String[] inputs2 = item.getNewInputs();
        assertEquals("p", inputs2[0]);
        assertEquals("q", inputs2[1]);
        assertEquals("r", inputs2[2]);
    }

    @Test
    public void test_defensiveCopy_nullArrays() {
        // Test that defensive copy handles null arrays correctly
        CharMappingItem item1 = new CharMappingItem(1L, new String[] { "a" }, "output");

        // Set to null