a sample output.txt

$ ruby test.rb 
Run options: --seed 42213

# Running:

running setup
925762681343
running setup
691270111299
.running setup
154289023867
.running setup
339104904288
.running setup
460241880229
.running setup
542847517027
.running setup
.931813584546
running setup
.500590298491
running setup
.384874554551
.running setup
637513522498
.running setuprunning setup

839613003719
884273880029
.running setup
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running setup
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running setup
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running setup
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running setup
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running setup
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running setup
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running setup
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running setup
.417001097868
running setup
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running setup
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running setup
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running setup
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running setup
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running setup
.631158146453
running setup
.454936963409
running setup
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running setup
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running setup
.147052927287
running setup.
running setup
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.running setup
.111830961123
running setup
.811393320188
running setup
.350914174293
running setup
.891580896969
running setup
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running setup
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running setup
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.running setup
.306845721159
running setup
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running setup
.719514354580
running setup
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.296837610769
running setup
.890838216292
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running setup
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running setup
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running setup
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running setup
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running setup
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.973150736165
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.running setup
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25063213078
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.391803354342
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running setup
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running setup
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running setup
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.

Finished in 0.007404s, 13507.0995 runs/s, 0.0000 assertions/s.

100 runs, 0 assertions, 0 failures, 0 errors, 0 skips

test.rb

require 'minitest/autorun'

class TestBlog < Minitest::Test
    
  parallelize_me!

  def setup
    puts "running setup"
    @random = rand(1000000000000)
  end
  
  # defines tests called test_1, test_2, ..., test_100 which all print state of @random
  100.times do |x|
     define_method "test_#{x}" do
         puts @random
     end
  end

end