WPT
wpt / fs / FileSystemBaseHandle-postMessage-Error.https.window.html
Spec: File System ↗
Runs: Chrome 155.0.8042.0 (wpt@a1ecd0c09, 2026-09-04) | Firefox 157.0a1 (wpt@a1ecd0c09, 2026-09-04) | Safari 251 preview (wpt@e7122b73f, 2026-09-04) | Ladybird 1.0-52f0f (wpt@0588f3896, 2026-09-04) | Servo Servo 0.6 (wpt@2c385f65e, 2026-09-04) | 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 | 10/10 | 10/10 | 10/10 | 0/10 | 0/10 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Fail to send and receive messages using a cross origin iframe. | PASS | PASS | PASS | FAIL | FAIL | — |
| Fail to send and receive messages using a cross origin message port in an iframe. | PASS | PASS | PASS | FAIL | FAIL | — |
| Fail to send to a sandboxed iframe. | PASS | PASS | PASS | FAIL | FAIL | — |
| Fail to send messages using a message port to a sandboxed iframe. | PASS | PASS | PASS | FAIL | FAIL | — |
| Fail to send messages to a data URI iframe. | PASS | PASS | PASS | FAIL | FAIL | — |
| Fail to send messages using a message port in a data URI iframe. | PASS | PASS | PASS | FAIL | FAIL | — |
| Fail to send and receive messages using a cross origin window. | PASS | PASS | PASS | FAIL | FAIL | — |
| Fail to send and receive messages using a cross origin message port in a window. | PASS | PASS | PASS | FAIL | FAIL | — |
| Fail to send messages to a sandboxed window. | PASS | PASS | PASS | FAIL | FAIL | — |
| Fail to send messages using a message port to a sandboxed window. | PASS | PASS | PASS | FAIL | FAIL | — |