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nodejs/test/async-hooks/test-promise.chain-promise-before-init-hooks.js

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'use strict';
const common = require('../common');
const assert = require('assert');
const initHooks = require('./init-hooks');
const { checkInvocations } = require('./hook-checks');
const p = new Promise(common.mustCall(function executor(resolve, reject) {
resolve(5);
}));
p.then(function afterresolution(val) {
assert.strictEqual(val, 5);
return val;
});
// init hooks after chained promise is created
const hooks = initHooks();
hooks._allowNoInit = true;
hooks.enable();
process.on('exit', function onexit() {
hooks.disable();
hooks.sanityCheck('PROMISE');
// Because the init event was never emitted the hooks listener doesn't
// know what the type was. Thus check for Unknown rather than PROMISE.
const as = hooks.activitiesOfTypes('PROMISE');
const unknown = hooks.activitiesOfTypes('Unknown');
assert.strictEqual(as.length, 0);
assert.strictEqual(unknown.length, 1);
const a0 = unknown[0];
assert.strictEqual(a0.type, 'Unknown');
assert.strictEqual(typeof a0.uid, 'number');
checkInvocations(a0, { before: 1, after: 1 }, 'when process exits');
});