Improve spec coverage for collection of workers/ classes (#27874)

spec/workers/activitypub/post_upgrade_worker_spec.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe ActivityPub::PostUpgradeWorker do
+  let(:worker) { described_class.new }
+
+  describe '#perform' do
+    let(:domain) { 'host.example' }
+
+    it 'updates relevant values' do
+      account = Fabricate(:account, domain: domain, last_webfingered_at: 1.day.ago, protocol: :ostatus)
+      worker.perform(domain)
+
+      expect(account.reload.last_webfingered_at).to be_nil
+    end
+  end
+end

spec/workers/activitypub/synchronize_featured_tags_collection_worker_spec.rb

@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe ActivityPub::SynchronizeFeaturedTagsCollectionWorker do
+  let(:worker) { described_class.new }
+  let(:service) { instance_double(ActivityPub::FetchFeaturedTagsCollectionService, call: true) }
+
+  describe '#perform' do
+    before do
+      allow(ActivityPub::FetchFeaturedTagsCollectionService).to receive(:new).and_return(service)
+    end
+
+    let(:account) { Fabricate(:account) }
+    let(:url) { 'https://host.example' }
+
+    it 'sends the account and url to the service' do
+      worker.perform(account.id, url)
+
+      expect(service).to have_received(:call).with(account, url)
+    end
+
+    it 'returns true for non-existent record' do
+      result = worker.perform(123_123_123, url)
+
+      expect(result).to be(true)
+    end
+  end
+end