assertNotNull(hostAddress, "Host address should not be null");
    }

    @Test
    @DisplayName("toInetAddress should return valid InetAddress")
    void testToInetAddressContract() throws UnknownHostException {
        // Given
        InetAddress expectedInetAddress = InetAddress.getByName("127.0.0.1");
        when(mockAddress.toInetAddress()).thenReturn(expectedInetAddress);