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// Copyright (c) 2012 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 "media/audio/win/audio_device_listener_win.h"
#include <memory>
#include <string>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/macros.h"
#include "base/strings/utf_string_conversions.h"
#include "base/test/simple_test_tick_clock.h"
#include "base/win/scoped_com_initializer.h"
#include "media/audio/audio_manager.h"
#include "media/audio/audio_unittest_util.h"
#include "media/audio/win/core_audio_util_win.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using base::win::ScopedCOMInitializer;
namespace media {
static const char kFirstTestDevice[] = "test_device_0";
static const char kSecondTestDevice[] = "test_device_1";
class AudioDeviceListenerWinTest : public testing::Test {
public:
AudioDeviceListenerWinTest() {
DCHECK(com_init_.Succeeded());
}
virtual void SetUp() {
if (!CoreAudioUtil::IsSupported())
return;
output_device_listener_.reset(new AudioDeviceListenerWin(base::Bind(
&AudioDeviceListenerWinTest::OnDeviceChange, base::Unretained(this))));
tick_clock_.Advance(base::TimeDelta::FromSeconds(12345));
output_device_listener_->tick_clock_ = &tick_clock_;
}
void AdvanceLastDeviceChangeTime() {
tick_clock_.Advance(base::TimeDelta::FromMilliseconds(
AudioDeviceListenerWin::kDeviceChangeLimitMs + 1));
}
// Simulate a device change where no output devices are available.
bool SimulateNullDefaultOutputDeviceChange() {
return output_device_listener_->OnDefaultDeviceChanged(
static_cast<EDataFlow>(eConsole), static_cast<ERole>(eRender),
NULL) == S_OK;
}
bool SimulateDefaultOutputDeviceChange(const char* new_device_id) {
return output_device_listener_->OnDefaultDeviceChanged(
static_cast<EDataFlow>(eConsole), static_cast<ERole>(eRender),
base::ASCIIToUTF16(new_device_id).c_str()) == S_OK;
}
MOCK_METHOD0(OnDeviceChange, void());
private:
ScopedCOMInitializer com_init_;
std::unique_ptr<AudioDeviceListenerWin> output_device_listener_;
base::SimpleTestTickClock tick_clock_;
DISALLOW_COPY_AND_ASSIGN(AudioDeviceListenerWinTest);
};
// Simulate a device change events and ensure we get the right callbacks.
TEST_F(AudioDeviceListenerWinTest, OutputDeviceChange) {
ABORT_AUDIO_TEST_IF_NOT(CoreAudioUtil::IsSupported());
EXPECT_CALL(*this, OnDeviceChange()).Times(1);
ASSERT_TRUE(SimulateDefaultOutputDeviceChange(kFirstTestDevice));
testing::Mock::VerifyAndClear(this);
AdvanceLastDeviceChangeTime();
EXPECT_CALL(*this, OnDeviceChange()).Times(1);
ASSERT_TRUE(SimulateDefaultOutputDeviceChange(kSecondTestDevice));
// The second device event should be ignored since it occurs too soon.
ASSERT_TRUE(SimulateDefaultOutputDeviceChange(kSecondTestDevice));
}
// Ensure that null output device changes don't crash. Simulates the situation
// where we have no output devices.
TEST_F(AudioDeviceListenerWinTest, NullOutputDeviceChange) {
ABORT_AUDIO_TEST_IF_NOT(CoreAudioUtil::IsSupported());
EXPECT_CALL(*this, OnDeviceChange()).Times(1);
ASSERT_TRUE(SimulateNullDefaultOutputDeviceChange());
testing::Mock::VerifyAndClear(this);
AdvanceLastDeviceChangeTime();
EXPECT_CALL(*this, OnDeviceChange()).Times(1);
ASSERT_TRUE(SimulateDefaultOutputDeviceChange(kFirstTestDevice));
testing::Mock::VerifyAndClear(this);
AdvanceLastDeviceChangeTime();
EXPECT_CALL(*this, OnDeviceChange()).Times(1);
ASSERT_TRUE(SimulateNullDefaultOutputDeviceChange());
}
} // namespace media
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