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Fix flake8 errors

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Extend testdriver.js and wptrunner to test AAMs (platform accessibility APIs) #53733

Fix flake8 errors
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Community-TC Integration / wpt-firefox-nightly-stability succeeded Jan 22, 2026 in 1h 28m 57s

Community-TC (pull_request)

Verify that all tests affected by a pull request are stable when executed in firefox.

Details

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

Task Status

Started: 2026-01-22T19:59:18.525Z
Resolved: 2026-01-22T21:26:34.399Z
Task Execution Time: 1 hour, 27 minutes, 15 seconds, 874 milliseconds
Task Status: completed
Reason Resolved: completed
RunId: 0

Artifacts

- public/logs/live_backing.log
- public/logs/live.log
- public/results/checkrun.md

WPT Command: python3 ./wpt run --channel=nightly --verify --verify-no-chaos-mode --verify-repeat-loop=0 --verify-repeat-restart=10 --github-checks-text-file=/home/test/artifacts/checkrun.md --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 2026-01-22 19:59:18.619Z] Task ID: f8i-tIJNTjm0S4jQER9Wdg
[taskcluster 2026-01-22 19:59:18.619Z] Worker ID: 697281024398147543
[taskcluster 2026-01-22 19:59:18.620Z] Worker Group: us-central1-b
[taskcluster 2026-01-22 19:59:18.620Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-01-22 19:59:18.620Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-01-22 19:59:18.620Z] Worker Version: 46.1.0
[taskcluster 2026-01-22 19:59:18.620Z] Public IP: 34.56.166.205
[taskcluster 2026-01-22 19:59:18.620Z] Hostname: proj-wpt-ci-d7dt5hcps0i5f4hwyvlhba

