R Under development (unstable) (2025-05-27 r88249 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(slopes)
> 
> test_check("slopes")
Loading required namespace: raster
Maximum distance is > 100km. The 'cheap' measure is inaccurate over such
large distances, you'd likely be better using a different 'measure', 
one of 'haversine', 'vincenty', or 'geodesic'. 
[ FAIL 0 | WARN 1 | SKIP 2 | PASS 38 ]

══ Skipped tests (2) ═══════════════════════════════════════════════════════════
• Skipping test, MAPBOX token in .Renviron needed (2): 'test-get.R:2:3',
  'test-slopes.R:75:3'

[ FAIL 0 | WARN 1 | SKIP 2 | PASS 38 ]
> 
> proc.time()
   user  system elapsed 
   5.25    0.32    5.57