Bug 208467

Summary:	[ iOS wk2 Debug and Mac Debug ] imported/w3c/IndexedDB-private-browsing/idbobjectstore_createIndex6-event_order.html is flaky failing.
Product:	WebKit	Reporter:	Jason Lawrence <Lawrence.j>
Component:	New Bugs	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	iPhone / iPad
OS:	iOS 13

Description Jason Lawrence 2020-03-02 13:17:32 PST

imported/w3c/IndexedDB-private-browsing/idbobjectstore_createIndex6-event_order.html

Description:
This test is flaky failing on iOS wk2 and Mac. The diff is the same on iOS and Mac. The flaky failures appear to be throughout the visible history.

History:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2FIndexedDB-private-browsing%2Fidbobjectstore_createIndex6-event_order.html&platform=ios&platform=mac&limit=50000&flavor=wk1&flavor=wk2

Mac diff:
--- /Volumes/Data/slave/mojave-debug-tests-wk1/build/layout-test-results/imported/w3c/IndexedDB-private-browsing/idbobjectstore_createIndex6-event_order-expected.txt
+++ /Volumes/Data/slave/mojave-debug-tests-wk1/build/layout-test-results/imported/w3c/IndexedDB-private-browsing/idbobjectstore_createIndex6-event_order-actual.txt
@@ -1,3 +1,3 @@
 
-PASS IDBObjectStore.createIndex() - event order when unique constraint is triggered 
+FAIL IDBObjectStore.createIndex() - event order when unique constraint is triggered assert_array_equals: events lengths differ, expected 8 got 7



iOS diff:
--- /Volumes/Data/slave/ios-simulator-13-debug-tests-wk2/build/layout-test-results/imported/w3c/IndexedDB-private-browsing/idbobjectstore_createIndex6-event_order-expected.txt
+++ /Volumes/Data/slave/ios-simulator-13-debug-tests-wk2/build/layout-test-results/imported/w3c/IndexedDB-private-browsing/idbobjectstore_createIndex6-event_order-actual.txt
@@ -1,3 +1,3 @@
 
-PASS IDBObjectStore.createIndex() - event order when unique constraint is triggered 
+FAIL IDBObjectStore.createIndex() - event order when unique constraint is triggered assert_array_equals: events lengths differ, expected 8 got 7

Comment 1 Radar WebKit Bug Importer 2020-03-02 13:17:59 PST

<rdar://problem/59964685>

Comment 2 Jason Lawrence 2020-03-02 13:22:35 PST

I have marked these tests as failing while the issue is investigated.
https://trac.webkit.org/changeset/257731/webkit

Comment 3 Jason Lawrence 2020-03-02 13:26:07 PST

I can reproduce this issue with r257710 by running the command below.

run-webkit-tests --iterations 2000 --exit-after-n-failures 3 --no-retry --force -f --debug -1 imported/w3c/IndexedDB-private-browsing/idbobjectstore_createIndex6-event_order.html

[1574/2000] imported/w3c/IndexedDB-private-browsing/idbobjectstore_createIndex6-event_order.html failed unexpectedly (text diff)
[1689/2000] imported/w3c/IndexedDB-private-browsing/idbobjectstore_createIndex6-event_order.html failed unexpectedly (text diff)
1998 tests ran as expected, 2 didn't: