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 // Use explicit function call notation here to suppress self-assign warning.
81 a0.operator=(a0);
82 a1 = a2;
83 ASSERT_EQ(a0.get(), static_cast<A*>(NULL));
84 ASSERT_EQ(a1.get(), static_cast<A*>(NULL));
85 ASSERT_EQ(a2.get(), static_cast<A*>(NULL));
86 ASSERT_TRUE(a0 == NULL);
87 ASSERT_TRUE(a1 == NULL);
88 ASSERT_TRUE(a2 == NULL);
89
90 {
91 linked_ptr<A> a3(new A);
92 a0 = a3;
93 ASSERT_TRUE(a0 == a3);
94 ASSERT_TRUE(a0 != NULL);
95 ASSERT_TRUE(a0.get() == a3);
96 ASSERT_TRUE(a0 == a3.get());
97 linked_ptr<A> a4(a0);
98 a1 = a4;
99 linked_ptr<A> a5(new A);
100 ASSERT_TRUE(a5.get() != a3);
101 ASSERT_TRUE(a5 != a3.get());
102 a2 = a5;
103 linked_ptr<B> b0(new B);
104 linked_ptr<A> a6(b0);
105 ASSERT_TRUE(b0 == a6);
106 ASSERT_TRUE(a6 == b0);
107 ASSERT_TRUE(b0 != NULL);
108 a5 = b0;
109 a5 = b0;
110 a3->Use();
111 a4->Use();
112 a5->Use();
113 a6->Use();
114 b0->Use();
115 (*b0).Use();
116 b0.get()->Use();
117 }
118
119 a0->Use();
120 a1->Use();
121 a2->Use();
122
123 a1 = a2;
124 a2.reset(new A);
125 a0.reset();
126
127 linked_ptr<A> a7;
128 }
129
130 ASSERT_STREQ(
131 "A0 ctor\n"
132 "A1 ctor\n"
133 "A2 ctor\n"
134 "B2 ctor\n"
135 "A0 use\n"
136 "A0 use\n"
137 "B2 use\n"
138 "B2 use\n"
139 "B2 use\n"
140 "B2 use\n"
141 "B2 use\n"
142 "B2 dtor\n"
143 "A2 dtor\n"
144 "A0 use\n"
145 "A0 use\n"
146 "A1 use\n"
147 "A3 ctor\n"
148 "A0 dtor\n"
149 "A3 dtor\n"
150 "A1 dtor\n",
151 history->GetString().c_str());
152 }
153
154 } // Unnamed namespace
155