerbosity(7);

    QCOMPARE(d.verbosity(), 7);

    const int newVerbosity = oldVerbosity  + 2;

    d.setVerbosity(newVerbosity);

    QCOMPARE(d.verbosity(), newVerbosity);

    d << line << '\n';

    d.setVerbosity(oldVerbosity );

    QCOMPARE(d.verbosity(), oldVerbosity );

    d << line;

    const QStringList lines = output.split(QLatin1Char('\n'));

    QCOMPARE(lines.size(), 3);

    // Verbose should be longer

    QVERIFY2(lines.at(1).size() > lines.at(0).size(), qPrintable(lines.join(QLatin1Char(','))));

    // Switching back to brief produces same output

    QCOMPARE(lines.at(0).size(), lines.at(2).size());

void tst_QDebug::stateSaver() const

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << 42;

            QDebugStateSaver saver(d);

            d << 43;

        d << 44;

    QCOMPARE(s_msg, QString::fromLatin1("42 43 44"));

        QDebug d = qDebug();

            QDebugStateSaver saver(d);

            d.nospace() << Qt::hex << Qt::right << qSetFieldWidth(3) << qSetPadChar('0') << 42;

        d << 42;

    QCOMPARE(s_msg, QString::fromLatin1("02a 42"));

        QDebug d = qDebug();

            QDebugStateSaver saver(d);

            d.nospace().noquote() << QStringLiteral("Hello");

        d << QStringLiteral("World");

    QCOMPARE(s_msg, QString::fromLatin1("Hello \"World\""));

        QDebug d = qDebug();

        d.noquote().nospace() << QStringLiteral("Hello") << Qt::hex << 42;

            QDebugStateSaver saver(d);

            d.resetFormat();

            d << QStringLiteral("World") << 42;

        d << QStringLiteral("!") << 42;

    QCOMPARE(s_msg, QString::fromLatin1("Hello2a\"World\" 42!2a"));

void tst_QDebug::veryLongWarningMessage() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

    QString test;

        QString part("0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789\n");

        for (int i = 0; i < 1000; ++i)

            test.append(part);

        qWarning("Test output:\n%s\nend", qPrintable(test));

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 3; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtWarningMsg);

    QCOMPARE(s_msg, QString::fromLatin1("Test output:\n")+test+QString::fromLatin1("\nend"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

void tst_QDebug::qDebugQChar() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << QChar('f') << QChar(QLatin1Char('\xE4')); // f, ä

        d.nospace().noquote() << QChar('o') << QChar('o')  << QChar(QLatin1Char('\xC4')); // o, o, Ä

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("'f' '\\u00e4' oo\\u00c4"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

void tst_QDebug::qDebugQMetaType() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << QMetaType::fromType<int>() << QMetaType::fromType<QString>();

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 4; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, R"(QMetaType(int) QMetaType(QString))"_L1);

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

void tst_QDebug::qDebugQString() const

    /* Use a basic string. */

        QString file, function;

        int line = 0;

        const QString in(QLatin1String("input"));

        const QStringView inRef{ in };

        MessageHandlerSetter mhs(myMessageHandler);

        { qDebug() << inRef; }

#ifndef QT_NO_MESSAGELOGCONTEXT

        file = __FILE__; line = __LINE__ - 2; function = Q_FUNC_INFO;

#endif

        QCOMPARE(s_msgType, QtDebugMsg);

        QCOMPARE(s_msg, QString::fromLatin1("\"input\""));

        QCOMPARE(QString::fromLatin1(s_file), file);

        QCOMPARE(s_line, line);

        QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    MessageHandlerSetter mhs(myMessageHandler);

    QString string = "Hello";

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"Hello\""));

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, string);

    qDebug().noquote().nospace() << qSetFieldWidth(8) << string;

    QCOMPARE(s_msg, "   " + string);

    string = "Sm\xc3\xb8rg\xc3\xa5sbord "                               // Latin script

             "\xce\x91\xce\xb8\xce\xae\xce\xbd\xce\xb1 "                // Greek script

             "\xd0\x9c\xd0\xbe\xd1\x81\xd0\xba\xd0\xb2\xd0\xb0";        // Cyrillic script

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, string);

    // This string only contains printable characters

    qDebug() << string;

    QCOMPARE(s_msg, '"' + string + '"');

    string = "\n\t\\\"";

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, string);

    // This string only contains characters that must be escaped

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\n\\t\\\\\\\"\""));

    // Unicode escapes, BMP

    string = "\1"                           // U+0001: START OF HEADING (category Cc)

             "\x7f"                         // U+007F: DELETE (category Cc)

             "\xc2\xad"                     // U+00AD: SOFT HYPHEN (category Cf)

             "\xef\xbb\xbf";                // U+FEFF: ZERO WIDTH NO-BREAK SPACE / BOM (category Cf)

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\u0001\\u007F\\u00AD\\uFEFF\""));

    // Unicode printable non-BMP

    string = "\xf0\x90\x80\x80";            // U+10000: LINEAR B SYLLABLE B008 A (category Lo)

    qDebug() << string;

    QCOMPARE(s_msg, '"' + string + '"');

