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Implement speculation rules - same origin conservative prefetch
https://bugs.webkit.org/show_bug.cgi?id=295193 Reviewed by NOBODY (OOPS!). This implements an initial version of same-origin conservative prefetch speculation rules. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https.html: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=and-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=baseURLChangedByBaseElement-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=baseURLChangedBySameDocumentNavigation-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=defaultPredicate-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=hrefMatches-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=immediateMutation-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=invalidPredicate-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=linkHrefChanged-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=linkInShadowTree-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=linkToSelfFragment-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=newRuleSetAdded-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=not-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=or-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=selectorMatches-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=selectorMatchesDisplayLocked-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=selectorMatchesDisplayNone-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=selectorMatchesScopingRoot-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=unslottedLink-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/prefetch-single.https.html: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/prefetch-single.https_from_protocol=http&to_protocol=http-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/prefetch-single.https_from_protocol=http&to_protocol=https-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/prefetch-single.https_from_protocol=https&to_protocol=http-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/prefetch-single.https_from_protocol=https&to_protocol=https-expected.txt: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/resources/executor.sub.html: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/resources/executor.sub.html.headers: Added. * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/resources/prefetch.py: Added. (main): * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/resources/utils.sub.js: Added. (PrefetchAgent): (PrefetchAgent.prototype.getExecutorURL): (PrefetchAgent.prototype.async forceSinglePrefetch): (PrefetchAgent.prototype.async forceSpeculationRules): (PrefetchAgent.prototype.async navigate): (PrefetchAgent.prototype.async getRequestHeaders): (PrefetchAgent.prototype.async getResponseCookies): (PrefetchAgent.prototype.async getRequestCookies): (PrefetchAgent.prototype.async getRequestCredentials): (PrefetchAgent.prototype.async setReferrerPolicy): (PrefetchAgent.prototype.async getDeliveryType): (getPrefetchUrl): * LayoutTests/imported/w3c/web-platform-tests/speculation-rules/resources/utils.js: Added. (globalThis.assertSpeculationRulesIsSupported): (globalThis.RemoteContextHelper.PreloadingRemoteContextWrapper.prototype.addPreload): (globalThis.RemoteContextHelper.PreloadingRemoteContextWrapper): * Source/JavaScriptCore/CMakeLists.txt: * Source/JavaScriptCore/JavaScriptCore.xcodeproj/project.pbxproj: * Source/JavaScriptCore/Sources.txt: * Source/JavaScriptCore/runtime/JSGlobalObject.cpp: (JSC::JSGlobalObject::JSGlobalObject): * Source/JavaScriptCore/runtime/JSGlobalObject.h: (JSC::JSGlobalObject::speculationRules