In Gaia, the system and many of the apps use transitions/animations with
a non-trivial duration, particularly for card metaphor stuff where logic
may be blocked on the completion of the animation. (Values seem to vary
between 0.3s and 0.5s... no one tell UX!)
Our Gaia tests currently take an absurdly long amount of time for what
is being tested. There are varying reasons for this (gratuitous
teardown of the b2g-desktop process, timeouts that time out but don't
fail, etc.). I believe one thing we could do to speed things up would
be to make all transitions super short. We still want transitionend to
fire for logic reasons, but otherwise the unit test infrastructure
probably does not really care to actually watch the transition happen.
Is it possible / advisable to have Gecko support some preference or
other magical mechanism to cause transitions and non-infinite animations
to effectively complete in some extremely small time interval / on the
next turn of the event loop, at least for durations originally less than
1second/other short time? I briefly looked for such an existing
mechanism, but was unable to find one.
The alternative would be to use a build-time mechanism in Gaia to
transform all CSS to effect this change in that fashion. Gaia already
has build steps like this so introducing it would not be particularly
difficult, but it's always nice if what the tests run is minimally
different from what the devices run.
(Additionally, an in-Gecko mechanism could produce slightly more correct
results since it could realistically emulate the ordering of when the
transitionend events would fire before disregarding those numbers and
firing them all in succession. Although an automated mechanism I
suppose could just map observed values to sequentially ordered small
timeouts.)
Andrew
_______________________________________________
dev-platform mailing list
dev-platform@lists.mozilla.org
https://lists.mozilla.org/listinfo/dev-platform
