May 29 2015
1 min

testthat 0.10.0

testthat 0.10.0 is now available on CRAN. Testthat makes it easy to turn the informal testing that you’re already doing into formal automated tests. Learn more at http://r-pkgs.had.co.nz/tests.html. Install the latest version with:

install.packages("testthat")

There are four big changes in this release:

  • test_check() uses a new reporter specifically designed for R CMD check. It displays a summary at the end of the tests, designed to be <13 lines long so test failures in R CMD check display are as useful as possible.

  • New skip_if_not_installed() skips tests if a package isn’t installed: this is useful if you want tests to skip if a suggested package isn’t installed.

  • The expect_that(a, equals(b)) style of testing has been soft-deprecated in favour of expect_equals(a, b). It will keep working, but it’s no longer demonstrated in the documentation, and new expectations will only be available in expect_equal(a, b) style.

  • compare() is now documented and exported: compare is used to display test failures for expect_equal(), and is designed to help you spot exactly where the failure occured. It currently has methods for character and numeric vectors.

There were a number of other minor improvements and bug fixes. See the release notes for a complete list.

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