import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.nio.charset.Charset;

/**
 * A destination to which bytes can be written, such as a file. Unlike an {@link OutputStream}, a
 * {@code ByteSink} is not an open, stateful stream that can be written to and closed. Instead, it
 * is an immutable <i>supplier</i> of {@code OutputStream} instances.
 *

import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.nio.charset.Charset;

/**
 * A destination to which bytes can be written, such as a file. Unlike an {@link OutputStream}, a
 * {@code ByteSink} is not an open, stateful stream that can be written to and closed. Instead, it
 * is an immutable <i>supplier</i> of {@code OutputStream} instances.
 *

// for the file metadata. [Writer] takes ownership of fh and may mutate
// its fields. The caller must not modify fh after calling [Writer.CreateHeader].
//
// This returns a [Writer] to which the file contents should be written.
// The file's contents must be written to the io.Writer before the next
// call to [Writer.Create], [Writer.CreateHeader], [Writer.CreateRaw], or [Writer.Close].

        SmbComClose close = new SmbComClose(fid, lastWriteTime);
        byte[] buffer = new byte[10];
        int written = close.writeParameterWordsWireFormat(buffer, 0);
        assertEquals(6, written, "writeParameterWordsWireFormat should return 6");
        // Only compare the first 6 bytes that were actually written
        byte[] actualWritten = new byte[6];
        System.arraycopy(buffer, 0, actualWritten, 0, 6);

        int pos = 8; // Position where content should be written
        int off = 0; // Offset where position should be written

        // Test with non-null source array
        int bytesWritten = NtlmMessage.writeSecurityBufferContent(dest, pos, off, src);
        assertEquals(src.length, bytesWritten, "Should return correct number of bytes written.");

        assertEquals(0x00, buffer[4]);
        assertEquals(0x00, buffer[5]);

        // Check that filename is written correctly (starting at offset 6)
        // The filename should be null-terminated Unicode string
        assertTrue(written > 6);

        // Verify the total bytes written is reasonable
        assertTrue(written > TEST_FILENAME.length());
    }

    @ParameterizedTest

        byte[] buffer = new byte[1024];

        int written = request.writeBytesWireFormat(buffer, 0);

        // Should write exactly 56 bytes (structure size without data)
        assertEquals(56, written);
        // Check structure size (first 2 bytes should be 57)
        assertEquals(57, (buffer[0] & 0xFF) | ((buffer[1] & 0xFF) << 8));
    }

    void testWriteSetupWireFormat() {
        trans2FindFirst2 = new Trans2FindFirst2(mockConfig, "\\test", "*.*", 0x16, 10, 1024);

        byte[] buffer = new byte[10];
        int written = trans2FindFirst2.writeSetupWireFormat(buffer, 0);

        assertEquals(2, written);
        assertEquals((byte) Trans2FindFirst2.TRANS2_FIND_FIRST2, buffer[0]);
        assertEquals((byte) 0x00, buffer[1]);
    }

    @Test

    }

    @Test
    void testWriteParameterWordsWireFormatLittleEndian() {
        byte[] dst = new byte[2];
        int written = instance.writeParameterWordsWireFormat(dst, 0);
        assertEquals(2, written, "writeParameterWordsWireFormat should write exactly 2 bytes");
        // SMBUtil.writeInt2 writes the low byte first (little‑endian)
        assertEquals((byte) (TEST_SID & 0xFF), dst[0]);

        assertEquals(smbComNtTransaction.parameterOffset, SmbComTransaction.readInt4(dst, 23),
                "parameterOffset should be written correctly");
        assertEquals(smbComNtTransaction.dataCount, SmbComTransaction.readInt4(dst, 27), "dataCount should be written correctly");
        assertEquals(smbComNtTransaction.dataOffset, SmbComTransaction.readInt4(dst, 31), "dataOffset should be written correctly");