PSA: Ignore .ini files next to web platform tests

[Jonathan Lee]

If you do not write or review web platform tests, you can skip this email.

Hello blink-dev,

TL;DR: There are .ini files under web_tests/external/wpt/ and web_tests/wpt_internal/ you can ignore for now.

What are these files?

These files were added as part of an ongoing project to run web platform tests in Chromium CQ/CI with wptrunner, the harness that ships with web-platform-tests/wpt.

Like baselines and TestExpectations, each .ini file corresponds to a test and contains expectation data in the structured format wptrunner natively understands. web-platform-tests.org and the Chromium wptrunner user guide document the file format (named “WPT metadata”).

Do I need to update metadata files when making a change?

No, although these files are safe to add, modify, or remove. The WPT importer will use try build results to keep these files up-to-date automatically. These files are not upstreamed to the GitHub repository.

Do I still need to rebaseline or add TestExpectations for web platform tests?

Yes. Because CQ and sheriffed CI still use run_web_tests.py, not wptrunner, the workflow for landing web platform tests in chromium/src has not changed.

Thanks,

Jonathan (on behalf of Blink EngProd)