message: update test case.
diff: @@ -39,10 +39,16 @@ $pm->childFunc = function () use ($pm)
  $response->end("ERROR\n");
  return;
  }
  +
  + $ret = $redis->set('key', 'value');
  + if (!$ret) {
  + goto fail;
  + }
  $ret = $redis->get('key');
  if (!$ret) {
  goto fail;
  }
  + assert($ret == "value");
  if (strlen($ret) > 0) {
  $response->end("OK\n");
  }
  