reduce_accept_language_browsertest.cc

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <optional>
#include <string_view>

#include "base/containers/fixed_flat_set.h"
#include "base/feature_list.h"
#include "base/metrics/histogram_base.h"
#include "base/metrics/statistics_recorder.h"
#include "base/no_destructor.h"
#include "base/ranges/algorithm.h"
#include "base/strings/strcat.h"
#include "base/strings/string_split.h"
#include "base/task/thread_pool/thread_pool_instance.h"
#include "base/test/metrics/histogram_tester.h"
#include "chrome/browser/content_settings/host_content_settings_map_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "chrome/test/base/ui_test_utils.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "components/content_settings/core/common/content_settings.h"
#include "components/content_settings/core/common/content_settings_pattern.h"
#include "components/content_settings/core/common/content_settings_types.h"
#include "components/embedder_support/switches.h"
#include "components/language/core/browser/language_prefs.h"
#include "components/language/core/browser/pref_names.h"
#include "components/metrics/content/subprocess_metrics_provider.h"
#include "components/prefs/pref_service.h"
#include "content/public/browser/origin_trials_controller_delegate.h"
#include "content/public/common/content_features.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/url_loader_interceptor.h"
#include "services/network/public/cpp/features.h"
#include "third_party/blink/public/common/features.h"
#include "ui/base/resource/resource_bundle.h"
#include "url/origin.h"

namespace {

URLLoaderInterceptor;
EmbeddedTestServer;

enum class FeatureEnableType { … };

struct ReduceAcceptLanguageTestOptions { … };

struct ServerPortAndValidOriginToken { … };

const char kLargeLanguages[] = …;

static constexpr const char kFirstPartyOriginUrl[] = …;
static constexpr char kThirdPartyOriginUrl[] = …;

// Notes: Only use to test origin trial feature with URLLoaderInterceptor.
// generate_token.py https://127.0.0.1:44444 DisableReduceAcceptLanguage
// --expire-timestamp=2000000000
static constexpr const char kValidFirstPartyToken[] = …;

// Notes: Only use to test origin trial feature with URLLoaderInterceptor.
// generate_token.py https://my-site.com:44444 DisableReduceAcceptLanguage
// --is-third-party --expire-timestamp=2000000000
static constexpr const char kValidThirdPartyToken[] = …;

// Notes: Only use to test origin trial feature with URLLoaderInterceptor.
// generate_token.py https://my-site.com:44444 DisableReduceAcceptLanguage
// --expire-timestamp=2000000000
static constexpr const char kValidMySiteFirstPartyToken[] = …;

static constexpr const char kInvalidOriginToken[] = …;

static constexpr const char kDeprecationTrialName[] = …;

}  // namespace

class ReduceAcceptLanguageBrowserTest : public InProcessBrowserTest { … };

// Browser tests that consider ReduceAcceptLanguage feature disabled.
class DisableFeatureReduceAcceptLanguageBrowserTest
    : public ReduceAcceptLanguageBrowserTest { … };

IN_PROC_BROWSER_TEST_F(DisableFeatureReduceAcceptLanguageBrowserTest,
                       NoAcceptLanguageHeader) { … }

IN_PROC_BROWSER_TEST_F(DisableFeatureReduceAcceptLanguageBrowserTest,
                       IframeNoAcceptLanguageHeader) { … }

// Tests same origin requests with the ReduceAcceptLanguage feature enabled.
class SameOriginReduceAcceptLanguageBrowserTest
    : public ReduceAcceptLanguageBrowserTest { … };

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       LargeLanguageListAndScriptDisable) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       EmptyUserAcceptLanguage) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       NoAvailLanguageHeader) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       NoContentLanguageHeader) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       EmptyAvailLanguageAcceptLanguages) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       AvailLanguageAcceptLanguagesWhiteSpace) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       SiteLanguageMatchNonPrimaryLanguage) { … }

// Verify no endless resend requests for the service worker navigation preload
// requests.
IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       ServiceWorkerNavigationPreload) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       SiteLanguageMatchPrimaryLanguage) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       SubresourceRequestNoRestart) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       SiteLanguageMatchMultipleLanguage) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       SiteLanguageDontMatchAnyPreferredLanguage) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       PersistedAcceptLanguageNotAvailable) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       IframeReduceAcceptLanguage) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       ImgSubresourceReduceAcceptLanguage) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       IframeNoContentLanguageInChild) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       IframeNoAvailLanguageAcceptLanguageInChild) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       IframeSameContentLanguage) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageBrowserTest,
                       IframeDifferentContentLanguage) { … }

class ThirdPartyReduceAcceptLanguageBrowserTest
    : public ReduceAcceptLanguageBrowserTest { … };

IN_PROC_BROWSER_TEST_F(ThirdPartyReduceAcceptLanguageBrowserTest,
                       IframeDifferentContentLanguage) { … }

IN_PROC_BROWSER_TEST_F(ThirdPartyReduceAcceptLanguageBrowserTest,
                       ThirdPartyIframeWithSubresourceRequests) { … }

IN_PROC_BROWSER_TEST_F(ThirdPartyReduceAcceptLanguageBrowserTest,
                       ThirdPartyIframeWithSubresourceRedirectRequests) { … }

class FencedFrameReduceAcceptLanguageBrowserTest
    : public ReduceAcceptLanguageBrowserTest { … };

IN_PROC_BROWSER_TEST_F(FencedFrameReduceAcceptLanguageBrowserTest,
                       CrossOriginFencedFrame) { … }

IN_PROC_BROWSER_TEST_F(FencedFrameReduceAcceptLanguageBrowserTest,
                       SameOriginFencedFrame) { … }

