@Test(expected = FrameStructureException.class)
  public void testParseOBOFile() throws Exception {
    OBODoc obodoc = parseOBOFile("single_intersection_of_tag_test.obo");
    if (useSystemOut) {
      System.out.println("F:" + obodoc);
    }
    assertTrue(obodoc.getTermFrames().size() == 2);
    Frame frame = obodoc.getTermFrames().iterator().next();
    assertNotNull(frame);

    renderOboToString(obodoc); // throws FrameStructureException
  }