// Same inputs but different output should have different hash code
        assertNotSame(item1.hashCode(), item4.hashCode());
    }

    @Test
    public void test_hashCode_withNullOutput() {
        // Test hashCode with null output - should not throw, returns consistent hash for null
        String[] inputs1 = { "a", "b" };
        String[] inputs2 = { "a", "b" };

Shinsuke Sugaya <******@****.***> 1773442886 +0900

Shinsuke Sugaya <******@****.***> 1773442886 +0900