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    rv = protocol.testdriver.run(url, self.script_resume, test_window=test_window)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 510, in run
    done, rv = handler(result)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 805, in __call__
    return callback(url, payload)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 823, in process_action
    result = action_handler(params)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/actions.py", line 609, in __call__
    return self.protocol.platform_accessibility.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executorplatformaccessibility.py", line 98, in test_accessibility_api
    return self.impl.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 170, in test_accessibility_api
    self.__poll_for_tab_if_necessary(url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 152, in __poll_for_tab_if_necessary
    raise Exception(
Exception: Couldn't find browser firefox in accessibility API ATSPI. Did you turn on accessibility?
ERROR /core-aam/role/button_with_non_false_value_for_aria-haspopup.tentative.html - Traceback (most recent call last):
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 966, in run_func
    self.result = True, self.func(self.protocol, self.url, self.timeout)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 1093, in do_testharness
    rv = protocol.testdriver.run(url, self.script_resume, test_window=test_window)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 510, in run
    done, rv = handler(result)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 805, in __call__
    return callback(url, payload)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 823, in process_action
    result = action_handler(params)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/actions.py", line 609, in __call__
    return self.protocol.platform_accessibility.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executorplatformaccessibility.py", line 98, in test_accessibility_api
    return self.impl.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 170, in test_accessibility_api
    self.__poll_for_tab_if_necessary(url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 152, in __poll_for_tab_if_necessary
    raise Exception(
Exception: Couldn't find browser firefox in accessibility API ATSPI. Did you turn on accessibility?
ERROR /core-aam/role/button_with_non_false_value_for_aria-haspopup.tentative.html - Traceback (most recent call last):
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 966, in run_func
    self.result = True, self.func(self.protocol, self.url, self.timeout)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 1093, in do_testharness
    rv = protocol.testdriver.run(url, self.script_resume, test_window=test_window)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 510, in run
    done, rv = handler(result)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 805, in __call__
    return callback(url, payload)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 823, in process_action
    result = action_handler(params)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/actions.py", line 609, in __call__
    return self.protocol.platform_accessibility.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executorplatformaccessibility.py", line 98, in test_accessibility_api
    return self.impl.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 170, in test_accessibility_api
    self.__poll_for_tab_if_necessary(url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 152, in __poll_for_tab_if_necessary
    raise Exception(
Exception: Couldn't find browser firefox in accessibility API ATSPI. Did you turn on accessibility?
ERROR /core-aam/role/button_with_non_false_value_for_aria-haspopup.tentative.html - Traceback (most recent call last):
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 966, in run_func
    self.result = True, self.func(self.protocol, self.url, self.timeout)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 1093, in do_testharness
    rv = protocol.testdriver.run(url, self.script_resume, test_window=test_window)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 510, in run
    done, rv = handler(result)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 805, in __call__
    return callback(url, payload)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 823, in process_action
    result = action_handler(params)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/actions.py", line 609, in __call__
    return self.protocol.platform_accessibility.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executorplatformaccessibility.py", line 98, in test_accessibility_api
    return self.impl.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 170, in test_accessibility_api
    self.__poll_for_tab_if_necessary(url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 152, in __poll_for_tab_if_necessary
    raise Exception(
Exception: Couldn't find browser firefox in accessibility API ATSPI. Did you turn on accessibility?
ERROR /core-aam/role/button_with_non_false_value_for_aria-haspopup.tentative.html - Traceback (most recent call last):
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 966, in run_func
    self.result = True, self.func(self.protocol, self.url, self.timeout)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 1093, in do_testharness
    rv = protocol.testdriver.run(url, self.script_resume, test_window=test_window)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 510, in run
    done, rv = handler(result)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 805, in __call__
    return callback(url, payload)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 823, in process_action
    result = action_handler(params)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/actions.py", line 609, in __call__
    return self.protocol.platform_accessibility.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executorplatformaccessibility.py", line 98, in test_accessibility_api
    return self.impl.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 170, in test_accessibility_api
    self.__poll_for_tab_if_necessary(url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 152, in __poll_for_tab_if_necessary
    raise Exception(
Exception: Couldn't find browser firefox in accessibility API ATSPI. Did you turn on accessibility?
ERROR /core-aam/role/button_with_non_false_value_for_aria-haspopup.tentative.html - Traceback (most recent call last):
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 966, in run_func
    self.result = True, self.func(self.protocol, self.url, self.timeout)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 1093, in do_testharness
    rv = protocol.testdriver.run(url, self.script_resume, test_window=test_window)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 510, in run
    done, rv = handler(result)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 805, in __call__
    return callback(url, payload)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 823, in process_action
    result = action_handler(params)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/actions.py", line 609, in __call__
    return self.protocol.platform_accessibility.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executorplatformaccessibility.py", line 98, in test_accessibility_api
    return self.impl.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 170, in test_accessibility_api
    self.__poll_for_tab_if_necessary(url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 152, in __poll_for_tab_if_necessary
    raise Exception(
Exception: Couldn't find browser firefox in accessibility API ATSPI. Did you turn on accessibility?
ERROR /core-aam/role/button_with_non_false_value_for_aria-haspopup.tentative.html - Traceback (most recent call last):
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 966, in run_func
    self.result = True, self.func(self.protocol, self.url, self.timeout)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 1093, in do_testharness
    rv = protocol.testdriver.run(url, self.script_resume, test_window=test_window)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py", line 510, in run
    done, rv = handler(result)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 805, in __call__
    return callback(url, payload)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py", line 823, in process_action
    result = action_handler(params)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/actions.py", line 609, in __call__
    return self.protocol.platform_accessibility.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/executorplatformaccessibility.py", line 98, in test_accessibility_api
    return self.impl.test_accessibility_api(dom_id, test, api, url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 170, in test_accessibility_api
    self.__poll_for_tab_if_necessary(url)
  File "/home/test/web-platform-tests/tools/wptrunner/wptrunner/executors/platformaccessibility/executoratspi.py", line 152, in __poll_for_tab_if_necessary
    raise Exception(
Exception: Couldn't find browser firefox in accessibility API ATSPI. Did you turn on accessibility?
85:11.14 INFO Got 70 unexpected results, with 0 unexpected passes
85:11.14 wptserve INFO Stopped http server on 127.0.0.1:8001
85:11.14 wptserve INFO Stopped http server on 127.0.0.1:8003
85:11.14 wptserve INFO Stopped http server on 127.0.0.1:8000
85:11.16 wptserve INFO Stopped http server on 127.0.0.1:8443
85:11.16 wptserve INFO Stopped http server on 127.0.0.1:8002
85:11.16 wptserve INFO Stopped http server on 127.0.0.1:8444
85:11.16 wptserve INFO Stopped http server on 127.0.0.1:9000
85:11.16 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
85:11.16 wptserve INFO Stopped http server on 127.0.0.1:8446
85:11.17 wptserve INFO Stopped http server on 127.0.0.1:8445
85:11.57 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
85:11.57 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
85:11.62 INFO Removed font: Ahem.ttf
85:11.65 INFO Closing logging queue
85:11.65 INFO queue closed
85:11.69 INFO ::: Ran 10 of expected 10 iterations.
85:11.69 INFO ## All results ##

