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'use strict'; // Flags: --expose-internals const common = require('../common'); const assert = require('assert'); const cp = require('child_process'); if (process.argv[2] === 'child') { setTimeout(() => {}, common.platformTimeout(100)); return; } // Monkey patch spawn() to create a child process normally, but destroy the // stdout and stderr streams. This replicates the conditions where the streams // cannot be properly created. const ChildProcess = require('internal/child_process').ChildProcess; const original = ChildProcess.prototype.spawn; ChildProcess.prototype.spawn = function() { const err = original.apply(this, arguments); this.stdout.destroy(); this.stderr.destroy(); this.stdout = null; this.stderr = null; return err; }; function createChild(options, callback) { const cmd = `"${process.execPath}" "${__filename}" child`; return cp.exec(cmd, options, common.mustCall(callback)); } // Verify that normal execution of a child process is handled. { createChild({}, (err, stdout, stderr) => { assert.strictEqual(err, null); assert.strictEqual(stdout, ''); assert.strictEqual(stderr, ''); }); } // Verify that execution with an error event is handled. { const error = new Error('foo'); const child = createChild({}, (err, stdout, stderr) => { assert.strictEqual(err, error); assert.strictEqual(stdout, ''); assert.strictEqual(stderr, ''); }); child.emit('error', error); } // Verify that execution with a killed process is handled. { createChild({ timeout: 1 }, (err, stdout, stderr) => { assert.strictEqual(err.killed, true); assert.strictEqual(stdout, ''); assert.strictEqual(stderr, ''); }); }