title: Rspec test in ruby on rails, cannot load such file webmock/rspec
body: <p>when I run rspec test in my ruby on rails application..</p>
  
  <pre><code>git@ruby-rails:~/gitlab$ sudo bundle exec rspec spec/controllers/public_spec.rb 
  No DRb server is running. Running in local process instead ...
  /usr/local/lib/ruby/gems/1.9.1/bundler/gems/gollum-5dcd3c8c8f68/lib/gollum/markup.rb:222: warning: already initialized constant PREFORMATTED_TAGS
  /usr/local/lib/ruby/gems/1.9.1/bundler/gems/gollum-5dcd3c8c8f68/lib/gollum/markup.rb:685: warning: already initialized constant MarkupGFM
  /usr/local/lib/ruby/gems/1.9.1/bundler/gems/gollum-5dcd3c8c8f68/lib/gollum/sanitization.rb:9: warning: already initialized constant ELEMENTS
  /usr/local/lib/ruby/gems/1.9.1/bundler/gems/gollum-5dcd3c8c8f68/lib/gollum/sanitization.rb:23: warning: already initialized constant ATTRIBUTES
  /usr/local/lib/ruby/gems/1.9.1/bundler/gems/gollum-5dcd3c8c8f68/lib/gollum/sanitization.rb:46: warning: already initialized constant PROTOCOLS
  /usr/local/lib/ruby/gems/1.9.1/bundler/gems/gollum-5dcd3c8c8f68/lib/gollum/sanitization.rb:52: warning: already initialized constant ADD_ATTRIBUTES
  /usr/local/lib/ruby/gems/1.9.1/bundler/gems/gollum-5dcd3c8c8f68/lib/gollum/sanitization.rb:62: warning: already initialized constant REMOVE_CONTENTS
  /usr/local/lib/ruby/gems/1.9.1/bundler/gems/gollum-5dcd3c8c8f68/lib/gollum/sanitization.rb:68: warning: already initialized constant TRANSFORMERS
  /usr/local/lib/ruby/gems/1.9.1/bundler/gems/gollum-5dcd3c8c8f68/lib/gollum/web_sequence_diagram.rb:7: warning: already initialized constant WSD_URL
  /usr/local/lib/ruby/gems/1.9.1/bundler/gems/gollum-5dcd3c8c8f68/lib/gollum.rb:32: warning: already initialized constant VERSION
  MiniTest::Unit::TestCase is now Minitest::Test. From /usr/local/lib/ruby/1.9.1/test/unit/testcase.rb:8:in `&lt;module:Unit&gt;'
  MiniTest::Unit::TestCase is now Minitest::Test. From /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/test_case.rb:12:in `&lt;module:ActiveSupport&gt;'
  MiniTest::Unit::TestCase is now Minitest::Test. From /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/descendants_tracker.rb:34:in `inherited'
  MiniTest::Unit::TestCase is now Minitest::Test. From /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/descendants_tracker.rb:34:in `inherited'
  MiniTest::Unit::TestCase is now Minitest::Test. From /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/descendants_tracker.rb:34:in `inherited'
  MiniTest::Unit::TestCase is now Minitest::Test. From /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/descendants_tracker.rb:34:in `inherited'
  MiniTest::Unit::TestCase is now Minitest::Test. From /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/descendants_tracker.rb:34:in `inherited'
  /usr/local/lib/ruby/gems/1.9.1/gems/backports-3.3.3/lib/backports/tools.rb:328:in `require': cannot load such file -- webmock/rspec (LoadError)
      from /usr/local/lib/ruby/gems/1.9.1/gems/backports-3.3.3/lib/backports/tools.rb:328:in `require_with_backports'
      from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `block in require'
      from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in `load_dependency'
      from /usr/local/lib/ruby/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
      from /home/git/gitlab/spec/spec_helper.rb:18:in `block in &lt;top (required)&gt;'
      from /usr/local/lib/ruby/gems/1.9.1/gems/spork-1.0.0rc2/lib/spork.rb:24:in `prefork'
      from /home/git/gitlab/spec/spec_helper.rb:4:in `&lt;top (required)&gt;'
      from /home/git/gitlab/spec/controllers/public_spec.rb:2:in `require'
      from /home/git/gitlab/spec/controllers/public_spec.rb:2:in `&lt;top (required)&gt;'
      from /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/configuration.rb:789:in `load'
      from /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/configuration.rb:789:in `block in load_spec_files'
      from /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/configuration.rb:789:in `each'
      from /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/configuration.rb:789:in `load_spec_files'
      from /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/command_line.rb:22:in `run'
      from /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/runner.rb:77:in `rescue in run'
      from /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/runner.rb:73:in `run'
      from /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/runner.rb:17:in `block in autorun'
  Coverage report generated for RSpec to /home/git/gitlab/coverage. 2055 / 5187 LOC (39.62%) covered.
  </code></pre>
  
  <p>Here is my Gemfile:</p>
  
  <pre><code>  gem 'coveralls', require: false
    gem 'rails-dev-tweaks'
    gem 'spinach-rails', '0.2.0'
    gem "rspec-rails", '2.12.2'
    gem "capybara", '2.0.2'
    gem "pry"
    gem "awesome_print"
    gem "database_cleaner"
  --
    # Generate Fake data
    gem "ffaker"
  
    # Guard
    gem 'guard-rspec'
    gem 'guard-spinach'
  
    # Notification
    gem 'rb-fsevent', require: darwin_only('rb-fsevent')
  </code></pre>
  
  <p>I am sure that my Gemfile do contains rspec-rails. And this command also works fine:</p>
  
  <pre><code>ruby -e 'require "webmock/rspec"'
  </code></pre>
  
  <p>I doubt that there is something wrong with my bundler.</p>
  
  <p>But when I check my bundle. </p>
  
  <pre><code>more /usr/local/bin/bundle
  </code></pre>
  
  <p>I saw:</p>
  
  <pre><code>#!/usr/local/bin/ruby
  </code></pre>
  
  <p>This means bundle is using the same ruby as I test.</p>
  
  <p>Here is the ruby version I am using:</p>
  
  <pre><code>ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]
  </code></pre>