title: Exception message: no such file to load in rails application
body: <p>I have included <code>test_helper.rb</code> under <code>test</code> in my rails application. I have even included 
  <code>require 'test_helper'</code> in my <code>test.rb</code> files under <code>test-&gt;unit</code>. When I run all the test in RubyMine for the application, I get the following error:</p>
  
  <p>I have the latest versions of all RubyMine 3.2, ruby 1.9.2p290 and Rails 3.1.0.</p>
  
  <pre><code>/Users/im/.rvm/rubies/ruby-1.9.2-p290/bin/ruby -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb
  Testing started at 3:19 PM ...
  Work directory: /Users/im/RubymineProjects/BackChannelApp}
  Loading files.... 
  =========================================
  Fail to load: /Users/im/RubymineProjects/BackChannelApp/test/performance/browsing_test.rb:1
        Exception message: no such file to load -- test_helper
          /Users/im/RubymineProjects/BackChannelApp/test/performance/browsing_test.rb:1:in `require'
          /Users/im/RubymineProjects/BackChannelApp/test/performance/browsing_test.rb:1:in `&lt;top (required)&gt;'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:48:in `require'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:48:in `block in load_scripts_to_object_space'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:40:in `each'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:40:in `load_scripts_to_object_space'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:101:in `&lt;top (required)&gt;'
          -e:1:in `load'
          -e:1:in `&lt;main&gt;'
  Fail to load: /Users/im/RubymineProjects/BackChannelApp/test/unit/helpers/posts_helper_test.rb:1
        Exception message: no such file to load -- test_helper
          /Users/im/RubymineProjects/BackChannelApp/test/unit/helpers/posts_helper_test.rb:1:in `require'
          /Users/im/RubymineProjects/BackChannelApp/test/unit/helpers/posts_helper_test.rb:1:in `&lt;top (required)&gt;'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:48:in `require'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:48:in `block in load_scripts_to_object_space'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:40:in `each'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:40:in `load_scripts_to_object_space'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:101:in `&lt;top (required)&gt;'
          -e:1:in `load'
          -e:1:in `&lt;main&gt;'
  Fail to load: /Users/im/RubymineProjects/BackChannelApp/test/unit/helpers/users_helper_test.rb:1
        Exception message: no such file to load -- test_helper
          /Users/im/RubymineProjects/BackChannelApp/test/unit/helpers/users_helper_test.rb:1:in `require'
          /Users/im/RubymineProjects/BackChannelApp/test/unit/helpers/users_helper_test.rb:1:in `&lt;top (required)&gt;'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:48:in `require'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:48:in `block in load_scripts_to_object_space'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:40:in `each'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:40:in `load_scripts_to_object_space'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:101:in `&lt;top (required)&gt;'
          -e:1:in `load'
          -e:1:in `&lt;main&gt;'
  Fail to load: /Users/im/RubymineProjects/BackChannelApp/test/unit/post_test.rb:1
        Exception message: no such file to load -- test_helper
          /Users/im/RubymineProjects/BackChannelApp/test/unit/post_test.rb:4:in `require'
          /Users/im/RubymineProjects/BackChannelApp/test/unit/post_test.rb:4:in `&lt;top (required)&gt;'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:48:in `require'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:48:in `block in load_scripts_to_object_space'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:40:in `each'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:40:in `load_scripts_to_object_space'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:101:in `&lt;top (required)&gt;'
          -e:1:in `load'
          -e:1:in `&lt;main&gt;'
  Fail to load: /Users/im/RubymineProjects/BackChannelApp/test/unit/user_test.rb:1
        Exception message: no such file to load -- test_helper
          /Users/im/RubymineProjects/BackChannelApp/test/unit/user_test.rb:1:in `require'
          /Users/im/RubymineProjects/BackChannelApp/test/unit/user_test.rb:1:in `&lt;top (required)&gt;'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:48:in `require'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:48:in `block in load_scripts_to_object_space'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:40:in `each'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:40:in `load_scripts_to_object_space'
          /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:101:in `&lt;top (required)&gt;'
          -e:1:in `load'
          -e:1:in `&lt;main&gt;'
  Creating sqlite :memory: database
  -- create_table("posts", {:force=&gt;true})
     -&gt; 0.0346s
  -- create_table("users", {:force=&gt;true})
     -&gt; 0.0010s
  -- initialize_schema_migrations_table()
     -&gt; 0.0008s
  -- assume_migrated_upto_version(20110926132602, ["db/migrate"])
     -&gt; 0.0005s
  1. /Users/im/RubymineProjects/BackChannelApp/test/test_helper.rb:1
  
  1 files were loaded.
  =========================================
  Searching test suites...
  =========================================
  DEPRECATION WARNING: ActiveSupport::JSON::CircularReferenceError is deprecated! Use ActiveSupport::JSON::Encoding::CircularReferenceError instead. (called from is_test_case_class? at /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:80)
  DEPRECATION WARNING: ActiveSupport::JSON::CircularReferenceError is deprecated! Use ActiveSupport::JSON::Encoding::CircularReferenceError instead. (called from is_test_case_class? at /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:80)
  DEPRECATION WARNING: Fixtures is deprecated! Use ActiveRecord::Fixtures instead. (called from is_test_case_class? at /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:80)
  DEPRECATION WARNING: Fixtures is deprecated! Use ActiveRecord::Fixtures instead. (called from is_test_case_class? at /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:80)
  DEPRECATION WARNING: Fixture is deprecated! Use ActiveRecord::Fixture instead. (called from is_test_case_class? at /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:80)
  DEPRECATION WARNING: Fixture is deprecated! Use ActiveRecord::Fixture instead. (called from is_test_case_class? at /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:80)
  Test suite #1: ActionDispatch::IntegrationTest
  
  Ignored because it is default rails empty test suite
  =========================================
  Test suite #1: ActiveSupport::TestCase
  
  Ignored because it is default rails empty test suite
  =========================================
  Test suite #1: ActionController::TestCase
  
  Ignored because it is default rails empty test suite
  DEPRECATION WARNING: ActiveSupport::SecureRandom is deprecated! Use SecureRandom instead. (called from is_test_case_class? at /Applications/RubyMine 3.2.4.app/rb/testing/runner/tunit_in_folder_runner.rb:80)
  =========================================
  Test suite #1: ActiveRecord::TestCase
  
  Ignored because it is default rails empty test suite
  =========================================
  0 test suites, 0 tests, 0 assertions, 0 failures, 0 errors
  
  
  Process finished with exit code 0
  </code></pre>
  
  <p>What am I missing? 
  Thanks!</p>