@Test public void localEndpointDefaults() {

  Tracing tracing = Tracing.newBuilder().build();
  assertThat(tracing).extracting("tracer.pendingSpans.defaultSpan.localServiceName")
    .isEqualTo("unknown");
  assertThat(tracing).extracting("tracer.pendingSpans.defaultSpan.localIp")
    .isEqualTo(Platform.get().linkLocalIp());
}