<ExpressionType>SQL</ExpressionType>
    <InputSerialization>
        <CompressionType>NONE</CompressionType>
        <JSON>
            <Type>DOCUMENT</Type>
        </JSON>
    </InputSerialization>
    <OutputSerialization>
        <JSON>
        </JSON>
    </OutputSerialization>
    <RequestProgress>
        <Enabled>FALSE</Enabled>
    </RequestProgress>
</SelectObjectContentRequest>`),

)


client = TestClient(app)

json_type = "application/json"
text_type = "text/plain; charset=utf-8"
html_type = "text/html; charset=utf-8"
override_type = "application/x-override"


def test_app():
    with client:
        response = client.get("/")
    assert response.json() == {"msg": "Hello World"}
    assert response.headers["content-type"] == json_type

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image02.png">
</div>

This means that it will **always have a value**, it's just that sometimes the value could be `None` (or `null` in JSON).

package logger_test

import (
	"database/sql/driver"
	"encoding/json"
	"fmt"
	"regexp"
	"strings"
	"testing"

	"github.com/jinzhu/now"
	"gorm.io/gorm/logger"
)

type JSON json.RawMessage

func (j JSON) Value() (driver.Value, error) {
	if len(j) == 0 {
		return nil, nil
	}
	return json.RawMessage(j).MarshalJSON()
}

type ExampleStruct struct {
	Name string
	Val  string
}

		newCfg, err := readServerConfig(GlobalContext, objAPI, data)
		if err == nil {
			return newCfg, nil
		}

		// Read older `.minio.sys/config/config.json`, if not
		// possible just fail.
		if err = json.Unmarshal(data, cfg); err != nil {
			// Unable to parse old JSON simply re-initialize a new one.
			return newServerCfg()
		}
	}

	if !globalCredViaEnv && cfg.Credential.IsValid() {

## Attributes with lists of submodels { #attributes-with-lists-of-submodels }

You can also use Pydantic models as subtypes of `list`, `set`, etc.:

{* ../../docs_src/body_nested_models/tutorial006_py310.py hl[18] *}

This will expect (convert, validate, document, etc.) a JSON body like:

```JSON hl_lines="11"
{
    "name": "Foo",

Такая реализация будет ожидать (конвертировать, валидировать, документировать и т.д.) JSON-содержимое в следующем формате:

```JSON hl_lines="11"
{
    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2,
    "tags": [
        "rock",
        "metal",
        "bar"
    ],
    "images": [
        {

    return client


def test_get(client: TestClient):
    response = client.get("/")
    assert response.json() == {"message": "Not timed"}
    assert "X-Response-Time" not in response.headers


def test_get_timed(client: TestClient):
    response = client.get("/timed")
    assert response.json() == {"message": "It's the time of my life"}
    assert "X-Response-Time" in response.headers

// The result will be compared with the result obtained from json.unMarshal of the byte data.
func TestGetXLMetaV1Jsoniter1(t *testing.T) {
	xlMetaJSON := getXLMetaBytes(1)

	var unMarshalXLMeta xlMetaV1Object
	if err := json.Unmarshal(xlMetaJSON, &unMarshalXLMeta); err != nil {
		t.Errorf("Unmarshalling failed: %v", err)
	}

	var jsoniterXLMeta xlMetaV1Object
	json := jsoniter.ConfigCompatibleWithStandardLibrary

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


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


def test_fastapi_error(mod: ModuleType):
    client = TestClient(mod.app)