def test_add(self):
new_stack = Stack()
new_stack.add(5)
new_stack.add(10)
new_stack.add(20)
result = new_stack.return_data()
self.assertEqual(result, [5, 10, 20])
def test_empty(self):
new_stack = Stack()
new_stack.add(60)
result_not_empty = new_stack.is_empty()
self.assertTrue(result_not_empty)
new_stack.remove()
result_empty = new_stack.is_empty()
self.assertFalse(result_empty)
def test_peek(self):
new_stack = Stack()
new_stack.add(5)
new_stack.add(10)
self.assertIs(new_stack.peek(), 10)
new_stack.add(20)
self.assertIs(new_stack.peek(), 20)
def testLastelement(self):
s = Stack()
s.add("Andy")
self.assertTrue(s.check_last_item() == "Andy")
s.add("Pignanelli")
self.assertTrue(s.check_last_item() == "Pignanelli")
def testEmpty(self):
s = Stack()
self.assertTrue(s.isEmpty())
s.add("Stuff")
self.assertFalse(s.isEmpty())
def testSize(self):
s = Stack()
s.add("1")
self.assertTrue(s.size() == 1)
s.remove()
self.assertFalse(s.size() == 1)
def testRemove(self):
s = Stack()
s.add("1")
s.add("2")
s.remove()
self.assertTrue(s.size() == 1)
def testAdd(self):
s = Stack()
s.add("1")
s.add("2")
self.assertTrue(s.size() == 2)
