1232979 - abs-pos/scrollframe-2.html fails on new linux64 docker container

Status: RESOLVED FIXED

(Taskcluster :: Services, defect)

Description

[Joel Maher ( :jmaher ) (UTC -8)]

this is the error we get in the log file:
REFTEST TEST-UNEXPECTED-FAIL | file:///home/worker/workspace/build/tests/reftest/tests/layout/reftests/abs-pos/scrollframe-2.html | image comparison (==), max difference: 1, number of differing pixels: 1

you can see the difference here:
http://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://queue.taskcluster.net/v1/task/Og4ayYWjQOC4dwpC3js6Rw/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

I suspect this is a small issue similar to bug 1232316.  For reference, the try run is here:
https://treeherder.mozilla.org/#/jobs?repo=try&revision=0a238c213d3a (we care about R1 in this case)

here is a link to the test file:
https://dxr.mozilla.org/mozilla-central/source/layout/reftests/abs-pos/scrollframe-2.html

and the reference:
https://dxr.mozilla.org/mozilla-central/source/layout/reftests/abs-pos/scrollframe-2-ref.html

this already has a lot of fuzzy conditions around it:
https://dxr.mozilla.org/mozilla-central/source/layout/reftests/abs-pos/reftest.list#52

if we were to solve this with a fuzzy-if condition we could add:
fuzzy-if(gtkWidget,1,1)

Comment 1

[Joel Maher ( :jmaher ) (UTC -8)]

:ehsan, do you have ideas on the proper fix here?  as you can see we have done some fuzzy-if in the past.  Other techniques are to increase the font size.  maybe in this case we have incorrect font packages.

Comment 2

[(no longer active)]

I guess you can adjust the fuzzy pixel count or some such.

Comment 3

[Joel Maher ( :jmaher ) (UTC -8)]

Attachment: add fuzzy-if for failing test case

going the simple route of adding a fuzzy-if for linux.  Tested that this doesn't affect our existing automation and fixes our new automation.

Comment 4

[(no longer active)]

Comment on attachment 8699406 [details] [diff] [review]
add fuzzy-if for failing test case

Review of attachment 8699406 [details] [diff] [review]:
-----------------------------------------------------------------

rs=me

Comment 5

[Pulsebot]

https://hg.mozilla.org/integration/mozilla-inbound/rev/f569c7e03c23

Comment 6

[Carsten Book [:Tomcat]]

https://hg.mozilla.org/mozilla-central/rev/f569c7e03c23

Comment 7

[Pete Moore [:pmoore][:pete]]

Moving closed bugs across to new Bugzilla product "TaskCluster".