@Test
  public void testDocument2FlatValue() {
    Document doc = new DocumentImpl("id", "docName", 1024, new Date());

    DocumentData documentData = processor.toFlatValue(field, doc, context);

    assertNotNull("DocumentData cannot be null!", documentData);
    assertEquals("Names are not equal", doc.getName(), documentData.getFileName());
    assertEquals("Sizes are not equal", doc.getSize(), documentData.getSize());
    assertEquals("Link must be empty", "", documentData.getLink());
  }