int approxSize = IntMath.divide(n * IntMath.log2(n, CEILING), Long.SIZE, CEILING);
    ArrayList<BigInteger> bignums = new ArrayList<>(approxSize);

    // Start from the pre-computed maximum long factorial.
    int startingNumber = LongMath.factorials.length;
    long product = LongMath.factorials[startingNumber - 1];
    // Strip off 2s from this value.
    int shift = Long.numberOfTrailingZeros(product);
    product >>= shift;

        void testSetFileTimes() throws CIFSException {
            // Given
            long currentTime = System.currentTimeMillis();
            long createTime = currentTime - 2000;
            long lastModified = currentTime - 1000;
            long lastAccess = currentTime;

            // When/Then

        .isNull();
    assertWithMessage("Max long").that(Ints.tryParse(Long.toString(Long.MAX_VALUE))).isNull();
    assertWithMessage("Min long").that(Ints.tryParse(Long.toString(Long.MIN_VALUE))).isNull();
    assertThat(Ints.tryParse("\u0662\u06f3")).isNull();
  }

  /**
   * Applies {@link Ints#tryParse(String)} to the given string and asserts that the result is as
   * expected.

        "type": "keyword"
      },
      "expiredTime": {
        "type": "long"
      },
      "createdBy": {
        "type": "keyword"
      },
      "createdTime": {
        "type": "long"
      },
      "updatedBy": {
        "type": "keyword"
      },
      "updatedTime": {
        "type": "long"
      }
    }

    assertThat(Adapters.INTEGER_AS_LONG.fromDer(bytes)).isEqualTo(-256L)
  }

  @Test fun `max long`() {
    val bytes = "02087fffffffffffffff".decodeHex()
    assertThat(Adapters.INTEGER_AS_LONG.fromDer(bytes)).isEqualTo(Long.MAX_VALUE)
    assertThat(Adapters.INTEGER_AS_LONG.toDer(Long.MAX_VALUE)).isEqualTo(bytes)
  }

  @Test fun `min long`() {
    val bytes = "02088000000000000000".decodeHex()

        byte[] buffer = new byte[8];
        long value = 0x123456789ABCDEF0L;
        ServerMessageBlock.writeInt8(value, buffer, 0);
        assertEquals(value, ServerMessageBlock.readInt8(buffer, 0));
    }

    @Test
    void testTimeReadWrite() {
        byte[] buffer = new byte[8];
        long time = System.currentTimeMillis();
        ServerMessageBlock.writeTime(time, buffer, 0);

public class FakeTicker extends Ticker {

  private final AtomicLong nanos = new AtomicLong();
  private volatile long autoIncrementStepNanos;

  /** Advances the ticker value by {@code time} in {@code timeUnit}. */
  @SuppressWarnings("GoodTime") // should accept a java.time.Duration
  @CanIgnoreReturnValue
  public FakeTicker advance(long time, TimeUnit timeUnit) {
    return advance(timeUnit.toNanos(time));
  }

        long maxTime = System.currentTimeMillis() + 1000000000000L;
        SMBUtil.writeTime(maxTime, buffer, 8); // creationTime
        SMBUtil.writeTime(maxTime, buffer, 16); // lastAccessTime
        SMBUtil.writeTime(maxTime, buffer, 24); // lastWriteTime
        SMBUtil.writeTime(maxTime, buffer, 32); // changeTime
        SMBUtil.writeInt8(Long.MAX_VALUE, buffer, 40); // endOfFile

      "sortOrder": {
        "type": "integer"
      },
      "createdBy": {
        "type": "keyword"
      },
      "createdTime": {
        "type": "long"
      },
      "updatedBy": {
        "type": "keyword"
      },
      "updatedTime": {
        "type": "long"
      },
      "description" : {
        "type": "text",
        "analyzer": "standard_analyzer"
      }
    }

    protected File workingDirectory = null;

    /** Maximum number of output lines to capture. */
    protected int maxOutputLine = 1000;

    /** Command execution timeout in milliseconds. */
    protected long executionTimeout = 30L * 1000L; // 30sec

    /** Character encoding for command output. */
    protected String commandOutputEncoding = Charset.defaultCharset().displayName();