public void ToDot_Should_Return_DiGraph_Entity()
{
var graph = new UndirectedGraph { Name = "a" };
var dot = graph.ToDot();
Assert.IsTrue(Regex.Match(dot, "^graph \\\"a\\\" \\{[^}]*\\}$", RegexOptions.Multiline).Success);
}
public void Add_Returns_Parent_Expression() {
var graph = new UndirectedGraph();
var a = new GraphNode("a");
var b = new GraphNode("b");
graph.AddNode(a);
graph.AddNode(b);
var graphExpression = new GraphExpression<IUndirectedGraph>(graph);
var expression = new EdgeCollectionModifiersExpression<IGraphExpression>(graph, graphExpression);
var instance = expression.Add(edges => edges.FromNodeWithName("a").ToNodeWithName("b"));
Assert.AreSame(instance, graphExpression);
}