def test_size(self):
stk_a = StackLinked(4)
stk_a.push(6)
stk_a.push(7)
stk_a.push(8)
stk_a.push(9)
self.assertTrue(stk_a.is_full())
with self.assertRaises(IndexError):
stk_a.push(0)
self.assertEqual(stk_a.size(), 4 )
self.assertEqual(stk_a.pop(), 9 )
self.assertEqual(stk_a.size(), 3 )
self.assertFalse(stk_a.is_empty())
def test_StackLinked(self):
stack = StackLinked(3)
self.assertRaises(IndexError, stack.pop)
self.assertEqual(stack.is_empty(), True)
stack.push('book1')
self.assertEqual(stack.pop(), 'book1')
stack.push('book1')
stack.push('book2')
self.assertEqual(stack.peek(), 'book2')
self.assertEqual(stack.pop(), 'book2')
self.assertEqual(stack.peek(), 'book1')
stack.push('book2_2')
stack.push('book3')
self.assertRaises(IndexError, stack.push, 'book4')
self.assertEqual(stack.size(), 3)
self.assertEqual(stack.is_full(), True)