@Test
  public void testFindByTitle() throws Exception {
    IPictogram pictogram = new Pictogram();
    pictogram.setTitle("testFindByTitle");
    pictogram.setFileIdentifier("test.txt");

    repository.save(pictogram);

    IPictogram testPictogram = repository.findByTitle(pictogram.getTitle());

    assertEquals(pictogram.getId(), testPictogram.getId());

    // return null for non-existing entities
    testPictogram = repository.findByTitle("NON-EXIST");

    assertEquals(null, testPictogram);
  }
  @Test
  public void testConvertToEntity() throws Exception {
    ODocument document =
        new ODocument("Pictogram")
            .field("title", "title")
            .field("titleasc", "title")
            .field("fileIdentifier", "test.txt")
            .field("created", 1L)
            .field("modified", 2L);
    // persist to database to create id
    document.save();

    IPictogram pictogram = repository.convertToEntity(document);

    assertEquals("title", pictogram.getTitle());
    assertEquals("test.txt", pictogram.getFileIdentifier());
    assertEquals(new Long(1L), pictogram.getCreated());
    assertEquals(new Long(2L), pictogram.getModified());
    assertEquals(document.getIdentity().toString(), pictogram.getId());
  }