R Under development (unstable) (2025-01-31 r87670 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(mathml)
Loading required package: rolog
Found SWI-Prolog at D:/temp/2025_02_01_18_05_16_21651/Rtmp6LfKc4/RLIBS_12e044eb038f6/rswipl/swipl
Welcome to SWI-Prolog (threaded, 64 bits, version 9.3.18)
Loading required package: knitr
> 
> test_check("mathml")
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 141 ]
> 
> proc.time()
   user  system elapsed 
   3.53    0.59    4.10