assertNull(item.getNewOutput());

        // Set new output
        item.setNewOutput("newOutput");
        assertEquals("newOutput", item.getNewOutput());
    }

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

        // Test newline replacement in setNewOutput