advRkoans is an interactive tutorial for learning advanced R programming by making tests pass. Following the lessons from Hadley Wickham's Advanced R. Format inspired by Greg Malcom's Python Koans, which are in turn inspired by Edgecase's Ruby Koans.
pgcudahy$ git clone https://github.com/pgcudahy/advRkoans
pgcudahy$ cd advRkoans
pgcudahy$ R
> devtools::load_all()
> walk_the_path()
══ Thinking about expectations ═════════════════════════════════════════════════
expect truth has damaged your karma
You have not yet reached enlightenment ...
-=> TRUE OR FALSE? <=- isn't true.
Please meditate on the following code:
/Users/pgcudahy/advRkoans/inst/koans/about-expectations.R#5:1
testthat::expect_true(`___`)
You have completed 0 (0%) koans and 0 (out of 3) lessons.
You are now 16 koans and 3 lessons away from reaching enlightnment
>
Most tests are fixed by opening the file with the test error in a text editor
and filling in the missing parts of expect functions. Eg:
testthat::expect_equal(`__`, 1+2)
which can be fixed by replacing the `__` part with the appropriate code:
testthat::expect_equal(3, 1+2))