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****************************************************************************/

#include <QtTest/QtTest>

#include <QCoreApplication>

#include <QMutexLocker>

#include <QSemaphore>

#include <QThread>

//TESTED_CLASS=

//TESTED_FILES=

class tst_QMutexLockerThread : public QThread

{

public:

    QMutex mutex;

    QSemaphore semaphore, testSemaphore;

    void waitForTest()

    {

        semaphore.release();

        testSemaphore.acquire();

    }

    tst_QMutexLockerThread()

        : mutex(QMutex::Recursive)

    {

    }

};

class tst_QMutexLocker : public QObject

{

    Q_OBJECT

public:

    tst_QMutexLocker();

    ~tst_QMutexLocker();

    tst_QMutexLockerThread *thread;

    void waitForThread()

    {

        thread->semaphore.acquire();

    }

    void releaseThread()

    {

        thread->testSemaphore.release();

    }

private slots:

    void scopeTest();

    void unlockAndRelockTest();

    void lockerStateTest();

};

tst_QMutexLocker::tst_QMutexLocker()

{

}

tst_QMutexLocker::~tst_QMutexLocker()

{

}

void tst_QMutexLocker::scopeTest()

{

    class ScopeTestThread : public tst_QMutexLockerThread

    {

    public:

        void run()

        {

            waitForTest();

            {

                QMutexLocker locker(&mutex);

                waitForTest();

            }

            waitForTest();

        }

    };

    thread = new ScopeTestThread;

    thread->start();

    waitForThread();

    // mutex should be unlocked before entering the scope that creates the QMutexLocker

    QVERIFY(thread->mutex.tryLock());

    thread->mutex.unlock();

    releaseThread();

    waitForThread();

    // mutex should be locked by the QMutexLocker

    QVERIFY(!thread->mutex.tryLock());

    releaseThread();

    waitForThread();

    // mutex should be unlocked when the QMutexLocker goes out of scope

    QVERIFY(thread->mutex.tryLock());

    thread->mutex.unlock();

    releaseThread();

    QVERIFY(thread->wait());

    delete thread;

    thread = 0;

}

void tst_QMutexLocker::unlockAndRelockTest()

{

    class UnlockAndRelockThread : public tst_QMutexLockerThread

    {

    public:

        void run()

        {

            QMutexLocker locker(&mutex);

            waitForTest();

            locker.unlock();

            waitForTest();

            locker.relock();

            waitForTest();

        }

    };

    thread = new UnlockAndRelockThread;

    thread->start();

    waitForThread();

    // mutex should be locked by the QMutexLocker

    QVERIFY(!thread->mutex.tryLock());

    releaseThread();

    waitForThread();

    // mutex has been explicitly unlocked via QMutexLocker

    QVERIFY(thread->mutex.tryLock());

    thread->mutex.unlock();

    releaseThread();

    waitForThread();

    // mutex has been explicity relocked via QMutexLocker

    QVERIFY(!thread->mutex.tryLock());

    releaseThread();

    QVERIFY(thread->wait());

    delete thread;

    thread = 0;

}

void tst_QMutexLocker::lockerStateTest()

{

    class LockerStateThread : public tst_QMutexLockerThread

    {

    public:

        void run()

        {

            {

                QMutexLocker locker(&mutex);

                locker.relock();

                locker.unlock();

                waitForTest();

            }

            waitForTest();

        }

    };

    thread = new LockerStateThread;

    thread->start();

    waitForThread();

    // even though we relock() after creating the QMutexLocker, it shouldn't lock the mutex more than once

    QVERIFY(thread->mutex.tryLock());

    thread->mutex.unlock();

    releaseThread();

    waitForThread();

    // if we call QMutexLocker::unlock(), its destructor should do nothing

    QVERIFY(thread->mutex.tryLock());

    thread->mutex.unlock();

    releaseThread();

    QVERIFY(thread->wait());

    delete thread;

    thread = 0;

}

QTEST_MAIN(tst_QMutexLocker)

#include "tst_qmutexlocker.moc"