third_party/WebKit/Source/core/dom/DocumentTest.cpp - chromium/src - Git at Google

 /*
  * Copyright (c) 2014, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 #include "core/dom/Document.h"

 #include "core/dom/DocumentVisibilityObserver.h"
 #include "core/frame/FrameView.h"
 #include "core/html/HTMLHeadElement.h"
 #include "core/html/HTMLLinkElement.h"
 #include "core/testing/DummyPageHolder.h"
 #include "platform/heap/Handle.h"
 #include "platform/weborigin/ReferrerPolicy.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"

 namespace blink {

 class DocumentTest : public ::testing::Test {
 protected:
     void SetUp() override;

 #if ENABLE(OILPAN)
     void TearDown() override
     {
         Heap::collectAllGarbage();
     }
 #endif

     Document& document() const { return m_dummyPageHolder->document(); }
     Page& page() const { return m_dummyPageHolder->page(); }

     void setHtmlInnerHTML(const char*);

 private:
     OwnPtr<DummyPageHolder> m_dummyPageHolder;
 };

 void DocumentTest::SetUp()
 {
     m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
 }

 void DocumentTest::setHtmlInnerHTML(const char* htmlContent)
 {
     document().documentElement()->setInnerHTML(String::fromUTF8(htmlContent), ASSERT_NO_EXCEPTION);
     document().view()->updateAllLifecyclePhases();
 }

 class MockDocumentVisibilityObserver
     : public NoBaseWillBeGarbageCollectedFinalized<MockDocumentVisibilityObserver>
     , public DocumentVisibilityObserver {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MockDocumentVisibilityObserver);
 public:
     static PassOwnPtrWillBeRawPtr<MockDocumentVisibilityObserver> create(Document& document)
     {
         return adoptPtrWillBeNoop(new MockDocumentVisibilityObserver(document));
     }

     DEFINE_INLINE_VIRTUAL_TRACE()
     {
         DocumentVisibilityObserver::trace(visitor);
     }

     MOCK_METHOD1(didChangeVisibilityState, void(PageVisibilityState));
     MOCK_METHOD0(willDetachDocument, void());

 private:
     MockDocumentVisibilityObserver(Document& document) : DocumentVisibilityObserver(document) { }
 };

 TEST_F(DocumentTest, VisibilityOberver)
 {
     page().setVisibilityState(PageVisibilityStateVisible, true); // initial state
     OwnPtrWillBeRawPtr<MockDocumentVisibilityObserver> observer1 = MockDocumentVisibilityObserver::create(document());

     {
         OwnPtrWillBeRawPtr<MockDocumentVisibilityObserver> observer2 = MockDocumentVisibilityObserver::create(document());
         EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
         EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
         EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
         EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
         ::testing::Mock::VerifyAndClearExpectations(observer1.get());
         ::testing::Mock::VerifyAndClearExpectations(observer2.get());

         EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateHidden)).Times(1);
         EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
         EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateHidden)).Times(1);
         EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
         page().setVisibilityState(PageVisibilityStateHidden, false);
         ::testing::Mock::VerifyAndClearExpectations(observer1.get());
         ::testing::Mock::VerifyAndClearExpectations(observer2.get());

         EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
         EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
         EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
         EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
         page().setVisibilityState(PageVisibilityStateHidden, false);
         ::testing::Mock::VerifyAndClearExpectations(observer1.get());
         ::testing::Mock::VerifyAndClearExpectations(observer2.get());

         EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
         EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateVisible)).Times(1);
         EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
         EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
         OwnPtr<DummyPageHolder> alternatePage = DummyPageHolder::create(IntSize(800, 600));
         Document& alternateDocument = alternatePage->document();
         observer2->setObservedDocument(alternateDocument);
         page().setVisibilityState(PageVisibilityStateVisible, false);
         ::testing::Mock::VerifyAndClearExpectations(observer1.get());
         ::testing::Mock::VerifyAndClearExpectations(observer2.get());

         EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateHidden)).Times(1);
         EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
         EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateHidden)).Times(1);
         EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
         observer2->setObservedDocument(document());
         page().setVisibilityState(PageVisibilityStateHidden, false);
         ::testing::Mock::VerifyAndClearExpectations(observer1.get());
         ::testing::Mock::VerifyAndClearExpectations(observer2.get());
     }

     // observer2 destroyed
     EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
     EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateVisible)).Times(1);
     page().setVisibilityState(PageVisibilityStateVisible, false);
 }

