assertEquals("0001", Hexdump.toHexString(data1, 0, 4)); // 4 chars = 2 bytes
        assertEquals("000102", Hexdump.toHexString(data1, 0, 6)); // 6 chars = 3 bytes
        assertEquals("00010203", Hexdump.toHexString(data1, 0, 8)); // 8 chars = 4 bytes

        // Test with negative byte values
        byte[] data2 = { (byte) 0xFF, (byte) 0xFE, (byte) 0x80, 0x7F };

        // Then
        assertNotNull(result);
        assertFalse(result.isEmpty());
        // Should contain hex representation of first bytes
        assertTrue(result.startsWith("00010203"));
        assertEquals(64, result.length()); // 32 bytes * 2 chars per byte
    }

    @ParameterizedTest
    @ValueSource(ints = { 1, 16, 32, 64, 128, 256 })
    @DisplayName("Should handle various data sizes")

```

Running this race over home WiFi shows the Times (`0002`) completes just slightly sooner than the Post (`0001`):

```
0001 https://www.washingtonpost.com/
0001 0.000 callStart
0002 https://www.nytimes.com/
0002 0.000 callStart
0002 0.010 dnsStart
0001 0.013 dnsStart
0001 0.022 dnsEnd
0002 0.019 dnsEnd
0001 0.028 connectStart
0002 0.025 connectStart
0002 0.072 secureConnectStart
0001 0.075 secureConnectStart

  }

  public void testAsList_toArray_roundTrip() {
    double[] array = {0.0, 1.0, 2.0};
    List<Double> list = Doubles.asList(array);
    double[] newArray = Doubles.toArray(list);

    // Make sure it returned a copy
    list.set(0, 4.0);
    assertThat(newArray).isEqualTo(new double[] {0.0, 1.0, 2.0});
    newArray[1] = 5.0;
    assertThat((double) list.get(1)).isEqualTo(1.0);
  }

        assertEquals(0, new BigDecimal("0.0123").compareTo(BigDecimalConversionUtil.toBigDecimal(Double.valueOf(0.0123D))));
        assertEquals(0, new BigDecimal("0.00123").compareTo(BigDecimalConversionUtil.toBigDecimal(Double.valueOf(0.00123D))));
        assertEquals(0, new BigDecimal("0.000123").compareTo(BigDecimalConversionUtil.toBigDecimal(Double.valueOf(0.000123D))));

  }

  public void testAsList_toArray_roundTrip() {
    double[] array = {0.0, 1.0, 2.0};
    List<Double> list = Doubles.asList(array);
    double[] newArray = Doubles.toArray(list);

    // Make sure it returned a copy
    list.set(0, 4.0);
    assertThat(newArray).isEqualTo(new double[] {0.0, 1.0, 2.0});
    newArray[1] = 5.0;
    assertThat((double) list.get(1)).isEqualTo(1.0);
  }

  }

  public void testFlatMapToDouble_nullStream() {
    SpliteratorTester.ofDouble(
            () ->
                CollectSpliterators.flatMapToDouble(
                    Arrays.spliterator(new Double[] {1.0, 0.0, 1.0, 2.0, 3.0}),
                    (Double i) -> i == 0.0 ? null : DoubleStream.of(i).spliterator(),
                    Spliterator.SIZED | Spliterator.DISTINCT | Spliterator.NONNULL,
                    4))

/**
 * Unit tests for {@link SipHashFunction}.
 *
 * @author Kurt Alfred Kluever
 */
@NullUnmarked
public class SipHashFunctionTest extends TestCase {

  // From https://131002.net/siphash/siphash24.c
  // k = 00 01 02 ...
  private static final long K0 = 0x0706050403020100L;
  private static final long K1 = 0x0f0e0d0c0b0a0908L;
  private static final HashFunction SIP_WITH_KEY = Hashing.sipHash24(K0, K1);

    assertThat(cookie.matches("http://[::1]/".toHttpUrl())).isTrue()
  }

  @Test fun domainMatchesIpv6AddressWithCompression() {
    val cookie = parse("http://[0001:0000::]/".toHttpUrl(), "a=b; domain=0001:0000::")
    assertThat(cookie!!.domain).isEqualTo("1::")
    assertThat(cookie.matches("http://[1::]/".toHttpUrl())).isTrue()
  }

  @Test fun domainMatchesIpv6AddressWithIpv4Suffix() {

            102,
            Math.scalb(1.0, 53),
            Integer.MIN_VALUE,
            Integer.MAX_VALUE,
            Long.MIN_VALUE,
            Long.MAX_VALUE)) {
      for (double delta : Doubles.asList(0.0, 1.0, 2.0)) {
        integralBuilder.addAll(Doubles.asList(d + delta, d - delta, -d - delta, -d + delta));
      }
      for (double delta : Doubles.asList(0.01, 0.1, 0.25, 0.499, 0.5, 0.501, 0.7, 0.8)) {