@Test
  public void testInitialState() {
    assertNotNull(frag.getSequence());
    assertNotNull(frag.getQuality());

    assertNull(frag.getInstrument());
    assertNull(frag.getRunNumber());
    assertNull(frag.getFlowcellId());
    assertNull(frag.getLane());
    assertNull(frag.getTile());
    assertNull(frag.getXpos());
    assertNull(frag.getYpos());
    assertNull(frag.getRead());
    assertNull(frag.getFilterPassed());
    assertNull(frag.getControlNumber());
    assertNull(frag.getIndexSequence());

    assertNotNull(frag.toString());
  }