ruby on rails - spec/helpers/application_helper_spec.rb cannot pass: undefined method `load_session' for nil:NilClass -

i'm rails newbie, , following michael hartl's rails tutorial. i'm having trouble getting rspec past in 5th chapter. here troublesome spec/helpers/application_helper_spec.rb:

require 'spec_helper' describe applicationhelper   describe "full_title"     "should include page title"       full_title("foo").should =~ /foo/     end   end end 

and bin/rspec spec/helpers/application_helper_spec.rb gives:

failure/error: unable find matching line backtrace      nomethoderror:        undefined method `load_session' nil:nilclass 

i have applicationhelper defined in app/helper/application_helper.rb, , test in spec/requests past without problems. idea what's going on? in advance!

and here app/helper/application_helper.rb

module applicationhelper   # returns full title on per-page basis.   def full_title(page_title)     base_title = "ruby on rails tutorial sample app"     if page_title.empty?       base_title     else       "#{base_title} | #{page_title}"     end   end end 

in case want it, here's spec/spec_helper.rb: http://dpaste.com/1309484/

and version of gems: http://dpaste.com/hold/1309485/

edited

well, figured spork problem, i'm not sure, cause if replace require "spec_helper" line this:

require "/home/charlie/rails_projects/sample_app/app/helpers/application_helper.rb" rspec.configure |c|    c.include applicationhelper end 

the test pasts. , spec_helper set spork. there wrong spec_helper.rb?

it seems can solved updating guard-spork 1.4.2, ,

bundle install