#18 Add sql index for unpublished exercises

And remove spec for remove feature

spec/controllers/request_for_comments_controller_spec.rb

@@ -0,0 +1,46 @@
+require 'rails_helper'
+
+describe RequestForCommentsController do
+  let(:user) { FactoryBot.create(:admin) }
+
+  before { allow(controller).to receive(:current_user).and_return(user) }
+
+  describe 'GET #index' do
+    it 'renders the index template' do
+      get :index
+
+      expect(response).to have_http_status :ok
+      expect(response).to render_template :index
+    end
+
+    it 'shows only rfc`s belonging to selected study group' do
+      my_study_group = FactoryBot.create(:study_group)
+      rfc_within_my_study_group = FactoryBot.create(:rfc, user: user)
+      user.update(study_groups: [my_study_group])
+      rfc_within_my_study_group.submission.update(study_group: my_study_group)
+
+      another_study_group = FactoryBot.create(:study_group)
+      rfc_other_study_group = FactoryBot.create(:rfc)
+      rfc_other_study_group.user.update(study_groups: [another_study_group])
+      rfc_other_study_group.submission.update(study_group: another_study_group)
+
+      get :index, params: {"q[submission_study_group_id_in][]": my_study_group.id}
+
+      expect(assigns(:request_for_comments)).to eq([rfc_within_my_study_group])
+    end
+  end
+
+  describe 'GET #get_my_comment_requests' do
+    before { get :get_my_comment_requests }
+
+    expect_status(200)
+    expect_template(:index)
+  end
+
+  describe 'GET #get_rfcs_with_my_comments' do
+    before { get :get_rfcs_with_my_comments }
+
+    expect_status(200)
+    expect_template(:index)
+  end
+end