 // This tests that we properly resize and re-layout pages for printing in the presence of
 // media queries effecting elements in a subtree layout boundary
 TEST_F(DocumentTest, PrintRelayout)
 {
     setHtmlInnerHTML(
         "<style>"
         "    div {"
         "        width: 100px;"
         "        height: 100px;"
         "        overflow: hidden;"
         "    }"
         "    span {"
         "        width: 50px;"
         "        height: 50px;"
         "    }"
         "    @media screen {"
         "        span {"
         "            width: 20px;"
         "        }"
         "    }"
         "</style>"
         "<p><div><span></span></div></p>");
     FloatSize pageSize(400, 400);
     float maximumShrinkRatio = 1.6;

     document().frame()->setPrinting(true, pageSize, pageSize, maximumShrinkRatio);
     EXPECT_EQ(document().documentElement()->offsetWidth(), 400);
     document().frame()->setPrinting(false, FloatSize(), FloatSize(), 0);
     EXPECT_EQ(document().documentElement()->offsetWidth(), 800);

 }

 // This test checks that Documunt::linkManifest() returns a value conform to the specification.
 TEST_F(DocumentTest, LinkManifest)
 {
     // Test the default result.
     EXPECT_EQ(0, document().linkManifest());

     // Check that we use the first manifest with <link rel=manifest>
     RefPtrWillBeRawPtr<HTMLLinkElement> link = HTMLLinkElement::create(document(), false);
     link->setAttribute(blink::HTMLNames::relAttr, "manifest");
     link->setAttribute(blink::HTMLNames::hrefAttr, "foo.json");
     document().head()->appendChild(link);
     EXPECT_EQ(link, document().linkManifest());

     RefPtrWillBeRawPtr<HTMLLinkElement> link2 = HTMLLinkElement::create(document(), false);
     link2->setAttribute(blink::HTMLNames::relAttr, "manifest");
     link2->setAttribute(blink::HTMLNames::hrefAttr, "bar.json");
     document().head()->insertBefore(link2, link.get());
     EXPECT_EQ(link2, document().linkManifest());
     document().head()->appendChild(link2);
     EXPECT_EQ(link, document().linkManifest());

     // Check that crazy URLs are accepted.
     link->setAttribute(blink::HTMLNames::hrefAttr, "http:foo.json");
     EXPECT_EQ(link, document().linkManifest());

     // Check that empty URLs are accepted.
     link->setAttribute(blink::HTMLNames::hrefAttr, "");
     EXPECT_EQ(link, document().linkManifest());

     // Check that URLs from different origins are accepted.
     link->setAttribute(blink::HTMLNames::hrefAttr, "http://example.org/manifest.json");
     EXPECT_EQ(link, document().linkManifest());
     link->setAttribute(blink::HTMLNames::hrefAttr, "http://foo.example.org/manifest.json");
     EXPECT_EQ(link, document().linkManifest());
     link->setAttribute(blink::HTMLNames::hrefAttr, "http://foo.bar/manifest.json");
     EXPECT_EQ(link, document().linkManifest());

     // More than one token in @rel is accepted.
     link->setAttribute(blink::HTMLNames::relAttr, "foo bar manifest");
     EXPECT_EQ(link, document().linkManifest());

     // Such as spaces around the token.
     link->setAttribute(blink::HTMLNames::relAttr, " manifest ");
     EXPECT_EQ(link, document().linkManifest());

     // Check that rel=manifest actually matters.
     link->setAttribute(blink::HTMLNames::relAttr, "");
     EXPECT_EQ(link2, document().linkManifest());
     link->setAttribute(blink::HTMLNames::relAttr, "manifest");

     // Check that link outside of the <head> are ignored.
     document().head()->removeChild(link.get(), ASSERT_NO_EXCEPTION);
     document().head()->removeChild(link2.get(), ASSERT_NO_EXCEPTION);
     EXPECT_EQ(0, document().linkManifest());
     document().body()->appendChild(link);
     EXPECT_EQ(0, document().linkManifest());
     document().head()->appendChild(link);
     document().head()->appendChild(link2);

     // Check that some attribute values do not have an effect.
     link->setAttribute(blink::HTMLNames::crossoriginAttr, "use-credentials");
     EXPECT_EQ(link, document().linkManifest());
     link->setAttribute(blink::HTMLNames::hreflangAttr, "klingon");
     EXPECT_EQ(link, document().linkManifest());
     link->setAttribute(blink::HTMLNames::typeAttr, "image/gif");
     EXPECT_EQ(link, document().linkManifest());
     link->setAttribute(blink::HTMLNames::sizesAttr, "16x16");
     EXPECT_EQ(link, document().linkManifest());
     link->setAttribute(blink::HTMLNames::mediaAttr, "print");
     EXPECT_EQ(link, document().linkManifest());
 }

