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content / browser / reduce_accept_language / reduce_accept_language_utils_unittest.cc [blame]
// 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 "content/browser/reduce_accept_language/reduce_accept_language_utils.h"
#include <array>
#include "base/strings/strcat.h"
#include "base/strings/string_util.h"
#include "base/test/scoped_feature_list.h"
#include "content/browser/reduce_accept_language/reduce_accept_language_throttle.h"
#include "content/public/browser/reduce_accept_language_controller_delegate.h"
#include "content/public/test/browser_task_environment.h"
#include "content/public/test/test_browser_context.h"
#include "content/test/mock_reduce_accept_language_controller_delegate.h"
#include "content/test/test_render_frame_host.h"
#include "content/test/test_render_view_host.h"
#include "content/test/test_web_contents.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "net/http/http_response_headers.h"
#include "services/network/public/cpp/avail_language_header_parser.h"
#include "services/network/public/cpp/content_language_parser.h"
#include "services/network/public/cpp/features.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"
namespace content {
namespace {
mojo::PendingAssociatedRemote<mojom::Frame> CreateStubFrameRemote() {
return TestRenderFrameHost::CreateStubFrameRemote();
}
mojo::PendingReceiver<blink::mojom::BrowserInterfaceBroker>
CreateStubBrowserInterfaceBrokerReceiver() {
return TestRenderFrameHost::CreateStubBrowserInterfaceBrokerReceiver();
}
blink::mojom::PolicyContainerBindParamsPtr
CreateStubPolicyContainerBindParams() {
return TestRenderFrameHost::CreateStubPolicyContainerBindParams();
}
mojo::PendingAssociatedReceiver<blink::mojom::AssociatedInterfaceProvider>
CreateStubAssociatedInterfaceProviderReceiver() {
return TestRenderFrameHost::CreateStubAssociatedInterfaceProviderReceiver();
}
static constexpr const char kDeprecationTrialName[] =
"DisableReduceAcceptLanguage";
} // namespace
class MockOriginTrialsDelegate
: public content::OriginTrialsControllerDelegate {
public:
~MockOriginTrialsDelegate() override = default;
base::flat_map<url::Origin, base::flat_set<std::string>> persisted_trials_;
base::flat_set<std::string> GetPersistedTrialsForOrigin(
const url::Origin& origin,
const url::Origin& top_level_origin,
base::Time current_time) override {
return {};
}
bool IsFeaturePersistedForOrigin(const url::Origin& origin,
const url::Origin& top_level_origin,
blink::mojom::OriginTrialFeature feature,
const base::Time current_time) override {
std::string trial_name = "";
switch (feature) {
case blink::mojom::OriginTrialFeature::kDisableReduceAcceptLanguage:
trial_name = kDeprecationTrialName;
break;
default:
break;
}
const auto& it = persisted_trials_.find(origin);
EXPECT_FALSE(trial_name.empty());
return it != persisted_trials_.end() && it->second.contains(trial_name);
}
void PersistTrialsFromTokens(
const url::Origin& origin,
const url::Origin& top_level_origin,
const base::span<const std::string> header_tokens,
const base::Time current_time,
std::optional<ukm::SourceId> source_id) override {}
void PersistAdditionalTrialsFromTokens(
const url::Origin& origin,
const url::Origin& top_level_origin,
const base::span<const url::Origin> script_origins,
const base::span<const std::string> header_tokens,
const base::Time current_time,
std::optional<ukm::SourceId> source_id) override {}
void ClearPersistedTokens() override { persisted_trials_.clear(); }
void AddPersistedTrialForTest(std::string_view url,
std::string_view trial_name) {
url::Origin key = url::Origin::Create(GURL(url));
persisted_trials_[key].emplace(trial_name);
