R Under development (unstable) (2026-02-14 r89420 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(gstudio)
> test_check( "gstudio" )
?[ FAIL 0 | WARN 0 | SKIP 4 | PASS 607 ]

══ Skipped tests (4) ═══════════════════════════════════════════════════════════
• empty test (4): 'test-as_data_frame.R:8:1', 'test-dist_ss.R:4:1',
  'test-make_populations.R:34:1',

[ FAIL 0 | WARN 0 | SKIP 4 | PASS 607 ]
> 
> proc.time()
   user  system elapsed 
  12.06    0.82   13.04