third_party/blink/renderer/core/paint/link_highlight_impl_test.cc - chromium/src - Git at Google

 /*
  * Copyright (C) 2012 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:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  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.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "third_party/blink/renderer/core/paint/link_highlight_impl.h"

 #include <memory>

 #include "cc/trees/layer_tree_host.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/blink/public/platform/platform.h"
 #include "third_party/blink/public/platform/web_float_point.h"
 #include "third_party/blink/public/platform/web_input_event.h"
 #include "third_party/blink/public/platform/web_size.h"
 #include "third_party/blink/public/platform/web_url_loader_mock_factory.h"
 #include "third_party/blink/public/web/web_frame.h"
 #include "third_party/blink/public/web/web_local_frame_client.h"
 #include "third_party/blink/public/web/web_view_client.h"
 #include "third_party/blink/renderer/core/dom/node.h"
 #include "third_party/blink/renderer/core/events/web_input_event_conversion.h"
 #include "third_party/blink/renderer/core/exported/web_view_impl.h"
 #include "third_party/blink/renderer/core/frame/frame_test_helpers.h"
 #include "third_party/blink/renderer/core/frame/link_highlights.h"
 #include "third_party/blink/renderer/core/frame/local_frame_view.h"
 #include "third_party/blink/renderer/core/frame/web_local_frame_impl.h"
 #include "third_party/blink/renderer/core/input/event_handler.h"
 #include "third_party/blink/renderer/core/page/page.h"
 #include "third_party/blink/renderer/platform/animation/compositor_animation_timeline.h"
 #include "third_party/blink/renderer/platform/bindings/exception_state.h"
 #include "third_party/blink/renderer/platform/geometry/int_rect.h"
 #include "third_party/blink/renderer/platform/graphics/compositing/paint_artifact_compositor.h"
 #include "third_party/blink/renderer/platform/graphics/graphics_layer.h"
 #include "third_party/blink/renderer/platform/testing/unit_test_helpers.h"
 #include "third_party/blink/renderer/platform/testing/url_test_helpers.h"

 namespace blink {

 class LinkHighlightImplTest : public testing::Test,
                               public testing::WithParamInterface<bool>,
                               private ScopedBlinkGenPropertyTreesForTest {
  public:
   LinkHighlightImplTest() : ScopedBlinkGenPropertyTreesForTest(GetParam()) {}

  protected:
   GestureEventWithHitTestResults GetTargetedEvent(
       WebGestureEvent& touch_event) {
     WebGestureEvent scaled_event = TransformWebGestureEvent(
         web_view_helper_.GetWebView()->MainFrameImpl()->GetFrameView(),
         touch_event);
     return web_view_helper_.GetWebView()
         ->GetPage()
         ->DeprecatedLocalMainFrame()
         ->GetEventHandler()
         .TargetGestureEvent(scaled_event, true);
   }

   void SetUp() override {
     WebURL url = url_test_helpers::RegisterMockedURLLoadFromBase(
         WebString::FromUTF8("http://www.test.com/"), test::CoreTestDataPath(),
         WebString::FromUTF8("test_touch_link_highlight.html"));
     web_view_helper_.InitializeAndLoad(url.GetString().Utf8());
   }

   void TearDown() override {
     Platform::Current()
         ->GetURLLoaderMockFactory()
         ->UnregisterAllURLsAndClearMemoryCache();

     // Ensure we fully clean up while scoped settings are enabled. Without this,
     // garbage collection would occur after ScopedBlinkGenPropertyTreesForTest
     // is out of scope, so the settings would not apply in some destructors.
     web_view_helper_.Reset();
     ThreadState::Current()->CollectAllGarbage();
   }

   size_t ContentLayerCount() {
     // paint_artifact_compositor()->EnableExtraDataForTesting() should be called
     // before using this function.
     DCHECK(paint_artifact_compositor()->GetExtraDataForTesting());
     return paint_artifact_compositor()
         ->GetExtraDataForTesting()
         ->content_layers.size();
   }

