ruby-on-rails – Rails生成抛出Minitest错误？

我刚开始学习rails,我正在创建我的第一个项目.在我的Gemfile中,我添加了：

group :test,:development do
  gem 'turn'
  gem 'rspec-rails'
  gem 'capybara'
  gem 'guard-rspec'
  gem 'growl_notify'
end

并运行捆绑.到目前为止一切都很好.

我尝试运行rails g来查看我的软件包是否已安装,但我遇到了以下错误：

GarysMBA:glecto swally_1991$rails g
gem install minitest
/Library/Ruby/Gems/1.8/gems/turn-0.9.4/lib/turn/minitest.rb:9:in `require': no such file to load -- minitest/unit (LoadError)
    from /Library/Ruby/Gems/1.8/gems/turn-0.9.4/lib/turn/minitest.rb:9
    from /Library/Ruby/Gems/1.8/gems/turn-0.9.4/lib/turn.rb:13:in `require'
    from /Library/Ruby/Gems/1.8/gems/turn-0.9.4/lib/turn.rb:13
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `require'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `require'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `each'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `require'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `each'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `require'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.21/lib/bundler.rb:122:in `require'
    from /Users/swally_1991/Desktop/glecto/config/application.rb:13
    from /Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/commands.rb:24:in `require'
    from /Library/Ruby/Gems/1.8/gems/railties-3.2.3/lib/rails/commands.rb:24
    from script/rails:6:in `require'
    from script/rails:6

我搜索了我的配置,但我找不到任何地方对Minitest的引用？以前有人遇到过这个问题吗？或者可以指出我正确的方向固定它？

group :test do
  gem 'turn','< 0.8.3'
end