我如何指定 before_filters? [英] How can I spec before_filters?

问题描述

我想用 rspec 指定我的控制器 before_filter.我想为它使用 ActionController::Testing::ClassMethods#before_filters.

I want to spec my controllers before_filter with rspec. I thought to use ActionController::Testing::ClassMethods#before_filters for it.

我在 rails c 中得到了这些结果:

I got these results in my rails c:

2.0.0p353 :006 > ActionController::Base.singleton_class.send :include, ActionController::Testing::ClassMethods
2.0.0p353 :003 > EquipmentController.before_filters

=> [:process_action, :process_action]

=> [:process_action, :process_action]

但实际上这是我操作的过滤器:

But in reality this is the filter on my action:

class EquipmentController < ApplicationController
  before_filter :authenticate_user!

有什么想法吗?

推荐答案

这是我在我的项目中所做的:

This is what I did in my project:

# spec/support/matchers/have_filters.rb
RSpec::Matchers.define :have_filters do |kind, *names|
  match do |controller|
    filters = controller._process_action_callbacks.select{ |f| f.kind == kind }.map(&:filter)
    names.all?{ |name| filters.include?(name) }
  end
end

# spec/support/controller_macros.rb
module ControllerMacros
  def has_before_filters *names
    expect(controller).to have_filters(:before, *names)
  end
end

# spec/spec_helper.rb
RSpec.configure do |config|
  config.include ControllerMacros, type: :controller
end

然后你可以在控制器规范中使用它，例如:

and then you can just use it in controller specs like:

# spec/controllers/application_controller_spec.rb
require 'spec_helper'
describe ApplicationController do
  describe 'class' do
    it { has_before_filters(:authenticate_user) }
  end
end

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