1265276 - Move tests for non-animatable properties to generic keyframe test data file

Status: NEW

(Core :: DOM: Animation, defect)

Description

[Brian Birtles (:birtles)]

I'd actually like to do two things in this bug:

1. Take the tests in web-platform/tests/web-animations/animation-model/animation-types/not-animatable.html and merge the test data into the forthcoming web-platform/tests/web-animations/keyframe-utils.js so that we can basically test this behavior for all things that take keyframes.

2. Add separate tests for CSS animations and CSS transitions to check that any attempts to set 'display' etc. in @keyframes or transitions etc. are correctly ignored.

The reason for (2) is two-fold: (a) the bit of code that ignores non-animatable properties differs in CSS animations/transitions, and (b) we might later decide that it's ok to animate, e.g., 'display' using Element.animate() while still disallowing it from CSS and if that happens we should continue to test that CSS does the right thing.