整頓寶石，蒙戈，測試的ActiveRecord :: ConnectionNotEstablished

Question

加入整頓寶石畢竟測試失敗，出現錯誤：

ActiveRecord::ConnectionNotEstablished: 
No connection pool for ActiveRecord::Base 

我們使用：
寶石：

• 的Rails 4.2.8
• Mongoid 5
• 糾正0.9.1
• Rspec的3.4.4

另：

• O的：Ubuntu的16.04LTE
• 的MongoDB：3.4.3
• 數據庫由搬運工-撰寫運行。
• 泊塢窗，撰寫版本1.12.0

到開發模式，一切工作正常。
mongoid.yml

development: 
    clients: 
    default: 
     database: development 
     hosts: 
     - localhost:27017 
     options: 
     heartbeat_frequency: 10 
     local_threshold: 0.015 
     server_selection_timeout: 30 
     max_pool_size: 5 
     min_pool_size: 1 
     wait_queue_timeout: 1 
     connect_timeout: 10 
     socket_timeout: 5 
     ssl: false 
     ssl_cert: /path/to/my.cert 
     ssl_key: /path/to/my.key 
     ssl_key_pass_phrase: password 
     ssl_verify: true 
     ssl_ca_cert: /path/to/ca.cert 
    options: 
    include_root_in_json: false 
    include_type_for_serialization: false 
    preload_models: false 
    raise_not_found_error: false 
    scope_overwrite_exception: false 
    use_activesupport_time_zone: true 
    use_utc: false 
    log_level: debug 

test: 
    clients: 
    default: 
     database: test 
     hosts: 
     - localhost:27017 
     options: 
     heartbeat_frequency: 10 
     local_threshold: 0.015 
     server_selection_timeout: 30 
     max_pool_size: 1 
     min_pool_size: 1 
     wait_queue_timeout: 4 
     connect_timeout: 10 
     socket_timeout: 5 
     ssl: false 
     ssl_cert: /path/to/my.cert 
     ssl_key: /path/to/my.key 
     ssl_key_pass_phrase: password 
     ssl_verify: true 
     ssl_ca_cert: /path/to/ca.cert 
    options: 
    include_root_in_json: false 
    include_type_for_serialization: false 
    preload_models: false 
    raise_not_found_error: false 
    scope_overwrite_exception: false 
    use_activesupport_time_zone: true 
    use_utc: false 
    log_level: debug 

堆棧跟蹤

ActiveRecord::ConnectionNotEstablished: 
    No connection pool for ActiveRecord::Base 
# /home/user_home_directory/.rvm/gems/ruby-2.3.3@testing/gems/activerecord-4.2.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:570:in `retrieve_connection' 
# /home/user_home_directory/.rvm/gems/ruby-2.3.3@testing/gems/activerecord-4.2.8/lib/active_record/connection_handling.rb:113:in `retrieve_connection' 
# /home/user_home_directory/.rvm/gems/ruby-2.3.3@testing/gems/activerecord-4.2.8/lib/active_record/connection_handling.rb:87:in `connection' 
# /home/user_home_directory/.rvm/gems/ruby-2.3.3@testing/gems/activerecord-4.2.8/lib/active_record/fixtures.rb:501:in `create_fixtures' 
# /home/user_home_directory/.rvm/gems/ruby-2.3.3@testing/gems/activerecord-4.2.8/lib/active_record/fixtures.rb:979:in `load_fixtures' 
# /home/user_home_directory/.rvm/gems/ruby-2.3.3@testing/gems/activerecord-4.2.8/lib/active_record/fixtures.rb:952:in `setup_fixtures' 
# /home/user_home_directory/.rvm/gems/ruby-2.3.3@testing/gems/activerecord-4.2.8/lib/active_record/fixtures.rb:826:in `before_setup' 

看起來有一些簡單的錯誤到測試數據庫的配置，但我不明白究竟是什麼。
任何幫助將不勝感激。謝謝！

Answer 1

修正版本0.9.1不支持Mongoid。
Link適當的問題。