R Under development (unstable) (2025-02-08 r87709 ucrt) -- "Unsuffered Consequences"
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> # Copyright (C) 2020  Momoko Hayamizu <hayamizu@ism.ac.jp>
> #
> # This program is free software: you can redistribute it and/or modify
> # it under the terms of the GNU General Public License as published by
> # the Free Software Foundation, either version 3 of the License, or
> # (at your option) any later version.
> #
> # This program is distributed in the hope that it will be useful,
> # but WITHOUT ANY WARRANTY; without even the implied warranty of
> # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> # GNU General Public License for more details.
> #
> # You should have received a copy of the GNU General Public License
> # along with this program.  If not, see <http://www.gnu.org/licenses/>.
> 
> library(testthat)
> library(treefit)
> 
> test_check("treefit")
[ FAIL 0 | WARN 0 | SKIP 1 | PASS 12 ]

══ Skipped tests (1) ═══════════════════════════════════════════════════════════
• On CRAN (1): 'test-treefit.R:143:3'

[ FAIL 0 | WARN 0 | SKIP 1 | PASS 12 ]
> 
> proc.time()
   user  system elapsed 
   4.60    0.67    5.28