def test_stack03(self):
stack = Stack(10)
stack.push(1)
stack.push(2)
stack.push(30)
self.assertFalse(stack.is_full())
self.assertFalse(stack.is_empty())
self.assertEqual(stack.peek(),30)
self.assertEqual(stack.size(),3)
self.assertEqual(stack.pop(),30)
def test_stack(self):
#checking when stack is has no elements in it
stack = Stack(10)
self.assertTrue(stack.is_empty())
self.assertFalse(stack.is_full())
self.assertEqual(stack.size(),0)
def test_stack01(self):
#testing index error for push
stack= Stack(1)
stack.push(1)
with self.assertRaises(IndexError):
stack.push(2)
def test2(self):
stack = Stack(5)
stack.push(4)
stack.push(3)
stack.push(2)
stack.push(1)
stack.push(0)
self.assertTrue(stack.is_full())
self.assertFalse(stack.is_empty())
self.assertEqual(stack.size(), 5)
with self.assertRaises(IndexError):
stack.push(9)
stack.pop()
stack.pop()
stack.pop()
stack.pop()
stack.pop()
self.assertTrue(stack.is_empty())
self.assertFalse(stack.is_full())
self.assertEqual(stack.size(), 0)
with self.assertRaises(IndexError):
stack.pop()
with self.assertRaises(IndexError):
stack.peek()