    // non-BMP and non-printable

    string = "\xf3\xa0\x80\x81 "            // U+E0001: LANGUAGE TAG (category Cf)

             "\xf4\x80\x80\x80";            // U+100000: Plane 16 Private Use (category Co)

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\U000E0001 \\U00100000\""));

    // broken surrogate pairs

    char16_t utf16[] = { 0xDC00, 0xD800, 'x', 0xD800, 0 };

    string = QString::fromUtf16(utf16);

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\uDC00\\uD800x\\uD800\""));

void tst_QDebug::qDebugQStringView() const

    /* Use a basic string. */

        QLatin1String file, function;

        int line = 0;

        const QStringView inView = u"input";

        MessageHandlerSetter mhs(myMessageHandler);

        { qDebug() << inView; }

#ifndef QT_NO_MESSAGELOGCONTEXT

        file = QLatin1String(__FILE__); line = __LINE__ - 2; function = QLatin1String(Q_FUNC_INFO);

#endif

        QCOMPARE(s_msgType, QtDebugMsg);

        QCOMPARE(s_msg, QLatin1String("\"input\""));

        QCOMPARE(QLatin1String(s_file), file);

        QCOMPARE(s_line, line);

        QCOMPARE(QLatin1String(s_function), function);

    /* Use a null QStringView. */

        QString file, function;

        int line = 0;

        const QStringView inView;

        MessageHandlerSetter mhs(myMessageHandler);

        { qDebug() << inView; }

#ifndef QT_NO_MESSAGELOGCONTEXT

        file = __FILE__; line = __LINE__ - 2; function = Q_FUNC_INFO;

#endif

        QCOMPARE(s_msgType, QtDebugMsg);

        QCOMPARE(s_msg, QLatin1String("\"\""));

        QCOMPARE(QLatin1String(s_file), file);

        QCOMPARE(s_line, line);

        QCOMPARE(QLatin1String(s_function), function);

void tst_QDebug::qDebugQUtf8StringView() const

    /* Use a utf8 string. */

        QLatin1String file, function;

        int line = 0;

        const QUtf8StringView inView = u8"\U0001F609 is ;-)";

        MessageHandlerSetter mhs(myMessageHandler);

        { qDebug() << inView; }

#ifndef QT_NO_MESSAGELOGCONTEXT

        file = QLatin1String(__FILE__); line = __LINE__ - 2; function = QLatin1String(Q_FUNC_INFO);

#endif

        QCOMPARE(s_msgType, QtDebugMsg);

        QCOMPARE(s_msg, QString::fromUtf8("\"\\xF0\\x9F\\x98\\x89 is ;-)\""));

        QCOMPARE(QLatin1String(s_file), file);

        QCOMPARE(s_line, line);

        QCOMPARE(QLatin1String(s_function), function);

    /* Use a null QUtf8StringView. */

        QString file, function;

        int line = 0;

        const QUtf8StringView inView;

        MessageHandlerSetter mhs(myMessageHandler);

        { qDebug() << inView; }

#ifndef QT_NO_MESSAGELOGCONTEXT

        file = __FILE__; line = __LINE__ - 2; function = Q_FUNC_INFO;

#endif

        QCOMPARE(s_msgType, QtDebugMsg);

        QCOMPARE(s_msg, QLatin1String("\"\""));

        QCOMPARE(QLatin1String(s_file), file);

        QCOMPARE(s_line, line);

        QCOMPARE(QLatin1String(s_function), function);

void tst_QDebug::qDebugQLatin1String() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << QLatin1String("foo") << QLatin1String("") << QLatin1String("barbaz", 3);

        d.nospace().noquote() << QLatin1String("baz");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("\"foo\" \"\" \"bar\" baz"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    QLatin1String string("\"Hello\"");

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\\"Hello\\\"\""));

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, QString(string));

    qDebug().noquote().nospace() << qSetFieldWidth(8) << string;

    QCOMPARE(s_msg, " " + QString(string));

    string = QLatin1String("\nSm\xF8rg\xE5sbord\\");

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, QString(string));

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\nSm\\u00F8rg\\u00E5sbord\\\\\""));

void tst_QDebug::qDebugStdMultiSet() const

    QByteArray file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        std::multiset<int> multiset{1, 2, 3, 2, 1};

        d.nospace().noquote() << multiset;

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, "std::multiset(1, 1, 2, 2, 3)"_L1);

    QCOMPARE(s_file, file);

    QCOMPARE(s_line, line);

    QCOMPARE(s_function, function);

    qDebug() << std::multiset<std::string>{"apple", "banana", "cherry", "banana", "apple"};

    QCOMPARE(s_msg, "std::multiset(\"apple\", \"apple\", \"banana\", \"banana\", \"cherry\")"_L1);

    qDebug() << std::multiset<int>{};

    QCOMPARE(s_msg, "std::multiset()"_L1);

void tst_QDebug::qDebugStdPair() const

    QByteArray file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << std::pair(42, u"foo"_s) << std::pair(u"barbaz"_s, 4.2);

        d.nospace().noquote() << std::pair(u"baz"_s, -42);

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, R"(std::pair(42, "foo") std::pair("barbaz", 4.2) std::pair(baz, -42))"_L1);

    QCOMPARE(s_file, file);

