Summary

In this chapter, we learned how to test asynchronous code written using Reactor 3 or any Reactive Streams-based libraries. In turn, we covered the essential points of testing reactive Spring applications, based on the WebFlux module and the Spring Test module. Then, using WebTestClient, we learned a way to verify a single controller in isolation, or the whole application with mocked external interaction. Furthermore, we learned knowing how to test Reactor 3 helps us in testing the whole system in integration. Along with everyday business logic checking, we learned a few tips for working with mocked security, which is also a crucial part of modern web applications. Finally, this chapter ended with some tips and tricks for WebSocket testing. Here, we saw some of the limitations of the 5.0.x Spring Test module. Nevertheless, by adopting WebSocketClient...