def assert_it(message)
      $stderr.puts("Assertion failed: " + message.to_s)
      $stderr.puts("at: ")
      caller.each { |trace| $stderr.puts trace }
    end
def assert_it(message)
      $stderr.puts("Assertion failed: " + message.to_s)
      $stderr.puts("at: ")
      caller.each { |trace| $stderr.puts trace }
    end
The action