fix(apsystem.test): add test to check auto-accept remote deletes

src/server/apsystem.test.ts

@@ -484,6 +484,70 @@ test('ActivityPubSystem - Interacted store', async t => {
   }
 })
 
+test('ActivityPubSystem - Handle Delete activity', async t => {
+  const store = newStore()
+  const mockFetch = new MockFetch()
+  const hookSystem = new HookSystem(store, mockFetch.fetch as FetchLike)
+  const aps = new ActivityPubSystem(
+    'http://localhost',
+    store,
+    mockModCheck,
+    hookSystem,
+    mockLog,
+    mockFetch.fetch as FetchLike
+  )
+
+  const actorMention = '@[email protected]';
+  const actorUrl = 'https://example.com/actor/user1';
+  const activityId = 'https://example.com/activity1';
+
+  await store.forActor(actorMention).setInfo({
+    keypair: { ...generateKeypair() },
+    actorUrl: actorUrl,
+    publicKeyId: 'testAccount#main-key'
+  });
+
+  mockFetch.mockActor(actorMention);
+
+  const activity: APActivity = {
+    '@context': 'https://www.w3.org/ns/activitystreams',
+    type: 'Like',
+    published: new Date().toISOString(),
+    actor: actorUrl,
+    object: 'https://example.com/note1',
+    id: activityId
+  };
+  await store.forActor(actorMention).inbox.add(activity);
+
+  const deleteActivity: APActivity = {
+    '@context': 'https://www.w3.org/ns/activitystreams',
+    type: 'Delete',
+    published: new Date().toISOString(),
+    actor: actorUrl,
+    object: activityId,
+    id: 'https://example.com/activity2'
+  };
+
+  await aps.ingestActivity(actorMention, deleteActivity);
+
+  try {
+    await store.forActor(actorMention).inbox.get(activityId);
+    t.fail('The activity should be deleted from the inbox');
+  } catch (error) {
+    if (error instanceof Error) {
+      t.true(error.message.includes('Activity not found'), 'The activity should be deleted from the inbox');
+    } else {
+      t.fail('Unexpected error type');
+    }
+  }
+
+  const storedActivities = await store.forActor(actorMention).inbox.list({ object: activityId });
+  const isActivityPresent = storedActivities.some((a) => a.id === activityId);
+  t.falsy(isActivityPresent, 'The activity should be removed from the index/collection');
+
+  t.assert(mockFetch.history.includes(`https://example.com/actor/user1/inbox`));
+});
+
 // After all tests, restore all sinon mocks
 test.afterEach(() => {
   // Restore all sinon mocks