ref: 9afcafd33a81fc6c1f1134ed7c3580964b2d5e3b dir: /tests/Enum.ref/
[1,2,3,4,5] [1] [] [1,3,5,7,9] [1,-1,-3,-5] [1,2,3,4,5] [1,3,5,7,9]