var ErrInvalidChecksum = errors.New("invalid checksum")

// SetExpectedMin set expected minimum data expected from reader
func (r *Reader) SetExpectedMin(expectedMin int64) {
	r.expectedMin = expectedMin
}

// SetExpectedMax set expected max data expected from reader
func (r *Reader) SetExpectedMax(expectedMax int64) {
	r.expectedMax = expectedMax
}

  // Depends on the correctness of BigIntegerMath.factorial.
  public void testFactorial() {
    for (int n = 0; n <= 50; n++) {
      BigInteger expectedBig = BigIntegerMath.factorial(n);
      int expectedInt = fitsInInt(expectedBig) ? expectedBig.intValue() : Integer.MAX_VALUE;
      assertEquals(expectedInt, IntMath.factorial(n));
    }
  }

  public void testFactorialNegative() {
    for (int n : NEGATIVE_INTEGER_CANDIDATES) {

  // Depends on the correctness of BigIntegerMath.factorial.
  public void testFactorial() {
    for (int n = 0; n <= 50; n++) {
      BigInteger expectedBig = BigIntegerMath.factorial(n);
      int expectedInt = fitsInInt(expectedBig) ? expectedBig.intValue() : Integer.MAX_VALUE;
      assertEquals(expectedInt, IntMath.factorial(n));
    }
  }

  public void testFactorialNegative() {
    for (int n : NEGATIVE_INTEGER_CANDIDATES) {

    void testSetAndGetMid() {
        // Given
        long expectedMid = 12345L;
        doNothing().when(messageBlock).setMid(expectedMid);
        when(messageBlock.getMid()).thenReturn(expectedMid);

        // When
        messageBlock.setMid(expectedMid);
        long actualMid = messageBlock.getMid();

        // Then
        assertEquals(expectedMid, actualMid);
        verify(messageBlock).setMid(expectedMid);

    HashCode hashCode = HashCode.fromBytes(bytes);
    int expectedInt = 0x0000abcd;
    String expectedToString = "cdab0000";

    assertEquals(expectedInt, hashCode.asInt());
    assertThat(hashCode.toString()).isEqualTo(expectedToString);

    bytes[0] = (byte) 0x00;

    assertEquals(expectedInt, hashCode.asInt());
    assertThat(hashCode.toString()).isEqualTo(expectedToString);
  }

        Trans2FindNext2 next = new Trans2FindNext2(sid, resumeKey, name);

        int expectedLen = 2 + 2 + 2 + 4 + 2 + name.length() + 1;
        byte[] dst = new byte[expectedLen];

        // When
        int len = next.writeParametersWireFormat(dst, 0);

        // Then
        assertEquals(expectedLen, len, "Unexpected parameters length");

        // sid (2 bytes, LE)
        assertEquals((byte) 0x34, dst[0]);

    void testReadParameterWords(int expectedInt, byte[] bytes) {
        // The implementation reads via SMBUtil.readInt4 which returns an int
        // When assigned to a long field, it gets sign-extended
        int readLen = response.readParameterWordsWireFormat(bytes, 0);
        long expectedOffset = expectedInt; // Sign extension happens here for negative values

    HashCode hashCode = HashCode.fromBytes(bytes);
    int expectedInt = 0x0000abcd;
    String expectedToString = "cdab0000";

    assertEquals(expectedInt, hashCode.asInt());
    assertThat(hashCode.toString()).isEqualTo(expectedToString);

    bytes[0] = (byte) 0x00;

    assertEquals(expectedInt, hashCode.asInt());
    assertThat(hashCode.toString()).isEqualTo(expectedToString);
  }

  // Depends on the correctness of BigIntegerMath.factorial.
  @GwtIncompatible // TODO
  public void testFactorial() {
    for (int n = 0; n <= 50; n++) {
      BigInteger expectedBig = BigIntegerMath.factorial(n);
      long expectedLong = fitsInLong(expectedBig) ? expectedBig.longValue() : Long.MAX_VALUE;
      assertEquals(expectedLong, LongMath.factorial(n));
    }
  }

  @GwtIncompatible // TODO