Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 | import { E } from '@endo/eventual-send';
import { makePromiseKit } from '@endo/promise-kit';
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}`);
}
/**
* Test if a value is a promise.
*
* @param value - The value to test.
* @returns True iff `value` is a promise.
*/
function isPromise(value: unknown): boolean {
return Promise.resolve(value) === value;
}
log(`buildRootObject`);
log(`configuration parameters: ${JSON.stringify(parameters)}`);
let promise: Promise<unknown>;
let resolve: (value: unknown) => void;
return makeDefaultExo('root', {
async bootstrap(vats: { bob: unknown; carol: unknown }) {
log(`bootstrap start`);
tlog(`running test ${test}`);
const promiseX = E(vats.bob).genPromise();
const promiseY = E(vats.carol).genPromise();
await E(vats.bob).resolve([promiseY]);
await E(vats.carol).resolve([promiseX]);
const resolutionX = (await promiseX) as unknown[];
const resolutionY = (await promiseY) as unknown[];
tlog(`isPromise(resolutionX[0]): ${isPromise(resolutionX[0])}`);
tlog(`isPromise(resolutionY[0]): ${isPromise(resolutionY[0])}`);
await E(vats.bob).loopback();
return 'done';
},
// 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 genPromise() {
tlog(`genPromise`);
const { promise: aPromise, resolve: aResolve } = makePromiseKit();
promise = aPromise;
resolve = aResolve;
return promise;
},
resolve(resolution: unknown) {
tlog(`resolve`);
resolve(resolution);
},
});
}
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