 TEST_F(DocumentTest, referrerPolicyParsing)
 {
     EXPECT_EQ(ReferrerPolicyDefault, document().referrerPolicy());

     struct TestCase {
         const char* policy;
         ReferrerPolicy expected;
     } tests[] = {
         { "always", ReferrerPolicyAlways },
         { "default", ReferrerPolicyNoReferrerWhenDowngrade },
         { "never", ReferrerPolicyNever },
         { "no-referrer", ReferrerPolicyNever },
         { "no-referrer-when-downgrade", ReferrerPolicyNoReferrerWhenDowngrade },
         { "not-a-real-policy", ReferrerPolicyDefault },
         { "origin", ReferrerPolicyOrigin },
         { "origin-when-crossorigin", ReferrerPolicyOriginWhenCrossOrigin },
         { "origin-when-cross-origin", ReferrerPolicyOriginWhenCrossOrigin },
         { "unsafe-url", ReferrerPolicyAlways },
     };

     for (auto test : tests) {
         document().setReferrerPolicy(ReferrerPolicyDefault);

         document().processReferrerPolicy(test.policy);
         EXPECT_EQ(test.expected, document().referrerPolicy()) << test.policy;
     }
 }

 // This tests that we mark Frame Timing requests as dirty correctly when we
 // update style.
 TEST_F(DocumentTest, FrameTimingRelayout)
 {
     setHtmlInnerHTML(
         "<style>"
         "    #div1 {"
         "        width: 100px;"
         "        height: 100px;"
         "    }"
         "</style>"
         "<p><div id='div1'><span>test</span></div></p>");

     EXPECT_FALSE(document().view()->frameTimingRequestsDirty());

     // Just calling update should have no effect.
     document().updateLayoutTreeIfNeeded();
     EXPECT_FALSE(document().view()->frameTimingRequestsDirty());

     // Calling update with a style change should flag Frame Timing as dirty.
     document().setChildNeedsStyleRecalc();
     document().updateLayoutTreeIfNeeded();
     EXPECT_TRUE(document().view()->frameTimingRequestsDirty());
 }

 TEST_F(DocumentTest, OutgoingReferrer)
 {
     document().setURL(KURL(KURL(), "https://www.example.com/hoge#fuga?piyo"));
     document().setSecurityOrigin(SecurityOrigin::create(KURL(KURL(), "https://www.example.com/")));
     EXPECT_EQ("https://www.example.com/hoge", document().outgoingReferrer());
 }

 TEST_F(DocumentTest, OutgoingReferrerWithUniqueOrigin)
 {
     document().setURL(KURL(KURL(), "https://www.example.com/hoge#fuga?piyo"));
     document().setSecurityOrigin(SecurityOrigin::createUnique());
     EXPECT_EQ(String(), document().outgoingReferrer());
 }

 TEST_F(DocumentTest, StyleVersion)
 {
     setHtmlInnerHTML(
         "<style>"
         "    .a * { color: green }"
         "    .b .c { color: green }"
         "</style>"
         "<div id='x'><span class='c'></span></div>");

     Element* element = document().getElementById("x");
     EXPECT_TRUE(element);

     uint64_t previousStyleVersion = document().styleVersion();
     element->setAttribute(blink::HTMLNames::classAttr, "notfound");
     EXPECT_EQ(previousStyleVersion, document().styleVersion());

     document().view()->updateAllLifecyclePhases();

     previousStyleVersion = document().styleVersion();
     element->setAttribute(blink::HTMLNames::classAttr, "a");
     EXPECT_NE(previousStyleVersion, document().styleVersion());

     document().view()->updateAllLifecyclePhases();

     previousStyleVersion = document().styleVersion();
     element->setAttribute(blink::HTMLNames::classAttr, "a b");
     EXPECT_NE(previousStyleVersion, document().styleVersion());
 }

 } // namespace blink
	/*
	* Copyright (c) 2014, Google Inc. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are
	* met:
	*
	* * Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* * Redistributions in binary form must reproduce the above
	* copyright notice, this list of conditions and the following disclaimer
	* in the documentation and/or other materials provided with the
	* distribution.
	* * Neither the name of Google Inc. nor the names of its
	* contributors may be used to endorse or promote products derived from
	* this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#include "core/dom/Document.h"