const): (JSC::JSGlobalObject::speculationRules): * Source/JavaScriptCore/runtime/SpeculationRules.cpp: Added. (JSC::parseStringOrStringList): (JSC::parseDocumentPredicate): (JSC::parseSingleRule): (JSC::parseRules): (JSC::SpeculationRules::parseSpeculationRules): * Source/JavaScriptCore/runtime/SpeculationRules.h: Added. (JSC::SpeculationRules::DocumentPredicate::DocumentPredicate): (JSC::SpeculationRules::DocumentPredicate::value const): (JSC::SpeculationRules::create): (JSC::SpeculationRules::prefetchRules const): * Source/WebCore/Headers.cmake: * Source/WebCore/Sources.txt: * Source/WebCore/WebCore.xcodeproj/project.pbxproj: * Source/WebCore/bindings/js/ScriptController.cpp: (WebCore::ScriptController::registerSpeculationRules): * Source/WebCore/bindings/js/ScriptController.h: * Source/WebCore/dom/Document.cpp: (WebCore::Document::resolveStyle): (WebCore::Document::updateBaseURL): (WebCore::Document::considerSpeculationRules): (WebCore::Document::prefetch): * Source/WebCore/dom/Document.h: * Source/WebCore/dom/ScriptElement.cpp: (WebCore::ScriptElement::determineScriptType): (WebCore::ScriptElement::prepareScript): (WebCore::ScriptElement::registerSpeculationRules): * Source/WebCore/dom/ScriptElement.h: * Source/WebCore/dom/ScriptElementCachedScriptFetcher.h: (WebCore::ScriptElementCachedScriptFetcher::isSpeculationRules const): * Source/WebCore/dom/ScriptType.h: * Source/WebCore/dom/SpeculationRulesMatcher.cpp: Copied from Source/WebCore/dom/ScriptElementCachedScriptFetcher.h. (WebCore::matches): (WebCore::SpeculationRulesMatcher::hasMatchingRule): * Source/WebCore/dom/SpeculationRulesMatcher.h: Copied from Source/WebCore/dom/ScriptElementCachedScriptFetcher.h. * Source/WebCore/dom/TextDecoderStreamDecoder.cpp: * Source/WebCore/dom/TrustedTypePolicy.cpp: * Source/WebCore/html/HTMLAnchorElement.cpp: (WebCore::HTMLAnchorElement::defaultEventHandler): (WebCore::HTMLAnchorElement::attributeChanged): (WebCore::HTMLAnchorElement::insertedIntoAncestor): (WebCore::HTMLAnchorElement::setFullURL): (WebCore::HTMLAnchorElement::setShouldBePrefetched): (WebCore::HTMLAnchorElement::checkForSpeculationRules): * Source/WebCore/html/HTMLAnchorElement.h: * Source/WebCore/html/HTMLScriptElement.h: * Source/WebCore/loader/DocumentLoader.cpp: (WebCore::DocumentLoader::becomeMainResourceClient): (WebCore::DocumentLoader::setPrefetchedMainResource): * Source/WebCore/loader/DocumentLoader.h: * Source/WebCore/loader/DocumentPrefetcher.cpp: Copied from Source/WebCore/dom/ScriptType.h. (WebCore::DocumentPrefetcher::DocumentPrefetcher): (WebCore::DocumentPrefetcher::~DocumentPrefetcher): (WebCore::DocumentPrefetcher::prefetch): (WebCore::DocumentPrefetcher::matchPrefetchedDocument): (WebCore::DocumentPrefetcher::clear): * Source/WebCore/loader/DocumentPrefetcher.h: Copied from Source/WebCore/dom/ScriptType.h. (WebCore::DocumentPrefetcher::create): * Source/WebCore/loader/FrameLoader.cpp: (WebCore::FrameLoader::FrameLoader): (WebCore::FrameLoader::commitProvisionalLoad): (WebCore::FrameLoader::continueLoadAfterNavigationPolicy): (WebCore::FrameLoader::dispatchDidCommitLoad): (WebCore::FrameLoader::prefetch): * Source/WebCore/loader/FrameLoader.h: * Source/WebCore/loader/LinkLoader.cpp: * Source/WebCore/loader/cache/CachedResourceLoader.cpp: (WebCore::CachedResourceLoader::allowedByContentSecurityPolicy const): * Source/WebCore/platform/ReferrerPolicy.cpp: (WebCore::parseReferrerPolicy): * Source/WebCore/platform/ReferrerPolicy.h: * Source/WebCore/platform/network/HTTPHeaderNames.in: * Tools/Scripts/webkitpy/style/checkers/cpp.py: (_check_parameter_name_against_text):
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‎LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https.html‎

