title: Running rake test and Rails 'cannot load such file -- rails/performance_test_help
body: <p>I am trying to run a rake test and I am unable to do it.  I keep getting this error:
  ActiveRecord::SchemaMigration Load (0.1ms)  SELECT "schema_migrations".* FROM "schema_migrations"
  rake aborted!
  LoadError: cannot load such file -- rails/performance_test_help</p>
  
  <p>I would greatly appreciate any insight.</p>