R Under development (unstable) (2024-07-28 r86931 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(cv)
Loading required package: doParallel
Loading required package: foreach
Loading required package: iterators
Loading required package: parallel
> 
> test_check("cv")
[ FAIL 0 | WARN 0 | SKIP 7 | PASS 9 ]

══ Skipped tests (7) ═══════════════════════════════════════════════════════════
• On CRAN (7): 'test-cv.R:64:3', 'test-cv.R:70:3', 'test-cv.R:82:3',
  'test-cv.R:89:3', 'test-cv.R:100:5', 'test-cv.R:106:5', 'test-cv.R:113:5'

[ FAIL 0 | WARN 0 | SKIP 7 | PASS 9 ]
> 
> proc.time()
   user  system elapsed 
   7.46    0.78    8.25