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Merged
chromium-wpt-export-bot merged 1 commit into from
Feb 13, 2026

Update selectedcontent element to match spec

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Merged

Update selectedcontent element to match spec #57765

Update selectedcontent element to match spec
b2ade53
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Community-TC Integration / wpt-firefox-nightly-results succeeded Feb 13, 2026 in 6m 3s

Community-TC (pull_request)

Collect results for all tests affected by a pull request in firefox.

Details

View task in Taskcluster | View logs in Taskcluster | View task group in Taskcluster

Task Status

Started: 2026-02-13T02:20:07.161Z
Resolved: 2026-02-13T02:22:52.177Z
Task Execution Time: 2 minutes, 45 seconds, 16 milliseconds
Task Status: completed
Reason Resolved: completed
TaskId: P7bjtj4sTX-4SF7eoZXMsA
RunId: 0

Artifacts

- public/logs/live_backing.log
- public/logs/live.log
- public/results/checkrun.md
- public/results/wpt_report.json.gz
- public/results/wpt_screenshot.txt.gz

WPT Command: python3 ./wpt run --channel=nightly --no-fail-on-unexpected --log-wptreport=../artifacts/wpt_report.json --log-wptscreenshot=../artifacts/wpt_screenshot.txt --affected base_head --log-mach-level=info --log-mach=- -y --no-pause --no-restart-on-unexpected --install-fonts --verify-log-full --no-headless --binary=/home/test/build/firefox/firefox firefox

[taskcluster 2026-02-13 02:20:07.275Z] Task ID: P7bjtj4sTX-4SF7eoZXMsA
[taskcluster 2026-02-13 02:20:07.275Z] Worker ID: 8422851846043022529
[taskcluster 2026-02-13 02:20:07.275Z] Worker Group: us-central1-b
[taskcluster 2026-02-13 02:20:07.275Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-02-13 02:20:07.275Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-02-13 02:20:07.275Z] Worker Version: 46.1.0
[taskcluster 2026-02-13 02:20:07.275Z] Public IP: 136.114.60.253
[taskcluster 2026-02-13 02:20:07.275Z] Hostname: proj-wpt-ci-dar7vhbbtkg9y9e8r8fh3w

ac811f28856d - Started downloading
ac811f28856d - Downloaded in 0.037 seconds
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...(371 lines hidden)...

