expectErr := (err != nil)

		if expectErr != testCase.expectErr {
			t.Fatalf("case %v: error: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
		}
		if err != errUnformattedDisk {
			t.Fatalf("case %v: error: expected: %v, got: %v", i+1, errUnformattedDisk, err)
		}
	}
}

func testStorageAPIStatInfoFile(t *testing.T, storage StorageAPI) {

// an error.
func readDirFn(dirPath string, fn func(name string, typ os.FileMode) error) error {
	fd, err := openFileWithFD(dirPath, readMode, 0o666)
	if err != nil {
		if osErrToFileErr(err) == errFileNotFound {
			return nil
		}
		if !osIsPermission(err) {
			return osErrToFileErr(err)
		}
		// There may be permission error when dirPath

To signify the end of the stream, close the ring buffer from the writer side with `rb.CloseWriter()`

Either side can use `rb.CloseWithError(err error)` to signal an error and close the ring buffer. 
Any reads or writes will return the error on next call.

	writer := &multiWriter{
		writers:     writers,
		writeQuorum: quorum,
		errs:        make([]error, len(writers)),
	}

	for {
		var blocks [][]byte
		n, err := io.ReadFull(src, buf)
		if err != nil {
			if !IsErrIgnored(err, []error{
				io.EOF,
				io.ErrUnexpectedEOF,
			}...) {
				return 0, err
			}
		}

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package crypto

import (
	"context"
	"errors"
	"fmt"
	"io"
	"net/http"

	"github.com/minio/minio/internal/fips"
	"github.com/minio/minio/internal/ioutil"
	"github.com/minio/minio/internal/logger"
	"github.com/minio/sio"
)

const (

				// fmt.Println(rec)
				r, _, err := jsonpathEval(jp.PathExpr, rec)
				if err != nil {
					t.Errorf("Error: %d %d %v", i, j, err)
				}
				if !reflect.DeepEqual(r, tc.res[j]) {
					fmt.Printf("%#v (%v) != %v (%v)\n", r, reflect.TypeOf(r), tc.res[j], reflect.TypeOf(tc.res[j]))
					t.Errorf("case: %d %d failed", i, j)
				}
			}
		})
	}

	}

	*tid = *targetID
	return nil
}

// parseTargetID - parses string to TargetID.
func parseTargetID(s string) (*TargetID, error) {
	tokens := strings.Split(s, ":")
	if len(tokens) != 2 {
		return nil, fmt.Errorf("invalid TargetID format '%v'", s)
	}

	return &TargetID{
		ID:   tokens[0],
		Name: tokens[1],
	}, nil

// If the Update function returns an error the value is forwarded as is and not cached.
func (t *Cache[T]) GetWithCtx(ctx context.Context) (T, error) {
	v := t.val.Load()
	ttl := t.ttl
	vTime := t.lastUpdateMs.Load()
	tNow := time.Now().UnixMilli()
	if v != nil && tNow-vTime < ttl.Milliseconds() {
		return *v, nil
	}

	// Fetch new value asynchronously, while we do not return an error
	// if v != nil value or

			a[i] = 8
			b[i] = 9
		}
		cmp := Compare(a[:len], b[:len])
		if cmp != 0 {
			t.Errorf(`CompareIdentical(%d) = %d`, len, cmp)
		}
		if len > 0 {
			cmp = Compare(a[:len-1], b[:len])
			if cmp != -1 {
				t.Errorf(`CompareAshorter(%d) = %d`, len, cmp)
			}
			cmp = Compare(a[:len], b[:len-1])
			if cmp != 1 {
				t.Errorf(`CompareBshorter(%d) = %d`, len, cmp)
			}
		}
		for k := 0; k < len; k++ {

func (m *MessageThreshold) Type() string {
	return "Level"
}

// Set is a function declared in the pflag.Value interface
func (m *MessageThreshold) Set(s string) error {
	levelMap := diag.GetUppercaseStringToLevelMap()
	level, ok := levelMap[strings.ToUpper(s)]
	if !ok {
		return errors.New("invalid level option")
	}
	m.Level = level
	return nil