Disable editing for inherited iterations

Inherited iterations should not allow editing as editing
should only happen at the source iteration

ee/app/assets/javascripts/iterations/components/iteration_report.vue

@@ -96,6 +96,9 @@ export default {
     };
   },
   computed: {
+    canEditIteration() {
+      return this.canEdit && this.namespaceType === Namespace.Group;
+    },
     hasIteration() {
       return !this.$apollo.queries.iteration.loading && this.iteration?.title;
     },
@@ -155,7 +158,7 @@ export default {
           >{{ formatDate(iteration.startDate) }} – {{ formatDate(iteration.dueDate) }}</span
         >
         <gl-new-dropdown
-          v-if="canEdit"
+          v-if="canEditIteration"
           variant="default"
           toggle-class="gl-text-decoration-none gl-border-0! gl-shadow-none!"
           class="gl-ml-auto gl-text-secondary"

ee/spec/features/groups/iterations/user_views_iteration_spec.rb

@@ -9,6 +9,7 @@ RSpec.describe 'User views iteration' do
   let_it_be(:project) { create(:project, group: group) }
   let_it_be(:sub_project) { create(:project, group: sub_group) }
   let_it_be(:user) { create(:group_member, :maintainer, user: create(:user), group: group).user }
+  let_it_be(:guest_user) { create(:group_member, :guest, user: create(:user), group: group).user }
   let_it_be(:iteration) { create(:iteration, :skip_future_date_validation, iid: 1, id: 2, group: group, title: 'Correct Iteration', start_date: now - 1.day, due_date: now) }
   let_it_be(:other_iteration) { create(:iteration, :skip_future_date_validation, iid: 2, id: 1, group: group, title: 'Wrong Iteration', start_date: now - 4.days, due_date: now - 3.days) }
   let_it_be(:sub_group_iteration) { create(:iteration, id: 3, group: sub_group) }
@@ -18,15 +19,13 @@ RSpec.describe 'User views iteration' do
   let_it_be(:sub_group_issue) { create(:issue, project: sub_project, iteration: iteration) }
   let_it_be(:other_issue) { create(:issue, project: project, iteration: other_iteration) }
 
-  context 'with license' do
-    before do
-      stub_licensed_features(iterations: true)
-      sign_in(user)
-    end
-
-    context 'view an iteration', :js do
+  context 'with license', :js do
+    context 'view an iteration' do
       before do
-        visit group_iteration_path(group, iteration.iid)
+        stub_licensed_features(iterations: true)
+        sign_in(user)
+
+        visit group_iteration_path(iteration.group, iteration.iid)
       end
 
       it 'shows iteration info and dates' do
@@ -51,6 +50,32 @@ RSpec.describe 'User views iteration' do
         expect(page).not_to have_content(other_issue.title)
       end
     end
+
+    context 'when user has edit permissions' do
+      before do
+        stub_licensed_features(iterations: true)
+        sign_in(user)
+
+        visit group_iteration_path(iteration.group, iteration.iid)
+      end
+
+      it 'shows action dropdown for editing the iteration' do
+        expect(page).to have_button('Actions')
+      end
+    end
+
+    context 'when user does not have edit permissions' do
+      before do
+        stub_licensed_features(iterations: true)
+        sign_in(guest_user)
+
+        visit group_iteration_path(iteration.group, iteration.iid)
+      end
+
+      it 'hides action dropdown for editing the iteration' do
+        expect(page).not_to have_button('Actions')
+      end
+    end
   end
 
   context 'without license' do

ee/spec/features/projects/iterations/user_views_iteration_spec.rb

@@ -46,6 +46,10 @@ RSpec.describe 'User views iteration' do
         expect(page).to have_content(closed_issue.title)
         expect(page).not_to have_content(other_issue.title)
       end
+
+      it 'hides action dropdown for editing the iteration' do
+        expect(page).not_to have_button('Actions')
+      end
     end
   end
 

ee/spec/frontend/iterations/components/iteration_report_spec.js

 import { shallowMount } from '@vue/test-utils';
-import { GlEmptyState, GlLoadingIcon, GlTab, GlTabs } from '@gitlab/ui';
+import { GlNewDropdown, GlEmptyState, GlLoadingIcon, GlTab, GlTabs } from '@gitlab/ui';
 import IterationReport from 'ee/iterations/components/iteration_report.vue';
 import IterationReportSummary from 'ee/iterations/components/iteration_report_summary.vue';
 import IterationReportTabs from 'ee/iterations/components/iteration_report_tabs.vue';
@@ -108,5 +108,36 @@ describe('Iterations report', () => {
       expect(iterationReportTabs.props('iterationId')).toBe(iteration.id);
       expect(iterationReportTabs.props('namespaceType')).toBe(Namespace.Group);
     });
+
+    describe('actions dropdown to edit iteration', () => {
+      describe.each`
+        description                    | canEdit  | namespaceType        | canEditIteration
+        ${'has permissions'}           | ${true}  | ${Namespace.Group}   | ${true}
+        ${'has permissions'}           | ${true}  | ${Namespace.Project} | ${false}
+        ${'does not have permissions'} | ${false} | ${Namespace.Group}   | ${false}
+        ${'does not have permissions'} | ${false} | ${Namespace.Project} | ${false}
+      `(
+        'when user $description and they are viewing an iteration within a $namespaceType',
+        ({ canEdit, namespaceType, canEditIteration }) => {
+          beforeEach(() => {
+            mountComponent({
+              props: {
+                ...defaultProps,
+                canEdit,
+                namespaceType,
+              },
+            });
+
+            wrapper.setData({
+              iteration,
+            });
+          });
+
+          it(`${canEditIteration ? 'is shown' : 'is hidden'}`, () => {
+            expect(wrapper.contains(GlNewDropdown)).toBe(canEditIteration);
+          });
+        },
+      );
+    });
   });
 });