code: @Test public void shouldNotFailWhenASingleProviderFails(){
    victim=new ConfigurableLocatorFactory(){
      @Override protected ProviderFinder<LocatorProvider> getProviderFinder(){
        return mockProviderFinder;
      }
    }
  ;
    final List<LocatorProvider> providers=new ArrayList<LocatorProvider>();
    providers.add(new LocatorProvider(){
      public Map<String,UriLocator> provideLocators(){
        throw new IllegalStateException("Unexpected BOOM!");
      }
    }
  );
    when(mockProviderFinder.find()).thenReturn(providers);
    assertTrue(victim.getAvailableStrategies().isEmpty());
  }
  