ruby-on-rails - 请求规范中的 stub 方法错误

Question

我用 this book 学习了关于 RoR(Ruby-2.1，Rails 4.x)的 api 教程.

这是一本值得学习的好书，但我在第 5 章 的 rspec 测试中遇到了这个问题。 (请参阅该章中的 list 5.9。)

Failure/Error: authentication.stub<:request>.and_return<request>
#<Authentication:0x000000075fe220> does not implement: request

源代码:

class Authentication
  include Authenticable
end

describe Authenticable do
  let(:authentication) { Authentication.new }

  describe "#current_user" do
    before do
      @customer = FactoryGirl.create :customer
      request.headers["Authorization"] = @customer.auth_token
      authentication.stub(:request).and_return(request)
    end
    it "returns the user from the authorization header" do
      expect(authentication.current_user.auth_token).to eql @customer.auth_token
    end
  end
end

如何解决这个问题？

Answer 1

如果你想使用 rspec 3，也许你可以用这个替换代码:

规范/controllers/concerns/authenticable_spec.rb

require 'rails_helper'

class Authentication
  include Authenticable
end

describe Authenticable, :type => :controller do
  let(:authentication) { Authentication.new }

  describe "#current_user" do
    before do
      @user = FactoryGirl.create :user
      request.headers["Authorization"] = @user.auth_token
      allow(authentication).to receive(:request).and_return(request)
    end

    it "returns the user from the authorization header" do
      expect(authentication.current_user.auth_token).to eql @user.auth_token
    end
  end
end

app/controllers/concerns/authenticable.rb

module Authenticable
  # Devise methods overwrites
  def current_user
    @current_user ||= User.find_by(auth_token: request.headers['Authorization'])
  end

  def request
    request
  end
end

pdt:rspec stub Controller 辅助方法存在错误。更多引用 https://github.com/rspec/rspec-rails/issues/1076