R Under development (unstable) (2024-03-11 r86098 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(tf)

Attaching package: 'tf'

The following objects are masked from 'package:stats':

    sd, var

> 
> test_check("tf")
tf_zoom() with varying start or end points - converting to tfd.
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 436 ]
> 
> proc.time()
   user  system elapsed 
  11.79    0.68   12.46