def test_append_left_1(self):
expected = Deque.from_iterable([3, 2, 1])
d = Deque()
d.append_left(1)
d.append_left(2)
d.append_left(3)
actual = d
self.assertEqual(actual, expected)
def test_append_1(self):
expected = Deque.from_iterable([1, 2, 3])
d = Deque()
d.append(1)
d.append(2)
d.append(3)
actual = d
self.assertEqual(actual, expected)
def test_pop_left_from_near_empty(self):
expected = 0
d = Deque().from_iterable([0])
self.assertEqual(len(d), 1)
actual = d.pop_left()
self.assertEqual(actual, expected)
self.assertEqual(len(d), 0)
def test_pop_left_from_many(self):
expected = 0
d = Deque().from_iterable([0, 1, 2, 3])
size, ndx = 4, 0
self.assertEqual(len(d), size)
while d:
self.assertEqual(d.pop_left(), ndx)
size, ndx = size - 1, ndx + 1
self.assertEqual(len(d), size)
def test_rotate_minus_1(self):
expected = Deque().from_iterable([1, 2, 3, 4, 0])
actual = Deque().from_iterable(range(5))
actual.rotate(-1)
self.assertEqual(expected, actual)
def test_rotate_2(self):
expected = Deque().from_iterable([4, 0, 1, 2, 3])
actual = Deque().from_iterable(range(5))
actual.rotate(1)
self.assertEqual(expected, actual)
def test_rotate_1(self):
expected = Deque().from_iterable([4, 0, 1, 2, 3])
actual = Deque().from_iterable(range(5))
actual.rotate() # test default parameter
self.assertEqual(expected, actual)
def test_pop_left_from_empty(self):
d = Deque()
with self.assertRaises(IndexError):
d.pop_left()
def test_something(self):
self.assertIsInstance(Deque(), Deque)
def test_append_left_2(self):
expected = Deque.from_iterable([0])
d = Deque()
d.append_left(0)
actual = d
self.assertEqual(actual, expected)
def test_rotate_minus_minus_3(self):
expected = Deque().from_iterable([3, 4, 0, 1, 2])
actual = Deque().from_iterable(range(5))
actual.rotate(-3)
self.assertEqual(expected, actual)
def test_rotate_3(self):
expected = Deque().from_iterable([2, 3, 4, 0, 1])
actual = Deque().from_iterable(range(5))
actual.rotate(3)
self.assertEqual(expected, actual)
def test_rotate_minus_len(self):
expected = Deque().from_iterable([0, 1, 2, 3, 4])
actual = Deque().from_iterable(range(5))
actual.rotate(-len(actual))
self.assertEqual(expected, actual)
