def test_invalid_sizes_or_offsets(self):
window = BufferContentWindow(1, b'abcd')
with self.assertRaises(AssertionError):
window.get(1, 5)
with self.assertRaises(AssertionError):
window.get(0, 1)
with self.assertRaises(AssertionError):
window.get(5, 1)
def test_nonzero_position(self):
window = BufferContentWindow(1, b'abc')
self.assertEqual(window.get(1, 3), b'abc')
self.assertEqual(window.get(2, 2), b'bc')
def test_zero_position(self):
window = BufferContentWindow(0, b'xyyy')
self.assertEqual(window.get(1, 3), b'yyy')