@Test
  public final void testListExternalData() {
    testCreateDataSetWithSample();
    final IExternalDataDAO externalDataDAO = daoFactory.getExternalDataDAO();
    List<ExternalDataPE> list = externalDataDAO.listExternalData(pickASample());

    assertEquals(1, list.size());
    ExternalDataPE dataSet = list.get(0);
    assertEquals("abcd", dataSet.getLocation());
    assertEquals(BooleanOrUnknown.U, dataSet.getComplete());
  }