public function testAddMessageFileToExportExceptionHandling()
 {
     $filePath = "/tmp/x/y/z/does-not-exist";
     $this->setExpectedException('Illuminate\\Filesystem\\FileNotFoundException', "File not found: {$filePath}");
     JsLocalizationHelper::addMessageFileToExport($filePath, 'xyz::');
 }
 /**
  * Returns the message keys of all messages
  * that are supposed to be sent to the browser.
  *
  * @return array Array of message keys.
  */
 protected function getMessageKeys()
 {
     $messageKeys = Config::get('js-localization::config.messages');
     $messageKeys = JsLocalizationHelper::resolveMessageKeyArray($messageKeys);
     $messageKeys = array_unique(array_merge($messageKeys, JsLocalizationHelper::getAdditionalMessages()));
     return $messageKeys;
 }