R Under development (unstable) (2024-03-11 r86098 ucrt) -- "Unsuffered Consequences"
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> library(dplyr)

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

> library(purrr)
> library(testthat)

Attaching package: 'testthat'

The following object is masked from 'package:purrr':

    is_null

The following object is masked from 'package:dplyr':

    matches

> library(lubridate)

Attaching package: 'lubridate'

The following objects are masked from 'package:base':

    date, intersect, setdiff, union

> library(cropgrowdays)
> 
> test_check("cropgrowdays")
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 55 ]
> 
> ## Notes on this file: test/testthat.R
> 
> ## above generated automatically and seem to work very nicely
> ## ess-r-devtools-test-package   C-c C-w C-t, C-c C-w t
> ##   Interface for `devtools::test()'.
> ## ESS seems to run tests just fine as long as they are in
> ## tests/testthat/
> ##
> ## See  either https://r-pkgs.org/tests.html or
> ##https://debruine.github.io/tutorials/your-first-r-package-with-unit-tests.html
> ## Need to put test files in ./tests/testthat directory not ./tests
> ## Now just need to write the tests correctly ;-) !! EXCEPT seems to have
> ##  trouble finding 'purrr' even though it is part of tidyverse
> 
> proc.time()
   user  system elapsed 
   2.01    0.31    2.32