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YGDirtyMarkingTest.cpp
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/**
* 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 <gtest/gtest.h>
#include <yoga/YGNode.h>
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(root_child0->isDirty());
EXPECT_FALSE(root_child1->isDirty());
EXPECT_TRUE(root->isDirty());
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
EXPECT_FALSE(root_child0->isDirty());
EXPECT_FALSE(root_child1->isDirty());
EXPECT_FALSE(root->isDirty());
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(root_child0->isDirty());
EXPECT_FALSE(root_child1->isDirty());
EXPECT_FALSE(root->isDirty());
YGNodeFreeRecursive(root);
}
TEST(YogaTest, dirty_mark_all_children_as_dirty_when_display_changes) {
const YGNodeRef root = YGNodeNew();
YGNodeStyleSetFlexDirection(root, YGFlexDirectionRow);
YGNodeStyleSetHeight(root, 100);
const YGNodeRef child0 = YGNodeNew();
YGNodeStyleSetFlexGrow(child0, 1);
const YGNodeRef child1 = YGNodeNew();
YGNodeStyleSetFlexGrow(child1, 1);
const YGNodeRef child1_child0 = YGNodeNew();
const YGNodeRef child1_child0_child0 = YGNodeNew();
YGNodeStyleSetWidth(child1_child0_child0, 8);
YGNodeStyleSetHeight(child1_child0_child0, 16);
YGNodeInsertChild(child1_child0, child1_child0_child0, 0);
YGNodeInsertChild(child1, child1_child0, 0);
YGNodeInsertChild(root, child0, 0);
YGNodeInsertChild(root, child1, 0);
YGNodeStyleSetDisplay(child0, YGDisplayFlex);
YGNodeStyleSetDisplay(child1, YGDisplayNone);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetWidth(child1_child0_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetHeight(child1_child0_child0));
YGNodeStyleSetDisplay(child0, YGDisplayNone);
YGNodeStyleSetDisplay(child1, YGDisplayFlex);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_FLOAT_EQ(8, YGNodeLayoutGetWidth(child1_child0_child0));
ASSERT_FLOAT_EQ(16, YGNodeLayoutGetHeight(child1_child0_child0));
YGNodeStyleSetDisplay(child0, YGDisplayFlex);
YGNodeStyleSetDisplay(child1, YGDisplayNone);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetWidth(child1_child0_child0));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetHeight(child1_child0_child0));
YGNodeStyleSetDisplay(child0, YGDisplayNone);
YGNodeStyleSetDisplay(child1, YGDisplayFlex);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_FLOAT_EQ(8, YGNodeLayoutGetWidth(child1_child0_child0));
ASSERT_FLOAT_EQ(16, YGNodeLayoutGetHeight(child1_child0_child0));
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(root->isDirty());
YGNodeFree(child1);
YGNodeRemoveChild(root, child0);
EXPECT_TRUE(root->isDirty());
YGNodeFree(child0);
YGNodeFreeRecursive(root);
}
TEST(YogaTest, dirty_node_only_if_undefined_values_gets_set_to_undefined) {
const YGNodeRef root = YGNodeNew();
YGNodeStyleSetWidth(root, 50);
YGNodeStyleSetHeight(root, 50);
YGNodeStyleSetMinWidth(root, YGUndefined);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
EXPECT_FALSE(root->isDirty());
YGNodeStyleSetMinWidth(root, YGUndefined);
EXPECT_FALSE(root->isDirty());
YGNodeFreeRecursive(root);
}