third_party/WebKit/Source/web/tests/HTMLDocumentParserLoadingTest.cpp - chromium/src - Git at Google

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 #include "core/html/parser/HTMLDocumentParser.h"

 #include "core/dom/Document.h"
 #include "core/testing/sim/SimRequest.h"
 #include "core/testing/sim/SimTest.h"
 #include "platform/testing/HistogramTester.h"
 #include "platform/testing/UnitTestHelpers.h"
 #include "testing/gtest/include/gtest/gtest.h"

 namespace blink {

 using namespace HTMLNames;

 class HTMLDocumentParserSimTest : public SimTest {
  protected:
   HTMLDocumentParserSimTest() {
     Document::SetThreadedParsingEnabledForTesting(true);
   }
   HistogramTester histogram_;
 };

 class HTMLDocumentParserLoadingTest
     : public HTMLDocumentParserSimTest,
       public ::testing::WithParamInterface<bool> {
  protected:
   HTMLDocumentParserLoadingTest() {
     Document::SetThreadedParsingEnabledForTesting(GetParam());
   }
 };

 INSTANTIATE_TEST_CASE_P(Threaded,
                         HTMLDocumentParserLoadingTest,
                         ::testing::Values(true));
 INSTANTIATE_TEST_CASE_P(NotThreaded,
                         HTMLDocumentParserLoadingTest,
                         ::testing::Values(false));

 TEST_P(HTMLDocumentParserLoadingTest,
        ShouldNotPauseParsingForExternalStylesheetsInHead) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   SimRequest css_head_resource("https://example.com/testHead.css", "text/css");

   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<html><head>"
       "<link rel=stylesheet href=testHead.css>"
       "</head><body>"
       "<div id=\"bodyDiv\"></div>"
       "</body></html>");

   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("bodyDiv"));
   css_head_resource.Complete("");
   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("bodyDiv"));
 }

 TEST_P(HTMLDocumentParserLoadingTest,
        ShouldNotPauseParsingForExternalStylesheetsImportedInHead) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   SimRequest css_head_resource("https://example.com/testHead.css", "text/css");

   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<html><head>"
       "<style>"
       "@import 'testHead.css'"
       "</style>"
       "</head><body>"
       "<div id=\"bodyDiv\"></div>"
       "</body></html>");

   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("bodyDiv"));
   css_head_resource.Complete("");
   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("bodyDiv"));
 }

 TEST_P(HTMLDocumentParserLoadingTest,
        ShouldPauseParsingForExternalStylesheetsInBody) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   SimRequest css_head_resource("https://example.com/testHead.css", "text/css");
   SimRequest css_body_resource("https://example.com/testBody.css", "text/css");

   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<html><head>"
       "<link rel=stylesheet href=testHead.css>"
       "</head><body>"
       "<div id=\"before\"></div>"
       "<link rel=stylesheet href=testBody.css>"
       "<div id=\"after\"></div>"
       "</body></html>");

   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_FALSE(GetDocument().getElementById("after"));

   // Completing the head css shouldn't change anything
   css_head_resource.Complete("");
   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_FALSE(GetDocument().getElementById("after"));

   // Completing the body resource and pumping the tasks should continue parsing
   // and create the "after" div.
   css_body_resource.Complete("");
   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_TRUE(GetDocument().getElementById("after"));
 }

 TEST_P(HTMLDocumentParserLoadingTest,
        ShouldPauseParsingForExternalStylesheetsInBodyIncremental) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   SimRequest css_head_resource("https://example.com/testHead.css", "text/css");
   SimRequest css_body_resource1("https://example.com/testBody1.css",
                                 "text/css");
   SimRequest css_body_resource2("https://example.com/testBody2.css",
                                 "text/css");
   SimRequest css_body_resource3("https://example.com/testBody3.css",
                                 "text/css");

   LoadURL("https://example.com/test.html");

   main_resource.Start();
   main_resource.Write(
       "<!DOCTYPE html>"
       "<html><head>"
       "<link rel=stylesheet href=testHead.css>"
       "</head><body>"
       "<div id=\"before\"></div>"
       "<link rel=stylesheet href=testBody1.css>"
       "<div id=\"after1\"></div>");

   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_FALSE(GetDocument().getElementById("after1"));
   EXPECT_FALSE(GetDocument().getElementById("after2"));
   EXPECT_FALSE(GetDocument().getElementById("after3"));

   main_resource.Write(
       "<link rel=stylesheet href=testBody2.css>"
       "<div id=\"after2\"></div>");

