class Protest::Reports::Progress

The :progress report will output a . for each passed test in the suite, a P for each pending test, an F for each test that failed an assertion, and an E for each test that raised an unrescued exception.

At the end of the suite it will output a list of all pending tests, with files and line numbers, and after that a list of all failures and errors, which also contains the first 3 lines of the backtrace for each.