item.setNewInput("");
        assertTrue(item.isUpdated());

        item.setNewInput(null);
        assertFalse(item.isUpdated());
    }

    @Test
    public void test_isDeleted() {
        // Test isDeleted method
        ProtwordsItem item = new ProtwordsItem(1, "word");
        assertFalse(item.isDeleted());

        item.setNewInput("newword");
        assertFalse(item.isDeleted());

        item.setNewInput("");
        assertTrue(item.isUpdated());

        item.setNewInput(null);
        assertFalse(item.isUpdated());
    }

    @Test
    public void test_isDeleted() {
        // Test isDeleted method
        StopwordsItem item = new StopwordsItem(1, "word");
        assertFalse(item.isDeleted());

        item.setNewInput("new");
        assertFalse(item.isDeleted());

        assertTrue(item.isUpdated());

        // Set newInputs to null - not updated
        item.setNewInputs(null);
        assertFalse(item.isUpdated());
    }

    @Test
    public void test_isDeleted() {
        String[] inputs = { "input" };
        CharMappingItem item = new CharMappingItem(1L, inputs, "output");

        // Initially not deleted
        assertFalse(item.isDeleted());