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我的一些rSpec測試失敗了，我懷疑這是由於測試數據庫未被清除。當我嘗試運行rake db時：test：prepare，我得到下面的錯誤（我在Rails 3.2中）。顯然，這看起來像某種Postgres問題，看起來像rake任務試圖放棄測試數據庫，因此它可以重新填充它。生產數據庫模式加載正常。rake db：test：由於PG錯誤而準備出錯
我已經在lib/tasks /中查找了rake任務，但是我一直無法找到它。任何人都知道發生了什麼？
osx_user-> rake db:test:prepare
[RailsAdmin] RailsAdmin initialization disabled by default. Pass SKIP_RAILS_ADMIN_INITIALIZER=false if you need it.
rake aborted!
ActiveRecord::StatementInvalid: PG::SyntaxError: ERROR: zero-length delimited identifier at or near """"
LINE 1: DROP DATABASE IF EXISTS ""
^
: DROP DATABASE IF EXISTS ""
/Users/osx_user/.rvm/gems/ruby-1.9.3-p547/gems/activerecord-3.2.14/lib/active_record/connection_adapters/postgresql_adapter.rb:650:in `async_exec'
/Users/osx_user/.rvm/gems/ruby-1.9.3-p547/gems/activerecord-3.2.14/lib/active_record/connection_adapters/postgresql_adapter.rb:650:in `block in execute'
/Users/osx_user/.rvm/gems/ruby-1.9.3-p547/gems/activerecord-3.2.14/lib/active_record/connection_adapters/abstract_adapter.rb:280:in `block in log'
/Users/osx_user/.rvm/gems/ruby-1.9.3-p547/gems/activesupport-3.2.14/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/Users/osx_user/.rvm/gems/ruby-1.9.3-p547/gems/activerecord-3.2.14/lib/active_record/connection_adapters/abstract_adapter.rb:275:in `log'
/Users/osx_user/.rvm/gems/ruby-1.9.3-p547/gems/activerecord-3.2.14/lib/active_record/connection_adapters/postgresql_adapter.rb:649:in `execute'
/Users/osx_user/.rvm/gems/ruby-1.9.3-p547/gems/activerecord-3.2.14/lib/active_record/connection_adapters/postgresql_adapter.rb:772:in `drop_database'
/Users/osx_user/.rvm/gems/ruby-1.9.3-p547/gems/activerecord-3.2.14/lib/active_record/railties/databases.rake:623:in `drop_database'
/Users/osx_user/.rvm/gems/ruby-1.9.3-p547/gems/activerecord-3.2.14/lib/active_record/railties/databases.rake:532:in `block (3 levels) in <top (required)>'
/Users/osx_user/.rvm/gems/ruby-1.9.3-p547/gems/activerecord-3.2.14/lib/active_record/railties/databases.rake:559:in `block (3 levels) in <top (required)>'
/Users/osx_user/.rvm/gems/ruby-1.9.3-p547/bin/ruby_executable_hooks:15:in `eval'
/Users/osx_user/.rvm/gems/ruby-1.9.3-p547/bin/ruby_executable_hooks:15:in `<main>'
Tasks: TOP => db:test:load => db:test:purge
(See full trace by running task with --trace)