R Under development (unstable) (2023-10-31 r85451 ucrt) -- "Unsuffered Consequences"
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> # tests to run on CI servers (e.g. Github Actions)
> if (tolower(Sys.getenv('CI')) == 'true') testit::test_pkg('xfun', 'test-ci')
> 
> proc.time()
   user  system elapsed 
   0.15    0.04    0.18