### Question:
PopulationManager implements PopulationDAO { @Override public List<Population> listPopulations() { return Collections.unmodifiableList(watcher.getParsedData()); }  @PostConstruct void init(); @Override Population save(Population population); @Override void delete(Population population); @Override Population findByName(String populationName); @Override Population getDefaultPopulation(); @Override List<Population> listPopulations();  }### Answer:
@Test public void testListPopulations() { List<Population> popList = popDao.listPopulations(); assertTrue(popList.size() > 0); }