Sebastián Ramírez <******@****.***> 1731896744 +0100

        }
    }

    protected static class Clock {
        Instant start;
        Instant end;
        Instant resumed;
        Duration exec = Duration.ZERO;

        protected void start() {
            if (start == null) {
                start = MonotonicClock.now();
                resumed = start;
            } else {
                resumed = MonotonicClock.now();
            }

{* ../../docs_src/query_params_str_validations/tutorial004_an_py310.py hl[11] *}

This specific regular expression pattern checks that the received parameter value:

* `^`: starts with the following characters, doesn't have characters before.
* `fixedquery`: has the exact value `fixedquery`.
* `$`: ends there, doesn't have any more characters after `fixedquery`.

          }
        }
      }

      val startNs = System.nanoTime()
      val response: Response
      try {
        response = chain.proceed(request)
      } catch (e: Exception) {
        val tookMs = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startNs)
        logger.log(
          buildString {
            append("<-- HTTP FAILED: $e.")

    log(task, queue, messageBlock())
  }
}

internal inline fun <T> Logger.logElapsed(
  task: Task,
  queue: TaskQueue,
  block: () -> T,
): T {
  var startNs = -1L
  val loggingEnabled = isLoggable(Level.FINE)
  if (loggingEnabled) {
    startNs = queue.taskRunner.backend.nanoTime()
    log(task, queue, "starting")
  }

  var completedNormally = false
  try {
    val result = block()

from fastapi.testclient import TestClient

app = FastAPI()
state = {
    "/async": "asyncgen not started",
    "/sync": "generator not started",
    "/async_raise": "asyncgen raise not started",
    "/sync_raise": "generator raise not started",
    "context_a": "not started a",
    "context_b": "not started b",
    "bg": "not set",
    "sync_bg": "not set",
}

errors = []


async def get_state():

        // Shutdown scheduler
        scheduler.shutdown();

        // Close RPC client
        if (rpcClient != null) {
            rpcClient.close();
        }
    }

    /**
     * Starts asynchronous notification monitoring for a registration.
     *
     * @param registration the witness registration
     */
    private void startAsyncNotificationMonitoring(WitnessRegistration registration) {

```console
$ uvicorn main:app --reload

INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     Started reloader process [28720]
INFO:     Started server process [28722]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
```

</div>

<details markdown="1">
<summary>关于 <code>uvicorn main:app --reload</code> 命令......</summary>

	if err != nil {
		b.Fatal(err)
	}

	// benchmark utility which helps obtain number of allocations and bytes allocated per ops.
	b.ReportAllocs()
	// the actual benchmark for PutObject starts here. Reset the benchmark timer.
	b.ResetTimer()

	if err := req.ParseForm(); err != nil {
		b.Fatal(err)
	}

	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			req.Form.Get("uploadId")
		}
	})

# Testing Events: lifespan and startup - shutdown { #testing-events-lifespan-and-startup-shutdown }

When you need `lifespan` to run in your tests, you can use the `TestClient` with a `with` statement:

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


You can read more details about the ["Running lifespan in tests in the official Starlette documentation site."](https://www.starlette.dev/lifespan/#running-lifespan-in-tests)