This is the most useful reporting reporter as it lets you know both which
tests have run successfully, as well as fully reporting information about
failures and errors. It is the default reporting reporter used by
test_dir and test_file.
Usage
SummaryReporter
Format
An object of class R6ClassGenerator of length 24.
Details
You can use the max_reports field to control the maximum number
of detailed reports produced by this reporter. This is useful when running
with auto_test
As an additional benefit, this reporter will praise you from time-to-time
if all your tests pass.