}
};
class AcceptLanguageUtilsTests : public RenderViewHostImplTestHarness {
public:
AcceptLanguageUtilsTests()
: response_headers_(base::MakeRefCounted<net::HttpResponseHeaders>("")) {}
AcceptLanguageUtilsTests(const AcceptLanguageUtilsTests&) = delete;
AcceptLanguageUtilsTests& operator=(const AcceptLanguageUtilsTests&) = delete;
~AcceptLanguageUtilsTests() override {
blink::TrialTokenValidator::ResetOriginTrialPolicyGetter();
}
static constexpr char kFirstPartyUrl[] = "https://mysite.com:4444";
static constexpr char kThirdPartyOriginUrl[] = "https://mysite.com:4445";
void AddOneChildNode() {
main_test_rfh()->OnCreateChildFrame(
14, CreateStubFrameRemote(), CreateStubBrowserInterfaceBrokerReceiver(),
CreateStubPolicyContainerBindParams(),
CreateStubAssociatedInterfaceProviderReceiver(),
blink::mojom::TreeScopeType::kDocument, std::string(), "uniqueName0",
false, blink::LocalFrameToken(), base::UnguessableToken::Create(),
blink::DocumentToken(), blink::FramePolicy(),
blink::mojom::FrameOwnerProperties(),
blink::FrameOwnerElementType::kIframe, ukm::kInvalidSourceId);
}
bool ParseAndPersist(const GURL& url,
ReduceAcceptLanguageUtils& reduce_language_utils,
const std::string& accept_language,
const std::string& content_language,
const std::string& avail_language) {
net::HttpRequestHeaders headers;
headers.SetHeader(net::HttpRequestHeaders::kAcceptLanguage,
accept_language);
auto parsed_headers = network::mojom::ParsedHeaders::New();
parsed_headers->content_language =
network::ParseContentLanguages(content_language);
parsed_headers->avail_language =
network::ParseAvailLanguage(avail_language);
return reduce_language_utils.ReadAndPersistAcceptLanguageForNavigation(
url::Origin::Create(url), headers, parsed_headers);
}
const net::HttpResponseHeaders* response_headers() const {
return response_headers_.get();
}
private:
scoped_refptr<net::HttpResponseHeaders> response_headers_;
};
TEST_F(AcceptLanguageUtilsTests, AcceptLanguageMatchContentLanguage) {
const struct {
std::string accept_language;
std::string content_language;
bool expected_return;
} tests[] = {
{"*", "en", false},
{"en", "*", true},
{"en", "en", true},
{"en", "En", true},
{"En", "en", true},
{"en", "en-us", false},
{"en-us", "en", true},
{"de-de", "de-de-1996", false},
{"de-De-1996", "de-de", true},
{"de-de", "de-Deva", false},
{"de-de", "de-Latn-DE", false},
};
for (const auto& test : tests) {
bool actual_return =
ReduceAcceptLanguageUtils::DoesAcceptLanguageMatchContentLanguage(
test.accept_language, test.content_language);
EXPECT_EQ(test.expected_return, actual_return)
<< "Test case: {" << test.accept_language << ", "
<< test.content_language << "}: expected return "
<< test.expected_return << " but got " << actual_return << ".";
}
}
TEST_F(AcceptLanguageUtilsTests, OriginCanReduceAcceptLanguage) {
struct TestCase {
std::string origin;
bool expected_return;
};
const auto tests = std::to_array<TestCase>({
{"http://example.com", true},
{"https://example.com", true},
{"ws://example.com", false},
{"http://example.com/1.jpg", true},
{"https://example.com/1.jpg", true},
});
for (size_t i = 0; i < std::size(tests); ++i) {
bool actual_return =
ReduceAcceptLanguageUtils::OriginCanReduceAcceptLanguage(
url::Origin::Create(GURL(tests[i].origin)));
EXPECT_EQ(tests[i].expected_return, actual_return)
<< "Test case " << i << ": expected return " << tests[i].expected_return
<< " but got " << actual_return << ".";
}
}
TEST_F(AcceptLanguageUtilsTests, FirstMatchPreferredLang) {
struct TestCase {
std::vector<std::string> preferred_languages;
std::vector<std::string> available_languages;
std::optional<std::string> expected_match_language;
};
