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// Flags: --unhandled-rejections=strict
'use strict';
const common = require('../common');
const Countdown = require('../common/countdown');
const assert = require('assert');
common.disableCrashOnUnhandledRejection();
// Verify that unhandled rejections always trigger uncaught exceptions instead
// of triggering unhandled rejections.
const err1 = new Error('One');
const err2 = new Error(
'This error originated either by throwing ' +
'inside of an async function without a catch block, or by rejecting a ' +
'promise which was not handled with .catch(). The promise rejected with the' +
' reason "null".'
);
err2.code = 'ERR_UNHANDLED_REJECTION';
Object.defineProperty(err2, 'name', {
value: 'UnhandledPromiseRejection',
writable: true,
configurable: true
});
const errors = [err1, err2];
const identical = [true, false];
const ref = new Promise(() => {
throw err1;
});
// Explicitly reject `null`.
Promise.reject(null);
process.on('warning', common.mustNotCall('warning'));
process.on('unhandledRejection', common.mustCall(2));
process.on('rejectionHandled', common.mustNotCall('rejectionHandled'));
process.on('exit', assert.strictEqual.bind(null, 0));
const timer = setTimeout(() => console.log(ref), 1000);
const counter = new Countdown(2, () => {
clearTimeout(timer);
});
process.on('uncaughtException', common.mustCall((err, origin) => {
counter.dec();
assert.strictEqual(origin, 'unhandledRejection', err);
const knownError = errors.shift();
assert.deepStrictEqual(err, knownError);
// Check if the errors are reference equal.
assert(identical.shift() ? err === knownError : err !== knownError);
}, 2));
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