item.setNewInput(null);
        assertEquals("originalword", item.toLineString());
    }

    @Test
    public void test_getId() {
        // Test getId method inherited from DictionaryItem
        ProtwordsItem item1 = new ProtwordsItem(0, "word");
        assertEquals(0, item1.getId());

        ProtwordsItem item2 = new ProtwordsItem(999, "word");
        assertEquals(999, item2.getId());

 * CRUD operations and pagination support.
 *
 * @param <T> the type of dictionary items managed by this file
 */
public abstract class DictionaryFile<T extends DictionaryItem> {
    /** The dictionary manager responsible for this file. */
    protected DictionaryManager dictionaryManager;

    /** The unique identifier for this dictionary file. */
    protected String id;

        assertEquals(42L, item.getId());
    }

    @Test
    public void test_getCreatedBy_getCreatedTime() {
        // Test inherited methods from DictionaryItem
        CharMappingItem item = new CharMappingItem(1L, new String[] { "input" }, "output");

        // Test basic properties that exist
        assertNotNull(item.getInputs());