assertArrayEquals(plaintext, decrypted1);
        assertArrayEquals(plaintext, decrypted2);

        // Clean up
        Arrays.fill(plaintext, '\0');
        Arrays.fill(decrypted1, '\0');
        Arrays.fill(decrypted2, '\0');
    }

    @Test
    public void testBase64StringOperations() throws Exception {
        char[] plaintext = "TestPassword456".toCharArray();

        request.setCloseFlags(0x0001);

        // Change file ID
        byte[] newFileId1 = new byte[16];
        Arrays.fill(newFileId1, (byte) 0xAA);
        request.setFileId(newFileId1);

        // Change flags
        request.setCloseFlags(0x0000);

        // Change file ID again
        byte[] newFileId2 = new byte[16];
        Arrays.fill(newFileId2, (byte) 0xBB);
        request.setFileId(newFileId2);

            Security.addProvider(new BouncyCastleProvider());
        }
    }

    @BeforeEach
    void setup() {
        sessionKey = new byte[16];
        Arrays.fill(sessionKey, (byte) 0xAA);

        preauthIntegrityHash = new byte[64];
        Arrays.fill(preauthIntegrityHash, (byte) 0xBB);
    }

    @Nested
    @DisplayName("Constructor Tests")
    class ConstructorTests {

        @Test

        }

        @Test
        @DisplayName("Should skip reserved bytes without modification")
        void testEncodeReservedBytes() {
            // Given
            Arrays.fill(buffer, (byte) 0xFF); // Fill with non-zero
            SrvCopychunkCopy copy = new SrvCopychunkCopy(sourceKey);

            // When
            copy.encode(buffer, startIndex);

            // Then

    void testDecodeValidResumeKey() throws SMBProtocolDecodingException {
        // Prepare test data - 24 bytes for resume key + 4 bytes for context length
        byte[] buffer = new byte[28];

        // Fill resume key with test pattern
        for (int i = 0; i < 24; i++) {
            buffer[i] = (byte) (i + 1);
        }

        // Add context length (reserved) - 4 bytes
        buffer[24] = 0x00;

            int offset = 10;
            byte[] buffer = new byte[64];
            byte[] fileId = createTestData(16);
            byte oplockLevel = 0x02;

            // Fill some random data before offset
            Arrays.fill(buffer, 0, offset, (byte) 0xAB);

            // Write valid data at offset
            SMBUtil.writeInt2(24, buffer, offset);
            buffer[offset + 2] = oplockLevel;

        }

        @Test
        @DisplayName("Should update file ID multiple times")
        void testMultipleFileIdUpdates() {
            byte[] firstFileId = new byte[16];
            Arrays.fill(firstFileId, (byte) 0xAA);
            byte[] secondFileId = new byte[16];
            Arrays.fill(secondFileId, (byte) 0xBB);

            request.setFileId(firstFileId);

    }

    @Test
    @DisplayName("Should handle empty file ID")
    void testSetEmptyFileId() {
        // Given
        RequestWithFileId request = new Smb2CloseRequest(mockConfig, testFileId);

        // When
        request.setFileId(emptyFileId);

        // Then - should accept empty file ID

        assertNotNull(passwordArray);
        assertArrayEquals(testPassword.toCharArray(), passwordArray);

        // Verify that returned array is a copy
        Arrays.fill(passwordArray, 'X');
        assertEquals(testPassword, auth.getPassword());
    }

    /**
     * Test secure password wiping
     */
    @Test
    public void testSecureWipePassword() {

            request.writeBytesWireFormat(smallBuffer, 0);
        });
    }

    @Test
    @DisplayName("Test file ID boundary values")
    void testFileIdBoundaryValues() {
        // Test with file ID having maximum byte values
        byte[] maxFileId = new byte[16];
        Arrays.fill(maxFileId, (byte) 0xFF);
        Smb2FlushRequest maxRequest = new Smb2FlushRequest(mockConfig, maxFileId);