assertEquals("a", item.getInputs()[0]);
        assertEquals("m", item.getInputs()[1]);
        assertEquals("z", item.getInputs()[2]);
    }

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

        // Initially null for non-zero id
        assertNull(item.getNewInputs());