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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
| commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
| tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /gfx/layers/apz/test/mochitest/helper_hittest_spam.html | |
| parent | Initial commit. (diff) | |
| download | firefox-upstream.tar.xz firefox-upstream.zip | |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/layers/apz/test/mochitest/helper_hittest_spam.html')
| -rw-r--r-- | gfx/layers/apz/test/mochitest/helper_hittest_spam.html | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/gfx/layers/apz/test/mochitest/helper_hittest_spam.html b/gfx/layers/apz/test/mochitest/helper_hittest_spam.html new file mode 100644 index 0000000000..cace5491a5 --- /dev/null +++ b/gfx/layers/apz/test/mochitest/helper_hittest_spam.html @@ -0,0 +1,100 @@ +<!DOCTYPE HTML> +<html> +<head> + <title>Test doing lots of hit-testing on a rapidly changing page</title> + <script type="application/javascript" src="apz_test_utils.js"></script> + <script type="application/javascript" src="apz_test_native_event_utils.js"></script> + <script src="/tests/SimpleTest/paint_listener.js"></script> + <meta name="viewport" content="width=device-width"/> +</head> +<style> +#spamdiv { + overflow: scroll; + width: 400px; + height: 400px; +} +#spamdiv div { + width: 1000px; + height: 1000px; +} +</style> +<body> +<script type="application/javascript"> + +var SPAM_LIMIT = 200; // bigger numbers make the test run longer + +// This function adds and removes a scrollable div very rapidly (via +// setTimeout(0) self-scheduling). This causes very frequent layer +// transactions with a new APZ hit-testing tree from the main thread to APZ. +// The div is created afresh every time so that the scroll identifier in +// Gecko is continually increasing, and hit results from a stale tree will +// not be valid on the new tree. +var spamCount = 0; +var spamPoint = null; +function divSpammer() { + spamCount++; + if (spamCount >= SPAM_LIMIT) { + return; + } + setTimeout(divSpammer, 0); + + // Remove the div if it exists... + var spamdiv = document.getElementById('spamdiv'); + if (spamdiv) { + spamdiv.remove(); + return; + } + // ... and add it if it doesn't exist. + spamdiv = document.createElement('div'); + spamdiv.id = 'spamdiv'; + spamdiv.appendChild(document.createElement('div')); + document.body.appendChild(spamdiv); + if (spamPoint == null) { + spamPoint = centerOf(spamdiv); + } +} + +// This function does continuous hit-testing by scheduling itself over and +// over with setTimeout(0). It hit-tests the same spot and expects to hit +// either the root scrollframe (if the spamdiv is not present in that +// instant) or the spamdiv (if it is present). If the spamdiv is hit, it +// expects the scrollid to be non-decreasing. +var rootScrollId = null; +var lastScrollId = -1; +function hitTestSpammer() { + if (spamCount >= SPAM_LIMIT) { + subtestDone(); + return; + } + setTimeout(hitTestSpammer, 0); + + if (spamPoint == null) { + // The very first invocation of this function will have spamPoint as null, + // and we use that to pick up the rootScrollId. + ok(rootScrollId == null, "This codepath shouldn't get hit twice"); + rootScrollId = hitTest(centerOf(document.body)).scrollId; + ok(true, "Root scroll id detected as " + rootScrollId); + return; + } + + var scrollId = hitTest(spamPoint).scrollId; + if (scrollId == rootScrollId) { + ok(true, "Hit test hit the root scroller, spamdiv is not in compositor"); + } else { + is(scrollId >= lastScrollId, true, "spamdiv's scroll id is now " + scrollId); + lastScrollId = scrollId; + } +} + +function startTest() { + // Make sure to run hitTestSpammer first so the first iteration is while + // spamPoint is still null. + setTimeout(hitTestSpammer, 0); + setTimeout(divSpammer, 0); +} + +waitUntilApzStable().then(startTest); + +</script> +</body> +</html> |