   PaintArtifactCompositor* paint_artifact_compositor() {
     auto* local_frame_view = web_view_helper_.LocalMainFrame()->GetFrameView();
     return local_frame_view->GetPaintArtifactCompositorForTesting();
   }

   void UpdateAllLifecyclePhases() {
     web_view_helper_.GetWebView()
         ->MainFrameWidget()
         ->UpdateAllLifecyclePhases();
   }

   frame_test_helpers::WebViewHelper web_view_helper_;
 };

 INSTANTIATE_TEST_CASE_P(All, LinkHighlightImplTest, testing::Bool());

 TEST_P(LinkHighlightImplTest, verifyWebViewImplIntegration) {
   WebViewImpl* web_view_impl = web_view_helper_.GetWebView();
   int page_width = 640;
   int page_height = 480;
   web_view_impl->Resize(WebSize(page_width, page_height));
   UpdateAllLifecyclePhases();

   WebGestureEvent touch_event(WebInputEvent::kGestureShowPress,
                               WebInputEvent::kNoModifiers,
                               WebInputEvent::GetStaticTimeStampForTests(),
                               kWebGestureDeviceTouchscreen);

   // The coordinates below are linked to absolute positions in the referenced
   // .html file.
   touch_event.SetPositionInWidget(WebFloatPoint(20, 20));

   ASSERT_TRUE(web_view_impl->BestTapNode(GetTargetedEvent(touch_event)));

   touch_event.SetPositionInWidget(WebFloatPoint(20, 40));
   EXPECT_FALSE(web_view_impl->BestTapNode(GetTargetedEvent(touch_event)));

   touch_event.SetPositionInWidget(WebFloatPoint(20, 20));
   // Shouldn't crash.
   web_view_impl->EnableTapHighlightAtPoint(GetTargetedEvent(touch_event));

   const auto& highlights =
       web_view_impl->GetPage()->GetLinkHighlights().link_highlights_;
   EXPECT_TRUE(highlights.at(0));
   EXPECT_TRUE(highlights.at(0)->Layer());

   // Find a target inside a scrollable div
   touch_event.SetPositionInWidget(WebFloatPoint(20, 100));
   web_view_impl->EnableTapHighlightAtPoint(GetTargetedEvent(touch_event));
   ASSERT_TRUE(highlights.at(0));

   // Enesure the timeline was added to a host.
   EXPECT_TRUE(!!web_view_impl->GetPage()
                     ->GetLinkHighlights()
                     .timeline_->GetAnimationTimeline()
                     ->animation_host());

   // Don't highlight if no "hand cursor"
   touch_event.SetPositionInWidget(
       WebFloatPoint(20, 220));  // An A-link with cross-hair cursor.
   web_view_impl->EnableTapHighlightAtPoint(GetTargetedEvent(touch_event));
   ASSERT_EQ(0U, highlights.size());

   touch_event.SetPositionInWidget(WebFloatPoint(20, 260));  // A text input box.
   web_view_impl->EnableTapHighlightAtPoint(GetTargetedEvent(touch_event));
   ASSERT_EQ(0U, highlights.size());
 }

 TEST_P(LinkHighlightImplTest, resetDuringNodeRemoval) {
   WebViewImpl* web_view_impl = web_view_helper_.GetWebView();

   int page_width = 640;
   int page_height = 480;
   web_view_impl->Resize(WebSize(page_width, page_height));
   UpdateAllLifecyclePhases();

   WebGestureEvent touch_event(WebInputEvent::kGestureShowPress,
                               WebInputEvent::kNoModifiers,
                               WebInputEvent::GetStaticTimeStampForTests(),
                               kWebGestureDeviceTouchscreen);
   touch_event.SetPositionInWidget(WebFloatPoint(20, 20));

   GestureEventWithHitTestResults targeted_event = GetTargetedEvent(touch_event);
   Node* touch_node = web_view_impl->BestTapNode(targeted_event);
   ASSERT_TRUE(touch_node);

   web_view_impl->EnableTapHighlightAtPoint(targeted_event);
   const auto& highlights = web_view_impl->GetPage()->GetLinkHighlights();
   ASSERT_TRUE(highlights.link_highlights_.at(0));

