public function getRolesReturnsOnlyExistingRoles()
{
$this->inject($this->account, 'roleIdentifiers', ['Acme.Demo:NoLongerThere', $this->administratorRole->getIdentifier()]);
$roles = $this->account->getRoles();
$this->assertCount(1, $roles);
$this->assertArrayHasKey($this->administratorRole->getIdentifier(), $roles);
}