Cleanup fontloader cache when QGuiApplication is destroyed

If this cache is used for a second instance of QGuiApplication then the
cache is invalid.

Change-Id: I02ca16dc03a1239b0ed50c7bcfbf87880ca8d948
Task-number: QTBUG-40861
Reviewed-by: Tim Blechmann <tim@klingt.org>
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>

4 files changed, 82 insertions, 0 deletions

diff --git a/tests/auto/quick/qquickfontloader_static/data/font.ttf b/tests/auto/quick/qquickfontloader_static/data/font.ttf
new file mode 100644
index 0000000000..aae50d5035
--- /dev/null
+++ b/tests/auto/quick/qquickfontloader_static/data/font.ttf
diff --git a/tests/auto/quick/qquickfontloader_static/qquickfontloader_static.pro b/tests/auto/quick/qquickfontloader_static/qquickfontloader_static.pro
new file mode 100644
index 0000000000..f6835c05c0
--- /dev/null
+++ b/tests/auto/quick/qquickfontloader_static/qquickfontloader_static.pro
@@ -0,0 +1,12 @@
+CONFIG += testcase
+TARGET = tst_qquickfontloader_static
+macx:CONFIG -= app_bundle
+
+SOURCES += tst_qquickfontloader_static.cpp
+
+include (../../shared/util.pri)
+
+TESTDATA = data/*
+
+QT += core-private gui-private qml-private quick-private network testlib
+DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0
diff --git a/tests/auto/quick/qquickfontloader_static/tst_qquickfontloader_static.cpp b/tests/auto/quick/qquickfontloader_static/tst_qquickfontloader_static.cpp
new file mode 100644
index 0000000000..f7f00172ba
--- /dev/null
+++ b/tests/auto/quick/qquickfontloader_static/tst_qquickfontloader_static.cpp
@@ -0,0 +1,69 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the test suite 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 <QtGui/QGuiApplication>
+#include <QtQuick/QQuickView>
+#include <QtQml/QQmlComponent>
+#include "../../shared/util.h"
+#include <qtest.h>
+
+QByteArray qmltemplate("import QtQuick 2.0\n"
+"\n"
+"Rectangle {\n"
+"    width: 400\n"
+"    height: 400\n"
+"    color: \"red\"\n"
+"    FontLoader { id: fixedFont; source: \"%1\" }\n"
+"    Text {\n"
+"        text: \"hello world\"\n"
+"        anchors.centerIn: parent\n"
+"        font.family: fixedFont.name\n"
+"    }\n"
+"}\n");
+
+int main(int argc, char **argv)
+{
+    for (int i = 0; i < 3; i++) {
+        QGuiApplication app(argc, argv);
+        QQmlDataTest dataTest;
+        dataTest.initTestCase();
+        QQuickView window;
+        QQmlComponent component (window.engine());
+        QUrl current = QUrl::fromLocalFile("");
+        qmltemplate.replace("%1", dataTest.testFileUrl("font.ttf").toString().toLocal8Bit());
+        component.setData(qmltemplate, current);
+        window.setContent(current, &component, component.create());
+        window.show();
+        QTest::qWaitForWindowActive(&window);
+    }
+}
diff --git a/tests/auto/quick/quick.pro b/tests/auto/quick/quick.pro
index 5593fd94f6..f25a28d45b 100644
--- a/tests/auto/quick/quick.pro
+++ b/tests/auto/quick/quick.pro
@@ -18,6 +18,7 @@ PRIVATETESTS += \
     qquickapplication \
     qquickbehaviors \
     qquickfontloader \
+    qquickfontloader_static \
     qquickfontmetrics \
     qquickimageprovider \
     qquickpath \