def test_complexe_distance(self):
com = Node("COM")
b = Node("B", com)
c = Node("C", b)
g = Node("G", b)
h = Node("H", g)
self.assertEqual(h.distance(), 3)
def test_no_distance(self):
n = Node("test")
self.assertEqual(n.distance(), 0)
def test_simple_distance(self):
com = Node("COM")
b = Node("B", com)
c = Node("C", b)
self.assertEqual(c.distance(), 2)