   GraphicsLayer* highlight_layer =
       highlights.link_highlights_.at(0)->CurrentGraphicsLayerForTesting();
   ASSERT_TRUE(highlight_layer);
   EXPECT_TRUE(highlight_layer->GetLinkHighlights().at(0));

   touch_node->remove(IGNORE_EXCEPTION_FOR_TESTING);
   UpdateAllLifecyclePhases();
   EXPECT_EQ(0U, highlight_layer->GetLinkHighlights().size());
 }

 // A lifetime test: delete LayerTreeView while running LinkHighlights.
 TEST_P(LinkHighlightImplTest, resetLayerTreeView) {
   WebViewImpl* web_view_impl = web_view_helper_.GetWebView();

   int page_width = 640;
   int page_height = 480;
   web_view_impl->Resize(WebSize(page_width, page_height));
   UpdateAllLifecyclePhases();

   WebGestureEvent touch_event(WebInputEvent::kGestureShowPress,
                               WebInputEvent::kNoModifiers,
                               WebInputEvent::GetStaticTimeStampForTests(),
                               kWebGestureDeviceTouchscreen);
   touch_event.SetPositionInWidget(WebFloatPoint(20, 20));

   GestureEventWithHitTestResults targeted_event = GetTargetedEvent(touch_event);
   Node* touch_node = web_view_impl->BestTapNode(targeted_event);
   ASSERT_TRUE(touch_node);

   web_view_impl->EnableTapHighlightAtPoint(targeted_event);
   const auto& highlights =
       web_view_impl->GetPage()->GetLinkHighlights().link_highlights_;
   ASSERT_TRUE(highlights.at(0));

   GraphicsLayer* highlight_layer =
       highlights.at(0)->CurrentGraphicsLayerForTesting();
   ASSERT_TRUE(highlight_layer);
   EXPECT_TRUE(highlight_layer->GetLinkHighlights().at(0));
 }

 TEST_P(LinkHighlightImplTest, HighlightLayerEffectNode) {
   // This is testing the blink->cc layer integration.
   if (!RuntimeEnabledFeatures::BlinkGenPropertyTreesEnabled())
     return;

   int page_width = 640;
   int page_height = 480;
   WebViewImpl* web_view_impl = web_view_helper_.GetWebView();
   web_view_impl->Resize(WebSize(page_width, page_height));

   paint_artifact_compositor()->EnableExtraDataForTesting();
   UpdateAllLifecyclePhases();
   size_t layer_count_before_highlight = ContentLayerCount();

   WebGestureEvent touch_event(WebInputEvent::kGestureShowPress,
                               WebInputEvent::kNoModifiers,
                               WebInputEvent::GetStaticTimeStampForTests(),
                               kWebGestureDeviceTouchscreen);
   touch_event.SetPositionInWidget(WebFloatPoint(20, 20));

   GestureEventWithHitTestResults targeted_event = GetTargetedEvent(touch_event);
   Node* touch_node = web_view_impl->BestTapNode(targeted_event);
   ASSERT_TRUE(touch_node);

   web_view_impl->EnableTapHighlightAtPoint(targeted_event);
   // The highlight should create one additional layer.
   EXPECT_EQ(layer_count_before_highlight + 1, ContentLayerCount());

   const auto& highlights = web_view_impl->GetPage()->GetLinkHighlights();
   auto* highlight = highlights.link_highlights_.at(0).get();
   ASSERT_TRUE(highlight);

   // Check that the link highlight cc layer has a cc effect property tree node.
   auto* layer = highlight->Layer();
   auto effect_tree_index = layer->effect_tree_index();
   auto* property_trees = layer->layer_tree_host()->property_trees();
   EXPECT_EQ(
       effect_tree_index,
       property_trees->element_id_to_effect_node_index[layer->element_id()]);
   // The link highlight cc effect node should correspond to the blink effect
   // node.
   EXPECT_EQ(highlight->effect()->GetCompositorElementId(), layer->element_id());
   EXPECT_TRUE(highlight->effect()->RequiresCompositingForAnimation());

   touch_node->remove(IGNORE_EXCEPTION_FOR_TESTING);
   UpdateAllLifecyclePhases();
   // Removing the highlight layer should drop the cc layer count by one.
   EXPECT_EQ(layer_count_before_highlight, ContentLayerCount());
 }