Failed to read: session.screen0.toolbar.maxOver
Setting default value
Failed to read: session.screen0.toolbar.visible
Setting default value
Failed to read: session.screen0.toolbar.alpha
Setting default value
Failed to read: session.screen0.toolbar.layer
Setting default value
Failed to read: session.screen0.toolbar.onhead
Setting default value
Failed to read: session.screen0.toolbar.placement
Setting default value
Failed to read: session.screen0.toolbar.height
Setting default value
Failed to read: session.screen0.iconbar.mode
Setting default value
Failed to read: session.screen0.iconbar.alignment
Setting default value
Failed to read: session.screen0.iconbar.iconWidth
Setting default value
Failed to read: session.screen0.iconbar.iconTextPadding
Setting default value
Failed to read: session.screen0.iconbar.usePixmap
Setting default value
 0:00.00 INFO Set tests_root to /home/test/web-platform-tests
 0:00.00 INFO Set metadata_root to /home/test/web-platform-tests
 0:00.00 INFO Set manifest_update to True
 0:00.00 INFO Set manifest_download to True
 0:11.70 INFO Identified 1 affected tests
 0:11.70 INFO Using certutil /usr/bin/certutil
 0:11.71 INFO Downloading geckodriver
 0:11.71 INFO Attempting to install webdriver from nightly
 0:12.22 INFO Extracted geckodriver to /home/test/web-platform-tests/_venv3/bin/geckodriver
 0:12.23 INFO Installed b'geckodriver 0.36.0 (80200c065fb1 2026-02-10 12:51 +0000)'
 0:16.59 INFO Getting profile data from git ref d5fa7178279c137900f4d0c46793e5ec1df3fb1b
 0:17.16 INFO Test prefs downloaded to /home/test/web-platform-tests/_venv3/profiles/d5fa7178279c137900f4d0c46793e5ec1df3fb1b/149.0a1
[1320] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
 0:17.28 mozversion INFO application_buildid: 20260212213836
 0:17.28 mozversion INFO application_changeset: 06d48ece4edf6a0c4499cc65f627bbb5ad9820eb
 0:17.28 mozversion INFO application_display_name: Firefox Nightly
 0:17.28 mozversion INFO application_id: {ec8030f7-c20a-464f-9b0e-13a3a9e97384}
 0:17.28 mozversion INFO application_name: Firefox
 0:17.28 mozversion INFO application_remotingname: firefox-nightly
 0:17.28 mozversion INFO application_repository: https://hg.mozilla.org/mozilla-central
 0:17.28 mozversion INFO application_vendor: Mozilla
 0:17.28 mozversion INFO application_version: 149.0a1
 0:17.28 mozversion INFO platform_buildid: 20260212213836
 0:17.28 mozversion INFO platform_changeset: 06d48ece4edf6a0c4499cc65f627bbb5ad9820eb
 0:17.28 mozversion INFO platform_repository: https://hg.mozilla.org/mozilla-central
 0:17.28 mozversion INFO platform_version: 149.0a1
 0:22.85 INFO Installed font: Ahem.ttf
 0:23.82 wptserve INFO Starting http server on http://127.0.0.1:8001
 0:23.82 wptserve INFO Starting http server on http://127.0.0.1:8000
 0:23.82 wptserve INFO Starting http server on http://127.0.0.1:8003
 0:23.84 wptserve INFO Starting http server on http://127.0.0.1:8002
 0:23.86 wptserve INFO Starting https server on https://127.0.0.1:8443
 0:23.87 wptserve INFO Starting https server on https://127.0.0.1:8445
 0:23.88 wptserve INFO Starting https server on https://127.0.0.1:8444
 0:23.88 wptserve INFO Starting https server on https://127.0.0.1:8446
 0:23.89 wptserve INFO Starting http2 server on https://127.0.0.1:9000
 0:23.89 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:23.89 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:23.89 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:23.90 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:23.91 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:23.91 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:23.98 wptserve INFO Starting WebTransport over HTTP/3 server on 127.0.0.1:11000
 0:24.27 SUITE_START: web-platform-test - running 1 tests
 0:37.08 INFO Using 1 child processes
 0:37.09 INFO Setting up ssl
 0:37.11 certutil Full command: /usr/bin/certutil -N -d /tmp/tmpsb5fcuwc.mozrunner -f /tmp/tmpsb5fcuwc.mozrunner/.crtdbpw
certutil b''
 0:37.13 certutil b''
 0:37.13 certutil b'\nCertificate Nickname                                         Trust Attributes\n                                                             SSL,S/MIME,JAR/XPI\n\nweb-platform-tests                                           CT,, \n'
 0:37.14 INFO Application command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank -profile /tmp/tmp7s9f23zj
 0:37.15 INFO Starting runner
 0:37.15 pid:1424 Full command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank
pid:1424 [1424] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
