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// 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 <memory>
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/core/css/style_engine.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/frame/local_frame_view.h"
#include "third_party/blink/renderer/core/testing/dummy_page_holder.h"
namespace blink {
TEST(DragUpdateTest, AffectedByDragUpdate) {
// Check that when dragging the div in the document below, you only get a
// single element style recalc.
auto dummy_page_holder = std::make_unique<DummyPageHolder>(IntSize(800, 600));
Document& document = dummy_page_holder->GetDocument();
document.documentElement()->SetInnerHTMLFromString(R"HTML(
<style>div {width:100px;height:100px} div:-webkit-drag {
background-color: green }</style>
<div id='div'>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
)HTML");
document.View()->UpdateAllLifecyclePhases(
DocumentLifecycle::LifecycleUpdateReason::kTest);
unsigned start_count = document.GetStyleEngine().StyleForElementCount();
document.getElementById("div")->SetDragged(true);
document.View()->UpdateAllLifecyclePhases(
DocumentLifecycle::LifecycleUpdateReason::kTest);
unsigned element_count =
document.GetStyleEngine().StyleForElementCount() - start_count;
ASSERT_EQ(1U, element_count);
}
TEST(DragUpdateTest, ChildAffectedByDragUpdate) {
// Check that when dragging the div in the document below, you get a
// single element style recalc.
auto dummy_page_holder = std::make_unique<DummyPageHolder>(IntSize(800, 600));
Document& document = dummy_page_holder->GetDocument();
document.documentElement()->SetInnerHTMLFromString(R"HTML(
<style>div {width:100px;height:100px} div:-webkit-drag .drag {
background-color: green }</style>
<div id='div'>
<span></span>
<span></span>
<span class='drag'></span>
<span></span>
</div>
)HTML");
document.UpdateStyleAndLayout();
unsigned start_count = document.GetStyleEngine().StyleForElementCount();
document.getElementById("div")->SetDragged(true);
document.UpdateStyleAndLayout();
unsigned element_count =
document.GetStyleEngine().StyleForElementCount() - start_count;
ASSERT_EQ(1U, element_count);
}
TEST(DragUpdateTest, SiblingAffectedByDragUpdate) {
// Check that when dragging the div in the document below, you get a
// single element style recalc.
auto dummy_page_holder = std::make_unique<DummyPageHolder>(IntSize(800, 600));
Document& document = dummy_page_holder->GetDocument();
document.documentElement()->SetInnerHTMLFromString(R"HTML(
<style>div {width:100px;height:100px} div:-webkit-drag + .drag {
background-color: green }</style>
<div id='div'>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
<span class='drag'></span>
)HTML");
document.UpdateStyleAndLayout();
unsigned start_count = document.GetStyleEngine().StyleForElementCount();
document.getElementById("div")->SetDragged(true);
document.UpdateStyleAndLayout();
unsigned element_count =
document.GetStyleEngine().StyleForElementCount() - start_count;
ASSERT_EQ(1U, element_count);
}
} // namespace blink
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