	#include "core/dom/DocumentVisibilityObserver.h"
	#include "core/frame/FrameView.h"
	#include "core/html/HTMLHeadElement.h"
	#include "core/html/HTMLLinkElement.h"
	#include "core/testing/DummyPageHolder.h"
	#include "platform/heap/Handle.h"
	#include "platform/weborigin/ReferrerPolicy.h"
	#include "platform/weborigin/SecurityOrigin.h"
	#include "testing/gmock/include/gmock/gmock.h"
	#include "testing/gtest/include/gtest/gtest.h"

	namespace blink {

	class DocumentTest : public ::testing::Test {
	protected:
	void SetUp() override;

	#if ENABLE(OILPAN)
	void TearDown() override
	{
	Heap::collectAllGarbage();
	}
	#endif

	Document& document() const { return m_dummyPageHolder->document(); }
	Page& page() const { return m_dummyPageHolder->page(); }

	void setHtmlInnerHTML(const char*);

	private:
	OwnPtr<DummyPageHolder> m_dummyPageHolder;
	};

	void DocumentTest::SetUp()
	{
	m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
	}

	void DocumentTest::setHtmlInnerHTML(const char* htmlContent)
	{
	document().documentElement()->setInnerHTML(String::fromUTF8(htmlContent), ASSERT_NO_EXCEPTION);
	document().view()->updateAllLifecyclePhases();
	}

	class MockDocumentVisibilityObserver
	: public NoBaseWillBeGarbageCollectedFinalized<MockDocumentVisibilityObserver>
	, public DocumentVisibilityObserver {
	WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MockDocumentVisibilityObserver);
	public:
	static PassOwnPtrWillBeRawPtr<MockDocumentVisibilityObserver> create(Document& document)
	{
	return adoptPtrWillBeNoop(new MockDocumentVisibilityObserver(document));
	}

	DEFINE_INLINE_VIRTUAL_TRACE()
	{
	DocumentVisibilityObserver::trace(visitor);
	}

	MOCK_METHOD1(didChangeVisibilityState, void(PageVisibilityState));
	MOCK_METHOD0(willDetachDocument, void());

	private:
	MockDocumentVisibilityObserver(Document& document) : DocumentVisibilityObserver(document) { }
	};

	TEST_F(DocumentTest, VisibilityOberver)
	{
	page().setVisibilityState(PageVisibilityStateVisible, true); // initial state
	OwnPtrWillBeRawPtr<MockDocumentVisibilityObserver> observer1 = MockDocumentVisibilityObserver::create(document());

	{
	OwnPtrWillBeRawPtr<MockDocumentVisibilityObserver> observer2 = MockDocumentVisibilityObserver::create(document());
	EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
	EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
	EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
	EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
	::testing::Mock::VerifyAndClearExpectations(observer1.get());
	::testing::Mock::VerifyAndClearExpectations(observer2.get());

	EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateHidden)).Times(1);
	EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
	EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateHidden)).Times(1);
	EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
	page().setVisibilityState(PageVisibilityStateHidden, false);
	::testing::Mock::VerifyAndClearExpectations(observer1.get());
	::testing::Mock::VerifyAndClearExpectations(observer2.get());

	EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
	EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
	EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
	EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
	page().setVisibilityState(PageVisibilityStateHidden, false);
	::testing::Mock::VerifyAndClearExpectations(observer1.get());
	::testing::Mock::VerifyAndClearExpectations(observer2.get());

	EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
	EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateVisible)).Times(1);
	EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
	EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
	OwnPtr<DummyPageHolder> alternatePage = DummyPageHolder::create(IntSize(800, 600));
	Document& alternateDocument = alternatePage->document();
	observer2->setObservedDocument(alternateDocument);
	page().setVisibilityState(PageVisibilityStateVisible, false);
	::testing::Mock::VerifyAndClearExpectations(observer1.get());
	::testing::Mock::VerifyAndClearExpectations(observer2.get());

	EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateHidden)).Times(1);
	EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
	EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateHidden)).Times(1);
	EXPECT_CALL(*observer2, didChangeVisibilityState(PageVisibilityStateVisible)).Times(0);
	observer2->setObservedDocument(document());
	page().setVisibilityState(PageVisibilityStateHidden, false);
	::testing::Mock::VerifyAndClearExpectations(observer1.get());
	::testing::Mock::VerifyAndClearExpectations(observer2.get());
	}

