ref: e58eace5b4c5f50e1e1a9b6dd0f8e04122478512 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]