ngcp-panel/t/api-contracts.t

# TODO: try to set reseller_id of contact of a system contract, which should fail

#    TODO: try to delete used contact
#    $req = HTTP::Request->new('DELETE', $uri.'/api/systemcontacts/1');
#    $res = $ua->request($req);
#    ok($res->code == 423, "check delete of used contact");