| PASS If request.[[state]] is "created", then return a promise that resolves to true for known method. | |
| PASS If request.[[state]] is "interactive", then return a promise rejected with an "InvalidStateError" DOMException. | |
| PASS If request.[[state]] is "closed", then return a promise rejected with an "InvalidStateError" DOMException. | |
| PASS If payment method identifier and serialized parts are supported, resolve promise with true. | |
| PASS If a payment method identifier is supported but its serialized parts are not, resolve promise with false. | |
| PASS If payment method identifier is unknown, resolve promise with false. | |
| PASS Optionally, at the user agent's discretion, return a promise rejected with a "NotAllowedError" DOMException. | |