public void LeadsOutOf(string pathDescription, string edgeDescription, bool expected)
{
var path = GraphFactory.CreatePath(pathDescription.Select(c => c.ToString()).ToArray());
var edge = GraphFactory.CreateEdge(edgeDescription);
edge.LeadsOutOf(path).Should().Be(expected);
}
public void CannotChangeItsSetOfEdges()
{
var edges = GraphFactory.CreateEdges("A-B").ToList();
var nodes = GraphFactory.CreateNodes("A", "B");
var graph = DirectedGraph.Of(edges, nodes);
graph.EdgeCount.Should().Be(1);
edges.Add(GraphFactory.CreateEdge("B-A"));
graph.EdgeCount.Should().Be(1);
}
private IEnumerable <DirectedEdge> CreateEdges(string sequence)
{
if (string.IsNullOrEmpty(sequence))
{
yield break;
}
var prev = sequence[0];
foreach (var c in sequence.Skip(1))
{
yield return(GraphFactory.CreateEdge(string.Format("{0}-{1}", prev, c)));
prev = c;
}
}