Bug 284113 – REGRESSION(287390@main?): [macOS Release] 4x imported/w3c/web-platform-tests/fs tests are flaky (Failure in EWS)

• Status: RESOLVED
• Resolution: FIXED
• Component: New Bugs

[Marta Darbinyan]

The following tests are flaky failures on macOS Release queue. The tests appear as false-positives in EWS as well. The tests regressed around the change 287390@main that modified the tests. 

imported/w3c/web-platform-tests/fs/FileSystemBaseHandle-postMessage-Error.https.window.html
imported/w3c/web-platform-tests/fs/FileSystemFileHandle-getFile.https.any.worker.html 
imported/w3c/web-platform-tests/fs/FileSystemWritableFileStream-piped.https.any.worker.html
imported/w3c/web-platform-tests/fs/FileSystemDirectoryHandle-removeEntry.https.any.worker.html

Error:
-FAIL getFile() provides a file that can be sliced promise_test: Unhandled rejection with value: object "InvalidStateError: The object is in an invalid state."
-FAIL getFile() returns last modified time promise_test: Unhandled rejection with value: object "InvalidStateError: The object is in an invalid state."
+FAIL getFile() provides a file that can be sliced promise_test: Unhandled rejection with value: object "TypeError: writer.write is not a function. (In 'writer.write(new Blob([contents]))', 'writer.write' is undefined)"
+FAIL getFile() returns last modified time promise_test: Unhandled rejection with value: object "TypeError: writer.write is not a function. (In 'writer.write(new Blob(['foo']))', 'writer.write' is undefined)"

Test result: 
https://build.webkit.org/results/Apple-Sequoia-Release-WK2-Tests/287395@main%20(852)/results.html

History: 
https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Ffs%2FFileSystemBaseHandle-postMessage-Error.https.window.html&test=imported%2Fw3c%2Fweb-platform-tests%2Ffs%2FFileSystemDirectoryHandle-removeEntry.https.any.worker.html&test=imported%2Fw3c%2Fweb-platform-tests%2Ffs%2FFileSystemWritableFileStream-piped.https.any.worker.html&test=imported%2Fw3c%2Fweb-platform-tests%2Ffs%2FFileSystemFileHandle-getFile.https.any.worker.html&platform=mac

[Radar WebKit Bug Importer]

<rdar://problem/141013201>

[EWS]

Test gardening commit 287421@main (31de90bfa9f7): <https://commits.webkit.org/287421@main>

Reviewed commits have been landed. Closing PR #37518 and removing active labels.

[Sihui Liu]

Pull request: https://github.com/WebKit/WebKit/pull/37725

[EWS]

Committed 287746@main (652a1eef66b2): <https://commits.webkit.org/287746@main>

Reviewed commits have been landed. Closing PR #37725 and removing active labels.