public function test_get_and_set_subscription_invokers()
{
$eventer = new Eventer([]);
$eventer->subscribe('foo', function () {
});
$event = new GenericEvent('foo');
$this->assertEquals([], $eventer->getSubscriptionInvokers());
$ex = null;
try {
$eventer->dispatch($event);
} catch (Exception $e) {
$ex = $e;
}
$this->assertNotNull($ex);
$eventer->addSubscriptionInvoker(new CallableInvoker());
$eventer->dispatch($event);
$eventer->setSubscriptionInvokers([new CallableInvoker()]);
$eventer->dispatch($event);
}
