Add coverage for `settings/privacy` controller (#28000)

spec/controllers/settings/privacy_controller_spec.rb

@@ -0,0 +1,74 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Settings::PrivacyController do
+  render_views
+
+  let!(:user) { Fabricate(:user) }
+  let(:account) { user.account }
+
+  before do
+    sign_in user, scope: :user
+  end
+
+  describe 'GET #show' do
+    before do
+      get :show
+    end
+
+    it 'returns http success with private cache control headers', :aggregate_failures do
+      expect(response)
+        .to have_http_status(200)
+        .and have_attributes(
+          headers: include(
+            'Cache-Control' => 'private, no-store'
+          )
+        )
+    end
+  end
+
+  describe 'PUT #update' do
+    context 'when update succeeds' do
+      before do
+        allow(ActivityPub::UpdateDistributionWorker).to receive(:perform_async)
+      end
+
+      it 'updates the user profile' do
+        put :update, params: { account: { discoverable: '1', settings: { indexable: '1' } } }
+
+        expect(account.reload.discoverable)
+          .to be(true)
+
+        expect(response)
+          .to redirect_to(settings_privacy_path)
+
+        expect(ActivityPub::UpdateDistributionWorker)
+          .to have_received(:perform_async).with(account.id)
+      end
+    end
+
+    context 'when update fails' do
+      before do
+        allow(UpdateAccountService).to receive(:new).and_return(failing_update_service)
+        allow(ActivityPub::UpdateDistributionWorker).to receive(:perform_async)
+      end
+
+      it 'updates the user profile' do
+        put :update, params: { account: { discoverable: '1', settings: { indexable: '1' } } }
+
+        expect(response)
+          .to render_template(:show)
+
+        expect(ActivityPub::UpdateDistributionWorker)
+          .to_not have_received(:perform_async)
+      end
+
+      private
+
+      def failing_update_service
+        instance_double(UpdateAccountService, call: false)
+      end
+    end
+  end
+end