login method does not assign a value to session[:_csrf_token]

ref: #371

Author: willnet

spec/controllers/controller_spec.rb

@@ -101,10 +101,6 @@
         it 'writes user id in session' do
           expect(session[:user_id]).to eq user.id.to_s
         end
-
-        it 'sets csrf token in session' do
-          expect(session[:_csrf_token]).not_to be_nil
-        end
       end
 
       context 'when fails' do
@@ -131,10 +127,6 @@
           expect(session[:user_id]).to eq user.id.to_s
         end
 
-        it 'sets csrf token in session' do
-          expect(session[:_csrf_token]).not_to be_nil
-        end
-
         it 'redirects to root' do
           expect(response).to redirect_to(root_url)
         end