@Test public void doNotCrash_NoopImplementation() throws Exception { SpanBuilder spanBuilder = tracer.spanBuilder("MySpanName"); spanBuilder.setParentLinks(Collections.<Span>emptyList()); spanBuilder.setRecordEvents(true); spanBuilder.setSampler(Samplers.alwaysSample()); spanBuilder.setSpanKind(Kind.SERVER); assertThat(spanBuilder.startSpan()).isSameAs(BlankSpan.INSTANCE); } }