52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/win/iunknown_impl.h"
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#include "base/win/scoped_com_initializer.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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namespace win {
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class TestIUnknownImplSubclass : public IUnknownImpl {
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public:
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TestIUnknownImplSubclass() {
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++instance_count;
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}
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virtual ~TestIUnknownImplSubclass() {
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--instance_count;
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}
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static int instance_count;
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};
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// static
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int TestIUnknownImplSubclass::instance_count = 0;
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TEST(IUnknownImplTest, IUnknownImpl) {
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ScopedCOMInitializer com_initializer;
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EXPECT_EQ(0, TestIUnknownImplSubclass::instance_count);
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IUnknown* u = new TestIUnknownImplSubclass();
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EXPECT_EQ(1, TestIUnknownImplSubclass::instance_count);
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EXPECT_EQ(1, u->AddRef());
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EXPECT_EQ(1, u->AddRef());
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IUnknown* other = NULL;
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EXPECT_EQ(E_NOINTERFACE, u->QueryInterface(
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IID_IDispatch, reinterpret_cast<void**>(&other)));
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EXPECT_EQ(S_OK, u->QueryInterface(
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IID_IUnknown, reinterpret_cast<void**>(&other)));
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other->Release();
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EXPECT_EQ(1, u->Release());
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EXPECT_EQ(0, u->Release());
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EXPECT_EQ(0, TestIUnknownImplSubclass::instance_count);
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}
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} // namespace win
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} // namespace base
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