yoga/tests/CSSLayoutAbsolutePositionTest.cpp

/**
 * Copyright (c) 2014-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

/**
 * @Generated by gentest/gentest.sh with the following input
 *
<div id="absolute_layout_width_height_left_top" style="width: 100px; height: 100px;">
  <div style="width:10px; height: 10px; position: absolute; left: 10px; top: 10px;"></div>
</div>

<div id="absolute_layout_width_height_right_bottom" style="width: 100px; height: 100px;">
  <div style="width:10px; height: 10px; position: absolute; right: 10px; bottom: 10px;"></div>
</div>

<div id="absolute_layout_left_top_right_bottom" style="width: 100px; height: 100px;">
  <div style="position: absolute; left: 10px; top: 10px; right: 10px; bottom: 10px;"></div>
</div>

<div id="absolute_layout_width_height_left_top_right_bottom" style="width: 100px; height: 100px;">
  <div style="width:10px; height: 10px; position: absolute; left: 10px; top: 10px; right: 10px; bottom: 10px;"></div>
</div>

<div id="do_not_clamp_height_of_absolute_node_to_height_of_its_overflow_hidden_parent" style="height: 50px; width: 50px; overflow: hidden; flex-direction: row;">
  <div style="position: absolute; left: 0; top: 0;">
    <div style="width: 100px; height: 100px;"></div>
  </div>
</div>
 *
 */

#include <CSSLayout/CSSLayout.h>
#include <gtest/gtest.h>

TEST(CSSLayoutTest, absolute_layout_width_height_left_top) {
  const CSSNodeRef root = CSSNodeNew();
  CSSNodeStyleSetWidth(root, 100);
  CSSNodeStyleSetHeight(root, 100);

  const CSSNodeRef root_child0 = CSSNodeNew();
  CSSNodeStyleSetPositionType(root_child0, CSSPositionTypeAbsolute);
  CSSNodeStyleSetPosition(root_child0, CSSEdgeLeft, 10);
  CSSNodeStyleSetPosition(root_child0, CSSEdgeTop, 10);
  CSSNodeStyleSetWidth(root_child0, 10);
  CSSNodeStyleSetHeight(root_child0, 10);
  CSSNodeInsertChild(root, root_child0, 0);
  CSSNodeCalculateLayout(root, CSSUndefined, CSSUndefined, CSSDirectionLTR);

  ASSERT_EQ(0, CSSNodeLayoutGetLeft(root));
  ASSERT_EQ(0, CSSNodeLayoutGetTop(root));
  ASSERT_EQ(100, CSSNodeLayoutGetWidth(root));
  ASSERT_EQ(100, CSSNodeLayoutGetHeight(root));

  ASSERT_EQ(10, CSSNodeLayoutGetLeft(root_child0));
  ASSERT_EQ(10, CSSNodeLayoutGetTop(root_child0));
  ASSERT_EQ(10, CSSNodeLayoutGetWidth(root_child0));
  ASSERT_EQ(10, CSSNodeLayoutGetHeight(root_child0));
}

TEST(CSSLayoutTest, absolute_layout_width_height_right_bottom) {
  const CSSNodeRef root = CSSNodeNew();
  CSSNodeStyleSetWidth(root, 100);
  CSSNodeStyleSetHeight(root, 100);

  const CSSNodeRef root_child0 = CSSNodeNew();
  CSSNodeStyleSetPositionType(root_child0, CSSPositionTypeAbsolute);
  CSSNodeStyleSetPosition(root_child0, CSSEdgeRight, 10);
  CSSNodeStyleSetPosition(root_child0, CSSEdgeBottom, 10);
  CSSNodeStyleSetWidth(root_child0, 10);
  CSSNodeStyleSetHeight(root_child0, 10);
  CSSNodeInsertChild(root, root_child0, 0);
  CSSNodeCalculateLayout(root, CSSUndefined, CSSUndefined, CSSDirectionLTR);

  ASSERT_EQ(0, CSSNodeLayoutGetLeft(root));
  ASSERT_EQ(0, CSSNodeLayoutGetTop(root));
  ASSERT_EQ(100, CSSNodeLayoutGetWidth(root));
  ASSERT_EQ(100, CSSNodeLayoutGetHeight(root));

  ASSERT_EQ(80, CSSNodeLayoutGetLeft(root_child0));
  ASSERT_EQ(80, CSSNodeLayoutGetTop(root_child0));
  ASSERT_EQ(10, CSSNodeLayoutGetWidth(root_child0));
  ASSERT_EQ(10, CSSNodeLayoutGetHeight(root_child0));
}

