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
|
// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/leak_tracker.h"
#include "base/scoped_ptr.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace {
class ClassA {
private:
base::LeakTracker<ClassA> leak_tracker_;
};
class ClassB {
private:
base::LeakTracker<ClassB> leak_tracker_;
};
#ifndef ENABLE_LEAK_TRACKER
// If leak tracking is disabled, we should do nothing.
TEST(LeakTrackerTest, NotEnabled) {
EXPECT_EQ(-1, base::LeakTracker<ClassA>::NumLiveInstances());
EXPECT_EQ(-1, base::LeakTracker<ClassB>::NumLiveInstances());
// Use scoped_ptr so compiler doesn't complain about unused variables.
scoped_ptr<ClassA> a1(new ClassA);
scoped_ptr<ClassB> b1(new ClassB);
scoped_ptr<ClassB> b2(new ClassB);
EXPECT_EQ(-1, base::LeakTracker<ClassA>::NumLiveInstances());
EXPECT_EQ(-1, base::LeakTracker<ClassB>::NumLiveInstances());
}
#else
TEST(LeakTrackerTest, Basic) {
{
ClassA a1;
EXPECT_EQ(1, base::LeakTracker<ClassA>::NumLiveInstances());
EXPECT_EQ(0, base::LeakTracker<ClassB>::NumLiveInstances());
ClassB b1;
ClassB b2;
EXPECT_EQ(1, base::LeakTracker<ClassA>::NumLiveInstances());
EXPECT_EQ(2, base::LeakTracker<ClassB>::NumLiveInstances());
scoped_ptr<ClassA> a2(new ClassA);
EXPECT_EQ(2, base::LeakTracker<ClassA>::NumLiveInstances());
EXPECT_EQ(2, base::LeakTracker<ClassB>::NumLiveInstances());
a2.reset();
EXPECT_EQ(1, base::LeakTracker<ClassA>::NumLiveInstances());
EXPECT_EQ(2, base::LeakTracker<ClassB>::NumLiveInstances());
}
EXPECT_EQ(0, base::LeakTracker<ClassA>::NumLiveInstances());
EXPECT_EQ(0, base::LeakTracker<ClassB>::NumLiveInstances());
}
// Try some orderings of create/remove to hit different cases in the linked-list
// assembly.
TEST(LeakTrackerTest, LinkedList) {
EXPECT_EQ(0, base::LeakTracker<ClassB>::NumLiveInstances());
scoped_ptr<ClassA> a1(new ClassA);
scoped_ptr<ClassA> a2(new ClassA);
scoped_ptr<ClassA> a3(new ClassA);
scoped_ptr<ClassA> a4(new ClassA);
EXPECT_EQ(4, base::LeakTracker<ClassA>::NumLiveInstances());
// Remove the head of the list (a1).
a1.reset();
EXPECT_EQ(3, base::LeakTracker<ClassA>::NumLiveInstances());
// Remove the tail of the list (a4).
a4.reset();
EXPECT_EQ(2, base::LeakTracker<ClassA>::NumLiveInstances());
// Append to the new tail of the list (a3).
scoped_ptr<ClassA> a5(new ClassA);
EXPECT_EQ(3, base::LeakTracker<ClassA>::NumLiveInstances());
a2.reset();
a3.reset();
EXPECT_EQ(1, base::LeakTracker<ClassA>::NumLiveInstances());
a5.reset();
EXPECT_EQ(0, base::LeakTracker<ClassA>::NumLiveInstances());
}
TEST(LeakTrackerTest, NoOpCheckForLeaks) {
// There are no live instances of ClassA, so this should do nothing.
base::LeakTracker<ClassA>::CheckForLeaks();
}
#endif // ENABLE_LEAK_TRACKER
} // namespace
|
