}

    @Test
    @DisplayName("initSecContext with null buffer and non-zero len throws NPE")
    void testInitSecContextNullBufferNonZeroLen() throws Exception {
        SpnegoContext ctx = newContext();
        // A null buffer with non-zero len leads to NPE while slicing input
        assertThrows(NullPointerException.class, () -> ctx.initSecContext(null, 0, 1));

                "readRDataWireFormat should return 6 even if address is zero");

        NbtAddress[] addrEntry = (NbtAddress[]) addrEntryField.get(nameQueryResponse);
        assertNull(addrEntry[0], "NbtAddress should be null when address is zero");
    }

    @Test

        assertEquals(0, result);

        // Test with different parameters
        result = response.readSetupWireFormat(buffer, 10, 50);
        assertEquals(0, result);

        // Test with zero length
        result = response.readSetupWireFormat(buffer, 0, 0);
        assertEquals(0, result);
    }

    @Test
    @DisplayName("Test readParametersWireFormat returns 0")

        // Then
        assertEquals(8, result);
        assertEquals(0xffffL, instance.getCount());
    }

    /**
     * Test of readParameterWordsWireFormat with zero count
     */
    @Test
    public void testReadParameterWordsWireFormatZeroCount() {
        // Given
        byte[] buffer = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 };

            out.close();
        }

        // Set maxSize smaller than file size (should throw exception)
        FileUtil.readBytes(file, 512);
    }

    /**
     * Test readBytes with custom maxSize of zero
     *
     * @throws Exception
     */
    @Test(expected = IORuntimeException.class)
    public void testReadBytes_CustomMaxSize_Zero() throws Exception {
        final File file = tempFolder.newFile("any.txt");

            synchronized (this) {
                log.debug("Usage dropped to zero, release session");
                if (this.sessionAcquired.compareAndSet(true, false)) {
                    this.session.release();
                }
            }
        } else if (usage < 0) {
            log.error("Usage count dropped below zero " + this);
            dumpResource();

        return this.pointer;
    }

    /**
     * Validates the provided string against this structure's metadata.
     * Checks that the string length matches the expected length and that
     * null strings have a zero pointer.
     *
     * @param string the string to validate
     * @return the validated string
     * @throws PACDecodingException if validation fails
     */

        assertEquals(fileName, decodedName);

        // Verify bytes written
        assertEquals(20 + nameLength, bytesWritten);
    }

    @Test
    @DisplayName("Test encode with non-zero destination index")
    void testEncodeWithNonZeroDestIndex() {
        String fileName = "test.txt";
        FileRenameInformation2 info = new FileRenameInformation2(fileName, true);

    static final byte SMB_COM_NT_CREATE_ANDX = (byte) 0xA2;

    /*
     * Some fields specify the offset from the beginning of the header. This
     * field should be used for calculating that. This would likely be zero
     * but an implemantation that encorporates the transport header(for
     * efficiency) might use a different initial bufferIndex. For example,
     * to eliminate copying data when writing NbtSession data one might

        SmbComLogoffAndX msg = new SmbComLogoffAndX(null);
        assertEquals(0, msg.writeParameterWordsWireFormat(new byte[10], index), "Expected zero returned regardless of index");
        assertEquals(0, msg.writeParameterWordsWireFormat(null, index), "Expected zero even when dst array is null");
    }

    @ParameterizedTest
    @ValueSource(ints = { 0, 3, 9, -5 })
    @DisplayName("writeBytesWireFormat always returns 0")