it "ignores trailing spaces and spaces between commas" do
      relatable.related_sdg_list = " 1.1,  2.3 "

      expect(relatable.reload.sdg_goals).to match_array [SDG::Goal[1], SDG::Goal[2]]
      expect(relatable.reload.sdg_targets).to match_array [SDG::Target[1.1], SDG::Target[2.3]]