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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 | import { E } from '@endo/eventual-send';
import { makeDefaultExo } from '@metamask/kernel-utils/exo';
import { unwrapTestLogger } from '../test-powers.ts';
import type { TestPowers } from '../test-powers.ts';
/**
* Build function for vats that will run various tests.
*
* @param vatPowers - Special powers granted to this vat.
* @param vatPowers.logger - The logger for the vat.
* @param parameters - Initialization parameters from the vat's config object.
* @param parameters.name - The name of the vat.
* @param parameters.test - The test to run.
* @param _baggage - Root of vat's persistent state (not used here).
* @returns The root object for the new vat.
*/
// eslint-disable-next-line @typescript-eslint/explicit-function-return-type
export function buildRootObject(
vatPowers: TestPowers,
parameters: { name?: string; test?: string } = {},
_baggage: unknown = null,
) {
const name = parameters?.name ?? 'anonymous';
const test = parameters?.test ?? 'unspecified';
const tlog = unwrapTestLogger(vatPowers, name);
/**
* Print a message to the log.
*
* @param message - The message to print.
*/
function log(message: string): void {
// eslint-disable-next-line no-console
console.log(`${name}: ${message}`);
}
log(`buildRootObject`);
log(`configuration parameters: ${JSON.stringify(parameters)}`);
return makeDefaultExo('root', {
async bootstrap(vats: { bob: unknown }) {
log(`bootstrap start`);
tlog(`running test ${test}`);
let doneP: Promise<unknown> = Promise.resolve('no activity');
if (!['promiseArg1', 'promiseArg2', 'promiseArg3'].includes(test)) {
throw Error(`unknown test ${test}`);
}
let resolver: ((value: unknown) => void) | undefined;
const param = new Promise((resolve, _reject) => {
resolver = resolve;
});
if (test === 'promiseArg2') {
tlog(`resolving the promise that will be sent to Bob`);
resolver?.(`${name} said hi before send`);
}
tlog(`sending the promise to Bob`);
const responseFromBob = E(vats.bob).hereIsAPromise(param);
if (test === 'promiseArg1') {
tlog(`resolving the promise that was sent to Bob`);
resolver?.(`${name} said hi after send`);
}
tlog(`awaiting Bob's response`);
doneP = responseFromBob.then(
async (res: unknown) => {
const [bobDoneP, bobDoneMsg] = res as [Promise<unknown>, string];
tlog(`Bob's response to hereIsAPromise: '${bobDoneMsg}'`);
if (test === 'promiseArg3') {
tlog(`resolving the promise that was sent to Bob`);
resolver?.(`${name} said hi after Bob's reply`);
}
return bobDoneP;
},
(rej: unknown) => {
tlog(`Bob's response to hereIsAPromise rejected as '${String(rej)}'`);
return 'bobFail';
},
);
await E(vats.bob).loopback();
return await doneP;
},
// This is a hack that effectively does the job of stdout.flush() even
// though we don't have access to stdout itself here. It makes sure we
// capture all the log output prior to the return value from `bootstrap`
// resolving.
loopback() {
return undefined;
},
async hereIsAPromise(promise: Promise<unknown>) {
log(`hereIsAPromise start`);
const doneP = promise.then(
(res: unknown) => {
tlog(`the promise parameter resolved to '${String(res)}'`);
return 'bobPSucc';
},
(rej: unknown) => {
tlog(`the promise parameter rejected as '${String(rej)}'`);
return 'bobPFail';
},
);
log(`hereIsAPromise done`);
return [doneP, `${name}.hereIsAPromise done`];
},
});
}
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