def test_InteriorNode_prefixTest1(self):
leaf1 = LeafNode(5)
leaf2 = LeafNode(10)
node1 = InteriorNode(Token('+'), leaf1, leaf2)
node2 = InteriorNode(Token('*'), leaf1, node1)
node3 = InteriorNode(Token('-'), node2, leaf2)
s = "- * 5 + 5 10 10"
print(node3.prefix())
self.assertEqual(node3.prefix(), s)
def test_InteriorNode_prefixTest2(self):
leaf1 = LeafNode(72)
leaf2 = LeafNode(14)
node1 = InteriorNode(Token('+'), leaf1, leaf2)
node2 = InteriorNode(Token('*'), leaf1, node1)
node3 = InteriorNode(Token('/'), node2, leaf2)
s = "/ * 72 + 72 14 14"
self.assertEqual(node3.prefix(), s)