Disable Update now button when project is archived with a tooltip

- also, fix up a spec that doesn't really test what it says

ee/app/views/projects/mirrors/_table_pull_row.html.haml

@@ -22,7 +22,9 @@
         = clipboard_button(text: ssh_public_key, class: 'btn btn-default rspec-copy-ssh-public-key', title: _('Copy SSH public key'), qa_selector: 'copy_public_key_button')
       - if import_state.mirror_update_due? || import_state.updating_mirror?
         %button.btn.disabled{ type: 'button', data: { container: 'body', toggle: 'tooltip', qa_selector: 'updating_button' }, title: _('Updating') }= icon("refresh spin")
-      - elsif !@project.archived?
+      - elsif @project.archived?
+        %button.btn.disabled{ type: 'button', data: { container: 'body', toggle: 'tooltip', qa_selector: 'update_now_button' }, title: _('This Project is currently archived and read-only. Please unarchive the project first if you want to resume Pull mirroring') }= icon("refresh")
+      - else
         = link_to update_now_project_mirror_path(@project), method: :post, class: 'btn js-force-update-mirror', data: { container: 'body', toggle: 'tooltip', qa_selector: 'update_now_button' }, title: _('Update now') do
           = icon("refresh")
       %button.js-delete-mirror.js-delete-pull-mirror.btn.btn-danger{ type: 'button', data: { toggle: 'tooltip', container: 'body' }, title: _('Remove') }= icon('trash-o')

ee/spec/features/projects/mirror_spec.rb

@@ -24,8 +24,6 @@ describe 'Project mirror', :js do
 
       context 'when able to force update' do
         it 'forces import' do
-          import_state.update(last_update_at: timestamp - 8.minutes)
-
           expect_any_instance_of(EE::ProjectImportState).to receive(:force_import_job!)
 
           Timecop.freeze(timestamp) do
@@ -37,17 +35,32 @@ describe 'Project mirror', :js do
       end
 
       context 'when unable to force update' do
-        it 'does not force import' do
-          import_state.update(last_update_at: timestamp - 3.minutes)
+        before do
+          import_state.update(next_execution_timestamp: timestamp - 1.minute)
+        end
 
-          expect_any_instance_of(EE::ProjectImportState).not_to receive(:force_import_job!)
+        let(:disabled_updating_button) { '[data-qa-selector="updating_button"].disabled' }
 
+        it 'disables Update now button' do
           Timecop.freeze(timestamp) do
             visit project_mirror_path(project)
           end
 
-          expect(page).to have_selector('.js-force-update-mirror')
-          expect(page).to have_selector('.btn.disabled')
+          expect(page).to have_selector(disabled_updating_button)
+        end
+      end
+
+      context 'when the project is archived' do
+        let(:disabled_update_now_button) { '[data-qa-selector="update_now_button"].disabled' }
+
+        before do
+          project.update!(archived: true)
+        end
+
+        it 'disables Update now button' do
+          visit project_mirror_path(project)
+
+          expect(page).to have_selector(disabled_update_now_button)
         end
       end
     end

locale/gitlab.pot

@@ -19227,6 +19227,9 @@ msgstr ""
 msgid "This GitLab instance is licensed at the %{insufficient_license} tier. Geo is only available for users who have at least a Premium license."
 msgstr ""
 
+msgid "This Project is currently archived and read-only. Please unarchive the project first if you want to resume Pull mirroring"
+msgstr ""
+
 msgid "This action can lead to data loss. To prevent accidental actions we ask you to confirm your intention."
 msgstr ""