CharMappingItem item = new CharMappingItem(1L, inputs, "output");

        item.setNewOutput(null);
        assertNull(item.getNewOutput());
    }

    @Test
    public void test_getInputsValue() {
        // Test with multiple inputs
        String[] inputs = { "a", "b", "c" };
        CharMappingItem item = new CharMappingItem(1L, inputs, "output");

        String inputsValue = item.getInputsValue();