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#include <QtDBus/QDBusServiceWatcher>
#include <QtDBus>
#include <QtTest>

class tst_QDBusServiceWatcher: public QObject
{
    Q_OBJECT
    QString serviceName;
    int testCounter;
public:
    tst_QDBusServiceWatcher();

private slots:
    void initTestCase();
    void init();

    void watchForCreation();
    void watchForDisappearance();
    void watchForOwnerChange();
    void modeChange();
};

tst_QDBusServiceWatcher::tst_QDBusServiceWatcher()
    : testCounter(0)
{
}

void tst_QDBusServiceWatcher::initTestCase()
{
    QDBusConnection con = QDBusConnection::sessionBus();
    QVERIFY(con.isConnected());
}

void tst_QDBusServiceWatcher::init()
{
    // change the service name from test to test
    serviceName = "com.example.TestService" + QString::number(testCounter++);
}

void tst_QDBusServiceWatcher::watchForCreation()
{
    QDBusConnection con = QDBusConnection::sessionBus();
    QVERIFY(con.isConnected());

    QDBusServiceWatcher watcher(serviceName, con, QDBusServiceWatcher::WatchForRegistration);

    QSignalSpy spyR(&watcher, SIGNAL(serviceRegistered(QString)));
    QSignalSpy spyU(&watcher, SIGNAL(serviceUnregistered(QString)));
    QSignalSpy spyO(&watcher, SIGNAL(serviceOwnerChanged(QString,QString,QString)));
    QTestEventLoop::instance().connect(&watcher, SIGNAL(serviceRegistered(QString)), SLOT(exitLoop()));

    // register a name
    QVERIFY(con.registerService(serviceName));

    QTestEventLoop::instance().enterLoop(1);
    QVERIFY(!QTestEventLoop::instance().timeout());

    QCOMPARE(spyR.count(), 1);
    QCOMPARE(spyR.at(0).at(0).toString(), serviceName);

    QCOMPARE(spyU.count(), 0);

    QCOMPARE(spyO.count(), 1);
    QCOMPARE(spyO.at(0).at(0).toString(), serviceName);
    QVERIFY(spyO.at(0).at(1).toString().isEmpty());
    QCOMPARE(spyO.at(0).at(2).toString(), con.baseService());

    spyR.clear();
    spyU.clear();
    spyO.clear();

    // unregister it:
    con.unregisterService(serviceName);

    // and register again
    QVERIFY(con.registerService(serviceName));

    QTestEventLoop::instance().enterLoop(1);
    QVERIFY(!QTestEventLoop::instance().timeout());

    QCOMPARE(spyR.count(), 1);
    QCOMPARE(spyR.at(0).at(0).toString(), serviceName);

    QCOMPARE(spyU.count(), 0);

    QCOMPARE(spyO.count(), 1);
    QCOMPARE(spyO.at(0).at(0).toString(), serviceName);
    QVERIFY(spyO.at(0).at(1).toString().isEmpty());
    QCOMPARE(spyO.at(0).at(2).toString(), con.baseService());
}

void tst_QDBusServiceWatcher::watchForDisappearance()
{
    QDBusConnection con = QDBusConnection::sessionBus();
    QVERIFY(con.isConnected());

    QDBusServiceWatcher watcher(serviceName, con, QDBusServiceWatcher::WatchForUnregistration);
    watcher.setObjectName("watcher for disappearance");

    QSignalSpy spyR(&watcher, SIGNAL(serviceRegistered(QString)));
    QSignalSpy spyU(&watcher, SIGNAL(serviceUnregistered(QString)));
    QSignalSpy spyO(&watcher, SIGNAL(serviceOwnerChanged(QString,QString,QString)));
    QTestEventLoop::instance().connect(&watcher, SIGNAL(serviceUnregistered(QString)), SLOT(exitLoop()));

    // register a name
    QVERIFY(con.registerService(serviceName));

    // unregister it:
    con.unregisterService(serviceName);

    QTestEventLoop::instance().enterLoop(1);
    QVERIFY(!QTestEventLoop::instance().timeout());

    QCOMPARE(spyR.count(), 0);

    QCOMPARE(spyU.count(), 1);
    QCOMPARE(spyU.at(0).at(0).toString(), serviceName);

    QCOMPARE(spyO.count(), 1);
    QCOMPARE(spyO.at(0).at(0).toString(), serviceName);
    QCOMPARE(spyO.at(0).at(1).toString(), con.baseService());
    QVERIFY(spyO.at(0).at(2).toString().isEmpty());
}

void tst_QDBusServiceWatcher::watchForOwnerChange()
{
    QDBusConnection con = QDBusConnection::sessionBus();
    QVERIFY(con.isConnected());

