public void GraphExtensions_GetOrderedEdges_ReturnsOrderedEdgeDescriptors()
{
IGraph <string, string> graph = new AdjacencyList <string, string>();
graph.AddVertex("BBB");
graph.AddVertex("AAA");
graph.AddVertex("ABA");
graph.AddVertex("BAB");
graph.AddEdge("ABA", "BBB", "aba-bbb");
graph.AddEdge("ABA", "AAA", "aba-aaa");
graph.AddEdge("ABA", "BAB", "aba-bab");
// Those opposite edges will be ignored
graph.AddEdge("AAA", "ABA", "aaa-aba");
graph.AddEdge("BBB", "ABA", "bbb-aba");
var edges = graph.FindVertexDescriptor("ABA").GetOrderedEdges(StringComparer.CurrentCulture);
Assert.Equal(3, edges.Count());
Assert.Equal("AAA", edges.ElementAt(0).Vertex2);
Assert.Equal("BAB", edges.ElementAt(1).Vertex2);
Assert.Equal("BBB", edges.ElementAt(2).Vertex2);
}
