uninitialized constant MochaRails (NameError)

[ColemanGariety]

This is the error I get when I try to start my app with mocha_rails:

routes.rb:2:in `block in <top (required)>': uninitialized constant MochaRails (NameError)

Reproduce:

1. Add gem 'mocha_rails' to the :test, :development group in Gemfile.
2. Run bundle install
3. Run rails g mocha_rails:install
4. Run rails server

[quartzmo]

Thanks for submitting this. Can you please give me some environment info? Bundler, Ruby, and Rails versions?

And just in case: Does "bundle exec rails server" help by any chance?

[ColemanGariety]

Ruby: 1.9.3p448 Bundler: 1.3.5 Rails: 3.2.11

bundle_exec does not help

[quartzmo]

I'm sorry, I tried to reproduce this by following your steps in a new Rails project, using nearly the same versions, but I could not.

Here is my bundle list output:

mocha_rails_test quartzmo$ bundle list Gems included by the bundle:

• actionmailer (3.2.13)
• actionpack (3.2.13)
• activemodel (3.2.13)
• activerecord (3.2.13)
• activeresource (3.2.13)
• activesupport (3.2.13)
• arel (3.0.2)
• builder (3.0.4)
• bundler (1.3.5)
• coffee-rails (3.2.2)
• coffee-script (2.2.0)
• coffee-script-source (1.6.3)
• erubis (2.7.0)
• execjs (2.0.2)
• hike (1.2.3)
• i18n (0.6.1)
• journey (1.0.4)
• jquery-rails (3.0.4)
• json (1.8.0)
• mail (2.5.4)
• mime-types (1.25)
• mocha_rails (0.0.5)
• multi_json (1.8.0)
• polyglot (0.3.3)
• rack (1.4.5)
• rack-cache (1.2)
• rack-ssl (1.3.3)
• rack-test (0.6.2)
• rails (3.2.13)
• railties (3.2.13)
• rake (10.1.0)
• rdoc (3.12.2)
• sass (3.2.11)
• sass-rails (3.2.6)
• sprockets (2.2.2)
• sqlite3 (1.3.8)
• thor (0.18.1)
• tilt (1.4.1)
• treetop (1.4.15)
• tzinfo (0.3.37)
• uglifier (2.2.1)

[ColemanGariety]

@quartzmo

The issue is nonexistant if I require the gem first:

unless Rails.env.production?
  require "mocha_rails"
  mount MochaRails::Engine => 'mocha' 
end

Any idea why that might be?

[ColemanGariety]

@quartzmo however, the localhost:3000/mocha route still gives

Routing Error
No route matches [GET] "/mocha"

As if nothing is loaded. I feel I missed a step.

[quartzmo]

Afaik, you should never have to manually require a Rails Engine. So I think the require solution is going down the wrong path. I still can't reproduce this issue myself, so hard for me to help.

[mmwtsn]

For what it's worth, I'm still seeing this error after following the installation steps outlined in the original post.

@JacksonGariety's require 'mocha_rails' fix resolves the issue but Rails then returns:

Routing Error
No route matches [GET] "/mocha"