    QCOMPARE(s_line, line);

    QCOMPARE(s_function, function);

    /* simpler tests from now on */

    // nested:

    qDebug() << std::pair(std::pair(std::pair(4.2, 42), ".42"), u"42"_s);

    QCOMPARE(s_msg, R"(std::pair(std::pair(std::pair(4.2, 42), .42), "42"))"_L1);

    // with references:

        auto d = 4.2; auto i = 42;

        qDebug() << std::pair<double &, const int &>(d, i);

        QCOMPARE(s_msg, R"(std::pair(4.2, 42))"_L1);

        s_msg.clear(); // avoid False Positives (next line outputs same as prior)

        qDebug() << std::pair<const double &&, int &&>(std::move(d), std::move(i));

        QCOMPARE(s_msg, R"(std::pair(4.2, 42))"_L1);

void tst_QDebug::qDebugStdSet() const

    QByteArray file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        std::set<int>set{1, 2, 3, 2, 1};

        d.nospace().noquote() << set;

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, "std::set(1, 2, 3)"_L1);

    QCOMPARE(s_file, file);

    QCOMPARE(s_line, line);

    QCOMPARE(s_function, function);

    qDebug() << std::set<std::string>{"apple", "banana", "cherry", "banana", "apple"};

    QCOMPARE(s_msg, "std::set(\"apple\", \"banana\", \"cherry\")"_L1);

    qDebug() << std::set<int>{};

    QCOMPARE(s_msg, "std::set()"_L1);

void tst_QDebug::qDebugStdTuple() const

    QByteArray file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << std::tuple(42, u"foo"_s, 4.2) << std::tuple(42);

        d.nospace().noquote() << std::tuple(u"baz"_s);

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, R"(std::tuple(42, "foo", 4.2) std::tuple(42) std::tuple(baz))"_L1);

    QCOMPARE(s_file, file);

    QCOMPARE(s_line, line);

    QCOMPARE(s_function, function);

    /* simpler tests from now on */

#ifndef Q_OS_QNX // QNX's stdlib doesn't appear to allow nesting tuples (at least not w/CTAD)...

    // nested:

    qDebug() << std::tuple(std::tuple(std::tuple(4.2, 42), ".42"), u"42"_s);

    QCOMPARE(s_msg, R"(std::tuple(std::tuple(std::tuple(4.2, 42), .42), "42"))"_L1);

#endif

    // empty:

    qDebug() << std::tuple<>();

    QCOMPARE(s_msg, R"(std::tuple())"_L1);

    // very long:

    qDebug() << std::tuple(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,

                           16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31);

    QCOMPARE(s_msg, R"(std::tuple(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31))"_L1);

    // with references:

        auto d = 4.2; auto i = 42; auto s = u"foo"_s;

        qDebug() << std::tie(d, i, s);

        QCOMPARE(s_msg, R"(std::tuple(4.2, 42, "foo"))"_L1);

        s_msg.clear(); // avoid False Positives (next line outputs same as prior)

        qDebug() << std::forward_as_tuple(std::move(d), std::move(i), std::as_const(s));

        QCOMPARE(s_msg, R"(std::tuple(4.2, 42, "foo"))"_L1);

void tst_QDebug::qDebugStdUnorderedMap() const

    QByteArray file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        std::unordered_map<int, QString> unorderedMap{{1, "One"}, {2, "Two"}, {3, "Three"}};

        d.nospace().noquote() << unorderedMap;

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QStringList expectedValues = {"std::unordered_map","std::pair(1, One)","std::pair(2, Two)","std::pair(3, Three)"};

    for (const QString &expextedValue : expectedValues)

        QVERIFY(s_msg.contains(expextedValue));

    QCOMPARE(s_file, file);

    QCOMPARE(s_line, line);

    QCOMPARE(s_function, function);

    qDebug() << std::unordered_map<std::string, float>{{"quarter", 0.25f}, {"half", 0.5f}, {"full", 1.0f}};

    expectedValues = {"std::unordered_map","std::pair(\"quarter\", 0.25)","std::pair(\"half\", 0.5)","std::pair(\"full\", 1)"};

    for (const QString &expectedValue : expectedValues)

        QVERIFY(s_msg.contains(expectedValue));

    qDebug()<< std::unordered_map<int, QString> {};

    QCOMPARE(s_msg, "std::unordered_map()"_L1);

void tst_QDebug::qDebugStdUnorderedSet() const

    QByteArray file, function;

    [[maybe_unused]] int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        std::unordered_set<int> unorderedSet{1, 2, 3, 2, 1};

        d.nospace().noquote() << unorderedSet;

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QStringList expectedValues = {"std::unordered_set", "1", "2", "3"};

    for (const QString &expectedValue : expectedValues)

        QVERIFY(s_msg.contains(expectedValue));

    qDebug() << std::unordered_set<std::string>{"apple", "banana", "cherry", "banana", "apple"};

    expectedValues = {"std::unordered_set", "\"apple\"", "\"banana\"", "\"cherry\""};

    for (const QString &expectedValue : expectedValues)

        QVERIFY(s_msg.contains(expectedValue));

    qDebug() << std::unordered_set<int>{};

