public function testRoles()
{
$user = new User();
$role = new Role('ROLE_USER');
$user->setState(User::STATE_APPROVED);
$user->addRole($role);
$this->assertTrue($user->hasRole($role));
$this->assertCount(1, $user->getRoles());
$user->removeRole($role);
$this->assertFalse($user->hasRole($role));
$this->assertCount(0, $user->getRoles());
}