/**
  * @expectedException \Symfony\Component\Security\Core\Exception\UsernameNotFoundException
  */
 public function testLoadUserByUsernameDoesNotExist()
 {
     $provider = new InMemoryUserProvider();
     $provider->loadUserByUsername('fabien');
 }
 /**
  * Determine if the provided class name is supported or not.
  * @param string $class
  * @return boolean
  */
 public function supportsClass($class)
 {
     return $this->userProvider->supportsClass($class);
 }