    QCOMPARE(s_msg, "std::unordered_set()"_L1);

void tst_QDebug::qDebugStdString() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << pmr::string("foo") << std::string("") << std::string("barbaz", 3);

        d.nospace().noquote() << std::string("baz");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("\"foo\" \"\" \"bar\" baz"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    std::string string("\"Hello\"");

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\\"Hello\\\"\""));

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, QString::fromStdString(string));

    qDebug().noquote().nospace() << qSetFieldWidth(8) << string;

    QCOMPARE(s_msg, " " + QString::fromStdString(string));

void tst_QDebug::qDebugStdStringView() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << std::string_view("foo") << std::string_view("") << std::string_view("barbaz", 3);

        d.nospace().noquote() << std::string_view("baz");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("\"foo\" \"\" \"bar\" baz"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    std::string_view string("\"Hello\"");

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\\"Hello\\\"\""));

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, QString::fromStdString(std::string(string)));

    qDebug().noquote().nospace() << qSetFieldWidth(8) << string;

    QCOMPARE(s_msg, " " + QString::fromStdString(std::string(string)));

void tst_QDebug::qDebugStdWString() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << pmr::wstring(L"foo") << std::wstring(L"") << std::wstring(L"barbaz", 3);

        d.nospace().noquote() << std::wstring(L"baz");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("\"foo\" \"\" \"bar\" baz"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    std::wstring string(L"\"Hello\"");

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\\"Hello\\\"\""));

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, QString::fromStdWString(string));

    qDebug().noquote().nospace() << qSetFieldWidth(8) << string;

    QCOMPARE(s_msg, " " + QString::fromStdWString(string));

void tst_QDebug::qDebugStdWStringView() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << std::wstring_view(L"foo") << std::wstring_view(L"") << std::wstring_view(L"barbaz", 3);

        d.nospace().noquote() << std::wstring_view(L"baz");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("\"foo\" \"\" \"bar\" baz"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    std::wstring_view string(L"\"Hello\"");

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\\"Hello\\\"\""));

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, QString::fromStdWString(std::wstring(string)));

    qDebug().noquote().nospace() << qSetFieldWidth(8) << string;

    QCOMPARE(s_msg, " " + QString::fromStdWString(std::wstring(string)));

void tst_QDebug::qDebugStdU8String() const

#ifndef __cpp_lib_char8_t

    QSKIP("This test requires C++20 char8_t support enabled in the compiler.");

#else

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << pmr::u8string(u8"foo") << std::u8string(u8"") << std::u8string(u8"barbaz", 3);

        d.nospace().noquote() << std::u8string(u8"baz");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("\"foo\" \"\" \"bar\" baz"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    std::u8string string(u8"\"Hello\"");

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\\"Hello\\\"\""));

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, QUtf8StringView(string).toString());

    qDebug().noquote().nospace() << qSetFieldWidth(8) << string;

    QCOMPARE(s_msg, " " + QUtf8StringView(string).toString());

#endif // __cpp_lib_char8_t

void tst_QDebug::qDebugStdU8StringView() const

#ifndef __cpp_lib_char8_t

    QSKIP("This test requires C++20 char8_t support enabled in the compiler.");

#else

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << std::u16string_view(u"foo") << std::u16string_view(u"") << std::u16string_view(u"barbaz", 3);

        d.nospace().noquote() << std::u16string_view(u"baz");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("\"foo\" \"\" \"bar\" baz"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    std::u16string_view string(u"\"Hello\"");

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\\"Hello\\\"\""));

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, QString::fromStdU16String(std::u16string(string)));

    qDebug().noquote().nospace() << qSetFieldWidth(8) << string;

    QCOMPARE(s_msg, " " + QString::fromStdU16String(std::u16string(string)));

#endif // __cpp_lib_char8_t

void tst_QDebug::qDebugStdU16String() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << pmr::u16string(u"foo") << std::u16string(u"") << std::u16string(u"barbaz", 3);

        d.nospace().noquote() << std::u16string(u"baz");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("\"foo\" \"\" \"bar\" baz"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    std::u16string string(u"\"Hello\"");

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\\"Hello\\\"\""));

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, QString::fromStdU16String(string));

    qDebug().noquote().nospace() << qSetFieldWidth(8) << string;

    QCOMPARE(s_msg, " " + QString::fromStdU16String(string));

void tst_QDebug::qDebugStdU16StringView() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << std::u16string_view(u"foo") << std::u16string_view(u"") << std::u16string_view(u"barbaz", 3);

        d.nospace().noquote() << std::u16string_view(u"baz");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("\"foo\" \"\" \"bar\" baz"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    std::u16string_view string(u"\"Hello\"");

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\\"Hello\\\"\""));

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, QString::fromStdU16String(std::u16string(string)));

    qDebug().noquote().nospace() << qSetFieldWidth(8) << string;

    QCOMPARE(s_msg, " " + QString::fromStdU16String(std::u16string(string)));

void tst_QDebug::qDebugStdU32String() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << pmr::u32string(U"foo") << std::u32string(U"") << std::u32string(U"barbaz", 3);

        d.nospace().noquote() << std::u32string(U"baz");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("\"foo\" \"\" \"bar\" baz"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    std::u32string string(U"\"Hello\"");

