def parenChecker(exp):
exp_list = list(exp)
s = Stack()
for token in exp_list:
if token == '(':
s.push(token)
elif token == ')':
s.pop()
if s.size() > 0:
return False
else:
return True
def setUp(self): self.testStack = Stack()
class StackTests(unittest.TestCase):
def setUp(self):
self.testStack = Stack()
def test_push(self):
self.testStack.push(4)
self.assertEqual([4], self.testStack.show())
def test_pop_singleItemStack(self):
self.testStack.push(4)
self.assertEqual(4, self.testStack.pop())
def test_pop_multiItemStack(self):
self.testStack.push('1')
self.testStack.push('2')
self.assertEqual('2', self.testStack.pop())
def test_pop_emptyStack(self):
with self.assertRaises(Exception):
self.testStack.pop()
def test_size(self):
self.testStack.push(4)
self.assertEqual(1, self.testStack.size())
def test_isEmpty(self):
self.assertTrue(self.testStack.isEmpty())
self.testStack.push('item')
self.assertFalse(self.testStack.isEmpty())