	// observer2 destroyed
	EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateHidden)).Times(0);
	EXPECT_CALL(*observer1, didChangeVisibilityState(PageVisibilityStateVisible)).Times(1);
	page().setVisibilityState(PageVisibilityStateVisible, false);
	}

	// This tests that we properly resize and re-layout pages for printing in the presence of
	// media queries effecting elements in a subtree layout boundary
	TEST_F(DocumentTest, PrintRelayout)
	{
	setHtmlInnerHTML(
	"<style>"
	" div {"
	" width: 100px;"
	" height: 100px;"
	" overflow: hidden;"
	" }"
	" span {"
	" width: 50px;"
	" height: 50px;"
	" }"
	" @media screen {"
	" span {"
	" width: 20px;"
	" }"
	" }"
	"</style>"
	"<p><div><span></span></div></p>");
	FloatSize pageSize(400, 400);
	float maximumShrinkRatio = 1.6;

	document().frame()->setPrinting(true, pageSize, pageSize, maximumShrinkRatio);
	EXPECT_EQ(document().documentElement()->offsetWidth(), 400);
	document().frame()->setPrinting(false, FloatSize(), FloatSize(), 0);
	EXPECT_EQ(document().documentElement()->offsetWidth(), 800);

	}

	// This test checks that Documunt::linkManifest() returns a value conform to the specification.
	TEST_F(DocumentTest, LinkManifest)
	{
	// Test the default result.
	EXPECT_EQ(0, document().linkManifest());

	// Check that we use the first manifest with <link rel=manifest>
	RefPtrWillBeRawPtr<HTMLLinkElement> link = HTMLLinkElement::create(document(), false);
	link->setAttribute(blink::HTMLNames::relAttr, "manifest");
	link->setAttribute(blink::HTMLNames::hrefAttr, "foo.json");
	document().head()->appendChild(link);
	EXPECT_EQ(link, document().linkManifest());

	RefPtrWillBeRawPtr<HTMLLinkElement> link2 = HTMLLinkElement::create(document(), false);
	link2->setAttribute(blink::HTMLNames::relAttr, "manifest");
	link2->setAttribute(blink::HTMLNames::hrefAttr, "bar.json");
	document().head()->insertBefore(link2, link.get());
	EXPECT_EQ(link2, document().linkManifest());
	document().head()->appendChild(link2);
	EXPECT_EQ(link, document().linkManifest());

	// Check that crazy URLs are accepted.
	link->setAttribute(blink::HTMLNames::hrefAttr, "http:foo.json");
	EXPECT_EQ(link, document().linkManifest());

	// Check that empty URLs are accepted.
	link->setAttribute(blink::HTMLNames::hrefAttr, "");
	EXPECT_EQ(link, document().linkManifest());

	// Check that URLs from different origins are accepted.
	link->setAttribute(blink::HTMLNames::hrefAttr, "http://example.org/manifest.json");
	EXPECT_EQ(link, document().linkManifest());
	link->setAttribute(blink::HTMLNames::hrefAttr, "http://foo.example.org/manifest.json");
	EXPECT_EQ(link, document().linkManifest());
	link->setAttribute(blink::HTMLNames::hrefAttr, "http://foo.bar/manifest.json");
	EXPECT_EQ(link, document().linkManifest());

	// More than one token in @rel is accepted.
	link->setAttribute(blink::HTMLNames::relAttr, "foo bar manifest");
	EXPECT_EQ(link, document().linkManifest());

	// Such as spaces around the token.
	link->setAttribute(blink::HTMLNames::relAttr, " manifest ");
	EXPECT_EQ(link, document().linkManifest());

	// Check that rel=manifest actually matters.
	link->setAttribute(blink::HTMLNames::relAttr, "");
	EXPECT_EQ(link2, document().linkManifest());
	link->setAttribute(blink::HTMLNames::relAttr, "manifest");

	// Check that link outside of the <head> are ignored.
	document().head()->removeChild(link.get(), ASSERT_NO_EXCEPTION);
	document().head()->removeChild(link2.get(), ASSERT_NO_EXCEPTION);
	EXPECT_EQ(0, document().linkManifest());
	document().body()->appendChild(link);
	EXPECT_EQ(0, document().linkManifest());
	document().head()->appendChild(link);
	document().head()->appendChild(link2);