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\\"Hello\\\"\""));

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, QString::fromStdU32String(string));

    qDebug().noquote().nospace() << qSetFieldWidth(8) << string;

    QCOMPARE(s_msg, " " + QString::fromStdU32String(string));

void tst_QDebug::qDebugStdU32StringView() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << std::u32string_view(U"foo") << std::u32string_view(U"") << std::u32string_view(U"barbaz", 3);

        d.nospace().noquote() << std::u32string_view(U"baz");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("\"foo\" \"\" \"bar\" baz"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    std::u32string_view string(U"\"Hello\"");

    qDebug() << string;

    QCOMPARE(s_msg, QString("\"\\\"Hello\\\"\""));

    qDebug().noquote().nospace() << string;

    QCOMPARE(s_msg, QString::fromStdU32String(std::u32string(string)));

    qDebug().noquote().nospace() << qSetFieldWidth(8) << string;

    QCOMPARE(s_msg, " " + QString::fromStdU32String(std::u32string(string)));

void tst_QDebug::qDebugQByteArray() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << QByteArrayLiteral("foo") << QByteArrayLiteral("") << QByteArray("barbaz", 3);

        d.nospace().noquote() << QByteArrayLiteral("baz");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("\"foo\" \"\" \"bar\" baz"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    QByteArray ba = "\"Hello\"";

    qDebug() << ba;

    QCOMPARE(s_msg, QString("\"\\\"Hello\\\"\""));

    qDebug().noquote().nospace() << ba;

    QCOMPARE(s_msg, QString::fromLatin1(ba));

    qDebug().noquote().nospace() << qSetFieldWidth(8) << ba;

    QCOMPARE(s_msg, " " + QString::fromLatin1(ba));

    ba = "\nSm\xC3\xB8rg\xC3\xA5sbord\\";

    qDebug().noquote().nospace() << ba;

    QCOMPARE(s_msg, QString::fromUtf8(ba));

    qDebug() << ba;

    QCOMPARE(s_msg, QString("\"\\nSm\\xC3\\xB8rg\\xC3\\xA5sbord\\\\\""));

    // ensure that it closes hex escape sequences correctly

    qDebug() << QByteArray("\377FFFF");

    QCOMPARE(s_msg, QString("\"\\xFF\"\"FFFF\""));

void tst_QDebug::qDebugQByteArrayView() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << QByteArrayView("foo") << QByteArrayView("") << QByteArrayView("barbaz", 3);

        d.nospace().noquote() << QByteArrayView("baz");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("\"foo\" \"\" \"bar\" baz"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    QByteArrayView ba = "\"Hello\"";

    qDebug() << ba;

    QCOMPARE(s_msg, QString("\"\\\"Hello\\\"\""));

    qDebug().noquote().nospace() << ba;

    QCOMPARE(s_msg, QString::fromLatin1(ba));

    qDebug().noquote().nospace() << qSetFieldWidth(8) << ba;

    QCOMPARE(s_msg, " " + QString::fromLatin1(ba));

    ba = "\nSm\xC3\xB8rg\xC3\xA5sbord\\";

    qDebug().noquote().nospace() << ba;

    QCOMPARE(s_msg, QString::fromUtf8(ba));

    qDebug() << ba;

    QCOMPARE(s_msg, QString("\"\\nSm\\xC3\\xB8rg\\xC3\\xA5sbord\\\\\""));

    // ensure that it closes hex escape sequences correctly

    qDebug() << QByteArrayView("\377FFFF");

    QCOMPARE(s_msg, QString("\"\\xFF\"\"FFFF\""));

enum TestEnum {

    Flag1 = 0x1,

    Flag2 = 0x10,

    SignFlag = INT_MIN,

};

Q_DECLARE_FLAGS(TestFlags, TestEnum)

void tst_QDebug::qDebugQFlags() const

    QString file, function;

    int line = 0;

    QFlags<TestEnum> flags(Flag1 | Flag2 | SignFlag);

    MessageHandlerSetter mhs(myMessageHandler);

    // first, test QFlags on an enum where neither are Q_FLAG or Q_ENUM

    { qDebug() << flags; }

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 2; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("QFlags(0x1|0x10|0x80000000)"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    // QFlags where the backing enum is a Q_ENUM but the QFlags isn't a QFLAG

    QFlags<EnumType> flags2(EnumValue2);

    qDebug() << flags2;

    QCOMPARE(s_msg, QString::fromLatin1("QFlags<tst_QDebug::EnumType>(EnumValue2)"));

    // And now for one that was fully declared

    tst_QDebug::Flags flags3(EnumFlag1);

    qDebug() << flags3;

    QCOMPARE(s_msg, QString::fromLatin1("QFlags<tst_QDebug::FlagType>(EnumFlag1)"));

enum class TestEnum64 : qulonglong {

    Flag1 = 0x1,

    Flag2 = Q_UINT64_C(0x8000'0000'0000'0000)

};

Q_DECLARE_FLAGS(TestFlags64, TestEnum64)

Q_DECLARE_OPERATORS_FOR_FLAGS(TestFlags64)

void tst_QDebug::qDebugQFlags64() const

    QString file, function;

    int line = 0;