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<!DOCTYPE html>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/common/utils.js"></script>
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<script src="/common/dispatcher/dispatcher.js"></script>
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<script src="../resources/utils.js"></script>
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<script src="resources/utils.sub.js"></script>
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<script src="/common/subset-tests-by-key.js"></script>
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<meta name="variant" content="?include=defaultPredicate">
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<meta name="variant" content="?include=hrefMatches">
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<meta name="variant" content="?include=and">
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<meta name="variant" content="?include=or">
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<meta name="variant" content="?include=not">
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<meta name="variant" content="?include=invalidPredicate">
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<meta name="variant" content="?include=linkInShadowTree">
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<meta name="variant" content="?include=linkHrefChanged">
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<meta name="variant" content="?include=newRuleSetAdded">
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<meta name="variant" content="?include=selectorMatches">
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<meta name="variant" content="?include=selectorMatchesScopingRoot">
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<meta name="variant" content="?include=selectorMatchesDisplayNone">
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<meta name="variant" content="?include=selectorMatchesDisplayLocked">
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<meta name="variant" content="?include=unslottedLink">
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<meta name="variant" content="?include=immediateMutation">
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<meta name="variant" content="?include=baseURLChangedBySameDocumentNavigation">
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<meta name="variant" content="?include=baseURLChangedByBaseElement">
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<meta name="variant" content="?include=linkToSelfFragment">
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<body>
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<script>
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setup(() => assertSpeculationRulesIsSupported());
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subsetTestByKey('defaultPredicate', promise_test, async t => {
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const url = getPrefetchUrl();
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addLink(url);
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insertDocumentRule();
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 1);
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}, 'test document rule with no predicate');
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subsetTestByKey('hrefMatches', promise_test, async t => {
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insertDocumentRule({ href_matches: '*\\?uuid=*&foo=bar' });
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const url_1 = getPrefetchUrl({foo: 'bar'});
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addLink(url_1);
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const url_2 = getPrefetchUrl({foo: 'buzz'});
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addLink(url_2)
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url_1), 1);
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assert_equals(await isUrlPrefetched(url_2), 0);
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}, 'test href_matches document rule');
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subsetTestByKey('and', promise_test, async t => {
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insertDocumentRule({
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'and': [
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{ href_matches: '*\\?*foo=bar*' },
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{ href_matches: '*\\?*fizz=buzz*' }]
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});
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const url_1 = getPrefetchUrl({foo: 'bar'});
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const url_2 = getPrefetchUrl({fizz: 'buzz'});
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const url_3 = getPrefetchUrl({foo: 'bar', fizz: 'buzz'});
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[url_1, url_2, url_3].forEach(url => addLink(url));
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url_1), 0);
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assert_equals(await isUrlPrefetched(url_2), 0);
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assert_equals(await isUrlPrefetched(url_3), 1);
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}, 'test document rule with conjunction predicate');
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subsetTestByKey('or', promise_test, async t => {
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insertDocumentRule({
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'or': [
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{ href_matches: '*\\?*foo=bar*' },
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{ href_matches: '*\\?*fizz=buzz*' }]
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});
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const url_1 = getPrefetchUrl({ foo: 'buzz' });
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const url_2 = getPrefetchUrl({ fizz: 'buzz' });
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const url_3 = getPrefetchUrl({ foo: 'bar'});
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[url_1, url_2, url_3].forEach(url => addLink(url));
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url_1), 0);
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assert_equals(await isUrlPrefetched(url_2), 1);
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assert_equals(await isUrlPrefetched(url_3), 1);
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}, 'test document rule with disjunction predicate');
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subsetTestByKey('not', promise_test, async t => {
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insertDocumentRule({ not: { href_matches: '*\\?uuid=*&foo=bar' } });
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const url_1 = getPrefetchUrl({foo: 'bar'});
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addLink(url_1);
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const url_2 = getPrefetchUrl({foo: 'buzz'});
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addLink(url_2)
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url_1), 0);
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assert_equals(await isUrlPrefetched(url_2), 1);
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}, 'test document rule with negation predicate');
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subsetTestByKey('invalidPredicate', promise_test, async t => {
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const url = getPrefetchUrl();
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addLink(url);
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insertDocumentRule({invalid: 'predicate'});
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 0);
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}, 'invalid predicate should not throw error or start prefetch');
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subsetTestByKey('linkInShadowTree', promise_test, async t => {
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insertDocumentRule();
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// Create shadow root.
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const shadowHost = document.createElement('div');
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document.body.appendChild(shadowHost);
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const shadowRoot = shadowHost.attachShadow({mode: 'open'});
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const url = getPrefetchUrl();
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addLink(url, shadowRoot);
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 1);
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}, 'test that matching link in a shadow tree is prefetched');
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subsetTestByKey('linkHrefChanged', promise_test, async t => {
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insertDocumentRule({href_matches: "*\\?*foo=bar*"});
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const url = getPrefetchUrl();
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const link = addLink(url);
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 0);
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const matching_url = getPrefetchUrl({foo: 'bar'});
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link.href = matching_url;
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(matching_url), 1);
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}, 'test that changing the href of an invalid link to a matching value triggers a prefetch');
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subsetTestByKey('newRuleSetAdded', promise_test, async t => {
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insertDocumentRule({href_matches: "*\\?*foo=bar*"});
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const url = getPrefetchUrl({fizz: "buzz"});
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addLink(url);
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 0);
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insertDocumentRule({href_matches: "*\\?*fizz=buzz*"});
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 1);
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}, 'test that adding a second rule set triggers prefetch');
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subsetTestByKey('selectorMatches', promise_test, async t => {
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insertDocumentRule({ selector_matches: 'a.important-link' });
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const url_1 = getPrefetchUrl({foo: 'bar'});
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const importantLink = addLink(url_1);
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importantLink.className = 'important-link';
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const url_2 = getPrefetchUrl({foo: 'buzz'});
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addLink(url_2)
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url_1), 1);
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assert_equals(await isUrlPrefetched(url_2), 0);
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}, 'test selector_matches document rule');
