Item<T> itemInfo = getItem(groupNumber, itemNumber);
    Item<T> relatedInfo = getItem(groupNumber, relatedItemNumber);

    T item = itemInfo.value;
    T related = relatedInfo.value;
    assertWithTemplate(
        "$ITEM must be $RELATIONSHIP to $OTHER",
        itemInfo,
        relatedInfo,
        equivalence.equivalent(item, related));

        raise HTTPException(status_code=404, detail="Item not found")
    return fake_db[item_id]


@app.post("/items/", response_model=Item)
async def create_item(item: Item, x_token: Annotated[str, Header()]):
    if x_token != fake_secret_token:
        raise HTTPException(status_code=400, detail="Invalid X-Token header")
    if item.id in fake_db:
        raise HTTPException(status_code=409, detail="Item already exists")
    fake_db[item.id] = item

app = FastAPI()


class Item(BaseModel):
    name: str
    description: Union[str, None] = None
    price: float
    tax: Union[float, None] = None
    tags: set[str] = set()


@app.post("/items/", response_model=Item, summary="Create an item")
async def create_item(item: Item):
    """
    Create an item with all the information:

    - **name**: each item must have a name

                                        ],
                                        "title": "Item",
                                        "examples": [
                                            {
                                                "name": "Foo",
                                                "description": "A very nice Item",

        raise HTTPException(status_code=404, detail="Item not found")
    return fake_db[item_id]


@app.post("/items/", response_model=Item)
async def create_item(item: Item, x_token: Annotated[str, Header()]):
    if x_token != fake_secret_token:
        raise HTTPException(status_code=400, detail="Invalid X-Token header")
    if item.id in fake_db:
        raise HTTPException(status_code=409, detail="Item already exists")
    fake_db[item.id] = item

            pass  # pragma: no cover


def test_invalid_dict():
    with pytest.raises(AssertionError):
        app = FastAPI()

        class Item(BaseModel):
            title: str

        @app.get("/items/")
        def read_items(q: Dict[str, Item] = Query(default=None)):
            pass  # pragma: no cover


def test_invalid_simple_dict():

    response = client.put("/items/5", json={"item": {"name": "Foo", "price": 3.0}})
    assert response.status_code == 200
    assert response.json() == {
        "item_id": 5,
        "item": {"name": "Foo", "price": 3.0, "description": None, "tax": None},
    }


def test_items_6(client: TestClient):
    response = client.put(
        "/items/6",
        json={
            "item": {
                "name": "Bar",

                "Body_update_item_items__item_id__put": {
                    "title": "Body_update_item_items__item_id__put",
                    "required": ["item"],
                    "type": "object",
                    "properties": {"item": {"$ref": "#/components/schemas/Item"}},
                },
                "ValidationError": {
                    "title": "ValidationError",

                                        ],
                                        "title": "Item",
                                        "examples": [
                                            {
                                                "name": "Foo",
                                                "description": "A very nice Item",

                                        ],
                                        "title": "Item",
                                        "examples": [
                                            {
                                                "name": "Foo",
                                                "description": "A very nice Item",