public void Route_NoPossibleRoute_Test()
{
Node 一 = new Node(new Vector2(1, 1));
Node 二 = new Node(new Vector2(4, 7));
path.Add(一);
path.Add(二);
Stack <Node> expected = new Stack <Node>();
Stack <Node> actual = path.Route(一, 二);
Assert.IsTrue(expected.SequenceEqual(actual));
}