 }  // namespace blink
	/*
	* Copyright (C) 2012 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:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. 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.
	*
	* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "third_party/blink/renderer/core/paint/link_highlight_impl.h"

	#include <memory>

	#include "cc/trees/layer_tree_host.h"
	#include "testing/gtest/include/gtest/gtest.h"
	#include "third_party/blink/public/platform/platform.h"
	#include "third_party/blink/public/platform/web_float_point.h"
	#include "third_party/blink/public/platform/web_input_event.h"
	#include "third_party/blink/public/platform/web_size.h"
	#include "third_party/blink/public/platform/web_url_loader_mock_factory.h"
	#include "third_party/blink/public/web/web_frame.h"
	#include "third_party/blink/public/web/web_local_frame_client.h"
	#include "third_party/blink/public/web/web_view_client.h"
	#include "third_party/blink/renderer/core/dom/node.h"
	#include "third_party/blink/renderer/core/events/web_input_event_conversion.h"
	#include "third_party/blink/renderer/core/exported/web_view_impl.h"
	#include "third_party/blink/renderer/core/frame/frame_test_helpers.h"
	#include "third_party/blink/renderer/core/frame/link_highlights.h"
	#include "third_party/blink/renderer/core/frame/local_frame_view.h"
	#include "third_party/blink/renderer/core/frame/web_local_frame_impl.h"
	#include "third_party/blink/renderer/core/input/event_handler.h"
	#include "third_party/blink/renderer/core/page/page.h"
	#include "third_party/blink/renderer/platform/animation/compositor_animation_timeline.h"
	#include "third_party/blink/renderer/platform/bindings/exception_state.h"
	#include "third_party/blink/renderer/platform/geometry/int_rect.h"
	#include "third_party/blink/renderer/platform/graphics/compositing/paint_artifact_compositor.h"
	#include "third_party/blink/renderer/platform/graphics/graphics_layer.h"
	#include "third_party/blink/renderer/platform/testing/unit_test_helpers.h"
	#include "third_party/blink/renderer/platform/testing/url_test_helpers.h"

	namespace blink {

	class LinkHighlightImplTest : public testing::Test,
	public testing::WithParamInterface<bool>,
	private ScopedBlinkGenPropertyTreesForTest {
	public:
	LinkHighlightImplTest() : ScopedBlinkGenPropertyTreesForTest(GetParam()) {}

	protected:
	GestureEventWithHitTestResults GetTargetedEvent(
	WebGestureEvent& touch_event) {
	WebGestureEvent scaled_event = TransformWebGestureEvent(
	web_view_helper_.GetWebView()->MainFrameImpl()->GetFrameView(),
	touch_event);
	return web_view_helper_.GetWebView()
	->GetPage()
	->DeprecatedLocalMainFrame()
	->GetEventHandler()
	.TargetGestureEvent(scaled_event, true);
	}

	void SetUp() override {
	WebURL url = url_test_helpers::RegisterMockedURLLoadFromBase(
	WebString::FromUTF8("http://www.test.com/"), test::CoreTestDataPath(),
	WebString::FromUTF8("test_touch_link_highlight.html"));
	web_view_helper_.InitializeAndLoad(url.GetString().Utf8());
	}

	void TearDown() override {
	Platform::Current()
	->GetURLLoaderMockFactory()
	->UnregisterAllURLsAndClearMemoryCache();

	// Ensure we fully clean up while scoped settings are enabled. Without this,
	// garbage collection would occur after ScopedBlinkGenPropertyTreesForTest
	// is out of scope, so the settings would not apply in some destructors.
	web_view_helper_.Reset();
	ThreadState::Current()->CollectAllGarbage();
	}

	size_t ContentLayerCount() {
	// paint_artifact_compositor()->EnableExtraDataForTesting() should be called
	// before using this function.
	DCHECK(paint_artifact_compositor()->GetExtraDataForTesting());
	return paint_artifact_compositor()
	->GetExtraDataForTesting()
	->content_layers.size();
	}

