Hartl 教程中的 bundle exec rspec spec/requests/static_pages_spec.rb 不起作用

我正在按照 Michael Hartl 的 ruby​​ on Rails 教程来测试示例应用程序（3.2.1 测试驱动开发），但在输入后出现以下错误bundle exec rspec spec/requests/static_pages_spec.rb

/home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/selenium-webdriver-2.0.0/lib/selenium/webdriver/common/zipper.rb:1:in `require': cannot load such file -- zip/zip (LoadError)
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/selenium-webdriver-2.0.0/lib/selenium/webdriver/common/zipper.rb:1:in `<top (required)>'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/selenium-webdriver-2.0.0/lib/selenium/webdriver/common.rb:9:in `require'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/selenium-webdriver-2.0.0/lib/selenium/webdriver/common.rb:9:in `<top (required)>'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/selenium-webdriver-2.0.0/lib/selenium/webdriver.rb:29:in `require'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/selenium-webdriver-2.0.0/lib/selenium/webdriver.rb:29:in `<top (required)>'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/selenium-webdriver-2.0.0/lib/selenium-webdriver.rb:1:in `require'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/selenium-webdriver-2.0.0/lib/selenium-webdriver.rb:1:in `<top (required)>'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `require'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:72:in `block (2 levels) in require'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `each'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:70:in `block in require'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `each'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@global/gems/bundler-1.3.5/lib/bundler/runtime.rb:59:in `require'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@global/gems/bundler-1.3.5/lib/bundler.rb:132:in `require'
    from /home/rahul/Downloads/rails_projects/sample_app/config/application.rb:12:in `<top (required)>'
    from /home/rahul/Downloads/rails_projects/sample_app/config/environment.rb:2:in `require'
    from /home/rahul/Downloads/rails_projects/sample_app/config/environment.rb:2:in `<top (required)>'
    from /home/rahul/Downloads/rails_projects/sample_app/spec/spec_helper.rb:3:in `require'
    from /home/rahul/Downloads/rails_projects/sample_app/spec/spec_helper.rb:3:in `<top (required)>'
    from /home/rahul/Downloads/rails_projects/sample_app/spec/requests/static_pages_spec.rb:1:in `require'
    from /home/rahul/Downloads/rails_projects/sample_app/spec/requests/static_pages_spec.rb:1:in `<top (required)>'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `load'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `block in load_spec_files'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `each'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rspec-core-2.13.1/lib/rspec/core/configuration.rb:819:in `load_spec_files'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rspec-core-2.13.1/lib/rspec/core/command_line.rb:22:in `run'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rspec-core-2.13.1/lib/rspec/core/runner.rb:80:in `run'
    from /home/rahul/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rspec-core-2.13.1/lib/rspec/core/runner.rb:17:in `block in autorun'

这是来自的代码spec/requests/static_pages_spec file:

require 'spec_helper'

describe "Static pages" do

  describe "Home page" do

    it "should have the content 'Sample App' " do
      visit '/static_pages/home'
      expect(page).to have_content('Sample App')
    end

  end

end

Gemfile:

source 'https://rubygems.org'
ruby '2.0.0'
#ruby-gemset=railstutorial_rails_4_0

gem 'rails', '4.0.0'

group :development, :test do
  gem 'sqlite3', '1.3.7'
  gem 'rspec-rails', '2.13.1'
end

group :test do
  gem 'selenium-webdriver', '2.0.0'
  gem 'capybara', '2.1.0'
end

gem 'sass-rails', '4.0.0'
gem 'uglifier', '2.1.1'
gem 'coffee-rails', '4.0.0'
gem 'jquery-rails', '2.2.1'
gem 'turbolinks', '1.1.1'
gem 'jbuilder', '1.0.2'

group :doc do
  gem 'sdoc', '0.3.20', require: false
end

group :production do
  gem 'pg', '0.15.1'
  gem 'rails_12factor', '0.0.2'
end

routes.rb:

SampleApp::Application.routes.draw do
  get "static_pages/home"
  get "static_pages/help"
end

OS：Ubuntu 13.04

我一直在寻找解决方案，但还没有找到。请记住，我是 Ruby on Rails 和 Web 开发的新手。

错误信息：

in `require': cannot load such file -- zip/zip (LoadError)

指的是一个名为“rubyzip”的缺失宝石。它应该由bundler与selenium-web驱动程序一起安装，但有时这些东西并不完美。在这种情况下，最新版本的“rubyzip”gem 更改了库结构，因此“zip/zip”不存在。 Bundler默认会安装最新版本，这就是为什么安装时没有错误，但是当你尝试运行项目时会出现错误，因为selenium-webdriver依赖列表不知道其中的差异。

尝试添加gem 'rubyzip', '< 1.0.0'到您的测试组，然后重新运行bundle install.

该问题似乎是由更新引起的rubyzip宝石，参见https://github.com/rubyzip/rubyzip https://github.com/rubyzip/rubyzip

The selenium-webdrivergem 可能需要更新以反映这些更改 - 我已经记录了一个问题：https://github.com/vertis/selenium-webdriver/issues/3 https://github.com/vertis/selenium-webdriver/issues/3