def test_sorting_algorithm(self):
f = new_sorting_algorithm()
assert sorted(xs()) == f(xs())
def test_sorting_algorithm(self):
f = new_bubble_sort()
assert sorted(xs()) == f(xs())
decreasing_xs = [999, 10, 9, 8, 7, 6]
assert sorted(copy.copy(decreasing_xs)) == f(decreasing_xs)