R Under development (unstable) (2024-03-24 r86185 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> library(testthat)
> library(plumber)
> 
> test_check("plumber")
[ FAIL 0 | WARN 1 | SKIP 16 | PASS 1959 ]

══ Skipped tests (16) ══════════════════════════════════════════════════════════
• On CRAN (14): 'test-cookies.R:47:3', 'test-deprecated.R:60:3',
  'test-find-port.R:25:3', 'test-find-port.R:41:3', 'test-options.R:22:3',
  'test-plumber-print.R:2:3', 'test-plumber-print.R:60:3',
  'test-plumber.R:67:3', 'test-serializer-device.R:26:1',
  'test-serializer-htmlwidgets.R:18:3', 'test-static.R:23:3',
  'test-zzz-openapi.R:254:3', 'test-zzz-plumb_api.R:10:3',
  'test-zzz-plumb_api.R:65:3'
• On Windows (2): 'test-endpoint-aroundexec.R:131:3', 'test-legacy.R:19:3'

[ FAIL 0 | WARN 1 | SKIP 16 | PASS 1959 ]
> 
> proc.time()
   user  system elapsed 
  17.35    1.25   19.50