RSpec - 未定义的方法“key?" [英] RSpec - Undefined method `key?'

问题描述

我正在尝试为渲染模板运行测试并遇到错误:

I'm trying to run a test for rendering templates and ran into the error:

undefined method `key?' for 1014:Fixnum

我的模型实例的存根在我的路由测试中正常工作，但在这里没有那么多.我做错了什么?

The stub of my model's instance works as it should in my route tests but not so much here. What am I doing wrong?

describe RestaurantsController do
  let(:restaurant) { FactoryGirl.build_stubbed(:restaurant) }

  describe 'GET #show' do
    before { get :show, restaurant.id }

    it { should render_template('show') }
  end
end

完全错误

 1) RestaurantsController GET #show 
     Failure/Error: before { get :show, restaurant.id }
     NoMethodError:
       undefined method `key?' for 1014:Fixnum
     # /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.0/lib/action_controller/test_case.rb:744:in `html_format?'
     # /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.0/lib/action_controller/test_case.rb:598:in `process'
     # /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.0/lib/action_controller/test_case.rb:65:in `process'
     # /Library/Ruby/Gems/2.0.0/gems/devise-3.5.1/lib/devise/test_helpers.rb:19:in `block in process'
     # /Library/Ruby/Gems/2.0.0/gems/devise-3.5.1/lib/devise/test_helpers.rb:72:in `catch'
     # /Library/Ruby/Gems/2.0.0/gems/devise-3.5.1/lib/devise/test_helpers.rb:72:in `_catch_warden'
     # /Library/Ruby/Gems/2.0.0/gems/devise-3.5.1/lib/devise/test_helpers.rb:19:in `process'
     # /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.0/lib/action_controller/test_case.rb:505:in `get'
     # ./spec/controllers/restaurants_controller_spec.rb:15:in `block (3 levels) in <top (required)>'

推荐答案

get 执行操作和参数散列(除其他外).它不会隐式地将模型转换为 { id: model.to_param }.

get takes a action and hash of params (among other things). It will not implicitly take a model and turn it into { id: model.to_param }.

相反，您需要明确指定参数.

Instead you need to specify the parameters explicitly.

describe RestaurantsController do
  let(:restaurant) { create(:restaurant) }

  subject { response }

  describe 'GET #show' do
    before { get :show, id: restaurant }
    it { should render_template('show') }
  end
end

正如@Зелёный 已经提到的，您需要将记录实际保存到数据库中，以便能够在控制器规范中使用它.

As @Зелёный has already mentioned you need to actually persist the record to the database to be able to use it in a controller spec.

为避免重复问题和测试顺序问题，您应该在每个示例之间清空数据库.database_cleaner gem 对这项任务非常宝贵.

To avoid the duplication issue and test ordering issues you should empty the database between each example. The database_cleaner gem is invaluable for that task.

此外，如果您需要在同一个规范中创建多个记录，您可以在 factory girl 中使用序列:

Also if you need to create several records in the same spec you can use sequences in factory girl:

FactoryGirl.define do
  factory :user do
    email { |n| "test-#{n}@example.com" }
  end
end

gem ffaker 非常适合生成电子邮件、用户名等.

The gem ffaker is great for generating emails, usernames etc.

您可以通过在 rails_helper 中包含其方法来为 FactoryGirl 设置快捷方式:

You can setup shortcuts for FactoryGirl by including its methods in your rails_helper:

RSpec.configure do |config|
  # ...
  config.include FactoryGirl::Syntax::Methods
end

这使您可以使用 FactoryGirl 方法而无需像这样输入模块名称:

This lets you use the FactoryGirl methods without typing the module name like so:

let(:restaurant) { create(:restaurant) }

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