Question

我正在跟随Michael Hartl的“Ruby on Rails Tutorial 3rd Edition”。我在第3章，第一次尝试使用测试命令。

有两个非常基本的页面 - 家庭和帮助 - 只有文字。我认为以下测试应该检查页面是否存在：

sample_app/test/controllers/static-pages.rb

require 'test_helper'
 class StaticPagesControllerTest < ActionController::TestCase
   test "should get home" do
   get :home
   assert_response :success
 end

 test "should get help" do
   get :help
   assert_response :success
 end
end

但是，当我运行命令

时

$ bundle exec test rake

在终端窗口中，我收到一个以

开头的长错误

rake aborted!
NoMethodError: undefined method `web_console' for ActiveRecord::Base:Class

我已经阅读了各种似乎围绕着宝石文件的建议，尤其是“web-console”。我试过移动宝石有点无济于事但我愿意再试一次。这是当前的gem文件：

sample_app/Gemfile（已删除评论）

source 'https://rubygems.org'


gem 'rails', '4.2.2'

gem 'sqlite3'

gem 'sass-rails', '~> 5.0'

gem 'uglifier', '>= 1.3.0'

gem 'coffee-rails', '~> 4.1.0'

gem 'jquery-rails'

gem 'turbolinks'

gem 'jbuilder', '~> 2.0'

gem 'sdoc', '~> 0.4.0', group: :doc


gem 'web-console', group: :development

group :development do

  gem 'sqlite3'

  gem 'byebug'

  gem 'spring'

  gem 'guard'

  gem 'guard-minitest'
end


group :test do

  gem 'minitest-reporters'

  gem 'mini_backtrace'



end

如果您感兴趣，以下是完整的错误代码：

Running via Spring preloader in process 6353
rake aborted!
NoMethodError: undefined method `web_console' for ActiveRecord::Base:Class
/usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-4.2.2/lib/active_record/dynamic_matchers.rb:26:in `method_missing'
/home/ubuntu/workspace/sample_app/test/controllers/static_pages_controller_test.rb:16:in `<class:StaticPagesControllerTest>'
/home/ubuntu/workspace/sample_app/test/controllers/static_pages_controller_test.rb:5:in `<top (required)>'
/usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.2/lib/rails/test_unit/sub_test_task.rb:114:in `require'
/usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.2/lib/rails/test_unit/sub_test_task.rb:114:in `block (3 levels) in define'
/usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.2/lib/rails/test_unit/sub_test_task.rb:114:in `each'
/usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.2/lib/rails/test_unit/sub_test_task.rb:114:in `block (2 levels) in define'
/usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.2/lib/rails/test_unit/sub_test_task.rb:113:in `each'
/usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.2/lib/rails/test_unit/sub_test_task.rb:113:in `block in define'
/usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.2/lib/rails/test_unit/sub_test_task.rb:20:in `invoke_rake_task'
/usr/local/rvm/gems/ruby-2.3.0/gems/railties-4.2.2/lib/rails/test_unit/testing.rake:8:in `block in <top (required)>'
/usr/local/rvm/gems/ruby-2.3.0/gems/rake-12.0.0/exe/rake:27:in `<top (required)>'
/usr/local/rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `eval'
/usr/local/rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `<main>'
Tasks: TOP => test:run
(See full trace by running task with --trace)

Answer 1

我可能找到了答案：注销Cloud9。关掉电脑。重启电脑。重新登录Cloud9。输入“bundle exec rake test”。而且它是固定的。魔术！

更严重的是，我意识到我正在使用旧版本的教程，但教程确实指导学生以适合此版本的方式设置环境（我相信）。尽管如此，我确实看到Cloud9在某些时候发出警告，我使用的Ruby（2.3.0）版本是“buggy”并将其升级到2.3.1。我不知道Ruby 2.3.0的错误是否是Cloud9中的罪魁祸首或者是错误的，但对于使用旧版本教程的其他人来说，这是值得注意的。

“bundle exec rake test”“NoMethodError：未定义的方法`web_console'for ActiveRecord :: Base：Class”

1 个答案: