def test_LCASame(self):
root = Node(1)
root.left = Node(2)
root.right = Node(3)
root.left.left = Node(4)
root.left.right = Node(5)
root.right.left = Node(6)
root.right.right = Node(7)
answer = LowestCommonAncestor.LCA(root, 7, 7)
self.assertEqual(answer, 7)
answer = LowestCommonAncestor.LCA(root, 4, 4)
self.assertEqual(answer, 4)
def test_findRoute1(self):
root = None
route = None
x = None
answer = LowestCommonAncestor.findRoute(root, route, x)
self.assertIs(answer, False)
def test_findRoute2(self):
root = Node(1)
route = []
x = 1
answer = LowestCommonAncestor.findRoute(root, route, x)
self.assertIs(answer, True)
def test_LCARoot(self):
root = Node(1)
root.left = Node(2)
root.right = Node(3)
root.left.left = Node(4)
root.left.right = Node(5)
root.right.left = Node(6)
root.right.right = Node(7)
answer = LowestCommonAncestor.LCA(root, 1, 1)
self.assertEqual(answer, 1)
def test_simple(self):
root = Node(1)
root.left = Node(2)
root.right = Node(3)
root.left.left = Node(4)
root.left.right = Node(5)
root.right.left = Node(6)
root.right.right = Node(7)
lca = LowestCommonAncestor.findLCA(root, 4, 5)
assert lca.value is 2
def test_p_is_lowest(self):
root = Node(3)
root.left = Node(5)
root.right = Node(1)
root.left.left = Node(6)
root.left.right = Node(2)
root.right.left = Node(0)
root.right.right = Node(8)
root.left.right.left = Node(7)
root.left.right.right = Node(4)
lca = LowestCommonAncestor.findLCA(root, 5, 4)
assert lca.value is 5
def test_LCA(self):
root = Node(1)
root.left = Node(2)
root.right = Node(3)
root.left.left = Node(4)
root.left.right = Node(5)
root.right.left = Node(6)
root.right.right = Node(7)
answer = LowestCommonAncestor.LCA(root, 2, 7)
self.assertEqual(answer, 1)
answer = LowestCommonAncestor.LCA(root, 2, 5)
self.assertEqual(answer, 2)
answer = LowestCommonAncestor.LCA(root, 4, 6)
self.assertEqual(answer, 1)
answer = LowestCommonAncestor.LCA(root, 6, 7)
self.assertEqual(answer, 3)
answer = LowestCommonAncestor.LCA(root, 4, 5)
self.assertEqual(answer, 2)
answer = LowestCommonAncestor.LCA(root, 5, 6)
self.assertEqual(answer, 1)
def test_LCANone(self):
root = None
answer = LowestCommonAncestor.LCA(root, 7, 7)
self.assertEqual(answer, -1)
def test_LCAOnlyRoot(self):
root = Node(1)
answer = LowestCommonAncestor.LCA(root, 1, 1)
self.assertEqual(answer, 1)
def test_null(self):
root = None
lca = LowestCommonAncestor.findLCA(root, 4, 5)
assert lca is None