assertEquals(State.TERMINATED, service.state());

      assertTrue(currentThread().isInterrupted());
    } finally {
      Thread.interrupted(); // clear interrupt for future tests
    }
  }

  private static class NoOpService extends AbstractService {
    boolean running = false;

    @Override
    protected void doStart() {
      assertFalse(running);
      running = true;

      assertEquals(State.TERMINATED, service.state());

      assertTrue(currentThread().isInterrupted());
    } finally {
      Thread.interrupted(); // clear interrupt for future tests
    }
  }

  private static class NoOpService extends AbstractService {
    boolean running = false;

    @Override
    protected void doStart() {
      assertFalse(running);
      running = true;

import com.google.common.collect.ImmutableSet;
import org.jspecify.annotations.NullUnmarked;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/**
 * Tests for {@link Graphs}. Tests assume that the implementation of the method {@code addEdge} adds
 * the missing nodes to the graph, then adds the edge between them.
 */
@RunWith(JUnit4.class)
@NullUnmarked
public class GraphsTest {

import java.math.BigInteger;
import java.math.RoundingMode;
import java.util.EnumSet;
import java.util.Random;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests for LongMath.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@NullUnmarked
public class LongMathTest extends TestCase {
  @SuppressWarnings("ConstantOverflow")
  public void testMaxSignedPowerOfTwo() {

 * ...
 * }
 *
 * <h3>Views</h3>
 *
 * <p>Much of the power of the multimap API comes from the <i>view collections</i> it provides.
 * These always reflect the latest state of the multimap itself. When they support modification, the
 * changes are <i>write-through</i> (they automatically update the backing multimap). These view
 * collections are:
 *
 * <ul>

この部分はとても普通で、ほとんどのコードはすでに見覚えがあるはずです:

{* ../../docs_src/openapi_callbacks/tutorial001_py310.py hl[7:11,34:51] *}

/// tip | 豆知識

`callback_url` クエリパラメータは、Pydantic の [Url](https://docs.pydantic.dev/latest/api/networks/) 型を使用します。

///

唯一の新しい点は、*path operation デコレータ*の引数として `callbacks=invoices_callback_router.routes` を渡すことです。これが何かは次で見ます。

## コールバックのドキュメント化 { #documenting-the-callback }

重要的是，通过使用标准的 Python 类型，而且只在一个地方声明（而不是添加更多类、装饰器等），**FastAPI** 会为你完成大量工作。

/// info | 信息

如果你已经读完所有教程，又回来想进一步了解类型，一个不错的资源是 [`mypy` 的“速查表”](https://mypy.readthedocs.io/en/latest/cheat_sheet_py3.html)。

import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;

import io.restassured.RestAssured;
import io.restassured.path.json.JsonPath;
import io.restassured.response.Response;

/**
 * Integration tests for the Favorites API (/api/v1/favorites and /api/v1/documents/{docId}/favorite)
 * This test requires crawled documents and favorites feature to be properly configured
 */
@Tag("it")

  val request3 = server.takeRequest()
  assertEquals("/v1/chat/messages/3", request3.url.encodedPath)

  // Shut down the server. Instances cannot be reused.
  server.close()
}
```

Your unit tests might move the `server` into a field so you can shut it down
from your test's `tearDown()`.

### API

#### MockResponse

Mock responses default to an empty response body and a `200` status code.

      fail<Any>()
    } catch (ioe: IOException) {
      assertThat(ioe).hasMessage("google.com")
      assertThat(ioe.cause!!).isInstanceOf<EOFException>()
    }
  }

  // TODO GET preferred order - with tests to confirm this
  // 1. successful fresh cached GET response
  // 2. unsuccessful (404, 500) fresh cached GET response
  // 3. successful network response
  // 4. successful stale cached GET response