// addrTypePortMapKey values.
func endpointSlicesByKey(existingSlices []*discovery.EndpointSlice) map[addrTypePortMapKey][]*discovery.EndpointSlice {
	slicesByKey := map[addrTypePortMapKey][]*discovery.EndpointSlice{}
	for _, existingSlice := range existingSlices {
		epKey := newAddrTypePortMapKey(existingSlice.Ports, existingSlice.AddressType)
		slicesByKey[epKey] = append(slicesByKey[epKey], existingSlice)
	}
	return slicesByKey
}

	}
	return fetchedSlices.Items
}

func reconcileHelper(t *testing.T, r *reconciler, endpoints *corev1.Endpoints, existingSlices []*discovery.EndpointSlice) {
	t.Helper()
	logger, _ := ktesting.NewTestContext(t)
	err := r.reconcile(logger, endpoints, existingSlices)
	if err != nil {
		t.Fatalf("Expected no error reconciling Endpoint Slices, got: %v", err)
	}
}

// Metrics helpers