assertThat(UnsignedLongs.divide(0xfffffffffffffffeL, 0xfffffffffffffffdL)).isEqualTo(1);
    assertThat(UnsignedLongs.divide(0xfffffffffffffffdL, 0xfffffffffffffffeL)).isEqualTo(0);
    assertThat(UnsignedLongs.divide(0xfffffffffffffffeL, 65535)).isEqualTo(281479271743488L);
    assertThat(UnsignedLongs.divide(0xfffffffffffffffeL, 2)).isEqualTo(0x7fffffffffffffffL);

        }

        @Test
        @DisplayName("Unspecified SessionId should be 0xFFFFFFFFFFFFFFFF")
        void testUnspecifiedSessionId() {
            assertEquals(0xFFFFFFFFFFFFFFFFL, Smb2Constants.UNSPECIFIED_SESSIONID, "Unspecified SessionId must be 0xFFFFFFFFFFFFFFFF");
            assertEquals(-1L, Smb2Constants.UNSPECIFIED_SESSIONID, "Unspecified SessionId as signed long should be -1");
        }

    assertThat(UnsignedLongs.divide(0xfffffffffffffffeL, 0xfffffffffffffffdL)).isEqualTo(1);
    assertThat(UnsignedLongs.divide(0xfffffffffffffffdL, 0xfffffffffffffffeL)).isEqualTo(0);
    assertThat(UnsignedLongs.divide(0xfffffffffffffffeL, 65535)).isEqualTo(281479271743488L);
    assertThat(UnsignedLongs.divide(0xfffffffffffffffeL, 2)).isEqualTo(0x7fffffffffffffffL);

   * unless the user is actually calling a parse method.
   */
  private static final class ParseOverflowDetection {
    private ParseOverflowDetection() {}

    // calculated as 0xffffffffffffffff / radix
    static final long[] maxValueDivs = new long[Character.MAX_RADIX + 1];
    static final int[] maxValueMods = new int[Character.MAX_RADIX + 1];

        byte[] src = new byte[] {
                // 0x123456789ABCDEF0L
                (byte) 0xF0, (byte) 0xDE, (byte) 0xBC, (byte) 0x9A, (byte) 0x78, (byte) 0x56, (byte) 0x34, (byte) 0x12,
                // 0xFFFFFFFFFFFFFFFFL
                (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
                // 0x0000000000000000L

     */
    public static final int UNSPECIFIED_TREEID = 0xFFFFFFFF;

    /**
     * Unspecified session ID value
     */
    public static final long UNSPECIFIED_SESSIONID = 0xFFFFFFFFFFFFFFFFL;

    /**
     * SMB2 Channel constant for RDMA V1
     * Used in SMB2 READ and WRITE requests to indicate RDMA channel
     */
    public static final int SMB2_CHANNEL_RDMA_V1 = 0x00000001;

    /**

		want    uint64
		wantErr string
	}
	tests := []testCase{
		{"x", 0, "invalid byte in chunk length"},
		{"0000000000000000", 0, ""},
		{"0000000000000001", 1, ""},
		{"ffffffffffffffff", 1<<64 - 1, ""},
		{"FFFFFFFFFFFFFFFF", 1<<64 - 1, ""},
		{"000000000000bogus", 0, "invalid byte in chunk length"},
		{"00000000000000000", 0, "http chunk length too large"}, // could accept if we wanted

  @Param("1234")
  int randomSeed;

  int[] xInts;
  int[] yInts;

  long[] xLongs;
  long[] yLongs;

  int[] constant;

  private static final long NONNEGATIVE_LONG_MASK = 0x7FFFFFFFFFFFFFFFL;

  @BeforeExperiment
  void setUp() {
    Random random = new Random(randomSeed);
    xInts = new int[SAMPLE_SIZE];
    yInts = new int[SAMPLE_SIZE];
    xLongs = new long[SAMPLE_SIZE];

  @Param("1234")
  int randomSeed;

  int[] xInts;
  int[] yInts;

  long[] xLongs;
  long[] yLongs;

  int[] constant;

  private static final long NONNEGATIVE_LONG_MASK = 0x7FFFFFFFFFFFFFFFL;

  @BeforeExperiment
  void setUp() {
    Random random = new Random(randomSeed);
    xInts = new int[SAMPLE_SIZE];
    yInts = new int[SAMPLE_SIZE];
    xLongs = new long[SAMPLE_SIZE];

  }

  // Test for common pitfall regarding sign extension.
  // For example: (long) data[i++] | (long) data[i++] << 8 | ...
  // If data[i] == (byte) 0x80, the first cast will sign-extend it to 0xffffffffffffff80,
  // masking the remaining seven bytes.
  // To test this, we give an input where bit 7 is not cleared. For example:
  // (1) 00 01 02 03 04 05 06 07 80
  // (2) 00 01 02 03 04 05 06 07 81