const auto tests = std::to_array<TestCase>({
{{}, {"en"}, std::nullopt},
{{}, {"*"}, std::nullopt},
{{"en"}, {}, std::nullopt},
{{"en"}, {"en"}, "en"},
{{"en"}, {"*"}, "en"},
{{"en"}, {"en-US"}, std::nullopt},
{{"en-us"}, {"en"}, std::nullopt},
{{"en-us"}, {"en-US"}, "en-us"},
{{"en-us", "ja", "en"}, {"ja", "en-us"}, "en-us"},
});
for (size_t i = 0; i < std::size(tests); ++i) {
std::optional<std::string> actual_matched_language =
ReduceAcceptLanguageUtils::GetFirstMatchPreferredLanguage(
tests[i].preferred_languages, tests[i].available_languages);
EXPECT_EQ(tests[i].expected_match_language, actual_matched_language)
<< "Test case " << i << ": expected matched language "
<< (tests[i].expected_match_language
? tests[i].expected_match_language.value()
: "nullptr")
<< " but got "
<< (actual_matched_language ? actual_matched_language.value()
: "nullptr")
<< ".";
}
}
TEST_F(AcceptLanguageUtilsTests, AddNavigationRequestAcceptLanguageHeaders) {
base::test::ScopedFeatureList scoped_feature_list;
MockReduceAcceptLanguageControllerDelegate delegate =
MockReduceAcceptLanguageControllerDelegate("en,zh");
ReduceAcceptLanguageUtils reduce_language_utils(delegate);
GURL url = GURL("https://example.com");
contents()->NavigateAndCommit(url);
FrameTree& frame_tree = contents()->GetPrimaryFrameTree();
FrameTreeNode* root = frame_tree.root();
{
// Verify no header added when feature turns off.
net::HttpRequestHeaders headers;
std::optional<std::string> added_accept_language =
reduce_language_utils.AddNavigationRequestAcceptLanguageHeaders(
url::Origin::Create(url), root, &headers);
EXPECT_FALSE(headers.HasHeader(net::HttpRequestHeaders::kAcceptLanguage));
EXPECT_FALSE(added_accept_language.has_value());
}
// Test add navigation header with reduce accept language feature turns on.
scoped_feature_list.Reset();
scoped_feature_list.InitWithFeatures(
{network::features::kReduceAcceptLanguage}, {});
{
// Verify root frame node has the accept language header.
net::HttpRequestHeaders headers;
std::optional<std::string> added_accept_language =
reduce_language_utils.AddNavigationRequestAcceptLanguageHeaders(
url::Origin::Create(url), root, &headers);
EXPECT_THAT(headers.GetHeader(net::HttpRequestHeaders::kAcceptLanguage),
testing::Optional(std::string("en")));
EXPECT_EQ("en", added_accept_language.value());
// Verify child node still has the accept language header.
AddOneChildNode();
FrameTreeNode* child0 = root->child_at(0);
net::HttpRequestHeaders child_http_headers;
added_accept_language =
reduce_language_utils.AddNavigationRequestAcceptLanguageHeaders(
url::Origin::Create(url), child0, &child_http_headers);
EXPECT_THAT(headers.GetHeader(net::HttpRequestHeaders::kAcceptLanguage),
testing::Optional(std::string("en")));
EXPECT_EQ("en", added_accept_language.value());
// Verify use the persist language when it's available instead of user first
// accept language.
std::string test_persisted_lang = "en";
delegate.PersistReducedLanguage(url::Origin::Create(url),
test_persisted_lang);
added_accept_language =
reduce_language_utils.AddNavigationRequestAcceptLanguageHeaders(
url::Origin::Create(url), root, &headers);
EXPECT_THAT(headers.GetHeader(net::HttpRequestHeaders::kAcceptLanguage),
testing::Optional(test_persisted_lang));
EXPECT_EQ(test_persisted_lang, added_accept_language.value());
// Verify commit language has the same value.
std::optional<std::string> commit_lang =
reduce_language_utils.LookupReducedAcceptLanguage(
url::Origin::Create(url), root);
EXPECT_TRUE(commit_lang.has_value());
EXPECT_EQ(test_persisted_lang, commit_lang.value());
// Verify persist language is not one of user's accepted languages, use
// user's first accepted language instead.
