1// Copyright 2003, Google Inc.
2// All rights reserved.
3//
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7//
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9// notice, this list of conditions and the following disclaimer.
10//     * Redistributions in binary form must reproduce the above
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12// in the documentation and/or other materials provided with the
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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,
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24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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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
38namespace {
39
40using testing::Message;
41using testing::internal::linked_ptr;
42
43int num;
44Message* history = NULL;
45
46// Class which tracks allocation/deallocation
47class A {
48 public:
49  A(): mynum(num++) { *history << "A" << mynum << " ctor\n"; }
50  virtual ~A() { *history << "A" << mynum << " dtor\n"; }
51  virtual void Use() { *history << "A" << mynum << " use\n"; }
52 protected:
53  int mynum;
54};
55
56// Subclass
57class B : public A {
58 public:
59  B() { *history << "B" << mynum << " ctor\n"; }
60  ~B() { *history << "B" << mynum << " dtor\n"; }
61  virtual void Use() { *history << "B" << mynum << " use\n"; }
62};
63
64class LinkedPtrTest : public testing::Test {
65 public:
66  LinkedPtrTest() {
67    num = 0;
68    history = new Message;
69  }
70
71  virtual ~LinkedPtrTest() {
72    delete history;
73    history = NULL;
74  }
75};
76
77TEST_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