R Under development (unstable) (2024-05-22 r86590 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> source("helper/helper.R")
> 
> if (exists("file.mode", envir = baseenv())) {
+   f = get("file.mode", envir = baseenv())
+   expect_same = makeCompareFun(f, backports:::file.mode)
+ 
+   expect_same(R.home())
+   expect_same(file.path(R.home(), "COPYING"))
+ }
> 
> proc.time()
   user  system elapsed 
   0.21    0.10    0.31