What accessibility issues should we automatically test for?

[brainwane]

There are a11y issues that are hard to catch using the current generation of static analyzers, and then there are ones we could probably catch via tests in CI. Some ideas @woodruffw had:

1. minimum font size
2. minimum color contrast ratios
3. some elements should probably always be ARIA-hidden
4. button elements -- probably always have a type

@JazzBrotha we'd love your input here.

[miketheman]

One resource: https://playwright.dev/docs/accessibility-testing