Test negative enum values

[Saancreed]

:see_no_evil:

[github-actions[bot]]

Test Results

  2 files  ±0    2 suites  ±0   46s :stopwatch: ±0s  82 tests ±0   82 :white_check_mark: ±0  0 :zzz: ±0  0 :x: ±0  178 runs  ±0  178 :white_check_mark: ±0  0 :zzz: ±0  0 :x: ±0 

Results for commit 0b152140. ± Comparison against base commit 5728040f.