public function testClearAllPersistentData()
{
$persistent_storage = new PersistentStorage(TEST_CLIENT_ID);
$rand_key = PersistentStorage::$supported_keys[array_rand(PersistentStorage::$supported_keys)];
$data = 'test-data';
$persistent_storage->setPersistentData($rand_key, $data);
$persistent_storage->clearAllPersistentData();
$this->assertEquals($persistent_storage->getPersistentData($rand_key, 'default'), 'default');
}
/**
* Clear all persistent data. Log out
*/
public function logout()
{
$this->persistent_storage->clearAllPersistentData();
$this->setState(null);
$this->setAccessToken(null);
}