automated-tests/src/dali-toolkit-third-party/yoga/YGLayoutDiffingTest.cpp

   1 /**
   2  * Copyright (c) 2014-present, Facebook, Inc.
   3  *
   4  * This source code is licensed under the MIT license found in the
   5  * LICENSE file in the root directory of this source tree.
   6  */
   7
   8 #include <gtest/gtest.h>
   9 #include <yoga/YGNode.h>
  10 #include <yoga/Yoga.h>
  11
  12 TEST(YogaTest, assert_layout_trees_are_same) {
  13   YGConfig* config = YGConfigNew();
  14   YGConfigSetUseLegacyStretchBehaviour(config, true);
  15   const YGNodeRef root1 = YGNodeNewWithConfig(config);
  16   YGNodeStyleSetWidth(root1, 500);
  17   YGNodeStyleSetHeight(root1, 500);
  18
  19   const YGNodeRef root1_child0 = YGNodeNewWithConfig(config);
  20   YGNodeStyleSetAlignItems(root1_child0, YGAlignFlexStart);
  21   YGNodeInsertChild(root1, root1_child0, 0);
  22
  23   const YGNodeRef root1_child0_child0 = YGNodeNewWithConfig(config);
  24   YGNodeStyleSetFlexGrow(root1_child0_child0, 1);
  25   YGNodeStyleSetFlexShrink(root1_child0_child0, 1);
  26   YGNodeInsertChild(root1_child0, root1_child0_child0, 0);
  27
  28   const YGNodeRef root1_child0_child0_child0 = YGNodeNewWithConfig(config);
  29   YGNodeStyleSetFlexGrow(root1_child0_child0_child0, 1);
  30   YGNodeStyleSetFlexShrink(root1_child0_child0_child0, 1);
  31   YGNodeInsertChild(root1_child0_child0, root1_child0_child0_child0, 0);
  32
  33   const int32_t cal1_configInstanceCount = YGConfigGetInstanceCount();
  34   const int32_t cal1_nodeInstanceCount = YGNodeGetInstanceCount();
  35
  36   YGNodeCalculateLayout(root1, YGUndefined, YGUndefined, YGDirectionLTR);
  37
  38   ASSERT_EQ(YGConfigGetInstanceCount(), cal1_configInstanceCount);
  39   ASSERT_EQ(YGNodeGetInstanceCount(), cal1_nodeInstanceCount);
  40
  41   const YGNodeRef root2 = YGNodeNewWithConfig(config);
  42   YGNodeStyleSetWidth(root2, 500);
  43   YGNodeStyleSetHeight(root2, 500);
  44
  45   const YGNodeRef root2_child0 = YGNodeNewWithConfig(config);
  46   YGNodeStyleSetAlignItems(root2_child0, YGAlignFlexStart);
  47   YGNodeInsertChild(root2, root2_child0, 0);
  48
  49   const YGNodeRef root2_child0_child0 = YGNodeNewWithConfig(config);
  50   YGNodeStyleSetFlexGrow(root2_child0_child0, 1);
  51   YGNodeStyleSetFlexShrink(root2_child0_child0, 1);
  52   YGNodeInsertChild(root2_child0, root2_child0_child0, 0);
  53
  54   const YGNodeRef root2_child0_child0_child0 = YGNodeNewWithConfig(config);
  55   YGNodeStyleSetFlexGrow(root2_child0_child0_child0, 1);
  56   YGNodeStyleSetFlexShrink(root2_child0_child0_child0, 1);
  57   YGNodeInsertChild(root2_child0_child0, root2_child0_child0_child0, 0);
  58
  59   const int32_t cal2_configInstanceCount = YGConfigGetInstanceCount();
  60   const int32_t cal2_nodeInstanceCount = YGNodeGetInstanceCount();
  61
  62   YGNodeCalculateLayout(root2, YGUndefined, YGUndefined, YGDirectionLTR);
  63
  64   ASSERT_EQ(YGConfigGetInstanceCount(), cal2_configInstanceCount);
  65   ASSERT_EQ(YGNodeGetInstanceCount(), cal2_nodeInstanceCount);
  66
  67   ASSERT_TRUE(YGNodeLayoutGetDidUseLegacyFlag(root1));
  68   ASSERT_TRUE(YGNodeLayoutGetDidUseLegacyFlag(root2));
  69   ASSERT_TRUE(root1->isLayoutTreeEqualToNode(*root2));
  70
  71   YGNodeStyleSetAlignItems(root2, YGAlignFlexEnd);
  72
  73   const int32_t cal3_configInstanceCount = YGConfigGetInstanceCount();
  74   const int32_t cal3_nodeInstanceCount = YGNodeGetInstanceCount();
  75
  76   YGNodeCalculateLayout(root2, YGUndefined, YGUndefined, YGDirectionLTR);
  77
  78   ASSERT_EQ(YGConfigGetInstanceCount(), cal3_configInstanceCount);
  79   ASSERT_EQ(YGNodeGetInstanceCount(), cal3_nodeInstanceCount);
  80
  81   ASSERT_FALSE(root1->isLayoutTreeEqualToNode(*root2));
  82
  83   YGNodeFreeRecursive(root1);
  84   YGNodeFreeRecursive(root2);
  85
  86   YGConfigFree(config);
  87 }