Good architecture is essential for a codebase to enjoy a long and happy life (the other crucial ingredient is running automated unit tests, but that’s a different blog post). Nowadays there are many sensible options, including our favorite for mobile apps, Clean arch, but no matter which one you choose, you’ll need to document and enforce it somehow.
The former is traditionally accomplished by some form of oral history passed from one developer to another (sometimes augmented by blurry photos of frantically scribbled whiteboard diagrams), while the latter is sporadically checked during code reviews (if there’s time—which there isn’t—and you remember all the rules yourself—which you don’t).
Or maybe you even have a set of gradually outdated wiki pages and fancy UML models created in some expensive enterprise tool. Or complicated but incomplete rules written for rather arcane static analysis frameworks. Or any other form of checks and docs, which are usually hard to change, detached from the actual code, and difficult and rather expensive to maintain.
But fret not! There is a new architectural sheriff in this JVM town of ours and he’s going to take care of all of this—say hello to your new best friend, ArchUnit!
What’s all the fuss about?...
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