Bug 172864 – Layout Test imported/blink/storage/indexeddb/blob-delete-objectstore-db.html is flaky

• Component: New Bugs
• Status: RESOLVED CONFIGURATION CHANGED

[Matt Lewis]

The test imported/blink/storage/indexeddb/blob-delete-objectstore-db.html is a flaky timeout.
According to the dashboard the test is timing out on iOS Simulator WK2 Release.
The majority of the time the test runs from between 1-6 seconds, when it times out it usually runs between 120-140 seconds.

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fblink%2Fstorage%2Findexeddb%2Fblob-delete-objectstore-db.html

https://build.webkit.org/results/Apple%20iOS%2010%20Simulator%20Release%20WK2%20(Tests)/r217709%20(1924)/results.html
https://build.webkit.org/builders/Apple%20iOS%2010%20Simulator%20Release%20WK2%20(Tests)/builds/1924

diff:
--- /Volumes/Data/slave/ios-simulator-10-release-tests-wk2/build/layout-test-results/imported/blink/storage/indexeddb/blob-delete-objectstore-db-expected.txt
+++ /Volumes/Data/slave/ios-simulator-10-release-tests-wk2/build/layout-test-results/imported/blink/storage/indexeddb/blob-delete-objectstore-db-actual.txt
@@ -1,30 +1,5 @@
-Test that deleting an object store and a database containing blobs doesn't crash.
+#PID UNRESPONSIVE - com.apple.WebKit.WebContent.Development (pid 15998)
+FAIL: Timed out waiting for notifyDone to be called
 
-On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-
-
-dbname = "blob-delete-objectstore-db.html"
-indexedDB.deleteDatabase(dbname)
-indexedDB.open(dbname, 1)
-store0 = db.createObjectStore('store0')
-store1 = db.createObjectStore('store1')
-store0.put(blobA, key)
-db.close()
-
-reopen():
-request = indexedDB.open(dbname, 2)
-
-deleteObjectStore():
-db.deleteObjectStore('store0')
-
-didDeleteObjectStore():
-trans = db.transaction('store1', 'readwrite')
-store1 = trans.objectStore('store1')
-store1.put(blobB, key)
-db.close()
-request = indexedDB.deleteDatabase(dbname)
-Database deleted.
-PASS successfullyParsed is true
-
-TEST COMPLETE
-
+#EOF
+#EOF

[Ryan Haddad]

This test was stable for a while, but as of about 2 days ago it has become a very flaky timeout on iOS and macOS.

[Ryan Haddad]

Marked test as flaky in https://trac.webkit.org/changeset/233292/webkit

[Ahmad Saleem]

Removed in favor of WPT in 278496@main.