assertThat(requirements.getAbsentFeatures()).isEmpty();
  }

  public void testBuildTesterRequirements_class_empty() throws Exception {
    @Require
    class Tester {}

    TesterRequirements requirements = buildTesterRequirements(Tester.class);

    assertThat(requirements.getPresentFeatures()).isEmpty();
    assertThat(requirements.getAbsentFeatures()).isEmpty();
  }

      }
      return false;
    }
    if (intersect(features, requirements.getAbsentFeatures())) {
      if (logger.isLoggable(FINER)) {
        Set<Feature<?>> unwantedFeatures = copyToSet(requirements.getAbsentFeatures());
        unwantedFeatures.retainAll(features);
        logger.finer(
            Platform.format(

    Set<Feature<?>> presentFeatures = requirements.getPresentFeatures();
    Set<Feature<?>> absentFeatures = requirements.getAbsentFeatures();
    Set<Feature<?>> morePresentFeatures = moreRequirements.getPresentFeatures();
    Set<Feature<?>> moreAbsentFeatures = moreRequirements.getAbsentFeatures();
    checkConflict("absent", absentFeatures, "present", morePresentFeatures, source);

    Set<Feature<?>> presentFeatures = requirements.getPresentFeatures();
    Set<Feature<?>> absentFeatures = requirements.getAbsentFeatures();
    Set<Feature<?>> morePresentFeatures = moreRequirements.getPresentFeatures();
    Set<Feature<?>> moreAbsentFeatures = moreRequirements.getAbsentFeatures();
    checkConflict("absent", absentFeatures, "present", morePresentFeatures, source);