Cypress videos as an aid in manual/visual testing

[quinn-dougherty]

Description:

Cypress is a virtual browser that produces videos.

We should be able to set up PRs to post video clips from the storybook (or playground) of certain snippets of squiggle code, to quickly ascertain correctness of graphs.

[berekuk]

@quinn-dougherty, do you still think this is necessary / that we will get around to doing this any time soon?

This sounds pretty advanced to me, and we don't even have basic tests for the components yet.

My order of preference for this topic is: basic behavior tests with react-testing-library first, then snapshot tests for some components where it makes sense, to catch regressions. Compared to those Cypress videos don't add much value (especially since we have storybook and Netlify builds on each PR).