Open
Bug 1368132
Opened 7 years ago
Updated 2 years ago
Reflow tests should account for flushes that occur within timers, idle callbacks, and thread dispatches
Categories
(Testing :: Mochitest, enhancement)
Testing
Mochitest
Tracking
(Not tracked)
NEW
People
(Reporter: mconley, Unassigned)
References
Details
In bug 1354194, I added reflow tests for some key interactions. Those tests work, roughly, by dirtying the DOM before any JavaScript event is handled, in the hopes that we can deterministically trigger reflows anytime that a reflow _might_ be triggered. This works okay, but has a few blind spots. For one thing, it's possible for JS to run inside a timer, or an idleCallback, or be dispatched as a runnable to the main thread. In those cases, there's no great way for me to hook in and dirty the DOM before those functions run. We should find a way of doing that so we can flush out reflows in these types of callbacks.
Comment 1•7 years ago
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(In reply to Mike Conley (:mconley) from comment #0) > This works okay, but has a few blind spots. For one thing, it's possible for > JS to run inside a timer, or an idleCallback, or be dispatched as a runnable > to the main thread. In those cases, there's no great way for me to hook in > and dirty the DOM before those functions run. How bad would it be to do: (function alwaysDirty() { dirtyDOM(); Services.tm.dispatchToMainThread(alwaysDirty); })(); ?
Updated•2 years ago
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Severity: normal → S3
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Description
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