TEST(CSSLayoutTest, absolute_layout_left_top_right_bottom) {
  const CSSNodeRef root = CSSNodeNew();
  CSSNodeStyleSetWidth(root, 100);
  CSSNodeStyleSetHeight(root, 100);

  const CSSNodeRef root_child0 = CSSNodeNew();
  CSSNodeStyleSetPositionType(root_child0, CSSPositionTypeAbsolute);
  CSSNodeStyleSetPosition(root_child0, CSSEdgeLeft, 10);
  CSSNodeStyleSetPosition(root_child0, CSSEdgeTop, 10);
  CSSNodeStyleSetPosition(root_child0, CSSEdgeRight, 10);
  CSSNodeStyleSetPosition(root_child0, CSSEdgeBottom, 10);
  CSSNodeInsertChild(root, root_child0, 0);
  CSSNodeCalculateLayout(root, CSSUndefined, CSSUndefined, CSSDirectionLTR);

  ASSERT_EQ(0, CSSNodeLayoutGetLeft(root));
  ASSERT_EQ(0, CSSNodeLayoutGetTop(root));
  ASSERT_EQ(100, CSSNodeLayoutGetWidth(root));
  ASSERT_EQ(100, CSSNodeLayoutGetHeight(root));

  ASSERT_EQ(10, CSSNodeLayoutGetLeft(root_child0));
  ASSERT_EQ(10, CSSNodeLayoutGetTop(root_child0));
  ASSERT_EQ(80, CSSNodeLayoutGetWidth(root_child0));
  ASSERT_EQ(80, CSSNodeLayoutGetHeight(root_child0));
}

TEST(CSSLayoutTest, absolute_layout_width_height_left_top_right_bottom) {
  const CSSNodeRef root = CSSNodeNew();
  CSSNodeStyleSetWidth(root, 100);
  CSSNodeStyleSetHeight(root, 100);

  const CSSNodeRef root_child0 = CSSNodeNew();
  CSSNodeStyleSetPositionType(root_child0, CSSPositionTypeAbsolute);
  CSSNodeStyleSetPosition(root_child0, CSSEdgeLeft, 10);
  CSSNodeStyleSetPosition(root_child0, CSSEdgeTop, 10);
  CSSNodeStyleSetPosition(root_child0, CSSEdgeRight, 10);
  CSSNodeStyleSetPosition(root_child0, CSSEdgeBottom, 10);
  CSSNodeStyleSetWidth(root_child0, 10);
  CSSNodeStyleSetHeight(root_child0, 10);
  CSSNodeInsertChild(root, root_child0, 0);
  CSSNodeCalculateLayout(root, CSSUndefined, CSSUndefined, CSSDirectionLTR);

  ASSERT_EQ(0, CSSNodeLayoutGetLeft(root));
  ASSERT_EQ(0, CSSNodeLayoutGetTop(root));
  ASSERT_EQ(100, CSSNodeLayoutGetWidth(root));
  ASSERT_EQ(100, CSSNodeLayoutGetHeight(root));

  ASSERT_EQ(10, CSSNodeLayoutGetLeft(root_child0));
  ASSERT_EQ(10, CSSNodeLayoutGetTop(root_child0));
  ASSERT_EQ(10, CSSNodeLayoutGetWidth(root_child0));
  ASSERT_EQ(10, CSSNodeLayoutGetHeight(root_child0));
}

TEST(CSSLayoutTest, do_not_clamp_height_of_absolute_node_to_height_of_its_overflow_hidden_parent) {
  const CSSNodeRef root = CSSNodeNew();
  CSSNodeStyleSetFlexDirection(root, CSSFlexDirectionRow);
  CSSNodeStyleSetOverflow(root, CSSOverflowHidden);
  CSSNodeStyleSetWidth(root, 50);
  CSSNodeStyleSetHeight(root, 50);

  const CSSNodeRef root_child0 = CSSNodeNew();
  CSSNodeStyleSetPositionType(root_child0, CSSPositionTypeAbsolute);
  CSSNodeInsertChild(root, root_child0, 0);

  const CSSNodeRef root_child0_child0 = CSSNodeNew();
  CSSNodeStyleSetWidth(root_child0_child0, 100);
  CSSNodeStyleSetHeight(root_child0_child0, 100);
  CSSNodeInsertChild(root_child0, root_child0_child0, 0);
  CSSNodeCalculateLayout(root, CSSUndefined, CSSUndefined, CSSDirectionLTR);

  ASSERT_EQ(0, CSSNodeLayoutGetLeft(root));
  ASSERT_EQ(0, CSSNodeLayoutGetTop(root));
  ASSERT_EQ(50, CSSNodeLayoutGetWidth(root));
  ASSERT_EQ(50, CSSNodeLayoutGetHeight(root));

  ASSERT_EQ(0, CSSNodeLayoutGetLeft(root_child0));
  ASSERT_EQ(0, CSSNodeLayoutGetTop(root_child0));
  ASSERT_EQ(100, CSSNodeLayoutGetWidth(root_child0));
  ASSERT_EQ(100, CSSNodeLayoutGetHeight(root_child0));

  ASSERT_EQ(0, CSSNodeLayoutGetLeft(root_child0_child0));
  ASSERT_EQ(0, CSSNodeLayoutGetTop(root_child0_child0));
  ASSERT_EQ(100, CSSNodeLayoutGetWidth(root_child0_child0));
  ASSERT_EQ(100, CSSNodeLayoutGetHeight(root_child0_child0));
}