Add a new document lifecycle; CompositingInputsClean

third_party/WebKit/Source/core/layout/compositing/PaintLayerCompositorTest.cpp

+// 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/layout/compositing/PaintLayerCompositor.h"
+
+#include "core/animation/Animation.h"
+#include "core/animation/ElementAnimation.h"
+#include "core/layout/LayoutTestHelper.h"
+#include "core/paint/PaintLayer.h"
+
+namespace blink {
+
+namespace {
+class PaintLayerCompositorTest : public RenderingTest {
+ public:
+  PaintLayerCompositorTest()
+      : RenderingTest(SingleChildLocalFrameClient::Create()) {}
+
+ private:
+  void SetUp() {
+    RenderingTest::SetUp();
+    EnableCompositing();
+  }
+};
+}
+
+TEST_F(PaintLayerCompositorTest, AdvancingToCompositingInputsClean) {
+  SetBodyInnerHTML("<div id='box' style='position: relative'></div>");
+
+  PaintLayer* box_layer =
+      ToLayoutBox(GetLayoutObjectByElementId("box"))->Layer();
+  ASSERT_TRUE(box_layer);
+  EXPECT_FALSE(box_layer->NeedsCompositingInputsUpdate());
+
+  box_layer->SetNeedsCompositingInputsUpdate();
+
+  GetDocument().View()->UpdateLifecycleToCompositingInputsClean();
+  EXPECT_EQ(DocumentLifecycle::kCompositingInputsClean,
+            GetDocument().Lifecycle().GetState());
+  EXPECT_FALSE(box_layer->NeedsCompositingInputsUpdate());
+}
+
+TEST_F(PaintLayerCompositorTest,
+       CompositingInputsCleanDoesNotTriggerAnimations) {
+  SetBodyInnerHTML(
+      "<style>@keyframes fadeOut { from { opacity: 1; } to { opacity: 0; } }"
+      ".animate { animation: fadeOut 2s; }</style>"
+      "<div id='box'></div>"
+      "<div id='otherBox'></div>");
+
+  Element* box = GetDocument().GetElementById("box");
+  Element* otherBox = GetDocument().GetElementById("otherBox");
+  ASSERT_TRUE(box);
+  ASSERT_TRUE(otherBox);
+
+  box->setAttribute("class", "animate", ASSERT_NO_EXCEPTION);
+
+  // Update the lifecycle to CompositingInputsClean. This should not start the
+  // animation lifecycle.
+  GetDocument().View()->UpdateLifecycleToCompositingInputsClean();
+  EXPECT_EQ(DocumentLifecycle::kCompositingInputsClean,
+            GetDocument().Lifecycle().GetState());
+
+  otherBox->setAttribute("class", "animate", ASSERT_NO_EXCEPTION);
+
+  // Now run the rest of the lifecycle. Because both 'box' and 'otherBox' were
+  // given animations separated only by a lifecycle update to
+  // CompositingInputsClean, they should both be started in the same lifecycle
+  // and as such grouped together.
+  GetDocument().View()->UpdateAllLifecyclePhases();
+  EXPECT_EQ(DocumentLifecycle::kPaintClean,
+            GetDocument().Lifecycle().GetState());
+
+  HeapVector<Member<Animation>> boxAnimations =
+      ElementAnimation::getAnimations(*box);
+  HeapVector<Member<Animation>> otherBoxAnimations =
+      ElementAnimation::getAnimations(*box);
+
+  EXPECT_EQ(1ul, boxAnimations.size());
+  EXPECT_EQ(1ul, otherBoxAnimations.size());
+  EXPECT_EQ(boxAnimations.front()->CompositorGroup(),
+            otherBoxAnimations.front()->CompositorGroup());
+}
+}