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: authorizer_test.rb
    path of file: ./repos/SimonSays/test/simon_says
    
    the code of the file until where you have to start completion: require 'test_helper'

class AuthorizerTest < ActiveSupport::TestCase
  setup do
    @controller = 
    
  def with_params(params)
    default_params = @controller.params
    @controller.params = params

    yield

  ensure
    @controller.params = default_params
  end