void testConstructor() throws Exception {
        // Verify command is set correctly (SMB2_FLUSH = 0x0007)
        Field commandField = ServerMessageBlock2.class.getDeclaredField("command");
        commandField.setAccessible(true);
        int command = (int) commandField.get(request);
        assertEquals(0x0007, command); // SMB2_FLUSH value

        // Verify file ID is set

        }

        writeInt2(subCommand & 0xFF, dst, dstIndex);
        dstIndex += 2;
        System.arraycopy(descr, 0, dst, dstIndex, descr.length);
        dstIndex += descr.length;
        writeInt2(0x0001, dst, dstIndex);
        dstIndex += 2;
        writeInt2(maxDataCount, dst, dstIndex);
        dstIndex += 2;
        writeInt4(serverTypes, dst, dstIndex);
        dstIndex += 4;

      assertThat(expected)
          .hasMessageThat()
          .isEqualTo("Unpaired surrogate at index " + invalidCodePointIndex);
    }
  }

  // 128 - [chars 0x0000 to 0x007f]
  private static final long ONE_BYTE_ROUNDTRIPPABLE_CHARACTERS = 0x007f - 0x0000 + 1;

  // 128
  private static final long EXPECTED_ONE_BYTE_ROUNDTRIPPABLE_COUNT =
      ONE_BYTE_ROUNDTRIPPABLE_CHARACTERS;

  // 1920 [chars 0x0080 to 0x07FF]

                }

                serverChallenge = msg2.getChallenge();
                ntlmsspFlags &= msg2.getFlags();

                //                  netbiosName = getNtlmsspListItem(token, 0x0001);

                final Type3Message msg3 =
                        new Type3Message(msg2, auth.getPassword(), auth.getDomain(), auth.getUsername(), workstation, ntlmsspFlags);
                token = msg3.toByteArray();

        SMBUtil.writeInt2(getSubCommand() & 0xFF, dst, dstIndex);
        dstIndex += 2;
        System.arraycopy(descr, 0, dst, dstIndex, descr.length);
        dstIndex += descr.length;
        SMBUtil.writeInt2(0x0001, dst, dstIndex);
        dstIndex += 2;
        SMBUtil.writeInt2(this.maxDataCount, dst, dstIndex);
        dstIndex += 2;
        SMBUtil.writeInt4(this.serverTypes, dst, dstIndex);
        dstIndex += 4;

        assertEquals((byte) 0x08, SmbComTransaction.TRANS2_SET_FILE_INFORMATION);

        // Test NET subcommands
        assertEquals(0x0000, SmbComTransaction.NET_SHARE_ENUM);
        assertEquals(0x0068, SmbComTransaction.NET_SERVER_ENUM2);
        assertEquals(0x00D7, SmbComTransaction.NET_SERVER_ENUM3);

        // Test TRANS subcommands

        assertTrue((flags0 & 0x10) != 0, "flag should be set after addFlags0");
        // Calling again should combine rather than overwrite
        req.addFlags0(0x20);
        flags0 = (int) getPrivateField(req, "flags0");
        assertTrue((flags0 & 0x20) != 0, "flag should accumulate");
    }

    @Test
    @DisplayName("initResponse prepares a response instance")
    void initResponseCreatesResponse() {

            getResultMessageMethod.setAccessible(true);

            assertEquals("0x0004", getResultMessageMethod.invoke(null, 4), "Should return hex format for unknown code 4");
            assertEquals("0x00FF", getResultMessageMethod.invoke(null, 255), "Should return hex format for unknown code 255");
            assertEquals("0x1000", getResultMessageMethod.invoke(null, 4096), "Should return hex format for large unknown code");
        }

            buffer[16 + i] = expectedData[i];
        }

        // Set header values
        SMBUtil.writeInt4(0x100, buffer, 0);
        SMBUtil.writeInt4(0x200, buffer, 4);
        SMBUtil.writeInt4(0x300, buffer, 8);
        SMBUtil.writeInt4(0x400, buffer, 12);

        // Decode
        response.decode(buffer, 0, 32);

        // Verify data integrity

            }
        } else {
            createDisposition = FILE_OPEN;
        }

        if ((createOptions & 0x0001) == 0) {
            this.createOptions = createOptions | 0x0040;
        } else {
            this.createOptions = createOptions;
        }
        impersonationLevel = 0x02; // As seen on NT :~)
        securityFlags = (byte) 0x03; // SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY
    }