 0:37.73 pid:1424 1770949363200	Marionette	INFO	Marionette enabled
 0:37.83 pid:1424 1770949363303	Marionette	INFO	Listening on port 60763
Failed to read: session.screen0.titlebar.left
Setting default value
Failed to read: session.screen0.titlebar.right
Setting default value
 0:40.55 pid:1424 console.error: services.settings:
 0:40.56 pid:1424   Message: EmptyDatabaseError: "main/nimbus-desktop-experiments" has not been synced yet
 0:40.56 pid:1424   Stack:
 0:40.56 pid:1424     EmptyDatabaseError@resource://services-settings/Database.sys.mjs:19:5
 0:40.56 pid:1424 list@resource://services-settings/Database.sys.mjs:96:13
 0:40.69 pid:1424 console.warn: BackupService: "There was an error while trying to get the Document's directory" [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIProperties.get]"  nsresult: "0x80004005 (NS_ERROR_FAILURE)"  location: "JS frame :: resource:///modules/backup/BackupService.sys.mjs :: get docsDirFolderPath :: line 1260"  data: no]
 0:40.90 TEST_START: /html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html
 0:41.56 TEST_END: Test OK. Subtests passed 0/7. Unexpected 7
FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test1 - assert_equals: test1 expected "<select>\n    <button>\n      <selectedcontent><span>span</span> three</selectedcontent>\n    </button>\n    <option><span>span</span> one</option>\n    <option><span>span</span> two</option>\n    <option selected=\"\"><span>span</span> three</option>\n  </select>" but got "<select>\n    \n      \n    \n    <option>span one</option>\n    <option>span two</option>\n    <option selected=\"\">span three</option>\n  </select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7
FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test2 - assert_equals: test2 expected "<select>\n    <selectedcontent>option</selectedcontent>\n    <option>option</option>\n  </select>" but got "<select>\n    \n    <option>option</option>\n  </select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7
FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test3 - assert_equals: test3 expected "<select>\n    <button>\n      <selectedcontent>option</selectedcontent>\n      <selectedcontent>outer2\n        <selectedcontent>inner2</selectedcontent>\n      </selectedcontent>\n    </button>\n    <option>option</option>\n  </select>" but got "<select>\n    \n      outer1\n        inner1\n      \n      outer2\n        inner2\n      \n    \n    <option>option</option>\n  </select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7
FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test4 - assert_equals: test4 expected "<select>\n    <button>\n      <selectedcontent>two</selectedcontent>\n    </button>\n    <div>\n      <option>one</option>\n    </div>\n    <div>\n      <option selected=\"\">two</option>\n    </div>\n  </select>" but got "<select>\n    \n      \n    \n    \n      <option>one</option>\n    \n    \n      <option selected=\"\">two</option>\n    \n  </select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7
FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test5 - assert_equals: test5 expected "<select>\n    <option>option</option>\n    <button>\n      <selectedcontent>option</selectedcontent>\n    </button>\n  </select>" but got "<select>\n    <option>option</option>\n    \n      \n    \n  </select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7
FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test6 - assert_equals: test6 expected "<select multiple=\"\" size=\"1\">\n    <button>\n      <selectedcontent>\n        <selectedcontent></selectedcontent>\n      </selectedcontent>\n      <selectedcontent>\n        <selectedcontent></selectedcontent>\n      </selectedcontent>\n    </button>\n    <option>option</option>\n  </select>" but got "<select multiple=\"\" size=\"1\">\n    \n      \n        \n      \n      \n        \n      \n    \n    <option>option</option>\n  </select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7
FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test7 - assert_equals: test7 expected "<select>\n    <button>\n      <selectedcontent>one</selectedcontent>\n    </button>\n    <option>one</option>\n    <div></div>\n  <option selected=\"\">two</option><option selected=\"\">three</option></select>" but got "<select>\n    \n      \n    \n    <option>one</option>\n    \n  <option selected=\"\">two</option><option selected=\"\">three</option></select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7

