R version 4.6.0 RC (2026-04-22 r89945 ucrt) -- "Because it was There"
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Platform: x86_64-w64-mingw32/x64

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> library(testthat)
> library(janusplot)
> 
> test_check("janusplot")
Starting 2 test processes.
[ FAIL 0 | WARN 0 | SKIP 12 | PASS 257 ]

══ Skipped tests (12) ══════════════════════════════════════════════════════════
• On CRAN (12): 'test-derivatives.R:307:1', 'test-derivatives.R:318:1',
  'test-snapshot.R:6:1', 'test-snapshot.R:15:1', 'test-snapshot.R:19:1',
  'test-snapshot.R:23:1', 'test-vdiffr.R:8:1', 'test-vdiffr.R:13:1',
  'test-vdiffr.R:19:1', 'test-vdiffr.R:26:1', 'test-vdiffr.R:32:1',
  'test-vdiffr.R:38:1'

[ FAIL 0 | WARN 0 | SKIP 12 | PASS 257 ]
> 
> proc.time()
   user  system elapsed 
   1.64    0.15   32.31