response = client.get("/items/foo")
    assert response.status_code == 404, response.text
    assert response.json() == {"detail": "Item not found, there's only a plumbus here"}


def test_get(client: TestClient):
    response = client.get("/items/plumbus")
    assert response.status_code == 200, response.text
    assert response.json() == "plumbus"


def test_fastapi_error(client: TestClient):

İç içe geçen derin modelleri pek iyi işleyemiyor. Yani eğer istekteki JSON gövdesi derin bir JSON objesiyse düzgün bir şekilde dökümante edilip doğrulanamıyor.

/// check | "**FastAPI**'a nasıl ilham oldu?"

Güzel bir editör desteği için Python tiplerini kullanmalı.

	return iamOS.usersSysType
}

func (iamOS *IAMObjectStore) saveIAMConfig(ctx context.Context, item interface{}, objPath string, opts ...options) error {
	json := jsoniter.ConfigCompatibleWithStandardLibrary
	data, err := json.Marshal(item)
	if err != nil {
		return err
	}
	if GlobalKMS != nil {
		data, err = config.EncryptBytes(GlobalKMS, data, kms.Context{

# レスポンスを直接返す

**FastAPI** の *path operation* では、通常は任意のデータを返すことができます: 例えば、 `dict`、`list`、Pydanticモデル、データベースモデルなどです。

デフォルトでは、**FastAPI** は [JSON互換エンコーダ](../tutorial/encoder.md){.internal-link target=_blank} で説明されている `jsonable_encoder` により、返す値を自動的にJSONに変換します。

このとき背後では、JSON互換なデータ (例えば`dict`) を、クライアントへ送信されるレスポンスとして利用される `JSONResponse` の中に含めます。

しかし、*path operation* から `JSONResponse` を直接返すこともできます。

これは例えば、カスタムヘッダーやcookieを返すときに便利です。

## `Response` を返す

    response = client.get("/items/foo")
    assert response.status_code == 404, response.text
    assert response.json() == {"detail": "Item not found, there's only a plumbus here"}


def test_get(client: TestClient):
    response = client.get("/items/plumbus")
    assert response.status_code == 200, response.text
    assert response.json() == "plumbus"


def test_internal_error(client: TestClient):

import okio.Path.Companion.toPath
import okio.buffer
import okio.fakefilesystem.FakeFileSystem

class PostPath {
  private val client = OkHttpClient()
  private val fileSystem = FakeFileSystem()
  val path = "test.json".toPath()

  fun run() {
    fileSystem.write(path) {
      writeUtf8("{}")
    }

    val request =
      Request.Builder()
        .url("https://httpbin.org/anything")

// Config represents the subnet related configuration
type Config struct {
	// The subnet license token - Deprecated Dec 2021
	License string `json:"license"`

	// The subnet api key
	APIKey string `json:"apiKey"`

	// The HTTP(S) proxy URL to use for connecting to SUBNET
	Proxy string `json:"proxy"`

	// Transport configured with proxy_url if set optionally.
	transport http.RoundTripper

	// The subnet base URL
	BaseURL string

func errObjectSerializationConflict(err error) *s3Error {
	return &s3Error{
		code:       "ObjectSerializationConflict",
		message:    "InputSerialization specifies more than one format (CSV, JSON, or Parquet), or OutputSerialization specifies more than one format (CSV or JSON). InputSerialization and OutputSerialization can only specify one format each.",
		statusCode: 400,
		cause:      err,
	}
}

func errInvalidExpressionType(err error) *s3Error {

* In der OpenAPI *Pfadoperation* ein **JSON-Schema** für die Response hinzuzufügen.
    * Dieses wird von der **automatischen Dokumentation** verwendet.
    * Es wird auch von automatisch Client-Code-generierenden Tools verwendet.

Aber am wichtigsten:

* Tự động tài liệu hóa data model theo <a href="https://json-schema.org/" class="external-link" target="_blank"><strong>JSON Schema</strong></a> (OpenAPI bản thân nó được dựa trên JSON Schema).
* Được thiết kế xung quanh các tiêu chuẩn này sau khi nghiên cứu tỉ mỉ thay vì chỉ suy nghĩ đơn giản và sơ xài.