require 'minitest/unit' class MiniTestEqual < MiniTest::Unit::TestCase def test_equal assert_equal 1, 1 end end 30.times do |i| Object.const_set("MiniTestSleep#{i}", Class.new(MiniTest::Unit::TestCase) do define_method('test_sleep') do start = Time.now sleep(0.25) assert_in_delta Time.now-start, 0.25, 0.02 end end) end class MiniTestFailure < MiniTest::Unit::TestCase def test_fail assert_equal 0, 1 end end