单元测试Rails应用程序的控制器辅助模块-如何?

假设你有 app/helpers/address_helper.rb :

module AddressHelper
  def full_address(address)
    "#{address.street} #{address.house_number}/#{address.local_number}"
  end
end

你可以在下面写规范 spec/helpers/address_helper_spec.rb :

require 'spec/spec_helper' #or something similar, in order to load spec helper

describe AddressHelper do
  describe "#full_address" do
    it "displays the street, local and house number" do
      address = stub('Address', :street => 'Mountain View', :house_number => '7', :local_number => '44')
      helper.full_address(address).should eql('Mountain View 7/44')
    end 
  end
end

这里的钥匙是 helper 方法,使您可以访问帮助器方法,在本例中为:

helper.full_address(address)