https://github.com/seattlerb/minitest/pull/391

output

$ ruby /tmp/ruby.rb -v
Run options: -v --seed 24668

# Running:

sleeping
TestReporting#test_slow = 1.00 s = .
sleeping
TestReporting#test_really_slow = 2.00 s = .

Finished in 3.001246s, 0.6664 runs/s, 0.6664 assertions/s.

2 runs, 2 assertions, 0 failures, 0 errors, 0 skips

ruby.rb

require 'minitest/autorun'
    
class TestReporting < Minitest::Test
  def test_slow
    puts "sleeping"
    sleep 1
    pass
  end
  
  def test_really_slow                                                                                
    puts "sleeping"
    sleep 2
    pass
  end
end