}

  public void testExecutorOnlyCalledOnce() throws Exception {
    TestService service = new TestService();
    service.startAsync().awaitRunning();
    // It should be called once during startup.
    assertEquals(1, service.numberOfTimesExecutorCalled.get());
    for (int i = 1; i < 10; i++) {
      service.runFirstBarrier.await();
      assertEquals(i, service.numberOfTimesRunCalled.get());

    // TODO: Use @RequiresInstalledToolChain instead once Xcode test are sorted out
    void assumeSwiftCompilerVersion(SwiftVersion swiftVersion) {
        assert toolChain != null, "You need to specify Swift tool chain requirement with 'requireSwiftToolChain()'"
        assumeTrue(toolChain.version.major == swiftVersion.version)
    }

    // TODO: Use @RequiresInstalledToolChain instead once Xcode test are sorted out

func (c *Repair) RunUntil(onFirstSuccess func(), stopCh chan struct{}) {
	c.broadcaster.StartRecordingToSink(stopCh)
	defer c.broadcaster.Shutdown()

	var once sync.Once
	wait.Until(func() {
		if err := c.runOnce(); err != nil {
			runtime.HandleError(err)
			return
		}
		once.Do(onFirstSuccess)
	}, c.interval, stopCh)
}

// runOnce verifies the state of the port allocations and returns an error if an unrecoverable problem occurs.

type lazyObject struct {
	parent  *Scope
	resolve func() Object
	obj     Object
	once    sync.Once
}

// resolve returns the Object represented by obj, resolving lazy
// objects as appropriate.
func resolve(name string, obj Object) Object {
	if lazy, ok := obj.(*lazyObject); ok {
		lazy.once.Do(func() {
			obj := lazy.resolve()

			if _, ok := obj.(*lazyObject); ok {

type lazyObject struct {
	parent  *Scope
	resolve func() Object
	obj     Object
	once    sync.Once
}

// resolve returns the Object represented by obj, resolving lazy
// objects as appropriate.
func resolve(name string, obj Object) Object {
	if lazy, ok := obj.(*lazyObject); ok {
		lazy.once.Do(func() {
			obj := lazy.resolve()

			if _, ok := obj.(*lazyObject); ok {

	}

	// If batch is enabled, the event will be batched in memory
	// and will be committed once the batch is full.
	if target.batch != nil {
		return target.addToBatch(key)
	}

	eventData, eErr := target.store.Get(key.Name)
	if eErr != nil {
		// The last event key in a successful batch will be sent in the channel atmost once by the replayEvents()
		// Such events will not exist and wouldve been already been sent successfully.

	var errs []error

	// If the coredns ConfigMap is missing, show a warning and assume that the
	// DNS addon was skipped during "kubeadm init", and that its redeployment on upgrade is not desired.
	//
	// TODO: remove this once "kubeadm upgrade apply" phases are supported:
	//   https://github.com/kubernetes/kubeadm/issues/1318
	var missingCoreDNSConfigMap bool
	if _, err := client.CoreV1().ConfigMaps(metav1.NamespaceSystem).Get(
		context.TODO(),

            assert p.id == "foo"
            assert p.namespace == null
            assert p.name == "foo"
        }
        0 * action._
    }

    def "rules plugin is applied at most once"() {
        def action = Mock(Action)

        given:
        addPluginId("foo", rulesClass)
        manager.withPlugin("foo", action)

        when:
        manager.apply(rulesClass)

	// self-determined directory path. The mount point and its
	// content should be owned by `fsUser` or 'fsGroup' so that it can be
	// accessed by the pod. This may be called more than once, so
	// implementations must be idempotent.
	// It could return following types of errors:
	//   - TransientOperationFailure
	//   - UncertainProgressError

   * #notifyFailed(Throwable)} instead.
   *
   * <p>This method should return promptly; prefer to do work on a different thread where it is
   * convenient. It is invoked exactly once on service startup, even when {@link #startAsync} is
   * called multiple times.
   */
  @ForOverride
  protected abstract void doStart();

  /**