add checks to controller spec

spec/controller/admin/codes_controller_spec.rb

@@ -9,17 +9,36 @@ module Admin
         routes { Decidim::AnonymousCodes::AdminEngine.routes }
         let(:current_user) { create(:user, :confirmed, :admin, organization: current_organization) }
         let(:current_organization) { create(:organization) }
-        let(:component) { survey.component }
-        let!(:survey) { create(:survey) }
-        let!(:existing_group) { create(:anonymous_codes_group, title: { en: "Existing group" }, organization: organization, resource: survey) }
-        let!(:existing_empty_group) { create(:anonymous_codes_group, title: { en: "Existing empty group" }, organization: organization, resource: survey) }
-        let!(:anonymous_codes_token1) { create(:anonymous_codes_token, group: existing_group) }
-        let!(:anonymous_codes_token2) { create(:anonymous_codes_token, :used, group: existing_group) }
+        let!(:group) { create(:anonymous_codes_group, expires_at: 1.day.from_now, active: true, max_reuses: 10, organization: current_organization) }
 
         before do
           request.env["decidim.current_organization"] = current_organization
           sign_in current_user, scope: :user
         end
+
+        describe "GET #index" do
+          let!(:token1) { Token.create(group: group, created_at: 2.days.ago) }
+          let!(:token2) { Token.create(group: group, created_at: 1.day.ago) }
+
+          it "enforces permission to view anonymous code tokens" do
+            expect(controller).to receive(:enforce_permission_to).with(:view, :anonymous_code_token)
+            get :index, params: { code_group_id: code_group.id }
+          end
+
+          it "assigns @tokens with paginated tokens ordered by creation date" do
+            token1
+            token2
+
+            get :index, params: { code_group_id: code_group.id }
+
+            expect(assigns(:tokens)).to eq([token2, token1])
+          end
+
+          it "renders the index template" do
+            get :index, params: { code_group_id: code_group.id }
+            expect(response).to render_template(:index)
+          end
+        end
       end
     end
   end