// metricsCache.
//
// Note that returning an error here will cause the Metrics handler to return a
// 500 Internal Server Error.
type MetricsLoaderFn func(context.Context, MetricValues, *metricsCache) error

// JoinLoaders - joins multiple loaders into a single loader. The returned
// loader will call each of the given loaders in order. If any of the loaders
// return an error, the returned loader will return that error.

func TestS3String(t *testing.T) {
	const Domain = "SSE-S3"
	if domain := S3.String(); domain != Domain {
		t.Errorf("S3's string method returns wrong domain: got '%s' - want '%s'", domain, Domain)
	}
}

func TestSSECString(t *testing.T) {
	const Domain = "SSE-C"
	if domain := SSEC.String(); domain != Domain {
		t.Errorf("SSEC's string method returns wrong domain: got '%s' - want '%s'", domain, Domain)
	}
}

			if !testCase.success && err == nil {
				t.Error("expected failure but success instead")
			}
			if testCase.success && err != nil {
				t.Errorf("expected success but failed instead %s", err)
			}
			if testCase.success && !reflect.DeepEqual(testCase.expectedPatterns, gotPatterns) {
				t.Errorf("expected patterns %s but got %s", testCase.expectedPatterns, gotPatterns)
			}
		})
	}

	closed    bool
}

func (w *fileWriter) Write(p []byte) (int, error) {
	if w.closed {
		return 0, errors.New("zip: write to closed file")
	}
	if w.raw {
		return w.zipw.Write(p)
	}
	w.crc32.Write(p)
	return w.rawCount.Write(p)
}

func (w *fileWriter) close() error {
	if w.closed {
		return errors.New("zip: file closed twice")
	}
	w.closed = true
	if w.raw {

# Exceptions - `HTTPException` and `WebSocketException`

These are the exceptions that you can raise to show errors to the client.

When you raise an exception, as would happen with normal Python, the rest of the execution is aborted. This way you can raise these exceptions from anywhere in the code to abort a request and show the error to the client.

You can use:

* `HTTPException`
* `WebSocketException`

	maxConcurrentAsyncSend = 50000
)

// Target - event target interface
type Target interface {
	ID() TargetID
	IsActive() (bool, error)
	Save(Event) error
	SendFromStore(store.Key) error
	Close() error
	Store() TargetStore
}

// TargetStore is a shallow version of a target.Store
type TargetStore interface {
	Len() int
}

				continue
			}
		}

		index := index
		g.Go(func() error {
			var err error
			reply[index], err = sys.peerClients[index].GetMetrics(ctx, t, opts)
			return err
		}, index)
	}

	for index, err := range g.Wait() {
		if err != nil {
			reply[index].Errors = []string{fmt.Sprintf("%s: %s (rpc)", sys.peerClients[index].String(), err.Error())}
		}
	}
	return reply
}

	}

	return res, nil
}

// ErrProviderConfigNotFound - represents a non-existing provider error.
var ErrProviderConfigNotFound = errors.New("provider configuration not found")

// GetConfigInfo - returns config details for an LDAP configuration.
func (l *Config) GetConfigInfo(s config.Config, cfgName string) ([]madmin.IDPCfgInfo, error) {
	// For now only a single LDAP config is supported.
	if cfgName != madmin.Default {

		t.Fatal(err)
	}
	if len(tokens) != 7 {
		t.Errorf("Expected 7 got %d", len(tokens))
	}
	// for i, t := range tokens {
	// 	fmt.Printf("%d: %#v\n", i, t)
	// }
}

func TestParseSelectStatement(t *testing.T) {
	exp, err := ParseSelectStatement("select _3,_1,_2 as 'mytest'  from S3object")
	if err != nil {
		t.Fatalf("parse alias sql error: %v", err)
	}

			// This is a special case should be handled only for
			// windows, because windows API does not return "not a
			// directory" error message. Handle this specifically here.
			return errFileAccessDenied
		case isSysErrCrossDevice(err):
			return fmt.Errorf("%w (%s)->(%s)", errCrossDeviceLink, srcFilePath, dstFilePath)
		case osIsNotExist(err):
			return errFileNotFound
		case osIsExist(err):