WPT
wpt / serial / idlharness.https.any.worker.html
Spec: Web Serial API ↗
Runs: Chrome 155.0.8038.0 (wpt@b1a7025f8, 2026-09-02) | Firefox 157.0a1 (wpt@b1a7025f8, 2026-09-02) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-a7884 (wpt@b1a7025f8, 2026-09-02) | Servo Servo 0.5 (wpt@2ccd2cbf8, 2026-09-01) | Blitz 7727414ca (wpt@a95401e4e, 2026-09-02)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 56/56 | 56/56 | 21/56 | 56/56 | 21/56 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| idl_test setup | PASS | PASS | PASS | PASS | PASS | — |
| idl_test validation | PASS | PASS | PASS | PASS | PASS | — |
| Partial interface Navigator: original interface defined | PASS | PASS | PASS | PASS | PASS | — |
| Partial interface Navigator: valid exposure set | PASS | PASS | PASS | PASS | PASS | — |
| Partial interface Navigator: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| Partial interface WorkerNavigator: original interface defined | PASS | PASS | PASS | PASS | PASS | — |
| Partial interface WorkerNavigator: valid exposure set | PASS | PASS | PASS | PASS | PASS | — |
| Partial interface WorkerNavigator: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| Partial interface Navigator[2]: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| Partial interface mixin NavigatorID: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| Navigator includes NavigatorID: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| Navigator includes NavigatorLanguage: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| Navigator includes NavigatorOnLine: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| Navigator includes NavigatorContentUtils: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| Navigator includes NavigatorCookies: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| Navigator includes NavigatorPlugins: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| Navigator includes NavigatorConcurrentHardware: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| WorkerNavigator includes NavigatorID: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| WorkerNavigator includes NavigatorLanguage: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| WorkerNavigator includes NavigatorOnLine: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| WorkerNavigator includes NavigatorConcurrentHardware: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| Serial interface: existence and properties of interface object | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial interface object length | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial interface object name | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial interface: existence and properties of interface prototype object | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial interface: existence and properties of interface prototype object's "constructor" property | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial interface: existence and properties of interface prototype object's @@unscopables property | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial interface: attribute onconnect | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial interface: attribute ondisconnect | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial interface: operation getPorts() | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial interface: member requestPort | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial must be primary interface of navigator.serial | PASS | PASS | FAIL | PASS | FAIL | — |
| Stringification of navigator.serial | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial interface: navigator.serial must inherit property "onconnect" with the proper type | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial interface: navigator.serial must inherit property "ondisconnect" with the proper type | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial interface: navigator.serial must inherit property "getPorts()" with the proper type | PASS | PASS | FAIL | PASS | FAIL | — |
| Serial interface: navigator.serial must not have property "requestPort" | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: existence and properties of interface object | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface object length | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface object name | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: existence and properties of interface prototype object | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: existence and properties of interface prototype object's "constructor" property | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: existence and properties of interface prototype object's @@unscopables property | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: attribute onconnect | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: attribute ondisconnect | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: attribute connected | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: attribute readable | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: attribute writable | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: operation getInfo() | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: operation open(SerialOptions) | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: operation setSignals(optional SerialOutputSignals) | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: operation getSignals() | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: operation close() | PASS | PASS | FAIL | PASS | FAIL | — |
| SerialPort interface: operation forget() | PASS | PASS | FAIL | PASS | FAIL | — |
| WorkerNavigator interface: attribute serial | PASS | PASS | FAIL | PASS | FAIL | — |
| WorkerNavigator interface: navigator must inherit property "serial" with the proper type | PASS | PASS | FAIL | PASS | FAIL | — |