// Copyright 2016 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 "core/layout/ng/ng_block_node.h"

#include "core/layout/LayoutTestHelper.h"
#include "core/layout/ng/ng_box_fragment.h"
#include "core/layout/ng/ng_min_max_content_size.h"
#include "core/style/ComputedStyle.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace blink {
namespace {
class NGBlockNodeForTest : public RenderingTest {
 public:
  NGBlockNodeForTest() { RuntimeEnabledFeatures::setLayoutNGEnabled(true); }
  ~NGBlockNodeForTest() { RuntimeEnabledFeatures::setLayoutNGEnabled(false); };
};

TEST_F(NGBlockNodeForTest, ChildInlineAndBlock) {
  SetBodyInnerHTML(R"HTML(
    <!DOCTYPE html>
    <div id=container>Hello!<div></div></div>
  )HTML");
  NGBlockNode container(ToLayoutBox(GetLayoutObjectByElementId("container")));
  NGLayoutInputNode child1 = container.FirstChild();
  EXPECT_TRUE(child1 && child1.IsBlock());
  NGLayoutInputNode child2 = child1.NextSibling();
  EXPECT_TRUE(child2 && child2.IsBlock());
  NGLayoutInputNode child3 = child2.NextSibling();
  EXPECT_EQ(child3, nullptr);
}

TEST_F(NGBlockNodeForTest, ChildBlockAndInline) {
  SetBodyInnerHTML(R"HTML(
    <!DOCTYPE html>
    <div id=container><div></div>Hello!</div>
  )HTML");
  NGBlockNode container(ToLayoutBox(GetLayoutObjectByElementId("container")));
  NGLayoutInputNode child1 = container.FirstChild();
  EXPECT_TRUE(child1 && child1.IsBlock());
  NGLayoutInputNode child2 = child1.NextSibling();
  EXPECT_TRUE(child2 && child2.IsBlock());
  NGLayoutInputNode child3 = child2.NextSibling();
  EXPECT_EQ(child3, nullptr);
}

TEST_F(NGBlockNodeForTest, ChildFloatBeforeBlock) {
  SetBodyInnerHTML(R"HTML(
    <!DOCTYPE html>
    <style>
      float { float: left; }
    </style>
    <div id=container><float></float><div></div></div>
  )HTML");
  NGBlockNode container(ToLayoutBox(GetLayoutObjectByElementId("container")));
  NGLayoutInputNode child1 = container.FirstChild();
  EXPECT_TRUE(child1 && child1.IsBlock());
  NGLayoutInputNode child2 = child1.NextSibling();
  EXPECT_TRUE(child2 && child2.IsBlock());
  NGLayoutInputNode child3 = child2.NextSibling();
  EXPECT_EQ(child3, nullptr);
}

TEST_F(NGBlockNodeForTest, ChildFloatBeforeInline) {
  SetBodyInnerHTML(R"HTML(
    <!DOCTYPE html>
    <style>
      float { float: left; }
    </style>
    <div id=container><float></float>Hello!</div>
  )HTML");
  NGBlockNode container(ToLayoutBox(GetLayoutObjectByElementId("container")));
  NGLayoutInputNode child1 = container.FirstChild();
  EXPECT_TRUE(child1 && child1.IsBlock());
  NGLayoutInputNode child2 = child1.NextSibling();
  EXPECT_TRUE(child2 && child2.IsBlock());
}

TEST_F(NGBlockNodeForTest, ChildFloatAfterInline) {
  SetBodyInnerHTML(R"HTML(
    <!DOCTYPE html>
    <style>
      float { float: left; }
    </style>
    <div id=container>Hello<float></float></div>
  )HTML");
  NGBlockNode container(ToLayoutBox(GetLayoutObjectByElementId("container")));
  NGLayoutInputNode child1 = container.FirstChild();
  EXPECT_TRUE(child1 && child1.IsInline());
  NGLayoutInputNode child2 = child1.NextSibling();
  EXPECT_EQ(child2, nullptr);
}

TEST_F(NGBlockNodeForTest, ChildFloatOnly) {
  SetBodyInnerHTML(R"HTML(
    <!DOCTYPE html>
    <style>
      float { float: left; }
    </style>
    <div id=container><float></float></div>
  )HTML");
  NGBlockNode container(ToLayoutBox(GetLayoutObjectByElementId("container")));
  NGLayoutInputNode child1 = container.FirstChild();
  EXPECT_TRUE(child1 && child1.IsBlock());
  NGLayoutInputNode child2 = child1.NextSibling();
  EXPECT_EQ(child2, nullptr);
}

TEST_F(NGBlockNodeForTest, ChildFloatWithSpaces) {
  SetBodyInnerHTML(R"HTML(
    <!DOCTYPE html>
    <style>
      float { float: left; }
    </style>
    <div id=container>
      <float></float>
    </div>
  )HTML");
  NGBlockNode container(ToLayoutBox(GetLayoutObjectByElementId("container")));
  NGLayoutInputNode child1 = container.FirstChild();
  EXPECT_TRUE(child1 && child1.IsBlock());
  NGLayoutInputNode child2 = child1.NextSibling();
  EXPECT_EQ(child2, nullptr);
}

TEST_F(NGBlockNodeForTest, ChildOofBeforeInline) {
  SetBodyInnerHTML(R"HTML(
    <!DOCTYPE html>
    <style>
      oof { position: absolute; }
    </style>
    <div id=container><oof></oof>Hello!</div>
  )HTML");
  NGBlockNode container(ToLayoutBox(GetLayoutObjectByElementId("container")));
  NGLayoutInputNode child1 = container.FirstChild();
  EXPECT_TRUE(child1 && child1.IsBlock());
  NGLayoutInputNode child2 = child1.NextSibling();
  EXPECT_TRUE(child2 && child2.IsBlock());
}

TEST_F(NGBlockNodeForTest, ChildOofAfterInline) {
  SetBodyInnerHTML(R"HTML(
    <!DOCTYPE html>
    <style>
      oof { position: absolute; }
    </style>
    <div id=container>Hello!<oof></oof></div>
  )HTML");
  NGBlockNode container(ToLayoutBox(GetLayoutObjectByElementId("container")));
  NGLayoutInputNode child1 = container.FirstChild();
  EXPECT_TRUE(child1 && child1.IsInline());
  NGLayoutInputNode child2 = child1.NextSibling();
  EXPECT_EQ(child2, nullptr);
}

TEST_F(NGBlockNodeForTest, MinAndMaxContent) {
  SetBodyInnerHTML(R"HTML(
    <div id="box" >
      <div id="first_child" style="width:30px">
      </div>
    </div>
  )HTML");
  const int kWidth = 30;

  NGBlockNode box(ToLayoutBox(GetLayoutObjectByElementId("box")));
  MinMaxContentSize sizes = box.ComputeMinMaxContentSize();
  EXPECT_EQ(LayoutUnit(kWidth), sizes.min_content);
  EXPECT_EQ(LayoutUnit(kWidth), sizes.max_content);
}
}  // namespace
}  // namespace blink