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Reject strings in ReadableStream.from - #59594

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MattiasBuelens merged 1 commit into
web-platform-tests:masterfrom
MattiasBuelens:rs-from-reject-strings
Jul 13, 2026
Merged

Reject strings in ReadableStream.from#59594
MattiasBuelens merged 1 commit into
web-platform-tests:masterfrom
MattiasBuelens:rs-from-reject-strings

Reject strings in `ReadableStream.from`

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Community-TC Integration / wpt-firefox-nightly-results succeeded Jun 20, 2026 in 3m 42s

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: 2026-06-20T20:47:25.794Z
Resolved: 2026-06-20T20:51:06.990Z
Task Execution Time: 3 minutes, 41 seconds, 196 milliseconds
Task Status: completed
Reason Resolved: completed
TaskId: Um6xpuhIRj2icXb_34FCrg
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 2026-06-20 20:47:25.976Z] Task ID: Um6xpuhIRj2icXb_34FCrg
[taskcluster 2026-06-20 20:47:25.976Z] Worker ID: 5738067334004425414
[taskcluster 2026-06-20 20:47:25.976Z] Worker Group: us-central1-c
[taskcluster 2026-06-20 20:47:25.976Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-06-20 20:47:25.976Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-06-20 20:47:25.976Z] Worker Version: 46.1.0
[taskcluster 2026-06-20 20:47:25.976Z] Public IP: 34.10.163.235
[taskcluster 2026-06-20 20:47:25.976Z] Hostname: proj-wpt-ci-bkdgbj9-sq-wooonhgjdqa

b1e71f63927a - Started downloading
66587c81b81a - Started downloading
b1e71f63927a - Downloaded in 0.034 seconds
5b82b858ea7e - Started downloading
08c7e224535e - Started downloading
08c7e224535e - Downloaded in 0.043 seconds
66587c81b81a - Downloaded in 0.209 seconds
4f4fb700ef54 - Started downloading
4f4fb700ef54 - Downloaded in 0.001 seconds
32bbaaf98e4c - Started downloading
dd5257950bd4 - Started downloading

...(368 lines hidden)...

