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test-primordials-promise.js
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test-primordials-promise.js
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// Flags: --expose-internals
'use strict';
const common = require('../common');
const assert = require('assert');
const {
PromisePrototypeThen,
SafePromiseAll,
SafePromiseAllSettled,
SafePromiseAny,
SafePromisePrototypeFinally,
SafePromiseRace,
} = require('internal/test/binding').primordials;
Array.prototype[Symbol.iterator] = common.mustNotCall('%Array.prototype%[@@iterator]');
Promise.all = common.mustNotCall('%Promise%.all');
Promise.allSettled = common.mustNotCall('%Promise%.allSettled');
Promise.any = common.mustNotCall('%Promise%.any');
Promise.race = common.mustNotCall('%Promise%.race');
Promise.prototype.catch = common.mustNotCall('%Promise.prototype%.catch');
Promise.prototype.finally = common.mustNotCall('%Promise.prototype%.finally');
Promise.prototype.then = common.mustNotCall('%Promise.prototype%.then');
assertIsPromise(PromisePrototypeThen(test(), common.mustCall()));
assertIsPromise(SafePromisePrototypeFinally(test(), common.mustCall()));
assertIsPromise(SafePromiseAll([test()]));
assertIsPromise(SafePromiseAllSettled([test()]));
assertIsPromise(SafePromiseAny([test()]));
assertIsPromise(SafePromiseRace([test()]));
async function test() {
const catchFn = common.mustCall();
const finallyFn = common.mustCall();
try {
await Promise.reject();
} catch {
catchFn();
} finally {
finallyFn();
}
}
function assertIsPromise(promise) {
// Make sure the returned promise is a genuine %Promise% object and not a
// subclass instance.
assert.strictEqual(Object.getPrototypeOf(promise), Promise.prototype);
}