Auto-load support files into your test helper

test_helper.rb

# test/test_helper.rb
ENV['RAILS_ENV'] ||= 'test'
require_relative '../config/environment'
require 'rails/test_help'

# Be sure to add this line to include all support files
Dir["#{File.dirname(__FILE__)}/support/**/*.rb"].each { |f| require f }

class ActiveSupport::TestCase
  # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
  fixtures :all

  # Add more helper methods to be used by all tests here...
end