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subsetTestByKey('selectorMatchesScopingRoot', promise_test, async t => {
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insertDocumentRule({ selector_matches: ':root > body > a' });
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const url_1 = getPrefetchUrl({ foo: 'bar' });
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addLink(url_1);
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const url_2 = getPrefetchUrl({ foo: 'buzz' });
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const extraContainer = document.createElement('div');
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document.body.appendChild(extraContainer);
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addLink(url_2, extraContainer);
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url_1), 1);
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assert_equals(await isUrlPrefetched(url_2), 0);
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}, 'test selector_matches with :root');
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subsetTestByKey('selectorMatchesDisplayNone', promise_test, async t => {
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const style = document.createElement('style');
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style.innerText = ".important-section { display: none; }";
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document.head.appendChild(style);
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insertDocumentRule();
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const importantSection = document.createElement('div');
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importantSection.className = 'important-section';
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document.body.appendChild(importantSection);
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const url = getPrefetchUrl();
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addLink(url, importantSection);
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 0);
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style.remove();
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 1);
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}, 'test selector_matches with link inside display:none container');
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subsetTestByKey('selectorMatchesDisplayLocked', promise_test, async t => {
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const style = document.createElement('style');
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style.innerText = ".important-section { content-visibility: hidden; }";
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document.head.appendChild(style);
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insertDocumentRule({ selector_matches: '.important-section a' });
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const importantSection = document.createElement('div');
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importantSection.className = 'important-section';
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document.body.appendChild(importantSection);
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const url = getPrefetchUrl();
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addLink(url, importantSection);
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 0);
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style.remove();
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 1);
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}, 'test selector_matches with link inside display locked container');
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subsetTestByKey('unslottedLink', promise_test, async t => {
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insertDocumentRule();
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// Create shadow root.
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const shadowHost = document.createElement('div');
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document.body.appendChild(shadowHost);
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const shadowRoot = shadowHost.attachShadow({ mode: 'open' });
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// Add unslotted link.
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const url = getPrefetchUrl();
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addLink(url, shadowHost);
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 0);
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}, 'test that unslotted link never matches document rule');
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subsetTestByKey('immediateMutation', promise_test, async t => {
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// Add a link and allow it to get its style computed.
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// (Double RAF lets this happen normally.)
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const url = getPrefetchUrl();
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const link = addLink(url, document.body);
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await new Promise(resolve => requestAnimationFrame(() => requestAnimationFrame(() => resolve())));
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// Add a document rule and then immediately change the DOM to make it match.
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insertDocumentRule({ selector_matches: '.late-class *' });
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document.body.className = 'late-class';
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 1);
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}, 'test that selector_matches predicates respect changes immediately');
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const baseURLChangedTestFixture = (testName, modifyBaseURLFunc) => {
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return subsetTestByKey(testName, promise_test, async t => {
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const url = getPrefetchUrl();
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const link = addLink(url);
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const url_pattern_string = `prefetch.py${url.search}`;
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// Insert a document rule with a url pattern predicate that uses a
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// relative URL which will not match with |url|, due to |document.baseURI|
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// being different from |url|'s path.
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assert_false((new URLPattern(url_pattern_string, document.baseURI)).test(url));
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insertDocumentRule({ href_matches: url_pattern_string });
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 0);
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// Change the baseURL of the document to |url|. |url| should now be
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// prefetched.
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modifyBaseURLFunc(url);
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assert_true((new URLPattern(url_pattern_string, document.baseURI)).test(url));
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 1);
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});
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}
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baseURLChangedTestFixture('baseURLChangedBySameDocumentNavigation', url => {
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history.pushState({}, "", url);
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});
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baseURLChangedTestFixture('baseURLChangedByBaseElement', url => {
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const base = document.createElement('base');
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base.href = url;
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document.head.appendChild(base);
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});
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subsetTestByKey('linkToSelfFragment', promise_test, async t => {
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const url = getPrefetchUrl();
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history.pushState({}, "", url);
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addLink(new URL('#fragment', url));
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insertDocumentRule();
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await new Promise(resolve => t.step_timeout(resolve, 2000));
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assert_equals(await isUrlPrefetched(url), 0);
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}, 'test that a fragment link to the current document does not prefetch');
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</script>
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</body>

‎LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=and-expected.txt‎

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PASS test document rule with conjunction predicate
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‎LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=baseURLChangedByBaseElement-expected.txt‎

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PASS document-rules
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‎LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=baseURLChangedBySameDocumentNavigation-expected.txt‎

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PASS document-rules
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‎LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=defaultPredicate-expected.txt‎

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PASS test document rule with no predicate
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‎LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=hrefMatches-expected.txt‎

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PASS test href_matches document rule
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‎LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=immediateMutation-expected.txt‎

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PASS test that selector_matches predicates respect changes immediately
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‎LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=invalidPredicate-expected.txt‎

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PASS invalid predicate should not throw error or start prefetch
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‎LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=linkHrefChanged-expected.txt‎

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PASS test that changing the href of an invalid link to a matching value triggers a prefetch
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‎LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/document-rules.https_include=linkInShadowTree-expected.txt‎

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PASS test that matching link in a shadow tree is prefetched
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