public void DescendantAddedExistingChildren()
{
var root = new TestElement();
var tier2 = new TestElement();
var child = new TestElement
{
Children =
{
tier2
}
};
bool tier1added = false;
bool tier2added = false;
root.DescendantAdded += (sender, args) =>
{
if (!tier1added)
{
tier1added = ReferenceEquals(child, args.Element);
}
if (!tier2added)
{
tier2added = ReferenceEquals(tier2, args.Element);
}
};
root.Children.Add(child);
Assert.That(tier1added, Is.True);
Assert.That(tier2added, Is.True);
}
public void DescendantAddedLevel1()
{
var root = new TestElement();
var child = new TestElement();
bool added = false;
root.DescendantAdded += (sender, args) =>
{
Assert.That(args.Element, Is.SameAs(child));
added = true;
};
root.Children.Add(child);
}
public void DescendantRemovedLevel2()
{
var root = new TestElement();
var child = new TestElement();
root.Children.Add(child);
var child2 = new TestElement();
child.Children.Add(child2);
bool removed = false;
root.DescendantRemoved += (sender, args) =>
{
Assert.That(args.Element, Is.SameAs(child2));
removed = true;
};
child.Children.Remove(child2);
}