diff options
Diffstat (limited to 'tests/auto/corelib/kernel/qobject/signalbug.cpp')
-rw-r--r-- | tests/auto/corelib/kernel/qobject/signalbug.cpp | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/tests/auto/corelib/kernel/qobject/signalbug.cpp b/tests/auto/corelib/kernel/qobject/signalbug.cpp new file mode 100644 index 0000000000..f81de47e2d --- /dev/null +++ b/tests/auto/corelib/kernel/qobject/signalbug.cpp @@ -0,0 +1,154 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the test suite of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "signalbug.h" + +#include <qcoreapplication.h> +#include <qstring.h> + +#include <stdio.h> + +static int Step = 0; +Sender RandomSender (0, 0); + + +void TRACE (int step, const char *name) +{ + for (int t = 0; t < step - 1; t++) + fprintf (stderr, "\t"); + fprintf (stderr, "Step %d: %s\n", step, name); + return; +} + + +Receiver::Receiver () + : QObject () +{ +} + +void Receiver::received () +{ + ::Step++; + const int stepCopy = ::Step; + TRACE (stepCopy, "Receiver::received()"); + if (::Step != 2 && ::Step != 4) + qFatal("%s: Incorrect Step: %d (should be 2 or 4)", Q_FUNC_INFO, ::Step); + + if (::Step == 2) + s->fire (); + + fprintf (stderr, "Receiver<%s>::received() sender=%s\n", + (const char *) objectName ().toAscii (), sender ()->metaObject()->className()); + + TRACE (stepCopy, "ends Receiver::received()"); +} + + +Disconnector::Disconnector () + : QObject () +{ +} + +void Disconnector::received () +{ + ::Step++; + const int stepCopy = ::Step; + TRACE (stepCopy, "Disconnector::received()"); + if (::Step != 5 && ::Step != 6) + qFatal("%s: Incorrect Step: %d (should be 5 or 6)", Q_FUNC_INFO, ::Step); + + fprintf (stderr, "Disconnector<%s>::received() sender=%s\n", + (const char *) objectName ().toAscii (), sender ()->metaObject()->className()); + if (sender () == 0) + fprintf (stderr, "WE SHOULD NOT BE RECEIVING THIS SIGNAL\n"); + + if (::Step == 5) + { + disconnect (s, SIGNAL (fired ()), s->d, SLOT (received ())); + + connect (&RandomSender, SIGNAL (fired ()), s->d, SLOT (received ())); + } + + TRACE (stepCopy, "ends Disconnector::received()"); +} + + +Sender::Sender (Receiver *r, Disconnector *d) + : QObject () +{ + this->r = r; this->d = d; + if (r) + connect (this, SIGNAL (fired ()), r, SLOT (received ())); + if (d) + connect (this, SIGNAL (fired ()), d, SLOT (received ())); +}; + +void Sender::fire () +{ + ::Step++; + const int stepCopy = ::Step; + TRACE (stepCopy, "Sender::fire()"); + if (::Step != 1 && ::Step != 3) + qFatal("%s: Incorrect Step: %d (should be 1 or 3)", Q_FUNC_INFO, ::Step); + + emit fired (); + TRACE (stepCopy, "ends Sender::fire()"); +} + + +int main (int argc, char *argv []) +{ + QCoreApplication app (argc, argv); + + Receiver r; + Disconnector d; + Sender s (&r, &d); + + r.s = &s; + d.s = &s; + + + ::Step = 0; + s.fire (); + return 0; +} + + |