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#include <qtest.h>
#include <QtCore/qmetatype.h>

class tst_QMetaType : public QObject
{
    Q_OBJECT

public:
    tst_QMetaType();
    virtual ~tst_QMetaType();

private slots:
    void typeBuiltin_data();
    void typeBuiltin();
    void typeBuiltinNotNormalized_data();
    void typeBuiltinNotNormalized();
    void typeCustom();
    void typeCustomNotNormalized();
    void typeNotRegistered();
    void typeNotRegisteredNotNormalized();

    void typeNameBuiltin_data();
    void typeNameBuiltin();
    void typeNameCustom();
    void typeNameNotRegistered();

    void isRegisteredBuiltin_data();
    void isRegisteredBuiltin();
    void isRegisteredCustom();
    void isRegisteredNotRegistered();

    void constructCoreType_data();
    void constructCoreType();
    void constructCoreTypeStaticLess_data();
    void constructCoreTypeStaticLess();
    void constructCoreTypeCopy_data();
    void constructCoreTypeCopy();

    void constructCustomType_data();
    void constructCustomType();

    void constructInPlace_data();
    void constructInPlace();
    void constructInPlaceCopy_data();
    void constructInPlaceCopy();
    void constructInPlaceCopyStaticLess_data();
    void constructInPlaceCopyStaticLess();
};

tst_QMetaType::tst_QMetaType()
{
}

tst_QMetaType::~tst_QMetaType()
{
}

struct BigClass
{
    double n,i,e,r,o,b;
};
Q_DECLARE_METATYPE(BigClass);

void tst_QMetaType::typeBuiltin_data()
{
    QTest::addColumn<QByteArray>("typeName");
    for (int i = 0; i < QMetaType::User; ++i) {
        const char *name = QMetaType::typeName(i);
        if (name)
            QTest::newRow(name) << QByteArray(name);
    }
}

void tst_QMetaType::typeBuiltin()
{
    QFETCH(QByteArray, typeName);
    const char *nm = typeName.constData();
    QBENCHMARK {
        for (int i = 0; i < 100000; ++i)
            QMetaType::type(nm);
    }
}

void tst_QMetaType::typeBuiltinNotNormalized_data()
{
    QTest::addColumn<QByteArray>("typeName");
    for (int i = 0; i < QMetaType::User; ++i) {
        const char *name = QMetaType::typeName(i);
        if (name)
            QTest::newRow(name) << QByteArray(name).append(" ");
    }
}

void tst_QMetaType::typeBuiltinNotNormalized()
{
    QFETCH(QByteArray, typeName);
    const char *nm = typeName.constData();
    QBENCHMARK {
        for (int i = 0; i < 10000; ++i)
            QMetaType::type(nm);
    }
}

struct Foo { int i; };

void tst_QMetaType::typeCustom()
{
    qRegisterMetaType<Foo>("Foo");
    QBENCHMARK {
        for (int i = 0; i < 10000; ++i)
            QMetaType::type("Foo");
    }
}

void tst_QMetaType::typeCustomNotNormalized()
{
    qRegisterMetaType<Foo>("Foo");
    QBENCHMARK {
        for (int i = 0; i < 10000; ++i)
            QMetaType::type("Foo ");
    }
}

void tst_QMetaType::typeNotRegistered()
{
    Q_ASSERT(QMetaType::type("Bar") == 0);
    QBENCHMARK {
        for (int i = 0; i < 10000; ++i)
            QMetaType::type("Bar");
    }
}

void tst_QMetaType::typeNotRegisteredNotNormalized()
{
    Q_ASSERT(QMetaType::type("Bar") == 0);
    QBENCHMARK {
        for (int i = 0; i < 10000; ++i)
            QMetaType::type("Bar ");
    }
}

void tst_QMetaType::typeNameBuiltin_data()
{
    QTest::addColumn<int>("type");
    for (int i = 0; i < QMetaType::User; ++i) {
        const char *name = QMetaType::typeName(i);
        if (name)
            QTest::newRow(name) << i;
    }
}

void tst_QMetaType::typeNameBuiltin()
{
    QFETCH(int, type);
    QBENCHMARK {
        for (int i = 0; i < 500000; ++i)
            QMetaType::typeName(type);
    }
}

void tst_QMetaType::typeNameCustom()
{
    int type = qRegisterMetaType<Foo>("Foo");
    QBENCHMARK {
        for (int i = 0; i < 100000; ++i)
            QMetaType::typeName(type);
    }
}

void tst_QMetaType::typeNameNotRegistered()
{
    // We don't care much about this case, but test it anyway.
    Q_ASSERT(QMetaType::typeName(-1) == 0);
    QBENCHMARK {
        for (int i = 0; i < 500000; ++i)
            QMetaType::typeName(-1);
    }
}

void tst_QMetaType::isRegisteredBuiltin_data()
{
    typeNameBuiltin_data();
}

void tst_QMetaType::isRegisteredBuiltin()
{
    QFETCH(int, type);
    QBENCHMARK {
        for (int i = 0; i < 500000; ++i)
            QMetaType::isRegistered(type);
    }
}

void tst_QMetaType::isRegisteredCustom()
{
    int type = qRegisterMetaType<Foo>("Foo");
    QBENCHMARK {
        for (int i = 0; i < 100000; ++i)
            QMetaType::isRegistered(type);
    }
}

void tst_QMetaType::isRegisteredNotRegistered()
{
    Q_ASSERT(QMetaType::typeName(-1) == 0);
    QBENCHMARK {
        for (int i = 0; i < 100000; ++i)
            QMetaType::isRegistered(-1);
    }
}

void tst_QMetaType::constructCoreType_data()
{
    QTest::addColumn<int>("typeId");
    for (int i = QMetaType::FirstCoreType; i <= QMetaType::LastCoreType; ++i)
        QTest::newRow(QMetaType::typeName(i)) << i;
    // GUI types are tested in tst_QGuiMetaType.
}

