def test_2c(self):
""" Push: single node stack """
s = Stack()
n1 = Node(1)
s.push(n1)
n2 = Node(2)
s.push(n2)
self.assertEqual(s.top, n2)
self.assertEqual(len(s), 2)
def test_3c(self):
""" Pop: multi-node stack """
s = Stack()
n1 = Node(1)
s.push(n1)
n2 = Node(2)
s.push(n2)
n = s.pop()
self.assertEqual(n, n2)
self.assertEqual(s.top, n1)
self.assertEqual(len(s), 1)
def test_2d(self):
""" Push: multi-node stack """
s = Stack()
n1 = Node(1)
s.push(n1)
n2 = Node(2)
s.push(n2)
n3 = Node(3)
s.push(n3)
self.assertEqual(s.top, n3)
self.assertEqual(len(s), 3)
pass
def test_2b(self):
""" Push: empty stack """
s = Stack()
n = Node(1)
s.push(n)
self.assertEqual(s.top, n)
self.assertEqual(len(s), 1)
pass
def test_3b(self):
""" Pop: single node stack """
s = Stack()
n1 = Node(1)
s.push(n1)
n = s.pop()
self.assertEqual(n, n1)
self.assertEqual(s.top, None)
self.assertEqual(len(s), 0)
def test_1a(self):
""" Create a Node """
n = Node(1)
self.assertEqual(n.value, 1)
self.assertEqual(n.next, None)
def test_1c(self):
""" Node Value Getter/Setter for Next """
n1 = Node(1)
n2 = Node(2)
n1.next = n2
self.assertEqual(n1.next, n2)
def test_1b(self):
""" Node Value Getter/Setter for Value """
n = Node(1)
n.value = 2
self.assertEqual(n.value, 2)