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| Current File : //proc/self/root/home/ubuntu/node-v16.18.1/test/parallel/test-promise-hook-on-init.js |
'use strict';
const common = require('../common');
const assert = require('assert');
const { promiseHooks } = require('v8');
assert.throws(() => {
promiseHooks.onInit(async function() { });
}, /The "initHook" argument must be of type function/);
assert.throws(() => {
promiseHooks.onInit(async function*() { });
}, /The "initHook" argument must be of type function/);
let seenPromise;
let seenParent;
const stop = promiseHooks.onInit(common.mustCall((promise, parent) => {
seenPromise = promise;
seenParent = parent;
}, 2));
const parent = Promise.resolve();
assert.strictEqual(seenPromise, parent);
assert.strictEqual(seenParent, undefined);
const child = parent.then();
assert.strictEqual(seenPromise, child);
assert.strictEqual(seenParent, parent);
seenPromise = undefined;
seenParent = undefined;
stop();
Promise.resolve();
assert.strictEqual(seenPromise, undefined);
assert.strictEqual(seenParent, undefined);
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