}

  public void testAutoIncrementStep_seconds() {
    FakeTicker ticker = new FakeTicker().setAutoIncrementStep(3, SECONDS);
    assertEquals(0, ticker.read());
    assertEquals(3000000000L, ticker.read());
    assertEquals(6000000000L, ticker.read());
  }

  @GwtIncompatible // java.time.Duration
  @IgnoreJRERequirement // TODO: b/288085449 - Remove this once we use library-desugaring scents.

    stopwatch.start();
    ticker.advance(5000000000L);
    assertThat(stopwatch.toString()).isEqualTo("5.000 s");
    stopwatch.reset();
    stopwatch.start();
    ticker.advance((long) (1.5 * 60 * 1000000000L));
    assertThat(stopwatch.toString()).isEqualTo("1.500 min");
    stopwatch.reset();
    stopwatch.start();
    ticker.advance((long) (2.5 * 60 * 60 * 1000000000L));

		"\x020000000000000000000" +
		"00000\v\x00\x00\x00\x00\x00000000000" +
		"00000000000000PK\x01\x0200" +
		"00000000000000000000" +
		"00\v\x00\x00\x00\x00\x00000000000000" +
		"00000000000PK\x01\x020000<" +
		"0\x00\x0000000000000000\v\x00\v" +
		"\x00\x00\x00\x00\x0000000000\x00\x00\x00\x00000" +
		"00000000PK\x01\x0200000000" +
		"0000000000000000\v\x00\x00\x00" +

    assertThat(frameLog(true, 0, 15, TYPE_SETTINGS, FLAG_NONE))
      .isEqualTo("<< 0x00000000    15 SETTINGS      ")
    assertThat(frameLog(false, 0, 0, TYPE_SETTINGS, FLAG_ACK))
      .isEqualTo(">> 0x00000000     0 SETTINGS      ACK")
    assertThat(frameLog(true, 0, 0, TYPE_SETTINGS, FLAG_ACK))
      .isEqualTo("<< 0x00000000     0 SETTINGS      ACK")
    assertThat(frameLog(true, 3, 22, TYPE_HEADERS, FLAG_END_HEADERS))

    result = 31 * result + length.toInt()
    return result
  }

  override fun toString(): String = "$tagClass/$tag"

  companion object {
    const val TAG_CLASS_UNIVERSAL = 0b0000_0000
    const val TAG_CLASS_APPLICATION = 0b0100_0000
    const val TAG_CLASS_CONTEXT_SPECIFIC = 0b1000_0000
    const val TAG_CLASS_PRIVATE = 0b1100_0000

    const val TAG_END_OF_CONTENTS = 0L
  }

        assertTrue(IpAddressUtil.isIPv6Address("2001:db8::1"));
        assertTrue(IpAddressUtil.isIPv6Address("fe80::1"));
        assertTrue(IpAddressUtil.isIPv6Address("2001:0db8:0000:0000:0000:ff00:0042:8329"));

        // IPv4 addresses
        assertFalse(IpAddressUtil.isIPv6Address("127.0.0.1"));
        assertFalse(IpAddressUtil.isIPv6Address("192.168.1.1"));

  }

  public void testAutoIncrementStep_seconds() {
    FakeTicker ticker = new FakeTicker().setAutoIncrementStep(3, SECONDS);
    assertEquals(0, ticker.read());
    assertEquals(3000000000L, ticker.read());
    assertEquals(6000000000L, ticker.read());
  }

  @GwtIncompatible // java.time.Duration
  public void testAutoIncrementStep_duration() {
    FakeTicker ticker = new FakeTicker().setAutoIncrementStep(Duration.ofMillis(1));

    assertEquals(1459320713, smear(754102528));
    assertEquals(-160560296, smear(1234567890));
    assertEquals(-1017931171, smear(1));
    assertEquals(-1350072884, smear(-2000000000));
    assertEquals(-809843551, smear(2000000000));
    assertEquals(-309370926, smear(-1155484576));
    assertEquals(-1645495900, smear(-723955400));
    assertEquals(766424523, smear(1033096058));
    assertEquals(-757003149, smear(-1690734402));

  static final long[] powersOf10 = {
    1L,
    10L,
    100L,
    1000L,
    10000L,
    100000L,
    1000000L,
    10000000L,
    100000000L,
    1000000000L,
    10000000000L,
    100000000000L,
    1000000000000L,
    10000000000000L,
    100000000000000L,
    1000000000000000L,
    10000000000000000L,
    100000000000000000L,
    1000000000000000000L
  };

        assertEquals("0/500 MB", format.formatProgress(0L, 500000000L));
        assertEquals("1.0/5.0 GB", format.formatProgress(1000000000L, 5000000000L));
        assertEquals("5.0 GB", format.formatProgress(5000000000L, 5000000000L));
        assertEquals("5.0/15 GB", format.formatProgress(5000000000L, 15000000000L));
        assertEquals("15 GB", format.formatProgress(15000000000L, 15000000000L));
    }