class TestStack(unittest.TestCase):
def setUp(self):
self.stack = Stack()
def tearDown(self):
del self.stack
def test_push_pop_peek(self):
values = [10, 20, 30, 40, 50]
for value in values:
self.stack.push(value)
self.assertEqual(len(values), self.stack.size())
values.reverse()
for value in values:
self.assertEqual(value, self.stack.peek())
self.assertEqual(value, self.stack.pop())
def test_pop(self):
self.stack.push(10)
self.assertEqual(1, self.stack.size())
self.assertEqual(10, self.stack.pop())
self.assertEqual(0, self.stack.size())
def test_peek(self):
self.stack.push(10)
self.assertEqual(1, self.stack.size())
self.assertEqual(10, self.stack.peek())
self.assertEqual(1, self.stack.size())
def test_pop_empty(self):
self.assertIsNone(self.stack.pop())
def test_peek_empty(self):
self.assertIsNone(self.stack.peek())
def test():
s = Stack()
assert s.is_empty() is True
s.push(4)
assert s.items == [4]
s.push("dog")
assert s.items == [4, "dog"]
assert s.peek() == "dog"
s.push(True)
assert s.items == [4, "dog", True]
assert s.size() == 3
assert s.is_empty() is False
s.push(8.4)
assert s.items == [4, "dog", True, 8.4]
assert s.pop() == 8.4
assert s.pop() is True
assert s.size() == 2
class CalculatorTest(unittest.TestCase):
"""unitetestモジュールの簡単な実行例その2。"""
@classmethod
def setUpClass(cls):
pass
@classmethod
def tearDownClass(cls):
pass
def setUp(self):
self._stack = Stack()
def tearDown(self):
pass
def test_is_empty(self):
self.assertTrue(self._stack.is_empty())
self._stack.push(1)
self.assertFalse(self._stack.is_empty())
def test_size(self):
self.assertEqual(0, self._stack.size())
self._stack.push(1)
self.assertEqual(1, self._stack.size())
def test_push(self):
self._stack.push(1)
self.assertEqual(1, self._stack.top())
def test_pop(self):
self._stack.push(1)
self.assertEqual(1, self._stack.pop())
self.assertEqual(0, self._stack.size())
with self.assertRaises(IndexError):
self._stack.pop()
def test_top(self):
self._stack.push(1)
self.assertEqual(1, self._stack.top())
self.assertEqual(1, self._stack.size())
self._stack.pop()
with self.assertRaises(IndexError):
self._stack.top()
def test_size(self):
# test if the size is being enforced
stack = Stack(size=10)
for num in range(1000):
stack.push(num)
assert stack.size() == 10
assert stack.stack == [_ for _ in range(10)]
def validate_brackets(sentence):
brackets = Stack()
for char in sentence:
if char == '(':
brackets.push(True)
elif char == ')':
if brackets.pop() is not True:
return False
return brackets.size() == 0
def test_stack_exceptions(self):
with self.assertRaises(ValueError):
s = Stack("A")
with self.assertRaises(ValueError):
s = Stack(10)
s.size = "A"
with self.assertRaises(ValueError):
s = Stack(10)
s.top = "A"