   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_FALSE(GetDocument().getElementById("after1"));
   EXPECT_FALSE(GetDocument().getElementById("after2"));
   EXPECT_FALSE(GetDocument().getElementById("after3"));

   main_resource.Complete(
       "<link rel=stylesheet href=testBody3.css>"
       "<div id=\"after3\"></div>"
       "</body></html>");

   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_FALSE(GetDocument().getElementById("after1"));
   EXPECT_FALSE(GetDocument().getElementById("after2"));
   EXPECT_FALSE(GetDocument().getElementById("after3"));

   // Completing the head css shouldn't change anything
   css_head_resource.Complete("");
   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_FALSE(GetDocument().getElementById("after1"));
   EXPECT_FALSE(GetDocument().getElementById("after2"));
   EXPECT_FALSE(GetDocument().getElementById("after3"));

   // Completing the second css shouldn't change anything
   css_body_resource2.Complete("");
   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_FALSE(GetDocument().getElementById("after1"));
   EXPECT_FALSE(GetDocument().getElementById("after2"));
   EXPECT_FALSE(GetDocument().getElementById("after3"));

   // Completing the first css should allow the parser to continue past it and
   // the second css which was already completed and then pause again before the
   // third css.
   css_body_resource1.Complete("");
   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_TRUE(GetDocument().getElementById("after1"));
   EXPECT_TRUE(GetDocument().getElementById("after2"));
   EXPECT_FALSE(GetDocument().getElementById("after3"));

   // Completing the third css should let it continue to the end.
   css_body_resource3.Complete("");
   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_TRUE(GetDocument().getElementById("after1"));
   EXPECT_TRUE(GetDocument().getElementById("after2"));
   EXPECT_TRUE(GetDocument().getElementById("after3"));
 }

 TEST_P(HTMLDocumentParserLoadingTest,
        ShouldNotPauseParsingForExternalNonMatchingStylesheetsInBody) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   SimRequest css_head_resource("https://example.com/testHead.css", "text/css");

   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<html><head>"
       "<link rel=stylesheet href=testHead.css>"
       "</head><body>"
       "<div id=\"before\"></div>"
       "<link rel=stylesheet href=testBody.css type='print'>"
       "<div id=\"after\"></div>"
       "</body></html>");

   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_TRUE(GetDocument().getElementById("after"));

   // Completing the head css shouldn't change anything
   css_head_resource.Complete("");
 }

 TEST_P(HTMLDocumentParserLoadingTest,
        ShouldPauseParsingForExternalStylesheetsImportedInBody) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   SimRequest css_head_resource("https://example.com/testHead.css", "text/css");
   SimRequest css_body_resource("https://example.com/testBody.css", "text/css");

   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<html><head>"
       "<link rel=stylesheet href=testHead.css>"
       "</head><body>"
       "<div id=\"before\"></div>"
       "<style>"
       "@import 'testBody.css'"
       "</style>"
       "<div id=\"after\"></div>"
       "</body></html>");

   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_FALSE(GetDocument().getElementById("after"));

   // Completing the head css shouldn't change anything
   css_head_resource.Complete("");
   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_FALSE(GetDocument().getElementById("after"));

   // Completing the body resource and pumping the tasks should continue parsing
   // and create the "after" div.
   css_body_resource.Complete("");
   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_TRUE(GetDocument().getElementById("after"));
 }

 TEST_P(HTMLDocumentParserLoadingTest,
        ShouldPauseParsingForExternalStylesheetsWrittenInBody) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   SimRequest css_head_resource("https://example.com/testHead.css", "text/css");
   SimRequest css_body_resource("https://example.com/testBody.css", "text/css");

   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<html><head>"
       "<link rel=stylesheet href=testHead.css>"
       "</head><body>"
       "<div id=\"before\"></div>"
       "<script>"
       "document.write('<link rel=stylesheet href=testBody.css>');"
       "</script>"
       "<div id=\"after\"></div>"
       "</body></html>");

   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_FALSE(GetDocument().getElementById("after"));

   // Completing the head css shouldn't change anything
   css_head_resource.Complete("");
   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_FALSE(GetDocument().getElementById("after"));

   // Completing the body resource and pumping the tasks should continue parsing
   // and create the "after" div.
   css_body_resource.Complete("");
   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_TRUE(GetDocument().getElementById("after"));
 }

