import pytest
from unittest.mock import AsyncMock, patch, MagicMock
from datetime import datetime, timezone
from src.crawlers.microsoft_research_crawler import MicrosoftResearchCrawler
from src.crawlers.dto import NewsItemDTO

MOCK_MSR_RSS = """<?xml version="1.0" encoding="UTF-8" ?>
<rss version="2.0">
<channel>
  <title>Microsoft Research</title>
  <item>
    <title>MSR Paper Title</title>
    <link>https://www.microsoft.com/en-us/research/publication/msr-paper/</link>
    <description>MSR Paper Description</description>
    <pubDate>Mon, 10 Mar 2026 10:00:00 GMT</pubDate>
  </item>
</channel>
</rss>
"""

@pytest.mark.asyncio
async def test_microsoft_research_crawler_fetch_latest():
    crawler = MicrosoftResearchCrawler()
    
    with patch("aiohttp.ClientSession.get") as mock_get:
        mock_response = AsyncMock()
        mock_response.text.return_value = MOCK_MSR_RSS
        mock_response.status = 200
        mock_response.raise_for_status = MagicMock()
        mock_get.return_value.__aenter__.return_value = mock_response

        items = await crawler.fetch_latest()

        assert len(items) == 1
        assert items[0].title == "MSR Paper Title"
        assert items[0].url == "https://www.microsoft.com/en-us/research/publication/msr-paper/"
        assert items[0].source == "Microsoft Research"
        assert items[0].timestamp == datetime(2026, 3, 10, 10, 0, tzinfo=timezone.utc)