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Project Fission/Enabling Tests with Fission

406 bytes removed, 14:02, 9 October 2019
Removed duplicate entry in tips list.
* JavaScript error: resource:///actors/PageStyleChild.jsm, line 35: SecurityError: Permission denied to access property "document" on cross-origin object This is just an error that always happens, so don’t worry about it if you see it in a specific test.
* SpecialPowers push and pop for prefs have been fixed to work with Fission, but the equivalent methods for permissions have not been.
* Some XPConnect and bindings related tests check that cross-origin operations fail. With Fission, they will fail, but in a different way. These tests can be changed to use http://test1.mochi.test:8888/ (instead of, say, example.org) so that they will be cross-origin but still same-process even with Fission. See bug 1572895. It would probably be good to also check the cross-origin, out-of-process case.
* If the test failure cause is a shutdown hang, leak or crash, reach out to the DOM Fission team, as this is a known Fission issue.
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