Prints a list of tests that take too long.

gem install minitest-snail

Minitest Snail can be enabled from the command line using the max-duration parameter:

ruby test/example_test.rb --max-duration 2

This would print out a list of any tests taking longer than 2 seconds to run:

# Running:

....

Finished in 5.001143s

4 runs, 7 assertions, 0 failures, 0 errors, 0 skips

2 slow tests.
  0) ExampleTest#test_alpha: 2.30 s
  1) ExampleTest#test_beta: 2.11 s

If you don't run your tests directly, you can programmatically enable Minitest Snail:

Minitest::SnailReporter.enable!

You can also configure it using enable!:

Minitest::SnailReporter.enable! :max_duration => 2.5

If you are using Rails, your test/test_helper.rb file is good place to do this initialization.

Adam Sanderson (http://monkeyandcrow.com)