aiogram/tests/test_api/test_methods/test_set_chat_photo.py

from aiogram.methods import Request, SetChatPhoto
from aiogram.types import BufferedInputFile
from tests.mocked_bot import MockedBot


class TestSetChatPhoto:
    async def test_bot_method(self, bot: MockedBot):
        prepare_result = bot.add_result_for(SetChatPhoto, ok=True, result=True)

        response: bool = await bot.set_chat_photo(
            chat_id=-42, photo=BufferedInputFile(b"", filename="file.png")
        )
        request = bot.get_request()
        assert response == prepare_result.result