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// Copyright 2024 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/accessibility/phrase_segmentation/dependency_parser_model_loader.h"
#include "base/base_paths.h"
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/path_service.h"
#include "base/run_loop.h"
#include "base/task/thread_pool/thread_pool_instance.h"
#include "base/test/metrics/histogram_tester.h"
#include "base/test/scoped_feature_list.h"
#include "base/threading/thread_restrictions.h"
#include "build/build_config.h"
#include "chrome/browser/accessibility/phrase_segmentation/dependency_parser_model_loader_factory.h"
#include "chrome/browser/optimization_guide/optimization_guide_keyed_service.h"
#include "chrome/browser/optimization_guide/optimization_guide_keyed_service_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "components/metrics/content/subprocess_metrics_provider.h"
#include "components/optimization_guide/core/model_util.h"
#include "components/optimization_guide/core/optimization_guide_test_util.h"
#include "components/optimization_guide/core/test_model_info_builder.h"
#include "components/optimization_guide/proto/models.pb.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
#include "ui/accessibility/accessibility_features.h"
namespace {
// Fetch and calculate the total number of samples from all the bins for
// |histogram_name|. Note: from some browertests run (such as chromeos) there
// might be two profiles created, and this will return the total sample count
// across profiles.
int GetTotalHistogramSamples(const base::HistogramTester* histogram_tester,
const std::string& histogram_name) {
std::vector<base::Bucket> buckets =
histogram_tester->GetAllSamples(histogram_name);
int total = 0;
for (const auto& bucket : buckets) {
total += bucket.count;
}
return total;
}
// Retries fetching |histogram_name| until it contains at least |count| samples.
int RetryForHistogramUntilCountReached(
const base::HistogramTester* histogram_tester,
const std::string& histogram_name,
int count) {
while (true) {
base::ThreadPoolInstance::Get()->FlushForTesting();
base::RunLoop().RunUntilIdle();
int total = GetTotalHistogramSamples(histogram_tester, histogram_name);
if (total >= count) {
return total;
}
content::FetchHistogramsFromChildProcesses();
metrics::SubprocessMetricsProvider::MergeHistogramDeltasForTesting();
base::RunLoop().RunUntilIdle();
}
}
class DependencyParserModelLoaderDisabledBrowserTest
: public InProcessBrowserTest {
public:
DependencyParserModelLoaderDisabledBrowserTest() {
scoped_feature_list_.InitAndDisableFeature(
features::kReadAnythingReadAloudPhraseHighlighting);
}
void SetUp() override {
origin_server_ = std::make_unique<net::EmbeddedTestServer>(
net::EmbeddedTestServer::TYPE_HTTPS);
origin_server_->ServeFilesFromSourceDirectory(
"chrome/test/data/optimization_guide");
ASSERT_TRUE(origin_server_->Start());
english_url_ = origin_server_->GetURL("/hello_world.html");
InProcessBrowserTest::SetUp();
}
~DependencyParserModelLoaderDisabledBrowserTest() override = default;
const GURL& english_url() const { return english_url_; }
private:
GURL english_url_;
std::unique_ptr<net::EmbeddedTestServer> origin_server_;
base::test::ScopedFeatureList scoped_feature_list_;
};
IN_PROC_BROWSER_TEST_F(DependencyParserModelLoaderDisabledBrowserTest,
DependencyParserModelLoaderDisabled) {
EXPECT_FALSE(
DependencyParserModelLoaderFactory::GetForProfile(browser()->profile()));
}
class DependencyParserModelLoaderBrowserTest
: public DependencyParserModelLoaderDisabledBrowserTest {
public:
DependencyParserModelLoaderBrowserTest() {
scoped_feature_list_.InitWithFeatures(
{features::kReadAnythingReadAloud,
features::kReadAnythingReadAloudPhraseHighlighting},
{});
}
void SetUp() override {
origin_server_ = std::make_unique<net::EmbeddedTestServer>(
net::EmbeddedTestServer::TYPE_HTTPS);
origin_server_->ServeFilesFromSourceDirectory(
"chrome/test/data/optimization_guide");
origin_server_->RegisterRequestHandler(base::BindRepeating(
&DependencyParserModelLoaderBrowserTest::RequestHandler,
base::Unretained(this)));
ASSERT_TRUE(origin_server_->Start());
english_url_ = origin_server_->GetURL("/hello_world.html");
InProcessBrowserTest::SetUp();
}
~DependencyParserModelLoaderBrowserTest() override = default;
DependencyParserModelLoader* dependency_parser_model_service() {
return DependencyParserModelLoaderFactory::GetForProfile(
browser()->profile());
}
const GURL& english_url() const { return english_url_; }
private:
std::unique_ptr<net::test_server::HttpResponse> RequestHandler(
const net::test_server::HttpRequest& request) {
std::string path_value;
// This script is render blocking in the HTML, but is intentionally slow.
