gecko-dev/testing/web-platform/tests/css/mediaqueries/viewport-script-dynamic.html
Emilio Cobos Álvarez 5ee9269405 Bug 1424878: Not having cached style data doesn't guarantee we don't need to update media query stuff. r=bz
In particular,  even when there are no frames, we may have used the rule
cascades / stylist data (for different stuff, like font-feature-values, thus the
regressing bug).

Using the old rule cascades / stylist data without knowing it has changed is
wrong, thus the bug.

Now that media query change stuff is async and has a well-defined processing
point, we should be able to just call it without too much worry.

Also note that at the point the extra hints are passed, if there's no root frame
/ elements are not styled / etc, we'll optimize away the change hint.

The test-case intermittently fails without this patch, but I didn't manage to
make a better one, unfortunately :(

MozReview-Commit-ID: LY2HRIlAKHX
2018-02-11 20:07:21 +01:00

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HTML

<!doctype html>
<meta charset="utf-8">
<title>CSS Test: Meta viewport after a script and stylesheets</title>
<link rel="author" href="mailto:emilio@crisal.io">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1424878">
<link rel="help" href="https://drafts.csswg.org/mediaqueries/#mf-dimensions">
<link rel="match" href="viewport-script-dynamic-ref.html">
<style>
p { color: green; }
/* Ensure that we initially match it, and stop matching it afterwards */
@media (min-width: 310px) {
p {
color: red;
}
}
</style>
<!-- The broken script below is the point of the test, see the bugzilla bug. -->
<script src="intentionally-broken-url.js"></script>
<meta name="viewport" content="width=300">
<p>Should be green</p>