assertEquals("", item.toLineString());

        item.setNewInput("word");
        assertEquals("word", item.toLineString());
    }

    public void test_toLineString_withNullNewInput() {
        // Test toLineString when newInput is set back to null
        ProtwordsItem item = new ProtwordsItem(1, "originalword");
        item.setNewInput("tempword");