if e.expectedError != nil {
		return e.expectedError
	}
	_, err := w.Write([]byte(e.expectedResult))
	return err
}

func TestCachingObject(t *testing.T) {
	object, err := newCachingObject(&v1.Pod{})
	if err != nil {
		t.Fatalf("couldn't create cachingObject: %v", err)
	}

	encoders := []*mockEncoder{
		newMockEncoder("1", "result1", nil),
		newMockEncoder("2", "", fmt.Errorf("mock error")),

	// The atomic.Value type is used to allow fast-path.
	serializations atomic.Value
}

// newCachingObject performs a deep copy of the given object and wraps it
// into a cachingObject.
// An error is returned if it's not possible to cast the object to
// metav1.Object type.
func newCachingObject(object runtime.Object) (*cachingObject, error) {
	if obj, ok := object.(metaRuntimeInterface); ok {
		result := &cachingObject{

		// This is rare enough that it doesn't justify making deep-copy of the
		// object (done by newCachingObject) every time.
	case watch.Deleted:
		// Don't wrap Object for delete events - these are not to deliver any
		// events. Only wrap PrevObject.
		if object, err := newCachingObject(event.PrevObject); err == nil {
			// Update resource version of the object.