Question

我第一次使用Rails 4（4.0.0）。

我对Cucumber的速度感到不满意。

我做了以下事情：

使用rails new MyApp -T创建了应用。
添加了rspec-rails，cucumber-rails，database_cleaner＆amp;对Gemfile进行therubyracer，然后运行bundle install。
启用rails generate rspec:install和rails generate cucumber:install。

我没有创建任何模型，控制器，视图，规格或功能。我正在进行双周期TDD并且针对没有功能运行cucumber，期望它花费不到几秒钟。然后我使用rake和bundle exec调用它并比较结果（如下所示）。

bundle exec cucumber

    noel@noel-U36JC:~/commons/MyApp$ time bundle exec cucumber
    Using the default profile...
    0 scenarios
    0 steps
    0m0.000s

    real    0m22.017s
    user    0m20.749s
    sys     0m1.044s

rake cucumber

    noel@noel-U36JC:~/commons/MyApp$ time rake cucumber
    /home/noel/commons/MyApp/db/schema.rb doesn't exist yet. Run `rake db:migrate` 
    to create it, then try again. If you do not intend to use a database, you 
    should instead alter /home/noel/commons/MyApp/config/application.rb to limit 
    the frameworks that will be loaded.

    real    0m18.556s
    user    0m17.329s
    sys     0m1.064s

cucumber

    noel@noel-U36JC:~/commons/MyApp$ time cucumber
    WARN: Unresolved specs during Gem::Specification.reset:
          rake (>= 0.8.7)
          hike (~> 1.2)
          tilt (!= 1.3.0, ~> 1.1)
    WARN: Clearing out unresolved specs.
    Please report a bug if this causes problems.
    Using the default profile...
    0 scenarios
    0 steps
    0m0.000s

    real    0m19.862s
    user    0m18.681s
    sys     0m1.028s

Gemfile.lock有

    ...
    hike (1.2.3)
    ...
    rake (10.1.0)
    ...
    tilt (1.4.1)
    ...

我无法找到Gem :: Specification.reset从哪里获取信息。我已经运行了gem cleanup和gem uninstall gemname 而且没有获得任何地方。

非常感谢任何帮助。

更新：忘了提，我在RVM上运行ruby 1.9.3-p484。我正在开发的lappy是2.5岁，ubuntu和amp; RVM一直在加载，所以RVM cruff也是一个因素。

更新（评论2后一小时）：

我尝试设置一个新的项目特定的RVM gemset，认为全局getset中的cruff可能是问题。

设置似乎有效。

在bundle install期间，rake的gem安装失败。没有快乐！

    noel@noel-U36JC:~/commons/MyApp$ rvm 1.9.3-p484

    noel@noel-U36JC:~/commons/MyApp$ rvm gemset create MyApp
    gemset created MyApp    => /home/noel/.rvm/gems/ruby-1.9.3-p484@MyApp

    noel@noel-U36JC:~/commons/MyApp$ rvm --ruby-version use 1.9.3-p484@MyApp
    Using /home/noel/.rvm/gems/ruby-1.9.3-p484 with gemset MyApp

    noel@noel-U36JC:~/commons/MyApp$ bundle install
    Fetching gem metadata from https://rubygems.org/.........
    Fetching gem metadata from https://rubygems.org/..

    NoMethodError: private method `open' called for Gem::Package:Class
    An error occured while installing rake (10.1.0), and Bundler cannot continue.
    Make sure that `gem install rake -v '10.1.0'` succeeds before bundling.

    noel@noel-U36JC:~/commons/MyApp$ gem install rake -v '10.1.0'
    Successfully installed rake-10.1.0
    Installing ri documentation for rake-10.1.0
    1 gem installed

    noel@noel-U36JC:~/commons/MyApp$ bundle install
    Fetching gem metadata from https://rubygems.org/.........
    Fetching gem metadata from https://rubygems.org/..

    NoMethodError: private method `open' called for Gem::Package:Class
    An error occured while installing rake (10.1.0), and Bundler cannot continue.
    Make sure that `gem install rake -v '10.1.0'` succeeds before bundling.

    noel@noel-U36JC:~/commons/MyApp$ time cucumber
    The program 'cucumber' is currently not installed.  You can install it by typing:
    sudo apt-get install cucumber

    real    0m0.126s
    user    0m0.064s        
    sys     0m0.056s

更新

看起来是Bundler版本问题。

Bundler版本是1.1.3。

现在是1.3.5。

    noel@noel-U36JC:~/commons/MyApp$ time cucumber
    Using the default profile...
    0 scenarios
    0 steps
    0m0.000s

    real    0m6.926s
    user    0m6.592s
    sys 0m0.280s

那似乎有效。：）

Answer 1

原来是Bunder版本问题

所以解决方案是：

gem install bundler
bundle install

最终黄瓜时间为6到7秒，低于最初的60秒加上。

黄瓜性能＆amp;铁路4 - 宝石版冲突？

1 个答案: