[Test] public void dirty_node_only_if_children_are_actually_removed()
{
YGNode root = YGNodeNew();
YGNodeStyleSetAlignItems(root, YGAlign.FlexStart);
YGNodeStyleSetWidth(root, 50);
YGNodeStyleSetHeight(root, 50);
YGNode child0 = YGNodeNew();
YGNodeStyleSetWidth(child0, 50);
YGNodeStyleSetHeight(child0, 25);
YGNodeInsertChild(root, child0, 0);
YGNodeCalculateLayout(root, YGValue.YGUndefined, YGValue.YGUndefined, YGDirection.LTR);
YGNode child1 = YGNodeNew();
YGNodeRemoveChild(root, child1);
Assert.IsFalse(root.isDirty());
YGNodeRemoveChild(root, child0);
Assert.IsTrue(root.isDirty());
}
[Test] public void dirty_propagation()
{
YGNode root = YGNodeNew();
YGNodeStyleSetAlignItems(root, YGAlign.FlexStart);
YGNodeStyleSetWidth(root, 100);
YGNodeStyleSetHeight(root, 100);
YGNode root_child0 = YGNodeNew();
YGNodeStyleSetWidth(root_child0, 50);
YGNodeStyleSetHeight(root_child0, 20);
YGNodeInsertChild(root, root_child0, 0);
YGNode root_child1 = YGNodeNew();
YGNodeStyleSetWidth(root_child1, 50);
YGNodeStyleSetHeight(root_child1, 20);
YGNodeInsertChild(root, root_child1, 1);
YGNodeCalculateLayout(root, YGValue.YGUndefined, YGValue.YGUndefined, YGDirection.LTR);
YGNodeStyleSetWidth(root_child0, 20);
Assert.IsTrue(root_child0.isDirty());
Assert.IsFalse(root_child1.isDirty());
Assert.IsTrue(root.isDirty());
YGNodeCalculateLayout(root, YGValue.YGUndefined, YGValue.YGUndefined, YGDirection.LTR);
Assert.IsFalse(root_child0.isDirty());
Assert.IsFalse(root_child1.isDirty());
Assert.IsFalse(root.isDirty());
}
[Test] public void copy_style_same()
{
YGNode node0 = YGNodeNew();
YGNode node1 = YGNodeNew();
Assert.IsFalse(node0.isDirty());
YGNodeCopyStyle(node0, node1);
Assert.IsFalse(node0.isDirty());
}
[Test] public void dirty_node_only_if_undefined_values_gets_set_to_undefined()
{
YGNode root = YGNodeNew();
YGNodeStyleSetWidth(root, 50);
YGNodeStyleSetHeight(root, 50);
YGNodeStyleSetMinWidth(root, YGValue.YGUndefined);
YGNodeCalculateLayout(root, YGValue.YGUndefined, YGValue.YGUndefined, YGDirection.LTR);
Assert.IsFalse(root.isDirty());
YGNodeStyleSetMinWidth(root, YGValue.YGUndefined);
Assert.IsFalse(root.isDirty());
}
[Test] public void copy_style_modified_same()
{
YGNode node0 = YGNodeNew();
YGNodeStyleSetFlexDirection(node0, YGFlexDirection.Row);
YGNodeStyleSetMaxHeight(node0, 10);
YGNodeCalculateLayout(node0, YGValue.YGUndefined, YGValue.YGUndefined, YGDirection.LTR);
Assert.IsFalse(node0.isDirty());
YGNode node1 = YGNodeNew();
YGNodeStyleSetFlexDirection(node1, YGFlexDirection.Row);
YGNodeStyleSetMaxHeight(node1, 10);
YGNodeCopyStyle(node0, node1);
Assert.IsFalse(node0.isDirty());
}
[Test] public void copy_style_modified()
{
YGNode node0 = YGNodeNew();
Assert.IsFalse(node0.isDirty());
Assert.AreEqual(YGFlexDirection.Column, YGNodeStyleGetFlexDirection(node0));
Assert.IsFalse(YGNodeStyleGetMaxHeight(node0).unit != YGUnit.Undefined);
YGNode node1 = YGNodeNew();
YGNodeStyleSetFlexDirection(node1, YGFlexDirection.Row);
YGNodeStyleSetMaxHeight(node1, 10);
YGNodeCopyStyle(node0, node1);
Assert.IsTrue(node0.isDirty());
Assert.AreEqual(YGFlexDirection.Row, YGNodeStyleGetFlexDirection(node0));
Assert.AreEqual(10, YGNodeStyleGetMaxHeight(node0).value);
}