WPT
wpt / fetch / api / headers / headers-record.any.html
Spec: Fetch ↗
Runs: Chrome 155.0.8040.0 (wpt@105b6a3a5, 2026-09-03) | Firefox 157.0a1 (wpt@e6996908b, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-f436a (wpt@476394464, 2026-09-03) | Servo Servo 0.6 (wpt@7e3d005d7, 2026-09-03) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 13/13 | 13/13 | 13/13 | 13/13 | 13/13 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Passing nothing to Headers constructor | PASS | PASS | PASS | PASS | PASS | — |
| Passing undefined to Headers constructor | PASS | PASS | PASS | PASS | PASS | — |
| Passing null to Headers constructor | PASS | PASS | PASS | PASS | PASS | — |
| Basic operation with one property | PASS | PASS | PASS | PASS | PASS | — |
| Basic operation with one property and a proto | PASS | PASS | PASS | PASS | PASS | — |
| Correct operation ordering with two properties | PASS | PASS | PASS | PASS | PASS | — |
| Correct operation ordering with two properties one of which has an invalid name | PASS | PASS | PASS | PASS | PASS | — |
| Correct operation ordering with two properties one of which has an invalid value | PASS | PASS | PASS | PASS | PASS | — |
| Correct operation ordering with non-enumerable properties | PASS | PASS | PASS | PASS | PASS | — |
| Correct operation ordering with undefined descriptors | PASS | PASS | PASS | PASS | PASS | — |
| Correct operation ordering with repeated keys | PASS | PASS | PASS | PASS | PASS | — |
| Basic operation with Symbol keys | PASS | PASS | PASS | PASS | PASS | — |
| Operation with non-enumerable Symbol keys | PASS | PASS | PASS | PASS | PASS | — |