refactor: MR can be from a fork or the same project

src/data_providers/items/mr_item_model.test.ts

 import * as vscode from 'vscode';
 import { MrItemModel } from './mr_item_model';
-import { mr, repository } from '../../test_utils/entities';
+import { mr } from '../../test_utils/entities';
 import {
   discussionOnDiff,
   noteOnDiffTextSnippet,
@@ -9,6 +9,7 @@ import {
 import { CommentingRangeProvider } from '../../review/commenting_range_provider';
 import { createWrappedRepository } from '../../test_utils/create_wrapped_repository';
 import { fromReviewUri } from '../../review/review_uri';
+import { WrappedRepository } from '../../git/wrapped_repository';
 
 const createCommentControllerMock = vscode.comments.createCommentController as jest.Mock;
 
@@ -18,6 +19,7 @@ describe('MrItemModel', () => {
   let canUserCommentOnMr = false;
   let commentController: any;
   let gitLabService: any;
+  let repository: WrappedRepository;
 
   const createCommentThreadMock = jest.fn();
 
@@ -27,7 +29,7 @@ describe('MrItemModel', () => {
       getMrDiff: jest.fn().mockResolvedValue({ diffs: [] }),
       canUserCommentOnMr: jest.fn(async () => canUserCommentOnMr),
     };
-    const repository = createWrappedRepository({
+    repository = createWrappedRepository({
       gitLabService,
     });
     item = new MrItemModel(mr, repository);
@@ -45,6 +47,24 @@ describe('MrItemModel', () => {
     createCommentThreadMock.mockReset();
   });
 
+  describe('MR item context', () => {
+    it('should return return correct context when MR comes from the same project', () => {
+      item = new MrItemModel(
+        { ...mr, source_project_id: 1234, target_project_id: 1234 },
+        repository,
+      );
+      expect(item.getTreeItem().contextValue).toBe('mr-item-from-same-project');
+    });
+
+    it('should return return correct context when MR comes from a fork', () => {
+      item = new MrItemModel(
+        { ...mr, source_project_id: 5678, target_project_id: 1234 },
+        repository,
+      );
+      expect(item.getTreeItem().contextValue).toBe('mr-item-from-fork');
+    });
+  });
+
   it('should add comment thread to VS Code', async () => {
     await item.getChildren();
     expect(createCommentControllerMock).toBeCalledWith(

src/data_providers/items/mr_item_model.ts

@@ -58,6 +58,7 @@ export class MrItemModel extends ItemModel {
     if (author.avatar_url) {
       item.iconPath = vscode.Uri.parse(author.avatar_url);
     }
+    item.contextValue = `mr-item-from-${this.isFromFork ? 'fork' : 'same-project'}`;
     return item;
   }
 
@@ -121,4 +122,8 @@ export class MrItemModel extends ItemModel {
       );
     });
   }
+
+  get isFromFork(): boolean {
+    return this.mr.target_project_id !== this.mr.source_project_id;
+  }
 }

src/test_utils/entities.ts

@@ -30,6 +30,8 @@ export const mr: RestMr = {
     full: 'gitlab-org/gitlab!2000',
   },
   sha: '69ad609e8891b8aa3db85a35cd2c5747705bd76a',
+  source_project_id: 9999,
+  target_project_id: 9999,
 };
 
 export const diffFile: RestDiffFile = {

src/types.d.ts

@@ -23,6 +23,8 @@ interface RestIssuable {
 
 interface RestMr extends RestIssuable {
   sha: string;
+  source_project_id: number;
+  target_project_id: number;
 }
 
 interface RestMrVersion {