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Dataset 20261011-0550-f160c57 · measured 2026-10-11 05:50 UTC
25 of 28 assertions match; 3 do not. parsing acceptance — every value the parser must accept or reject.
| Subtest | Expected | Got | Verdict |
|---|---|---|---|
| "::part(foo bar)" should be a valid selector | accepted | rejected | fail |
| "::part(-foo bar)" should be a valid selector | accepted | rejected | fail |
| "::part(foo):has(li)" should be an invalid selector | rejected | accepted | fail |
| "::part(--foo)" should be a valid selector | — | — | pass |
| "::part(bar)" should be a valid selector | — | — | pass |
| "::part(--)" should be a valid selector | — | — | pass |
| "::part(--0)" should be a valid selector | — | — | pass |
| "::part(foo):focus" should be a valid selector | — | — | pass |
| "::part(foo):hover" should be a valid selector | — | — | pass |
| "::part(foo):focus-within" should be a valid selector | — | — | pass |
| "::part(foo)::before" should be a valid selector | — | — | pass |
| "::part(foo)::after" should be a valid selector | — | — | pass |
| "::part(foo)::placeholder" should be a valid selector | — | — | pass |
| "::part(foo)::first-line" should be a valid selector | — | — | pass |
| "::part(foo)::first-letter" should be a valid selector | — | — | pass |
| "::part(foo)::file-selector-button" should be a valid selector | — | — | pass |
| "::part(foo):is(:focus)" should be a valid selector | — | — | pass |
| ":lang(en)::part(foo)" should be a valid selector | — | — | pass |
| ":dir(ltr)::part(foo)" should be a valid selector | — | — | pass |
| "::part(foo):lang(en)" should be a valid selector | — | — | pass |
| "::part(foo):dir(ltr)" should be a valid selector | — | — | pass |
| "::part(foo):disabled" should be a valid selector | — | — | pass |
| "::part(foo):checked" should be a valid selector | — | — | pass |
| ":part()" should be an invalid selector | — | — | pass |
| ":part(0)" should be an invalid selector | — | — | pass |
| ":part('foo')" should be an invalid selector | — | — | pass |
| ":part([foo])" should be an invalid selector | — | — | pass |
| "::part(foo) + ::part(bar)" should be an invalid selector | — | — | pass |
A passing subtest asked for and got the same thing, so its two middle columns are empty. Dataset 20261011-0550-f160c57, measured 2026-10-11 05:50 UTC. These pages are rebuilt once a day; the figures on the results page follow every accepted run.