Function test

test/parallel/test-child-process-exec-error.js:27–34

(fn, code, expectPidType = 'number')

const child_process = require('child_process');

function test(fn, code, expectPidType = 'number') {
  const child = fn('does-not-exist', common.mustCall(function(err) {
    assert.strictEqual(err.code, code);
    assert(err.cmd.includes('does-not-exist'));
  }));

  assert.strictEqual(typeof child.pid, expectPidType);
}

// With `shell: true`, expect pid (of the shell)
if (common.isWindows) {