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.
5 #include "base/win/iunknown_impl.h"
7 #include "base/win/scoped_com_initializer.h"
8 #include "testing/gtest/include/gtest/gtest.h"
13 class TestIUnknownImplSubclass : public IUnknownImpl {
15 TestIUnknownImplSubclass() {
18 virtual ~TestIUnknownImplSubclass() {
21 static int instance_count;
25 int TestIUnknownImplSubclass::instance_count = 0;
27 TEST(IUnknownImplTest, IUnknownImpl) {
28 ScopedCOMInitializer com_initializer;
30 EXPECT_EQ(0, TestIUnknownImplSubclass::instance_count);
31 IUnknown* u = new TestIUnknownImplSubclass();
33 EXPECT_EQ(1, TestIUnknownImplSubclass::instance_count);
35 EXPECT_EQ(1, u->AddRef());
36 EXPECT_EQ(1, u->AddRef());
38 IUnknown* other = NULL;
39 EXPECT_EQ(E_NOINTERFACE, u->QueryInterface(
40 IID_IDispatch, reinterpret_cast<void**>(&other)));
41 EXPECT_EQ(S_OK, u->QueryInterface(
42 IID_IUnknown, reinterpret_cast<void**>(&other)));
45 EXPECT_EQ(1, u->Release());
46 EXPECT_EQ(0, u->Release());
47 EXPECT_EQ(0, TestIUnknownImplSubclass::instance_count);