ruby-on-rails - 我如何指定 before_filters？

Question

我想用 rspec 指定我的 Controller before_filter。我想为此使用 ActionController::Testing::ClassMethods#before_filters。

我在我的 rails c 中得到了这些结果:

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

=> [:process_action, :process_action]

但实际上这是我行动的过滤器:

class EquipmentController < ApplicationController
  before_filter :authenticate_user!

有什么想法吗？

Answer 1

这是我在我的项目中所做的:

# 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

然后您可以在 Controller 规范中使用它，例如:

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