/** * 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. */ #include #include TEST(YogaTest, dirty_propagation) { const YGNodeRef root = YGNodeNew(); YGNodeStyleSetAlignItems(root, YGAlignFlexStart); YGNodeStyleSetWidth(root, 100); YGNodeStyleSetHeight(root, 100); const YGNodeRef root_child0 = YGNodeNew(); YGNodeStyleSetWidth(root_child0, 50); YGNodeStyleSetHeight(root_child0, 20); YGNodeInsertChild(root, root_child0, 0); const YGNodeRef root_child1 = YGNodeNew(); YGNodeStyleSetWidth(root_child1, 50); YGNodeStyleSetHeight(root_child1, 20); YGNodeInsertChild(root, root_child1, 1); YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR); YGNodeStyleSetWidth(root_child0, 20); EXPECT_TRUE(YGNodeIsDirty(root_child0)); EXPECT_FALSE(YGNodeIsDirty(root_child1)); EXPECT_TRUE(YGNodeIsDirty(root)); YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR); EXPECT_FALSE(YGNodeIsDirty(root_child0)); EXPECT_FALSE(YGNodeIsDirty(root_child1)); EXPECT_FALSE(YGNodeIsDirty(root)); YGNodeFreeRecursive(root); } TEST(YogaTest, dirty_propagation_only_if_prop_changed) { const YGNodeRef root = YGNodeNew(); YGNodeStyleSetAlignItems(root, YGAlignFlexStart); YGNodeStyleSetWidth(root, 100); YGNodeStyleSetHeight(root, 100); const YGNodeRef root_child0 = YGNodeNew(); YGNodeStyleSetWidth(root_child0, 50); YGNodeStyleSetHeight(root_child0, 20); YGNodeInsertChild(root, root_child0, 0); const YGNodeRef root_child1 = YGNodeNew(); YGNodeStyleSetWidth(root_child1, 50); YGNodeStyleSetHeight(root_child1, 20); YGNodeInsertChild(root, root_child1, 1); YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR); YGNodeStyleSetWidth(root_child0, 50); EXPECT_FALSE(YGNodeIsDirty(root_child0)); EXPECT_FALSE(YGNodeIsDirty(root_child1)); EXPECT_FALSE(YGNodeIsDirty(root)); YGNodeFreeRecursive(root); } TEST(YogaTest, dirty_node_only_if_children_are_actually_removed) { const YGNodeRef root = YGNodeNew(); YGNodeStyleSetAlignItems(root, YGAlignFlexStart); YGNodeStyleSetWidth(root, 50); YGNodeStyleSetHeight(root, 50); const YGNodeRef child0 = YGNodeNew(); YGNodeStyleSetWidth(child0, 50); YGNodeStyleSetHeight(child0, 25); YGNodeInsertChild(root, child0, 0); YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR); const YGNodeRef child1 = YGNodeNew(); YGNodeRemoveChild(root, child1); EXPECT_FALSE(YGNodeIsDirty(root)); YGNodeFree(child1); YGNodeRemoveChild(root, child0); EXPECT_TRUE(YGNodeIsDirty(root)); YGNodeFree(child0); YGNodeFreeRecursive(root); }