/**
* Validates a plugin's event callbacks.
*
* @param \Phergie\Irc\Bot\React\PluginInterface $plugin
* @throws \RuntimeException if any event callback is invalid
*/
protected function validatePluginEvents(PluginInterface $plugin)
{
$events = $plugin->getSubscribedEvents();
if (!is_array($events)) {
throw new \RuntimeException('Plugin of class ' . get_class($plugin) . ' has getSubscribedEvents() implementation' . ' that does not return an array');
}
foreach ($events as $event => $callback) {
if (!is_string($event) || !is_callable([$plugin, $callback]) && !is_callable($callback)) {
throw new \RuntimeException('Plugin of class ' . get_class($plugin) . ' returns non-string event name or invalid callback' . ' for event "' . $event . '"');
}
}
}
