//
// Open should reject attempts to open names that do not satisfy
// ValidPath(name), returning a *PathError with Err set to
// ErrInvalid or ErrNotExist.
func (ffs *fakeFsWithFakeFds) Open(name string) (fs.File, error) {
	f, err := ffs.ReadDirFS.Open(name)
	if err != nil {
		return nil, err
	}
	return wrapFile(f), nil
}

func wrapFile(f fs.File) fs.File {
	return &fakeFileFakeFds{File: f, fd: 0}

	f1s, err := os.Stat(pathA)
	if err != nil {
		t.Fatal(err)
	}
	f2s, err := os.Stat(pathB)
	if err != nil {
		t.Fatal(err)
	}
	if !os.SameFile(f1, f1s) {
		t.Errorf("SameFile(%v, %v) = false; want true", f1, f1s)
	}
	if !os.SameFile(f2, f2s) {
		t.Errorf("SameFile(%v, %v) = false; want true", f2, f2s)
	}

		}

	}

	took := time.Since(purgeStart).Seconds()
	if took > maxDurationSecondsForLog {
		// Log if we took a lot of time to load.
		logger.Info("IAM expired STS purge took %.2fs", took)
	}

	// Store the newly populated map in the iam cache. This takes care of
	// removing stale entries from the existing map.
	cache.iamSTSAccountsMap = stsAccountsFromStore

				iamLogIf(ctx, fmt.Errorf("Failure in periodic refresh for IAM (took %.2fs): %v", time.Since(refreshStart).Seconds(), err), logger.WarningKind)
			} else {
				took := time.Since(refreshStart).Seconds()
				if took > maxDurationSecondsForLog {
					// Log if we took a lot of time to load.
					logger.Info("IAM refresh took %.2fs", took)
				}
			}

		w.c.output = append(w.c.output, line...)
		b = b[end:]
	}
	return
}

// fmtDuration returns a string representing d in the form "87.00s".
func fmtDuration(d time.Duration) string {
	return fmt.Sprintf("%.2fs", d.Seconds())
}

// TB is the interface common to T, B, and F.
type TB interface {
	Cleanup(func())
	Error(args ...any)
	Errorf(format string, args ...any)
	Fail()
	FailNow()
	Failed() bool

				took := time.Since(refreshStart).Seconds()
				if took > maxRefreshDurationSecondsForLog {
					// Log if we took a lot of time.
					logger.Info("Site replication healing refresh took %.2fs", took)
				}

				// wait for 200 millisecond, if we are experience lot of I/O
				waitForLowIO(runtime.GOMAXPROCS(0), 200*time.Millisecond, currentHTTPIO)
			}
			healTimer.Reset(siteHealTimeInterval)

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