 TEST_P(HTMLDocumentParserLoadingTest,
        PendingHeadStylesheetShouldNotBlockParserForBodyInlineStyle) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   SimRequest css_head_resource("https://example.com/testHead.css", "text/css");

   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<html><head>"
       "<link rel=stylesheet href=testHead.css>"
       "</head><body>"
       "<div id=\"before\"></div>"
       "<style>"
       "</style>"
       "<div id=\"after\"></div>"
       "</body></html>");

   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_TRUE(GetDocument().getElementById("after"));
   css_head_resource.Complete("");
 }

 TEST_P(HTMLDocumentParserLoadingTest,
        PendingHeadStylesheetShouldNotBlockParserForBodyShadowDom) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   SimRequest css_head_resource("https://example.com/testHead.css", "text/css");

   LoadURL("https://example.com/test.html");

   // The marquee tag has a shadow DOM that synchronously applies a stylesheet.
   main_resource.Complete(
       "<!DOCTYPE html>"
       "<html><head>"
       "<link rel=stylesheet href=testHead.css>"
       "</head><body>"
       "<div id=\"before\"></div>"
       "<marquee>Marquee</marquee>"
       "<div id=\"after\"></div>"
       "</body></html>");

   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_TRUE(GetDocument().getElementById("after"));
   css_head_resource.Complete("");
 }

 TEST_P(HTMLDocumentParserLoadingTest,
        ShouldNotPauseParsingForExternalStylesheetsAttachedInBody) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   SimRequest css_async_resource("https://example.com/testAsync.css",
                                 "text/css");

   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<html><head>"
       "</head><body>"
       "<div id=\"before\"></div>"
       "<script>"
       "var attach  = document.getElementsByTagName('script')[0];"
       "var link  = document.createElement('link');"
       "link.rel  = 'stylesheet';"
       "link.type = 'text/css';"
       "link.href = 'testAsync.css';"
       "link.media = 'all';"
       "attach.appendChild(link);"
       "</script>"
       "<div id=\"after\"></div>"
       "</body></html>");

   testing::RunPendingTasks();
   EXPECT_TRUE(GetDocument().getElementById("before"));
   EXPECT_TRUE(GetDocument().getElementById("after"));

   css_async_resource.Complete("");
 }

 TEST_F(HTMLDocumentParserSimTest, NoRewindNoDocWrite) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<html><body>no doc write"
       "</body></html>");

   testing::RunPendingTasks();
   histogram_.ExpectTotalCount("Parser.DiscardedTokenCount", 0);
 }

 TEST_F(HTMLDocumentParserSimTest, RewindBrokenToken) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<script>"
       "document.write('<a');"
       "</script>");

   testing::RunPendingTasks();
   histogram_.ExpectTotalCount("Parser.DiscardedTokenCount", 1);
 }

 TEST_F(HTMLDocumentParserSimTest, RewindDifferentNamespace) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<script>"
       "document.write('<svg>');"
       "</script>");

   testing::RunPendingTasks();
   histogram_.ExpectTotalCount("Parser.DiscardedTokenCount", 1);
 }

 TEST_F(HTMLDocumentParserSimTest, NoRewindSaneDocWrite1) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<script>"
       "document.write('<script>console.log(\'hello world\');<\\/script>');"
       "</script>");

   testing::RunPendingTasks();
   histogram_.ExpectTotalCount("Parser.DiscardedTokenCount", 0);
 }

 TEST_F(HTMLDocumentParserSimTest, NoRewindSaneDocWrite2) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<script>"
       "document.write('<p>hello world<\\/p><a>yo');"
       "</script>");

   testing::RunPendingTasks();
   histogram_.ExpectTotalCount("Parser.DiscardedTokenCount", 0);
 }

 TEST_F(HTMLDocumentParserSimTest, NoRewindSaneDocWriteWithTitle) {
   SimRequest main_resource("https://example.com/test.html", "text/html");
   LoadURL("https://example.com/test.html");

   main_resource.Complete(
       "<!DOCTYPE html>"
       "<html>"
       "<head>"
       "<title></title>"
       "<script>document.write('<p>testing');</script>"
       "</head>"
       "<body>"
       "</body>"
       "</html>");

   testing::RunPendingTasks();
   histogram_.ExpectTotalCount("Parser.DiscardedTokenCount", 0);
 }