 0:41.56 INFO No more tests
 0:41.56 pid:1424 1770949367034	Marionette	INFO	Stopped listening on port 60763
 0:42.29 INFO Browser exited with return code -15
 0:42.16 INFO Closing logging queue
 0:42.16 INFO queue closed
 0:42.30 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 8 checks (7 subtests, 1 tests)
Expected results: 1
Unexpected results: 7
  subtest: 7 (7 fail)

Unexpected Results
------------------
/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html
  FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test1 - assert_equals: test1 expected "<select>\n    <button>\n      <selectedcontent><span>span</span> three</selectedcontent>\n    </button>\n    <option><span>span</span> one</option>\n    <option><span>span</span> two</option>\n    <option selected=\"\"><span>span</span> three</option>\n  </select>" but got "<select>\n    \n      \n    \n    <option>span one</option>\n    <option>span two</option>\n    <option selected=\"\">span three</option>\n  </select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7
  FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test2 - assert_equals: test2 expected "<select>\n    <selectedcontent>option</selectedcontent>\n    <option>option</option>\n  </select>" but got "<select>\n    \n    <option>option</option>\n  </select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7
  FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test3 - assert_equals: test3 expected "<select>\n    <button>\n      <selectedcontent>option</selectedcontent>\n      <selectedcontent>outer2\n        <selectedcontent>inner2</selectedcontent>\n      </selectedcontent>\n    </button>\n    <option>option</option>\n  </select>" but got "<select>\n    \n      outer1\n        inner1\n      \n      outer2\n        inner2\n      \n    \n    <option>option</option>\n  </select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7
  FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test4 - assert_equals: test4 expected "<select>\n    <button>\n      <selectedcontent>two</selectedcontent>\n    </button>\n    <div>\n      <option>one</option>\n    </div>\n    <div>\n      <option selected=\"\">two</option>\n    </div>\n  </select>" but got "<select>\n    \n      \n    \n    \n      <option>one</option>\n    \n    \n      <option selected=\"\">two</option>\n    \n  </select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7
  FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test5 - assert_equals: test5 expected "<select>\n    <option>option</option>\n    <button>\n      <selectedcontent>option</selectedcontent>\n    </button>\n  </select>" but got "<select>\n    <option>option</option>\n    \n      \n    \n  </select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7
  FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test6 - assert_equals: test6 expected "<select multiple=\"\" size=\"1\">\n    <button>\n      <selectedcontent>\n        <selectedcontent></selectedcontent>\n      </selectedcontent>\n      <selectedcontent>\n        <selectedcontent></selectedcontent>\n      </selectedcontent>\n    </button>\n    <option>option</option>\n  </select>" but got "<select multiple=\"\" size=\"1\">\n    \n      \n        \n      \n      \n        \n      \n    \n    <option>option</option>\n  </select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7
  FAIL MutationObserver records during parsing of <select> with <selectedcontent>: test7 - assert_equals: test7 expected "<select>\n    <button>\n      <selectedcontent>one</selectedcontent>\n    </button>\n    <option>one</option>\n    <div></div>\n  <option selected=\"\">two</option><option selected=\"\">three</option></select>" but got "<select>\n    \n      \n    \n    <option>one</option>\n    \n  <option selected=\"\">two</option><option selected=\"\">three</option></select>"
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:463:18
Test.prototype.step@http://web-platform.test:8000/resources/testharness.js:2869:25
test@http://web-platform.test:8000/resources/testharness.js:633:30
@http://web-platform.test:8000/html/semantics/forms/the-select-element/customizable-select/selectedcontent-mutations.html:453:7
 0:42.30 INFO Got 1 unexpected results, with 0 unexpected passes
 0:42.30 wptserve INFO Stopped http server on 127.0.0.1:8000
 0:42.30 wptserve INFO Stopped http server on 127.0.0.1:8001
 0:42.30 wptserve INFO Stopped http server on 127.0.0.1:8002
 0:42.30 wptserve INFO Stopped http server on 127.0.0.1:8003
 0:42.31 wptserve INFO Stopped http server on 127.0.0.1:8443
 0:42.32 wptserve INFO Stopped http server on 127.0.0.1:8444
 0:42.32 wptserve INFO Stopped http server on 127.0.0.1:8446
 0:42.32 wptserve INFO Stopped http server on 127.0.0.1:8445
 0:42.33 wptserve INFO Stopped http server on 127.0.0.1:9000
 0:42.33 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
 0:42.79 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 0:42.79 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 0:42.83 INFO Removed font: Ahem.ttf
 0:42.86 INFO Closing logging queue
 0:42.86 INFO queue closed
 0:42.86 INFO Tolerating 1 unexpected results
[taskcluster 2026-02-13 02:22:50.368Z] === Task Finished ===
[taskcluster 2026-02-13 02:22:51.389Z] Successful task run with exit code: 0 completed in 164.116 seconds
View more details on Community-TC Integration