func TestWatchJobs(t *testing.T) {
	clientset := fake.NewSimpleClientset()
	fakeWatch := watch.NewFake()
	clientset.PrependWatchReactor("jobs", core.DefaultWatchReactor(fakeWatch, nil))
	manager, sharedInformerFactory := newJobControllerFromClient(clientset, controller.NoResyncPeriodFunc)
	manager.podStoreSynced = alwaysReady
	manager.jobStoreSynced = alwaysReady

	var testJob batch.Job
	received := make(chan struct{})

	// The update sent through the fakeWatcher should make its way into the workqueue,
	// and eventually into the syncHandler.
	manager.syncHandler = func(key string) error {
		defer close(received)
		ns, name, err := cache.SplitMetaNamespaceKey(key)
		if err != nil {
			t.Errorf("Error getting namespace/name from key %v: %v", key, err)
		}
		job, err := manager.jobLister.Jobs(ns).Get(name)
		if err != nil || job == nil {
			t.Errorf("Expected to find job under key %v: %v", key, err)
			return nil
		}
		if !api.Semantic.DeepDerivative(*job, testJob) {
			t.Errorf("Expected %#v, but got %#v", testJob, *job)
		}
		return nil
	}
	// Start only the job watcher and the workqueue, send a watch event,
	// and make sure it hits the sync method.
	stopCh := make(chan struct{})
	defer close(stopCh)
	sharedInformerFactory.Start(stopCh)
	go manager.Run(1, stopCh)

	// We're sending new job to see if it reaches syncHandler.
	testJob.Namespace = "bar"
	testJob.Name = "foo"
	fakeWatch.Add(&testJob)
	t.Log("Waiting for job to reach syncHandler")
	<-received
}
func TestSyncOne_RunOrNot(t *testing.T) {
	testCases := map[string]struct {
		// sj spec
		concurrencyPolicy batch.ConcurrencyPolicy
		suspend           bool
		schedule          string
		deadline          int64

		// sj status
		ranPreviously bool
		stillActive   bool

		// environment
		now time.Time

		// expectations
		expectCreate bool
		expectDelete bool
		expectActive int
	}{
		"never ran, not time, A":                {A, F, onTheHour, noDead, F, F, justBeforeTheHour(), F, F, 0},
		"never ran, not time, F":                {f, F, onTheHour, noDead, F, F, justBeforeTheHour(), F, F, 0},
		"never ran, not time, R":                {R, F, onTheHour, noDead, F, F, justBeforeTheHour(), F, F, 0},
		"never ran, is time, A":                 {A, F, onTheHour, noDead, F, F, justAfterTheHour(), T, F, 1},
		"never ran, is time, F":                 {f, F, onTheHour, noDead, F, F, justAfterTheHour(), T, F, 1},
		"never ran, is time, R":                 {R, F, onTheHour, noDead, F, F, justAfterTheHour(), T, F, 1},
		"never ran, is time, suspended":         {A, T, onTheHour, noDead, F, F, justAfterTheHour(), F, F, 0},
		"never ran, is time, past deadline":     {A, F, onTheHour, shortDead, F, F, justAfterTheHour(), F, F, 0},
		"never ran, is time, not past deadline": {A, F, onTheHour, longDead, F, F, justAfterTheHour(), T, F, 1},

		"prev ran but done, not time, A":                {A, F, onTheHour, noDead, T, F, justBeforeTheHour(), F, F, 0},
		"prev ran but done, not time, F":                {f, F, onTheHour, noDead, T, F, justBeforeTheHour(), F, F, 0},
		"prev ran but done, not time, R":                {R, F, onTheHour, noDead, T, F, justBeforeTheHour(), F, F, 0},
		"prev ran but done, is time, A":                 {A, F, onTheHour, noDead, T, F, justAfterTheHour(), T, F, 1},
		"prev ran but done, is time, F":                 {f, F, onTheHour, noDead, T, F, justAfterTheHour(), T, F, 1},
		"prev ran but done, is time, R":                 {R, F, onTheHour, noDead, T, F, justAfterTheHour(), T, F, 1},
		"prev ran but done, is time, suspended":         {A, T, onTheHour, noDead, T, F, justAfterTheHour(), F, F, 0},
		"prev ran but done, is time, past deadline":     {A, F, onTheHour, shortDead, T, F, justAfterTheHour(), F, F, 0},
		"prev ran but done, is time, not past deadline": {A, F, onTheHour, longDead, T, F, justAfterTheHour(), T, F, 1},

