test: prepare plugin for fastify 4.x

[darkgl0w]

Hello.
This PR aims to :

• Replace preParsing hooks with onRequest hooks inside tests (Alias preParsing to onRequest hook. Deprecate preParsing fastify#3503)
• Rewrite all tests (replacing Node.js http.get calls with fastify.inject, async/await ... )
• Add Node.js 17 to the CI matrix
• Fix windows flacky tests (maybe ... I hope at least 🤞 😸)

Checklist

• run npm run test and npm run benchmark
• tests and/or benchmarks are included
• documentation is changed or added
• commit message and code follows the Developer's Certification of Origin
  and the Code of conduct

[darkgl0w]

Hmmmm GitHub CI Windows runners failure 🤔
Should not be related to the PR IMO: cf. this commit CI run

[mcollina]

CI is failing :(

[darkgl0w]

CI is failing :(

Can you manually trigger a CI re-run please ?
I suspect this to be a problem on GitHub CI Windows runner side, If it fails again I will try to see what is triggering this issue ^^

[darkgl0w]

It seems that there is a flacky test when running in the Windows environment.
cf. https://github.com/fastify/fastify-caching/runs/4376801490?check_suite_focus=true and https://github.com/fastify/fastify-caching/runs/4376801490?check_suite_focus=true 🤔

I need to go, but I will try to look at this later today or tomorrow.

[darkgl0w]

OK it seems good now (I hope 😸), I ended up rewriting the tests (I swapped http.get calls with fastify.inject and I have gone async/await syntax), let me know if I need to change or revert anything. 😛

I have triggered a few CI run cycles and it seems to be OK so 🤞.
For reference https://github.com/darkgl0w/fastify-caching/actions

[jsumners]

Looks good to me.

[Eomm]

@darkgl0w the merge into master has some issue 😞

test count(2) != plan(3)

https://github.com/fastify/fastify-caching/actions/runs/1541922678

Could you take a look?

[darkgl0w]

@Eomm > It seems that the root cause of the test flackyness is still there in Windows environments.
I will take a look tomorrow morning.

Edit: PR sent thanks to GitHub.dev vscode !_!