 }  // namespace blink
	// Copyright 2017 The Chromium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	#include "core/html/parser/HTMLDocumentParser.h"

	#include "core/dom/Document.h"
	#include "core/testing/sim/SimRequest.h"
	#include "core/testing/sim/SimTest.h"
	#include "platform/testing/HistogramTester.h"
	#include "platform/testing/UnitTestHelpers.h"
	#include "testing/gtest/include/gtest/gtest.h"

	namespace blink {

	using namespace HTMLNames;

	class HTMLDocumentParserSimTest : public SimTest {
	protected:
	HTMLDocumentParserSimTest() {
	Document::SetThreadedParsingEnabledForTesting(true);
	}
	HistogramTester histogram_;
	};

	class HTMLDocumentParserLoadingTest
	: public HTMLDocumentParserSimTest,
	public ::testing::WithParamInterface<bool> {
	protected:
	HTMLDocumentParserLoadingTest() {
	Document::SetThreadedParsingEnabledForTesting(GetParam());
	}
	};

	INSTANTIATE_TEST_CASE_P(Threaded,
	HTMLDocumentParserLoadingTest,
	::testing::Values(true));
	INSTANTIATE_TEST_CASE_P(NotThreaded,
	HTMLDocumentParserLoadingTest,
	::testing::Values(false));

	TEST_P(HTMLDocumentParserLoadingTest,
	ShouldNotPauseParsingForExternalStylesheetsInHead) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	SimRequest css_head_resource("https://example.com/testHead.css", "text/css");

	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<html><head>"
	"<link rel=stylesheet href=testHead.css>"
	"</head><body>"
	"<div id=\"bodyDiv\"></div>"
	"</body></html>");

	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("bodyDiv"));
	css_head_resource.Complete("");
	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("bodyDiv"));
	}

	TEST_P(HTMLDocumentParserLoadingTest,
	ShouldNotPauseParsingForExternalStylesheetsImportedInHead) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	SimRequest css_head_resource("https://example.com/testHead.css", "text/css");

	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<html><head>"
	"<style>"
	"@import 'testHead.css'"
	"</style>"
	"</head><body>"
	"<div id=\"bodyDiv\"></div>"
	"</body></html>");

	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("bodyDiv"));
	css_head_resource.Complete("");
	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("bodyDiv"));
	}

	TEST_P(HTMLDocumentParserLoadingTest,
	ShouldPauseParsingForExternalStylesheetsInBody) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	SimRequest css_head_resource("https://example.com/testHead.css", "text/css");
	SimRequest css_body_resource("https://example.com/testBody.css", "text/css");

	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<html><head>"
	"<link rel=stylesheet href=testHead.css>"
	"</head><body>"
	"<div id=\"before\"></div>"
	"<link rel=stylesheet href=testBody.css>"
	"<div id=\"after\"></div>"
	"</body></html>");

	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_FALSE(GetDocument().getElementById("after"));

	// Completing the head css shouldn't change anything
	css_head_resource.Complete("");
	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_FALSE(GetDocument().getElementById("after"));

	// Completing the body resource and pumping the tasks should continue parsing
	// and create the "after" div.
	css_body_resource.Complete("");
	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_TRUE(GetDocument().getElementById("after"));
	}

	TEST_P(HTMLDocumentParserLoadingTest,
	ShouldPauseParsingForExternalStylesheetsInBodyIncremental) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	SimRequest css_head_resource("https://example.com/testHead.css", "text/css");
	SimRequest css_body_resource1("https://example.com/testBody1.css",
	"text/css");
	SimRequest css_body_resource2("https://example.com/testBody2.css",
	"text/css");
	SimRequest css_body_resource3("https://example.com/testBody3.css",
	"text/css");

	LoadURL("https://example.com/test.html");

	main_resource.Start();
	main_resource.Write(
	"<!DOCTYPE html>"
	"<html><head>"
	"<link rel=stylesheet href=testHead.css>"
	"</head><body>"
	"<div id=\"before\"></div>"
	"<link rel=stylesheet href=testBody1.css>"
	"<div id=\"after1\"></div>");

	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_FALSE(GetDocument().getElementById("after1"));
	EXPECT_FALSE(GetDocument().getElementById("after2"));
	EXPECT_FALSE(GetDocument().getElementById("after3"));

	main_resource.Write(
	"<link rel=stylesheet href=testBody2.css>"
	"<div id=\"after2\"></div>");

