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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/iunknown_impl.h"
#include "base/win/scoped_com_initializer.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace win {
class TestIUnknownImplSubclass : public IUnknownImpl {
public:
TestIUnknownImplSubclass() {
++instance_count;
}
~TestIUnknownImplSubclass() override { --instance_count; }
static int instance_count;
};
// static
int TestIUnknownImplSubclass::instance_count = 0;
TEST(IUnknownImplTest, IUnknownImpl) {
ScopedCOMInitializer com_initializer;
EXPECT_EQ(0, TestIUnknownImplSubclass::instance_count);
IUnknown* u = new TestIUnknownImplSubclass();
EXPECT_EQ(1, TestIUnknownImplSubclass::instance_count);
EXPECT_EQ(1, u->AddRef());
EXPECT_EQ(1, u->AddRef());
IUnknown* other = NULL;
EXPECT_EQ(E_NOINTERFACE, u->QueryInterface(
IID_IDispatch, reinterpret_cast<void**>(&other)));
EXPECT_EQ(S_OK, u->QueryInterface(
IID_IUnknown, reinterpret_cast<void**>(&other)));
other->Release();
EXPECT_EQ(1, u->Release());
EXPECT_EQ(0, u->Release());
EXPECT_EQ(0, TestIUnknownImplSubclass::instance_count);
}
} // namespace win
} // namespace base
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