/IndexedDB/idbdatabase-createObjectStore-exception-order.htm is disabled in Mozilla and flaky in WebKit

[zcorpan]

http://bocoup.github.io/wpt-disabled-tests-report/

Investigate what's up with this test:

Path	Products	Results	Bugs
/IndexedDB/idbdatabase-createObjectStore-exception-order.htm	mozilla webkit	disabled [ Pass Failure ]	https://bugzilla.mozilla.org/show_bug.cgi?id=1336639 https://webkit.org/b/172243

[zcorpan]

@jeffcarp @bevis-tseng any idea how to fix this test?

[zcorpan]

cc @inexorabletash and @pwnall

[inexorabletash]

I'll try and take a look.

(Best guess from code inspection is that the browsers are not following the spec to the letter and so the work done in the setTimeout() races with the abort() call actually aborting the transaction, rather than the abort being processed immediately.)

[inexorabletash]

Hrm, in FF52 at least the failure is due to the error bubbling up to window.onerror. Fixed by either

setup({allow_uncaught_exception:true});

or:

@@ -8,9 +8,11 @@
 <script>
 
 indexeddb_test(
-  (t, db, txn) => {
+  (t, db, txn, rq) => {
     db.createObjectStore('s');
 
+    rq.onerror = e => { e.preventDefault(); };
+
     txn.onabort = () => {

[inexorabletash]

I had thought that FF was removing the event bubbling for IDB since the other browsers hadn't implemented it yet (although we plan to in Chrome)