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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/glic/media/glic_media_integration.h"
#include "base/test/mock_callback.h"
#include "base/test/scoped_feature_list.h"
#include "chrome/browser/accessibility/live_caption/live_caption_controller_factory.h"
#include "chrome/browser/glic/media/glic_media_context.h"
#include "chrome/browser/prefs/browser_prefs.h"
#include "chrome/test/base/chrome_render_view_host_test_harness.h"
#include "components/live_caption/live_caption_controller.h"
#include "components/live_caption/pref_names.h"
#include "components/optimization_guide/content/browser/page_content_proto_provider.h"
#include "components/pref_registry/pref_registry_syncable.h"
#include "components/prefs/testing_pref_service.h"
#include "components/sync_preferences/testing_pref_service_syncable.h"
#include "content/public/browser/web_contents.h"
#include "media/base/media_switches.h"
#include "testing/gtest/include/gtest/gtest.h"
using content::WebContents;
namespace glic {
class GlicMediaIntegrationTest : public ChromeRenderViewHostTestHarness {
public:
void SetUp() override {
ChromeRenderViewHostTestHarness::SetUp();
// Return a mock Live Caption controller.
auto controller = CreateLiveCaptionController();
live_caption_controller_ = controller.get();
captions::LiveCaptionControllerFactory::GetInstance()->SetTestingFactory(
web_contents()->GetBrowserContext(),
base::BindOnce(
[](std::unique_ptr<captions::LiveCaptionController> controller,
content::BrowserContext* context)
-> std::unique_ptr<KeyedService> {
return std::move(controller);
},
std::move(controller)));
}
void TearDown() override {
live_caption_controller_ = nullptr;
pref_registry_ = nullptr;
ChromeRenderViewHostTestHarness::TearDown();
}
// ChromeRenderViewHostTestHarness
std::unique_ptr<TestingProfile> CreateTestingProfile() override {
auto pref_service =
std::make_unique<sync_preferences::TestingPrefServiceSyncable>();
pref_registry_ = pref_service->registry();
RegisterUserProfilePrefs(pref_registry_);
return TestingProfile::Builder()
.SetPrefService(std::move(pref_service))
.AddTestingFactories(GetTestingFactories())
.Build();
}
// Get the MediaIntegration instance, after doing some work to register prefs
GlicMediaIntegration* GetIntegration() {
scoped_feature_list_.emplace(media::kHeadlessLiveCaption);
return GlicMediaIntegration::GetFor(web_contents());
}
GlicMediaContext* GetContext() {
return GlicMediaContext::GetIfExistsFor(web_contents());
}
captions::LiveCaptionController* live_caption_controller() {
return live_caption_controller_;
}
PrefService* pref_service() {
return Profile::FromBrowserContext(web_contents()->GetBrowserContext())
->GetPrefs();
}
bool get_headless_pref() {
return pref_service()->GetBoolean(prefs::kHeadlessCaptionEnabled);
}
std::unique_ptr<captions::LiveCaptionController>
CreateLiveCaptionController() {
return std::make_unique<captions::LiveCaptionController>(
pref_service(),
/*global_prefs=*/nullptr, "application_locale", browser_context(),
/*delegate=*/nullptr);
}
private:
TestingPrefServiceSimple pref_service_;
std::optional<base::test::ScopedFeatureList> scoped_feature_list_;
raw_ptr<captions::LiveCaptionController> live_caption_controller_ = nullptr;
raw_ptr<user_prefs::PrefRegistrySyncable> pref_registry_ = nullptr;
};
TEST_F(GlicMediaIntegrationTest, GetWithNullReturnsNull) {
// Make sure this doesn't crash.
EXPECT_EQ(GlicMediaIntegration::GetFor(nullptr), nullptr);
}
TEST_F(GlicMediaIntegrationTest, GetReturnsNullIfSwitchIsOff) {
EXPECT_EQ(GlicMediaIntegration::GetFor(web_contents()), nullptr);
}
TEST_F(GlicMediaIntegrationTest, GetReturnsNonNullIfSwitchIsOn) {
// Right now, this doesn't depend on the headless pref, but likely it should.
EXPECT_NE(GetIntegration(), nullptr);
}
TEST_F(GlicMediaIntegrationTest, ContextContainsTranscript) {
auto* integration = GetIntegration();
// Send the string in pieces, mixing final and non-final ones.
// It would be nice if we could set the max content size for testing.
const std::string test_cap_1("ABC");
const std::string test_cap_2("DEF");
const std::string test_cap_3("XYZ"); // Should be ignored in all cases.
const std::string test_cap_4("GHIJ");
live_caption_controller()->DispatchTranscription(
web_contents(), nullptr,
media::SpeechRecognitionResult(test_cap_1, /*is_final=*/true));
live_caption_controller()->DispatchTranscription(
web_contents(), nullptr,
media::SpeechRecognitionResult(test_cap_2, /*is_final=*/true));
// Non-final captions should be ignored.
live_caption_controller()->DispatchTranscription(
web_contents(), nullptr,
media::SpeechRecognitionResult(test_cap_3, /*is_final=*/false));
// nullptr `web_contents` should be ignored.
live_caption_controller()->DispatchTranscription(
/*web_contents=*/nullptr, nullptr,
media::SpeechRecognitionResult(test_cap_3, /*is_final=*/true));
live_caption_controller()->DispatchTranscription(
web_contents(), nullptr,
media::SpeechRecognitionResult(test_cap_4, /*is_final=*/true));
// Expect a leaf node with the entire context.
optimization_guide::proto::ContentNode root_node;
integration->AppendContext(web_contents(), &root_node);
EXPECT_EQ(root_node.children_nodes_size(), 0);
EXPECT_TRUE(root_node.has_content_attributes());
EXPECT_EQ(root_node.content_attributes().text_data().text_content(),
"ABCDEFGHIJ");
}
TEST_F(GlicMediaIntegrationTest, ContextContainsNoTranscript) {
auto* integration = GetIntegration();
// Send no strings.
// Expect a leaf node with any text.
optimization_guide::proto::ContentNode root_node;
integration->AppendContext(web_contents(), &root_node);
EXPECT_EQ(root_node.children_nodes_size(), 0);
EXPECT_TRUE(root_node.has_content_attributes());
EXPECT_GT(root_node.content_attributes().text_data().text_content().length(),
0u);
}
TEST_F(GlicMediaIntegrationTest, HeadlessPrefTurnsOnAndOff) {
// Verify that the headless pref turns on with the integration, and turns
// back off the next time Live Caption starts. This is temporary behavior.
EXPECT_FALSE(get_headless_pref());
GetIntegration();
EXPECT_TRUE(get_headless_pref());
auto controller = CreateLiveCaptionController();
EXPECT_FALSE(get_headless_pref());
}
TEST_F(GlicMediaIntegrationTest, NullWebContentsIsOkay) {
// Make sure that cases where no WebContents is provided don't crash. This
// includes cases where there is no media context for the given contents.
optimization_guide::proto::ContentNode root_node;
GetIntegration()->AppendContext(/*web_contents=*/nullptr, &root_node);
// As long as nothing bad happens, it's good.
}
TEST_F(GlicMediaIntegrationTest, PeerConnectionPreventsTranscription) {
auto* integration = GetIntegration();
// This should prevent the transcription from being recorded.
integration->OnPeerConnectionAddedForTesting(web_contents());
auto* context = GetContext();
EXPECT_TRUE(context->is_excluded_from_transcript_for_testing());
}
} // namespace glic
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