1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
|
/****************************************************************************
**
** Copyright (C) 2016 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtTest/QtTest>
#include <QtCore/QSharedData>
/*!
\class tst_QExplicitlySharedDataPointer
\internal
\since 4.4
\brief Tests class QExplicitlySharedDataPointer.
*/
class tst_QExplicitlySharedDataPointer : public QObject
{
Q_OBJECT
private Q_SLOTS:
void pointerOperatorOnConst() const;
void pointerOperatorOnMutable() const;
void copyConstructor() const;
void clone() const;
void data() const;
void reset() const;
void swap() const;
};
class MyClass : public QSharedData
{
public:
void mutating()
{
}
void notMutating() const
{
}
MyClass &operator=(const MyClass &)
{
return *this;
}
};
class Base : public QSharedData
{
public:
virtual ~Base() { }
virtual Base *clone() { return new Base(*this); }
virtual bool isBase() const { return true; }
};
class Derived : public Base
{
public:
virtual Base *clone() { return new Derived(*this); }
virtual bool isBase() const { return false; }
};
QT_BEGIN_NAMESPACE
template<> Base *QExplicitlySharedDataPointer<Base>::clone()
{
return d->clone();
}
QT_END_NAMESPACE
void tst_QExplicitlySharedDataPointer::pointerOperatorOnConst() const
{
/* Pointer itself is const. */
{
const QExplicitlySharedDataPointer<const MyClass> pointer(new MyClass());
pointer->notMutating();
}
/* Pointer itself is mutable. */
{
QExplicitlySharedDataPointer<const MyClass> pointer(new MyClass());
pointer->notMutating();
}
}
void tst_QExplicitlySharedDataPointer::pointerOperatorOnMutable() const
{
/* Pointer itself is const. */
{
const QExplicitlySharedDataPointer<MyClass> pointer(new MyClass());
pointer->notMutating();
pointer->mutating();
*pointer = MyClass();
}
/* Pointer itself is mutable. */
{
const QExplicitlySharedDataPointer<MyClass> pointer(new MyClass());
pointer->notMutating();
pointer->mutating();
*pointer = MyClass();
}
}
void tst_QExplicitlySharedDataPointer::copyConstructor() const
{
const QExplicitlySharedDataPointer<const MyClass> pointer(new MyClass());
const QExplicitlySharedDataPointer<const MyClass> copy(pointer);
}
void tst_QExplicitlySharedDataPointer::clone() const
{
/* holding a base element */
{
QExplicitlySharedDataPointer<Base> pointer(new Base);
QVERIFY(pointer->isBase());
QExplicitlySharedDataPointer<Base> copy(pointer);
pointer.detach();
QVERIFY(pointer->isBase());
}
/* holding a derived element */
{
QExplicitlySharedDataPointer<Base> pointer(new Derived);
QVERIFY(!pointer->isBase());
QExplicitlySharedDataPointer<Base> copy(pointer);
pointer.detach();
QVERIFY(!pointer->isBase());
}
}
void tst_QExplicitlySharedDataPointer::data() const
{
/* Check default value. */
{
QExplicitlySharedDataPointer<const MyClass> pointer;
QCOMPARE(pointer.data(), static_cast<const MyClass *>(0));
QVERIFY(pointer == nullptr);
QVERIFY(nullptr == pointer);
}
/* On const pointer. Must not mutate the pointer. */
{
const QExplicitlySharedDataPointer<const MyClass> pointer(new MyClass());
pointer.data();
/* Check that this cast is possible. */
static_cast<const MyClass *>(pointer.data());
QVERIFY(! (pointer == nullptr));
QVERIFY(! (nullptr == pointer));
}
/* On mutatable pointer. Must not mutate the pointer. */
{
QExplicitlySharedDataPointer<const MyClass> pointer(new MyClass());
pointer.data();
/* Check that this cast is possible. */
static_cast<const MyClass *>(pointer.data());
}
/* Must not mutate the pointer. */
{
const QExplicitlySharedDataPointer<MyClass> pointer(new MyClass());
pointer.data();
/* Check that these casts are possible. */
static_cast<MyClass *>(pointer.data());
static_cast<const MyClass *>(pointer.data());
}
/* Must not mutate the pointer. */
{
QExplicitlySharedDataPointer<MyClass> pointer(new MyClass());
pointer.data();
/* Check that these casts are possible. */
static_cast<MyClass *>(pointer.data());
static_cast<const MyClass *>(pointer.data());
}
}
void tst_QExplicitlySharedDataPointer::reset() const
{
/* Do reset on a single ref count. */
{
QExplicitlySharedDataPointer<MyClass> pointer(new MyClass());
QVERIFY(pointer.data() != 0);
pointer.reset();
QCOMPARE(pointer.data(), static_cast<MyClass *>(0));
}
/* Do reset on a default constructed object. */
{
QExplicitlySharedDataPointer<MyClass> pointer;
QCOMPARE(pointer.data(), static_cast<MyClass *>(0));
pointer.reset();
QCOMPARE(pointer.data(), static_cast<MyClass *>(0));
}
}
void tst_QExplicitlySharedDataPointer::swap() const
{
QExplicitlySharedDataPointer<MyClass> p1(0), p2(new MyClass());
QVERIFY(!p1.data());
QVERIFY(p2.data());
p1.swap(p2);
QVERIFY(p1.data());
QVERIFY(!p2.data());
p1.swap(p2);
QVERIFY(!p1.data());
QVERIFY(p2.data());
qSwap(p1, p2);
QVERIFY(p1.data());
QVERIFY(!p2.data());
}
QTEST_MAIN(tst_QExplicitlySharedDataPointer)
#include "tst_qexplicitlyshareddatapointer.moc"
// vim: et:ts=4:sw=4:sts=4
|
