public void test_getNewInput() {
        // Test getNewInput method
        ProtwordsItem item = new ProtwordsItem(1, "word");
        assertNull(item.getNewInput());

        item.setNewInput("newword");
        assertEquals("newword", item.getNewInput());
    }

    @Test
    public void test_setNewInput() {
        // Test setNewInput method
        ProtwordsItem item = new ProtwordsItem(1, "word");

    public void test_createMode() {
        // Test special behavior when id is 0 (create mode)
        StopwordsItem createItem = new StopwordsItem(0, "newword");
        assertTrue(createItem.isUpdated());
        assertEquals("newword", createItem.getNewInput());
        assertEquals("newword", createItem.toLineString());

        // Non-zero id should not auto-set newInput