#3872 [PATCH] Rails3 application named 'Test' fails webrick with uninitialized constant Rack::Test::Application - Ruby on Rails

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#3872 ✓committed

[PATCH] Rails3 application named 'Test' fails webrick with uninitialized constant Rack::Test::Application

Reported by MOE | February 6th, 2010 @ 06:05 AM | in 3.0.2

Webrick fails with rescue in load_missing_constant': uninitialized constant Rack::Test::Application (NameError) if application is named 'Test'. Stack trace:


moe@ingrid:/tmp/Test$ rails server
=> Booting WEBrick
=> Rails 3.0.0.beta application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/var/lib/gems/1.9.1/gems/activesupport-3.0.0.beta/lib/active_support/dependencies.rb:456:in `rescue in load_missing_constant': uninitialized constant Rack::Test::Application (NameError)
    from /var/lib/gems/1.9.1/gems/activesupport-3.0.0.beta/lib/active_support/dependencies.rb:452:in `load_missing_constant'
    from /var/lib/gems/1.9.1/gems/activesupport-3.0.0.beta/lib/active_support/dependencies.rb:91:in `const_missing_with_dependencies'
    from config.ru:4:in `block in '
    from /var/lib/gems/1.9.1/gems/rack-1.1.0/lib/rack/builder.rb:46:in `instance_eval'
    from /var/lib/gems/1.9.1/gems/rack-1.1.0/lib/rack/builder.rb:46:in `initialize'
    from config.ru:1:in `new'
    from config.ru:1:in `'
    from /var/lib/gems/1.9.1/gems/rack-1.1.0/lib/rack/builder.rb:35:in `eval'
    from /var/lib/gems/1.9.1/gems/rack-1.1.0/lib/rack/builder.rb:35:in `parse_file'
    from /var/lib/gems/1.9.1/gems/rack-1.1.0/lib/rack/server.rb:113:in `app'
    from /var/lib/gems/1.9.1/gems/rack-1.1.0/lib/rack/server.rb:189:in `wrapped_app'
    from /var/lib/gems/1.9.1/gems/rack-1.1.0/lib/rack/server.rb:155:in `start'
    from /var/lib/gems/1.9.1/gems/railties-3.0.0.beta/lib/rails/commands/server.rb:49:in `start'
    from /var/lib/gems/1.9.1/gems/rack-1.1.0/lib/rack/server.rb:83:in `start'
    from /var/lib/gems/1.9.1/gems/railties-3.0.0.beta/lib/rails/commands.rb:39:in `'
    from /tmp/Test/script/rails:10:in `require'
    from /tmp/Test/script/rails:10:in `'

I guess this should be somehow mentioned at docs...

Comments and changes to this ticket

You flagged this item as spam.
MOE February 6th, 2010 @ 06:22 AM
- Tag set to “rails 3.0, rack, server, webrick”
José Valim February 6th, 2010 @ 10:05 AM
Could you please provide a patch to update the docs then? Thanks.
You flagged this item as spam.
Kieran P February 6th, 2010 @ 06:53 PM
It might be worth adding a check to see if the constant is already defined in the current app, i.e.
```
raise "Already used" if defined?(APP_NAME)
```
José Valim February 6th, 2010 @ 06:56 PM
It's more complicated than that. In this case, it's failing due to Rack::Test. And defined?(Test) wouldn't get it.
You flagged this item as spam.
Kieran P February 6th, 2010 @ 07:58 PM
- Title changed from “Rails3 application named 'Test' fails webrick with uninitialized constant Rack::Test::Application” to “[PATCH] Rails3 application named 'Test' fails webrick with uninitialized constant Rack::Test::Application”
Right, but checking to make sure things like String or Module aren't used would be a good start.

I've attached a patch +tests to do this.
- add_additional_app_name_checks.diff 3 KB
You flagged this item as spam.
ecleel March 4th, 2010 @ 11:14 PM
- Tag changed from “rails 3.0, rack, server, webrick” to “rails 3.0, rack, server, thin”
Thin webserver gives me same problem.

thin -v = 1.2.7
You flagged this item as spam.
ecleel March 4th, 2010 @ 11:14 PM
- Tag changed from “rails 3.0, rack, server, thin” to “rails 3.0, rack, server, thin, webrick”
José Valim March 5th, 2010 @ 07:09 AM
- Milestone cleared.
- Assigned user set to “José Valim”
José Valim March 12th, 2010 @ 08:25 PM
- State changed from “new” to “committed”
Thanks Kieran. Committed.
Repository March 12th, 2010 @ 08:34 PM
(from [9268b598bb20523e1b886f8811598647ce427ef9]) Add a check to ensure that the application name does not already exist, i.e. String or Module are part of ruby [#3872 status:resolved]

Signed-off-by: José Valim jose.valim@gmail.com
http://github.com/rails/rails/commit/9268b598bb20523e1b886f88115986...
Jeremy Kemper October 15th, 2010 @ 11:01 PM
- Milestone set to “3.0.2”
- Importance changed from “” to “Low”
[bulk edit]

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add_additional_app_name_che... 3 KB

Referenced by

3872 [PATCH] Rails3 application named 'Test' fails webrick with uninitialized constant Rack::Test::Application (from [9268b598bb20523e1b886f8811598647ce427ef9]) Add a c...

Rails Ruby on Rails → 3.0.2