[css-houdini-drafts] Print behaviour & test requirements (#978)

gsnedders has just created a new issue for https://github.com/w3c/css-houdini-drafts:

== Print behaviour & test requirements ==
Does anywhere normatively say what should happen when you print the document? I guess it's technically implementation defined, and just assumed that the page is laid out for the new medium (and print medium styles are applied)?

Given historically, JS is not run when redoing style & layout for print, what do we expect the behaviour with the Layout API to be? Do we expect the registered JS to be called? What happens if it doesn't halt (do you fallback to breaking the existing screen rendering, or do we just give a script hang prompt, etc.)?

How do we expect to test such behaviour? Are we just envisioning [print reftests](https://github.com/web-platform-tests/wpt/issues/7760) for this, or would there be in any way the worklets would be tested with testharness.js?

Please view or discuss this issue at https://github.com/w3c/css-houdini-drafts/issues/978 using your GitHub account

Received on Wednesday, 29 January 2020 18:05:23 UTC