Spring ẀebClient was added as part of the reactive web stack WebFlux in Spring Framework 5.0. WebClient allows performing HTTP requests in reactive applications, providing a functional and fluent API based on Reactor, and enabling a declarative composition of asynchronous non-blocking requests without the need to deal with concurrency. One…
Read moreWe know unit testing is a vital part of the software development process. We also know us developers love to debate techniques, frameworks, strategies, and how different layers and components need testing. Unit tests are the most valuable when they are stable, fast, and reproducible.
Read moreNote: 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 as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation.
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David Neal 6 min read
Testing is an essential discipline for any non-trivial software project. With a dynamic language like JavaScript, testing is an absolute necessity. This post is on the best tools currently available for Node.js, but here's a quick look at some of the many benefits of testing.
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Brian Demers 4 min read
My favorite way to test Java code is with Groovy. Specifically, writing tests in Groovy with Hamcrest. In this post, I'll walk through how to test a simple Spring Boot application with these tools.
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Matt Raible 7 min read
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.
Read moreIn 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…
Read moreReact Native is one of the most popular ways of creating mobile apps. Building on the success of React, it ties together native components for both Android and iOS using a shared JavaScript code-base. However, JavaScript has come under fire recently for not being type safe which can lead to…
Read more Matt Raible 17 min read
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…
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Victor 2 min read
This is the third of a four part series on Android Unit Testing. In the last two articles I discussed the general principles of having good tests and the way to run Android tests on JVM making them fast and how to make your code less coupled. This article will…
Read moreThis is the third of a four part series on Android Unit Testing. In the last two articles I discussed the general principles of having good tests and the way to run Android tests on JVM making them fast. This part will show how to make your Android code less…
Read moreThis is the second of a four part series on Android Unit Testing. In these posts, we'll walk through the key steps engineers should take to make Android test fast by running them on JVM (versus running them on emulator).
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Jimena Garbarino 
Ruslan Zaharov 
Joy Foster 
Karl Penzhorn