def test_segment_list():
values = [5, 1, 3, 2, 4, 8, 6, 7, 9, 0]
sl = SegmentList(values)
assert list(sl) == values
sl.sort()
assert list(sl) == list(range(10))
sl.reverse()
assert list(sl) == list(reversed(range(10)))
sl.reverse()
sl.append(10)
assert list(sl) == list(range(11))
sl.extend(range(11, 15))
assert list(sl) == list(range(15))
del sl[5:]
assert list(sl) == list(range(5))
sl[2] = 'c'
sl.insert(3, 'd')
sl.insert(6, 'e')
assert list(sl) == [0, 1, 'c', 'd', 3, 4, 'e']
