從rubyonrailstutorial使用sample_app的所有測試中的錯誤

Question

大約6個月前，我從Hartl的rubyonrailstutorial完成了sample_app，然後把它放下。我今天去運行它，現在我似乎在我的測試中出現與「設置」功能有關的錯誤。有45個錯誤 - 下面我將他們發佈3：

ERROR["test_should_redirect_create_when_not_logged_in", MicropostsControllerTest, 2015-05-17 12:55:23 -0400] 
test_should_redirect_create_when_not_logged_in#MicropostsControllerTest (1431881723.02s) 
ArgumentError:   ArgumentError: wrong number of arguments (1 for 0) 
      test/controllers/microposts_controller_test.rb:6:in `setup' 
     test/controllers/microposts_controller_test.rb:6:in `setup' 

ERROR["test_should_redirect_destroy_for_wrong_micropost", MicropostsControllerTest, 2015-05-17 12:55:23 -0400] 
test_should_redirect_destroy_for_wrong_micropost#MicropostsControllerTest (1431881723.02s) 
ArgumentError:   ArgumentError: wrong number of arguments (1 for 0) 
      test/controllers/microposts_controller_test.rb:6:in `setup' 
     test/controllers/microposts_controller_test.rb:6:in `setup' 

ERROR["test_should_redirect_destroy_when_not_logged_in", MicropostsControllerTest, 2015-05-17 12:55:23 -0400] 
test_should_redirect_destroy_when_not_logged_in#MicropostsControllerTest (1431881723.03s) 
ArgumentError:   ArgumentError: wrong number of arguments (1 for 0) 
      test/controllers/microposts_controller_test.rb:6:in `setup' 
     test/controllers/microposts_controller_test.rb:6:in `setup' 

這裏是micropost_controller_test.rb：

require 'test_helper' 

class MicropostsControllerTest < ActionController::TestCase 

    def setup 
    @micropost = microposts(:orange) #THIS IS LINE 6 
    end 

    test "should redirect create when not logged in" do 
    assert_no_difference 'Micropost.count' do 
     post :create, micropost: { content: "Lorem ipsum" } 
    end 
    assert_redirected_to login_url 
    end 

    test "should redirect destroy when not logged in" do 
    assert_no_difference 'Micropost.count' do 
     delete :destroy, id: @micropost 
    end 
    assert_redirected_to login_url 
    end 

    test "should redirect destroy for wrong micropost" do 
    log_in_as(users(:thomas)) 
    micropost = microposts(:ants) 
    assert_no_difference 'Micropost.count' do 
     delete :destroy, id: micropost 
    end 
    assert_redirected_to root_url 
    end 

end 

這裏是microposts.yml文件中的夾具文件夾（你會注意到，我代替「邁克爾」與'托馬斯：

orange: 
    content: "I just ate an orange!" 
    created_at: <%= 10.minutes.ago %> 
    user: thomas 

tau_manifesto: 
    content: "Check out the @tauday site by @mhartl: http://tauday.com" 
    created_at: <%= 3.years.ago %> 
    user: thomas 

cat_video: 
    content: "Sad cats are sad: http://youtu.be/PKffm2uI4dk" 
    created_at: <%= 2.hours.ago %> 
    user: thomas 

most_recent: 
    content: "Writing a short test" 
    created_at: <%= Time.zone.now %> 
    user: thomas 

<% 30.times do |n| %> 
micropost_<%= n %>: 
    content: <%= Faker::Lorem.sentence(5) %> 
    created_at: <%= 42.days.ago %> 
    user: thomas 
<% end %> 

ants: 
    content: "Oh, is that what you want? Because that's how you get ants!" 
    created_at: <%= 2.years.ago %> 
    user: archer 

zone: 
    content: "Danger zone!" 
    created_at: <%= 3.days.ago %> 
    user: archer 

tone: 
    content: "I'm sorry. Your words made sense, but your sarcastic tone did not." 
    created_at: <%= 10.minutes.ago %> 
    user: lana 

van: 
    content: "Dude, this van's, like, rolling probable cause." 
    created_at: <%= 4.hours.ago %> 
    user: lana 

這裏是micropost.rb模型，

class Micropost < ActiveRecord::Base 
    belongs_to :user 
    default_scope -> { order(created_at: :desc) } 
    mount_uploader :picture, PictureUploader 
    validates :user_id, presence: true 
    validates :content, presence: true, length: { maximum: 140 } 
    validate :picture_size 

    private 

    # Validates the size of an uploaded picture. 
    def picture_size 
     if picture.size > 5.megabytes 
     errors.add(:picture, "should be less than 5MB") 
     end 
    end 
end 

