我在6个月前完成了Hartl的rubyonrailstutorial中的sample_app，然后把它放下了。我今天去运行它，现在我似乎在测试中遇到与“setup”功能相关的错误。有45个错误 - 我将在下面发布3个错误：
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'
这是 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
这是fixtures文件夹中的 microposts.yml 文件（你会注意到我用'thomas'代替'michael'：
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
这是 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
这是 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
这是 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
虽然Hartl一直声明我们应该使用教程中的确切gem版本，但我确实将ruby版本从2.1更新到2.2，并且我在我的gem文件中明确地调用它。
Ruby版本： ruby 2.2.1p85（2015-02-26修订版49769）[x86_64-darwin13]
Rails版本： Rails 4.2.0.beta4
系统：Mac OS X版本10.9.5
我最近在我的Mac上安装了mysql，但我没有在sample_app中使用它。 sample_app使用本教程中建议的sqlite。我确保当时没有运行mysql的实例。
语句“ArgumentError：错误的参数数量（1表示0）”在每个错误中都是一致的。此外，每个错误似乎都出现在“setup”方法中。
此应用程序在6个月前运行良好。关于我为什么会收到此错误的任何建议？
答案 0 :(得分：0)
问题在于＆＃39; sample_app＆＃39;中使用的Rails版本。为了公平对待Hartl，他反复声明我们应该使用配置＆amp;本教程中显示的gem版本。
我改变了
gem 'rails', '4.2.0.beta4’
到
gem 'rails', '4.2.1’
然后我跑了bundle update
我跑了bundle exec rake test，瞧！，没有错误。
这解决了我原帖中的错误问题，但后来收到了以下警告：
DEPRECATION WARNING：配置选项
config.serve_static_assets已重命名为config.serve_static_files澄清其作用（它只能实现 提供public文件夹中的所有内容，与...无关 资产管道）。将删除serve_static_assets别名 Rails 5.0。请相应地迁移配置文件。 （从座位中调用 [.....] / sample_app /配置/环境/ test.rb：16）
这需要更新/config/environments/test.rb文件。变
config.serve_static_assets = true
至
config.serve_static_files = true
有关解决方案的更多信息，请参阅以下链接： Hartl's sample_app warning on config.serve_static_files, and test already defined