// Tests how fast QMetaType can default-construct and destroy a Qt
// core type. The purpose of this benchmark is to measure the overhead
// of using type id-based creation compared to creating the type
// directly (i.e. "T *t = new T(); delete t;").
void tst_QMetaType::constructCoreType()
{
    QFETCH(int, typeId);
    QBENCHMARK {
        for (int i = 0; i < 100000; ++i) {
            void *data = QMetaType::create(typeId, (void *)0);
            QMetaType::destroy(typeId, data);
        }
    }
}

void tst_QMetaType::constructCoreTypeStaticLess_data()
{
    constructCoreType_data();
}

void tst_QMetaType::constructCoreTypeStaticLess()
{
    QFETCH(int, typeId);
    QBENCHMARK {
        QMetaType type(typeId);
        for (int i = 0; i < 100000; ++i) {
            void *data = type.create((void *)0);
            type.destroy(data);
        }
    }
}

void tst_QMetaType::constructCoreTypeCopy_data()
{
    constructCoreType_data();
}

// Tests how fast QMetaType can copy-construct and destroy a Qt core
// type. The purpose of this benchmark is to measure the overhead of
// using type id-based creation compared to creating the type directly
// (i.e. "T *t = new T(other); delete t;").
void tst_QMetaType::constructCoreTypeCopy()
{
    QFETCH(int, typeId);
    QVariant other(typeId, (void *)0);
    const void *copy = other.constData();
    QBENCHMARK {
        for (int i = 0; i < 100000; ++i) {
            void *data = QMetaType::create(typeId, copy);
            QMetaType::destroy(typeId, data);
        }
    }
}

void tst_QMetaType::constructCustomType_data()
{
    QTest::addColumn<int>("typeId");

    QTest::newRow("BigClass") << qMetaTypeId<BigClass>();
}

void tst_QMetaType::constructCustomType()
{
    QFETCH(int, typeId);
    QBENCHMARK {
        for (int i = 0; i < 100000; ++i) {
            void *data = QMetaType::create(typeId, (void *)0);
            QMetaType::destroy(typeId, data);
        }
    }
}

void tst_QMetaType::constructInPlace_data()
{
    constructCoreType_data();
    QTest::newRow("custom") << qMetaTypeId<BigClass>();
}

void tst_QMetaType::constructInPlace()
{
    QFETCH(int, typeId);
    int size = QMetaType::sizeOf(typeId);
    void *storage = qMallocAligned(size, 2 * sizeof(qlonglong));
    QCOMPARE(QMetaType::construct(typeId, storage, /*copy=*/0), storage);
    QMetaType::destruct(typeId, storage);
    QBENCHMARK {
        for (int i = 0; i < 100000; ++i) {
            QMetaType::construct(typeId, storage, /*copy=*/0);
            QMetaType::destruct(typeId, storage);
        }
    }
    qFreeAligned(storage);
}

void tst_QMetaType::constructInPlaceCopy_data()
{
    constructInPlace_data();
}

void tst_QMetaType::constructInPlaceCopy()
{
    QFETCH(int, typeId);
    int size = QMetaType::sizeOf(typeId);
    void *storage = qMallocAligned(size, 2 * sizeof(qlonglong));
    void *other = QMetaType::create(typeId);
    QCOMPARE(QMetaType::construct(typeId, storage, other), storage);
    QMetaType::destruct(typeId, storage);
    QBENCHMARK {
        for (int i = 0; i < 100000; ++i) {
            QMetaType::construct(typeId, storage, other);
            QMetaType::destruct(typeId, storage);
        }
    }
    QMetaType::destroy(typeId, other);
    qFreeAligned(storage);
}

void tst_QMetaType::constructInPlaceCopyStaticLess_data()
{
    constructInPlaceCopy_data();
}

void tst_QMetaType::constructInPlaceCopyStaticLess()
{
    QFETCH(int, typeId);
    int size = QMetaType::sizeOf(typeId);
    void *storage = qMallocAligned(size, 2 * sizeof(qlonglong));
    void *other = QMetaType::create(typeId);
    QCOMPARE(QMetaType::construct(typeId, storage, other), storage);
    QMetaType::destruct(typeId, storage);
    QBENCHMARK {
        QMetaType type(typeId);
        for (int i = 0; i < 100000; ++i) {
            type.construct(storage, other);
            type.destruct(storage);
        }
    }
    QMetaType::destroy(typeId, other);
    qFreeAligned(storage);
}

QTEST_MAIN(tst_QMetaType)
#include "tst_qmetatype.moc"
