}
@Test
public void testGetAllStoppedOnGracefulShutdown() throws Exception {
final Periodical periodical2 = mock(Periodical.class);
when(periodical2.stopOnGracefulShutdown()).thenReturn(true);
periodicals.registerAndStart(periodical);
periodicals.registerAndStart(periodical2);
List<Periodical> allStoppedOnGracefulShutdown = periodicals.getAllStoppedOnGracefulShutdown();