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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - webkitDisplayingFullscreen may return false in webkitfullscreenchange event handler"
href="https://bugs.webkit.org/show_bug.cgi?id=165755">165755</a>
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<th>Summary</th>
<td>webkitDisplayingFullscreen may return false in webkitfullscreenchange event handler
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
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<th>Version</th>
<td>WebKit Nightly Build
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<th>Hardware</th>
<td>Unspecified
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<th>OS</th>
<td>Unspecified
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>Normal
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>Media Elements
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>graouts@apple.com
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<p>
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<pre>The test at media/modern-media-controls/fullscreen-support/fullscreen-support-click.html is flaky, try running it as follows:
Tools/Scripts/run-webkit-tests --release --time-out-ms=5000 --no-sample-on-timeout --exit-after-n-failures=1 --iterations=200 media/modern-media-controls/fullscreen-support/fullscreen-support-click.html
When it fails, you can see that the cause is that media.webkitDisplayingFullscreen returns false whereas it should return true. By deferring the assertion to the next run loop, the test never fails:
media.addEventListener("webkitfullscreenchange", () => {
// We use a timeout here as sometimes media.webkitDisplayingFullscreen
// wouldn't return true just yet after entering fullscreen.
setTimeout(() => {
shouldBeTrue("media.webkitDisplayingFullscreen");
container.remove();
media.remove();
finishJSTest();
});
});
While I can work around this to fix this test, we should find what the root cause for this is.</pre>
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