    QFlags<TestEnum64> flags(TestEnum64::Flag1 | TestEnum64::Flag2);

    MessageHandlerSetter mhs(myMessageHandler);

    // first, test QFlags on an enum where neither are Q_FLAG or Q_ENUM

    qDebug() << flags;

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 2; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, "QFlags(0x1|0x8000000000000000)");

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    // QFlags where the backing enum is a Q_ENUM but the QFlags isn't a QFLAG

    QFlags<Enum64Type> flags2(Enum64Value2);

    qDebug() << flags2;

    QCOMPARE(s_msg, QString::fromLatin1("QFlags<tst_QDebug::Enum64Type>(Enum64Value2)"));

    // And now for one that was fully declared

    tst_QDebug::Flags64 flags3(Enum64Flag1|Enum64Flag2);

    qDebug() << flags3;

    QCOMPARE(s_msg, QString::fromLatin1("QFlags<tst_QDebug::Flag64Type>(Enum64Flag1|Enum64Flag2)"));

using ToStringFunction = std::function<QString()>;

void tst_QDebug::qDebugStdChrono_data() const

    using attoseconds = duration<int64_t, std::atto>;

    using femtoseconds = duration<int64_t, std::femto>;

    using picoseconds = duration<int64_t, std::pico>;

    using centiseconds = duration<int64_t, std::centi>;

    using deciseconds = duration<int64_t, std::deci>;

    using quadriennia = duration<int, std::ratio_multiply<std::ratio<4>, years::period>>;

    using decades = duration<int, std::ratio_multiply<years::period, std::deca>>; // decayears

    using centuries = duration<int16_t, std::ratio_multiply<years::period, std::hecto>>; // hectoyears

    using millennia = duration<int16_t, std::ratio_multiply<years::period, std::kilo>>; // kiloyears

    using gigayears = duration<int8_t, std::ratio_multiply<years::period, std::giga>>;

    using fortnights = duration<int, std::ratio_multiply<days::period, std::ratio<14>>>;

    using microfortnights = duration<int64_t, std::ratio_multiply<fortnights::period, std::micro>>;

    using telecom = duration<int64_t, std::ratio<1, 8000>>; // 8 kHz

    using kiloseconds = duration<int64_t, std::kilo>;

    using exaseconds = duration<int8_t, std::exa>;

    using meter_per_light = duration<int64_t, std::ratio<1, 299'792'458>>;

    using kilometer_per_light = duration<int64_t, std::ratio<1000, 299'792'458>>;

    QTest::addColumn<ToStringFunction>("fn");

    QTest::addColumn<QString>("expected");

    auto addRow = [](const char *name, auto duration, const char *expected) {

        auto toString = [duration]() { return QDebug::toString(duration); };

        QTest::newRow(name) << ToStringFunction(toString) << expected;

};

    addRow("1as", attoseconds{1}, "1as");

    addRow("1fs", femtoseconds{1}, "1fs");

    addRow("1ps", picoseconds{1}, "1ps");

    addRow("0ns", 0ns, "0ns");

    addRow("1000ns", 1000ns, "1000ns");

    addRow("0us", 0us, "0us");

    addRow("0ms", 0ms, "0ms");

    addRow("1cs", centiseconds{1}, "1cs");

    addRow("2ds", deciseconds{2}, "2ds");

    addRow("-1s", -1s, "-1s");

    addRow("0s", 0s, "0s");

    addRow("1s", 1s, "1s");

    addRow("60s", 60s, "60s");

    addRow("1min", 1min, "1min");

    addRow("1h", 1h, "1h");

    addRow("1days", days{1}, "1d");

    addRow("365days", days{365}, "365d");

    addRow("1weeks", weeks{1}, "1wk");

    addRow("1years", years{1}, "1yr"); // 365.2425 days

    addRow("42years", years{42}, "42yr");

    addRow("1ks", kiloseconds{1}, "1[1000]s");

    addRow("2fortnights", fortnights{2}, "2[2]wk");

    addRow("1quadriennia", quadriennia{1}, "1[4]yr");

    addRow("1decades", decades{1}, "1[10]yr");

    addRow("1centuries", centuries{1}, "1[100]yr");

    addRow("1millennia", millennia{1}, "1[1000]yr");

#if defined(Q_OS_LINUX) || defined(Q_OS_DARWIN) || defined(__GLIBC__)

    // some OSes print the exponent differently

    addRow("1Es", exaseconds{1}, "1[1e+18]s");

    addRow("13gigayears", gigayears{13}, "13[1e+09]yr");

#endif

    // months are one twelfth of a Gregorian year, not 30 days

    addRow("1months", months{1}, "1[2629746]s");

    // weird units

    addRow("2microfortnights", microfortnights{2}, "2[756/625]s");

    addRow("1telecom", telecom{1}, "1[1/8000]s");

    addRow("10m/c", meter_per_light{10}, "10[1/299792458]s");

    addRow("10km/c", kilometer_per_light{10}, "10[500/149896229]s");

