def testLinkWithParent(self):
n1 = Node('n1')
n2 = Node('n2')
n1.addLinkTo(n2)
self.assertEqual('n1', n2.parent.label)
def testNodeWithLinkToOtherNode(self):
n1 = Node('n1')
n2 = Node('n2')
n1.addLinkTo(n2)
self.assertEqual('n2', n1.links[0].label)