@Test protected void getServiceNames_isEmpty(TestInfo testInfo) throws Exception {
    String testSuffix = testSuffix(testInfo);
    accept(spanBuilder(testSuffix).build());

    assertThat(names().getServiceNames().execute()).isEmpty();
  }
Base test for when {@link StorageComponent.Builder#searchEnabled(boolean) searchEnabled ==
false}.

<p>Subtypes should create a connection to a real backend, even if that backend is in-process.
zipkin-tests/src/main/java/zipkin2/storage/ITSearchEnabledFalse.java