ResponseNonce:            nonce,
			ResourceNamesSubscribe:   add,
			ResourceNamesUnsubscribe: remove,
		})
		nonce = res.Nonce
		got := xdstest.MapKeys(xdstest.ExtractLoadAssignments(xdstest.UnmarshalClusterLoadAssignment(t, xdsserver.ResourcesToAny(res.Resources))))
		if !reflect.DeepEqual(expect, got) {
			t.Fatalf("expected clusters %v got %v", expect, got)
		}
	}

				t.Errorf("expected clusters: %v, got: %v", xdstest.MapKeys(tt.clusters), got)
			}

			for cname, c := range cmap {
				// Check the upstream endpoints match
				got := xdstest.ExtractLoadAssignments([]*endpoint.ClusterLoadAssignment{c.GetLoadAssignment()})[cname]
				if !reflect.DeepEqual(tt.clusters[cname], got) {
					t.Errorf("%v: expected endpoints %v, got %v", cname, tt.clusters[cname], got)
				}