test_persisted_lang = "ja";
delegate.PersistReducedLanguage(url::Origin::Create(url),
test_persisted_lang);
added_accept_language =
reduce_language_utils.AddNavigationRequestAcceptLanguageHeaders(
url::Origin::Create(url), root, &headers);
EXPECT_THAT(headers.GetHeader(net::HttpRequestHeaders::kAcceptLanguage),
testing::Optional(std::string("en")));
EXPECT_EQ("en", added_accept_language.value());
}
}
TEST_F(AcceptLanguageUtilsTests, ParseAndPersistAcceptLanguageForNavigation) {
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitWithFeatures(
{network::features::kReduceAcceptLanguage}, {});
GURL url = GURL("https://example.com");
contents()->NavigateAndCommit(url);
FrameTree& frame_tree = contents()->GetPrimaryFrameTree();
FrameTreeNode* root = frame_tree.root();
AddOneChildNode();
FrameTreeNode* child0 = root->child_at(0);
{
// Verify parse return correct values.
MockReduceAcceptLanguageControllerDelegate delegate =
MockReduceAcceptLanguageControllerDelegate("en,zh");
ReduceAcceptLanguageUtils reduce_language_utils(delegate);
net::HttpRequestHeaders headers;
auto parsed_headers = network::mojom::ParsedHeaders::New();
// Expect return false when parsed_headers->content_language is null.
EXPECT_FALSE(
reduce_language_utils.ReadAndPersistAcceptLanguageForNavigation(
url::Origin::Create(url), headers, parsed_headers));
parsed_headers->content_language = network::ParseContentLanguages("en");
// Expect return false when parsed_headers->avail_language is null.
EXPECT_FALSE(
reduce_language_utils.ReadAndPersistAcceptLanguageForNavigation(
url::Origin::Create(url), headers, parsed_headers));
parsed_headers->avail_language = network::ParseAvailLanguage(" ");
// Expect return false when invalid URL.
EXPECT_FALSE(
reduce_language_utils.ReadAndPersistAcceptLanguageForNavigation(
url::Origin::Create(GURL("ws://example.com")), headers,
parsed_headers));
// Expect return false when parsed_headers->avail_language has no
// accept-language values.
EXPECT_FALSE(
reduce_language_utils.ReadAndPersistAcceptLanguageForNavigation(
url::Origin::Create(GURL(url)), headers, parsed_headers));
parsed_headers->avail_language = network::ParseAvailLanguage("en, zh");
// Expect return false when no initial accept-language header.
EXPECT_FALSE(
reduce_language_utils.ReadAndPersistAcceptLanguageForNavigation(
url::Origin::Create(url), headers, parsed_headers));
headers.SetHeader(net::HttpRequestHeaders::kAcceptLanguage, "en");
// Site supports user's accept language. Accept-Language matches
// Content-Language, no need to restart and persist language.
EXPECT_FALSE(
reduce_language_utils.ReadAndPersistAcceptLanguageForNavigation(
url::Origin::Create(url), headers, parsed_headers));
std::optional<std::string> persisted_lang =
delegate.GetReducedLanguage(url::Origin::Create(url));
EXPECT_FALSE(persisted_lang.has_value());
}
{
// Verify incognito only return first user accept language.
MockReduceAcceptLanguageControllerDelegate delegate =
MockReduceAcceptLanguageControllerDelegate("en,zh", true);
EXPECT_EQ(std::vector<std::string>{"en"},
delegate.GetUserAcceptLanguages());
MockReduceAcceptLanguageControllerDelegate delegate1 =
MockReduceAcceptLanguageControllerDelegate("en-US,zh", true);
EXPECT_EQ(std::vector<std::string>({"en-US", "en"}),
delegate1.GetUserAcceptLanguages());
}
// Verify parse and persist languages in different combinations.
{
const struct {
std::string user_accept_languages;
std::string accept_language;
std::string content_language;
std::string avail_language;
bool expected_resend_request;
std::optional<std::string> expected_persisted_language;
std::optional<std::string> expected_commit_language;
} tests[] = {
// Test cases for special language values.
{"en,zh", "en", "ja", "ja, unknown", false, std::nullopt, "en"},
{"en,zh", "en", "ja", "*", true, std::nullopt, "en"},
{"zh,en", "", "ja", "ja, en", true, "en", "en"},
{"en,zh", "en", "ja", "INVALID", false, std::nullopt, "en"},
// Test cases for multiple content languages
{"en,zh", "zh", "zh, ja", "en, zh", false, "zh", "zh"},
{"en,zh", "en", "zh, en", "en, ja, zh", false, std::nullopt, "en"},
{"en,zh", "en", "zh, en", "ja, en;d, zh", false, std::nullopt, "en"},
{"en,zh", "en", "es, ja", "es, ja, zh", true, "zh", "zh"},
// Test cases for base language without country code.
