这是我的宝石文件：
source 'https://rubygems.org'
gem 'rails', '3.2.2'
# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'
group :production do
gem 'pg'
end
group :test, :development do
gem 'mysql2'
gem "cucumber-rails", "~> 1.3.0"
gem "rspec-rails", "~> 2.9.0"
gem "database_cleaner", "~> 0.7.2"
gem "factory_girl", "~> 3.0.0"
end
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'sass-rails', '~> 3.2.3'
gem 'coffee-rails', '~> 3.2.1'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer'
gem 'uglifier', '>= 1.0.3'
end
gem 'jquery-rails'
gem "heroku"
# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'
# To use Jbuilder templates for JSON
# gem 'jbuilder'
# Use unicorn as the app server
# gem 'unicorn'
# Deploy with Capistrano
# gem 'capistrano'
# To use debugger
# gem 'ruby-debug19', :require => 'ruby-debug'
我在 Ruby 1.9.3-p125 和 Rails 3.2.2 中。
当我这样做时$ cucumber，我收到以下错误：
Please install the sqlite3 adapter: `gem install activerecord-sqlite3-adapter` (sqlite3 is not part of the bundle. Add it to Gemfile.) (LoadError)
为什么我会收到此错误？我不想使用 sqlite3 gem，我不知道为什么在启动 cucumber 时我会得到它。我可以毫无问题地启动服务器...