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 "testing/gtest/include/gtest/gtest.h"
11
12 namespace base {
13 namespace win {
14
15 namespace {
16
17 struct Dummy {
Dummybase::win::__anon942e32b60111::Dummy18 Dummy() : adds(0), releases(0) { }
AddRefbase::win::__anon942e32b60111::Dummy19 void AddRef() { ++adds; }
Releasebase::win::__anon942e32b60111::Dummy20 void Release() { ++releases; }
21
22 int adds;
23 int releases;
24 };
25
26 extern const IID dummy_iid;
27 const IID dummy_iid = { 0x12345678u, 0x1234u, 0x5678u, 01, 23, 45, 67, 89,
28 01, 23, 45 };
29
30 } // namespace
31
TEST(ScopedComPtrTest,ScopedComPtr)32 TEST(ScopedComPtrTest, ScopedComPtr) {
33 EXPECT_TRUE(memcmp(&ScopedComPtr<IUnknown>::iid(), &IID_IUnknown,
34 sizeof(IID)) == 0);
35
36 EXPECT_TRUE(SUCCEEDED(::CoInitialize(NULL)));
37
38 {
39 ScopedComPtr<IUnknown> unk;
40 EXPECT_TRUE(SUCCEEDED(unk.CreateInstance(CLSID_ShellLink)));
41 ScopedComPtr<IUnknown> unk2;
42 unk2.Attach(unk.Detach());
43 EXPECT_TRUE(unk == NULL);
44 EXPECT_TRUE(unk2 != NULL);
45
46 ScopedComPtr<IMalloc> mem_alloc;
47 EXPECT_TRUE(SUCCEEDED(CoGetMalloc(1, mem_alloc.Receive())));
48
49 ScopedComPtr<IUnknown> qi_test;
50 EXPECT_HRESULT_SUCCEEDED(mem_alloc.QueryInterface(IID_IUnknown,
51 reinterpret_cast<void**>(qi_test.Receive())));
52 EXPECT_TRUE(qi_test.get() != NULL);
53 qi_test.Release();
54
55 // test ScopedComPtr& constructor
56 ScopedComPtr<IMalloc> copy1(mem_alloc);
57 EXPECT_TRUE(copy1.IsSameObject(mem_alloc));
58 EXPECT_FALSE(copy1.IsSameObject(unk2)); // unk2 is valid but different
59 EXPECT_FALSE(copy1.IsSameObject(unk)); // unk is NULL
60
61 IMalloc* naked_copy = copy1.Detach();
62 copy1 = naked_copy; // Test the =(T*) operator.
63 naked_copy->Release();
64
65 copy1.Release();
66 EXPECT_FALSE(copy1.IsSameObject(unk2)); // unk2 is valid, copy1 is not
67
68 // test Interface* constructor
69 ScopedComPtr<IMalloc> copy2(static_cast<IMalloc*>(mem_alloc));
70 EXPECT_TRUE(copy2.IsSameObject(mem_alloc));
71
72 EXPECT_TRUE(SUCCEEDED(unk.QueryFrom(mem_alloc)));
73 EXPECT_TRUE(unk != NULL);
74 unk.Release();
75 EXPECT_TRUE(unk == NULL);
76 EXPECT_TRUE(unk.IsSameObject(copy1)); // both are NULL
77 }
78
79 ::CoUninitialize();
80 }
81
TEST(ScopedComPtrTest,ScopedComPtrVector)82 TEST(ScopedComPtrTest, ScopedComPtrVector) {
83 // Verify we don't get error C2558.
84 typedef ScopedComPtr<Dummy, &dummy_iid> Ptr;
85 std::vector<Ptr> bleh;
86
87 scoped_ptr<Dummy> p(new Dummy);
88 {
89 Ptr p2(p.get());
90 EXPECT_EQ(p->adds, 1);
91 EXPECT_EQ(p->releases, 0);
92 Ptr p3 = p2;
93 EXPECT_EQ(p->adds, 2);
94 EXPECT_EQ(p->releases, 0);
95 p3 = p2;
96 EXPECT_EQ(p->adds, 3);
97 EXPECT_EQ(p->releases, 1);
98 // To avoid hitting a reallocation.
99 bleh.reserve(1);
100 bleh.push_back(p2);
101 EXPECT_EQ(p->adds, 4);
102 EXPECT_EQ(p->releases, 1);
103 EXPECT_EQ(bleh[0], p.get());
104 bleh.pop_back();
105 EXPECT_EQ(p->adds, 4);
106 EXPECT_EQ(p->releases, 2);
107 }
108 EXPECT_EQ(p->adds, 4);
109 EXPECT_EQ(p->releases, 4);
110 }
111
112 } // namespace win
113 } // namespace base
114