Best practices for testing Stripe webhook event processing

The text discusses the integration of an application with Stripe's API for payment processing. It praises the polish of Stripe's API, documentation, and SDK ergonomics but highlights two issues during development/testing: testing webhook processing and webhooks from one test environment being sent to another. The author provides a detailed explanation on how to handle webhooks from Stripe, including verifying their authenticity and avoiding replay attacks. They also discuss the difficulty of integration testing due to delays in sending invoice webhook events by Stripe. To resolve this issue, they suggest disabling the authenticity check in test mode. The text further explores how other companies handle multiple environments for testing purposes and suggests improvements that could be made to Stripe's system.