Setting default value
Failed to read: session.screen0.toolbar.autoHide
Setting default value
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
Warning: could not load product 'firefox' for argument registration: No module named 'mozleak'
Warning: could not load product 'firefox_android' for argument registration: No module named 'mozrunner'
 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
 0:39.65 INFO Identified 1 affected tests
 0:39.65 INFO Using certutil /usr/bin/certutil
 0:39.65 INFO Downloading geckodriver
 0:39.65 INFO Attempting to install webdriver from nightly
 0:39.94 INFO Extracted geckodriver to /home/test/web-platform-tests/_venv3/bin/geckodriver
 0:39.94 INFO Installed b'geckodriver 0.37.0 (f7f8e60b2f7e 2026-06-09 06:19 +0000)'
mem avail: 14643 of 15806 MiB (92.64%), swap free:    0 of    0 MiB ( 0.00%)
 0:46.04 INFO Getting profile data from git ref 3853f3f0a8a97c9c3a9497ed6d0af7dc7cf6c51c
 0:46.25 INFO Test prefs downloaded to /home/test/web-platform-tests/_venv3/profiles/3853f3f0a8a97c9c3a9497ed6d0af7dc7cf6c51c/154.0a1
 0:46.25 INFO Downloading OpenH264 plugin
 0:51.68 INFO Downloading openh264.json from git ref 3853f3f0a8a97c9c3a9497ed6d0af7dc7cf6c51c
 0:51.72 INFO Downloading OpenH264 plugin from https://ciscobinary.openh264.org/openh264-linux64-652bdb7719f30b52b08e506645a7322ff1b2cc6f.zip
 0:51.97 INFO OpenH264 plugin installed to /home/test/web-platform-tests/_venv3/browsers/nightly/gmp-gmpopenh264/2.6.0
 0:51.97 INFO Using OpenH264 plugin in /home/test/web-platform-tests/_venv3/browsers/nightly/gmp-gmpopenh264/2.6.0
[1946] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
 0:52.03 mozversion INFO application_buildid: 20260620160029
 0:52.03 mozversion INFO application_changeset: 5ebe17a367f832f409b0780f4b01bc6bb885739e
 0:52.03 mozversion INFO application_display_name: Firefox Nightly
 0:52.03 mozversion INFO application_id: {ec8030f7-c20a-464f-9b0e-13a3a9e97384}
 0:52.03 mozversion INFO application_name: Firefox
 0:52.03 mozversion INFO application_remotingname: firefox-nightly
 0:52.03 mozversion INFO application_repository: https://hg.mozilla.org/mozilla-central
 0:52.03 mozversion INFO application_vendor: Mozilla
 0:52.03 mozversion INFO application_version: 154.0a1
 0:52.03 mozversion INFO platform_buildid: 20260620160029
 0:52.03 mozversion INFO platform_changeset: 5ebe17a367f832f409b0780f4b01bc6bb885739e
 0:52.03 mozversion INFO platform_repository: https://hg.mozilla.org/mozilla-central
 0:52.03 mozversion INFO platform_version: 154.0a1
 1:02.13 INFO Installed font: Ahem.ttf
 1:03.10 wptserve INFO Starting http server on http://127.0.0.1:8000
 1:03.18 wptserve INFO Starting http server on http://127.0.0.1:8002
 1:03.18 wptserve INFO Starting http server on http://127.0.0.1:8003
 1:03.22 wptserve INFO Starting http server on http://127.0.0.1:8001
 1:03.26 wptserve INFO Starting https server on https://127.0.0.1:8445
 1:03.28 wptserve INFO Starting https server on https://127.0.0.1:8444
 1:03.29 wptserve INFO Starting https server on https://127.0.0.1:8443
 1:03.30 wptserve INFO Starting https server on https://127.0.0.1:8446
 1:03.31 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 1:03.31 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 1:03.31 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 1:03.32 wptserve INFO Create socket on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 1:03.32 wptserve INFO Bind on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 1:03.32 wptserve INFO Listen on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 1:03.36 wptserve INFO Starting http2 server on https://127.0.0.1:9000
 1:03.38 wptserve INFO Starting WebTransport over HTTP/3 server on 127.0.0.1:11000
 1:03.62 SUITE_START: web-platform-test - running 4 tests
 1:15.07 INFO Using 1 child processes
 1:15.09 INFO Setting up ssl
 1:15.12 certutil Full command: /usr/bin/certutil -N -d /tmp/tmppz3860s_.mozrunner -f /tmp/tmppz3860s_.mozrunner/.crtdbpw
certutil b''
 1:15.15 certutil b''
 1:15.15 certutil b'\nCertificate Nickname                                         Trust Attributes\n                                                             SSL,S/MIME,JAR/XPI\n\nweb-platform-tests                                           CT,, \n'
 1:15.15 INFO Application command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank -profile /tmp/tmp7zc1nrd4
 1:15.17 INFO Starting runner
 1:15.17 pid:2050 Full command: /home/test/build/firefox/firefox --marionette --remote-allow-system-access about:blank
pid:2050 [2050] Sandbox: CanCreateUserNamespace() clone() failure: EPERM
 1:15.77 pid:2050 1781988655397	Marionette	INFO	Marionette enabled
 1:15.88 pid:2050 1781988655504	Marionette	INFO	Listening on port 42987
Failed to read: session.screen0.titlebar.left
Setting default value
Failed to read: session.screen0.titlebar.right
Setting default value
 1:18.58 pid:2050 console.error: services.settings:
 1:18.58 pid:2050   Message: EmptyDatabaseError: "main/nimbus-desktop-experiments" has not been synced yet
 1:18.58 pid:2050   Stack:
 1:18.58 pid:2050     EmptyDatabaseError@resource://services-settings/Database.sys.mjs:19:5
 1:18.58 pid:2050 list@resource://services-settings/Database.sys.mjs:96:13
 1:19.13 TEST_START: /streams/readable-streams/from.any.serviceworker.html
 1:20.18 TEST_END: Test OK. Subtests passed 49/50. Unexpected 1
FAIL ReadableStream.from throws on invalid iterables; specifically a string - assert_throws_js: from() should throw a TypeError function "() => ReadableStream.from(iterable)" did not throw
@https://web-platform.test:8443/streams/readable-streams/from.any.js:185:21
Test.prototype.step@https://web-platform.test:8443/resources/testharness.js:2869:25
test@https://web-platform.test:8443/resources/testharness.js:633:30
@https://web-platform.test:8443/streams/readable-streams/from.any.js:184:7
@https://web-platform.test:8443/streams/readable-streams/from.any.worker.js:9:14

 1:20.18 TEST_START: /streams/readable-streams/from.any.html
 1:20.18 INFO Closing window f15b903b-374b-4f64-b26a-c07417d1156a
 1:20.57 TEST_END: Test OK. Subtests passed 49/50. Unexpected 1
FAIL ReadableStream.from throws on invalid iterables; specifically a string - assert_throws_js: from() should throw a TypeError function "() => ReadableStream.from(iterable)" did not throw
@http://web-platform.test:8000/streams/readable-streams/from.any.js:185:21
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/streams/readable-streams/from.any.js:184:7

 1:20.57 TEST_START: /streams/readable-streams/from.any.worker.html
 1:20.57 INFO Closing window 490f30a0-553a-4ee7-8067-6ca3c09ba5d8
 1:20.96 TEST_END: Test OK. Subtests passed 49/50. Unexpected 1
FAIL ReadableStream.from throws on invalid iterables; specifically a string - assert_throws_js: from() should throw a TypeError function "() => ReadableStream.from(iterable)" did not throw
@http://web-platform.test:8000/streams/readable-streams/from.any.js:185:21
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/streams/readable-streams/from.any.js:184:7
@http://web-platform.test:8000/streams/readable-streams/from.any.worker.js:9:14

