Bug 207165

Summary: [ Mac wk2 ] tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-padding.html is flaky failing.
Product: WebKit Reporter: Jason Lawrence <Lawrence.j>
Component: ScrollingAssignee: Nobody <webkit-unassigned>
Status: RESOLVED CONFIGURATION CHANGED    
Severity: Normal CC: tsavell, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
Update Test Expectations none

Description Jason Lawrence 2020-02-03 16:45:25 PST 
tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-padding.html

Description:
This test is flaky failing on Mac.

History:
https://results.webkit.org/?suite=layout-tests&test=tiled-drawing%2Fscrolling%2Fscroll-snap%2Fscroll-snap-mandatory-padding.html&platform=mac&limit=50000

Diff:
--- /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-padding-expected.txt
+++ /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-padding-actual.txt
@@ -1,13 +1,14 @@
 Tests that the scroll-snap feature works properly in overflow regions.
  Testing scroll-snap glide for horizontalTarget:
-PASS div scrolled to next window.
+FAIL div did not honor snap points. Expected 320, but got 0
 Testing scroll-snap snap for horizontalTarget:
-PASS div honored snap points.
+FAIL div did not snap back to proper location for horizontalTarget. Expected 0, but got 20
 Testing scroll-snap glide for verticalTarget:
 PASS div scrolled to next window.
 Testing scroll-snap snap for verticalTarget:
 PASS div honored snap points.
 PASS successfullyParsed is true
+Some tests failed.
 
 TEST COMPLETE
Comment 1 Radar WebKit Bug Importer 2020-02-03 16:45:48 PST 
<rdar://problem/59132122>
Comment 2 Jason Lawrence 2020-02-03 16:48:46 PST 
Created attachment 389601 [details]
Update Test Expectations
Comment 3 Truitt Savell 2020-02-03 16:50:15 PST 
Comment on attachment 389601 [details]
Update Test Expectations

Clearing flags on attachment: 389601

Committed r255619: <https://trac.webkit.org/changeset/255619>
Comment 4 Jason Lawrence 2020-02-11 10:48:23 PST 
I was able to reproduce this issue on r256238 by using the command below.
run-webkit-tests tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-padding.html --iterations 5000 -f --force --exit-after-n-failures 5

[573/5000] tiled-drawing/scrolling/scroll-snap/scroll-snap-mandatory-padding.html failed unexpectedly (text diff)
Retrying 1 unexpected failure ...
4999 tests ran as expected, 1 didn't