Infection VS composer-normalize

Obviously, we can not generate mutants manually. For that purpose, there are mutation testing utilities. For PHP, we have Infection.

Infection: PHP Mutation Testing library. Plugins: roave/infection-static-analysis-plugin: Static analysis on top of mutation testing - prevents escaped mutants from being invalid according to static analysis bitexpert/captainhook-infection: Captain Hook Plugin to run InfectionPHP only against the changed files of a commit

Infection: PHP Mutation Testing library. Plugins: roave/infection-static-analysis-plugin: Static analysis on top of mutation testing - prevents escaped mutants from being invalid according to static analysis bitexpert/captainhook-infection: Captain Hook Plugin to run InfectionPHP only against the changed files of a commit

If you want to enforce testing automatically probably the best option is to rely on mutation testing, using Infection. That doesn't just check that the tests cover the code, it checks that if the code was different to what it is then the tests would (usually) fail.

IMO code coverage is a very flawed metric on its own. A high percentage doesn't guarantee that the tests actually test the right things, and it would be much more efficient if mutation testing was used (e.g. Infection). It still uses the generated code coverage reports, but only as a base for its own metrics.

For your last edit - you can also add infection which will infect your code with other values, like if you expect a positive number, it will try and inject a negative number - and see what happens - does your code break everything or something. Also it will try to inject false where you might expect a true and many many other things, and yes you will get some weird results from infection, but its a good thing to look at, and atleast check the logs and see why the infection failed at a test.

The only one that I've used is infection for PHP.

That's practically a light form of mutant testing. Have you checked Infection?

Composer-Normalize: Your Organization Sidekick! Let's talk about keeping things neat and tidy! Enter Composer-Normalize. This nifty tool ensures your composer.json file stays impeccably organized and sorted. No more chaotic dependency lists - it's all about that clean, structured vibe! 🌐📑 More info here: https://github.com/ergebnis/composer-normalize

I guess composer normalize is doing those checks since it is validating the composer.json against it's official schema. More at https://github.com/ergebnis/composer-normalize

Use composer-normalize as a formatter

composer-normalize: Provides a composer plugin for normalizing composer.json.

The README itself shows that it’s being used to keep track of Chinese Starbucks stores, download JSON schema updates periodically and even by the Node project itself to keep the license file up to date.