Rspec uninitialized constant NameError, when not requiring Rails -

i'm trying speed tests not requiring rails. moving things modules , testing separately. things faster, yay (if little confusing)...

the issue have right when module requires module.

my guard tests pass however, when running rspec, following:

uninitialized constant useralerts::usermailerhelper (nameerror) 

my useralerts module looks this:

module useralerts    include usermailerhelper    def state_events(params)     .. stuff ...     state_events_email(emails, params)   end    def state_events_email(emails, params)     emails.each |email|       send_message(email, params)     end   end 

and usermailerhelper so:

module usermailerhelper    def send_message(email, params={})     send...   end  end 

in spec/lib/user_alerts.rb test, have this:

require file.expand_path("../../../app/lib/user_alerts", __file__)  class biscuit   include useralerts end  describe useralerts    context "finds users send emails to"      "should return users email"       users = [stub(:email => email, beta: true, system_alerts: 'email'),                stub(:email => email, beta: false, system_alerts: 'sms')]       bis = biscuit.new       bis.stub(:users) { users }       ...     end   end end 

i run rspec follows:

rspec -i . ./spec/lib/user_alerts_spec.rb 

what should rspec pick module??