1 // Copyright 2003, Google Inc.
2 // All rights reserved.
3 //
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are
6 // met:
7 //
8 // * Redistributions of source code must retain the above copyright
9 // notice, this list of conditions and the following disclaimer.
10 // * Redistributions in binary form must reproduce the above
11 // copyright notice, this list of conditions and the following disclaimer
12 // in the documentation and/or other materials provided with the
13 // distribution.
14 // * Neither the name of Google Inc. nor the names of its
15 // contributors may be used to endorse or promote products derived from
16 // this software without specific prior written permission.
17 //
18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 //
30 // Authors: Dan Egnor (egnor@google.com)
31 // Ported to Windows: Vadim Berman (vadimb@google.com)
32
33 #include <gtest/internal/gtest-linked_ptr.h>
34
35 #include <stdlib.h>
36 #include <gtest/gtest.h>
37
38 namespace {
39
40 using testing::Message;
41 using testing::internal::linked_ptr;
42
43 int num;
44 Message* history = NULL;
45
46 // Class which tracks allocation/deallocation
47 class A {
48 public:
A()49 A(): mynum(num++) { *history << "A" << mynum << " ctor\n"; }
~A()50 virtual ~A() { *history << "A" << mynum << " dtor\n"; }
Use()51 virtual void Use() { *history << "A" << mynum << " use\n"; }
52 protected:
53 int mynum;
54 };
55
56 // Subclass
57 class B : public A {
58 public:
B()59 B() { *history << "B" << mynum << " ctor\n"; }
~B()60 ~B() { *history << "B" << mynum << " dtor\n"; }
Use()61 virtual void Use() { *history << "B" << mynum << " use\n"; }
62 };
63
64 class LinkedPtrTest : public testing::Test {
65 public:
LinkedPtrTest()66 LinkedPtrTest() {
67 num = 0;
68 history = new Message;
69 }
70
~LinkedPtrTest()71 virtual ~LinkedPtrTest() {
72 delete history;
73 history = NULL;
74 }
75 };
76
TEST_F(LinkedPtrTest,GeneralTest)77 TEST_F(LinkedPtrTest, GeneralTest) {
78 {
79 linked_ptr<A> a0, a1, a2;
80 a0 = a0;
81 a1 = a2;
82 ASSERT_EQ(a0.get(), static_cast<A*>(NULL));
83 ASSERT_EQ(a1.get(), static_cast<A*>(NULL));
84 ASSERT_EQ(a2.get(), static_cast<A*>(NULL));
85 ASSERT_TRUE(a0 == NULL);
86 ASSERT_TRUE(a1 == NULL);
87 ASSERT_TRUE(a2 == NULL);
88
89 {
90 linked_ptr<A> a3(new A);
91 a0 = a3;
92 ASSERT_TRUE(a0 == a3);
93 ASSERT_TRUE(a0 != NULL);
94 ASSERT_TRUE(a0.get() == a3);
95 ASSERT_TRUE(a0 == a3.get());
96 linked_ptr<A> a4(a0);
97 a1 = a4;
98 linked_ptr<A> a5(new A);
99 ASSERT_TRUE(a5.get() != a3);
100 ASSERT_TRUE(a5 != a3.get());
101 a2 = a5;
102 linked_ptr<B> b0(new B);
103 linked_ptr<A> a6(b0);
104 ASSERT_TRUE(b0 == a6);
105 ASSERT_TRUE(a6 == b0);
106 ASSERT_TRUE(b0 != NULL);
107 a5 = b0;
108 a5 = b0;
109 a3->Use();
110 a4->Use();
111 a5->Use();
112 a6->Use();
113 b0->Use();
114 (*b0).Use();
115 b0.get()->Use();
116 }
117
118 a0->Use();
119 a1->Use();
120 a2->Use();
121
122 a1 = a2;
123 a2.reset(new A);
124 a0.reset();
125
126 linked_ptr<A> a7;
127 }
128
129 ASSERT_STREQ(
130 "A0 ctor\n"
131 "A1 ctor\n"
132 "A2 ctor\n"
133 "B2 ctor\n"
134 "A0 use\n"
135 "A0 use\n"
136 "B2 use\n"
137 "B2 use\n"
138 "B2 use\n"
139 "B2 use\n"
140 "B2 use\n"
141 "B2 dtor\n"
142 "A2 dtor\n"
143 "A0 use\n"
144 "A0 use\n"
145 "A1 use\n"
146 "A3 ctor\n"
147 "A0 dtor\n"
148 "A3 dtor\n"
149 "A1 dtor\n",
150 history->GetString().c_str()
151 );
152 }
153
154 } // Unnamed namespace
155