public void UndirectedConnectionsAreMarked()
{
var input = CreateTestInput();
var g = new Graph(GraphType.Undirected, input, 7);
var search = new Dfs(g, 0);
Assert.IsTrue(search.Marked(2));
Assert.IsTrue(search.Marked(3));
Assert.IsTrue(search.Marked(5));
Assert.IsFalse(search.Marked(1));
Assert.IsFalse(search.Marked(4));
Assert.IsFalse(search.Marked(6));
}
