Testing

[SampsonCrowley]

@justalever I loved your writeup attached to this repo, except it doesn't really provide any insight into your advice on testing this functionality either through Jest/karma/mocha (JS) etc... or in the system tests

[justalever]

Hey thanks! Testing and such I left out to reduce the overhead of the guide. It's certainly a worthy additional step should you require it. You'd probably need both JS tests and tests on the server-side.

[SampsonCrowley]

I'm in the process of trying to write up both system tests with rails and javascript testing through jest. I was hoping you might already have some basics to build on like the rest of the article, but since not, I'll be sure to submit what I come up with to the repo!

Even if it adding it to the article would be too heavy (which I agree with), having some examples in the source repo I think should be enough to get most people started in their own use cases

Side Note: I'd personally recommend renaming DirectUploadController (in dropzone_controller.js) to DirectUploadManager or even just UploadManager since it's not a controller in the stimulus sense, and that might be confusing to some less knowledgeable readers; but certainly not a big enough deal to be a real issue!