Book Image

Learning Spring Boot 2.0 - Second Edition

By : Greg L. Turnquist, Greg L. Turnquist
Book Image

Learning Spring Boot 2.0 - Second Edition

By: Greg L. Turnquist, Greg L. Turnquist

Overview of this book

Spring Boot provides a variety of features that address today's business needs along with today's scalable requirements. In this book, you will learn how to leverage powerful databases and Spring Boot's state-of-the-art WebFlux framework. This practical guide will help you get up and running with all the latest features of Spring Boot, especially the new Reactor-based toolkit. The book starts off by helping you build a simple app, then shows you how to bundle and deploy it to the cloud. From here, we take you through reactive programming, showing you how to interact with controllers and templates and handle data access. Once you're done, you can start writing unit tests, slice tests, embedded container tests, and even autoconfiguration tests. We go into detail about developer tools, AMQP messaging, WebSockets, security, and deployment. You will learn how to secure your application using both routes and method-based rules. By the end of the book, you'll have built a social media platform from which to apply the lessons you have learned to any problem. If you want a good understanding of building scalable applications using the core functionality of Spring Boot, this is the book for you.
Table of Contents (11 chapters)

Fully embedded Spring Boot app tests

We did some nice testing of the web controller and verified that it behaves properly. But that was just another slice. At some point, it's good to test the whole thing, end-to-end. And with today's modern suite of test tools, it's totally doable.

Spring Boot doesn't always support every tool. For example, Selenium WebDriver, a popular browser automation toolkit, is not yet supported outside of servlets.

No problem! What we really need is for Spring Boot to launch our application, preferably on an unoccupied port, and get out of the way while we do some testing. So let's do just that.

We can start by crafting a new test case like this:

      webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT) 
      public class EndToEndTests { 

This preceding test class...