require: No such file to load -- test_helper (LoadError) 只发生在生产中而不是开发中
require: No such file to load -- test_helper (LoadError) happens only in production not in development
我是 Rails 上 Ruby 的新手，正在学习 Michael Hartl 的 Ruby On Rails 教程。我在第 9 章，在开发中一切正常——所有测试都通过了，我可以打开应用程序并四处移动。但是，当我尝试在生产环境 (Heroku) 中打开时，应用程序崩溃了。这是 Heroku 控制台错误消息：
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require': No such file to load -- test_helper (LoadError)
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `block in require'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:240:in `load_dependency'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
from /app/app/helpers/sessions_helper_test.rb:1:in `<top (required)>'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `block in require'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:240:in `load_dependency'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:360:in `require_or_load'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:317:in `depend_on'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:233:in `require_dependency'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/engine.rb:472:in `block (2 levels) in eager_load!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/engine.rb:471:in `each'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/engine.rb:471:in `block in eager_load!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/engine.rb:469:in `each'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/engine.rb:469:in `eager_load!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/engine.rb:346:in `eager_load!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/application/finisher.rb:56:in `each'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/application/finisher.rb:56:in `block in <module:Finisher>'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/initializable.rb:30:in `instance_exec'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/initializable.rb:30:in `run'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/initializable.rb:55:in `block in run_initializers'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_component_from'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_connected_component'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:180:in `each'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_component'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/initializable.rb:54:in `run_initializers'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/application.rb:352:in `initialize!'
from /app/config/environment.rb:5:in `<top (required)>'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/application.rb:328:in `require'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/application.rb:328:in `require_environment!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:142:in `require_application_and_environment!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:67:in `console'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/commands.rb:17:in `<top (required)>'
from /app/bin/rails:9:in `require'
from /app/bin/rails:9:in `<main>'
如果我尝试
，我会收到相同的消息
rails s -e production
我已经确认我的 test_helper.rb 文件确实在我的测试文件夹中。任何帮助表示赞赏。
这是盲目尝试，但您是否需要在应用程序的其他地方使用 test_helper？通过阅读回溯，您似乎在 app/app/helpers/sessions_helper_test.rb.
中需要它
此外，app/app/看起来很可疑。您的应用程序文件夹中是否有应用程序文件夹？这也可能是个问题。
我是 Rails 上 Ruby 的新手，正在学习 Michael Hartl 的 Ruby On Rails 教程。我在第 9 章，在开发中一切正常——所有测试都通过了，我可以打开应用程序并四处移动。但是，当我尝试在生产环境 (Heroku) 中打开时，应用程序崩溃了。这是 Heroku 控制台错误消息：
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require': No such file to load -- test_helper (LoadError)
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `block in require'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:240:in `load_dependency'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
from /app/app/helpers/sessions_helper_test.rb:1:in `<top (required)>'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `block in require'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:240:in `load_dependency'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:360:in `require_or_load'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:317:in `depend_on'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:233:in `require_dependency'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/engine.rb:472:in `block (2 levels) in eager_load!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/engine.rb:471:in `each'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/engine.rb:471:in `block in eager_load!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/engine.rb:469:in `each'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/engine.rb:469:in `eager_load!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/engine.rb:346:in `eager_load!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/application/finisher.rb:56:in `each'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/application/finisher.rb:56:in `block in <module:Finisher>'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/initializable.rb:30:in `instance_exec'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/initializable.rb:30:in `run'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/initializable.rb:55:in `block in run_initializers'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_component_from'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_connected_component'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:180:in `each'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_component'
from /app/vendor/ruby-2.0.0/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/initializable.rb:54:in `run_initializers'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/application.rb:352:in `initialize!'
from /app/config/environment.rb:5:in `<top (required)>'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/application.rb:328:in `require'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/application.rb:328:in `require_environment!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:142:in `require_application_and_environment!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:67:in `console'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.2/lib/rails/commands.rb:17:in `<top (required)>'
from /app/bin/rails:9:in `require'
from /app/bin/rails:9:in `<main>'
如果我尝试
，我会收到相同的消息rails s -e production
我已经确认我的 test_helper.rb 文件确实在我的测试文件夹中。任何帮助表示赞赏。
这是盲目尝试，但您是否需要在应用程序的其他地方使用 test_helper？通过阅读回溯，您似乎在 app/app/helpers/sessions_helper_test.rb.
此外，app/app/看起来很可疑。您的应用程序文件夹中是否有应用程序文件夹？这也可能是个问题。