Remove group-level licensed features from boards

Public projects under free tier namespace are
only entitled to the project-level features of Ultimate.

Group-level Ultimate features need to be checked
at the namespace level and hidden appropriately.

app/helpers/boards_helper.rb

@@ -89,6 +89,10 @@ module BoardsHelper
     @current_board_parent ||= @group || @project
   end
 
+  def current_board_namespace
+    @current_board_namespace = board.group_board? ? @group : @project.namespace
+  end
+
   def can_update?
     can?(current_user, :admin_issue, board)
   end

ee/app/helpers/ee/boards_helper.rb

@@ -25,22 +25,33 @@ module EE
         label_ids: board.label_ids,
         labels: board.labels.to_json(only: [:id, :title, :color, :text_color] ),
         board_weight: board.weight,
-        multiple_assignees_feature_available: current_board_parent.feature_available?(:multiple_issue_assignees).to_s,
-        weight_feature_available: current_board_parent.feature_available?(:issue_weights).to_s,
-        milestone_lists_available: current_board_parent.feature_available?(:board_milestone_lists).to_s,
-        assignee_lists_available: current_board_parent.feature_available?(:board_assignee_lists).to_s,
-        iteration_lists_available: current_board_parent.feature_available?(:board_iteration_lists).to_s,
-        epic_feature_available: current_board_parent.feature_available?(:epics).to_s,
-        iteration_feature_available: current_board_parent.feature_available?(:iterations).to_s,
         show_promotion: show_feature_promotion,
-        scoped_labels: current_board_parent.feature_available?(:scoped_labels)&.to_s,
         can_update: can_update?.to_s,
         can_admin_list: can_admin_list?.to_s,
         disabled: disabled?.to_s,
         emails_disabled: current_board_parent.emails_disabled?.to_s
       }
 
-      super.merge(data)
+      super.merge(data).merge(licensed_features).merge(group_level_features)
+    end
+
+    def licensed_features
+      # These features are available at both project- and group-level
+      {
+        multiple_assignees_feature_available: current_board_parent.feature_available?(:multiple_issue_assignees).to_s,
+        weight_feature_available: current_board_parent.feature_available?(:issue_weights).to_s,
+        milestone_lists_available: current_board_parent.feature_available?(:board_milestone_lists).to_s,
+        assignee_lists_available: current_board_parent.feature_available?(:board_assignee_lists).to_s,
+        scoped_labels: current_board_parent.feature_available?(:scoped_labels)&.to_s
+      }
+    end
+
+    def group_level_features
+      {
+        iteration_lists_available: current_board_namespace.feature_available?(:board_iteration_lists).to_s,
+        epic_feature_available: current_board_namespace.feature_available?(:epics).to_s,
+        iteration_feature_available: current_board_namespace.feature_available?(:iterations).to_s
+      }
     end
 
     override :can_update?

ee/spec/features/boards/boards_licensed_features_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Boards licensed features', :js do
+  include BoardHelpers
+
+  let_it_be(:user) { create(:user) }
+
+  let(:card) { find('.board:nth-child(1)').find('[data-testid="board_card"]') }
+
+  before do
+    sign_in user
+  end
+
+  context "Project board sidebar" do
+    shared_examples "hides group-level licensed features in sidebar" do
+      before do
+        visit project_board_path(project, board)
+        wait_for_requests
+
+        click_card(card)
+      end
+
+      it "hides epic widget" do
+        expect(page).not_to have_selector('[data-testid="sidebar-epic"]')
+      end
+
+      it "hides iteration widget" do
+        expect(page).not_to have_selector('[data-testid="iteration-edit-link"]')
+      end
+    end
+
+    shared_context "project issue board" do
+      let_it_be(:issue) { create(:issue, project: project) }
+      let_it_be(:board) { create(:board, project: project) }
+      let_it_be(:list) { create(:backlog_list, board: board) }
+    end
+
+    context "GitLab SaaS" do
+      let_it_be(:plan_license) { :free }
+      let_it_be(:global_license) { create(:license) }
+
+      before do
+        enable_namespace_license_check!
+        allow(License).to receive(:current).and_return(global_license)
+        allow(global_license).to receive(:features).and_return([
+          :epics,
+          :iterations
+          ])
+      end
+
+      context "Public project under Free plan under group namespace" do
+        let_it_be(:group) { create(:group, :public) }
+        let_it_be(:project) { create(:project, :public, group: group) }
+        let_it_be(:gitlab_subscription) { create(:gitlab_subscription, :free, namespace: group) }
+
+        include_context "project issue board"
+
+        before do
+          group.add_owner(user)
+        end
+
+        include_examples "hides group-level licensed features in sidebar"
+      end
+
+      context "Public project under Free plan under user namespace" do
+        let_it_be(:project) { create(:project, :public, namespace: user.namespace) }
+        let_it_be(:gitlab_subscription) { create(:gitlab_subscription, :free, namespace: user.namespace) }
+
+        include_context "project issue board"
+
+        include_examples "hides group-level licensed features in sidebar"
+      end
+    end
+  end
+end

