Unit test framework for Blazor

[danroth27]

• Unit test helper for instantiating components and trying out events, etc.
• End-to-end

[RehanSaeed]

Please also consider snapshot testing, similar to Jest. I've been using it with Vue.js and I've found it to be a great way to test UI without being too fragile and needing constant fixing.

[veikkoeeva]

Probably under consideration, but it appears the end-to-end tests could work with Puppeteer.Sharp (ping @kblok, the Selenium libraries are also an option) using something like Razor Live Reload with the usual ways of starting a web server in tests. Then have examples how to collect performance numbers, test some CSS driven things, web components and Service Workers. Could be interesting to load tests dynamically so one could test mobile browsers too (especially performance).

Cypress and TestCafe could be some examples, albeit I'm not sure how much overlap there are with assertion libraries, like XUnit.

<Edit: One consideration is also isomorphic situations, one being something that can be run or mimicks environments like Cloudflare Workers, e.g. https://github.com/anywhichway/dexterous or https://github.com/envato/cloudflare-worker-test-harness .