85:11.69 INFO ### /core-aam/attribute/aria-autocomplete.tentative.html ###
85:11.69 INFO | Subtest | Results | Messages |
85:11.69 INFO |---------|---------|----------|
85:11.69 INFO |         | ERROR   |          |
85:11.69 INFO 
85:11.69 INFO ### /core-aam/attribute/aria-braillelabel.tentative.html ###
85:11.69 INFO | Subtest | Results | Messages |
85:11.69 INFO |---------|---------|----------|
85:11.69 INFO |         | ERROR   |          |
85:11.69 INFO 
85:11.69 INFO ### /core-aam/attribute/aria-errormessage.tentative.html ###
85:11.69 INFO | Subtest | Results | Messages |
85:11.69 INFO |---------|---------|----------|
85:11.69 INFO |         | ERROR   |          |
85:11.69 INFO 
85:11.69 INFO ### /core-aam/role/blockquote.tentative.html ###
85:11.69 INFO | Subtest | Results | Messages |
85:11.69 INFO |---------|---------|----------|
85:11.69 INFO |         | ERROR   |          |
85:11.69 INFO 
85:11.69 INFO ### /core-aam/role/button_with_default_values_for_aria-pressed_and_aria-haspopup.tentative.html ###
85:11.69 INFO | Subtest | Results | Messages |
85:11.69 INFO |---------|---------|----------|
85:11.69 INFO |         | ERROR   |          |
85:11.69 INFO 
85:11.69 INFO ### /core-aam/role/button_with_defined_value_for_aria-pressed.tentative.html ###
85:11.69 INFO | Subtest | Results | Messages |
85:11.69 INFO |---------|---------|----------|
85:11.69 INFO |         | ERROR   |          |
85:11.69 INFO 
85:11.69 INFO ### /core-aam/role/button_with_non_false_value_for_aria-haspopup.tentative.html ###
85:11.69 INFO | Subtest | Results | Messages |
85:11.69 INFO |---------|---------|----------|
85:11.69 INFO |         | ERROR   |          |
85:11.69 INFO 
85:11.69 INFO ::: Running tests in a loop with restarts 10 times : PASS
85:11.69 INFO :::
85:11.69 INFO ::: Test verification PASS
85:11.69 INFO :::
/usr/lib/python3.10/multiprocessing/resource_tracker.py:224: UserWarning: resource_tracker: There appear to be 207 leaked semaphore objects to clean up at shutdown
  warnings.warn('resource_tracker: There appear to be %d '
X connection to :99.0 broken (explicit kill or server shutdown).
[taskcluster 2026-01-22 21:26:33.186Z] === Task Finished ===
[taskcluster 2026-01-22 21:26:33.561Z] Successful task run with exit code: 0 completed in 5234.944 seconds
View more details on Community-TC Integration