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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 "chrome/browser/ui/views/ash/volume_controller_chromeos.h"
#include "chrome/browser/chromeos/audio/audio_handler.h"
#include "chrome/browser/chromeos/audio/audio_mixer.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "chrome/test/base/ui_test_utils.h"
#include "ui/base/accelerators/accelerator.h"
namespace {
class MockAudioMixer : public chromeos::AudioMixer {
public:
MockAudioMixer()
: volume_(0.0),
is_muted_(false) {
}
virtual void Init() OVERRIDE {
}
virtual double GetVolumePercent() OVERRIDE {
return volume_;
}
virtual void SetVolumePercent(double percent) OVERRIDE {
volume_ = percent;
}
virtual bool IsMuted() OVERRIDE {
return is_muted_;
}
virtual void SetMuted(bool do_mute) OVERRIDE {
is_muted_ = do_mute;
}
private:
double volume_;
bool is_muted_;
DISALLOW_COPY_AND_ASSIGN(MockAudioMixer);
};
// This class has to be browsertest because AudioHandler uses prefs_service.
class VolumeControllerTest : public InProcessBrowserTest {
public:
VolumeControllerTest() {}
virtual void SetUpOnMainThread() OVERRIDE {
// First we should shutdown the default audio handler.
chromeos::AudioHandler::Shutdown();
audio_mixer_ = new MockAudioMixer;
chromeos::AudioHandler::InitializeForTesting(audio_mixer_);
}
virtual void CleanUpOnMainThread() OVERRIDE {
chromeos::AudioHandler::Shutdown();
audio_mixer_ = NULL;
}
protected:
void VolumeMute() {
volume_controller_.HandleVolumeMute(ui::Accelerator());
}
void VolumeUp() {
volume_controller_.HandleVolumeUp(ui::Accelerator());
}
void VolumeDown() {
volume_controller_.HandleVolumeDown(ui::Accelerator());
}
MockAudioMixer* audio_mixer() { return audio_mixer_; }
private:
VolumeController volume_controller_;
MockAudioMixer* audio_mixer_;
DISALLOW_COPY_AND_ASSIGN(VolumeControllerTest);
};
IN_PROC_BROWSER_TEST_F(VolumeControllerTest, VolumeUpAndDown) {
// Set initial value as 50%
audio_mixer()->SetVolumePercent(50.0);
double initial_volume = audio_mixer()->GetVolumePercent();
VolumeUp();
EXPECT_LT(initial_volume, audio_mixer()->GetVolumePercent());
VolumeDown();
EXPECT_DOUBLE_EQ(initial_volume, audio_mixer()->GetVolumePercent());
VolumeDown();
EXPECT_GT(initial_volume, audio_mixer()->GetVolumePercent());
}
IN_PROC_BROWSER_TEST_F(VolumeControllerTest, VolumeDownToZero) {
// Setting to very small
audio_mixer()->SetVolumePercent(0.1);
VolumeDown();
EXPECT_DOUBLE_EQ(0.0, audio_mixer()->GetVolumePercent());
VolumeDown();
EXPECT_DOUBLE_EQ(0.0, audio_mixer()->GetVolumePercent());
VolumeUp();
EXPECT_LT(0.0, audio_mixer()->GetVolumePercent());
}
IN_PROC_BROWSER_TEST_F(VolumeControllerTest, VolumeUpTo100) {
// Setting to almost max
audio_mixer()->SetVolumePercent(99.0);
VolumeUp();
EXPECT_DOUBLE_EQ(100.0, audio_mixer()->GetVolumePercent());
VolumeUp();
EXPECT_DOUBLE_EQ(100.0, audio_mixer()->GetVolumePercent());
VolumeDown();
EXPECT_GT(100.0, audio_mixer()->GetVolumePercent());
}
IN_PROC_BROWSER_TEST_F(VolumeControllerTest, Mutes) {
ASSERT_FALSE(audio_mixer()->IsMuted());
double initial_volume = audio_mixer()->GetVolumePercent();
VolumeMute();
EXPECT_TRUE(audio_mixer()->IsMuted());
// Further mute buttons doesn't have effects.
VolumeMute();
EXPECT_TRUE(audio_mixer()->IsMuted());
// Right after the volume up after set_mute recovers to original volume.
VolumeUp();
EXPECT_FALSE(audio_mixer()->IsMuted());
EXPECT_DOUBLE_EQ(initial_volume, audio_mixer()->GetVolumePercent());
VolumeMute();
// After the volume down, the volume goes down to zero explicitly.
VolumeDown();
EXPECT_TRUE(audio_mixer()->IsMuted());
EXPECT_DOUBLE_EQ(0.0, audio_mixer()->GetVolumePercent());
// Thus, further VolumeUp doesn't recover the volume, it's just slightly
// bigger than 0.
VolumeUp();
EXPECT_LT(0.0, audio_mixer()->GetVolumePercent());
EXPECT_GT(initial_volume, audio_mixer()->GetVolumePercent());
}
} // namespace
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