1850752 - Reftests for bug 446100 are flaky / dependent on previous tests when using drawSnapshot.

Status: NEW

(Core :: Graphics, defect)

Description

[Emilio Cobos Álvarez (:emilio)]

See https://treeherder.mozilla.org/jobs?repo=autoland&group_state=expanded&resultStatus=success%2Cpending%2Crunning%2Ctestfailed%2Cbusted%2Cexception&searchStr=linux%2C18.04%2Cx64%2Cwebrender%2Cdebug%2Creftests%2Ctest-linux1804-64-qr%2Fdebug-reftest-snapshot%2Crs8&selectedTaskRun=MHqDd_tTQ0Wey9FMNUNMpg.0&tochange=eccf1dcce67f8194cb6d01a615d4f65b78d53f82&fromchange=44703d904338f06d0175ef0c597ca6021e43d4fc for an example of the failures.

That patch added some pref() lines to previous tests. In bug 1807963 these tests had started passing unexpectedly too.

Something is up with those tests. The only suspicious thing is that those use reftest-zoom. is the drawSnapshot code not waiting properly for zoom changes or something along those lines?

Comment 1

[Jamie Nicol [:jnicol]]

Timothy, Botond, any ideas why drawSnapshot and reftest-zoom may not interact properly together?

Comment 2

[Timothy Nikkel (:tnikkel)]

I think drawSnapshot doesn't work with reftest-zoom.

https://phabricator.services.mozilla.com/D114188#3707672

I suggest annotating it fails-if(useDrawSnapshot) or similar.