Now add another testthat::test_that block called "default values". You should see output like: Loading demopckg You can test more values than these, but we'll start with just these two.Īfter you save this file, run devtools::test().
We're going to check two expectations, that we'll get the error message "p cannot be less than 0" if p = -1, and that we'll get the error message "p cannot be greater than 1" id p = 2.
The first set we're going to make checks if we get the error messages we expect, so we've called it "errors". The test_that function checks a groups of expectataions. The context function lets you know what function you're testing when you run all the unit tests in a package.
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