blob: 2b22b425b291946c1d7cdcc3cacb3b2cd0232e11 (
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'use strict';
const common = require('../common');
const assert = require('assert');
const EventEmitter = require('events');
const EE = new EventEmitter();
const theErr = new Error('MyError');
EE.on(
EventEmitter.errorMonitor,
common.mustCall(function onErrorMonitor(e) {
assert.strictEqual(e, theErr);
}, 3)
);
// Verify with no error listener
assert.throws(
() => EE.emit('error', theErr), theErr
);
// Verify with error listener
EE.once('error', common.mustCall((e) => assert.strictEqual(e, theErr)));
EE.emit('error', theErr);
// Verify it works with once
process.nextTick(() => EE.emit('error', theErr));
assert.rejects(EventEmitter.once(EE, 'notTriggered'), theErr);
// Only error events trigger error monitor
EE.on('aEvent', common.mustCall());
EE.emit('aEvent');
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