{* ../../docs_src/background_tasks/tutorial001.py hl[1,13] *}

**FastAPI** créera l'objet de type `BackgroundTasks` pour vous et le passera comme paramètre.

## Créer une fonction de tâche

Une fonction à exécuter comme tâche d'arrière-plan est juste une fonction standard qui peut recevoir des paramètres.

	"istio.io/istio/pkg/test/util/assert"
)

func TestExistingPodAddedWhenNsLabeled(t *testing.T) {
	setupLogging()
	NodeName = "testnode"
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	pod := &corev1.Pod{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "test",
			Namespace: "test",
		},
		Spec: corev1.PodSpec{
			NodeName: NodeName,
		},
		Status: corev1.PodStatus{

  custom_dir: ../en/overrides
  palette:
  - media: "(prefers-color-scheme)"
    toggle:
      icon: material/lightbulb-auto
      name: Switch to light mode
  - media: '(prefers-color-scheme: light)'
    scheme: default
    primary: teal
    accent: amber
    toggle:
      icon: material/lightbulb
      name: Switch to dark mode
  - media: '(prefers-color-scheme: dark)'
    scheme: slate
    primary: teal

	err := d.DecodeElement(&val, &startElement)
	if err != nil {
		return err
	}
	*n = NoncurrentVersionTransition(val)
	n.set = true
	return nil
}

// IsNull returns true if NoncurrentTransition doesn't refer to any storage-class.
// Note: It supports immediate transition, i.e zero noncurrent days.
func (n NoncurrentVersionTransition) IsNull() bool {
	return n.StorageClass == ""
}

// Tokens; original spacing is lost but we don't need it.
type TokenReader interface {
	// Next returns the next token.
	Next() ScanToken
	// The following methods all refer to the most recent token returned by Next.
	// Text returns the original string representation of the token.
	Text() string
	// File reports the source file name of the token.
	File() string

	z.rebalMu.Lock()
	defer z.rebalMu.Unlock()

	r := z.rebalMeta
	if r == nil {
		return
	}

	r.PoolStats[poolIdx].update(bucket, fi)
}

const (
	rebalMetaName = "rebalance.bin"
	rebalMetaFmt  = 1
	rebalMetaVer  = 1
)

func (z *erasureServerPools) nextRebalBucket(poolIdx int) (string, bool) {
	z.rebalMu.RLock()
	defer z.rebalMu.RUnlock()

	r := z.rebalMeta

	testWorkRootDir := getEnv("TEST_WORK_ROOTDIR", "/tmp")

	tempCNIConfDir := mktemp(testWorkRootDir, "cni-conf-", t)
	defer rmDir(tempCNIConfDir, t)
	tempCNIBinDir := mktemp(testWorkRootDir, "cni-bin-", t)
	defer rmDir(tempCNIBinDir, t)
	tempK8sSvcAcctDir := mktemp(testWorkRootDir, "kube-svcacct-", t)
	defer rmDir(tempK8sSvcAcctDir, t)

	populateTempDirs(wd, cniConfDirOrderedFiles, tempCNIConfDir, tempK8sSvcAcctDir, t)

	"testing"

	"github.com/minio/minio/internal/config"
)

func TestServerConfig(t *testing.T) {
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	objLayer, fsDir, err := prepareFS(ctx)
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(fsDir)

	if err = newTestConfig(globalMinioDefaultRegion, objLayer); err != nil {
		t.Fatalf("Init Test config failed")
	}

	router := http.NewServeMux()
	installReady, watchReady := initRouter(router)

	assert.Equal(t, installReady.Load(), false)
	assert.Equal(t, watchReady.Load(), false)

	server := httptest.NewServer(router)
	defer server.Close()

	makeReq(t, server.URL, constants.LivenessEndpoint, http.StatusOK)
	makeReq(t, server.URL, constants.ReadinessEndpoint, http.StatusServiceUnavailable)

	installReady.Store(true)
	watchReady.Store(true)

	const isWriteLock = false
	return lm.lockLoop(ctx, id, source, timeout, isWriteLock)
}

func (lm *LRWMutex) lock(id, source string, isWriteLock bool) (locked bool) {
	lm.mu.Lock()
	defer lm.mu.Unlock()

	lm.id = id
	lm.source = source
	if isWriteLock {
		if lm.ref == 0 && !lm.isWriteLock {
			lm.ref = 1
			lm.isWriteLock = true
			locked = true
		}
	} else {
		if !lm.isWriteLock {