src/third_party/WebKit/Source/core/css/DragUpdateTest.cpp

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "config.h"
   6 #include "core/dom/Element.h"
   7 #include "core/frame/FrameView.h"
   8 #include "core/html/HTMLDocument.h"
   9 #include "core/html/HTMLElement.h"
  10 #include "core/testing/DummyPageHolder.h"
  11 #include <gtest/gtest.h>
  12
  13 using namespace WebCore;
  14
  15 namespace {
  16
  17 TEST(DragUpdateTest, AffectedByDragUpdate)
  18 {
  19     // Check that when dragging the div in the document below, you only get a
  20     // single element style recalc.
  21
  22     OwnPtr<DummyPageHolder> dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
  23     HTMLDocument* document = toHTMLDocument(&dummyPageHolder->document());
  24     document->documentElement()->setInnerHTML("<style>div {width:100px;height:100px} div:-webkit-drag { background-color: green }</style>"
  25         "<div>"
  26         "<span></span>"
  27         "<span></span>"
  28         "<span></span>"
  29         "<span></span>"
  30         "</div>", ASSERT_NO_EXCEPTION);
  31
  32     document->view()->updateLayoutAndStyleIfNeededRecursive();
  33     unsigned startCount = document->styleEngine()->resolverAccessCount();
  34
  35     document->documentElement()->renderer()->updateDragState(true);
  36     document->view()->updateLayoutAndStyleIfNeededRecursive();
  37
  38     unsigned accessCount = document->styleEngine()->resolverAccessCount() - startCount;
  39
  40     ASSERT_EQ(1U, accessCount);
  41 }
  42
  43 TEST(DragUpdateTest, ChildrenAffectedByDragUpdate)
  44 {
  45     // Check that when dragging the div in the document below, you get a
  46     // full subtree style recalc.
  47
  48     OwnPtr<DummyPageHolder> dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
  49     HTMLDocument* document = toHTMLDocument(&dummyPageHolder->document());
  50     document->documentElement()->setInnerHTML("<style>div {width:100px;height:100px} div:-webkit-drag span { background-color: green }</style>"
  51         "<div>"
  52         "<span></span>"
  53         "<span></span>"
  54         "<span></span>"
  55         "<span></span>"
  56         "</div>", ASSERT_NO_EXCEPTION);
  57
  58     document->updateLayout();
  59     unsigned startCount = document->styleEngine()->resolverAccessCount();
  60
  61     document->documentElement()->renderer()->updateDragState(true);
  62     document->updateLayout();
  63
  64     unsigned accessCount = document->styleEngine()->resolverAccessCount() - startCount;
  65
  66     ASSERT_EQ(5U, accessCount);
  67 }
  68
  69 } // namespace