@Test
  public void testByRequestAttributesSequence() throws Exception {
    Attributes keys = new Attributes(1);

    Attributes item = new Attributes(4);
    keys.newSequence(Tag.RequestAttributesSequence, 1).add(item);
    item.setString(Tag.RequestedProcedureID, VR.SH, "P-9913");
    item.setString(Tag.ScheduledProcedureStepID, VR.SH, "9913.1");
    item.setNull(Tag.ReferringPhysicianName, VR.PN);
    item.setString(Tag.AccessionNumber, VR.SH, "A1234");

    Attributes issuer = new Attributes(3);
    item.newSequence(Tag.IssuerOfAccessionNumberSequence, 1).add(issuer);
    issuer.setString(Tag.LocalNamespaceEntityID, VR.UT, "DCM4CHEE_TESTDATA_ACCNO_ISSUER_1");
    issuer.setNull(Tag.UniversalEntityID, VR.UT);
    issuer.setNull(Tag.UniversalEntityIDType, VR.CS);

    query.findSeries(pids("REQ_ATTRS_SEQ"), keys, queryParam(false));
    assertTrue(countMatches(query, 1));
    query.close();
  }
 @Test
 public void testByModalitiesInStudyMatchUnknownCT() throws Exception {
   query.findSeries(pids("MODS_IN_STUDY"), modalitiesInStudy("CT"), queryParam(true));
   assertTrue(countMatches(query, 3));
   query.close();
 }
 @Test
 public void testByModalitiesInStudyPR() throws Exception {
   query.findSeries(pids("MODS_IN_STUDY"), modalitiesInStudy("PR"), queryParam(false));
   assertTrue(countMatches(query, 4));
   query.close();
 }