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
|
/* Unit tests for unique-ptr.h.
Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#define INCLUDE_UNIQUE_PTR
#include "system.h"
#include "coretypes.h"
#include "selftest.h"
#if CHECKING_P
namespace selftest {
namespace {
/* A class for counting ctor and dtor invocations. */
struct stats
{
stats () : ctor_count (0), dtor_count (0) {}
int ctor_count;
int dtor_count;
};
/* A class that uses "stats" to track its ctor and dtor invocations. */
class foo
{
public:
foo (stats &s) : m_s (s) { ++m_s.ctor_count; }
~foo () { ++m_s.dtor_count; }
int example_method () const { return 42; }
private:
foo (const foo&);
foo & operator= (const foo &);
private:
stats &m_s;
};
/* A struct for testing unique_ptr<T[]>. */
struct has_default_ctor
{
has_default_ctor () : m_field (42) {}
int m_field;
};
/* A dummy struct for testing unique_xmalloc_ptr. */
struct dummy
{
int field;
};
} // anonymous namespace
/* Verify that the default ctor inits ptrs to NULL. */
static void
test_null_ptr ()
{
gnu::unique_ptr<void *> p;
ASSERT_EQ (NULL, p);
gnu::unique_xmalloc_ptr<void *> q;
ASSERT_EQ (NULL, q);
}
/* Verify that deletion happens when a unique_ptr goes out of scope. */
static void
test_implicit_deletion ()
{
stats s;
ASSERT_EQ (0, s.ctor_count);
ASSERT_EQ (0, s.dtor_count);
{
gnu::unique_ptr<foo> f (new foo (s));
ASSERT_NE (NULL, f);
ASSERT_EQ (1, s.ctor_count);
ASSERT_EQ (0, s.dtor_count);
}
/* Verify that the foo was implicitly deleted. */
ASSERT_EQ (1, s.ctor_count);
ASSERT_EQ (1, s.dtor_count);
}
/* Verify that we can assign to a NULL unique_ptr. */
static void
test_overwrite_of_null ()
{
stats s;
ASSERT_EQ (0, s.ctor_count);
ASSERT_EQ (0, s.dtor_count);
{
gnu::unique_ptr<foo> f;
ASSERT_EQ (NULL, f);
ASSERT_EQ (0, s.ctor_count);
ASSERT_EQ (0, s.dtor_count);
/* Overwrite with a non-NULL value. */
f = gnu::unique_ptr<foo> (new foo (s));
ASSERT_EQ (1, s.ctor_count);
ASSERT_EQ (0, s.dtor_count);
}
/* Verify that the foo is implicitly deleted. */
ASSERT_EQ (1, s.ctor_count);
ASSERT_EQ (1, s.dtor_count);
}
/* Verify that we can assign to a non-NULL unique_ptr. */
static void
test_overwrite_of_non_null ()
{
stats s;
ASSERT_EQ (0, s.ctor_count);
ASSERT_EQ (0, s.dtor_count);
{
gnu::unique_ptr<foo> f (new foo (s));
ASSERT_NE (NULL, f);
ASSERT_EQ (1, s.ctor_count);
ASSERT_EQ (0, s.dtor_count);
/* Overwrite with a different value. */
f = gnu::unique_ptr<foo> (new foo (s));
ASSERT_EQ (2, s.ctor_count);
ASSERT_EQ (1, s.dtor_count);
}
/* Verify that the 2nd foo was implicitly deleted. */
ASSERT_EQ (2, s.ctor_count);
ASSERT_EQ (2, s.dtor_count);
}
/* Verify that unique_ptr's overloaded ops work. */
static void
test_overloaded_ops ()
{
stats s;
gnu::unique_ptr<foo> f (new foo (s));
ASSERT_EQ (42, f->example_method ());
ASSERT_EQ (42, (*f).example_method ());
ASSERT_EQ (f, f);
ASSERT_NE (NULL, f.get ());
gnu::unique_ptr<foo> g (new foo (s));
ASSERT_NE (f, g);
}
/* Verify that the gnu::unique_ptr specialization for T[] works. */
static void
test_array_new ()
{
const int num = 10;
gnu::unique_ptr<has_default_ctor[]> p (new has_default_ctor[num]);
ASSERT_NE (NULL, p.get ());
/* Verify that operator[] works, and that the default ctor was called
on each element. */
for (int i = 0; i < num; i++)
ASSERT_EQ (42, p[i].m_field);
}
/* Verify that gnu::unique_xmalloc_ptr works. */
static void
test_xmalloc ()
{
gnu::unique_xmalloc_ptr<dummy> p (XNEW (dummy));
ASSERT_NE (NULL, p.get ());
}
/* Verify the gnu::unique_xmalloc_ptr specialization for T[]. */
static void
test_xmalloc_array ()
{
const int num = 10;
gnu::unique_xmalloc_ptr<dummy[]> p (XNEWVEC (dummy, num));
ASSERT_NE (NULL, p.get ());
/* Verify that operator[] works. */
for (int i = 0; i < num; i++)
p[i].field = 42;
for (int i = 0; i < num; i++)
ASSERT_EQ (42, p[i].field);
}
/* Run all of the selftests within this file. */
void
unique_ptr_tests_cc_tests ()
{
test_null_ptr ();
test_implicit_deletion ();
test_overwrite_of_null ();
test_overwrite_of_non_null ();
test_overloaded_ops ();
test_array_new ();
test_xmalloc ();
test_xmalloc_array ();
}
} // namespace selftest
#endif /* #if CHECKING_P */
|