	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_FALSE(GetDocument().getElementById("after1"));
	EXPECT_FALSE(GetDocument().getElementById("after2"));
	EXPECT_FALSE(GetDocument().getElementById("after3"));

	main_resource.Complete(
	"<link rel=stylesheet href=testBody3.css>"
	"<div id=\"after3\"></div>"
	"</body></html>");

	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_FALSE(GetDocument().getElementById("after1"));
	EXPECT_FALSE(GetDocument().getElementById("after2"));
	EXPECT_FALSE(GetDocument().getElementById("after3"));

	// Completing the head css shouldn't change anything
	css_head_resource.Complete("");
	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_FALSE(GetDocument().getElementById("after1"));
	EXPECT_FALSE(GetDocument().getElementById("after2"));
	EXPECT_FALSE(GetDocument().getElementById("after3"));

	// Completing the second css shouldn't change anything
	css_body_resource2.Complete("");
	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_FALSE(GetDocument().getElementById("after1"));
	EXPECT_FALSE(GetDocument().getElementById("after2"));
	EXPECT_FALSE(GetDocument().getElementById("after3"));

	// Completing the first css should allow the parser to continue past it and
	// the second css which was already completed and then pause again before the
	// third css.
	css_body_resource1.Complete("");
	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_TRUE(GetDocument().getElementById("after1"));
	EXPECT_TRUE(GetDocument().getElementById("after2"));
	EXPECT_FALSE(GetDocument().getElementById("after3"));

	// Completing the third css should let it continue to the end.
	css_body_resource3.Complete("");
	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_TRUE(GetDocument().getElementById("after1"));
	EXPECT_TRUE(GetDocument().getElementById("after2"));
	EXPECT_TRUE(GetDocument().getElementById("after3"));
	}

	TEST_P(HTMLDocumentParserLoadingTest,
	ShouldNotPauseParsingForExternalNonMatchingStylesheetsInBody) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	SimRequest css_head_resource("https://example.com/testHead.css", "text/css");

	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<html><head>"
	"<link rel=stylesheet href=testHead.css>"
	"</head><body>"
	"<div id=\"before\"></div>"
	"<link rel=stylesheet href=testBody.css type='print'>"
	"<div id=\"after\"></div>"
	"</body></html>");

	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_TRUE(GetDocument().getElementById("after"));

	// Completing the head css shouldn't change anything
	css_head_resource.Complete("");
	}

	TEST_P(HTMLDocumentParserLoadingTest,
	ShouldPauseParsingForExternalStylesheetsImportedInBody) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	SimRequest css_head_resource("https://example.com/testHead.css", "text/css");
	SimRequest css_body_resource("https://example.com/testBody.css", "text/css");

	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<html><head>"
	"<link rel=stylesheet href=testHead.css>"
	"</head><body>"
	"<div id=\"before\"></div>"
	"<style>"
	"@import 'testBody.css'"
	"</style>"
	"<div id=\"after\"></div>"
	"</body></html>");

	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_FALSE(GetDocument().getElementById("after"));

	// Completing the head css shouldn't change anything
	css_head_resource.Complete("");
	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_FALSE(GetDocument().getElementById("after"));

	// Completing the body resource and pumping the tasks should continue parsing
	// and create the "after" div.
	css_body_resource.Complete("");
	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_TRUE(GetDocument().getElementById("after"));
	}

	TEST_P(HTMLDocumentParserLoadingTest,
	ShouldPauseParsingForExternalStylesheetsWrittenInBody) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	SimRequest css_head_resource("https://example.com/testHead.css", "text/css");
	SimRequest css_body_resource("https://example.com/testBody.css", "text/css");

	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<html><head>"
	"<link rel=stylesheet href=testHead.css>"
	"</head><body>"
	"<div id=\"before\"></div>"
	"<script>"
	"document.write('<link rel=stylesheet href=testBody.css>');"
	"</script>"
	"<div id=\"after\"></div>"
	"</body></html>");

	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_FALSE(GetDocument().getElementById("after"));

	// Completing the head css shouldn't change anything
	css_head_resource.Complete("");
	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_FALSE(GetDocument().getElementById("after"));

	// Completing the body resource and pumping the tasks should continue parsing
	// and create the "after" div.
	css_body_resource.Complete("");
	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_TRUE(GetDocument().getElementById("after"));
	}

