A very powerful testing library.

epitest.rb

class EpiTest

  def self.inherited(base)
    at_exit { base.new.run_my_tests_bitch! }
  end

  class Fail < Exception; end

  def assert(thing)
    raise Fail.new(caller_locations[0]) unless thing
  end

  def run_my_tests_bitch!
    puts "#{self.class.name}"
    puts "--------------------------"

    methods.grep(/^test/).each do |method|
      puts "testing: #{method}"
      begin
        send(method)
        puts "  => PASS"
      rescue Fail => e
        puts "  => FAIL: #{e}"
      end
    end
    puts
  end

end

test_epitest.rb

require_relative 'epitest'

class Test < EpiTest

  def test_passage
    assert true
  end

  def test_failure
    assert false
  end

end

zz---output---zz

Test
--------------------------
testing: test_passage
  => PASS
testing: test_failure
  => FAIL: /home/epi/code/epitest/test_epitest.rb:10:in `test_failure'