Bug 188020 - Layout Test imported/w3c/web-platform-tests/2dcontext/imagebitmap/createImageBitmap-drawImage.html is a flaky failure
Summary: Layout Test imported/w3c/web-platform-tests/2dcontext/imagebitmap/createImage...
Status: REOPENED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Tools / Tests (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
: 188019 (view as bug list)
Depends on:
Blocks:
 
Reported: 2018-07-25 14:27 PDT by Dawei Fenton (:realdawei)
Modified: 2018-09-17 09:46 PDT (History)
4 users (show)

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Description Dawei Fenton (:realdawei) 2018-07-25 14:27:09 PDT
The following layout test is flaky on iOS Simulator Wk2 Debug and Release

imported/w3c/web-platform-tests/2dcontext/imagebitmap/createImageBitmap-drawImage.html

Probable cause:

Unknown, test has been flaky on both Release and Debug since around 7/1/2018 but since 7/24 the failure rate has accelerated in Debug

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2F2dcontext%2Fimagebitmap%2FcreateImageBitmap-drawImage.html
--- /Volumes/Data/slave/ios-simulator-11-release-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/2dcontext/imagebitmap/createImageBitmap-drawImage-expected.txt
+++ /Volumes/Data/slave/ios-simulator-11-release-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/2dcontext/imagebitmap/createImageBitmap-drawImage-actual.txt
@@ -1,3 +1,6 @@
+CONSOLE MESSAGE: Unhandled Promise Rejection: [object Event]
+
+Harness Error (FAIL), message = undefined
 
 PASS createImageBitmap from an HTMLCanvasElement, and drawImage on the created ImageBitmap 
 PASS createImageBitmap from an HTMLCanvasElement scaled down, and drawImage on the created ImageBitmap 
@@ -9,11 +12,11 @@
 PASS createImageBitmap from an HTMLVideoElement scaled up, and drawImage on the created ImageBitmap 
 PASS createImageBitmap from an HTMLVideoElement resized, and drawImage on the created ImageBitmap 
 PASS createImageBitmap from an HTMLVideoElement with negative sw/sh, and drawImage on the created ImageBitmap 
-PASS createImageBitmap from an HTMLVideoElement from a data URL, and drawImage on the created ImageBitmap 
-PASS createImageBitmap from an HTMLVideoElement from a data URL scaled down, and drawImage on the created ImageBitmap 
-PASS createImageBitmap from an HTMLVideoElement from a data URL scaled up, and drawImage on the created ImageBitmap 
-PASS createImageBitmap from an HTMLVideoElement from a data URL resized, and drawImage on the created ImageBitmap 
-PASS createImageBitmap from an HTMLVideoElement from a data URL with negative sw/sh, and drawImage on the created ImageBitmap 
+FAIL createImageBitmap from an HTMLVideoElement from a data URL, and drawImage on the created ImageBitmap promise_test: Unhandled rejection with value: object "[object Event]"
+FAIL createImageBitmap from an HTMLVideoElement from a data URL scaled down, and drawImage on the created ImageBitmap promise_test: Unhandled rejection with value: object "[object Event]"
+FAIL createImageBitmap from an HTMLVideoElement from a data URL scaled up, and drawImage on the created ImageBitmap promise_test: Unhandled rejection with value: object "[object Event]"
+FAIL createImageBitmap from an HTMLVideoElement from a data URL resized, and drawImage on the created ImageBitmap promise_test: Unhandled rejection with value: object "[object Event]"
+FAIL createImageBitmap from an HTMLVideoElement from a data URL with negative sw/sh, and drawImage on the created ImageBitmap promise_test: Unhandled rejection with value: object "[object Event]"
 PASS createImageBitmap from a bitmap HTMLImageElement, and drawImage on the created ImageBitmap 
 PASS createImageBitmap from a bitmap HTMLImageElement scaled down, and drawImage on the created ImageBitmap 
 PASS createImageBitmap from a bitmap HTMLImageElement scaled up, and drawImage on the created ImageBitmap
Comment 1 Dawei Fenton (:realdawei) 2018-07-25 14:28:01 PDT
*** Bug 188019 has been marked as a duplicate of this bug. ***
Comment 2 Dawei Fenton (:realdawei) 2018-08-01 13:50:47 PDT
I've been able to repro locally using the following command

run-webkit-tests --no-retry imported/w3c/web-platform-tests/2dcontext/imagebitmap/createImageBitmap-drawImage.html --iterations=1000 -f -g
Comment 3 Dawei Fenton (:realdawei) 2018-09-17 09:43:58 PDT
Test marked as flaky in: https://trac.webkit.org/changeset/236065/webkit
Comment 4 Radar WebKit Bug Importer 2018-09-17 09:44:25 PDT
<rdar://problem/44523117>
Comment 5 Dawei Fenton (:realdawei) 2018-09-17 09:46:49 PDT
re-opening, because test was only marked as flaky, issue has not been resolved.