{"en,zh", "zh", "zh", "en, zh", false, "zh", "zh"},
{"en,zh", "en", "zh", "ja, zh", false, "zh", "zh"},
{"en,ja,zh", "en", "zh", "ja, zh", true, "ja", "ja"},
{"en,zh", "en", "ja", "ja", false, std::nullopt, "en"},
{"zh,en", "zh", "ja", "ja, en", true, "en", "en"},
// Test cases mix with base language and language with country code.
{"zh,en-US", "zh", "ja", "ja, en", true, "en", "en"},
{"en,zh-CN", "en", "zh-cn", "ja, zh-CN", false, "zh-CN", "zh-CN"},
{"en-US,zh", "en-US", "ja", "ja, en", true, "en", "en"},
{"en-US,zh", "en-US", "ja", "ja, en-GB", false, std::nullopt, "en-US"},
// Test cases with language-region pair has big difference in language.
{"zh", "zh", "zh-HK", "zh-HK", false, std::nullopt, "zh"},
{"zh-HK", "zh-HK", "zh", "zh", false, std::nullopt, "zh-HK"},
{"zh-CN", "zh-CN", "zh-HK", "zh-HK", false, std::nullopt, "zh-CN"},
{"zh-CN,zh", "zh-CN", "zh-HK", "zh-HK", false, std::nullopt, "zh-CN"},
{"zh-CN,zh,zh-HK", "zh-CN", "zh-HK", "zh-HK", false, "zh-HK", "zh-HK"},
{"zh-CN,zh", "zh-CN", "zh-HK", "zh-HK, zh", true, "zh", "zh"},
{"zh-CN,zh,zh-HK", "zh-CN", "zh-HK", "zh-HK, zh-CN, zh", true,
std::nullopt, "zh-CN"},
{"zh-CN,zh,zh-HK", "zh-CN", "zh-HK", "zh-HK, zh, zh-CN", true,
std::nullopt, "zh-CN"},
// Test cases with empty user accept-language we ignore reduce the
// Accept-Language HTTP header.
{"", "zh", "ja", "ja, en", false, std::nullopt, std::nullopt},
};
size_t i = 0;
for (const auto& test : tests) {
MockReduceAcceptLanguageControllerDelegate delegate =
MockReduceAcceptLanguageControllerDelegate(
test.user_accept_languages);
ReduceAcceptLanguageUtils reduce_language_utils(delegate);
// Verify whether needs to resend request
bool actual_resend_request =
ParseAndPersist(url, reduce_language_utils,
/*accept_language=*/test.accept_language,
/*content_language=*/test.content_language,
/*avail_language=*/test.avail_language);
EXPECT_EQ(test.expected_resend_request, actual_resend_request)
<< "Test case " << i << ": expected resend request "
<< test.expected_resend_request << " but got "
<< actual_resend_request << ".";
// Verify persist language
std::optional<std::string> actual_persisted_language =
delegate.GetReducedLanguage(url::Origin::Create(url));
EXPECT_EQ(test.expected_persisted_language, actual_persisted_language)
<< "Test case " << i << ": expected persisted language "
<< (test.expected_persisted_language
? test.expected_persisted_language.value()
: "nullopt")
<< " but got "
<< (actual_persisted_language ? actual_persisted_language.value()
: "nullopt")
<< ".";
// Verify commit language
std::optional<std::string> actual_commit_language =
reduce_language_utils.LookupReducedAcceptLanguage(
url::Origin::Create(url), root);
EXPECT_EQ(test.expected_commit_language, actual_commit_language)
<< "Test case " << i << ": expected commit language "
<< (test.expected_commit_language
? test.expected_commit_language.value()
: "nullopt")
<< " but got "
<< (actual_commit_language ? actual_commit_language.value()
: "nullopt")
<< ".";
// Verify child frame commit language same as parent commit language.
