Closed Bug 1396231 Opened 7 years ago Closed 7 years ago

Frequent Win7-only test_accessiblecaret_selection_mode.py AccessibleCaretSelectionModeTestCase.test_long_press_to_select_when_partial_visible_word_is_selected | AssertionError: 'aaaaaaaa' != u'' when Gecko 57 merges to Beta on 2017-09-14

Categories

(Core :: DOM: Selection, defect, P3)

Product:
Core
Component:
DOM: Selection
Platform:
Unspecified
Windows 7
Type:
defect

Tracking

()

Status:
VERIFIED DUPLICATE of bug 1399204
Tracking Flags:
Tracking Status
firefox57 + disabled

People

(Reporter: RyanVM, Unassigned)

References

Details

(Keywords: intermittent-failure) 

[Tracking Requested - why for this release]: Frequent test failure on the next merge day.

https://treeherder.mozilla.org/logviewer.html#?job_id=127931611&repo=try

TEST-UNEXPECTED-FAIL | test_accessiblecaret_selection_mode.py AccessibleCaretSelectionModeTestCase.test_long_press_to_select_when_partial_visible_word_is_selected | AssertionError: 'aaaaaaaa' != u''

I haven't had a chance to bisect this yet, but it started in the last couple days and is on Win7 only.

To reproduce the build configuration in question, the patches below should suffice.
https://hg.mozilla.org/try/rev/70cb6436d870bc25344b98e8ec3ed1be9cf9afc6
https://hg.mozilla.org/try/rev/30a74bd46d8aa778a3ab706c4c77b567e5355a6d
Try bisection confirms this was caused by bug 1394881. Failure rate is ~20% on opt builds.
Blocks: 1394881
Flags: needinfo?(ato)
Keywords: intermittent-failure
Summary: test_accessiblecaret_selection_mode.py is going to fail frequently on Windows 7 when Gecko 57 merges to Beta on 2017-09-20 → Frequent Win7-only test_accessiblecaret_selection_mode.py AccessibleCaretSelectionModeTestCase.test_long_press_to_select_when_partial_visible_word_is_selected | AssertionError: 'aaaaaaaa' != u'' when Gecko 57 merges to Beta on 2017-09-20
I've verified on m-c tip that this is still happening around the same frequency. Note that per Sylvestre's email today, the date of the 57 merge to Beta is now a week from today (14-Sep) rather than the 20th as was previously the case.
Summary: Frequent Win7-only test_accessiblecaret_selection_mode.py AccessibleCaretSelectionModeTestCase.test_long_press_to_select_when_partial_visible_word_is_selected | AssertionError: 'aaaaaaaa' != u'' when Gecko 57 merges to Beta on 2017-09-20 → Frequent Win7-only test_accessiblecaret_selection_mode.py AccessibleCaretSelectionModeTestCase.test_long_press_to_select_when_partial_visible_word_is_selected | AssertionError: 'aaaaaaaa' != u'' when Gecko 57 merges to Beta on 2017-09-14
See Also: → 1399204
I’ve not been meaning to ignore this, but it’s unclear to me how
and where to reproduce this.  According to https://bugzil.la/1399204
this is now also hit as an intermittent on trunk (m-i currently,
soon m-c?).  But what is unclear to me is what the two patches
linked to in comment #0 changes Marionette’s behaviour?

How would I proceed in reproducing this reliably on m-c?
Depends on: 1399076
Flags: needinfo?(ato)
The patches in #c0 change the Firefox build configuration to mimic how it'll be built once uplifted to Beta. Branding changes, ifdef changes, etc. For whatever reason, those changes combined with bug 1394881 (confirmed with bisection on Try and lots of retriggers) made this test start failing on Win7 around 20% of the time.
Also, if you think bug 1399076 may have helped here, I'd be happy to run another Try push and see?
Flags: needinfo?(ato)
I did a new round of simulations off m-c tip this morning and verified that it's still affected.
Flags: needinfo?(ato)
Priority: -- → P3
Fixed by bug 1399204.
Status: NEW → RESOLVED
Closed: 7 years ago
No longer depends on: 1399076
Resolution: --- → DUPLICATE
Status: RESOLVED → VERIFIED
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