Cucumber 找不到已安装的 gem

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 会出现缺少 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 gem 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)

更令人困惑的部分是它只抱怨某些 gem。 factory_girl 和 rspec 不会引起问题。

知道发生了什么事吗？

---

我的环境：

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

Answer 1

好吧，我想通了（在 aslakhellesoy 的帮助下，谢谢！）。当 Cucumber 说缺少这些必需的 gems 时，它也可能意味着无法加载这些必需的 gems。这增加了所有可能的错误。

在这种情况下，gems 名称（rspec-rails 除外）与 require 的相应库文件不匹配。例如，应该有 :lib =>; 'selenium' 添加到 config.gem 'selenium-client'。

至于 rspec-rails，由于测试单元版本错误而无法加载： Gem::LoadError: RubyGem version error: test-unit(2.0.7 not = 1.2.3) 。如果 cucumber 首先报告此错误（我从控制台要求 rspec-rails 得到它），那将会有很大帮助。

Answer 2

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

如果你这样做，那就错了。 test-unit gem 没有 test-unit.rb 文件，因此 require 'test-unit' 总是会失败。尝试删除 require 行，或者至少尝试要求正确的文件：

require 'test/unit'

我不确定您为什么要尝试显式加载测试单元。