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/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#include <gtest/gtest.h>
#include <yoga/Yoga.h>
#include <yoga/node/Node.h>
#include "util/TestUtil.h"
using namespace facebook;
using facebook::yoga::test::TestUtil;
TEST(YogaTest, cloning_shared_root) {
YGConfigRef config = YGConfigNew();
YGNodeRef root = YGNodeNewWithConfig(config);
YGNodeStyleSetWidth(root, 100);
YGNodeStyleSetHeight(root, 100);
YGNodeRef root_child0 = YGNodeNewWithConfig(config);
YGNodeStyleSetFlexGrow(root_child0, 1);
YGNodeStyleSetFlexBasis(root_child0, 50);
YGNodeInsertChild(root, root_child0, 0);
YGNodeRef root_child1 = YGNodeNewWithConfig(config);
YGNodeStyleSetFlexGrow(root_child1, 1);
YGNodeInsertChild(root, root_child1, 1);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
ASSERT_FLOAT_EQ(100, YGNodeLayoutGetWidth(root));
ASSERT_FLOAT_EQ(100, YGNodeLayoutGetHeight(root));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
ASSERT_FLOAT_EQ(100, YGNodeLayoutGetWidth(root_child0));
ASSERT_FLOAT_EQ(75, YGNodeLayoutGetHeight(root_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child1));
ASSERT_FLOAT_EQ(75, YGNodeLayoutGetTop(root_child1));
ASSERT_FLOAT_EQ(100, YGNodeLayoutGetWidth(root_child1));
ASSERT_FLOAT_EQ(25, YGNodeLayoutGetHeight(root_child1));
YGNodeRef root2 = YGNodeClone(root);
YGNodeStyleSetWidth(root2, 100);
ASSERT_EQ(2u, YGNodeGetChildCount(root2));
// The children should have referential equality at this point.
ASSERT_EQ(root_child0, YGNodeGetChild(root2, 0));
ASSERT_EQ(root_child1, YGNodeGetChild(root2, 1));
YGNodeCalculateLayout(root2, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_EQ(2u, YGNodeGetChildCount(root2));
// Relayout with no changed input should result in referential equality.
ASSERT_EQ(root_child0, YGNodeGetChild(root2, 0));
ASSERT_EQ(root_child1, YGNodeGetChild(root2, 1));
YGNodeStyleSetWidth(root2, 150);
YGNodeStyleSetHeight(root2, 200);
YGNodeCalculateLayout(root2, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_EQ(2u, YGNodeGetChildCount(root2));
// Relayout with changed input should result in cloned children.
YGNodeRef root2_child0 = YGNodeGetChild(root2, 0);
YGNodeRef root2_child1 = YGNodeGetChild(root2, 1);
ASSERT_NE(root_child0, root2_child0);
ASSERT_NE(root_child1, root2_child1);
// Everything in the root should remain unchanged.
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
ASSERT_FLOAT_EQ(100, YGNodeLayoutGetWidth(root));
ASSERT_FLOAT_EQ(100, YGNodeLayoutGetHeight(root));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
ASSERT_FLOAT_EQ(100, YGNodeLayoutGetWidth(root_child0));
ASSERT_FLOAT_EQ(75, YGNodeLayoutGetHeight(root_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child1));
ASSERT_FLOAT_EQ(75, YGNodeLayoutGetTop(root_child1));
ASSERT_FLOAT_EQ(100, YGNodeLayoutGetWidth(root_child1));
ASSERT_FLOAT_EQ(25, YGNodeLayoutGetHeight(root_child1));
// The new root now has new layout.
