First version of new merge algorithm (not enabled yet)

Source/core/paint/DrawingRecorderTest.cpp

Index: Source/core/paint/DrawingRecorderTest.cpp
diff --git a/Source/core/paint/DrawingRecorderTest.cpp b/Source/core/paint/DrawingRecorderTest.cpp
index 5ea1bbb250c3e4263c9e8e5a69ccf1b3c4a752c7..96c371e87fb5ccb2e62d0a116b9746b826629b3d 100644
--- a/Source/core/paint/DrawingRecorderTest.cpp
+++ b/Source/core/paint/DrawingRecorderTest.cpp
@@ -14,7 +14,6 @@
 #include <gtest/gtest.h>
 
 namespace blink {
-namespace {
 
 class DrawingRecorderTest : public RenderingTest {
 public:
@@ -23,6 +22,7 @@ public:
 protected:
     RenderView* renderView() { return m_renderView; }
     DisplayItemList& rootDisplayItemList() { return *renderView()->layer()->graphicsLayerBacking()->displayItemList(); }
+    const Vector<OwnPtr<DisplayItem>>& newPaintListBeforeUpdate() { return rootDisplayItemList().m_newPaints; }
 
 private:
     virtual void SetUp() override
@@ -36,6 +36,12 @@ private:
         ASSERT_TRUE(m_renderView);
     }
 
+    virtual void TearDown() override
+    {
+        RuntimeEnabledFeatures::setSlimmingPaintEnabled(false);
+        RuntimeEnabledFeatures::setSlimmingPaintDisplayItemCacheEnabled(false);
+    }
+
     RenderView* m_renderView;
 };
 
@@ -54,7 +60,7 @@ void drawRect(GraphicsContext* context, RenderView* renderer, PaintPhase phase,
 }
 
 
-TEST_F(DrawingRecorderTest, DrawingRecorderTest_Nothing)
+TEST_F(DrawingRecorderTest, Nothing)
 {
     GraphicsContext context(nullptr, &rootDisplayItemList());
     FloatRect bound = renderView()->viewRect();
@@ -62,10 +68,10 @@ TEST_F(DrawingRecorderTest, DrawingRecorderTest_Nothing)
 
     drawNothing(&context, renderView(), PaintPhaseForeground, bound);
     rootDisplayItemList().endNewPaints();
-    EXPECT_EQ((size_t)1, rootDisplayItemList().paintList().size());
+    EXPECT_EQ((size_t)0, rootDisplayItemList().paintList().size());
 }
 
-TEST_F(DrawingRecorderTest, DrawingRecorderTest_Rect)
+TEST_F(DrawingRecorderTest, Rect)
 {
     GraphicsContext context(nullptr, &rootDisplayItemList());
     FloatRect bound = renderView()->viewRect();
@@ -75,22 +81,26 @@ TEST_F(DrawingRecorderTest, DrawingRecorderTest_Rect)
     EXPECT_TRUE(rootDisplayItemList().paintList()[0]->isDrawing());
 }
 
-TEST_F(DrawingRecorderTest, DrawingRecorderTest_Cached)
+TEST_F(DrawingRecorderTest, Cached)
 {
+    RuntimeEnabledFeatures::setSlimmingPaintDisplayItemCacheEnabled(true);
+
     GraphicsContext context(nullptr, &rootDisplayItemList());
     FloatRect bound = renderView()->viewRect();
     drawNothing(&context, renderView(), PaintPhaseBlockBackground, bound);
     drawRect(&context, renderView(), PaintPhaseForeground, bound);
     rootDisplayItemList().endNewPaints();
-    EXPECT_EQ((size_t)2, rootDisplayItemList().paintList().size());
-    EXPECT_TRUE(rootDisplayItemList().paintList()[1]->isDrawing());
+    EXPECT_EQ((size_t)1, rootDisplayItemList().paintList().size());
+    EXPECT_TRUE(rootDisplayItemList().paintList()[0]->isDrawing());
 
     drawNothing(&context, renderView(), PaintPhaseBlockBackground, bound);
     drawRect(&context, renderView(), PaintPhaseForeground, bound);
+    EXPECT_EQ((size_t)2, newPaintListBeforeUpdate().size());
+    EXPECT_TRUE(newPaintListBeforeUpdate()[0]->isCached());
+    EXPECT_TRUE(newPaintListBeforeUpdate()[1]->isCached());
     rootDisplayItemList().endNewPaints();
-    EXPECT_EQ((size_t)2, rootDisplayItemList().paintList().size());
-    EXPECT_TRUE(rootDisplayItemList().paintList()[1]->isDrawing());
+    EXPECT_EQ((size_t)1, rootDisplayItemList().paintList().size());
+    EXPECT_TRUE(rootDisplayItemList().paintList()[0]->isDrawing());
 }
 
 }
-}