QProcess.tests: adding test for channel forwarding

This tests QProcess::setProcessChannelMode().

The tests verifies if testForwarding really forwards
the output of testProcessEcho (spawned by testForwarding).

Change-Id: Ifc4164569256aeaeab0edef42116986272362c01
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

tests/auto/corelib/io/qprocess/qprocess.pri

@@ -16,5 +16,7 @@ SUBPROGRAMS = \
           testSetWorkingDirectory \
           testSoftExit
 
+!contains(QMAKE_PLATFORM, wince): SUBPROGRAMS += testForwarding
+
 contains(QT_CONFIG, no-widgets): SUBPROGRAMS -= \
           testGuiProcess

tests/auto/corelib/io/qprocess/testForwarding/main.cpp

@@ -0,0 +1,67 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/QProcess>
+
+int main()
+{
+    QProcess process;
+    process.setProcessChannelMode(QProcess::ForwardedChannels);
+    if (process.processChannelMode() != QProcess::ForwardedChannels)
+        return -1;
+
+    process.start("testProcessEcho/testProcessEcho");
+
+    if (!process.waitForStarted(5000))
+        return -1;
+
+    if (process.write("forwarded\n") != 10)
+        return -1;
+
+    process.waitForReadyRead(250);
+    if (process.bytesAvailable() != 0)
+        return -1;
+
+    process.closeWriteChannel();
+    process.waitForFinished(5000);
+
+    return 0;
+}

tests/auto/corelib/io/qprocess/testForwarding/testForwarding.pro

@@ -0,0 +1,4 @@
+SOURCES = main.cpp
+CONFIG -= app_bundle
+CONFIG += console
+DESTDIR = ./

tests/auto/corelib/io/qprocess/tst_qprocess.cpp

@@ -110,6 +110,7 @@ private slots:
     void softExitInSlots();
     void mergedChannels();
     void forwardedChannels();
+    void forwardedChannelsOutput();
     void atEnd();
     void atEnd2();
     void processInAThread();
@@ -1128,6 +1129,21 @@ void tst_QProcess::forwardedChannels()
     QVERIFY(process.waitForFinished(5000));
 }
 
+void tst_QProcess::forwardedChannelsOutput()
+{
+#ifdef Q_OS_WINCE
+    QSKIP("Reading and writing to a process is not supported on Qt/CE");
+#endif
+
+    QProcess process;
+    process.start("testForwarding/testForwarding");
+    QVERIFY(process.waitForStarted(5000));
+    QVERIFY(process.waitForFinished(5000));
+    QVERIFY(!process.exitCode());
+    QByteArray data = process.readAll();
+    QVERIFY(!data.isEmpty());
+    QVERIFY(data.contains("forwarded"));
+}
 
 //-----------------------------------------------------------------------------
 void tst_QProcess::atEnd()