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/****************************************************************************
**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.4
import QtTest 1.1
Item {
id: root
width: 500
height: 500
Timer {
id: timer
interval: 1
running: true
repeat: true
onTriggered: {
if (myCanvas.parent == root) {
myCanvas.parent = null
} else {
myCanvas.parent = root
}
}
}
Canvas {
id: myCanvas
anchors.fill: parent
property var paintContext: null
function paint() {
paintContext.fillStyle = Qt.rgba(1, 0, 0, 1);
paintContext.fillRect(0, 0, width, height);
requestAnimationFrame(paint);
}
onAvailableChanged: {
if (available) {
paintContext = getContext("2d")
requestAnimationFrame(paint);
}
}
}
TestCase {
name: "invalidContext"
when: myCanvas.parent === null && myCanvas.paintContext !== null
function test_paintContextInvalid() {
verify(myCanvas.paintContext);
var caught = false;
try {
console.log(myCanvas.paintContext.fillStyle);
} catch(e) {
caught = true;
}
verify(caught);
timer.running = false
}
}
}
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