2011584 - Intermittent browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | single tracking bug

Status: RESOLVED FIXED

(Firefox :: Address Bar, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: chorotan [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=544608764&repo=autoland&task=ZqMav-CoSaW9pJt9C1z09w.0
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/ZqMav-CoSaW9pJt9C1z09w/runs/0/artifacts/public/logs/live_backing.log

---

[task 2026-01-21T04:42:31.458+00:00] 04:42:31     INFO - TEST-PASS | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - Row count after first search - 5 == 5
[task 2026-01-21T04:42:31.458+00:00] 04:42:31     INFO - Waiting for mutations to settle
[task 2026-01-21T04:42:31.459+00:00] 04:42:31     INFO - Observed mutation
[task 2026-01-21T04:42:31.460+00:00] 04:42:31     INFO - Buffered messages logged at 04:42:31
[task 2026-01-21T04:42:31.460+00:00] 04:42:31     INFO - No further mutations observed, stopping
[task 2026-01-21T04:42:31.461+00:00] 04:42:31     INFO - Buffered messages finished
[task 2026-01-21T04:42:31.461+00:00] 04:42:31     INFO - TEST-UNEXPECTED-FAIL | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - Row count during update - 5 == 9
[task 2026-01-21T04:42:31.461+00:00] 04:42:31     INFO - chrome://mochitests/content/browser/browser/components/urlbar/tests/browser-updateResults/head.js:doSuggestedIndexTest:439
[task 2026-01-21T04:42:31.462+00:00] 04:42:31     INFO - chrome://mochitests/content/browser/browser/components/urlbar/tests/browser-updateResults/head.js:func:197
[task 2026-01-21T04:42:31.462+00:00] 04:42:31     INFO - chrome://mochikit/content/browser-test.js:handleTask:1309
[task 2026-01-21T04:42:31.462+00:00] 04:42:31     INFO - chrome://mochikit/content/browser-test.js:_runTaskBasedTest:1399
[task 2026-01-21T04:42:31.462+00:00] 04:42:31     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1546
[task 2026-01-21T04:42:31.462+00:00] 04:42:31     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:1289
[task 2026-01-21T04:42:31.462+00:00] 04:42:31     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1063
[task 2026-01-21T04:42:31.463+00:00] 04:42:31     INFO - TEST-PASS | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - Row at index 0 does not have suggestedIndex during update - true == true
[task 2026-01-21T04:42:31.464+00:00] 04:42:31     INFO - TEST-PASS | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - resultSpan at index 0 during update - 1 == 1
[task 2026-01-21T04:42:31.465+00:00] 04:42:31     INFO - TEST-PASS | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - Row at index 0 is not stale during update - true == true
[task 2026-01-21T04:42:31.465+00:00] 04:42:31     INFO - TEST-PASS | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - Visible at index 0 during update - true == true
[task 2026-01-21T04:42:31.466+00:00] 04:42:31     INFO - TEST-PASS | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - Type at index 1 during update - 2 == 2
[task 2026-01-21T04:42:31.467+00:00] 04:42:31     INFO - TEST-PASS | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - Row at index 1 does not have suggestedIndex during update - true == true
[task 2026-01-21T04:42:31.467+00:00] 04:42:31     INFO - TEST-PASS | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - resultSpan at index 1 during update - 1 == 1
[task 2026-01-21T04:42:31.467+00:00] 04:42:31     INFO - Not taking screenshot here: see the one that was previously logged
[task 2026-01-21T04:42:31.469+00:00] 04:42:31     INFO - TEST-UNEXPECTED-FAIL | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - Row at index 1 is stale during update - null == "true"
[task 2026-01-21T04:42:31.469+00:00] 04:42:31     INFO - chrome://mochitests/content/browser/browser/components/urlbar/tests/browser-updateResults/head.js:doSuggestedIndexTest:486
[task 2026-01-21T04:42:31.469+00:00] 04:42:31     INFO - chrome://mochitests/content/browser/browser/components/urlbar/tests/browser-updateResults/head.js:func:197
[task 2026-01-21T04:42:31.469+00:00] 04:42:31     INFO - chrome://mochikit/content/browser-test.js:handleTask:1309
[task 2026-01-21T04:42:31.469+00:00] 04:42:31     INFO - chrome://mochikit/content/browser-test.js:_runTaskBasedTest:1399
[task 2026-01-21T04:42:31.469+00:00] 04:42:31     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1546
[task 2026-01-21T04:42:31.469+00:00] 04:42:31     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:1289
[task 2026-01-21T04:42:31.469+00:00] 04:42:31     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1063
[task 2026-01-21T04:42:31.469+00:00] 04:42:31     INFO - TEST-PASS | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - Visible at index 1 during update - true == true
[task 2026-01-21T04:42:31.470+00:00] 04:42:31     INFO - TEST-PASS | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - Type at index 2 during update - 2 == 2
[task 2026-01-21T04:42:31.472+00:00] 04:42:31     INFO - TEST-PASS | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - Row at index 2 does not have suggestedIndex during update - true == true
[task 2026-01-21T04:42:31.472+00:00] 04:42:31     INFO - TEST-PASS | browser/components/urlbar/tests/browser-updateResults/browser_suggestedIndex_5_search_5_url.js | test_3 - resultSpan at index 2 during update - 1 == 1
[task 2026-01-21T04:42:31.472+00:00] 04:42:31     INFO - Not taking screenshot here: see the one that was previously logged

