R version 4.4.0 alpha (2024-04-02 r86304 ucrt)
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Platform: x86_64-w64-mingw32/x64

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

══ Skipped tests (1) ═══════════════════════════════════════════════════════════
• On CRAN (1): 'test-core.R:4:3'

[ FAIL 0 | WARN 0 | SKIP 1 | PASS 0 ]
> 
> proc.time()
   user  system elapsed 
   0.82    0.25    1.06