NoMethodError: неопределенный метод «результат» для #‹NoMethodError: неопределенный метод «поля» для nil:NilClass›

У меня случайным образом возникает следующая ошибка при запуске rspec с капибарой и полтергейстом:

NoMethodError: undefined method `result' for #<NoMethodError: undefined method `fields' for nil:NilClass>

Я думаю, что причина может быть связана с подключением к базе данных. Итак, кто-нибудь может подтвердить это мне? Я попытаюсь использовать усечение с database_cleaner, но запускать весь пакет с усечением ОЧЕНЬ МЕДЛЕННО!

Стратегии, позволяющие избежать этого и поддерживать быструю работу спецификаций, приветствуются!

Обратный след:

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~/.rvm/gems/ruby-2.0.0-p0/gems/devise-2.2.3/lib/devise/controllers/helpers.rb:56:in `current_admin_user'
./app/controllers/admin/base_controller.rb:5:in `user_for_paper_trail'
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~/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/webrick/server.rb:295:in `block in start_thread'# /home/rafaelsouza/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:1147:in `translate_exception'

ruby ruby-on-rails database rspec poltergeist
person rafaelkin    schedule 30.04.2013    source источник
comment
Ошибка в том, что вы вызываете поля метода в нулевом классе. Что вы ожидаете, что мы скажем вам о вашей ошибке только с этой строкой?   -  person fotanus    schedule 30.04.2013
comment
Я думаю, что это не внутри моего кода. Отредактировал вопрос с обратной трассировкой.   -  person rafaelkin    schedule 30.04.2013
comment
У меня есть подсказка. Я использую rspec «до» и «пусть!». Запускаются ли хуки «до (: каждый)» в отдельном потоке примера полтергейста js: true rspec?   -  person rafaelkin    schedule 30.04.2013
comment
Вы не можете запускать тесты селена/полтергейста, используя стратегию транзакций - это должно быть усечение. См. этот пост для получения информации о включении переключателя, который может сэкономить вам время на тестах, не требующих js.   -  person Zach Kemp    schedule 30.04.2013

Ответы (2)


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Возможно, это связано с постоянными соединениями. https://gist.github.com/compwron/48eed93cb9e0a86affb0

person compiledweird    schedule 01.10.2014

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Я столкнулся с подобной проблемой в AR 3.2.13. Объяснение ошибки заключается в том, что внутри AR есть общий обработчик исключений, который перехватывает все исключения и пытается преобразовать их в осмысленные и однородные ошибки. Вот источник функции:

    def translate_exception(exception, message)
      case exception.result.error_field(PGresult::PG_DIAG_SQLSTATE)
      when UNIQUE_VIOLATION
        RecordNotUnique.new(message, exception)
      when FOREIGN_KEY_VIOLATION
        InvalidForeignKey.new(message, exception)
      else
        super
      end
    end

Все должно пройти хорошо, если это действительно ошибка базы данных, но если это другая ошибка (время ожидания выполнения при использовании DelayedJobs, SIGTERM, ...), то обработчик исключений сам выдаст другое исключение, и это то, что вы видите в сообщении об исключении.

Это известная ошибка в AR 3.2.13, исправленная в 3.2.14.

Посмотри на эти:

https://github.com/rails/rails/issues/10917

https://github.com/rails/rails/pull/9493

person hammady    schedule 08.01.2015