Mysql 加载databsae.yml时出错

我正在尝试设置mysql测试数据库，但出现了一个奇怪的错误，这些是我的配置

宝石档案

source 'https://rubygems.org'

gem 'rails', '3.2.9'

# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'

gem 'sqlite3'
gem "mysql2"

# 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', :platforms => :ruby

  gem 'uglifier', '>= 1.0.3'
end

group :test, :development do
  gem "rspec-rails", "~> 2.0"
  gem 'database_cleaner'
  gem 'capybara'
  gem "factory_girl_rails", ">= 4.1.0"
  gem 'cucumber-rails', :require => false
  gem 'mocha'
  gem "shoulda-matchers"
  gem "spork"
  gem 'guard-rspec'
  gem "guard-spork"
  gem 'rb-inotify', '~> 0.8.8' 
  gem 'cucumber-rails', :require => false
  gem 'cucumber-rails-training-wheels' #Still running on 'L' board
end

gem 'jquery-rails'
gem "twitter-bootstrap-rails"
gem "therubyracer", '0.10.2'
gem "less-rails"

gem 'devise'
gem 'omniauth-google-oauth2'
gem 'cancan'

# To use debugger
gem 'debugger'
gem 'ruby-prof'

mydatabase.yml文件

# SQLite version 3.x
#   gem install sqlite3
#
#   Ensure the SQLite 3 gem is defined in your Gemfile
#   gem 'sqlite3'
development:
  adapter: sqlite3
  database: db/development.sqlite3
  pool: 5
  timeout: 5000

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  adapter: mysql2
  username: root
  password: root
  host: localhost
  database: bamboo_test

production:
  adapter: sqlite3
  database: db/production.sqlite3
  pool: 5
  timeout: 5000

cucumber:
  <<: *test

#SQLite版本3.x
#gem安装sqlite3
#
#确保在gem文件中定义了SQLite 3 gem
#gem'sqlite3'
发展：
适配器：sqlite3
数据库：db/development.sqlite3
游泳池：5
超时：5000
#警告：定义为“测试”的数据库将被删除并删除
#运行“rake”时从开发数据库重新生成。
#请勿将此数据库设置为与开发或生产相同的数据库。
测试：
适配器：mysql2
用户名：root
密码：root
主机：本地主机
数据库：竹纤维u试验
制作：
适配器：sqlite3
数据库：db/production.sqlite3
游泳池：5
超时：5000
黄瓜：
db:create:all=>db:load\u config
（通过使用--trace运行任务查看完整跟踪）
[sameera@sameera竹]$rake db:create:all-trace
**调用数据库：创建：全部（第一次）
**调用数据库：加载配置（第一次）
**执行db:load\u config
雷克流产了！
无法将nil转换为哈希
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:196:in'merge！'
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:196:in“访问中的块心理节点映射”
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:190:in'each'
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:190:在“每一片”中
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:190:在“访问心理节点映射”中
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/visitor.rb:7:in'accept'
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:16:in'accept'
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:205:“访问中的块心理节点映射”
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:190:in'each'
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:190:在“每一片”中
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:190:在“访问心理节点映射”中
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/visitor.rb:7:in'accept'
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/visitors/to_ruby.rb:16:in'accept'
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych/nodes/node.rb:25:in'to_ruby'
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/psych.rb:107:in'load'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.9/lib/rails/application/configuration.rb:115:在“数据库配置”中
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.9/lib/active\u record/railties/databases.rake:25:in `块（2层）in'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/task.rb:228:in'call'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/task.rb:228:in`block in execute'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/task.rb:223:in'each'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/task.rb:223:in'execute'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/task.rb:166:in`block in invoke_with_call_chain'
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in'mon_synchronize'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/task.rb:159:在“调用”和“调用链”中
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/task.rb:187:在“调用中的块”中
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/task.rb:185:in'each'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/task.rb:185:在“调用”前提条件中
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/task.rb:165:in`block in invoke_with_call_chain'
/home/sameera/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in'mon_synchronize'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/task.rb:159:在“调用”和“调用链”中
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/task.rb:152:in'invoke'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/application.rb:143:在“调用任务”中
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/application.rb:101:在“顶层中的块（2层）”中
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/application.rb:101:in'each'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/application.rb:101:在“顶层块”中
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/application.rb:110:在“使用线程运行”中
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/application.rb:95:“顶级”
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/application.rb:73:in'block in run'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/application.rb:160:在“标准异常处理”中
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/lib/rake/application.rb:70:in'run'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/gems/rake-10.0.3/bin/rake:33:in`'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/bin/rake:19:in'load'
/home/sameera/.rvm/gems/ruby-1.9.2-p290/bin/rake:19:in`'
任务：TOP=>db:create:all=>db:load\u config

---

加载

.yml

文件时会出现错误，但我觉得该文件似乎没有问题。任何帮助都将不胜感激。

问题在于您在cucumber部分中引用了测试环境别名，而没有实际创建它。尝试将测试环境修改为：

test: &test
  adapter: mysql2
  username: root
  password: root
  host: localhost
  database: bamboo_test

test: &test
  adapter: mysql2
  username: root
  password: root
  host: localhost
  database: bamboo_test