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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 "third_party/blink/renderer/core/dom/element_traversal.h"
#include "third_party/blink/renderer/core/layout/layout_block.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/core/layout/layout_block_flow.h"
#include "third_party/blink/renderer/core/testing/core_unit_test_helper.h"
#include "third_party/blink/renderer/platform/testing/runtime_enabled_features_test_helpers.h"
namespace blink {
class LayoutBlockTest : public RenderingTest {};
TEST_F(LayoutBlockTest, LayoutNameCalledWithNullStyle) {
scoped_refptr<ComputedStyle> style = ComputedStyle::Create();
LayoutObject* obj = LayoutBlockFlow::CreateAnonymous(&GetDocument(), style);
obj->SetStyleInternal(nullptr);
EXPECT_FALSE(obj->Style());
EXPECT_STREQ("LayoutBlockFlow (anonymous)",
obj->DecoratedName().Ascii().data());
obj->Destroy();
}
TEST_F(LayoutBlockTest, WidthAvailableToChildrenChanged) {
ScopedOverlayScrollbarsForTest overlay_scrollbars(false);
SetBodyInnerHTML(R"HTML(
<!DOCTYPE html>
<div id='list' style='overflow-y:auto; width:150px; height:100px'>
<div style='height:20px'>Item</div>
<div style='height:20px'>Item</div>
<div style='height:20px'>Item</div>
<div style='height:20px'>Item</div>
<div style='height:20px'>Item</div>
<div style='height:20px'>Item</div>
</div>
)HTML");
Element* list_element = GetDocument().getElementById("list");
ASSERT_TRUE(list_element);
LayoutBox* list_box = ToLayoutBox(list_element->GetLayoutObject());
Element* item_element = ElementTraversal::FirstChild(*list_element);
ASSERT_TRUE(item_element);
ASSERT_GT(list_box->VerticalScrollbarWidth(), 0);
ASSERT_EQ(item_element->OffsetWidth(),
150 - list_box->VerticalScrollbarWidth());
DummyExceptionStateForTesting exception_state;
list_element->style()->setCSSText(&GetDocument(), "width:150px;height:100px;",
exception_state);
ASSERT_FALSE(exception_state.HadException());
GetDocument().View()->UpdateAllLifecyclePhases();
ASSERT_EQ(list_box->VerticalScrollbarWidth(), 0);
ASSERT_EQ(item_element->OffsetWidth(), 150);
}
TEST_F(LayoutBlockTest, OverflowWithTransformAndPerspective) {
SetBodyInnerHTML(R"HTML(
<div id='target' style='width: 100px; height: 100px; overflow: scroll;
perspective: 200px;'>
<div style='transform: rotateY(-45deg); width: 140px; height: 100px'>
</div>
</div>
)HTML");
LayoutBox* scroller =
ToLayoutBox(GetDocument().getElementById("target")->GetLayoutObject());
EXPECT_EQ(119.5, scroller->LayoutOverflowRect().Width().ToFloat());
}
} // namespace blink
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