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Diffstat (limited to 'tests/auto/qobject/signalbug.cpp')
| -rw-r--r-- | tests/auto/qobject/signalbug.cpp | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/tests/auto/qobject/signalbug.cpp b/tests/auto/qobject/signalbug.cpp new file mode 100644 index 0000000..dd4e070 --- /dev/null +++ b/tests/auto/qobject/signalbug.cpp @@ -0,0 +1,151 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the test suite of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, 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 1.0, 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. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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()"); + Q_ASSERT (::Step == 2 || ::Step == 4); + + 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()"); + Q_ASSERT (::Step == 5 || ::Step == 6); + + 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()"); + Q_ASSERT (::Step == 1 || ::Step == 3); + + 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; +} + + |