public function testOnlyRunsOnIdentifyEvent()
{
$id = new GenericIdentity('superman');
$id->setCredential('tower');
$e = new Authenticate($id);
$i = new Callback('ident1', function (Event $e) {
throw new \Exception("should not run");
});
self::assertNull($i->discern($e));
}
private function buildAuthenticateEvent()
{
$id = new GenericIdentity('test');
$id->setCredential('test');
return new Authenticate($id);
}