	PaintArtifactCompositor* paint_artifact_compositor() {
	auto* local_frame_view = web_view_helper_.LocalMainFrame()->GetFrameView();
	return local_frame_view->GetPaintArtifactCompositorForTesting();
	}

	void UpdateAllLifecyclePhases() {
	web_view_helper_.GetWebView()
	->MainFrameWidget()
	->UpdateAllLifecyclePhases();
	}

	frame_test_helpers::WebViewHelper web_view_helper_;
	};

	INSTANTIATE_TEST_CASE_P(All, LinkHighlightImplTest, testing::Bool());

	TEST_P(LinkHighlightImplTest, verifyWebViewImplIntegration) {
	WebViewImpl* web_view_impl = web_view_helper_.GetWebView();
	int page_width = 640;
	int page_height = 480;
	web_view_impl->Resize(WebSize(page_width, page_height));
	UpdateAllLifecyclePhases();

	WebGestureEvent touch_event(WebInputEvent::kGestureShowPress,
	WebInputEvent::kNoModifiers,
	WebInputEvent::GetStaticTimeStampForTests(),
	kWebGestureDeviceTouchscreen);

	// The coordinates below are linked to absolute positions in the referenced
	// .html file.
	touch_event.SetPositionInWidget(WebFloatPoint(20, 20));

	ASSERT_TRUE(web_view_impl->BestTapNode(GetTargetedEvent(touch_event)));

	touch_event.SetPositionInWidget(WebFloatPoint(20, 40));
	EXPECT_FALSE(web_view_impl->BestTapNode(GetTargetedEvent(touch_event)));

	touch_event.SetPositionInWidget(WebFloatPoint(20, 20));
	// Shouldn't crash.
	web_view_impl->EnableTapHighlightAtPoint(GetTargetedEvent(touch_event));

	const auto& highlights =
	web_view_impl->GetPage()->GetLinkHighlights().link_highlights_;
	EXPECT_TRUE(highlights.at(0));
	EXPECT_TRUE(highlights.at(0)->Layer());

	// Find a target inside a scrollable div
	touch_event.SetPositionInWidget(WebFloatPoint(20, 100));
	web_view_impl->EnableTapHighlightAtPoint(GetTargetedEvent(touch_event));
	ASSERT_TRUE(highlights.at(0));

	// Enesure the timeline was added to a host.
	EXPECT_TRUE(!!web_view_impl->GetPage()
	->GetLinkHighlights()
	.timeline_->GetAnimationTimeline()
	->animation_host());

	// Don't highlight if no "hand cursor"
	touch_event.SetPositionInWidget(
	WebFloatPoint(20, 220)); // An A-link with cross-hair cursor.
	web_view_impl->EnableTapHighlightAtPoint(GetTargetedEvent(touch_event));
	ASSERT_EQ(0U, highlights.size());

	touch_event.SetPositionInWidget(WebFloatPoint(20, 260)); // A text input box.
	web_view_impl->EnableTapHighlightAtPoint(GetTargetedEvent(touch_event));
	ASSERT_EQ(0U, highlights.size());
	}

	TEST_P(LinkHighlightImplTest, resetDuringNodeRemoval) {
	WebViewImpl* web_view_impl = web_view_helper_.GetWebView();

	int page_width = 640;
	int page_height = 480;
	web_view_impl->Resize(WebSize(page_width, page_height));
	UpdateAllLifecyclePhases();

	WebGestureEvent touch_event(WebInputEvent::kGestureShowPress,
	WebInputEvent::kNoModifiers,
	WebInputEvent::GetStaticTimeStampForTests(),
	kWebGestureDeviceTouchscreen);
	touch_event.SetPositionInWidget(WebFloatPoint(20, 20));

	GestureEventWithHitTestResults targeted_event = GetTargetedEvent(touch_event);
	Node* touch_node = web_view_impl->BestTapNode(targeted_event);
	ASSERT_TRUE(touch_node);

	web_view_impl->EnableTapHighlightAtPoint(targeted_event);
	const auto& highlights = web_view_impl->GetPage()->GetLinkHighlights();
	ASSERT_TRUE(highlights.link_highlights_.at(0));

