黄瓜无法找到已安装的宝石库。

Question

environment/cucumber.rb:

...
# gem dependencies
config.gem 'cucumber-rails',   :lib => false, :version => '>=0.3.0' unless File.directory?(File.join(Rails.root, 'vend
config.gem 'database_cleaner', :lib => false, :version => '>=0.5.0' unless File.directory?(File.join(Rails.root, 'vend
config.gem 'webrat',           :lib => false, :version => '>=0.7.0' unless File.directory?(File.join(Rails.root, 'vend

config.gem 'spork',            :lib => false, :version => '>=0.7.5' unless File.directory?(File.join(Rails.root, 'vend

config.gem 'factory_girl', :source => 'http://gemcutter.org'
config.gem 'selenium-client', :lib => false
config.gem 'Selenium', :lib => false
config.gem 'rspec', :lib => 'spec'
config.gem 'rspec-rails', :lib => 'spec/rails'
config.gem 'test-unit', :lib => false

运行 Cucumber 时出现了缺少 gem 的错误：

artem:~/projects/food4feed (master)$ cucumber
...
no such file to load -- Selenium
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/polyglot-0.3.0/lib/polyglot.rb:65:in `require'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:158:in `require'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/rspec-rails-1.3.2/lib/spec/rails.rb:13:in `<top (required)>'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/polyglot-0.3.0/lib/polyglot.rb:65:in `require'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/polyglot-0.3.0/lib/polyglot.rb:65:in `require'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:158:in `require'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/rails-2.3.5/lib/rails/gem_dependency.rb:208:in `load'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/rails-2.3.5/lib/initializer.rb:307:in `block in load_gems'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/rails-2.3.5/lib/initializer.rb:307:in `each'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/rails-2.3.5/lib/initializer.rb:307:in `load_gems'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/rails-2.3.5/lib/initializer.rb:169:in `process'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/rails-2.3.5/lib/initializer.rb:113:in `run'
/home/artem/projects/food4feed/config/environment.rb:9:in `<top (required)>'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/polyglot-0.3.0/lib/polyglot.rb:65:in `require'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/polyglot-0.3.0/lib/polyglot.rb:65:in `require'
/home/artem/projects/food4feed/features/support/env.rb:12:in `block in <top (required)>'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/spork-0.8.1/lib/spork.rb:23:in `prefork'
/home/artem/projects/food4feed/features/support/env.rb:10:in `<top (required)>'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/polyglot-0.3.0/lib/polyglot.rb:65:in `require'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/polyglot-0.3.0/lib/polyglot.rb:65:in `require'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/cucumber-0.6.3/lib/cucumber/rb_support/rb_language.rb:124:in `load_code_file'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/cucumber-0.6.3/lib/cucumber/step_mother.rb:85:in `load_code_file'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/cucumber-0.6.3/lib/cucumber/step_mother.rb:77:in `block in load_code_files'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/cucumber-0.6.3/lib/cucumber/step_mother.rb:76:in `each'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/cucumber-0.6.3/lib/cucumber/step_mother.rb:76:in `load_code_files'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/cucumber-0.6.3/lib/cucumber/cli/main.rb:48:in `execute!'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/cucumber-0.6.3/lib/cucumber/cli/main.rb:20:in `execute'
/home/artem/.rvm/gems/ruby-1.9.1-p378/gems/cucumber-0.6.3/bin/cucumber:8:in `<top (required)>'
/home/artem/.rvm/gems/ruby-1.9.1-p378/bin/cucumber:19:in `load'
/home/artem/.rvm/gems/ruby-1.9.1-p378/bin/cucumber:19:in `<main>'
Missing these required gems:
  selenium-client
  Selenium
  rspec-rails

You're running:
  ruby 1.9.1.378 at /home/artem/.rvm/rubies/ruby-1.9.1-p378/bin/ruby
  rubygems 1.3.5 at /home/artem/.rvm/gems/ruby-1.9.1-p378, /home/artem/.rvm/gems/ruby-1.9.1-p378%global

所有的宝石显然都在那里:

artem:~/projects/food4feed (master)$ gem list | egrep "elenium|rspec|test-unit"
rspec (1.3.0)
rspec-rails (1.3.2)
Selenium (1.1.14)
selenium-client (1.2.18)
test-unit (2.0.7)

更令人困惑的是，它只对某些 gem 抱怨。 factory_girl 和 rspec 没有引起问题。

你有什么想法吗？

---

我的环境：

• Rails 2.3.5
• cucumber (0.6.3)
• cucumber-rails (0.3.0)

- artemave

Answer 1

好的，我想通了（在aslakhellesoy的帮助下，谢谢！）。 当cucumber说“Missing these required gems”时，它也可能意味着“Can't load these required gems”。这会导致可能出现的所有错误。

在这种情况下，宝石名称（除了rspec-rails）与要求的相应库文件不匹配。例如，应该在“config.gem 'selenium-client'”中添加“：lib => 'selenium'”。

至于rspec-rails，由于test-unit的错误版本，它无法加载：“Gem :: LoadError：RubyGem版本错误：test-unit（2.0.7 not = 1.2.3）”。如果cucumber一开始就报告了这个错误，那将非常有帮助（我是从控制台要求rspec-rails得到这个错误信息的）。

- artemave

Answer 2

你的config/environment.rb或features/support/env.rb文件中是否有require 'test-unit'语句？

如果有，那是错误的。test-unit gem没有test-unit.rb文件，因此require 'test-unit'将始终失败。尝试删除require语句，或者至少尝试要求正确的文件：

require 'test/unit'

我不确定为什么你要明确加载test-unit。

- Aslak Hellesøy

---

test-unit 是上述其中一个 gem 的依赖项。它只是为了让 rake gems:install RAILS_ENV=cucumber 安装它而存在的。 - artemave

更正！！更正！！ test-unit 实际上并不会引起问题，因为它是 :lib => false。这是我的错，我想我在第一次复制堆栈跟踪时复制了错误的内容（已纠正）。但是，这并不改变问题。 - artemave

你实际上指向了正确的方向。除了rspec-rails外，这都是关于gem / library名称不匹配的问题。谢谢！ - artemave