1'use strict'; 2 3require('../common'); 4const assert = require('assert'); 5 6let err; 7// Create some random error frames. 8(function a() { 9 (function b() { 10 (function c() { 11 err = new Error('test error'); 12 })(); 13 })(); 14})(); 15 16(function x() { 17 (function y() { 18 (function z() { 19 assert.ifError(err); 20 })(); 21 })(); 22})(); 23