def test_BothTraversal_set(): assert b.BothTraversal().set(['1', '2'], 4) == [4, 4]
def test_lens_and(): my_lens = b.BothTraversal() & b.GetitemLens(1) assert my_lens.set([(0, 1), (2, 3)], 4) == [(0, 4), (2, 4)]
def test_BothTraversal_view(): assert b.BothTraversal().view(['1', '2']) == '12'