### Question:
DiscoveryHelperFactory implements DiscoveryHelper { @Override public void onCreate() { discoveryHelper.onCreate(); } DiscoveryHelperFactory(); protected  DiscoveryHelperFactory(DiscoveryHelper discoveryHelper); static DiscoveryHelper provider(); @Override NodeInfo buildCurrent(); @Override void onCreate();  }### Answer:
@Test public void onCreate() { discoveryHelperFactory.onCreate(); verify(discoveryHelper).onCreate(); }