fixing tests p3

spec/controllers/exercises_controller_spec.rb

@@ -230,11 +230,14 @@ describe ExercisesController do
   describe 'POST #submit' do
     let(:output) { {} }
     let(:request) { post :submit, format: :json, id: exercise.id, submission: {cause: 'submit', exercise_id: exercise.id} }
+    let!(:external_user) { FactoryGirl.create(:external_user) }
+    let!(:lti_parameter) { FactoryGirl.create(:lti_parameter) }
 
     before(:each) do
       allow_any_instance_of(Submission).to receive(:normalized_score).and_return(1)
       expect(controller).to receive(:collect_test_results).and_return([{score: 1, weight: 1}])
       expect(controller).to receive(:score_submission).and_call_original
+      controller.session[:consumer_id] = external_user.consumer_id
     end
 
     context 'when LTI outcomes are supported' do