public void ObserveChildNodes_callback_should_be_noop(MutationData data)
{
var doc = new DomDocument().LoadXml(@"
<root><a/><b/><c/></root>
");
var element = doc.DocumentElement;
var evts = new TestActionDispatcher <DomMutationEvent>(_ => {});
doc.ObserveChildNodes(element, evts.Invoke);
data.Action(element);
Assert.Equal(0, evts.CallCount);
}
public void ObserveChildNodes_callback_should_be_invoked_on_mutation_nodes(MutationData data)
{
var doc = new DomDocument().LoadXml(@"
<root><a/><b/><c/></root>
");
var element = doc.DocumentElement;
var evts = new TestActionDispatcher <DomMutationEvent>(_ => {});
var expected = data.Event(element);
doc.ObserveChildNodes(element, evts.Invoke);
data.Action(element);
var actuallyAddedNodes = data.Event(element).AddedNodes;
Assert.Equal(1, evts.CallCount);
Assert.Equal(actuallyAddedNodes.NodeNames(), evts.ArgsForCall(0).AddedNodes.NodeNames());
Assert.Equal(expected.RemovedNodes.NodeNames(), evts.ArgsForCall(0).RemovedNodes.NodeNames());
Assert.Same(expected.NextSiblingNode, evts.ArgsForCall(0).NextSiblingNode);
Assert.Same(expected.PreviousSiblingNode, evts.ArgsForCall(0).PreviousSiblingNode);
}