Intermittent layout/reftests/pagination/table-nested-1308876-1.xhtml == layout/reftests/pagination/table-nested-1308876-1-ref.html | single tracking bug
Categories
(Core :: Layout, defect)
Tracking
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People
(Reporter: imoraru, Unassigned)
Details
(Keywords: intermittent-failure, intermittent-testcase)
Failure line does not appear in Treeherder.
''' INFO '''
Images are identical.
''' INFO '''
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Reporter | |
Updated•2 years ago
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Comment 1•2 years ago
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The log shows
INFO | REFTEST fuzzy test (23, 1) <= (0, 0) <= (23, 1)
[task 2024-02-02T18:50:15.614Z] 18:50:15 INFO - REFTEST TEST-UNEXPECTED-PASS
The test has a strictly-must-be-fuzzy macOS annotation, but it seems the fuzzy-failure didn't happen in this case.
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Comment 2•2 years ago
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Failure line does not appear in Treeherder.
That's because this log has an extremely large number of reftest fuzzy-failures. This particular failure just happens to be the first one reported in the log.
Here's the reftest-analyzer view:
http://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://firefoxci.taskcluster-artifacts.net/X9u7fC_5QfWNC5KvDSd51g/0/public/logs/live_backing.log
There are other test failures in there that look more interesting/real than this spurious pass. In particular, there are some SVG-as-image test failures where the testcase's image is rendered at a different size than the reference case, e.g.:
layout/reftests/svg/as-image/context-stroke-08.html and img-foreignObject-iframe-1a.html and layout/reftests/svg/as-image/img-foreignObject-embed-1.html
and there are a lot of test failures in there where the reference case looks like it's shifted 1px (or a fraction of a pixel) with respect to the testcase, particularly in layout/reftests/pixel-rounding/.
I wonder if we're somehow being rendered at a higher-than-expected display resolution, which is responsible both for the unexpected-pass in comment 0 - comment 1 and also responsible for these unexpected failures from slight shifts and size-mismatches?
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Comment 3•2 years ago
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I filed bug 1878425 as an umbrella bug for this issue (since there's at least one other bug/failure that looks to be the same issue).
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Comment 5•2 years ago
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I guess we might as well dupe these to the umbrella bug, as emilio did in bug 1878707.
Description
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