@Test
public void testIsTerminated() throws Exception {

    ExecutorService executor = Mockito.mock(ExecutorService.class);
    when(executor.isTerminated()).thenReturn(true);
    assertThat(ExecutorUtil.isTerminated(executor), is(true));
    Executor executor2 = Mockito.mock(Executor.class);
    assertThat(ExecutorUtil.isTerminated(executor2), is(false));
}