def setUp(self):
self.stack = Stack()
def setUp(self):
self.stack = Stack()
class TestStack(unittest.TestCase):
def setUp(self):
self.stack = Stack()
def test_constructor(self):
self.assertTrue(self.stack.is_empty())
self.assertEquals(0, len(self.stack))
def test_one_push(self):
element = 'foo'
self.stack.push(element)
self.assertFalse(self.stack.is_empty())
self.assertEquals(1, len(self.stack))
def test_multiple_pushes(self):
elements = range(100)
for element in elements:
self.stack.push(element)
self.assertFalse(self.stack.is_empty())
self.assertEquals(len(elements), len(self.stack))
def test_one_pop(self):
element = 'foo'
self.stack.push(element)
self.assertEquals(element, self.stack.pop())
self.assertTrue(self.stack.is_empty())
self.assertEquals(0, len(self.stack))
def test_multiple_pops(self):
elements = range(100)
for element in elements:
self.stack.push(element)
for element in reversed(elements):
self.assertEquals(element, self.stack.pop())
self.assertTrue(self.stack.is_empty())
self.assertEquals(0, len(self.stack))
def test_pop_empty(self):
self.assertRaises(IndexError, self.stack.pop)
def test_pop_too_many(self):
self.stack.push('foo')
self.stack.pop()
self.assertRaises(IndexError, self.stack.pop)
def test_peek_empty(self):
self.assertRaises(IndexError, self.stack.peek)
class TestStack(unittest.TestCase):
def setUp(self):
self.stack = Stack()
def test_constructor(self):
self.assertTrue(self.stack.is_empty())
self.assertEquals(0, len(self.stack))
def test_one_push(self):
element = 'foo'
self.stack.push(element)
self.assertFalse(self.stack.is_empty())
self.assertEquals(1, len(self.stack))
def test_multiple_pushes(self):
elements = range(100)
for element in elements:
self.stack.push(element)
self.assertFalse(self.stack.is_empty())
self.assertEquals(len(elements), len(self.stack))
def test_one_pop(self):
element = 'foo'
self.stack.push(element)
self.assertEquals(element, self.stack.pop())
self.assertTrue(self.stack.is_empty())
self.assertEquals(0, len(self.stack))
def test_multiple_pops(self):
elements = range(100)
for element in elements:
self.stack.push(element)
for element in reversed(elements):
self.assertEquals(element, self.stack.pop())
self.assertTrue(self.stack.is_empty())
self.assertEquals(0, len(self.stack))
def test_pop_empty(self):
self.assertRaises(IndexError, self.stack.pop)
def test_pop_too_many(self):
self.stack.push('foo')
self.stack.pop()
self.assertRaises(IndexError, self.stack.pop)
def test_peek_empty(self):
self.assertRaises(IndexError, self.stack.peek)
