我应该在MQ/服务体系结构中测试整个业务流吗?

目前,我进行了集成测试,测试我们的HTTP端点,如下所示:

1. Create fake data in a dockerized mysql container. So that the DB is in the correct state
2. Perform testable action such as: User needs to approve a contract
3. Expect that the `contract.status` is now `approved`
4. Query a local SMTP server (Mailhog) to see if the email is there
5. Expect that email subject/body contains what I'm expecting