R Under development (unstable) (2025-08-18 r88641 ucrt) -- "Unsuffered Consequences"
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> library(testthat)
> library(mathml)
Loading required package: rolog
Found SWI-Prolog at D:/temp/2025_08_19_10_10_17_30612/Rtmp4YodLS/RLIBS_2b14421487f4e/rswipl/swipl
Welcome to SWI-Prolog (threaded, 64 bits, version 9.3.21)
Loading required package: knitr
> 
> test_check("mathml")
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 162 ]
> 
> proc.time()
   user  system elapsed 
   3.42    1.03    4.57