Articles tagged junit
Better Testing with Spring Security Test
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Integration testing in modern Spring Boot microservices has become easier since the release of Spring Framework 5 and Spring Security 5. Spring Framework’s WebTestClient...
How to GraphQL in Java
REST APIs are hard to design so they serve multiple clients well. As each client has their own needs in terms of data searching, filtering and which fields they want, a traditional REST API will provide a single version of an entity and the client has the responsibility of navigating through multiple endpoints and correlate the data on their side to build the data they want. GraphQL was developed by Facebook to overcome the shortcomings...
Upgrading Spring Security OAuth and JUnit Tests through the 👀 of a Java Hipster
Using unit and integration tests to verify your code quality is an excellent way to show you care about your code. I recently did a bunch of work in the popular JHipster open source project to upgrade it to use the latest release of Spring Security. Spring Security 5.1+ adds OAuth 2.0 and OIDC as first-class citizens that you can configure with its elegant DSL (a.k.a. cool method chaining, a.k.a. the builder pattern). I’ve been...
Test Your Spring Boot Applications with JUnit 5
In this post, you’ll walk through how to build a simple Spring Boot application and test it with Junit 5. An application without testing is the proverbial Pandora’s Box. What good is your application if you don’t know that it will work under any condition? Adding a suite of tests builds confidence that your application can handle anything thrown at it. When building your tests, it is important to use a modern and comprehensive suite...
The Hitchhiker's Guide to Testing Spring Boot APIs and Angular Components with WireMock, Jest, Protractor, and Travis CI
Writing apps with Spring Boot and Ionic (which is built on Angular) can be fun because both frameworks offer a good developer experience (DX). You change a file, save it, and the app automatically reloads with your changes. This feature is often called hot-reload and it’s a blissful way to develop. It’s so nice, it can cause you to forget about automating your tests. I’ll admit, writing tests is difficult to do. Writing the test...