這裏是microposts_controller.rb：

class MicropostsController < ApplicationController 
    before_action :logged_in_user, only: [:create, :destroy] 
    before_action :correct_user, only: :destroy 

    def create 
    @micropost = current_user.microposts.build(micropost_params) 
    if @micropost.save 
     flash[:success] = "Micropost created!" 
     redirect_to root_url 
    else 
     @feed_items = [] 
     render 'static_pages/home' 
    end 
    end 

    def destroy 
    @micropost.destroy 
    flash[:success] = "Micropost deleted" 
    redirect_to request.referrer || root_url 
    end 

    private 

    def micropost_params 
     params.require(:micropost).permit(:content, :picture) 
    end 

    def correct_user 
     @micropost = current_user.microposts.find_by(id: params[:id]) 
     redirect_to root_url if @micropost.nil? 
    end 
end 

這裏是gemfile.rb：

source 'https://rubygems.org' 
ruby '2.2.1' 

gem 'rails', '4.2.0.beta4'  #<<<THIS WAS THE PROBLEM. ANSWER BELOW 
gem 'bcrypt' 
gem 'faker', '1.4.2' 
#Items for image upload 
gem 'carrierwave',    '0.10.0' 
gem 'mini_magick',    '3.8.0' 
gem 'fog',      '1.23.0' 

gem 'will_paginate' 
gem 'bootstrap-will_paginate' 
gem 'bootstrap-sass' 
gem 'sass-rails', '5.0.0.beta1' 
gem 'uglifier', '2.5.3' 
gem 'coffee-rails', '4.0.1' 
gem 'jquery-rails', '4.0.0.beta2' 
gem 'turbolinks', '2.3.0' 
gem 'jbuilder', '2.2.3' 
gem 'rails-html-sanitizer', '1.0.1' 
# bundle exec rake doc:rails generates the API under doc/api. 
gem 'sdoc', '0.4.0',   group: :doc 


group :development, :test do 
    gem 'sqlite3' 
    gem 'spring' 
    gem 'byebug',  '3.4.0' 
    gem 'web-console', '2.0.0.beta3' 
end 

group :test do 
    gem 'minitest-reporters', '1.0.5' 
    gem 'mini_backtrace',  '0.1.3' 
    gem 'guard-minitest',  '2.3.1' 
end 

group :production do 
    gem 'pg',    '0.17.1' 
    gem 'rails_12factor', '0.0.2' 
    gem 'unicorn',    '4.8.3' 
end 

雖然哈特爾一貫規定我們應該從教程中使用精確的寶石版本，我更新了ruby版本離子從2.1到2.2，我明確地稱它在我的寶石文件。

紅寶石版本：紅寶石2.2.1p85（2015年2月26日修訂版49769）[x86_64的-darwin13]

的Rails版本：的Rails 4.2.0.beta4

系統： Mac OS X版本10.9.5

我最近安裝了mysql到我的Mac，但我沒有在sample_app中使用它。 sample_app按照本教程中的建議使用sqlite。我確保當時沒有運行mysql的實例。

語句「ArgumentError：錯誤的參數數量（1代表0）」在每個錯誤中都是一致的。另外，每個錯誤都出現在「setup」方法中。

這個應用程序工作正常6個月前。關於爲什麼我得到這個錯誤的任何建議？

Answer 1

問題出在'sample_app'中使用的Rails版本。爲了公平對待Hartl，他一再聲明我們應該使用教程中顯示的配置& gem版本。

我改變

gem 'rails', '4.2.0.beta4’ 

到

gem 'rails', '4.2.1’ 

然後我跑bundle update

我跑bundle exec rake test，並瞧！，沒有錯誤。 這解決了錯誤的問題在原來的職位，但後來我收到以下警告：

DEPRECATION WARNING: The configuration option config.serve_static_assets has been renamed to config.serve_static_files to clarify its role (it merely enables serving everything in the public folder and is unrelated to the asset pipeline). The serve_static_assets alias will be removed in Rails 5.0. Please migrate your configuration files accordingly. (called from block in at [.....]/sample_app/config/environments/test.rb:16)

這需要更新到/config/environments/test.rb文件。改變 config.serve_static_assets = true 到 config.serve_static_files = true

參見解決以下鏈接瞭解更多信息： Hartl's sample_app warning on config.serve_static_files, and test already defined