assert state.app_shutdown is False
        assert state.router_shutdown is False
        assert state.sub_router_shutdown is False
        response = client.get("/")
        assert response.status_code == 200, response.text
        assert response.json() == {"message": "Hello World"}
    assert state.app_startup is True
    assert state.router_startup is True
    assert state.sub_router_startup is True
    assert state.app_shutdown is True

def test_dependency_gets_exception():
    assert state["except"] is False
    assert state["finally"] is False
    response = client.put("/invalid-user/rick", json="Morty")
    assert response.status_code == 400, response.text
    assert response.json() == {"detail": "Invalid user"}
    assert state["except"] is True
    assert state["finally"] is True
    assert fake_database["rick"] == "Rick Sanchez"


def test_dependency_no_exception():

      (d) If the Work includes a "NOTICE" text file as part of its
          distribution, then any Derivative Works that You distribute must
          include a readable copy of the attribution notices contained
          within such NOTICE file, excluding those notices that do not
          pertain to any part of the Derivative Works, in at least one
          of the following places: within a NOTICE text file distributed

<div style="text-align: right; margin-right: 10%;">Kabir Khan - <strong>Microsoft</strong> <a href="https://github.com/fastapi/fastapi/pull/26" target="_blank"><small>(ref)</small></a></div>

---

"_**FastAPI**'ı **tahminlerimiz**'i sorgulanabilir hale getirecek bir **REST** sunucu oluşturmak için benimsedik/kullanmaya başladık._"

    ],
)
def test_required_alias_by_alias(path: str):
    client = TestClient(app)
    response = client.get(path, headers={"p_alias": "hello"})
    assert response.status_code == 200, response.text
    assert response.json() == {"p": "hello"}


# =====================================================================================
# Validation alias


@app.get("/required-validation-alias")

def test_header_param_model_extra(client: TestClient):
    response = client.get(
        "/items/", headers=[("save_data", "true"), ("tool", "plumbus")]
    )
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "host": "testserver",
            "save_data": True,
            "if_modified_since": None,
            "traceparent": None,
            "x_tag": [],

)
async def a(id):
    pass  # pragma: no cover


client = TestClient(app)


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/a/{id}": {
                "get": {

* 将 `HTMLResponse` 作为你的 *路径操作* 的 `response_class` 参数传入。

{* ../../docs_src/custom_response/tutorial002.py hl[2,7] *}

/// info | 提示

参数 `response_class` 也会用来定义响应的「媒体类型」。

在这个例子中，HTTP 头的 `Content-Type` 会被设置成 `text/html`。

并且在 OpenAPI 文档中也会这样记录。

///

### 返回一个 `Response`

正如你在 [直接返回响应](response-directly.md){.internal-link target=_blank} 中了解到的，你也可以通过直接返回响应在 *路径操作* 中直接重载响应。

和上面一样的例子，返回一个 `HTMLResponse` 看起来可能是这样：

     * is given by {@link #getSource()}.
     *
     * @return the one-based index of the line containing the problem or a non-positive value if unknown
     */
    int getLineNumber();

    /**
     * Gets the one-based index of the column containing the problem. The column number should refer to some text file
     * that is given by {@link #getSource()}.
     *

            changes?.forEach { assertContains(it.toString()) }
            assertContains(cleanupHint)
        }
    }

    private
    fun StringWriter.assertContains(text: String) {
        Assertions.assertTrue(toString().contains(text)) {
            "Did not find expected error message in $this"
        }
    }

    protected
    data class Change(val type: String, val member: String) {