// Browser tests verify redirect same origin with different cases.
class SameOriginRedirectReduceAcceptLanguageBrowserTest
    : public ReduceAcceptLanguageBrowserTest { … };

IN_PROC_BROWSER_TEST_F(SameOriginRedirectReduceAcceptLanguageBrowserTest,
                       MatchFirstLanguage) { … }

IN_PROC_BROWSER_TEST_F(SameOriginRedirectReduceAcceptLanguageBrowserTest,
                       MatchSecondaryLanguage) { … }

// Browser tests verify redirect cross origin A to B with different cases.
class CrossOriginRedirectReduceAcceptLanguageBrowserTest
    : public ReduceAcceptLanguageBrowserTest { … };

IN_PROC_BROWSER_TEST_F(CrossOriginRedirectReduceAcceptLanguageBrowserTest,
                       RestartOnA) { … }

IN_PROC_BROWSER_TEST_F(CrossOriginRedirectReduceAcceptLanguageBrowserTest,
                       RestartOnB) { … }

IN_PROC_BROWSER_TEST_F(CrossOriginRedirectReduceAcceptLanguageBrowserTest,
                       RestartBothAB) { … }

// Browser tests verify same origin redirect when DisableReduceAcceptLanguage
// deprecation origin trial enable.
// NOTES: As URLLoaderInterceptor doesn't support redirect, testing redirects
// with origin trial requires EmbeddedTestServer to start on specific ports, we
// can only add a single test in this test class in case the different tests run
// parallel to cause server can't starts on specific ports. It will cause tests
// flakiness. Also, we need to make sure it doesn't share port with any other
// browser_tests.
class SameOriginRedirectReduceAcceptLanguageOTBrowserTest
    : public SameOriginRedirectReduceAcceptLanguageBrowserTest { … };

IN_PROC_BROWSER_TEST_F(SameOriginRedirectReduceAcceptLanguageOTBrowserTest,
                       MatchFirstLanguage) { … }

IN_PROC_BROWSER_TEST_F(SameOriginRedirectReduceAcceptLanguageOTBrowserTest,
                       MatchNonPrimaryLanguage) { … }

// Browser tests verify cross origin redirect when DisableReduceAcceptLanguage
// origin trial enable.
// NOTES: As URLLoaderInterceptor doesn't support redirect, testing redirects
// with origin trial requires EmbeddedTestServer to start on specific ports, we
// can only add a single test in this test class in case the different tests run
// parallel to cause server can't starts on specific ports. It will cause tests
// flakiness. Also, we need to make sure it doesn't share port with any other
// browser_tests.
class CrossOriginRedirectReduceAcceptLanguageOTBrowserTest
    : public CrossOriginRedirectReduceAcceptLanguageBrowserTest { … };

// Persistent origin trial doesn't works when a.com redirects to b.com and only
// a.com opt-in the deprecation origin trial, because persistent origin trial
// only parse and persist token for commit origin, in this redirect case b.com
// is always the commit origin.
IN_PROC_BROWSER_TEST_F(CrossOriginRedirectReduceAcceptLanguageOTBrowserTest,
                       RestartOnA) { … }

IN_PROC_BROWSER_TEST_F(CrossOriginRedirectReduceAcceptLanguageOTBrowserTest,
                       RestartOnB) { … }

IN_PROC_BROWSER_TEST_F(CrossOriginRedirectReduceAcceptLanguageOTBrowserTest,
                       RestartOnAB) { … }

// Browser tests verify same origin deprecation origin trial.
class SameOriginReduceAcceptLanguageDeprecationOTBrowserTest
    : public ReduceAcceptLanguageBrowserTest { … };

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageDeprecationOTBrowserTest,
                       FirstRequestMatchPrimaryLanguage) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageDeprecationOTBrowserTest,
                       FirstRequestMatchNonPrimaryLanguage) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageDeprecationOTBrowserTest,
                       FirstRequestMatchNonPrimaryLanguageWithCriticalTrial) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageDeprecationOTBrowserTest,
                       FirstRequestNoMatchLanguage) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageDeprecationOTBrowserTest,
                       IframeRequestRestart) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageDeprecationOTBrowserTest,
                       IframeRequestRestartWithCriticalTrial) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageDeprecationOTBrowserTest,
                       IframeRequestNoRestart) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageDeprecationOTBrowserTest,
                       IframeRequestNoRestartWithCriticalTrial) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageDeprecationOTBrowserTest,
                       ImgSubresourceRestart) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageDeprecationOTBrowserTest,
                       ImgSubresourceRestartWithCriticalTrial) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageDeprecationOTBrowserTest,
                       ImgSubresourceNoRestart) { … }

IN_PROC_BROWSER_TEST_F(SameOriginReduceAcceptLanguageDeprecationOTBrowserTest,
                       ImgSubresourceNoRestartWithCriticalTrial) { … }

// Browser tests verify third party deprecation origin trial.
class ThirdPartyReduceAcceptLanguageDeprecationOTBrowserTest
    : public ThirdPartyReduceAcceptLanguageBrowserTest { … };

// For third-party embedded as an iframe, the third-party can opt-in the
// deprecation trial as a first party deprecation origin trial.
IN_PROC_BROWSER_TEST_F(ThirdPartyReduceAcceptLanguageDeprecationOTBrowserTest,
                       IframeRequests) { … }

IN_PROC_BROWSER_TEST_F(ThirdPartyReduceAcceptLanguageDeprecationOTBrowserTest,
                       JavaScriptRequest) { … }
chromium/chrome/browser/reduce_accept_language/reduce_accept_language_browsertest.cc
