# Events testen: Lifespan und Startup – Shutdown { #testing-events-lifespan-and-startup-shutdown }

Wenn Sie `lifespan` in Ihren Tests ausführen müssen, können Sie den `TestClient` mit einer `with`-Anweisung verwenden:

{* ../../docs_src/app_testing/tutorial004_py39.py hl[9:15,18,27:28,30:32,41:43] *}

配置**启动**和**关闭**事件的推荐方法是使用 `FastAPI()` 应用的 `lifespan` 参数，如前所示。如果你提供了一个 `lifespan` 参数，启动（`startup`）和关闭（`shutdown`）事件处理器将不再生效。要么使用 `lifespan`，要么配置所有事件，两者不能共用。

你可以跳过这一部分。

///

有一种替代方法可以定义在**启动**和**关闭**期间执行的逻辑。

**FastAPI** 支持定义在应用启动前，或应用关闭时执行的事件处理器（函数）。

事件函数既可以声明为异步函数（`async def`），也可以声明为普通函数（`def`）。

### `startup` 事件

使用 `startup` 事件声明 `app` 启动前运行的函数：

{* ../../docs_src/events/tutorial001.py hl[8] *}

  public void testStart_failed() {
    Exception exception = new Exception("deliberate");
    TestService service =
        new TestService() {
          @Override
          protected void startUp() throws Exception {
            super.startUp();
            throw exception;
          }
        };
    assertEquals(0, service.startUpCalled);
    RuntimeException e =

    }
    assertThat(taskFaker.executeCallCount).isEqualTo(1)

    // Running the red task starts another thread, so the two can run in parallel.
    taskFaker.runNextTask()
    assertThat(log).containsExactly("red:starting@0")
    assertThat(taskFaker.executeCallCount).isEqualTo(2)

    // Next the blue task starts.
    taskFaker.runNextTask()
    assertThat(log).containsExactly(
      "red:starting@0",

				return
			}
		case "User":
			z.User, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "User")
				return
			}
		case "Started":
			z.Started, err = dc.ReadTime()
			if err != nil {
				err = msgp.WrapError(err, "Started")
				return
			}
		case "Replicate":
			if dc.IsNil() {
				err = dc.ReadNil()
				if err != nil {
					err = msgp.WrapError(err, "Replicate")

        @SuppressWarnings("unchecked")
        final Map<String, StateData> states = (Map<String, StateData>) session.getAttribute(STATES);
        if (states != null) {
            final long now = ComponentUtil.getSystemHelper().getCurrentTimeAsLong();
            states.entrySet()
                    .stream()

x-minio-common: &minio-common
  image: minio/minio:${MINIO_VERSION}
  command: server http://minio{1...4}/data{1...3}
  env_file:
    - ./minio.env
  expose:
    - "9000"
    - "9001"

# starts 4 docker containers running minio server instances.
# using nginx reverse proxy, load balancing, you can access
# it through port 9000.
services:
  minio1:
    <<: *minio-common
    hostname: minio1
    volumes:

  # environment:
    # MINIO_ROOT_USER: minioadmin
    # MINIO_ROOT_PASSWORD: minioadmin
  healthcheck:
    test: ["CMD", "mc", "ready", "local"]
    interval: 5s
    timeout: 5s
    retries: 5

# starts 4 docker containers running minio server instances.
# using nginx reverse proxy, load balancing, you can access
# it through port 9000.
services:
  minio1:
    <<: *minio-common
    hostname: minio1
    volumes:

				ss.HealPriority = "high"
				status.HealDisks = append(status.HealDisks, disk.Endpoint)
			}
		}
		sortDisks(ss.Disks)
		status.Sets = append(status.Sets, ss)
	}
	sort.Slice(status.Sets, func(i, j int) bool {
		return status.Sets[i].ID < status.Sets[j].ID
	})

	backendInfo := o.BackendInfo()
	status.SCParity = make(map[string]int)
	status.SCParity[storageclass.STANDARD] = backendInfo.StandardSCParity

* «the return value»: «der Rückgabewert»
* «the startup» (the event of the app): «der Startup»
* «the shutdown» (the event of the app): «der Shutdown»
* «the startup event»: «das Startup-Event»
* «the shutdown event»: «das Shutdown-Event»
* «the startup» (of the server): «das Hochfahren»
* «the startup» (the company): «das Startup»
* «the SDK»: «das SDK»
* «the tag»: «der Tag»