Comment 1

[Intermittent Failures Robot]

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

Repository breakdown:

• autoland: 2

Table

	no_variant
windows11-x86/debug	2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2011584&startday=2026-01-19&endday=2026-01-25&tree=all

Comment 2

[Intermittent Failures Robot]

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

Repository breakdown:

• autoland: 1

Table

	msix
windows11-x86_64/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2011584&startday=2026-02-02&endday=2026-02-08&tree=all

Comment 3

[BugBot [:suhaib / :marco]]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup
For more information, please visit BugBot documentation.

Comment 4

[Intermittent Failures Robot]

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

Repository breakdown:

• try: 1
• autoland: 1

Table

	msix	no_variant
windows11-x86_64/asan		1
windows11-x86_64/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2011584&startday=2026-03-02&endday=2026-03-08&tree=all

Comment 5

[Intermittent Failures Robot]

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

Repository breakdown:

• autoland: 1

Table

	no_variant
windows11-x86/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2011584&startday=2026-03-09&endday=2026-03-15&tree=all

Comment 6

[Treeherder Bug Filer]

New failure instance: https://treeherder.mozilla.org/logviewer?job_id=554603178&repo=mozilla-central

Comment 7

[Intermittent Failures Robot]

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

Repository breakdown:

• autoland: 1
• mozilla-central: 1

Table

	no_variant
windows11-x86_64/asan	2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2011584&startday=2026-03-16&endday=2026-03-22&tree=all

Comment 8

[Intermittent Failures Robot]

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

Repository breakdown:

• autoland: 2
• mozilla-beta: 2

Table

	no_variant
windows11-x86/debug	1
windows11-x86_64/asan	3

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2011584&startday=2026-03-23&endday=2026-03-29&tree=all

Comment 9

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-beta: 1

Table

	no_variant
windows11-x86_64/asan	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2011584&startday=2026-04-08&endday=2026-04-14&tree=all

Comment 10

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-beta: 3
• autoland: 1

Table

	no_variant
windows11-x86_64/asan	3
windows11-x86_64/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2011584&startday=2026-04-13&endday=2026-04-19&tree=all

Comment 11

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-beta: 3

Table

	no_variant
windows11-x86_64/asan	2
windows11-x86_64/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2011584&startday=2026-04-20&endday=2026-04-26&tree=all

Comment 12

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-beta: 3
• mozilla-release: 1

Table

	msix	no_variant
windows11-x86/debug		1
windows11-x86_64/asan		1
windows11-x86_64/debug	1
windows11-x86_64/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2011584&startday=2026-04-27&endday=2026-05-03&tree=all

Comment 13

[Intermittent Failures Robot]

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

Repository breakdown:

• autoland: 1

Table

	no_variant
windows11-x86/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2011584&startday=2026-05-04&endday=2026-05-10&tree=all

Comment 14

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-beta: 1

Table

	msix
windows11-x86_64/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2011584&startday=2026-05-11&endday=2026-05-17&tree=all

Comment 15

[Marco Bonardo [:mak] (Away 10-21 August)]

Attachment: Bug 2011584 - Fix intermittent browser-updateResults tests.

Replace the unreliable MutationObserver heuristic in doSuggestedIndexTest
with a sinon stub on view.onQueryResults, which fires synchronously right
after #updateResults() and is unaffected by DOMLocalization timing or focus
loss delays.

Comment 16

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/75e192cd0f7f
https://hg.mozilla.org/integration/autoland/rev/acd3d156d691
Fix intermittent browser-updateResults tests. r=urlbar-reviewers,daleharvey

Comment 17

[amarc]

https://hg.mozilla.org/mozilla-central/rev/acd3d156d691

Comment 18

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-beta: 1

Table

	msix
windows11-x86_64/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2011584&startday=2026-06-15&endday=2026-06-21&tree=all