Bug 203225 – [ Mac ] Layout Test legacy-animation-engine/compositing/backing/transform-transition-from-outside-view.html is flaky

• Status: RESOLVED
• Resolution: CONFIGURATION CHANGED
• Component: Tools / Tests

[Truitt Savell]

The following layout test is flaky on Mac

legacy-animation-engine/compositing/backing/transform-transition-from-outside-view.html

Probable cause:

This test is highly flakey on Mac. It has expectations set for wk1 already but has been failing on wk2 as well. Test was introduced in https://trac.webkit.org/changeset/230471/webkit . I am able to reproduce it easily with running it In iterations. I have been unable so far to find a revision that this does not fail on.

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=legacy-animation-engine%2Fcompositing%2Fbacking%2Ftransform-transition-from-outside-view.html

Diff:
--- /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/legacy-animation-engine/compositing/backing/transform-transition-from-outside-view-expected.txt
+++ /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/legacy-animation-engine/compositing/backing/transform-transition-from-outside-view-actual.txt
@@ -14,7 +14,7 @@
           (bounds 148.00 128.00)
           (drawsContent 1)
           (backingStoreAttached 1)
-          (transform [1.00 0.00 0.00 0.00] [0.00 1.00 0.00 0.00] [0.00 0.00 1.00 0.00] [-400.00 0.00 0.00 1.00])
+          (transform [1.00 0.00 0.00 0.00] [0.00 1.00 0.00 0.00] [0.00 0.00 1.00 0.00] [-399.99 0.00 0.00 1.00])
           (children 1
             (GraphicsLayer
               (offsetFromRenderer width=-14 height=-14)

[Radar WebKit Bug Importer]

<rdar://problem/56482469>

[Truitt Savell]

marked test as failing while investigating https://trac.webkit.org/changeset/251398/webkit

[Alexey Proskuryakov]

Is this the same as bug 184611?

[Truitt Savell]

The diff is very different between these now o I don't think I would consider them the same.

[Antoine Quint]

I think Alexey is right, the flakiness reported was before the fix for bug 184611 landed.

[Alexey Proskuryakov]

There were no failures since the fix for bug 184611 landed, so this is either a dupe or something that got fixed even earlier. Marking R/CC because there is no need to investigate which.

[Truitt Savell]

Removed expectation for this test in https://trac.webkit.org/changeset/251541/webkit