service_validation.rb

require 'csv'
require 'json'
require 'net/http'

class ServiceValidator
  @url = 'http://medicare.gov/physiciancompare/(X(1)S(tposse1fuc432hcyz5boheok))/services/PhysicianCompare.svc/GetSymptomSpecialties?symptomid=279&bodypartid=1&selected=M&AspxAutoDetectCookieSupport=1'
  def validate
    call_service
    parse_expected_response
    validate_response
  end

  def call_service
    raw_response = Net::HTTP.get(@url)
    @response = JSON.parse(raw_response)
  end

  def parse_expected_response
    CSV.read('services_test.csv')
    #return an array of expected responses for each node. 
  end

  def validate_response
    @response.each do |resp|
      value_at_node_for_request(resp) == value_at_node_for_response(parse_expected_response)
    end
  end
end