// as this is blocked before the unlock happens, it's okay.
	mu.Lock()
}

func blockMutexN(t *testing.T, n int, d time.Duration) {
	var wg sync.WaitGroup
	var mu sync.Mutex
	mu.Lock()
	go func() {
		awaitBlockedGoroutine(t, "sync.Mutex.Lock", "blockMutex", n)
		time.Sleep(d)
		mu.Unlock()
	}()
	// Note: Unlock releases mu before recording the mutex event,

	"github.com/google/uuid"
	"github.com/minio/minio/internal/bucket/object/lock"
	xhttp "github.com/minio/minio/internal/http"
)

func TestParseAndValidateLifecycleConfig(t *testing.T) {
	testCases := []struct {
		inputConfig           string
		expectedParsingErr    error
		expectedValidationErr error
		lr                    lock.Retention
	}{
		{ // Valid lifecycle config
			inputConfig: `<LifecycleConfiguration>

		(bytes.HasPrefix(c.SessionTicketKey[:], deprecatedSessionTicketKey) || len(c.sessionTicketKeys) > 0) {
		return
	}

	// We need to write some data, so get an exclusive lock and re-check any conditions.
	c.mutex.RUnlock()
	defer c.mutex.RLock()
	c.mutex.Lock()
	defer c.mutex.Unlock()
	if c.SessionTicketKey == [32]byte{} {
		if _, err := io.ReadFull(c.rand(), c.SessionTicketKey[:]); err != nil {

}

// sets globalObjectAPI to `nil`.
func resetGlobalObjectAPI() {
	globalObjLayerMutex.Lock()
	globalObjectAPI = nil
	globalObjLayerMutex.Unlock()
}

// reset the value of the Global server config.
// set it to `nil`.
func resetGlobalConfig() {
	// hold the mutex lock before a new config is assigned.
	globalServerConfigMu.Lock()
	// Save the loaded config globally.
	globalServerConfig = nil

	ErrObjectLockConfigurationNotFound: {
		Code:           "ObjectLockConfigurationNotFoundError",
		Description:    "Object Lock configuration does not exist for this bucket",
		HTTPStatusCode: http.StatusNotFound,
	},
	ErrObjectLockConfigurationNotAllowed: {
		Code:           "InvalidBucketState",
		Description:    "Object Lock configuration cannot be enabled on existing buckets",
		HTTPStatusCode: http.StatusConflict,
	},

// standalone goroutine and already has all necessary locks.
func (ctrl *PersistentVolumeController) recycleVolumeOperation(ctx context.Context, volume *v1.PersistentVolume) {
	logger := klog.FromContext(ctx)
	logger.V(4).Info("RecycleVolumeOperation started", "volumeName", volume.Name)

	// This method may have been waiting for a volume lock for some time.

		}
	}
}

func TestSlowStartBatch(t *testing.T) {
	fakeErr := fmt.Errorf("fake error")
	callCnt := 0
	callLimit := 0
	var lock sync.Mutex
	fn := func() error {
		lock.Lock()
		defer lock.Unlock()
		callCnt++
		if callCnt > callLimit {
			return fakeErr
		}
		return nil
	}

	tests := []struct {
		name              string

		for _, t := range ts.([]*abi.Type) {
			if haveIdenticalUnderlyingType(&ft.Type, t, true) {
				return toRType(t)
			}
		}
	}

	// Not in cache, lock and retry.
	funcLookupCache.Lock()
	defer funcLookupCache.Unlock()
	if ts, ok := funcLookupCache.m.Load(hash); ok {
		for _, t := range ts.([]*abi.Type) {
			if haveIdenticalUnderlyingType(&ft.Type, t, true) {

	// If the goroutine is in cgo, and we have a cgo traceback, print that.
	if iscgo && gp.m != nil && gp.m.ncgo > 0 && gp.syscallsp != 0 && gp.m.cgoCallers != nil && gp.m.cgoCallers[0] != 0 {
		// Lock cgoCallers so that a signal handler won't
		// change it, copy the array, reset it, unlock it.
		// We are locked to the thread and are not running
		// concurrently with a signal handler.

	"--kubeconfig=/kubeconfig",
	"--large-cluster-size-threshold=100",
	"--leader-elect=false",
	"--leader-elect-lease-duration=30s",
	"--leader-elect-renew-deadline=15s",
	"--leader-elect-resource-lock=configmap",
	"--leader-elect-retry-period=5s",
	"--legacy-service-account-token-clean-up-period=8760h",
	"--master=192.168.4.20",
	"--max-endpoints-per-slice=200",
	"--min-resync-period=8h",