service.startAsync().awaitRunning();
    assertEquals(State.RUNNING, service.state());

    service.stopAsync();
    service.stopAsync();
    assertEquals(State.TERMINATED, service.state());
    assertEquals(
        ImmutableList.of(State.STARTING, State.RUNNING, State.STOPPING, State.TERMINATED),
        listener.getStateHistory());
  }

    service.startAsync().awaitRunning();
    assertEquals(State.RUNNING, service.state());

    service.stopAsync();
    service.stopAsync();
    assertEquals(State.TERMINATED, service.state());
    assertEquals(
        ImmutableList.of(State.STARTING, State.RUNNING, State.STOPPING, State.TERMINATED),
        listener.getStateHistory());
  }

    if (!expression) {
      throw new IllegalArgumentException(lenientFormat(errorMessageTemplate, p1, p2, p3, p4));
    }
  }

  /**
   * Ensures the truth of an expression involving the state of the calling instance, but not
   * involving any parameters to the calling method.
   *
   * @param expression a boolean expression
   * @throws IllegalStateException if {@code expression} is false

      startUpCalled++;
      assertEquals(State.STARTING, state());
    }

    @Override
    protected void shutDown() throws Exception {
      assertEquals(1, startUpCalled);
      assertEquals(0, shutDownCalled);
      shutDownCalled++;
      assertEquals(State.STOPPING, state());
    }

    @Override
    protected Executor executor() {
      transitionStates.add(state());
      return directExecutor();
    }

    assertEquals(Service.State.RUNNING, service.state());

    exitRun.countDown(); // the service will exit voluntarily
    executionThread.join();

    assertTrue(service.shutDownCalled);
    assertEquals(Service.State.TERMINATED, service.state());

    service.stopAsync().awaitTerminated(); // no-op
    assertEquals(Service.State.TERMINATED, service.state());
    assertTrue(service.shutDownCalled);
  }

     * 4. We expect the client thread's interrupt state to be false.
     * 5. The client thread again makes a blocking call to get().
     * 6. Now the result becomes available.
     * 7. We expect get() to return this result.
     * 8. We expect the test thread's interrupt state to be false.
     */
    InterruptionUtil.requestInterruptIn(200, TimeUnit.MILLISECONDS);

    return Collector.of(
        ImmutableTableCollectorState<R, C, V>::new,
        (state, input) ->
            state.put(
                rowFunction.apply(input),
                columnFunction.apply(input),
                valueFunction.apply(input),
                mergeFunction),
        (s1, s2) -> s1.combine(s2, mergeFunction),
        state -> state.toTable());
  }

  static <
          T extends @Nullable Object,

     * the lock to check again. Since an IDLE state was observed inside the preceding synchronized
     * block, and reference field assignment is atomic, this may save reacquiring the lock when
     * another thread or the worker task has cleared the count and set the state.
     *
     * <p>When {@link #executor} is a directExecutor(), the value written to

    super.tearDown();
  }

  public void testListenerDoesNotRunUntilTaskCompletes() throws Exception {

    // Test default state of not started.
    assertEquals(1, listenerLatch.getCount());
    assertFalse(task.isDone());
    assertFalse(task.isCancelled());

    // Start the task to put it in the RUNNING state.  Have to use a separate
    // thread because the task will block on the task latch after unblocking
    // the run latch.

    /**
     * Evaluates this guard's boolean condition. This method is always called with the associated
     * monitor already occupied. Implementations of this method must depend only on state protected
     * by the associated monitor, and must not modify that state.
     */
    public abstract boolean isSatisfied();
  }

  /** Whether this monitor is fair. */
  private final boolean fair;