std::optional<std::string> actual_child_commit_language =
reduce_language_utils.LookupReducedAcceptLanguage(
url::Origin::Create(url), child0);
EXPECT_EQ(test.expected_commit_language, actual_child_commit_language)
<< "Test case " << i << ": expected child frame commit language "
<< (test.expected_commit_language
? test.expected_commit_language.value()
: "nullopt")
<< " but got "
<< (actual_child_commit_language
? actual_child_commit_language.value()
: "nullopt")
<< ".";
i++;
}
}
}
TEST_F(AcceptLanguageUtilsTests, VerifyClearAcceptLanguage) {
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitWithFeatures(
{network::features::kReduceAcceptLanguage}, {});
GURL url = GURL("https://example.com");
contents()->NavigateAndCommit(url);
FrameTree& frame_tree = contents()->GetPrimaryFrameTree();
FrameTreeNode* root = frame_tree.root();
MockReduceAcceptLanguageControllerDelegate delegate =
MockReduceAcceptLanguageControllerDelegate("zh,ja,en-US");
ReduceAcceptLanguageUtils reduce_language_utils(delegate);
ParseAndPersist(url, reduce_language_utils,
/*accept_language=*/"zh",
/*content_language=*/"es",
/*avail_language=*/"ja, es;d, en-US");
// Verify persisted reduce accept-language is "ja".
url::Origin origin = url::Origin::Create(url);
std::optional<std::string> actual_persisted_language =
delegate.GetReducedLanguage(origin);
EXPECT_EQ("ja", actual_persisted_language.value());
std::optional<std::string> actual_commit_language =
reduce_language_utils.LookupReducedAcceptLanguage(origin, root);
EXPECT_EQ("ja", actual_commit_language);
// Update user language preference list to not include "ja".
delegate.SetUserAcceptLanguages("zh,en-US");
// Verify commit language is the first language in user's preference list.
std::optional<std::string> new_commit_language =
reduce_language_utils.LookupReducedAcceptLanguage(origin, root);
EXPECT_EQ("zh", new_commit_language);
// Verify persist language has been cleared once user accept language list
// updates.
std::optional<std::string> new_persisted_language =
delegate.GetReducedLanguage(origin);
EXPECT_FALSE(new_persisted_language.has_value());
}
TEST_F(AcceptLanguageUtilsTests, ValidateDeprecationOriginTrial) {
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitWithFeatures(
{network::features::kReduceAcceptLanguage}, {});
GURL request_url = GURL(kFirstPartyUrl);
contents()->NavigateAndCommit(request_url);
FrameTree& frame_tree = contents()->GetPrimaryFrameTree();
FrameTreeNode* root = frame_tree.root();
MockOriginTrialsDelegate origin_trials_delegate;
origin_trials_delegate.AddPersistedTrialForTest(kFirstPartyUrl,
kDeprecationTrialName);
EXPECT_TRUE(
ReduceAcceptLanguageUtils::CheckDisableReduceAcceptLanguageOriginTrial(
request_url, root, &origin_trials_delegate));
EXPECT_FALSE(
ReduceAcceptLanguageUtils::CheckDisableReduceAcceptLanguageOriginTrial(
request_url, nullptr, &origin_trials_delegate));
EXPECT_FALSE(
ReduceAcceptLanguageUtils::CheckDisableReduceAcceptLanguageOriginTrial(
request_url, root, nullptr));
}
TEST_F(AcceptLanguageUtilsTests, ThrottleProcessResponse) {
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitWithFeatures(
{network::features::kReduceAcceptLanguage}, {});
MockReduceAcceptLanguageControllerDelegate delegate =
MockReduceAcceptLanguageControllerDelegate("en,zh");
GURL request_url = GURL(kFirstPartyUrl);
contents()->NavigateAndCommit(request_url);
FrameTree& frame_tree = contents()->GetPrimaryFrameTree();
FrameTreeNode* root = frame_tree.root();
MockOriginTrialsDelegate origin_trials_delegate;
ReduceAcceptLanguageThrottle throttle = ReduceAcceptLanguageThrottle(
delegate, &origin_trials_delegate, root->frame_tree_node_id());
// User's first prefer language.
