}
		updated, err := history.UpdateControllerRevision(test.revision, test.newRevision)
		if !test.err && err != nil {
			t.Errorf("%s: %s", test.name, err)
		}
		if !test.err && updated.Revision != test.newRevision {
			t.Errorf("%s: got %d want %d", test.name, updated.Revision, test.newRevision)
		}
		if test.err && err == nil {
			t.Errorf("%s: expected error", test.name)
		}
	}

	set.Status.CollisionCount = new(int32)
	currentSet := set.DeepCopy()
	currentRevision, err := newRevision(set, 1, set.Status.CollisionCount)
	if err != nil {
		t.Fatal(err)
	}

	set.Spec.Template.Spec.Containers[0].Env = []v1.EnvVar{{Name: "foo", Value: "bar"}}
	updateSet := set.DeepCopy()
	updateRevision, err := newRevision(set, 2, set.Status.CollisionCount)
	if err != nil {
		t.Fatal(err)
	}