async def METHOD_NAME(tmp_path: Path) -> None:
    file_ = tmp_path / "file_wrapper"
    file_.write_text("abcdef")
    wrapper = FileBody(Path(file_), buffer_size=3)
    results = []
    async with wrapper as response:
        async for data in response:
            results.append(data)
    assert results == [b"abc", b"def"]