Bug 194503 – http/tests/misc/script-async.html is a flaky text diff failure

• Status: NEW
• Component: Page Loading

[Shawn Roberts]

The following layout test is flaky on Mac

http/tests/misc/script-async.html

Probable cause:

Fails on current build (241262) back to oldest build I can spade (228049)

Reproducible locally with:

run-webkit-tests t241262 http/tests/misc/script-async.html --iterations 500 -f

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=http%2Ftests%2Fmisc%2Fscript-async.html

Diff:

--- /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/http/tests/misc/script-async-expected.txt
+++ /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/http/tests/misc/script-async-actual.txt
@@ -1,2 +1,2 @@
 This tests for proper execution order of scripts with the async attribute https://bugs.webkit.org/show_bug.cgi?id=20710.
-PASS
+FAIL: Expected one of ' async  external  inline  DOMContentLoaded  slowAsync ' || ' external  async  inline  DOMContentLoaded  slowAsync ' || ' external  inline  async  DOMContentLoaded  slowAsync ' || ' external  inline  DOMContentLoaded  async  slowAsync ', Actual=' external  inline  DOMContentLoaded  slowAsync  async '

[Alexey Proskuryakov]

This would seem to indicate incorrect ordering between script loads.