 1:20.96 TEST_START: /streams/readable-streams/from.any.sharedworker.html
 1:20.96 INFO Closing window 339b6657-e25c-46b0-8c3c-a664bcd835b4
 1:21.31 TEST_END: Test OK. Subtests passed 49/50. Unexpected 1
FAIL ReadableStream.from throws on invalid iterables; specifically a string - assert_throws_js: from() should throw a TypeError function "() => ReadableStream.from(iterable)" did not throw
@http://web-platform.test:8000/streams/readable-streams/from.any.js:185:21
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/streams/readable-streams/from.any.js:184:7
@http://web-platform.test:8000/streams/readable-streams/from.any.worker.js:9:14

 1:21.31 INFO No more tests
 1:21.31 pid:2050 1781988660940	Marionette	INFO	Stopped listening on port 42987
 1:21.86 INFO Browser exited with return code 0
 1:21.64 INFO Closing logging queue
 1:21.64 INFO queue closed
 1:21.87 SUITE_END

web-platform-test
~~~~~~~~~~~~~~~~~
Ran 204 checks (200 subtests, 4 tests)
Expected results: 200
Unexpected results: 4
  subtest: 4 (4 fail)

Error Summary
-------------
/streams/readable-streams/from.any.serviceworker.html
  FAIL ReadableStream.from throws on invalid iterables; specifically a string - assert_throws_js: from() should throw a TypeError function "() => ReadableStream.from(iterable)" did not throw
@https://web-platform.test:8443/streams/readable-streams/from.any.js:185:21
Test.prototype.step@https://web-platform.test:8443/resources/testharness.js:2869:25
test@https://web-platform.test:8443/resources/testharness.js:633:30
@https://web-platform.test:8443/streams/readable-streams/from.any.js:184:7
@https://web-platform.test:8443/streams/readable-streams/from.any.worker.js:9:14
/streams/readable-streams/from.any.html
  FAIL ReadableStream.from throws on invalid iterables; specifically a string - assert_throws_js: from() should throw a TypeError function "() => ReadableStream.from(iterable)" did not throw
@http://web-platform.test:8000/streams/readable-streams/from.any.js:185:21
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/streams/readable-streams/from.any.js:184:7
/streams/readable-streams/from.any.worker.html
  FAIL ReadableStream.from throws on invalid iterables; specifically a string - assert_throws_js: from() should throw a TypeError function "() => ReadableStream.from(iterable)" did not throw
@http://web-platform.test:8000/streams/readable-streams/from.any.js:185:21
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/streams/readable-streams/from.any.js:184:7
@http://web-platform.test:8000/streams/readable-streams/from.any.worker.js:9:14
/streams/readable-streams/from.any.sharedworker.html
  FAIL ReadableStream.from throws on invalid iterables; specifically a string - assert_throws_js: from() should throw a TypeError function "() => ReadableStream.from(iterable)" did not throw
@http://web-platform.test:8000/streams/readable-streams/from.any.js:185:21
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/streams/readable-streams/from.any.js:184:7
@http://web-platform.test:8000/streams/readable-streams/from.any.worker.js:9:14
 1:21.87 INFO Got 4 unexpected results, with 0 unexpected passes
 1:21.87 wptserve INFO Stopped http server on 127.0.0.1:8001
 1:21.87 wptserve INFO Stopped http server on 127.0.0.1:8002
 1:21.87 wptserve INFO Stopped http server on 127.0.0.1:8003
 1:21.87 wptserve INFO Stopped http server on 127.0.0.1:8000
 1:21.88 wptserve INFO Stopped http server on 127.0.0.1:8443
 1:21.89 wptserve INFO Stopped http server on 127.0.0.1:8445
 1:21.89 wptserve INFO Stopped http server on 127.0.0.1:8446
 1:21.89 wptserve INFO Stopped http server on 127.0.0.1:8444
 1:21.89 wptserve INFO Stopped http server on 127.0.0.1:9000
 1:21.90 wptserve INFO Stopped WebTransport over HTTP/3 server on 127.0.0.1:11000
 1:22.14 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8888))
 1:22.14 wptserve INFO Close on: (<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('127.0.0.1', 8889))
 1:22.19 INFO Removed font: Ahem.ttf
 1:22.22 INFO Closing logging queue
 1:22.22 INFO queue closed
 1:22.22 INFO Tolerating 4 unexpected results
[taskcluster 2026-06-20 20:51:05.114Z] === Task Finished ===
[taskcluster 2026-06-20 20:51:06.109Z] Successful task run with exit code: 0 completed in 220.136 seconds
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