1/****************************************************************************
2**
3** Copyright (C) 2012 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Stephen Kelly <stephen.kelly@kdab.com>
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the test suite of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL-EXCEPT$
9** Commercial License Usage
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17** GNU General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU
19** General Public License version 3 as published by the Free Software
20** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
21** included in the packaging of this file. Please review the following
22** information to ensure the GNU General Public License requirements will
23** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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25** $QT_END_LICENSE$
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27****************************************************************************/
28
29
30#include <QtTest/QtTest>
31#include <qwidget.h>
32#include <qlabel.h>
33
34class tst_QWidgetMetaType : public QObject
35{
36 Q_OBJECT
37
38public:
39 tst_QWidgetMetaType() {}
40 virtual ~tst_QWidgetMetaType() {}
41
42private slots:
43 void metaObject();
44 void saveAndLoadBuiltin_data();
45 void saveAndLoadBuiltin();
46};
47
48class CustomWidget : public QWidget
49{
50 Q_OBJECT
51public:
52 CustomWidget(QWidget *parent = 0)
53 : QWidget(parent)
54 {
55
56 }
57};
58
59Q_STATIC_ASSERT(( QMetaTypeId2<QSizePolicy>::IsBuiltIn));
60Q_STATIC_ASSERT((!QMetaTypeId2<QWidget*>::IsBuiltIn));
61Q_STATIC_ASSERT((!QMetaTypeId2<QList<QSizePolicy> >::IsBuiltIn));
62Q_STATIC_ASSERT((!QMetaTypeId2<QMap<QString,QSizePolicy> >::IsBuiltIn));
63
64
65void tst_QWidgetMetaType::metaObject()
66{
67 QCOMPARE(QMetaType::metaObjectForType(qMetaTypeId<QWidget*>()), &QWidget::staticMetaObject);
68 QCOMPARE(QMetaType::metaObjectForType(qMetaTypeId<QLabel*>()), &QLabel::staticMetaObject);
69 QCOMPARE(QMetaType::metaObjectForType(qMetaTypeId<CustomWidget*>()), &CustomWidget::staticMetaObject);
70 QCOMPARE(QMetaType::metaObjectForType(qMetaTypeId<QSizePolicy>()), &QSizePolicy::staticMetaObject);
71}
72
73template <typename T>
74struct StreamingTraits
75{
76 // Streamable by default, as currently all widgets built-in types are streamable
77 enum { isStreamable = 1 };
78};
79
80void tst_QWidgetMetaType::saveAndLoadBuiltin_data()
81{
82 QTest::addColumn<int>(name: "type");
83 QTest::addColumn<bool>(name: "isStreamable");
84
85#define ADD_METATYPE_TEST_ROW(MetaTypeName, MetaTypeId, RealType) \
86 QTest::newRow(#RealType) << MetaTypeId << bool(StreamingTraits<RealType>::isStreamable);
87 QT_FOR_EACH_STATIC_WIDGETS_CLASS(ADD_METATYPE_TEST_ROW)
88#undef ADD_METATYPE_TEST_ROW
89}
90
91void tst_QWidgetMetaType::saveAndLoadBuiltin()
92{
93 QFETCH(int, type);
94 QFETCH(bool, isStreamable);
95
96 void *value = QMetaType::create(type);
97
98 QByteArray ba;
99 QDataStream stream(&ba, QIODevice::ReadWrite);
100 QCOMPARE(QMetaType::save(stream, type, value), isStreamable);
101 QCOMPARE(stream.status(), QDataStream::Ok);
102
103 if (isStreamable)
104 QVERIFY(QMetaType::load(stream, type, value));
105
106 stream.device()->seek(pos: 0);
107 stream.resetStatus();
108 QCOMPARE(QMetaType::load(stream, type, value), isStreamable);
109 QCOMPARE(stream.status(), QDataStream::Ok);
110
111 if (isStreamable)
112 QVERIFY(QMetaType::load(stream, type, value));
113
114 QMetaType::destroy(type, data: value);
115}
116
117
118QTEST_MAIN(tst_QWidgetMetaType)
119#include "tst_qwidgetmetatype.moc"
120

source code of qtbase/tests/auto/widgets/kernel/qwidgetmetatype/tst_qwidgetmetatype.cpp