def duplicate_dependency(item: Item):
    return item


def dependency(item2: Item):
    return item2


def sub_duplicate_dependency(
    item: Item, sub_item: Item = Depends(duplicate_dependency)
):
    return [item, sub_item]


@app.post("/with-duplicates")
async def with_duplicates(item: Item, item2: Item = Depends(duplicate_dependency)):
    return [item, item2]


@app.post("/no-duplicates")

* ✅ Use `inline-snapshot` to support different Pydantic versions in the test suite. PR [#12534](https://github.com/fastapi/fastapi/pull/12534) by [@15r10nk](https://github.com/15r10nk).