BOOST_CHECK(z_gdu);
if (z_gdu) {
BOOST_CHECK_EQUAL(z_gdu->which, Z_GDU_Z3950);
BOOST_CHECK_EQUAL(z_gdu->u.z3950->which, Z_APDU_searchRequest);
// take query out of package again and check rewrite
BOOST_CHECK(z_gdu);
if (z_gdu) {
BOOST_CHECK_EQUAL(z_gdu->which, Z_GDU_Z3950);
BOOST_CHECK_EQUAL(z_gdu->u.z3950->which, Z_APDU_searchRequest);
// take query out of package again and check rewrite