### Question:
DefaultStageService implements StageService { @Override public StageStatus getLatestStatus() { Preferences node = Preferences.userRoot().node(STAGE_PATH); try { String statusString = node.get(STAGE_STATUS_KEY, ""); if (isNotBlank(statusString)) { return JSON.std.beanFrom(StageStatus.class, statusString); } } catch (IOException e) { LOG.error("Unable to get latest stage status", e); } return StageStatus.NULL; }  @Override void save(StageStatus status); @Override StageStatus getLatestStatus(); @Override void clear();  }### Answer:
@Test public void nullLatest() { assertEquals(StageStatus.NULL, victim.getLatestStatus()); }