	TEST_P(HTMLDocumentParserLoadingTest,
	PendingHeadStylesheetShouldNotBlockParserForBodyInlineStyle) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	SimRequest css_head_resource("https://example.com/testHead.css", "text/css");

	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<html><head>"
	"<link rel=stylesheet href=testHead.css>"
	"</head><body>"
	"<div id=\"before\"></div>"
	"<style>"
	"</style>"
	"<div id=\"after\"></div>"
	"</body></html>");

	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_TRUE(GetDocument().getElementById("after"));
	css_head_resource.Complete("");
	}

	TEST_P(HTMLDocumentParserLoadingTest,
	PendingHeadStylesheetShouldNotBlockParserForBodyShadowDom) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	SimRequest css_head_resource("https://example.com/testHead.css", "text/css");

	LoadURL("https://example.com/test.html");

	// The marquee tag has a shadow DOM that synchronously applies a stylesheet.
	main_resource.Complete(
	"<!DOCTYPE html>"
	"<html><head>"
	"<link rel=stylesheet href=testHead.css>"
	"</head><body>"
	"<div id=\"before\"></div>"
	"<marquee>Marquee</marquee>"
	"<div id=\"after\"></div>"
	"</body></html>");

	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_TRUE(GetDocument().getElementById("after"));
	css_head_resource.Complete("");
	}

	TEST_P(HTMLDocumentParserLoadingTest,
	ShouldNotPauseParsingForExternalStylesheetsAttachedInBody) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	SimRequest css_async_resource("https://example.com/testAsync.css",
	"text/css");

	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<html><head>"
	"</head><body>"
	"<div id=\"before\"></div>"
	"<script>"
	"var attach = document.getElementsByTagName('script')[0];"
	"var link = document.createElement('link');"
	"link.rel = 'stylesheet';"
	"link.type = 'text/css';"
	"link.href = 'testAsync.css';"
	"link.media = 'all';"
	"attach.appendChild(link);"
	"</script>"
	"<div id=\"after\"></div>"
	"</body></html>");

	testing::RunPendingTasks();
	EXPECT_TRUE(GetDocument().getElementById("before"));
	EXPECT_TRUE(GetDocument().getElementById("after"));

	css_async_resource.Complete("");
	}

	TEST_F(HTMLDocumentParserSimTest, NoRewindNoDocWrite) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<html><body>no doc write"
	"</body></html>");

	testing::RunPendingTasks();
	histogram_.ExpectTotalCount("Parser.DiscardedTokenCount", 0);
	}

	TEST_F(HTMLDocumentParserSimTest, RewindBrokenToken) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<script>"
	"document.write('<a');"
	"</script>");

	testing::RunPendingTasks();
	histogram_.ExpectTotalCount("Parser.DiscardedTokenCount", 1);
	}

	TEST_F(HTMLDocumentParserSimTest, RewindDifferentNamespace) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<script>"
	"document.write('<svg>');"
	"</script>");

	testing::RunPendingTasks();
	histogram_.ExpectTotalCount("Parser.DiscardedTokenCount", 1);
	}

	TEST_F(HTMLDocumentParserSimTest, NoRewindSaneDocWrite1) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<script>"
	"document.write('<script>console.log(\'hello world\');<\\/script>');"
	"</script>");

	testing::RunPendingTasks();
	histogram_.ExpectTotalCount("Parser.DiscardedTokenCount", 0);
	}

	TEST_F(HTMLDocumentParserSimTest, NoRewindSaneDocWrite2) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<script>"
	"document.write('<p>hello world<\\/p><a>yo');"
	"</script>");

	testing::RunPendingTasks();
	histogram_.ExpectTotalCount("Parser.DiscardedTokenCount", 0);
	}

	TEST_F(HTMLDocumentParserSimTest, NoRewindSaneDocWriteWithTitle) {
	SimRequest main_resource("https://example.com/test.html", "text/html");
	LoadURL("https://example.com/test.html");

	main_resource.Complete(
	"<!DOCTYPE html>"
	"<html>"
	"<head>"
	"<title></title>"
	"<script>document.write('<p>testing');</script>"
	"</head>"
	"<body>"
	"</body>"
	"</html>");

	testing::RunPendingTasks();
	histogram_.ExpectTotalCount("Parser.DiscardedTokenCount", 0);
	}

	} // namespace blink