1234659 - Intermittent test_bug332655-2.html | deleting and inserting RTL char at beginning of line shouldn't change: expected data:image/png;base64,[...]

Status: RESOLVED FIXED

(Core :: Widget: Gtk, defect)

Description

[Daniel Holbert [:dholbert]]

Spinning this off of bug 1221919 (which covers a test_bug582181-1.html intermittent), to cover intermittents in related test test_bug582181-2.html.

Sample failure:
{
 01:40:58 INFO - 264 INFO TEST-UNEXPECTED-FAIL | layout/base/tests/test_bug332655-2.html | deleting and inserting RTL char at beginning of line shouldn't change: expected data:image/png;base64,[...]
 
 01:40:59 INFO - 265 INFO TEST-UNEXPECTED-FAIL | layout/base/tests/test_bug332655-2.html | the order entering Bidi text shouldn't change rendering: expected data:image/png;base64,[...]
}

https://treeherder.mozilla.org/logviewer.html#?repo=mozilla-aurora&job_id=1624323

I'll attach a log-snippet textfile with full data URIs.

The mismatching things here are <input> elements, and it looks like their backgrounds don't quite match (but it's very subtle).

Comment 1

[Daniel Holbert [:dholbert]]

Attachment: gzipped full log

Comment 2

[Daniel Holbert [:dholbert]]

Attachment: just the piece of the log with the test-failure message & data URIs

Comment 3

[Daniel Holbert [:dholbert]]

Attachment: "expected" screenshot

Comment 4

[Daniel Holbert [:dholbert]]

Attachment: "but got" screenshot

Comment 5

[Daniel Holbert [:dholbert]]

Attachment: handmade failure-log, suitable for passing to reftest-analyzer.xhtml

Here's a handmade test-failure log, suitable for viewing with reftest-analyzer.xhtml.

The differences are all visually-imperceptible (to my eye) -- it's stuff like a background of rgb(245,245,245) vs rgb(255,255,255).

Comment 6

[Intermittent Failures Robot]

7 automation job failures were associated with this bug in the last 7 days.

Repository breakdown:
* mozilla-inbound: 7

Platform breakdown:
* linux64: 7

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1234659&startday=2015-12-21&endday=2015-12-27&tree=all

Comment 7

[Intermittent Failures Robot]

31 automation job failures were associated with this bug in the last 7 days.

Repository breakdown:
* mozilla-inbound: 19
* try: 3
* mozilla-central: 3
* fx-team: 3
* mozilla-aurora: 2
* b2g-inbound: 1

Platform breakdown:
* linux64: 31

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1234659&startday=2015-12-28&endday=2016-01-03&tree=all

Comment 8

[Intermittent Failures Robot]

15 automation job failures were associated with this bug yesterday.

Repository breakdown:
* mozilla-inbound: 10
* try: 2
* fx-team: 2
* mozilla-aurora: 1

Platform breakdown:
* linux64: 15

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1234659&startday=2016-01-04&endday=2016-01-04&tree=all

Comment 9

[Daniel Holbert [:dholbert]]

I expect "-moz-appearance: none" should help here, as it did in bug 1204897. I'll write a patch for that.

Comment 10

[Daniel Holbert [:dholbert]]

(In reply to Daniel Holbert [:dholbert] from comment #0)
> Spinning this off of bug 1221919 (which covers a test_bug582181-1.html
> intermittent), to cover intermittents in related test test_bug582181-2.html.

Oops, looks like I misread the log -- there is no failure in test_bug582181-2.html in the log that I filed this bug about -- the failure is in test_bug332655-2.html. (different bug number in the filename)

So this is less of a spin-off of bug 1221919 and is really much more closely related to bug 1204897 (it's the "-2.html" version of that bug's test).

I'm going to land a version of the exact patch from bug 1204897 (just for this second test file) with assumed rs=jfkthame; no sense in spending review-time on a pretty much identical test-tweak.  (jfkthame, hope this is fine by you.)

Comment 11

[Daniel Holbert [:dholbert]]

Attachment: workaround v1

(here's the patch I intend to land, fwiw. Trees are undergoing maintenance at the moment; I'll land this when they're accepting pushes again.)

Comment 12

[Pulsebot]

https://hg.mozilla.org/integration/mozilla-inbound/rev/ceeb1c7b5bd9

Comment 13

[Intermittent Failures Robot]

17 automation job failures were associated with this bug yesterday.

Repository breakdown:
* mozilla-inbound: 8
* fx-team: 4
* mozilla-central: 2
* mozilla-aurora: 2
* b2g-inbound: 1

Platform breakdown:
* linux64: 17

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1234659&startday=2016-01-05&endday=2016-01-05&tree=all

Comment 14

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/mozilla-central/rev/ceeb1c7b5bd9

Comment 15

[Wes Kocher (:KWierso) (Not reading bugmail; email directly if needed)]

https://hg.mozilla.org/releases/mozilla-aurora/rev/9bc67b6d88ca

Comment 16

[Daniel Holbert [:dholbert]]

Thanks for the uplift, KWierso!

Comment 17

[Intermittent Failures Robot]

36 automation job failures were associated with this bug in the last 7 days.

Repository breakdown:
* mozilla-inbound: 18
* fx-team: 8
* mozilla-aurora: 5
* try: 2
* mozilla-central: 2
* b2g-inbound: 1

Platform breakdown:
* linux64: 36

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1234659&startday=2016-01-04&endday=2016-01-10&tree=all