}

        @ParameterizedTest(name = "should return false for invalid IP address or hostname: {0}")
        @ValueSource(strings = { "192.168.1", "hostname", "1.2.3.4.5", "192.168.1.1a", "a.b.c.d" })
        void shouldReturnFalseForInvalidIpAddressesOrHostnames(String input) {
            assertFalse(UniAddress.isDotQuadIP(input));
        }

        @Test

        assertTrue(output.contains(" 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F"));
        // Verify second line contains bytes 16-31
        assertTrue(output.contains(" 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F"));
    }

    @Test
    @DisplayName("Should handle control characters in hexdump")
    void testHexdumpControlCharacters() {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();

  private static final Integer N2 = 2;
  private static final Integer N3 = 3;
  private static final Integer N4 = 4;
  private static final String E11 = "1-1";
  private static final String E11_A = "1-1a";
  private static final String E12 = "1-2";
  private static final String E12_A = "1-2a";
  private static final String E12_B = "1-2b";
  private static final String E21 = "2-1";
  private static final String E13 = "1-3";