Preparation for enabling slimming paint synchronized painting

third_party/WebKit/Source/core/paint/LayoutObjectDrawingRecorderTest.cpp

 // Copyright 2014 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 "config.h"
 #include "core/paint/LayoutObjectDrawingRecorder.h"
 
 #include "core/layout/LayoutTestHelper.h"
 #include "core/layout/LayoutView.h"
 #include "core/paint/PaintControllerPaintTest.h"
 #include "core/paint/PaintLayer.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/graphics/paint/DrawingDisplayItem.h"
 #include "platform/graphics/paint/PaintController.h"
 #include <gtest/gtest.h>
 
 namespace blink {
 
 using LayoutObjectDrawingRecorderTest = PaintControllerPaintTest;
-using LayoutObjectDrawingRecorderTestForSlimmingPaintV2 = PaintControllerPaintTestForSlimmingPaintV2;

[Xianzhu, 2015/10/28 18:10:23]

This was not used. We also don't need to test for v2 because the tests cover
common code.

 
 namespace {
 
 void drawNothing(GraphicsContext& context, const LayoutView& layoutView, PaintPhase phase, const LayoutRect& bound)
 {
     if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(context, layoutView, phase, LayoutPoint()))
         return;
 
     LayoutObjectDrawingRecorder drawingRecorder(context, layoutView, phase, bound, LayoutPoint());
 }
 
 void drawRect(GraphicsContext& context, LayoutView& layoutView, PaintPhase phase, const LayoutRect& bound)
 {
     if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(context, layoutView, phase, LayoutPoint()))
         return;
     LayoutObjectDrawingRecorder drawingRecorder(context, layoutView, phase, bound, LayoutPoint());
     IntRect rect(0, 0, 10, 10);
     context.drawRect(rect);
 }
 
 TEST_F(LayoutObjectDrawingRecorderTest, Nothing)
 {
+    rootPaintController().invalidateAll();
     GraphicsContext context(rootPaintController());
     LayoutRect bound = layoutView().viewRect();
-    EXPECT_EQ((size_t)0, rootPaintController().displayItemList().size());
-
     drawNothing(context, layoutView(), PaintPhaseForeground, bound);
     rootPaintController().commitNewDisplayItems();
     EXPECT_DISPLAY_LIST(rootPaintController().displayItemList(), 1,
         TestDisplayItem(layoutView(), DisplayItem::paintPhaseToDrawingType(PaintPhaseForeground)));
     EXPECT_FALSE(static_cast<const DrawingDisplayItem&>(rootPaintController().displayItemList()[0]).picture());
 }
 
 TEST_F(LayoutObjectDrawingRecorderTest, Rect)
 {
+    rootPaintController().invalidateAll();
     GraphicsContext context(rootPaintController());
     LayoutRect bound = layoutView().viewRect();
     drawRect(context, layoutView(), PaintPhaseForeground, bound);
     rootPaintController().commitNewDisplayItems();
     EXPECT_DISPLAY_LIST(rootPaintController().displayItemList(), 1,
         TestDisplayItem(layoutView(), DisplayItem::paintPhaseToDrawingType(PaintPhaseForeground)));
 }
 
 TEST_F(LayoutObjectDrawingRecorderTest, Cached)
 {
+    rootPaintController().invalidateAll();
     GraphicsContext context(rootPaintController());
     LayoutRect bound = layoutView().viewRect();
     drawNothing(context, layoutView(), PaintPhaseBlockBackground, bound);
     drawRect(context, layoutView(), PaintPhaseForeground, bound);
     rootPaintController().commitNewDisplayItems();
 
     EXPECT_DISPLAY_LIST(rootPaintController().displayItemList(), 2,
         TestDisplayItem(layoutView(), DisplayItem::paintPhaseToDrawingType(PaintPhaseBlockBackground)),
         TestDisplayItem(layoutView(), DisplayItem::paintPhaseToDrawingType(PaintPhaseForeground)));
 
@@ skipping 82 matching lines @@
 
     // Ensure the new paint offset can be used.
     EXPECT_TRUE(LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(context, layoutView(), PaintPhaseForeground, newPaintOffset));
     rootPaintController().commitNewDisplayItems();
     EXPECT_DISPLAY_LIST(rootPaintController().displayItemList(), 1,
         TestDisplayItem(layoutView(), DisplayItem::paintPhaseToDrawingType(PaintPhaseForeground)));
 }
 
 } // namespace
 } // namespace blink