R Under development (unstable) (2024-02-05 r85863 ucrt) -- "Unsuffered Consequences"
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> # Needed for subshells openend in tests, and does no harm otherwise.
> # See <https://github.com/hadley/testthat/issues/144> for details.
> Sys.setenv(R_TESTS = '')
> testthat::test_check('box')
Loading required package: box

Attaching package: 'box'

The following object is masked from 'package:utils':

    help

The following objects are masked from 'package:base':

    file, topenv, use

[ FAIL 0 | WARN 0 | SKIP 11 | PASS 581 ]

══ Skipped tests (11) ══════════════════════════════════════════════════════════
• On CRAN (4): 'test-rstudio.r:41:5', 'test-rstudio.r:61:5',
  'test-vignettes.r:30:5', 'test-z-attach.r:8:5'
• On Windows (3): 'test-file.r:94:5', 'test-find.r:93:5', 'test-find.r:98:5'
• Outside source code repository (3): 'test-file.r:18:5', 'test-file.r:69:5',
  'test-interactive.r:3:1'
• empty test (1): 'test-file.r:101:1'

[ FAIL 0 | WARN 0 | SKIP 11 | PASS 581 ]
> 
> proc.time()
   user  system elapsed 
   4.46    0.53    4.98