    // real floting point

    using fpsec = duration<double>;

    using fpmsec = duration<double, std::milli>;

    using fpnsec = duration<double, std::nano>;

    addRow("1.0s", fpsec{1}, "1s");

    addRow("1.5s", fpsec{1.5}, "1.5s");

    addRow("1.0ms", fpmsec{1}, "1ms");

    addRow("1.5ms", fpmsec{1.5}, "1.5ms");

    addRow("1.0ns", fpnsec{1}, "1ns");

    addRow("1.5ns", fpnsec{1.5}, "1.5ns");

    // and some precision setting too

    QTest::newRow("1.00000ns")

            << ToStringFunction([]() {

        QString buffer;

        QDebug d(&buffer);

        d.nospace() << qSetRealNumberPrecision(5) << Qt::fixed << fpnsec{1};

        return buffer;

    }) << "1.00000ns";

void tst_QDebug::qDebugStdChrono() const

    QFETCH(ToStringFunction, fn);

    QFETCH(QString, expected);

    QCOMPARE(fn(), expected);

void tst_QDebug::qDebugStdOptional() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        std::optional<QByteArray> notSet = std::nullopt;

        std::optional<QByteArray> set("foo");

        auto no = std::nullopt;

        QDebug d = qDebug();

        d << notSet << set << no;

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 4; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("nullopt std::optional(\"foo\") nullopt"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

    /* simpler tests from now on */

    // const

    qDebug() << std::optional<const int>(42) << std::optional<const int>(std::nullopt);

    QCOMPARE(s_msg, R"(std::optional(42) nullopt)"_L1);

    // nested

        auto d = qDebug();

        // the constructors would do the wrong thing (convert payload types), so use emplace()

        std::optional<std::optional<int>> opt;

        d << opt;

        opt.emplace();

        d << opt;

        *opt = 42;

        d << opt;

    QCOMPARE(s_msg, R"(nullopt std::optional(nullopt) std::optional(std::optional(42)))"_L1);

void tst_QDebug::qDebugStdOrdering() const

    QLatin1StringView file, function;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d << Qt::partial_ordering::less

          << Qt::partial_ordering::unordered

          << Qt::weak_ordering::greater

          << Qt::strong_ordering::equal;

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = QLatin1StringView(__FILE__);

    function = QLatin1StringView(Q_FUNC_INFO);

#endif

    const auto cmpStr = "Qt::partial_ordering::lessQt::partial_ordering::unorderedQt::weak_ordering::greaterQt::strong_ordering::equal"_L1;

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, cmpStr);

#ifdef __cpp_lib_three_way_comparison

    qDebug() << std::partial_ordering::less

             << std::partial_ordering::unordered

             << std::weak_ordering::greater

             << std::strong_ordering::equal;

    const auto stdStr = "std::partial_ordering::lessstd::partial_ordering::unorderedstd::weak_ordering::greaterstd::strong_ordering::equal"_L1;

    QCOMPARE(s_msg, stdStr);

#endif

    QCOMPARE(QLatin1StringView(s_file), file);

    QCOMPARE(QLatin1StringView(s_function), function);

void tst_QDebug::textStreamModifiers() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

    { qDebug() << Qt::hex << short(0xf) << int(0xf) << unsigned(0xf) << long(0xf) << qint64(0xf) << quint64(0xf); }

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 2; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("f f f f f f"));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

void tst_QDebug::resetFormat() const

    QString file, function;

    int line = 0;

    MessageHandlerSetter mhs(myMessageHandler);

        QDebug d = qDebug();

        d.nospace().noquote() << Qt::hex <<  int(0xf);

        d.resetFormat() << int(0xf) << QStringLiteral("foo");

#ifndef QT_NO_MESSAGELOGCONTEXT

    file = __FILE__; line = __LINE__ - 5; function = Q_FUNC_INFO;

#endif

    QCOMPARE(s_msgType, QtDebugMsg);

    QCOMPARE(s_msg, QString::fromLatin1("f15 \"foo\""));

    QCOMPARE(QString::fromLatin1(s_file), file);

    QCOMPARE(s_line, line);

    QCOMPARE(QString::fromLatin1(s_function), function);

void tst_QDebug::defaultMessagehandler() const

    MessageHandlerSetter mhs(0); // set 0, should set default handler

    QtMessageHandler defaultMessageHandler1 = qInstallMessageHandler((QtMessageHandler)0); // set 0, should set and return default handler

    QVERIFY(defaultMessageHandler1);

    QtMessageHandler defaultMessageHandler2 = qInstallMessageHandler(myMessageHandler); // set myMessageHandler and return default handler

    bool same = (*defaultMessageHandler1 == *defaultMessageHandler2);

    QVERIFY(same);

    QtMessageHandler messageHandler = qInstallMessageHandler((QtMessageHandler)0); // set 0, should set default and return myMessageHandler

    same = (*messageHandler == *myMessageHandler);

    QVERIFY(same);

QMutex s_mutex;

QStringList s_messages;

QSemaphore s_sema;

static void threadSafeMessageHandler(QtMsgType type, const QMessageLogContext &context, const QString &msg)

    QMutexLocker lock(&s_mutex);

    s_messages.append(msg);

    Q_UNUSED(type);

