test rails 3, ruby 1.8.7's method

i want to test a method created to returns data:

Routes.rb

resources :foos do
  member do
    get "method"
  end
end

controller.rb

class FoosController < ApplicationController
  def method(var)
    instance = One::Two::Instance.new
    get = instance.get var #var is a string
  end

i don't know how to proceed, test or anything from here. i've seen one testing by sending params through the address bar of the browser, i don't have a view for this mehod(is it necessary?). i don't know how to send params from the form either.

thx for your attention