import pytest
import asyncio
from aioresponses import aioresponses
from app import fetch_image, DERPYBOORU_API_SEARCH, DERPIBOORU_TOKEN

@pytest.mark.asyncio
async def test_fetch_image_found():
    # Мокаем API-ответ с одним изображением
    tags = ["safe", "pony"]
    with aioresponses() as m:
        m.get(
            f"{DERPYBOORU_API_SEARCH}",
            payload={
                "images": [
                    {
                        "representations": {"full": "https://test.img/full.png"},
                        "uploader": "tester",
                        "view_url": "https://derpibooru.org/images/1",
                        "tags": ["pony", "cute"]
                    }
                ]
            }
        )
        async with asyncio.get_event_loop().run_until_complete:
            result = await fetch_image(tags)
        assert result is not None
        url, author, source, img_tags = result
        assert url == "https://test.img/full.png"
        assert author == "tester"
        assert source == "https://derpibooru.org/images/1"
        assert "pony" in img_tags

@pytest.mark.asyncio
async def test_fetch_image_not_found():
    tags = ["nonexistenttag123"]
    with aioresponses() as m:
        m.get(
            f"{DERPYBOORU_API_SEARCH}",
            payload={"images": []}
        )
        result = await fetch_image(tags)
        assert result is None