You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: machine_test.rb
    path of file: ./repos/state_machines/test/unit/machine
    
    the code of the file until where you have to start completion: require 'test_helper'

class MachineTest < StateMachinesTest
  def test_should_raise_exception_if_invalid_option_specifi
    
  def test_should_evaluate_a_block_during_initialization
    called = true
    StateMachines::Machine.new(Class.new) do
      called = respond_to?(:event)
    end

    assert called
  end