thisisnic commented on pull request #11105:
URL: https://github.com/apache/arrow/pull/11105#issuecomment-921279899


   > behavior of the %S flag is different in arrow
   
   So, the R "%S" returns an integer, so you're right in highlighting the 
difference between Arrow and R.  We have other time-related functions which 
return slightly different values, which we allow for, e.g.
   
   
https://github.com/apache/arrow/blob/5260fd5970d34c62e0ae7680f606b29eab56d96b/r/tests/testthat/test-dplyr-lubridate.R#L155-L164
   
   The function `expect_dplyr_equal()`, as you've pointed out, won't work on 
Array objects.  However, you could write a test like the one shown above, which 
just adds a tolerance (given that the user is being returned a *more* precise 
answer than they would have, the tolerance is justified).
   
   


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