	GraphicsLayer* highlight_layer =
	highlights.link_highlights_.at(0)->CurrentGraphicsLayerForTesting();
	ASSERT_TRUE(highlight_layer);
	EXPECT_TRUE(highlight_layer->GetLinkHighlights().at(0));

	touch_node->remove(IGNORE_EXCEPTION_FOR_TESTING);
	UpdateAllLifecyclePhases();
	EXPECT_EQ(0U, highlight_layer->GetLinkHighlights().size());
	}

	// A lifetime test: delete LayerTreeView while running LinkHighlights.
	TEST_P(LinkHighlightImplTest, resetLayerTreeView) {
	WebViewImpl* web_view_impl = web_view_helper_.GetWebView();

	int page_width = 640;
	int page_height = 480;
	web_view_impl->Resize(WebSize(page_width, page_height));
	UpdateAllLifecyclePhases();

	WebGestureEvent touch_event(WebInputEvent::kGestureShowPress,
	WebInputEvent::kNoModifiers,
	WebInputEvent::GetStaticTimeStampForTests(),
	kWebGestureDeviceTouchscreen);
	touch_event.SetPositionInWidget(WebFloatPoint(20, 20));

	GestureEventWithHitTestResults targeted_event = GetTargetedEvent(touch_event);
	Node* touch_node = web_view_impl->BestTapNode(targeted_event);
	ASSERT_TRUE(touch_node);

	web_view_impl->EnableTapHighlightAtPoint(targeted_event);
	const auto& highlights =
	web_view_impl->GetPage()->GetLinkHighlights().link_highlights_;
	ASSERT_TRUE(highlights.at(0));

	GraphicsLayer* highlight_layer =
	highlights.at(0)->CurrentGraphicsLayerForTesting();
	ASSERT_TRUE(highlight_layer);
	EXPECT_TRUE(highlight_layer->GetLinkHighlights().at(0));
	}

	TEST_P(LinkHighlightImplTest, HighlightLayerEffectNode) {
	// This is testing the blink->cc layer integration.
	if (!RuntimeEnabledFeatures::BlinkGenPropertyTreesEnabled())
	return;

	int page_width = 640;
	int page_height = 480;
	WebViewImpl* web_view_impl = web_view_helper_.GetWebView();
	web_view_impl->Resize(WebSize(page_width, page_height));

	paint_artifact_compositor()->EnableExtraDataForTesting();
	UpdateAllLifecyclePhases();
	size_t layer_count_before_highlight = ContentLayerCount();

	WebGestureEvent touch_event(WebInputEvent::kGestureShowPress,
	WebInputEvent::kNoModifiers,
	WebInputEvent::GetStaticTimeStampForTests(),
	kWebGestureDeviceTouchscreen);
	touch_event.SetPositionInWidget(WebFloatPoint(20, 20));

	GestureEventWithHitTestResults targeted_event = GetTargetedEvent(touch_event);
	Node* touch_node = web_view_impl->BestTapNode(targeted_event);
	ASSERT_TRUE(touch_node);

	web_view_impl->EnableTapHighlightAtPoint(targeted_event);
	// The highlight should create one additional layer.
	EXPECT_EQ(layer_count_before_highlight + 1, ContentLayerCount());

	const auto& highlights = web_view_impl->GetPage()->GetLinkHighlights();
	auto* highlight = highlights.link_highlights_.at(0).get();
	ASSERT_TRUE(highlight);

	// Check that the link highlight cc layer has a cc effect property tree node.
	auto* layer = highlight->Layer();
	auto effect_tree_index = layer->effect_tree_index();
	auto* property_trees = layer->layer_tree_host()->property_trees();
	EXPECT_EQ(
	effect_tree_index,
	property_trees->element_id_to_effect_node_index[layer->element_id()]);
	// The link highlight cc effect node should correspond to the blink effect
	// node.
	EXPECT_EQ(highlight->effect()->GetCompositorElementId(), layer->element_id());
	EXPECT_TRUE(highlight->effect()->RequiresCompositingForAnimation());

	touch_node->remove(IGNORE_EXCEPTION_FOR_TESTING);
	UpdateAllLifecyclePhases();
	// Removing the highlight layer should drop the cc layer count by one.
	EXPECT_EQ(layer_count_before_highlight, ContentLayerCount());
	}

	} // namespace blink