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root2));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root2));
ASSERT_FLOAT_EQ(150, YGNodeLayoutGetWidth(root2));
ASSERT_FLOAT_EQ(200, YGNodeLayoutGetHeight(root2));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root2_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root2_child0));
ASSERT_FLOAT_EQ(150, YGNodeLayoutGetWidth(root2_child0));
ASSERT_FLOAT_EQ(125, YGNodeLayoutGetHeight(root2_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root2_child1));
ASSERT_FLOAT_EQ(125, YGNodeLayoutGetTop(root2_child1));
ASSERT_FLOAT_EQ(150, YGNodeLayoutGetWidth(root2_child1));
ASSERT_FLOAT_EQ(75, YGNodeLayoutGetHeight(root2_child1));
YGNodeFreeRecursive(root2);
YGNodeFreeRecursive(root);
YGConfigFree(config);
}
TEST(YogaTest, mutating_children_of_a_clone_clones_only_after_layout) {
YGConfigRef config = YGConfigNew();
YGNodeRef root = YGNodeNewWithConfig(config);
ASSERT_EQ(0u, YGNodeGetChildCount(root));
YGNodeRef root2 = YGNodeClone(root);
ASSERT_EQ(0u, YGNodeGetChildCount(root2));
YGNodeRef root2_child0 = YGNodeNewWithConfig(config);
YGNodeInsertChild(root2, root2_child0, 0);
ASSERT_EQ(0u, YGNodeGetChildCount(root));
ASSERT_EQ(1u, YGNodeGetChildCount(root2));
YGNodeRef root3 = YGNodeClone(root2);
ASSERT_EQ(1u, YGNodeGetChildCount(root2));
ASSERT_EQ(1u, YGNodeGetChildCount(root3));
ASSERT_EQ(YGNodeGetChild(root2, 0), YGNodeGetChild(root3, 0));
YGNodeRef root3_child1 = YGNodeNewWithConfig(config);
YGNodeInsertChild(root3, root3_child1, 1);
ASSERT_EQ(1u, YGNodeGetChildCount(root2));
ASSERT_EQ(2u, YGNodeGetChildCount(root3));
ASSERT_EQ(root3_child1, YGNodeGetChild(root3, 1));
ASSERT_EQ(YGNodeGetChild(root2, 0), YGNodeGetChild(root3, 0));
YGNodeRef root4 = YGNodeClone(root3);
ASSERT_EQ(root3_child1, YGNodeGetChild(root4, 1));
YGNodeRemoveChild(root4, root3_child1);
ASSERT_EQ(2u, YGNodeGetChildCount(root3));
ASSERT_EQ(1u, YGNodeGetChildCount(root4));
ASSERT_EQ(YGNodeGetChild(root3, 0), YGNodeGetChild(root4, 0));
YGNodeCalculateLayout(root4, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_NE(YGNodeGetChild(root3, 0), YGNodeGetChild(root4, 0));
YGNodeCalculateLayout(root3, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_NE(YGNodeGetChild(root2, 0), YGNodeGetChild(root3, 0));
YGNodeFreeRecursive(root4);
YGNodeFreeRecursive(root3);
YGNodeFreeRecursive(root2);
YGNodeFreeRecursive(root);
YGConfigFree(config);
}
TEST(YogaTest, cloning_two_levels) {
YGConfigRef config = YGConfigNew();
YGNodeRef root = YGNodeNewWithConfig(config);
YGNodeStyleSetWidth(root, 100);
YGNodeStyleSetHeight(root, 100);
YGNodeRef root_child0 = YGNodeNewWithConfig(config);
YGNodeStyleSetFlexGrow(root_child0, 1);
YGNodeStyleSetFlexBasis(root_child0, 15);
YGNodeInsertChild(root, root_child0, 0);
YGNodeRef root_child1 = YGNodeNewWithConfig(config);
YGNodeStyleSetFlexGrow(root_child1, 1);
YGNodeInsertChild(root, root_child1, 1);
YGNodeRef root_child1_0 = YGNodeNewWithConfig(config);
YGNodeStyleSetFlexBasis(root_child1_0, 10);
YGNodeStyleSetFlexGrow(root_child1_0, 1);
YGNodeInsertChild(root_child1, root_child1_0, 0);
YGNodeRef root_child1_1 = YGNodeNewWithConfig(config);
YGNodeStyleSetFlexBasis(root_child1_1, 25);
YGNodeInsertChild(root_child1, root_child1_1, 1);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_FLOAT_EQ(40, YGNodeLayoutGetHeight(root_child0));
ASSERT_FLOAT_EQ(60, YGNodeLayoutGetHeight(root_child1));
ASSERT_FLOAT_EQ(35, YGNodeLayoutGetHeight(root_child1_0));
ASSERT_FLOAT_EQ(25, YGNodeLayoutGetHeight(root_child1_1));
YGNodeRef root2_child0 = YGNodeClone(root_child0);
YGNodeRef root2_child1 = YGNodeClone(root_child1);
YGNodeRef root2 = YGNodeClone(root);
YGNodeStyleSetFlexGrow(root2_child0, 0);
YGNodeStyleSetFlexBasis(root2_child0, 40);
YGNodeRemoveAllChildren(root2);
YGNodeInsertChild(root2, root2_child0, 0);
YGNodeInsertChild(root2, root2_child1, 1);
ASSERT_EQ(2u, YGNodeGetChildCount(root2));
YGNodeCalculateLayout(root2, YGUndefined, YGUndefined, YGDirectionLTR);
// Original root is unchanged
ASSERT_FLOAT_EQ(40, YGNodeLayoutGetHeight(root_child0));
ASSERT_FLOAT_EQ(60, YGNodeLayoutGetHeight(root_child1));
ASSERT_FLOAT_EQ(35, YGNodeLayoutGetHeight(root_child1_0));
ASSERT_FLOAT_EQ(25, YGNodeLayoutGetHeight(root_child1_1));
// New root has new layout at the top
ASSERT_FLOAT_EQ(40, YGNodeLayoutGetHeight(root2_child0));
ASSERT_FLOAT_EQ(60, YGNodeLayoutGetHeight(root2_child1));
// The deeper children are untouched.
