Merge pull request #51062 from alrs/fix-statefulset-test-swallowed-errors

Automatic merge from submit-queue (batch tested with PRs 50980, 46902, 51051, 51062, 51020)

Fix swallowed errors in statefulset tests

**What this PR does / why we need it**: Fixes errors that were being swallowed in the tests of the statefulset package.

```release-note NONE
```

pkg/controller/statefulset/stateful_set_control_test.go

@@ -474,6 +474,9 @@ func TestStatefulSetControl_getSetRevisions(t *testing.T) {
 			t.Fatal(err)
 		}
 		current, update, _, err := ssc.getStatefulSetRevisions(test.set, revisions)
+		if err != nil {
+			t.Fatalf("error getting statefulset revisions:%v", err)
+		}
 		revisions, err = ssc.ListRevisions(test.set)
 		if err != nil {
 			t.Fatal(err)

pkg/controller/statefulset/stateful_set_test.go

@@ -615,6 +615,9 @@ func scaleUpStatefulSetController(set *apps.StatefulSet, ssc *StatefulSetControl
 	}
 	for set.Status.ReadyReplicas < *set.Spec.Replicas {
 		pods, err := spc.podsLister.Pods(set.Namespace).List(selector)
+		if err != nil {
+			return err
+		}
 		ord := len(pods) - 1
 		pod := getPodAtOrdinal(pods, ord)
 		if pods, err = spc.setPodPending(set, ord); err != nil {
@@ -669,6 +672,9 @@ func scaleDownStatefulSetController(set *apps.StatefulSet, ssc *StatefulSetContr
 	ssc.enqueueStatefulSet(set)
 	fakeWorker(ssc)
 	pods, err = spc.addTerminatingPod(set, ord)
+	if err != nil {
+		return err
+	}
 	pod = getPodAtOrdinal(pods, ord)
 	ssc.updatePod(&prev, pod)
 	fakeWorker(ssc)
@@ -677,8 +683,15 @@ func scaleDownStatefulSetController(set *apps.StatefulSet, ssc *StatefulSetContr
 	fakeWorker(ssc)
 	for set.Status.Replicas > *set.Spec.Replicas {
 		pods, err = spc.podsLister.Pods(set.Namespace).List(selector)
+		if err != nil {
+			return err
+		}
+
 		ord := len(pods)
 		pods, err = spc.addTerminatingPod(set, ord)
+		if err != nil {
+			return err
+		}
 		pod = getPodAtOrdinal(pods, ord)
 		ssc.updatePod(&prev, pod)
 		fakeWorker(ssc)