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testthat mask potential bug of not import %>% from magrittr

Posted on One min read

magrittr is a wonderful package, but the biggest drawback is that you can’t write magrittr::%>%.

That can cause great pain in package development, I spend a whole morning to debug.

Basically, I summary the following rules:

  • testthat ignores .Rprofile
  • In theory, every pipe operator used must be imported from magrittr
  • except for %>% (testthat import and export it)
testthat::`%>%`

function (lhs, rhs) 
{
    lhs <- substitute(lhs)
    rhs <- substitute(rhs)
    kind <- 1L
    env <- parent.frame()
    lazy <- TRUE
    .External2(magrittr_pipe)
}
<bytecode: 0x55f41f0b2c58>
<environment: namespace:magrittr>