byte[] buffer = new byte[100];

        int bytesRead = notifyInfo.decode(buffer, 0, 0);

        assertEquals(0, bytesRead);
    }

    @Test
    @DisplayName("Test decode with non-aligned next entry offset throws exception")
    void testDecodeNonAlignedNextOffset() {
        byte[] buffer = new byte[100];

        assertEquals(0x01, dst[0], "Data block type");
        assertEquals(3, dst[1] & 0xFF, "Data length low byte");
        assertEquals(0, dst[2] & 0xFF, "Data length high byte");
        assertEquals(2, dst[3], "First data byte");
        assertEquals(3, dst[4], "Second data byte");
        assertEquals(4, dst[5], "Third data byte");
    }

    /**
     * Test readParameterWordsWireFormat always returns 0
     */
    @Test

    private int readSize;
    private boolean async;
    private int treeId;
    private long mid, asyncId, sessionId;
    private byte errorContextCount;
    private byte[] errorData;

    private boolean retainPayload;
    private byte[] rawPayload;

    private ServerMessageBlock2 next;

    /**
     * Constructor for SMB2 message block with configuration.
     *
     * @param config the configuration object

  private static final long EXPECTED_THREE_BYTE_ROUNDTRIPPABLE_COUNT =
      // All one byte characters
      (long) Math.pow(EXPECTED_ONE_BYTE_ROUNDTRIPPABLE_COUNT, 3)
          +
          // One two byte character and a one byte character
          2 * TWO_BYTE_ROUNDTRIPPABLE_CHARACTERS * ONE_BYTE_ROUNDTRIPPABLE_CHARACTERS
          +
          // Three byte characters
          THREE_BYTE_ROUNDTRIPPABLE_CHARACTERS;

            // Test all known constants
            byte[] classes = { FileSystemInformation.SMB_INFO_ALLOCATION, FileSystemInformation.FS_SIZE_INFO,
                    FileSystemInformation.FS_FULL_SIZE_INFO, (byte) 0, (byte) 1, (byte) 127, (byte) -128 };

            for (byte fsClass : classes) {
                TestAllocInfo allocInfo = new TestAllocInfo(1024L, 512L, fsClass);

	r := NewReader([]byte(data))
	if got, want := r.Len(), 11; got != want {
		t.Errorf("r.Len(): got %d, want %d", got, want)
	}
	if n, err := r.Read(make([]byte, 10)); err != nil || n != 10 {
		t.Errorf("Read failed: read %d %v", n, err)
	}
	if got, want := r.Len(), 1; got != want {
		t.Errorf("r.Len(): got %d, want %d", got, want)
	}
	if n, err := r.Read(make([]byte, 1)); err != nil || n != 1 {

     * @param key
     *            7-byte "raw" DES key
     * @return 8-byte DES key with parity
     */
    static byte[] des7to8(final byte[] key) {
        final byte key8[] = new byte[8];
        key8[0] = (byte) (key[0] & 0xFE);
        key8[1] = (byte) (key[0] << 7 | (key[1] & 0xFF) >>> 1);
        key8[2] = (byte) (key[1] << 6 | (key[2] & 0xFF) >>> 2);
        key8[3] = (byte) (key[2] << 5 | (key[3] & 0xFF) >>> 3);

    }

    // Helper methods to write data to byte arrays for testing read methods
    private void writeInt2(int val, byte[] dst, int dstIndex) {
        dst[dstIndex] = (byte) val;
        dst[dstIndex + 1] = (byte) (val >> 8);
    }

    private void writeInt4(int val, byte[] dst, int dstIndex) {
        dst[dstIndex] = (byte) val;
        dst[dstIndex + 1] = (byte) (val >> 8);
        dst[dstIndex + 2] = (byte) (val >> 16);

        // Construct a minimal wire format buffer
        byte[] buf = new byte[32];
        int idx = 0;
        // Write values little-endian
        buf[idx++] = 5; // totalParameterCount low byte
        buf[idx++] = 0; // totalParameterCount high byte -> value 5
        buf[idx++] = 3; // totalDataCount low
        buf[idx++] = 0; // totalDataCount high
        idx += 2; // 2-byte reserved field (not 4 as the code shows)

        sdd.useUnicode = false;
        // format byte + path + null terminator
        byte[] expected = new byte[1 + dirName.length() + 1];
        expected[0] = 0x04; // buffer format
        System.arraycopy(dirName.getBytes(), 0, expected, 1, dirName.length());
        expected[dirName.length() + 1] = 0x00; // null terminator

        byte[] dst = new byte[100];
        int len = sdd.writeBytesWireFormat(dst, 0);