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#include <qmallocpool_p.h>

#include <QtTest/QTest>

#include <QDebug>

QTM_USE_NAMESPACE

class tst_QMallocPool : public QObject

{

    Q_OBJECT

private slots:

    void initTestCase();

    void cleanupTestCase();

    void testConstructor();

    void testShared();

};

void tst_QMallocPool::initTestCase()

{

}

void tst_QMallocPool::cleanupTestCase()

{

}

void tst_QMallocPool::testConstructor()

{

    {

        QMallocPool invalidPool;

        QVERIFY(!invalidPool.isValid());

    }

    {

        QMallocPool invalidPool(0, 0, QMallocPool::NewShared);

        QVERIFY(!invalidPool.isValid());

    }

    {

        QMallocPool invalidPool(0, 0, QMallocPool::Shared);

        QVERIFY(!invalidPool.isValid());

    }

    {

        const unsigned int poolLength = 1024 * 1024;

        char *poolBase = new char[poolLength];

        for (unsigned int i = 0; i < poolLength; ++i)

            poolBase[i] = 'X';

        QMallocPool pool(poolBase, poolLength, QMallocPool::Owned);

        QVERIFY(pool.isValid());

        void *alloc;

        // test malloc

        alloc = pool.malloc(1024);

        QVERIFY(alloc != 0);

        QVERIFY(pool.size_of(alloc) >= 1024);

        QVERIFY(pool.memoryStatistics().inuseBytes >= 1024);

        pool.free(alloc);

        QVERIFY(pool.memoryStatistics().inuseBytes == 0);

        // test malloc of poolLength, should fail.

        alloc = pool.malloc(poolLength);

        QVERIFY(alloc == 0);

        QVERIFY(pool.memoryStatistics().inuseBytes == 0);

        // test malloc of poolLength + 1, should fail.

        alloc = pool.malloc(poolLength + 1);

        QVERIFY(alloc == 0);

        QVERIFY(pool.memoryStatistics().inuseBytes == 0);

        // test calloc

        alloc = pool.calloc(1024, sizeof(char));

        QVERIFY(alloc != 0);

        QVERIFY(pool.size_of(alloc) >= 1024);

        QVERIFY(pool.memoryStatistics().inuseBytes >= 1024);

        for (int i = 0; i < 1024; ++i)

            QVERIFY(reinterpret_cast<char *>(alloc)[i] == '\0');

        pool.free(alloc);

        QVERIFY(pool.memoryStatistics().inuseBytes == 0);

        // test realloc

        alloc = pool.malloc(1024);

        QVERIFY(alloc != 0);

        QVERIFY(pool.size_of(alloc) >= 1024);

        QVERIFY(pool.memoryStatistics().inuseBytes >= 1024);

        alloc = pool.realloc(alloc, 2048);

        QVERIFY(alloc != 0);

        QVERIFY(pool.size_of(alloc) >= 2048);

        QVERIFY(pool.memoryStatistics().inuseBytes >= 2048);

        pool.free(alloc);

        QVERIFY(pool.memoryStatistics().inuseBytes == 0);

        delete[] poolBase;

    }

}

void tst_QMallocPool::testShared()

{

    const unsigned int poolLength = 1024 * 1024;

    char *poolBase = new char[poolLength];

    for (unsigned int i = 0; i < poolLength; ++i)

        poolBase[i] = 'X';

    QMallocPool pool(poolBase, poolLength, QMallocPool::NewShared);

    QMallocPool pool2(poolBase, poolLength, QMallocPool::Shared);

    QVERIFY(pool.isValid());

    QVERIFY(pool2.isValid());

    void *alloc;

    // test malloc

    alloc = pool.malloc(1024);

    QVERIFY(alloc != 0);

    QVERIFY(pool.size_of(alloc) >= 1024);

    QVERIFY(pool.size_of(alloc) == pool2.size_of(alloc));

    pool.free(alloc);

    // test malloc of poolLength, should fail.

    alloc = pool.malloc(poolLength);

    QVERIFY(alloc == 0);

    // test malloc of poolLength + 1, should fail.

    alloc = pool.malloc(poolLength + 1);

    QVERIFY(alloc == 0);

    // test calloc

    alloc = pool.calloc(1024, sizeof(char));

    QVERIFY(alloc != 0);

    QVERIFY(pool.size_of(alloc) >= 1024);

    QVERIFY(pool.size_of(alloc) == pool2.size_of(alloc));

    for (int i = 0; i < 1024; ++i)

        QVERIFY(reinterpret_cast<char *>(alloc)[i] == '\0');

    pool.free(alloc);

    // test realloc

    alloc = pool.malloc(1024);

    QVERIFY(alloc != 0);

    QVERIFY(pool.size_of(alloc) >= 1024);

    QVERIFY(pool.size_of(alloc) == pool2.size_of(alloc));

    alloc = pool.realloc(alloc, 2048);

    QVERIFY(alloc != 0);

    QVERIFY(pool.size_of(alloc) >= 2048);

    QVERIFY(pool.size_of(alloc) == pool2.size_of(alloc));

    pool.free(alloc);

    delete[] poolBase;

}

QTEST_MAIN(tst_QMallocPool)

#include "tst_qmallocpool.moc"