### Question:
JedisPoolManager implements Managed { @Override public void start() throws Exception { } JedisPoolManager(JedisPool pool); @Override void start(); @Override void stop();  }### Answer:
@Test public void doesNothingOnStart() throws Exception { JedisPool pool = mock(JedisPool.class); new JedisPoolManager(pool).start(); verifyZeroInteractions(pool); }