Nobody wants to discover a production service laying down and not working, or even failing to behave as expected, with errors and incorrect data processing. On one occasion, we — Bumble, the parent company operating Badoo and Bumble apps — decided to greatly reduce such inappropriate behaviour through the use of integration tests.

In this article, I share not only our experience in developing the framework for integration tests for distributed systems but also the general principles and nuances involved in making one. I will highlight tasks to be solved, pros and cons and also describe solutions. I hope you…