"istio.io/istio/pkg/test/util/assert"
	"istio.io/istio/pkg/test/util/retry"
)

func TestEnqueueForParentHandler(t *testing.T) {
	var written atomic.String
	q := NewQueue("test", WithReconciler(func(key types.NamespacedName) error {
		t.Logf("got event %v", key)
		written.Store(key.String())
		return nil
	}))
	go q.Run(test.NewStop(t))
	handler := EnqueueForParentHandler(q, gvk.Deployment)
	handler(&corev1.Pod{

	// if this fits within our limit, or we're already truncating, write and return
	if r.written+textRuneLength <= truncateAtTotalRunes || r.truncating {
		r.written += textRuneLength
		r.writer.Header().Add("Warning", header)
		return
	}

	// otherwise, enable truncation, reset, and replay the existing items as truncated warnings
	r.truncating = true
	r.written = 0
	r.writer.Header().Del("Warning")

    }

    /**
     * The file the POM will be written to.
     *
     * @return The file the POM will be written to
     */
    @OutputFile
    public File getDestination() {
        return destination == null ? null : getFileResolver().resolve(destination);
    }

    /**
     * Sets the destination the descriptor will be written to.
     *

    }

    /**
     * The file the descriptor will be written to.
     *
     * @return The file the descriptor will be written to
     */
    @OutputFile
    public File getDestination() {
        return destination == null ? null : getFileResolver().resolve(destination);
    }

    /**
     * Sets the destination the descriptor will be written to.
     *

				if written == 0 {
					return 0, false, nil
				}
				// Otherwise src is at EOF, which means
				// we are done.
				return written, true, nil
			}
			remain -= n
			written += n
		default:
			return written, true, err
		}
	}
	return written, true, nil
}

// copyFileRange performs one round of copy_file_range(2).

// at a time.
const maxSendfileSize int = 4 << 20

// SendFile wraps the sendfile system call.
func SendFile(dstFD *FD, src int, remain int64) (written int64, err error, handled bool) {
	defer func() {
		TestHookDidSendFile(dstFD, src, written, err, handled)
	}()
	if err := dstFD.writeLock(); err != nil {
		return 0, err, false
	}
	defer dstFD.writeUnlock()

	defer ODirectPoolSmall.Put(bufp)

	written, err := CopyAligned(f, io.LimitReader(r, 5), *bufp, r.Size(), f)
	if !errors.Is(err, io.ErrUnexpectedEOF) {
		t.Errorf("Expected io.ErrUnexpectedEOF, but got %v", err)
	}
	if written != 5 {
		t.Errorf("Expected written to be '5', but got %v", written)
	}

	f.Seek(0, io.SeekStart)
	r.Seek(0, io.SeekStart)

	written, err = CopyAligned(f, r, *bufp, r.Size(), f)

	var werr error
	err = sc.Read(func(fd uintptr) bool {
		written, werr, handled = poll.SendFile(&c.pfd, int(fd), pos, remain)
		return true
	})
	if err == nil {
		err = werr
	}

	if lr != nil {
		lr.N = remain - written
	}

	_, err1 := f.Seek(written, io.SeekCurrent)
	if err1 != nil && err == nil {
		return written, err1, handled
	}

	return written, wrapSyscallError("sendfile", err), handled

// at a time.
const maxSendfileSize int = 4 << 20

// SendFile wraps the sendfile system call.
func SendFile(dstFD *FD, src int, pos, remain int64) (written int64, err error, handled bool) {
	defer func() {
		TestHookDidSendFile(dstFD, src, written, err, handled)
	}()
	if err := dstFD.writeLock(); err != nil {
		return 0, err, false
	}
	defer dstFD.writeUnlock()

import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import java.nio.charset.Charset;

/**
 * A destination to which characters can be written, such as a text file. Unlike a {@link Writer}, a
 * {@code CharSink} is not an open, stateful stream that can be written to and closed. Instead, it
 * is an immutable <i>supplier</i> of {@code Writer} instances.
 *
 * <p>{@code CharSink} provides two kinds of methods:
 *
 * <ul>