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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/win/scoped_comptr.h"
#include <shlobj.h>
#include "base/memory/scoped_ptr.h"
#include "base/win/scoped_com_initializer.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace win {
namespace {
struct Dummy {
Dummy() : adds(0), releases(0) { }
void AddRef() { ++adds; }
void Release() { ++releases; }
int adds;
int releases;
};
extern const IID dummy_iid;
const IID dummy_iid = { 0x12345678u, 0x1234u, 0x5678u, 01, 23, 45, 67, 89,
01, 23, 45 };
} // namespace
TEST(ScopedComPtrTest, ScopedComPtr) {
EXPECT_TRUE(memcmp(&ScopedComPtr<IUnknown>::iid(), &IID_IUnknown,
sizeof(IID)) == 0);
base::win::ScopedCOMInitializer com_initializer;
EXPECT_TRUE(com_initializer.succeeded());
ScopedComPtr<IUnknown> unk;
EXPECT_TRUE(SUCCEEDED(unk.CreateInstance(CLSID_ShellLink)));
ScopedComPtr<IUnknown> unk2;
unk2.Attach(unk.Detach());
EXPECT_TRUE(unk == NULL);
EXPECT_TRUE(unk2 != NULL);
ScopedComPtr<IMalloc> mem_alloc;
EXPECT_TRUE(SUCCEEDED(CoGetMalloc(1, mem_alloc.Receive())));
ScopedComPtr<IUnknown> qi_test;
EXPECT_HRESULT_SUCCEEDED(mem_alloc.QueryInterface(IID_IUnknown,
reinterpret_cast<void**>(qi_test.Receive())));
EXPECT_TRUE(qi_test.get() != NULL);
qi_test.Release();
// test ScopedComPtr& constructor
ScopedComPtr<IMalloc> copy1(mem_alloc);
EXPECT_TRUE(copy1.IsSameObject(mem_alloc));
EXPECT_FALSE(copy1.IsSameObject(unk2)); // unk2 is valid but different
EXPECT_FALSE(copy1.IsSameObject(unk)); // unk is NULL
IMalloc* naked_copy = copy1.Detach();
copy1 = naked_copy; // Test the =(T*) operator.
naked_copy->Release();
copy1.Release();
EXPECT_FALSE(copy1.IsSameObject(unk2)); // unk2 is valid, copy1 is not
// test Interface* constructor
ScopedComPtr<IMalloc> copy2(static_cast<IMalloc*>(mem_alloc));
EXPECT_TRUE(copy2.IsSameObject(mem_alloc));
EXPECT_TRUE(SUCCEEDED(unk.QueryFrom(mem_alloc)));
EXPECT_TRUE(unk != NULL);
unk.Release();
EXPECT_TRUE(unk == NULL);
EXPECT_TRUE(unk.IsSameObject(copy1)); // both are NULL
}
TEST(ScopedComPtrTest, ScopedComPtrVector) {
// Verify we don't get error C2558.
typedef ScopedComPtr<Dummy, &dummy_iid> Ptr;
std::vector<Ptr> bleh;
scoped_ptr<Dummy> p(new Dummy);
{
Ptr p2(p.get());
EXPECT_EQ(p->adds, 1);
EXPECT_EQ(p->releases, 0);
Ptr p3 = p2;
EXPECT_EQ(p->adds, 2);
EXPECT_EQ(p->releases, 0);
p3 = p2;
EXPECT_EQ(p->adds, 3);
EXPECT_EQ(p->releases, 1);
// To avoid hitting a reallocation.
bleh.reserve(1);
bleh.push_back(p2);
EXPECT_EQ(p->adds, 4);
EXPECT_EQ(p->releases, 1);
EXPECT_EQ(bleh[0], p.get());
bleh.pop_back();
EXPECT_EQ(p->adds, 4);
EXPECT_EQ(p->releases, 2);
}
EXPECT_EQ(p->adds, 4);
EXPECT_EQ(p->releases, 4);
}
} // namespace win
} // namespace base
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