Fix design overlay test case without adminNote

Here we improve the test case for when we are
trying to ensure that a user without adminNote
permission is unable to move an existing note.

Previously, we were testing arbitrary details of the
component. Here, we simplify to test only
the outcome w.r.t the DOM (in this case,
the element's `style` tag).

app/assets/javascripts/design_management/components/design_notes/design_discussion.vue

@@ -63,10 +63,12 @@ export default {
       query: activeDiscussionQuery,
       result({ data }) {
         const discussionId = data.activeDiscussion.id;
+        if (this.discussion.resolved && !this.resolvedDiscussionsExpanded) {
+          return;
+        }
         // We watch any changes to the active discussion from the design pins and scroll to this discussion if it exists
         // We don't want scrollIntoView to be triggered from the discussion click itself
         if (
-          this.resolvedDiscussionsExpanded &&
           discussionId &&
           data.activeDiscussion.source === ACTIVE_DISCUSSION_SOURCE_TYPES.pin &&
           discussionId === this.discussion.notes[0].id

app/assets/javascripts/design_management/components/design_overlay.vue

@@ -144,7 +144,7 @@ export default {
     },
     onExistingNoteMove(e) {
       const note = this.notes.find(({ id }) => id === this.movingNoteStartPosition.noteId);
-      if (!note) return;
+      if (!note || !this.canMoveNote(note)) return;
 
       const { position } = note;
       const { width, height } = position;
@@ -190,8 +190,6 @@ export default {
       });
     },
     onNoteMousedown({ clientX, clientY }, note) {
-      if (note && !this.canMoveNote(note)) return;
-
       this.movingNoteStartPosition = {
         noteId: note?.id,
         discussionId: note?.discussion.id,

changelogs/unreleased/ntepluhina-fix-note-scrolling.yml

+---
+title: Fix design note scrolling
+merge_request: 33939
+author:
+type: fixed

spec/frontend/design_management/components/design_overlay_spec.js

@@ -10,18 +10,6 @@ describe('Design overlay component', () => {
   let wrapper;
 
   const mockDimensions = { width: 100, height: 100 };
-  const mockNoteNotAuthorised = {
-    id: 'note-not-authorised',
-    index: 1,
-    discussion: { id: 'discussion-not-authorised' },
-    position: {
-      x: 1,
-      y: 80,
-      ...mockDimensions,
-    },
-    userPermissions: {},
-    resolved: false,
-  };
 
   const findOverlay = () => wrapper.find('.image-diff-overlay');
   const findAllNotes = () => wrapper.findAll('.js-image-badge');
@@ -230,20 +218,32 @@ describe('Design overlay component', () => {
         });
     });
 
-    it('should do nothing if [adminNote] permission is not present', () => {
+    describe('without [adminNote] permission', () => {
+      const mockNoteNotAuthorised = {
+        ...notes[0],
+        userPermissions: {
+          adminNote: false,
+        },
+      };
+
+      const mockNoteCoordinates = {
+        x: mockNoteNotAuthorised.position.x,
+        y: mockNoteNotAuthorised.position.y,
+      };
+
+      it('should be unable to move a note', () => {
         createComponent({
           dimensions: mockDimensions,
           notes: [mockNoteNotAuthorised],
         });
 
         const badge = findAllNotes().at(0);
-      return clickAndDragBadge(
-        badge,
-        { x: mockNoteNotAuthorised.x, y: mockNoteNotAuthorised.y },
-        { x: 20, y: 20 },
-      ).then(() => {
-        expect(wrapper.vm.movingNoteStartPosition).toBeNull();
-        expect(findFirstBadge().attributes().style).toBe('left: 1px; top: 80px;');
+        return clickAndDragBadge(badge, { ...mockNoteCoordinates }, { x: 20, y: 20 }).then(() => {
+          // note position should not change after a click-and-drag attempt
+          expect(findFirstBadge().attributes().style).toContain(
+            `left: ${mockNoteCoordinates.x}px; top: ${mockNoteCoordinates.y}px;`,
+          );
+        });
       });
     });
   });