Bug 168924 – [ios-simulator WK2] LayoutTest scrollingcoordinator/ios/non-stable-viewport-scroll.html is a flaky failure

• Component: New Bugs
• Status: RESOLVED FIXED

[Ryan Haddad]

LayoutTest scrollingcoordinator/ios/non-stable-viewport-scroll.html is a flaky failure

https://build.webkit.org/results/Apple%20iOS%2010%20Simulator%20Debug%20WK2%20(Tests)/r213044%20(3810)/results.html

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#tests=scrollingcoordinator%2Fios%2Fnon-stable-viewport-scroll.html

--- /Volumes/Data/slave/ios-simulator-10-debug-tests-wk2/build/layout-test-results/scrollingcoordinator/ios/non-stable-viewport-scroll-expected.txt
+++ /Volumes/Data/slave/ios-simulator-10-debug-tests-wk2/build/layout-test-results/scrollingcoordinator/ios/non-stable-viewport-scroll-actual.txt
@@ -16,14 +16,13 @@
       (contentsScale 6.00)
       (children 1
         (GraphicsLayer
-          (position 10.00 0.00)
-          (approximate position 10.00 634.67)
+          (position 10.00 635.00)
           (bounds 100.00 548.00)
           (usingTiledLayer 1)
           (contentsOpaque 1)
           (drawsContent 1)
-          (visible rect 0.00, 365.33 96.67 x 182.67)
-          (coverage rect -10.00, 322.66 192.00 x 268.00)
+          (visible rect 0.00, 365.00 96.67 x 182.67)
+          (coverage rect -10.00, 322.33 192.00 x 268.00)
           (intersects coverage rect 1)
           (contentsScale 6.00)
         )

[Ryan Haddad]

The earliest failure on the flakiness dashboard is 2/17/2017 4:23:29 PM @ r212591, though the failure is flaky and that change is unrelated.

[Alexey Proskuryakov]

I see this produce spurious EWS failures.

[Ryan Haddad]

Marked test as flaky in http://trac.webkit.org/projects/webkit/changeset/213476

[Simon Fraser (smfr)]

Created attachment 364168 [details]
Patch

[Simon Fraser (smfr)]

https://trac.webkit.org/changeset/242684/webkit

[Radar WebKit Bug Importer]

<rdar://problem/48746989>