R version 4.6.0 alpha (2026-04-01 r89771 ucrt)
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Platform: x86_64-w64-mingw32/x64

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> source("helper/helper.R")
> 
> expect_true(isNamespaceLoaded("base"))
> expect_true(isNamespaceLoaded("backports"))
> expect_false(isNamespaceLoaded("..notexisting.."))
> 
> proc.time()
   user  system elapsed 
   0.12    0.04    0.15