nodejs/test/simple/test-child-process-exec-error.js

// Copyright Joyent, Inc. and other Node contributors.
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//
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var common = require('../common');
var assert = require('assert');
var child_process = require('child_process');

function test(fun, code) {
  var errors = 0;

  fun('does-not-exist', function(err) {
    assert.equal(err.code, code);
    errors++;
  });

  process.on('exit', function() {
    assert.equal(errors, 1);
  });
}

if (process.platform === 'win32') {
  test(child_process.exec, 1); // exit code of cmd.exe
} else {
  test(child_process.exec, 127); // exit code of /bin/sh
}

test(child_process.execFile, 'ENOENT');