}

    /**
     * Creates a new CurlRequest with the HTTP POST method for the specified URL.
     *
     * @param url the URL to which the POST request will be sent
     * @return a new CurlRequest object configured with the POST method and the specified URL
     */
    public static CurlRequest post(final String url) {
        return new CurlRequest(Method.POST, url);
    }

    /**

```java
import org.codelibs.curl.Curl;

Curl.post("https://api.example.com/items")
    .body("{\"name\":\"item1\"}")
    .header("Content-Type", "application/json")
    .execute(
        response -> System.out.println("Async status: " + response.getHttpStatusCode()),
        error -> error.printStackTrace());
```

## API Overview

- `org.codelibs.curl.Curl`: entry point for HTTP methods (GET, POST, PUT, DELETE, HEAD, OPTIONS, CONNECT, TRACE).

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class Item(BaseModel):
    name: Optional[str] = None


class ExtendedItem(Item):
    age: int


@app.post("/items/")
def save_union_different_body(item: Union[ExtendedItem, Item]):
    return {"item": item}


client = TestClient(app)


def test_post_extended_item():
    response = client.post("/items/", json={"name": "Foo", "age": 5})
    assert response.status_code == 200, response.text

    return mod.app


@pytest.fixture(name="client")
def get_client(app: FastAPI):
    client = TestClient(app)
    return client


def test_post_form_no_body(client: TestClient):
    response = client.post("/files/")
    assert response.status_code == 422, response.text
    assert response.json() == {
        "detail": [
            {
                "type": "missing",
                "loc": ["body", "files"],

def test_required_nonable_body_embed_no_content():
    response = client.post("/body-embed")
    assert response.status_code == 422


def test_required_nonable_body_embed_invalid():
    response = client.post("/body-embed", json={"invalid": "invalid"})
    assert response.status_code == 422


def test_required_noneable_body_embed_value():
    response = client.post("/body-embed", json={"b": "foo"})
    assert response.status_code == 200

class InvoiceEvent(BaseModel):
    description: str
    paid: bool


class InvoiceEventReceived(BaseModel):
    ok: bool


invoices_callback_router = APIRouter()


@invoices_callback_router.post(
    "{$callback_url}/invoices/{$request.body.id}", response_model=InvoiceEventReceived
)
def invoice_notification(body: InvoiceEvent):
    pass  # pragma: nocover


class Event(BaseModel):
    name: str

        response = client.post("/files/", files={"file": file})
    assert response.status_code == 200, response.text
    assert response.json() == {"file_size": 14}


def test_post_upload_file(tmp_path, client: TestClient):
    path = tmp_path / "test.txt"
    path.write_bytes(b"<file content>")

    with path.open("rb") as file:
        response = client.post("/uploadfile/", files={"file": file})

        assertEquals(Method.POST, Method.valueOf("POST"));
        assertEquals(Method.HEAD, Method.valueOf("HEAD"));
    }

    public void test_complexScenario() {
        // Test a complex scenario with multiple operations
        RequestData data = new RequestData();

        // Set values
        data.setMethod("POST");
        data.setUrl("https://api.example.com/endpoint");

from typing import Annotated, Optional

from fastapi import FastAPI, File, Form
from starlette.testclient import TestClient

app = FastAPI()


@app.post("/urlencoded")
async def post_url_encoded(age: Annotated[Optional[int], Form()] = None):
    return age


@app.post("/multipart")
async def post_multi_part(
    age: Annotated[Optional[int], Form()] = None,
    file: Annotated[Optional[bytes], File()] = None,
):