package ioutil

import (
	"io"
	"os"

	"github.com/minio/minio/internal/lock"
)

// AppendFile - appends the file "src" to the file "dst"
func AppendFile(dst string, src string, osync bool) error {
	appendFile, err := lock.Open(dst, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0o666)
	if err != nil {
		return err
	}
	defer appendFile.Close()

	srcFile, err := lock.Open(src, os.O_RDONLY, 0o666)

        byte[] src = new byte[100];
        byte[] dst = new byte[100];

        assertDoesNotThrow(() -> InputValidator.validateArrayBounds(src, 0, dst, 0, 100));
        assertDoesNotThrow(() -> InputValidator.validateArrayBounds(src, 50, dst, 50, 50));

        assertThrows(IllegalArgumentException.class, () -> InputValidator.validateArrayBounds(null, 0, dst, 0, 10));

        setField(range, "lengthInBytes", 654321L);
        byte[] dst = new byte[20];
        int writtenSize = range.encode(dst, 0);
        assertEquals(10, writtenSize, "Range size when not large should be 10");
        // create a new empty range and decode
        LockingAndXRange decoded = new LockingAndXRange(false);
        int decodedSize = decoded.decode(dst, 0, dst.length);

     * This method should do nothing and return 0.
     */
    @Test
    void testWriteParameterWordsWireFormat() {
        byte[] dst = new byte[10];
        int dstIndex = 0;
        // The method should return 0 as it writes no parameter words
        int result = smbComNegotiate.writeParameterWordsWireFormat(dst, dstIndex);
        assertEquals(0, result, "writeParameterWordsWireFormat should return 0.");
    }

    /**

            // Given
            byte[] dst = new byte[100];
            int dstIndex = 10;

            // When
            Method method = SmbComNtCancel.class.getDeclaredMethod("writeParameterWordsWireFormat", byte[].class, int.class);
            method.setAccessible(true);
            int result = (int) method.invoke(cancel, dst, dstIndex);

            // Then
            assertEquals(0, result);

    @Override
    protected int writeParameterWordsWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int writeBytesWireFormat(final byte[] dst, int dstIndex) {
        final int start = dstIndex;

        dst[dstIndex] = (byte) 0x04;
        dstIndex++;
        dstIndex += writeString(this.path, dst, dstIndex);

        return dstIndex - start;
    }

    @Override

    }

    @Override
    protected int writeSetupWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int writeParametersWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    protected int writeDataWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override

    public NdrObject() {
        // Default constructor
    }

    /**
     * Encodes this NDR object into the specified buffer
     * @param dst the destination buffer for encoding
     * @throws NdrException if encoding fails
     */
    public abstract void encode(NdrBuffer dst) throws NdrException;

    /**
     * Decodes this NDR object from the specified buffer
     * @param src the source buffer for decoding

    public NdrObject() {
        // Default constructor
    }

    /**
     * Encodes this NDR object into the specified buffer
     * @param dst the destination buffer for encoding
     * @throws NdrException if encoding fails
     */
    public abstract void encode(NdrBuffer dst) throws NdrException;

    /**
     * Decodes this NDR object from the specified buffer
     * @param src the source buffer for decoding

        assertTrue(result.contains("dataSize=4"));
    }

    @Test
    void testWriteParameterWordsWireFormat() {
        byte[] dst = new byte[1024];
        int result = response.writeParameterWordsWireFormat(dst, 0);

        // The method should write parameter words
        assertTrue(result >= 0, "writeParameterWordsWireFormat should return non-negative value");
    }

    @Test