ActivityPub delivery (#4566)

* Deliver ActivityPub Like

* Deliver ActivityPub Undo-Like

* Deliver ActivityPub Create/Announce activities

* Deliver ActivityPub creates from mentions

* Deliver ActivityPub Block/Undo-Block

* Deliver ActivityPub Accept/Reject-Follow

* Deliver ActivityPub Undo-Follow

* Deliver ActivityPub Follow

* Deliver ActivityPub Delete activities

Incidentally fix #889

* Adjust BatchedRemoveStatusService for ActivityPub

* Add tests for ActivityPub workers

* Add tests for FollowService

* Add tests for FavouriteService, UnfollowService and PostStatusService

* Add tests for ReblogService, BlockService, UnblockService, ProcessMentionsService

* Add tests for AuthorizeFollowService, RejectFollowService, RemoveStatusService

* Add tests for BatchedRemoveStatusService

* Deliver updates to a local account to ActivityPub followers

* Minor adjustments

1 files changed, 48 insertions, 0 deletions

diff --git a/spec/workers/activitypub/distribution_worker_spec.rb b/spec/workers/activitypub/distribution_worker_spec.rb
new file mode 100644
index 000000000..368ca025a
--- /dev/null
+++ b/spec/workers/activitypub/distribution_worker_spec.rb
@@ -0,0 +1,48 @@
+require 'rails_helper'
+
+describe ActivityPub::DistributionWorker do
+  subject { described_class.new }
+
+  let(:status)   { Fabricate(:status) }
+  let(:follower) { Fabricate(:account, protocol: :activitypub, inbox_url: 'http://example.com') }
+
+  describe '#perform' do
+    before do
+      allow(ActivityPub::DeliveryWorker).to receive(:push_bulk)
+      follower.follow!(status.account)
+    end
+
+    context 'with public status' do
+      before do
+        status.update(visibility: :public)
+      end
+
+      it 'delivers to followers' do
+        subject.perform(status.id)
+        expect(ActivityPub::DeliveryWorker).to have_received(:push_bulk).with(['http://example.com'])
+      end
+    end
+
+    context 'with private status' do
+      before do
+        status.update(visibility: :private)
+      end
+
+      it 'delivers to followers' do
+        subject.perform(status.id)
+        expect(ActivityPub::DeliveryWorker).to have_received(:push_bulk).with(['http://example.com'])
+      end
+    end
+
+    context 'with direct status' do
+      before do
+        status.update(visibility: :direct)
+      end
+
+      it 'does nothing' do
+        subject.perform(status.id)
+        expect(ActivityPub::DeliveryWorker).to_not have_received(:push_bulk)
+      end
+    end
+  end
+end