def test_n22_root(self):
     self.assertEqual(lca(self.n22, self.root), self.root.value)
 def test_n11_n1(self):
     self.assertEqual(lca(self.n11, self.n1), self.n1.value)
 def test_order(self):
     self.assertEqual(lca(self.n11, self.n1), lca(self.n1, self.n11))
 def test_n11_n22(self):
     self.assertEqual(lca(self.n11, self.n22), self.root.value)
 def test_n22_root(self):
     self.assertEqual(lca(self.n22, self.root), self.root.value)
 def test_order(self):
     self.assertEqual(lca(self.n11, self.n1), lca(self.n1, self.n11))
 def test_n11_n1(self):
     self.assertEqual(lca(self.n11, self.n1), self.n1.value)
 def test_n11_n22(self):
     self.assertEqual(lca(self.n11, self.n22), self.root.value)