@Test protected void getTraces_maxDuration(TestInfo testInfo) throws Exception {
    String testSuffix = testSuffix(testInfo);
    Span clientSpan = newClientSpan(testSuffix);

    accept(clientSpan);

    assertGetTracesReturnsEmpty(
      requestBuilder()
        .minDuration(clientSpan.durationAsLong() - 2)
        .maxDuration(clientSpan.durationAsLong() - 1)
        .build());

    assertGetTracesReturns(
      requestBuilder()
        .minDuration(clientSpan.durationAsLong())
        .maxDuration(clientSpan.durationAsLong())
        .build(),
      List.of(clientSpan));
  }
This is unlikely and means instrumentation sends empty spans by mistake.
zipkin-tests/src/main/java/zipkin2/storage/ITSpanStore.java