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#include <QStringList>

#include <QFile>

#include <qtest.h>

class tst_QString: public QObject

{

    Q_OBJECT

private slots:

    void equals() const;

    void equals_data() const;

    void fromUtf8() const;

};

void tst_QString::equals() const

{

    QFETCH(QString, a);

    QFETCH(QString, b);

    QBENCHMARK {

        a == b;

    }

}

void tst_QString::equals_data() const

{

    static const struct {

        ushort data[80];

        int dummy;              // just to ensure 4-byte alignment

    } data = {

        {

            64, 64, 64, 64,  64, 64, 64, 64,

            64, 64, 64, 64,  64, 64, 64, 64, // 16

            64, 64, 64, 64,  64, 64, 64, 64,

            64, 64, 64, 64,  64, 64, 64, 64, // 32

            64, 64, 64, 64,  64, 64, 64, 64,

            64, 64, 64, 64,  64, 64, 64, 64, // 48

            64, 64, 64, 64,  64, 64, 64, 64,

            64, 64, 64, 64,  64, 64, 64, 64, // 64

            64, 64, 64, 64,  96, 96, 96, 96,

            64, 64, 96, 96,  96, 96, 96, 96  // 80

        }, 0

    };

    const QChar *ptr = reinterpret_cast<const QChar *>(data.data);

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

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

    QString base = QString::fromRawData(ptr, 64);

    QTest::newRow("different-length") << base << QString::fromRawData(ptr, 4);

    QTest::newRow("same-string") << base << base;

    QTest::newRow("same-data") << base << QString::fromRawData(ptr, 64);

    // try to avoid crossing a cache line (that is, at ptr[64])

    QTest::newRow("aligned-aligned-4n")

            << QString::fromRawData(ptr, 60) << QString::fromRawData(ptr + 2, 60);

    QTest::newRow("aligned-unaligned-4n")

            << QString::fromRawData(ptr, 60) << QString::fromRawData(ptr + 1, 60);

    QTest::newRow("unaligned-unaligned-4n")

            << QString::fromRawData(ptr + 1, 60) << QString::fromRawData(ptr + 3, 60);

    QTest::newRow("aligned-aligned-4n+1")

            << QString::fromRawData(ptr, 61) << QString::fromRawData(ptr + 2, 61);

    QTest::newRow("aligned-unaligned-4n+1")

            << QString::fromRawData(ptr, 61) << QString::fromRawData(ptr + 1, 61);

    QTest::newRow("unaligned-unaligned-4n+1")

            << QString::fromRawData(ptr + 1, 61) << QString::fromRawData(ptr + 3, 61);

    QTest::newRow("aligned-aligned-4n-1")

            << QString::fromRawData(ptr, 59) << QString::fromRawData(ptr + 2, 59);

    QTest::newRow("aligned-unaligned-4n-1")

            << QString::fromRawData(ptr, 59) << QString::fromRawData(ptr + 1, 59);

    QTest::newRow("unaligned-unaligned-4n-1")

            << QString::fromRawData(ptr + 1, 59) << QString::fromRawData(ptr + 3, 59);

    QTest::newRow("aligned-aligned-2n")

            << QString::fromRawData(ptr, 58) << QString::fromRawData(ptr + 2, 58);

    QTest::newRow("aligned-unaligned-2n")

            << QString::fromRawData(ptr, 58) << QString::fromRawData(ptr + 1, 58);

    QTest::newRow("unaligned-unaligned-2n")

            << QString::fromRawData(ptr + 1, 58) << QString::fromRawData(ptr + 3, 58);

}

void tst_QString::fromUtf8() const

{

    QFile file(SRCDIR "utf-8.txt");

    if (!file.open(QFile::ReadOnly)) {

        qFatal("Cannot open input file");

        return;

    }

    QByteArray data = file.readAll();

    const char *d = data.constData();

    int size = data.size();

    QBENCHMARK {

        QString::fromUtf8(d, size);

    }

}

QTEST_MAIN(tst_QString)

#include "main.moc"