    QDBusServiceWatcher watcher(serviceName, con, QDBusServiceWatcher::WatchForOwnerChange);

    QSignalSpy spyR(&watcher, SIGNAL(serviceRegistered(QString)));
    QSignalSpy spyU(&watcher, SIGNAL(serviceUnregistered(QString)));
    QSignalSpy spyO(&watcher, SIGNAL(serviceOwnerChanged(QString,QString,QString)));
    QTestEventLoop::instance().connect(&watcher, SIGNAL(serviceRegistered(QString)), SLOT(exitLoop()));

    // register a name
    QVERIFY(con.registerService(serviceName));

    QTestEventLoop::instance().enterLoop(1);
    QVERIFY(!QTestEventLoop::instance().timeout());

    QCOMPARE(spyR.count(), 1);
    QCOMPARE(spyR.at(0).at(0).toString(), serviceName);

    QCOMPARE(spyU.count(), 0);

    QCOMPARE(spyO.count(), 1);
    QCOMPARE(spyO.at(0).at(0).toString(), serviceName);
    QVERIFY(spyO.at(0).at(1).toString().isEmpty());
    QCOMPARE(spyO.at(0).at(2).toString(), con.baseService());

    spyR.clear();
    spyU.clear();
    spyO.clear();

    // unregister it:
    con.unregisterService(serviceName);

    // and register again
    QVERIFY(con.registerService(serviceName));

    QTestEventLoop::instance().enterLoop(1);
    QVERIFY(!QTestEventLoop::instance().timeout());

    QCOMPARE(spyR.count(), 1);
    QCOMPARE(spyR.at(0).at(0).toString(), serviceName);

    QCOMPARE(spyU.count(), 1);
    QCOMPARE(spyU.at(0).at(0).toString(), serviceName);

    QCOMPARE(spyO.count(), 2);
    QCOMPARE(spyO.at(0).at(0).toString(), serviceName);
    QCOMPARE(spyO.at(0).at(1).toString(), con.baseService());
    QVERIFY(spyO.at(0).at(2).toString().isEmpty());
    QCOMPARE(spyO.at(1).at(0).toString(), serviceName);
    QVERIFY(spyO.at(1).at(1).toString().isEmpty());
    QCOMPARE(spyO.at(1).at(2).toString(), con.baseService());
}

void tst_QDBusServiceWatcher::modeChange()
{
    QDBusConnection con = QDBusConnection::sessionBus();
    QVERIFY(con.isConnected());

    QDBusServiceWatcher watcher(serviceName, con, QDBusServiceWatcher::WatchForRegistration);

    QSignalSpy spyR(&watcher, SIGNAL(serviceRegistered(QString)));
    QSignalSpy spyU(&watcher, SIGNAL(serviceUnregistered(QString)));
    QSignalSpy spyO(&watcher, SIGNAL(serviceOwnerChanged(QString,QString,QString)));
    QTestEventLoop::instance().connect(&watcher, SIGNAL(serviceRegistered(QString)), SLOT(exitLoop()));

    // register a name
    QVERIFY(con.registerService(serviceName));

    QTestEventLoop::instance().enterLoop(1);
    QVERIFY(!QTestEventLoop::instance().timeout());

    QCOMPARE(spyR.count(), 1);
    QCOMPARE(spyR.at(0).at(0).toString(), serviceName);

    QCOMPARE(spyU.count(), 0);

    QCOMPARE(spyO.count(), 1);
    QCOMPARE(spyO.at(0).at(0).toString(), serviceName);
    QVERIFY(spyO.at(0).at(1).toString().isEmpty());
    QCOMPARE(spyO.at(0).at(2).toString(), con.baseService());

    spyR.clear();
    spyU.clear();
    spyO.clear();

    watcher.setWatchMode(QDBusServiceWatcher::WatchForUnregistration);

    // unregister it:
    con.unregisterService(serviceName);

    QTestEventLoop::instance().connect(&watcher, SIGNAL(serviceUnregistered(QString)), SLOT(exitLoop()));
    QTestEventLoop::instance().enterLoop(1);
    QVERIFY(!QTestEventLoop::instance().timeout());

    QCOMPARE(spyR.count(), 0);

    QCOMPARE(spyU.count(), 1);
    QCOMPARE(spyU.at(0).at(0).toString(), serviceName);

    QCOMPARE(spyO.count(), 1);
    QCOMPARE(spyO.at(0).at(0).toString(), serviceName);
    QCOMPARE(spyO.at(0).at(1).toString(), con.baseService());
    QVERIFY(spyO.at(0).at(2).toString().isEmpty());
}

QTEST_MAIN(tst_QDBusServiceWatcher)
#include "tst_qdbusservicewatcher.moc"