// This provides important time between commit and first layout for model
// requests to make it to the renderer, reducing flakes.
if (request.GetURL().path() == "/slow-first-layout.js") {
std::unique_ptr<net::test_server::DelayedHttpResponse> resp =
std::make_unique<net::test_server::DelayedHttpResponse>(
base::Milliseconds(500));
resp->set_code(net::HTTP_OK);
resp->set_content_type("application/javascript");
resp->set_content(std::string());
return resp;
}
return nullptr;
}
base::test::ScopedFeatureList scoped_feature_list_;
GURL english_url_;
std::unique_ptr<net::EmbeddedTestServer> origin_server_;
};
base::FilePath model_file_path() {
base::FilePath model_file_path;
EXPECT_TRUE(
base::PathService::Get(base::DIR_SRC_TEST_DATA_ROOT, &model_file_path));
// TODO(b/339037155): Update this to a path that leads to an actual model.
return model_file_path.AppendASCII(
"chrome/test/data/accessibility/fixed_size_document.html");
}
IN_PROC_BROWSER_TEST_F(DependencyParserModelLoaderBrowserTest,
DependencyParserModelLoaderEnabled) {
EXPECT_TRUE(dependency_parser_model_service());
}
IN_PROC_BROWSER_TEST_F(DependencyParserModelLoaderBrowserTest,
DependencyParserModelLoaderEnabled_OffTheRecord) {
EXPECT_TRUE(DependencyParserModelLoaderFactory::GetForProfile(
browser()->profile()->GetPrimaryOTRProfile(/*create_if_needed=*/true)));
}
IN_PROC_BROWSER_TEST_F(DependencyParserModelLoaderBrowserTest,
DependencyParserModelReadyOnRequest) {
base::ScopedAllowBlockingForTesting allow_io_for_test_setup;
base::HistogramTester histogram_tester;
ASSERT_TRUE(dependency_parser_model_service());
OptimizationGuideKeyedServiceFactory::GetForProfile(browser()->profile())
->OverrideTargetModelForTesting(
optimization_guide::proto::OPTIMIZATION_TARGET_PHRASE_SEGMENTATION,
optimization_guide::TestModelInfoBuilder()
.SetModelFilePath(model_file_path())
.Build());
RetryForHistogramUntilCountReached(
&histogram_tester,
"Accessibility.DependencyParserModelLoader.DependencyParserModel."
"WasLoaded",
1);
histogram_tester.ExpectUniqueSample(
"Accessibility.DependencyParserModelLoader.DependencyParserModel."
