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Test suites for Web platform specs — including WHATWG, W3C, and others

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WebKit export from bug: [\[view-transitions\] Exclude fragmented boxes from capture](https://bugs.webkit.org/show_bug.cgi?id=265734)

wg-css
webkit-export
css-view-transitions

Add tests for edge cases, event model, revocation, and worker permissions. Closes https://github.com/w3c/permissions/issues/460

permissions
wg-s_webappsec

The current serialization of the argument to CSS circle() and ellipse() was not following the spec, which outlines exactly how specified and computed serialization should behave. This updates the implementation...

wg-css
css-shapes
css-masking

Across the last 90 days, the "Update Wasm Tests" workflow has been one of the top failures: https://github.com/web-platform-tests/wpt/actions/metrics/performance?dateRangeType=DATE_RANGE_TYPE_CUSTOM&filters=workflow_file_name%3Aupdate-wasm-tests.yml&range=1740960000000-1748736000000 This shows a 21% failure rate. https://github.com/web-platform-tests/wpt/actions/workflows/update-wasm-tests.yml?query=is%3Afailure shows this isn't very often,...

infra
GitHub Actions
github_actions

Bumps [types-psutil](https://github.com/typeshed-internal/stub_uploader) from 6.1.0.20241221 to 7.0.0.20250601. Commits See full diff in compare view [![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=types-psutil&package-manager=pip&previous-version=6.1.0.20241221&new-version=7.0.0.20250601)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter...

infra
wptrunner
dependencies
python

Bumps [pytest](https://github.com/pytest-dev/pytest) from 8.3.2 to 8.4.0. Release notes Sourced from pytest's releases. 8.4.0 pytest 8.4.0 (2025-06-02) Removals and backward incompatible breaking changes #11372: Async tests will now fail, instead of...

infra
dependencies
python
requirements_pytest.txt

Parsing (invalid) HTTP/1.1 responses is not fully defined in [HTTP](https://www.rfc-editor.org/rfc/rfc9110) and [Fetch](https://fetch.spec.whatwg.org/) and browser behavior diverges from the specs and between different browsers and there are not many tests in...

infra
fetch

Safari gives: ERROR message: Unhandled rejection: Old view transition aborted by new view transition. Firefox gives: ERROR message: Unhandled rejection: Skipped ViewTransition due to another transition starting Other than that...

wg-css
css-view-transitions

Instead of injecting the style in `` shadow tree for each update, we attach an embedded stylesheet `layout/ stylesheet/details.css` for that shadow DOM. The embedded stylesheet is introduced with it's...

html
do not merge yet
servo-export