rspec_callbacks_testing

🧪 Testing Callbacks Precisely with RSpec

Avoid coupling tests to implementation details. Use RSpec spies and stub only external dependencies in callbacks. Test that callbacks fire under correct conditions rather than asserting internal state changes directly.

RSpec.describe Payment, type: :model do
  describe 'after_commit :notify_gateway' do
    it 'enqueues a notification job after successful save' do
      payment = build(:payment)
      expect {
        payment.save
      }.to have_enqueued_job(GatewayNotificationJob).with(payment.id)
    end
  end
end

By focusing on side effects (e.g., enqueued jobs), you keep your tests resilient to refactoring and internal changes.