    Q_UNUSED(context);

static void doDebug() // called in each thread

    s_sema.acquire();

    qDebug() << "doDebug";

void tst_QDebug::threadSafety() const

#ifdef Q_OS_WASM

    QSKIP("threadSafety does not run on wasm");

#else

    s_messages = {};

    MessageHandlerSetter mhs(threadSafeMessageHandler);

    const int numThreads = 10;

    QThreadPool::globalInstance()->setMaxThreadCount(numThreads);

    QFutureSynchronizer<void> sync;

    for (int i = 0; i < numThreads; ++i) {

        sync.addFuture(QtConcurrent::run(&doDebug));

    s_sema.release(numThreads);

    sync.waitForFinished();

    QMutexLocker lock(&s_mutex);

    QCOMPARE(s_messages.size(), numThreads);

    for (int i = 0; i < numThreads; ++i) {

        QCOMPARE(s_messages.at(i), QStringLiteral("doDebug"));

#endif

void tst_QDebug::toString() const

    // By reference.

        MyPoint point(3, 4);

        QString expectedString;

        QDebug stream(&expectedString);

        stream.nospace() << point;

        QCOMPARE(QDebug::toString(point), expectedString);

    // By pointer.

        QObject qobject;

        qobject.setObjectName("test");

        QString expectedString;

        QDebug stream(&expectedString);

        stream.nospace() << &qobject;

        QCOMPARE(QDebug::toString(&qobject), expectedString);

    // Overloaded operator&

        struct TypeWithAddressOf

            int* operator&() const { return nullptr; }

            operator QByteArray() const { return "test"; }

};

        TypeWithAddressOf object;

        QString expectedString {"\"test\""};

        QCOMPARE(QDebug::toString(object), expectedString);

void tst_QDebug::toBytes() const

    // By reference.

        MyPoint point(3, 4);

        QString expected;

        QDebug stream(&expected);

        stream.nospace() << point;

        QCOMPARE(QDebug::toBytes(point), expected);

    // By pointer.

        QObject qobject;

        qobject.setObjectName("test");

        QString expected;

        QDebug stream(&expected);

        stream.nospace() << &qobject;

        QCOMPARE(QDebug::toBytes(&qobject), expected);

    // Overloaded operator&

        struct TypeWithAddressOf

            int *operator&() const { return nullptr; }

            operator QByteArray() const { return "test"; }

};

        TypeWithAddressOf object;

        QString expected{ "\"test\"" };

        QCOMPARE(QDebug::toBytes(object), expected);

void tst_QDebug::noQVariantEndlessRecursion() const

    ConvertsToQVariant conv;

    QVariant var = QVariant::fromValue(conv);

    QTest::ignoreMessage(QtDebugMsg, "QVariant(ConvertsToQVariant, )");

    qDebug() << var;

#if defined(Q_OS_DARWIN)

@interface MyObjcClass : NSObject

@end

@implementation MyObjcClass : NSObject

- (NSString *)description

    return @"MyObjcClass is the best";

@end

void tst_QDebug::objcInCppMode_data() const

    QTest::addColumn<objc_object *>("object");

    QTest::addColumn<QString>("message");

    QTest::newRow("nil") << static_cast<objc_object*>(nullptr) << QString::fromLatin1("(null)");

    // Not an NSObject subclass

    auto *nsproxy = reinterpret_cast<objc_object *>(class_createInstance(objc_getClass("NSProxy"), 0));

    QTest::newRow("NSProxy") << nsproxy << QString::fromLatin1("<NSProxy: 0x%1>").arg(uintptr_t(nsproxy), 1, 16);

    // Plain NSObject

    auto *nsobject = reinterpret_cast<objc_object *>(class_createInstance(objc_getClass("NSObject"), 0));

    QTest::newRow("NSObject") << nsobject << QString::fromLatin1("<NSObject: 0x%1>").arg(uintptr_t(nsobject), 1, 16);

    auto str = QString::fromLatin1("foo");

    QTest::newRow("NSString") << reinterpret_cast<objc_object*>(str.toNSString()) << str;

    // Custom debug description

    QTest::newRow("MyObjcClass") << reinterpret_cast<objc_object*>([[MyObjcClass alloc] init])

                                 << QString::fromLatin1("MyObjcClass is the best");

void tst_QDebug::objcInCppMode() const

    QFETCH(objc_object *, object);

    QFETCH(QString, message);

    MessageHandlerSetter mhs(myMessageHandler);

    { qDebug() << object; }

    QCOMPARE(s_msg, message);

void tst_QDebug::objcInObjcMode_data() const

    objcInCppMode_data();

void tst_QDebug::objcInObjcMode() const

    QFETCH(objc_object *, object);

    QFETCH(QString, message);

    MessageHandlerSetter mhs(myMessageHandler);

    { qDebug() << static_cast<id>(object); }

    QCOMPARE(s_msg, message);

#endif

// Should compile: instentiation of unrelated operator<< should not cause cause compilation

// error in QDebug operators (QTBUG-47375)

class TestClassA {};

class TestClassB {};

template <typename T>

TestClassA& operator<< (TestClassA& s, T&) { return s; };

template<> TestClassA& operator<< <TestClassB>(TestClassA& s, TestClassB& l);

QTEST_MAIN(tst_QDebug);

#include "tst_qdebug.moc"