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Happenstance testing is a test smell where you are asserting something more specifically than relevant to what you’re testing. For example, trying to assert the order of items in a set can lead to disappointment when your runtime changes its algorithm for arranging sets. Similarly, asserting the exact test of an error message, unless it’s the construction of the message ...

Many people talk about “going back to normal.” We aren’t going to return to normal. That old normal is gone, at least for a year, if not longer. (I suspect we will cycle between remote work and office work for the foreseeable future.) What we can do is discover a new normal. Discovery requires different skills than delivery. Discovery requires ...

Quarkus ships with its own templating engine, Qute, which already includes an interesting set of features. In the following video, I’m showing the basic usage of action-based MVC with JAX-RS that forwards our requests to HTML templates. To try out Qute yourself, have a look at the following resources: Example projectQute Templating Engine GuideQute Reference Guide Published on Java Code ...

Most of us are very familiar with the famous Mark Zuckerberg declaration to “move fast and break things.” That was a very bold statement back in 2014, and, as Zuckerberg quickly realized, probably too bold. He later retracted it, stating his new desire to move fast, yet stay stable. To better address code quality (without compromising speed) many organizations are ...

It’s a common issue when trying to start up your application. Something goes wrong, there’s a load of trace on the console, and you need to try to work out what could be the problem. There’s are various cognitive biases that affects our ability to resolve these problems. We often expect the thing we last did to be the cause ...

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Besides the native mode, Quarkus also runs well in JVM mode which comes with its own advantages. You can use an alternative JVM, such as OpenJ9 which gives you better resource consumption. In the following video I’ll show how easy it is to swap the JVM. In the video, I’m using the Docker image adoptopenjdk/openjdk14-openj9 in one of the latest ...

If you have access to the JAX-RS API and an implementation in your projects (many do), then you can use JAX-RS’ UriBuilder to conveniently create URIs via builder pattern using resolvable placeholder. Have a look at the following example: 1 2 3 4 5 6 7 String host = System.getProperty("host", "localhost"); String port = System.getProperty("port", "8080");   URI uri = ...

Quarkus supports CDI (Contexts and Dependency Injection) 2.0, but not all of it, only the most common features. However, Quarkus does include some non-standard features that can come in quite handy to developers which I want to show in the following video. Whether or not you’re familiar with CDI, if you use Quarkus you should have a look at the ...