	// Check that some attribute values do not have an effect.
	link->setAttribute(blink::HTMLNames::crossoriginAttr, "use-credentials");
	EXPECT_EQ(link, document().linkManifest());
	link->setAttribute(blink::HTMLNames::hreflangAttr, "klingon");
	EXPECT_EQ(link, document().linkManifest());
	link->setAttribute(blink::HTMLNames::typeAttr, "image/gif");
	EXPECT_EQ(link, document().linkManifest());
	link->setAttribute(blink::HTMLNames::sizesAttr, "16x16");
	EXPECT_EQ(link, document().linkManifest());
	link->setAttribute(blink::HTMLNames::mediaAttr, "print");
	EXPECT_EQ(link, document().linkManifest());
	}

	TEST_F(DocumentTest, referrerPolicyParsing)
	{
	EXPECT_EQ(ReferrerPolicyDefault, document().referrerPolicy());

	struct TestCase {
	const char* policy;
	ReferrerPolicy expected;
	} tests[] = {
	{ "always", ReferrerPolicyAlways },
	{ "default", ReferrerPolicyNoReferrerWhenDowngrade },
	{ "never", ReferrerPolicyNever },
	{ "no-referrer", ReferrerPolicyNever },
	{ "no-referrer-when-downgrade", ReferrerPolicyNoReferrerWhenDowngrade },
	{ "not-a-real-policy", ReferrerPolicyDefault },
	{ "origin", ReferrerPolicyOrigin },
	{ "origin-when-crossorigin", ReferrerPolicyOriginWhenCrossOrigin },
	{ "origin-when-cross-origin", ReferrerPolicyOriginWhenCrossOrigin },
	{ "unsafe-url", ReferrerPolicyAlways },
	};

	for (auto test : tests) {
	document().setReferrerPolicy(ReferrerPolicyDefault);

	document().processReferrerPolicy(test.policy);
	EXPECT_EQ(test.expected, document().referrerPolicy()) << test.policy;
	}
	}

	// This tests that we mark Frame Timing requests as dirty correctly when we
	// update style.
	TEST_F(DocumentTest, FrameTimingRelayout)
	{
	setHtmlInnerHTML(
	"<style>"
	" #div1 {"
	" width: 100px;"
	" height: 100px;"
	" }"
	"</style>"
	"<p><div id='div1'><span>test</span></div></p>");

	EXPECT_FALSE(document().view()->frameTimingRequestsDirty());

	// Just calling update should have no effect.
	document().updateLayoutTreeIfNeeded();
	EXPECT_FALSE(document().view()->frameTimingRequestsDirty());

	// Calling update with a style change should flag Frame Timing as dirty.
	document().setChildNeedsStyleRecalc();
	document().updateLayoutTreeIfNeeded();
	EXPECT_TRUE(document().view()->frameTimingRequestsDirty());
	}

	TEST_F(DocumentTest, OutgoingReferrer)
	{
	document().setURL(KURL(KURL(), "https://www.example.com/hoge#fuga?piyo"));
	document().setSecurityOrigin(SecurityOrigin::create(KURL(KURL(), "https://www.example.com/")));
	EXPECT_EQ("https://www.example.com/hoge", document().outgoingReferrer());
	}

	TEST_F(DocumentTest, OutgoingReferrerWithUniqueOrigin)
	{
	document().setURL(KURL(KURL(), "https://www.example.com/hoge#fuga?piyo"));
	document().setSecurityOrigin(SecurityOrigin::createUnique());
	EXPECT_EQ(String(), document().outgoingReferrer());
	}

	TEST_F(DocumentTest, StyleVersion)
	{
	setHtmlInnerHTML(
	"<style>"
	" .a * { color: green }"
	" .b .c { color: green }"
	"</style>"
	"<div id='x'><span class='c'></span></div>");

	Element* element = document().getElementById("x");
	EXPECT_TRUE(element);

	uint64_t previousStyleVersion = document().styleVersion();
	element->setAttribute(blink::HTMLNames::classAttr, "notfound");
	EXPECT_EQ(previousStyleVersion, document().styleVersion());

	document().view()->updateAllLifecyclePhases();

	previousStyleVersion = document().styleVersion();
	element->setAttribute(blink::HTMLNames::classAttr, "a");
	EXPECT_NE(previousStyleVersion, document().styleVersion());

	document().view()->updateAllLifecyclePhases();

	previousStyleVersion = document().styleVersion();
	element->setAttribute(blink::HTMLNames::classAttr, "a b");
	EXPECT_NE(previousStyleVersion, document().styleVersion());
	}

	} // namespace blink