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

        String inputsValue = item.getInputsValue();
        assertEquals("a\nb\nc", inputsValue);
    }

    public void test_getInputsValue_withSingleInput() {
        // Test with single input
        String[] inputs = { "single" };
        CharMappingItem item = new CharMappingItem(1L, inputs, "output");