R Under development (unstable) (2023-11-20 r85569 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(bslib)

Attaching package: 'bslib'

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

    page

> 
> test_check("bslib")
Starting 2 test processes
[ FAIL 0 | WARN 0 | SKIP 29 | PASS 469 ]

══ Skipped tests (29) ══════════════════════════════════════════════════════════
• On CRAN (29): 'test-zzzz-bs-sass.R:4:3', 'test-zzzz-bs-sass.R:26:3',
  'test-zzzz-bs-sass.R:51:3', 'test-zzz-precompile.R:18:3',
  'test-bs-theme-preset-builtin.R:5:5', 'test-bs-theme-preset.R:7:5',
  'test-bs-theme-preset.R:14:5', 'test-bs-theme-preset.R:34:5',
  'test-fill.R:31:3', 'test-fill.R:48:3', 'test-fill.R:65:3',
  'test-fill.R:96:3', 'test-fill.R:115:3', 'test-fill.R:148:3',
  'test-fill.R:160:3', 'test-fill.R:191:3', 'test-fill.R:216:3',
  'test-fill.R:248:3', 'test-fill.R:261:3', 'test-fill.R:304:3',
  'test-layout.R:2:3', 'test-layout.R:50:3', 'test-layout.R:68:3',
  'test-layout.R:128:3', 'test-layout.R:134:3', 'test-page.R:68:3',
  'test-page.R:90:5', 'test-value-box.R:56:3', 'test-value-box.R:106:3'

[ FAIL 0 | WARN 0 | SKIP 29 | PASS 469 ]
Deleting unused snapshots:
• page/card.html
• page/modern-page.html
• zzzz-bs-sass/bs4-imports
• zzzz-bs-sass/bs5-imports
> 
> proc.time()
   user  system elapsed 
   2.25    0.26   25.84