QTestLib: Disable window state restore on macOS

For test runs we want to start with a clean slate
and ignore previously saved window state.

This also prevents the “previous restore failed” dialog
from from showing and blocking the test run.

Change-Id: I8e5b87a903cf1d937d628c2b062f917c4c37f176
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>

1 files changed, 53 insertions, 0 deletions

diff --git a/src/testlib/qtestutil_macos.mm b/src/testlib/qtestutil_macos.mm
new file mode 100644
index 0000000000..852c9f75f2
--- /dev/null
+++ b/src/testlib/qtestutil_macos.mm
@@ -0,0 +1,53 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtTest module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** 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 The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qtestutil_macos_p.h"
+
+#import <AppKit/AppKit.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace QTestPrivate {
+
+    /*! \internal
+
+        Disables restoration of previously saved window state. This causes tests
+        to start with a clean slate and prevents the "previous restore failed"
+        dialog from showing if there was a test crash.
+    */
+    void disableWindowRestore() {
+        [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"ApplePersistenceIgnoreState"];
+    }
+}
+
+QT_END_NAMESPACE