// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Unit tests for the TTS Controller.
#include "chrome/browser/speech/tts_controller_delegate_impl.h"
#include "base/memory/ptr_util.h"
#include "base/memory/raw_ptr.h"
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/common/pref_names.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/testing_pref_service.h"
#include "content/public/browser/tts_controller.h"
#include "content/public/browser/tts_platform.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/public/mojom/speech/speech_synthesis.mojom.h"
// Subclass of TtsController with a public ctor and dtor.
class MockTtsControllerDelegate : public TtsControllerDelegateImpl {
public:
MockTtsControllerDelegate() = default;
~MockTtsControllerDelegate() override = default;
raw_ptr<PrefService> pref_service_ = nullptr;
private:
const PrefService* GetPrefService(content::TtsUtterance* utterance) override {
return pref_service_;
}
};
TEST(TtsControllerDelegateImplTest, TestTtsControllerUtteranceDefaults) {
std::unique_ptr<MockTtsControllerDelegate> tts_controller_delegate =
std::make_unique<MockTtsControllerDelegate>();
double rate = blink::mojom::kSpeechSynthesisDoublePrefNotSet;
double pitch = blink::mojom::kSpeechSynthesisDoublePrefNotSet;
double volume = blink::mojom::kSpeechSynthesisDoublePrefNotSet;
std::unique_ptr<content::TtsUtterance> utterance1 =
content::TtsUtterance::Create();
tts_controller_delegate->UpdateUtteranceDefaultsFromPrefs(
utterance1.get(), &rate, &pitch, &volume);
// Updated to global defaults.
EXPECT_EQ(blink::mojom::kSpeechSynthesisDefaultRate, rate);
EXPECT_EQ(blink::mojom::kSpeechSynthesisDefaultPitch, pitch);
EXPECT_EQ(blink::mojom::kSpeechSynthesisDefaultVolume, volume);
// Now we will set prefs and expect those to be used as defaults.
rate = blink::mojom::kSpeechSynthesisDoublePrefNotSet;
pitch = blink::mojom::kSpeechSynthesisDoublePrefNotSet;
volume = blink::mojom::kSpeechSynthesisDoublePrefNotSet;
TestingPrefServiceSimple pref_service_;
pref_service_.registry()->RegisterDoublePref(prefs::kTextToSpeechRate, 1.5);
pref_service_.registry()->RegisterDoublePref(prefs::kTextToSpeechPitch, 2.0);
pref_service_.registry()->RegisterDoublePref(prefs::kTextToSpeechVolume, 0.5);
tts_controller_delegate->pref_service_ = &pref_service_;
std::unique_ptr<content::TtsUtterance> utterance2 =
content::TtsUtterance::Create();
tts_controller_delegate->UpdateUtteranceDefaultsFromPrefs(
utterance2.get(), &rate, &pitch, &volume);
// Updated to pref values.
EXPECT_EQ(1.5f, rate);
EXPECT_EQ(2.0f, pitch);
EXPECT_EQ(0.5f, volume);
// If we explicitly set rate, pitch and volume, they should not be changed.
rate = 1.1f;
pitch = 1.2f;
volume = 1.3f;
std::unique_ptr<content::TtsUtterance> utterance3 =
content::TtsUtterance::Create();
tts_controller_delegate->UpdateUtteranceDefaultsFromPrefs(
utterance3.get(), &rate, &pitch, &volume);
// Values should not change.
EXPECT_EQ(1.1f, rate);
EXPECT_EQ(1.2f, pitch);
EXPECT_EQ(1.3f, volume);
// If we explicitly set rate, pitch and volume to the default values, they
// should not be changed.
rate = blink::mojom::kSpeechSynthesisDefaultRate;
pitch = blink::mojom::kSpeechSynthesisDefaultPitch;
volume = blink::mojom::kSpeechSynthesisDefaultVolume;
std::unique_ptr<content::TtsUtterance> utterance4 =
content::TtsUtterance::Create();
tts_controller_delegate->UpdateUtteranceDefaultsFromPrefs(
utterance4.get(), &rate, &pitch, &volume);
// Values should not change.
EXPECT_EQ(blink::mojom::kSpeechSynthesisDefaultRate, rate);
EXPECT_EQ(blink::mojom::kSpeechSynthesisDefaultPitch, pitch);
EXPECT_EQ(blink::mojom::kSpeechSynthesisDefaultVolume, volume);
}
TEST(TtsControllerDelegateImplTest, GetPreferredVoiceIdsForUtterance) {
MockTtsControllerDelegate delegate;
std::unique_ptr<content::TtsUtterance> utterance =
content::TtsUtterance::Create();
auto ids = delegate.GetPreferredVoiceIdsForUtterance(utterance.get());
EXPECT_EQ(nullptr, ids.get());
TestingPrefServiceSimple pref_service;
// Uses default pref voices.
auto lang_to_voices =
base::Value::Dict()
.Set("es", "{\"name\":\"Voice7\",\"extension\":\"id7\"}")
.Set("he", "{\"name\":\"Voice8\",\"extension\":\"id8\"}")
.Set("noLanguageCode", "{\"name\":\"Android\",\"extension\":\"x\"}");
pref_service.registry()->RegisterDictionaryPref(
prefs::kTextToSpeechLangToVoiceName, std::move(lang_to_voices));
delegate.pref_service_ = &pref_service;
ids = delegate.GetPreferredVoiceIdsForUtterance(utterance.get());
ASSERT_TRUE(ids.get());
EXPECT_FALSE(ids->lang_voice_id.has_value());
EXPECT_FALSE(ids->locale_voice_id.has_value());
ASSERT_TRUE(ids->any_locale_voice_id.has_value());
EXPECT_EQ("Android", ids->any_locale_voice_id->name);
EXPECT_EQ("x", ids->any_locale_voice_id->id);
// Change the language of the Utterance to 'es' which should match one of the
// registered keys.
utterance->SetLang("es");
ids = delegate.GetPreferredVoiceIdsForUtterance(utterance.get());
ASSERT_TRUE(ids.get());
ASSERT_TRUE(ids->lang_voice_id.has_value());
EXPECT_EQ("Voice7", ids->lang_voice_id->name);
EXPECT_EQ("id7", ids->lang_voice_id->id);
EXPECT_FALSE(ids->locale_voice_id.has_value());
ASSERT_TRUE(ids->any_locale_voice_id.has_value());
EXPECT_EQ("Android", ids->any_locale_voice_id->name);
EXPECT_EQ("x", ids->any_locale_voice_id->id);
// Change the application locale to 'he' which should match one of the
// registered keys.
g_browser_process->SetApplicationLocale("he");
ids = delegate.GetPreferredVoiceIdsForUtterance(utterance.get());
ASSERT_TRUE(ids.get());
ASSERT_TRUE(ids->lang_voice_id.has_value());
EXPECT_EQ("Voice7", ids->lang_voice_id->name);
EXPECT_EQ("id7", ids->lang_voice_id->id);
EXPECT_TRUE(ids->locale_voice_id.has_value());
EXPECT_EQ("Voice8", ids->locale_voice_id->name);
EXPECT_EQ("id8", ids->locale_voice_id->id);
ASSERT_TRUE(ids->any_locale_voice_id.has_value());
EXPECT_EQ("Android", ids->any_locale_voice_id->name);
EXPECT_EQ("x", ids->any_locale_voice_id->id);
}
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