c := xdstest.ExtractCluster("outbound|8080|foobar|foo.example.org", buildTestClustersWithTCPKeepalive(t, tt.rule))
			if diff := cmp.Diff(c.GetUpstreamConnectionOptions().GetTcpKeepalive(), tt.keepalive, protocmp.Transform()); diff != "" {
				t.Fatalf("got diff: %v", diff)
			}
		})
	}
}

func buildTestClustersWithTCPKeepalive(t testing.TB, configType ConfigType) []*cluster.Cluster {
	// Set mesh wide defaults.