1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "base/win/scoped_comptr.h"
6
7#include <shlobj.h>
8
9#include "base/memory/scoped_ptr.h"
10#include "base/win/scoped_com_initializer.h"
11#include "testing/gtest/include/gtest/gtest.h"
12
13namespace base {
14namespace win {
15
16namespace {
17
18struct Dummy {
19  Dummy() : adds(0), releases(0) { }
20  void AddRef() { ++adds; }
21  void Release() { ++releases; }
22
23  int adds;
24  int releases;
25};
26
27extern const IID dummy_iid;
28const IID dummy_iid = { 0x12345678u, 0x1234u, 0x5678u, 01, 23, 45, 67, 89,
29                        01, 23, 45 };
30
31}  // namespace
32
33TEST(ScopedComPtrTest, ScopedComPtr) {
34  EXPECT_TRUE(memcmp(&ScopedComPtr<IUnknown>::iid(), &IID_IUnknown,
35                     sizeof(IID)) == 0);
36
37  base::win::ScopedCOMInitializer com_initializer;
38  EXPECT_TRUE(com_initializer.succeeded());
39
40  ScopedComPtr<IUnknown> unk;
41  EXPECT_TRUE(SUCCEEDED(unk.CreateInstance(CLSID_ShellLink)));
42  ScopedComPtr<IUnknown> unk2;
43  unk2.Attach(unk.Detach());
44  EXPECT_TRUE(unk == NULL);
45  EXPECT_TRUE(unk2 != NULL);
46
47  ScopedComPtr<IMalloc> mem_alloc;
48  EXPECT_TRUE(SUCCEEDED(CoGetMalloc(1, mem_alloc.Receive())));
49
50  ScopedComPtr<IUnknown> qi_test;
51  EXPECT_HRESULT_SUCCEEDED(mem_alloc.QueryInterface(IID_IUnknown,
52      reinterpret_cast<void**>(qi_test.Receive())));
53  EXPECT_TRUE(qi_test.get() != NULL);
54  qi_test.Release();
55
56  // test ScopedComPtr& constructor
57  ScopedComPtr<IMalloc> copy1(mem_alloc);
58  EXPECT_TRUE(copy1.IsSameObject(mem_alloc));
59  EXPECT_FALSE(copy1.IsSameObject(unk2));  // unk2 is valid but different
60  EXPECT_FALSE(copy1.IsSameObject(unk));  // unk is NULL
61
62  IMalloc* naked_copy = copy1.Detach();
63  copy1 = naked_copy;  // Test the =(T*) operator.
64  naked_copy->Release();
65
66  copy1.Release();
67  EXPECT_FALSE(copy1.IsSameObject(unk2));  // unk2 is valid, copy1 is not
68
69  // test Interface* constructor
70  ScopedComPtr<IMalloc> copy2(static_cast<IMalloc*>(mem_alloc));
71  EXPECT_TRUE(copy2.IsSameObject(mem_alloc));
72
73  EXPECT_TRUE(SUCCEEDED(unk.QueryFrom(mem_alloc)));
74  EXPECT_TRUE(unk != NULL);
75  unk.Release();
76  EXPECT_TRUE(unk == NULL);
77  EXPECT_TRUE(unk.IsSameObject(copy1));  // both are NULL
78}
79
80TEST(ScopedComPtrTest, ScopedComPtrVector) {
81  // Verify we don't get error C2558.
82  typedef ScopedComPtr<Dummy, &dummy_iid> Ptr;
83  std::vector<Ptr> bleh;
84
85  scoped_ptr<Dummy> p(new Dummy);
86  {
87    Ptr p2(p.get());
88    EXPECT_EQ(p->adds, 1);
89    EXPECT_EQ(p->releases, 0);
90    Ptr p3 = p2;
91    EXPECT_EQ(p->adds, 2);
92    EXPECT_EQ(p->releases, 0);
93    p3 = p2;
94    EXPECT_EQ(p->adds, 3);
95    EXPECT_EQ(p->releases, 1);
96    // To avoid hitting a reallocation.
97    bleh.reserve(1);
98    bleh.push_back(p2);
99    EXPECT_EQ(p->adds, 4);
100    EXPECT_EQ(p->releases, 1);
101    EXPECT_EQ(bleh[0], p.get());
102    bleh.pop_back();
103    EXPECT_EQ(p->adds, 4);
104    EXPECT_EQ(p->releases, 2);
105  }
106  EXPECT_EQ(p->adds, 4);
107  EXPECT_EQ(p->releases, 4);
108}
109
110}  // namespace win
111}  // namespace base
112