		"still active, not time, A":                {A, F, onTheHour, noDead, T, T, justBeforeTheHour(), F, F, 1},
		"still active, not time, F":                {f, F, onTheHour, noDead, T, T, justBeforeTheHour(), F, F, 1},
		"still active, not time, R":                {R, F, onTheHour, noDead, T, T, justBeforeTheHour(), F, F, 1},
		"still active, is time, A":                 {A, F, onTheHour, noDead, T, T, justAfterTheHour(), T, F, 2},
		"still active, is time, F":                 {f, F, onTheHour, noDead, T, T, justAfterTheHour(), F, F, 1},
		"still active, is time, R":                 {R, F, onTheHour, noDead, T, T, justAfterTheHour(), T, T, 1},
		"still active, is time, suspended":         {A, T, onTheHour, noDead, T, T, justAfterTheHour(), F, F, 1},
		"still active, is time, past deadline":     {A, F, onTheHour, shortDead, T, T, justAfterTheHour(), F, F, 1},
		"still active, is time, not past deadline": {A, F, onTheHour, longDead, T, T, justAfterTheHour(), T, F, 2},
	}
	for name, tc := range testCases {
		sj := scheduledJob()
		sj.Spec.ConcurrencyPolicy = tc.concurrencyPolicy
		sj.Spec.Suspend = &tc.suspend
		sj.Spec.Schedule = tc.schedule
		if tc.deadline != noDead {
			sj.Spec.StartingDeadlineSeconds = &tc.deadline
		}

		var (
			job *batch.Job
			err error
		)
		js := []batch.Job{}
		if tc.ranPreviously {
			sj.ObjectMeta.CreationTimestamp = unversioned.Time{Time: justBeforeThePriorHour()}
			sj.Status.LastScheduleTime = &unversioned.Time{Time: justAfterThePriorHour()}
			job, err = getJobFromTemplate(&sj, sj.Status.LastScheduleTime.Time)
			if err != nil {
				t.Fatalf("%s: nexpected error creating a job from template: %v", name, err)
			}
			job.UID = "1234"
			job.Namespace = ""
			if tc.stillActive {
				sj.Status.Active = []api.ObjectReference{{UID: job.UID}}
				js = append(js, *job)
			}
		} else {
			sj.ObjectMeta.CreationTimestamp = unversioned.Time{Time: justBeforeTheHour()}
			if tc.stillActive {
				t.Errorf("%s: test setup error: this case makes no sense", name)
			}
		}

		jc := &fakeJobControl{Job: job}
		sjc := &fakeSJControl{}
		pc := &fakePodControl{}
		recorder := record.NewFakeRecorder(10)

		SyncOne(sj, js, tc.now, jc, sjc, pc, recorder)
		expectedCreates := 0
		if tc.expectCreate {
			expectedCreates = 1
		}
		if len(jc.Jobs) != expectedCreates {
			t.Errorf("%s: expected %d job started, actually %v", name, expectedCreates, len(jc.Jobs))
		}

		expectedDeletes := 0
		if tc.expectDelete {
			expectedDeletes = 1
		}
		if len(jc.DeleteJobName) != expectedDeletes {
			t.Errorf("%s: expected %d job deleted, actually %v", name, expectedDeletes, len(jc.DeleteJobName))
		}

		// Status update happens once when ranging through job list, and another one if create jobs.
		expectUpdates := 1
		expectedEvents := 0
		if tc.expectCreate {
			expectedEvents++
			expectUpdates++
		}
		if tc.expectDelete {
			expectedEvents++
		}
		if len(recorder.Events) != expectedEvents {
			t.Errorf("%s: expected %d event, actually %v", name, expectedEvents, len(recorder.Events))
		}

		if tc.expectActive != len(sjc.Updates[expectUpdates-1].Status.Active) {
			t.Errorf("%s: expected Active size %d, got %d", name, tc.expectActive, len(sjc.Updates[expectUpdates-1].Status.Active))
		}
	}
}