How often have you heard “it’s gonna be hard or impossible to cover this part of our backend application”? I’ve heard a lot. Because our modern application always involve databases, message queues, 3rd party services. What if I tell you, that I can cover even logs with tests, values of custom application metrics, apps that involve Google Cloud Storage, Google Data Storage, Kafka, Redis, Lambdas, DynamoDB, Aerospike, S3. I work in highload project without manual QA’s at all. And I’m confident in my everyday releases, so should be you.

This presentation was given in English JS Fwdays Europe 2022 and Ukrainian WDDay 2022.