Optimize collapsed border calculation (step 1)

third_party/WebKit/Source/core/layout/LayoutTableCellTest.cpp

 /*
  * Copyright (C) 2011 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
@@ skipping 67 matching lines @@
   }
   bool HasEndBorderAdjoiningTable(const LayoutTableCell* cell) {
     return cell->HasEndBorderAdjoiningTable();
   }
 
   LayoutTableCell* GetCellByElementId(const char* id) {
     return ToLayoutTableCell(GetLayoutObjectByElementId(id));
   }
 };
 
+TEST_F(LayoutTableCellTest, AbsoluteColumnIndex) {
+  auto* cell = LayoutTableCell::CreateAnonymous(&GetDocument());
+  EXPECT_FALSE(cell->HasSetAbsoluteColumnIndex());
+  cell->SetAbsoluteColumnIndex(kMaxColumnIndex);
+  EXPECT_TRUE(cell->HasSetAbsoluteColumnIndex());
+  EXPECT_NE(kUnsetColumnIndex, cell->AbsoluteColumnIndex());
+  EXPECT_EQ(kMaxColumnIndex, cell->AbsoluteColumnIndex());
+}
+
 TEST_F(LayoutTableCellTest, ResetColspanIfTooBig) {
   SetBodyInnerHTML("<table><td id='cell' colspan='14000'></td></table>");
   ASSERT_EQ(GetCellByElementId("cell")->ColSpan(), 8190U);
 }
 
 TEST_F(LayoutTableCellTest, DoNotResetColspanJustBelowBoundary) {
   SetBodyInnerHTML("<table><td id='cell' colspan='8190'></td></table>");
   ASSERT_EQ(GetCellByElementId("cell")->ColSpan(), 8190U);
 }
 
@@ skipping 138 matching lines @@
   EXPECT_TRUE(HasStartBorderAdjoiningTable(cell23));
   EXPECT_FALSE(HasEndBorderAdjoiningTable(cell23));
 
   EXPECT_FALSE(HasStartBorderAdjoiningTable(cell31));
   EXPECT_FALSE(HasEndBorderAdjoiningTable(cell31));
   EXPECT_FALSE(HasStartBorderAdjoiningTable(cell32));
   EXPECT_FALSE(HasEndBorderAdjoiningTable(cell32));
 }
 
 }  // namespace blink