ref: 9fcea2a5581d045efd60b6b6bd2b64ad6e4e9bd2 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]