ee/spec/helpers/boards_helper_spec.rb

@@ -3,9 +3,9 @@
 require 'spec_helper'
 
 RSpec.describe BoardsHelper do
-  let_it_be(:project) { create(:project) }
   let_it_be(:group) { create(:group) }
   let_it_be(:user) { create(:user) }
+  let_it_be_with_refind(:project) { create(:project) }
   let_it_be(:project_board) { create(:board, project: project) }
 
   describe '#board_list_data' do
@@ -105,15 +105,22 @@ RSpec.describe BoardsHelper do
         end
       end
 
-      [[:multiple_issue_assignees, :multiple_assignees_feature_available],
-       [:issue_weights, :weight_feature_available],
-       [:board_milestone_lists, :milestone_lists_available],
-       [:board_assignee_lists, :assignee_lists_available],
-       [:board_iteration_lists, :iteration_lists_available],
-       [:epics, :epic_feature_available],
-       [:iterations, :iteration_feature_available],
-       [:scoped_labels, :scoped_labels]].each do |feature_name, feature_key|
-        include_examples "serializes the availability of a licensed feature", feature_name, feature_key
+      context "group and project-level licensed features" do
+        [[:multiple_issue_assignees, :multiple_assignees_feature_available],
+         [:issue_weights, :weight_feature_available],
+         [:board_milestone_lists, :milestone_lists_available],
+         [:board_assignee_lists, :assignee_lists_available],
+         [:scoped_labels, :scoped_labels]].each do |feature_name, feature_key|
+          include_examples "serializes the availability of a licensed feature", feature_name, feature_key
+        end
+      end
+
+      context "group-level licensed features" do
+        [[:board_iteration_lists, :iteration_lists_available],
+         [:epics, :epic_feature_available],
+         [:iterations, :iteration_feature_available]].each do |feature_name, feature_key|
+          include_examples "serializes the availability of a licensed feature", feature_name, feature_key
+        end
       end
     end
 

spec/helpers/boards_helper_spec.rb

@@ -36,7 +36,7 @@ RSpec.describe BoardsHelper do
   end
 
   describe '#board_base_url' do
-    context 'when project board' do
+    context 'when group board' do
       it 'generates the correct url' do
         assign(:board, group_board)
         assign(:group, base_group)
@@ -55,6 +55,43 @@ RSpec.describe BoardsHelper do
     end
   end
 
+  describe '#current_board_namespace' do
+    context 'when group board' do
+      it 'returns the correct namespace' do
+        assign(:board, group_board)
+        assign(:group, base_group)
+
+        expect(helper.current_board_namespace).to be(base_group)
+      end
+    end
+
+    context 'project under group' do
+      context 'when project board' do
+        it 'returns the correct namespace' do
+          assign(:project, project)
+          assign(:board, project_board)
+
+          expect(helper.current_board_namespace).to be(project.parent)
+        end
+      end
+    end
+
+    context 'project under user namespace' do
+      let_it_be(:project_under_user) { create(:project, namespace: user.namespace) }
+
+      context 'when project board' do
+        let_it_be(:project_board) { create(:board, project: project_under_user) }
+
+        it 'returns the correct namespace' do
+          assign(:project, project_under_user)
+          assign(:board, project_board)
+
+          expect(helper.current_board_namespace).to be(user.namespace)
+        end
+      end
+    end
+  end
+
   describe '#board_data' do
     context 'project_board' do
       before do