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

spec/workers/account_refresh_worker_spec.rb

@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe AccountRefreshWorker do
+  let(:worker) { described_class.new }
+  let(:service) { instance_double(ResolveAccountService, call: true) }
+
+  describe '#perform' do
+    before do
+      allow(ResolveAccountService).to receive(:new).and_return(service)
+    end
+
+    context 'when account does not exist' do
+      it 'returns immediately without processing' do
+        worker.perform(123_123_123)
+
+        expect(service).to_not have_received(:call)
+      end
+    end
+
+    context 'when account exists' do
+      context 'when account does not need refreshing' do
+        let(:account) { Fabricate(:account, last_webfingered_at: recent_webfinger_at) }
+
+        it 'returns immediately without processing' do
+          worker.perform(account.id)
+
+          expect(service).to_not have_received(:call)
+        end
+      end
+
+      context 'when account needs refreshing' do
+        let(:account) { Fabricate(:account, last_webfingered_at: outdated_webfinger_at) }
+
+        it 'schedules an account update' do
+          worker.perform(account.id)
+
+          expect(service).to have_received(:call)
+        end
+      end
+
+      def recent_webfinger_at
+        (Account::BACKGROUND_REFRESH_INTERVAL - 3.days).ago
+      end
+
+      def outdated_webfinger_at
+        (Account::BACKGROUND_REFRESH_INTERVAL + 3.days).ago
+      end
+    end
+  end
+end