r - How do you turn off colored text in testthat? -

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i use package colorout color output in r (i don't use rstudio). when running tests in testthat prints out in color interfering colorout package printing lot of color codes.

here example of output:

r> library(colorout) r> devtools::test() loading mypackage testing mypackage 1;32m.0m1;32m.0m1;32m.0m

how can turn off coloring in testthat?

found there option this: 

options(testthat.use_colours = false)

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