func TestNamedPolymorphic(t *testing.T) {
	DB.Migrator().DropTable(&Hamster{})
	DB.AutoMigrate(&Hamster{})

	hamster := Hamster{Name: "Mr. Hammond", PreferredToy: Toy{Name: "bike"}, OtherToy: Toy{Name: "treadmill"}}
	DB.Save(&hamster)

	hamster2 := Hamster{}
	DB.Preload("PreferredToy").Preload("OtherToy").Find(&hamster2, hamster.Id)

			}
		})
	}
}

func TestParquetInput(t *testing.T) {
	saved := parquetSupport
	defer func() {
		parquetSupport = saved
	}()
	parquetSupport = true

	testTable := []struct {
		requestXML     []byte
		expectedResult []byte
	}{
		{
			[]byte(`

			return oi, PartTooSmall{
				PartNumber: part.PartNumber,
				PartSize:   expPart.ActualSize,
				PartETag:   part.ETag,
			}
		}

		// Save for total object size.
		objectSize += expPart.Size

		// Save the consolidated actual size.
		objectActualSize += expPart.ActualSize

		// Add incoming parts.
		fi.Parts[i] = ObjectPartInfo{
			Number:     part.PartNumber,

    }
  }

  private static boolean equal(@Nullable Object a, @Nullable Object b) {
    return a == b || (a != null && a.equals(b));
  }

  // This one-liner saves us from some ugly casts
  protected Entry<K, V> entry(K key, V value) {
    return mapEntry(key, value);
  }

  @Override
  protected void expectContents(Collection<Entry<K, V>> expected) {

    return (float) get();
  }

  /** Returns the value of this {@code AtomicDouble} as a {@code double}. */
  @Override
  public double doubleValue() {
    return get();
  }

  /**
   * Saves the state to a stream (that is, serializes it).
   *
   * @serialData The current value is emitted (a {@code double}).
   */
  private void writeObject(ObjectOutputStream s) throws IOException {

            "input": "plumbus",
        }
    ]
}
```

## 停用底線轉換 { #disable-convert-underscores }

與一般標頭參數相同，當參數名稱包含底線字元時，會自動轉換為連字號。

例如，若在程式碼中有標頭參數 `save_data`，實際期望的 HTTP 標頭為 `save-data`，在文件中也會如此顯示。

如果因某些原因需要停用這個自動轉換，你也可以在標頭參數的 Pydantic 模型上設定。

{* ../../docs_src/header_param_models/tutorial003_an_py310.py hl[19] *}

/// warning | 警告

     *
     * @throws IOException if `protocol` is unknown.
     */
    @JvmStatic
    @Throws(IOException::class)
    fun get(protocol: String): Protocol {
      // Unroll the loop over values() to save an allocation.
      @Suppress("DEPRECATION")
      return when (protocol) {
        HTTP_1_0.protocol -> {
          HTTP_1_0
        }

        HTTP_1_1.protocol -> {
          HTTP_1_1
        }

   * of the same class. For example, if sublists of {@code MyList} instances were serializable,
   * those sublists might implement a private {@code MySubList} type but serialize as a plain {@code
   * MyList} to save space. So long as {@code MyList} has all the public supertypes of {@code
   * MySubList}, this is safe. For these cases, for which {@code reserializeAndAssert} is too
   * strict, use {@link #reserialize}.
   *

/// info

Un token « bearer » n'est pas la seule option.

Mais c'est la meilleure pour notre cas d'utilisation.

Et cela pourrait être la meilleure pour la plupart des cas, sauf si vous êtes expert en OAuth2 et savez exactement pourquoi une autre option convient mieux à vos besoins.

Dans ce cas, **FastAPI** vous fournit aussi les outils pour la construire.

///

  // Notifies about the function removal.
  virtual absl::Status AddRemoveFunctionNotifier(
      const string& func, std::function<void()> notifier) = 0;

  // Same as `AddFunctionDef`, but additionally saves the `stack_traces` under
  // the key of the function definition name (to be retrieved during function
  // instantiation).
  virtual absl::Status AddFunctionDefWithStackTraces(