ASSERT_EQ(YGNodeGetChild(root2_child1, 0), root_child1_0);
ASSERT_EQ(YGNodeGetChild(root2_child1, 1), root_child1_1);
YGNodeFreeRecursive(root2);
YGNodeFreeRecursive(root);
YGConfigFree(config);
}
TEST(YogaTest, cloning_and_freeing) {
TestUtil::startCountingNodes();
YGConfigRef config = YGConfigNew();
YGNodeRef root = YGNodeNewWithConfig(config);
YGNodeStyleSetWidth(root, 100);
YGNodeStyleSetHeight(root, 100);
YGNodeRef root_child0 = YGNodeNewWithConfig(config);
YGNodeInsertChild(root, root_child0, 0);
YGNodeRef root_child1 = YGNodeNewWithConfig(config);
YGNodeInsertChild(root, root_child1, 1);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
YGNodeRef root2 = YGNodeClone(root);
// Freeing the original root should be safe as long as we don't free its
// children.
YGNodeFree(root);
YGNodeCalculateLayout(root2, YGUndefined, YGUndefined, YGDirectionLTR);
YGNodeFreeRecursive(root2);
YGNodeFree(root_child0);
YGNodeFree(root_child1);
YGConfigFree(config);
ASSERT_EQ(0, TestUtil::stopCountingNodes());
}
TEST(YogaTest, mixed_shared_and_owned_children) {
// Don't try this at home!
YGNodeRef root0 = YGNodeNew();
YGNodeRef root1 = YGNodeNew();
YGNodeRef root0_child0 = YGNodeNew();
YGNodeRef root0_child0_0 = YGNodeNew();
YGNodeInsertChild(root0, root0_child0, 0);
YGNodeInsertChild(root0_child0, root0_child0_0, 0);
YGNodeRef root1_child0 = YGNodeNew();
YGNodeRef root1_child2 = YGNodeNew();
YGNodeInsertChild(root1, root1_child0, 0);
YGNodeInsertChild(root1, root1_child2, 1);
auto children = static_cast<yoga::Node*>(root1)->getChildren();
children.insert(children.begin() + 1, static_cast<yoga::Node*>(root0_child0));
static_cast<yoga::Node*>(root1)->setChildren(children);
auto secondChild = YGNodeGetChild(root1, 1);
ASSERT_EQ(secondChild, YGNodeGetChild(root0, 0));
ASSERT_EQ(YGNodeGetChild(secondChild, 0), YGNodeGetChild(root0_child0, 0));
YGNodeCalculateLayout(root1, YGUndefined, YGUndefined, YGDirectionLTR);
secondChild = YGNodeGetChild(root1, 1);
ASSERT_NE(secondChild, YGNodeGetChild(root0, 0));
ASSERT_EQ(YGNodeGetOwner(secondChild), root1);
ASSERT_NE(YGNodeGetChild(secondChild, 0), YGNodeGetChild(root0_child0, 0));
ASSERT_EQ(YGNodeGetOwner(YGNodeGetChild(secondChild, 0)), secondChild);
}
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