public void ShouldReplaceLinkInAll()
{
// arrange
var source = new SampleNode("source");
var target = new SampleNode("target");
var graph = new Graph();
graph.AddNode(source);
graph.AddNode(target);
var firstLink = new SampleLink();
graph.AddLink(source, target, firstLink);
var secondLink = new SecondLink();
// act
graph.ReplaceLink(firstLink, secondLink);
// Assert
Assert.That(graph.Links, Has.Count.EqualTo(1));
Assert.That(graph.Links, Has.No.Member(firstLink));
Assert.That(graph.Links, Has.Member(secondLink));
Assert.That(secondLink.Source, Is.SameAs(source));
Assert.That(secondLink.Target, Is.SameAs(target));
Assert.That(source.OutboundLinks, Has.No.Member(firstLink));
Assert.That(target.InboundLinks, Has.No.Member(firstLink));
Assert.That(source.OutboundLinks, Has.Member(secondLink));
Assert.That(target.InboundLinks, Has.Member(secondLink));
}
