t.Fatalf("expected value false, got %t", ok)
	}

	formats[2].Erasure.This = ""
	if ok := formatErasureV3ThisEmpty(formats); !ok {
		t.Fatalf("expected value true, got %t", ok)
	}
}

// Tests xl format migration.
func TestFormatErasureMigrate(t *testing.T) {
	// Get test root.
	rootPath := t.TempDir()

	m := &formatErasureV1{}
	m.Format = formatBackendErasure
	m.Version = formatMetaVersionV1

	Endpoint   string
	MountPath  string
	ID         string
	Rotational bool
	Metrics    DiskMetrics
	Error      string // carries the error over the network
}

// DiskMetrics has the information about XL Storage APIs
// the number of calls of each API and the moving average of
// the duration of each API.
type DiskMetrics struct {
	LastMinute              map[string]AccElem `json:"apiLatencies,omitempty"`

		{3, 2},
		// Replace existing part.
		{4, 3},
		// Missing part.
		{6, -1},
	}

	// Setup.
	fi := newFileInfo("test-object", 8, 8)
	fi.Erasure.Index = 1
	if !fi.IsValid() {
		t.Fatalf("unable to get xl meta")
	}

	// Test them.
	for _, testCase := range testCases {
		if testCase.expectedIndex > -1 {
			partNumString := strconv.Itoa(testCase.partNum)

{* ../../docs_src/handling_errors/tutorial005_py310.py hl[14] *}

Now try sending an invalid item like:

```JSON
{
  "title": "towel",
  "size": "XL"
}
```

You will receive a response telling you that the data is invalid containing the received body:

```JSON hl_lines="12-15"
{
  "detail": [
    {
      "loc": [
        "body",

)

func main() {
	app := cli.NewApp()
	app.Copyright = "MinIO, Inc."
	app.Usage = "xl.meta to JSON"
	app.HideVersion = true
	app.CustomAppHelpTemplate = `NAME:
  {{.Name}} - {{.Usage}}

USAGE:
  {{.Name}} {{if .VisibleFlags}}[FLAGS]{{end}} METAFILES...

Multiple files can be added. Files ending in '.zip' will be searched
for 'xl.meta' files. Wildcards are accepted: 'testdir/*.txt' will compress

		}
	}
}

func TestObjectIsRemote(t *testing.T) {
	fi := newFileInfo("object", 8, 8)
	fi.Erasure.Index = 1
	if !fi.IsValid() {
		t.Fatalf("unable to get xl meta")
	}

	testCases := []struct {
		meta   map[string]string
		remote bool
	}{
		{
			// restore in progress
			meta: map[string]string{
				xhttp.AmzRestore: ongoingRestoreObj().String(),

```JSON
{
  "title": "towel",
  "size": "XL"
}
```

受信したボディを含むデータが無効であることを示すレスポンスが表示されます:

```JSON hl_lines="12-15"
{
  "detail": [
    {
      "loc": [
        "body",
        "size"
      ],
      "msg": "value is not a valid integer",
      "type": "type_error.integer"
    }
  ],
  "body": {
    "title": "towel",
    "size": "XL"
  }
}
```

	start := int(keyCrc % uint32(cardinality))
	for i := 1; i <= cardinality; i++ {
		nums[i-1] = 1 + ((start + i) % cardinality)
	}
	return nums
}

// Reads all `xl.meta` metadata as a FileInfo slice.
// Returns error slice indicating the failed metadata reads.

			createStorage := func(endpoint Endpoint) bool {
				xl, err := newXLStorage(endpoint, false)
				if err != nil {
					// if supported errors don't fail, we proceed to
					// printing message and moving forward.
					if errors.Is(err, errDriveIsRoot) {
						err = fmt.Errorf("major: %v: minor: %v: %w", xl.major, xl.minor, err)
					}
					logFatalErrs(err, endpoint, false)
					return false

		if volInfo.count < readQuorum {
			healBuckets.Delete(volName)
		}
		return true
	})

	return nil
}

var (
	errLegacyXLMeta   = errors.New("legacy XL meta")
	errOutdatedXLMeta = errors.New("outdated XL meta")
	errPartCorrupt    = errors.New("part corrupt")
	errPartMissing    = errors.New("part missing")
)

// Only heal on disks where we are sure that healing is needed. We can expand