自動テストを実行すると、エラーが発生しますCould not find ZenTest-4.7.0 in any of the sources。この記事を見た後、gemfile.lock を削除し、「bundle install」を実行してから、autotest を再実行してみました。今、私はエラーが発生しますCould not find rake-10.0.3 in any of the sources。参考までに、私は RBENV を使用していますが、アプリ (rails c、rails s、rake など) の実行に他に問題はありません。これが私のgemファイルです（ところで、両方の「欠落」ファイルがgemfile.lockに表示されました）：
source 'http://rubygems.org'
gem 'rails', '3.1.3'
gem 'rake'
gem 'pg', '0.13.2'
# Sidekiq handles background jobs, using threading
gem 'sidekiq', '>= 2.6.1'
# Need the following gems for sidekiq/web
gem 'slim'
# if you require 'sinatra' you get the DSL extended to Object
gem 'sinatra', :require => nil
gem 'heroku-api' # Need the API for scaling sidekiq
gem 'json'
gem 'premailer'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'sass-rails', '3.1.4'
gem 'coffee-rails', '~> 3.1.1'
gem 'uglifier', '>= 1.0.3'
end
gem 'jquery-rails'
# To use ActiveModel has_secure_password
gem 'bcrypt-ruby', '~> 3.0.0'
# Use unicorn as the web server
# gem 'unicorn'
# Deploy with Capistrano
# gem 'capistrano'
# Bundle the extra gems:
gem 'mechanize'
gem 'nokogiri'
gem 'spreadsheet'
gem 'xml-simple'
gem 'faker', '~> 0.3.1'
# Bundle gems for the local environment. Make sure to
# put test-only gems in this group so their generators
# and rake tasks are available in development mode:
group :development do
gem 'rspec-rails'
gem 'ruby-debug19'
end
group :test do
gem 'rspec-rails'
gem 'ZenTest'
gem 'shoulda-matchers'
gem 'webrat', '0.7.1'
gem 'factory_girl_rails'
gem 'ruby-debug19'
end
gem 'geoip'
gem 'thin'
gem 'htmlentities'