std::string language = delegate.GetUserAcceptLanguages()[0];
network::ResourceRequest request;
request.url = request_url;
net::HttpRequestHeaders headers;
headers.SetHeader(net::HttpRequestHeaders::kAcceptLanguage, language);
request.headers = headers;
bool defer = false;
blink::URLLoaderThrottle::RestartWithURLReset restart_with_url_reset(false);
throttle.WillStartRequest(&request, &defer);
delegate.PersistReducedLanguage(url::Origin::Create(request_url), language);
network::mojom::URLResponseHead response_head;
response_head.headers =
base::MakeRefCounted<net::HttpResponseHeaders>("HTTP/1.1 200 OK");
// Early returns without the avail-language header.
{
throttle.BeforeWillProcessResponse(request_url, response_head,
&restart_with_url_reset);
std::optional<std::string> persist_language =
delegate.GetReducedLanguage(url::Origin::Create(request_url));
EXPECT_EQ(persist_language.value(), language);
}
// Early returns with service worker.
response_head.parsed_headers = network::mojom::ParsedHeaders::New();
response_head.parsed_headers->content_language =
network::ParseContentLanguages("ja");
response_head.parsed_headers->avail_language =
network::ParseAvailLanguage("ja, zh");
{
response_head.did_service_worker_navigation_preload = true;
throttle.BeforeWillProcessResponse(request_url, response_head,
&restart_with_url_reset);
std::optional<std::string> persist_language =
delegate.GetReducedLanguage(url::Origin::Create(request_url));
EXPECT_EQ(persist_language.value(), language);
}
// Early return when the deprecation trial feature turned on.
{
origin_trials_delegate.AddPersistedTrialForTest(kFirstPartyUrl,
kDeprecationTrialName);
throttle.BeforeWillProcessResponse(request_url, response_head,
&restart_with_url_reset);
std::optional<std::string> persist_language =
delegate.GetReducedLanguage(url::Origin::Create(request_url));
EXPECT_EQ(persist_language.value(), language);
origin_trials_delegate.ClearPersistedTokens();
}
// ReduceAcceptLanguageThrottle reads and parses the language: the persisted
// language should be updated to new negotiated language `zh`.
// User's initial accept-language is `en`, user full accept-language is
// [`en`, `zh`], and site supports language list is [`ja`, `zh`]. After
// language negotiation, the user's preferred language is `zh`.
{
response_head.did_service_worker_navigation_preload = false;
throttle.BeforeWillProcessResponse(request_url, response_head,
&restart_with_url_reset);
std::optional<std::string> persist_language =
delegate.GetReducedLanguage(url::Origin::Create(request_url));
EXPECT_EQ(persist_language.value(), "zh");
}
}
class CreateAcceptLanguageUtilsTest : public ::testing::Test {
public:
CreateAcceptLanguageUtilsTest() = default;
CreateAcceptLanguageUtilsTest(const CreateAcceptLanguageUtilsTest&) = delete;
CreateAcceptLanguageUtilsTest& operator=(
const CreateAcceptLanguageUtilsTest&) = delete;
TestBrowserContext* browser_context() { return &browser_context_; }
private:
content::BrowserTaskEnvironment task_environment_;
TestBrowserContext browser_context_;
};
TEST_F(CreateAcceptLanguageUtilsTest, CreateUtils) {
base::test::ScopedFeatureList scoped_feature_list;
scoped_feature_list.InitWithFeatures(
{network::features::kReduceAcceptLanguage}, {});
EXPECT_EQ(ReduceAcceptLanguageUtils::Create(browser_context()), std::nullopt);
// Expect return a valid instance.
browser_context()->SetReduceAcceptLanguageControllerDelegate(
std::make_unique<MockReduceAcceptLanguageControllerDelegate>("en,zh"));
EXPECT_NE(ReduceAcceptLanguageUtils::Create(browser_context()), std::nullopt);
scoped_feature_list.Reset();
scoped_feature_list.InitWithFeatures(
{}, {network::features::kReduceAcceptLanguage});
// Feature reset should expect no instance returns
EXPECT_EQ(ReduceAcceptLanguageUtils::Create(browser_context()), std::nullopt);
}
} // namespace content