Bug 198220 – REGRESSION (r245742) [iOS Sim] Layout Test compositing/rtl/rtl-overflow-scrolling.html is failing

• Component: Tools / Tests
• Status: RESOLVED FIXED

[Shawn Roberts]

The following layout test is failing on iOS Simulator Release and Debug WK2

compositing/rtl/rtl-overflow-scrolling.html

Probable cause:

After changes in https://trac.webkit.org/changeset/245742/webkit the above test started failing on iOS Simulator

Verified locally, fails with r245742, passes in 245741

Unsure if it just a rebaseline?

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=compositing%2Frtl%2Frtl-overflow-scrolling.html

Diff:

--- /Volumes/Data/slave/ios-simulator-12-release-tests-wk2/build/layout-test-results/compositing/rtl/rtl-overflow-scrolling-expected.txt
+++ /Volumes/Data/slave/ios-simulator-12-release-tests-wk2/build/layout-test-results/compositing/rtl/rtl-overflow-scrolling-actual.txt
@@ -3,6 +3,6 @@
 layer at (0,0) size 800x600
   RenderBlock {HTML} at (0,0) size 800x600
     RenderBody {BODY} at (8,8) size 784x584
-layer at (8,8) size 300x300 scrollX -15 scrollWidth 1000 scrollHeight 1000
+layer at (8,8) size 300x300 scrollWidth 1000 scrollHeight 1000
   RenderBlock {DIV} at (0,0) size 300x300
     RenderBlock {DIV} at (-700,0) size 1000x1000 [bgcolor=#008000]

[Radar WebKit Bug Importer]

<rdar://problem/51114177>

[Ryan Haddad]

It looks like ios-sim EWS saw this on https://bugs.webkit.org/show_bug.cgi?id=198208, but it didn't get to confirm the result before the change was landed.

[Simon Fraser (smfr)]

Ah, this is a progression. scrollX should never be negative.

[Simon Fraser (smfr)]

https://trac.webkit.org/r245751