chore: Rewrite tests to AVA

Is your feature request related to a problem? Please describe.

The current tests are good, however, I don’t really like the fact, that Mocha depends on global variables (it, describe). Furthermore, Mocha runs tests serially, which is much slower, especially when there are a lot of tests involved.

AVA runs each test in a separate process and therefore takes advantage of multi-core CPUs.

As we maintain over 200 tests, this will likely require a significant amount of work, but I think it’s something that we should consider, as it will make maintaining the project easier.

It’s also worth mentioning, that we already use AVA in timeout-signal, fetch-blob and fetch-charset-detection.

Describe the solution you’d like

• Migrate from Mocha & Chai to AVA.
• During the process, try and split the huge, 2000 LOC+ test/main.js file into smaller pieces.

Describe alternatives you’ve considered

N/A

Additional context

• http://zpalexander.com/migrating-from-mocha-to-ava/

[xxczaki]

@curtisjohnson1 I already started it in #833. There is a TODO list, pick something and let me know so that I can update it 😉

[curtnux]

@xxczaki - Great, assign me to main. I’ll make a start on it