public void sets_names()
{
theGraph.AddToSet("setA", "a-1.js");
theGraph.AddToSet("setA", "a-2.js");
theGraph.AddToSet("setB", "b-1.js");
theGraph.AddToSet("setB", "b-2.js");
var sets = new List <string>();
theGraph.ForEachSetName(sets.Add);
sets.ShouldEqual(new[] { "setA", "setB" });
}