While developing a new application, we should never forget about automated tests. These are especially important if we are thinking about microservices-based architecture. Testing microservices requires a different approach than the tests created for monolithic applications. As far as monoliths are concerned, the main focus is on unit testing and integration tests, together with the database layer. In the case of microservices, the most important thing is to provide coverage for each of the communications at the finest possible granularity. Although each microservice is independently developed and released, a change in one of them can affect all of the others that are interacting with that service. The communication between them is realized through messages. Usually, these are messages that are sent via REST or AMQP protocols.
Topics we will cover in this chapter include the following:
- Spring support for automated testing
- Differences between a component...