"WasLoaded",
true, 1);
base::File model_file =
dependency_parser_model_service()->GetDependencyParserModelFile();
EXPECT_TRUE(model_file.IsValid());
}
IN_PROC_BROWSER_TEST_F(DependencyParserModelLoaderBrowserTest,
DependencyParserModelLoadedAfterRequest) {
base::ScopedAllowBlockingForTesting allow_io_for_test_setup;
base::HistogramTester histogram_tester;
ASSERT_TRUE(dependency_parser_model_service());
EXPECT_FALSE(dependency_parser_model_service()->IsModelAvailable());
std::unique_ptr<base::RunLoop> run_loop = std::make_unique<base::RunLoop>();
dependency_parser_model_service()->NotifyOnModelFileAvailable(base::BindOnce(
[](base::RunLoop* run_loop,
DependencyParserModelLoader* dependency_parser_model_service,
bool is_available) {
EXPECT_TRUE(dependency_parser_model_service->IsModelAvailable());
EXPECT_TRUE(is_available);
run_loop->Quit();
},
run_loop.get(), dependency_parser_model_service()));
OptimizationGuideKeyedServiceFactory::GetForProfile(browser()->profile())
->OverrideTargetModelForTesting(
optimization_guide::proto::OPTIMIZATION_TARGET_PHRASE_SEGMENTATION,
optimization_guide::TestModelInfoBuilder()
.SetModelFilePath(model_file_path())
.Build());
RetryForHistogramUntilCountReached(
&histogram_tester,
"Accessibility.DependencyParserModelLoader.DependencyParserModel."
"WasLoaded",
1);
histogram_tester.ExpectUniqueSample(
"Accessibility.DependencyParserModelLoader.DependencyParserModel."
"WasLoaded",
true, 1);
run_loop->Run();
base::File model_file =
dependency_parser_model_service()->GetDependencyParserModelFile();
EXPECT_TRUE(model_file.IsValid());
}
IN_PROC_BROWSER_TEST_F(DependencyParserModelLoaderBrowserTest,
InvalidModelWhenLoading) {
base::ScopedAllowBlockingForTesting allow_io_for_test_setup;
base::HistogramTester histogram_tester;
ASSERT_TRUE(dependency_parser_model_service());
OptimizationGuideKeyedServiceFactory::GetForProfile(browser()->profile())
->OverrideTargetModelForTesting(
optimization_guide::proto::OPTIMIZATION_TARGET_PHRASE_SEGMENTATION,
optimization_guide::TestModelInfoBuilder()
.SetModelFilePath(
base::FilePath(optimization_guide::StringToFilePath(
optimization_guide::kTestAbsoluteFilePath)
.value()))
.Build());
RetryForHistogramUntilCountReached(
&histogram_tester,
"Accessibility.DependencyParserModelLoader.DependencyParserModel."
"WasLoaded",
1);
histogram_tester.ExpectUniqueSample(
"Accessibility.DependencyParserModelLoader.DependencyParserModel."
"WasLoaded",
false, 1);
}
IN_PROC_BROWSER_TEST_F(DependencyParserModelLoaderBrowserTest,
ModelUpdateFromOptimizationGuide) {
base::ScopedAllowBlockingForTesting allow_io_for_test_setup;
base::HistogramTester histogram_tester;
ASSERT_TRUE(dependency_parser_model_service());
OptimizationGuideKeyedServiceFactory::GetForProfile(browser()->profile())
->OverrideTargetModelForTesting(
optimization_guide::proto::OPTIMIZATION_TARGET_PHRASE_SEGMENTATION,
optimization_guide::TestModelInfoBuilder()
.SetModelFilePath(model_file_path())
.Build());
RetryForHistogramUntilCountReached(
&histogram_tester,
"Accessibility.DependencyParserModelLoader.DependencyParserModel."
"WasLoaded",
1);
histogram_tester.ExpectUniqueSample(
"Accessibility.DependencyParserModelLoader.DependencyParserModel."
"WasLoaded",
true, 1);
OptimizationGuideKeyedServiceFactory::GetForProfile(browser()->profile())
->OverrideTargetModelForTesting(
optimization_guide::proto::OPTIMIZATION_TARGET_PHRASE_SEGMENTATION,
optimization_guide::TestModelInfoBuilder()
.SetModelFilePath(model_file_path())
.Build());
RetryForHistogramUntilCountReached(
&histogram_tester,
"Accessibility.DependencyParserModelLoader.DependencyParserModel."
"WasLoaded",
2);
histogram_tester.ExpectUniqueSample(
"Accessibility.DependencyParserModelLoader.DependencyParserModel."
"WasLoaded",
true, 2);
base::File model_file =
dependency_parser_model_service()->GetDependencyParserModelFile();
EXPECT_TRUE(model_file.IsValid());
}
} // namespace
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