Document how to write tests for workers

[vinaypuppal]

I found these two old articles

1. https://blog.cloudflare.com/unit-testing-workers-in-cloudflare-workers/
2. https://findwork.dev/blog/testing-cloudflare-workers/

And this issue https://github.com/cloudflare/wrangler/issues/1026

Now the wrangler dev is out of beta, it would be nice to have an official page in docs on how to test workers locally and with CI tools.

[kristianfreeman]

yes! we'd like to support this better in the platform. for now, check out the #testing-strategies channel in our discord server to talk w/ folks doing this. leaving this ticket open tho because we eventually want to add content in our docs for this! thanks for filing an issue 👍

[grahamlyons]

Yes, please. Another very promising article on testing Cloudflare Workers uses a package which is no longer maintained: https://blog.cloudflare.com/unit-testing-worker-functions/

[jkup]

Hey all,

Thanks for bringing this up. We're working on an internal solution for testing Workers locally! We'll update our docs as soon as we have something and I've got a list of those outdated resources (thanks for sharing those!) In the meantime, Miniflare is a really cool community project that a lot of people use for that!

cc @grahamlyons @vinaypuppal

[grahamlyons]

I started using Miniflare and it's changed my life. I recommend it highly.

[jkup]

So happy to hear that :)

[jkup]

@lauragift21 I've been leaving this one open because the DevProd team is hard at work on a test runner for Wrangler https://github.com/cloudflare/wrangler2/issues/1183

Whenever that work is completed, we should update the docs with instructions on how to use that!

[lauragift21]

Sure thanks! @jkup I'll an eye on this issue.

[haleycode]

Confirmed this issue is being tracked internally, so closing it out here for now.

[deadlypants1973]

https://github.com/cloudflare/cloudflare-docs/pull/6501