fix(sec): 대형 exhibit 파일로 인한 서버 메모리 고갈 방지
- fetch_text에 max_bytes 파라미터 추가: Content-Length 헤더로 다운로드 전 사전 reject, 헤더 없으면 content.read(max_bytes+1)로 제한적 읽기 - ValueError는 즉시 raise (retry 없음 — 크기는 재시도해도 안 줄어듦) - in-memory 캐시(_text_cache) 1MB 가드: 대형 응답은 디스크 캐시에만 저장 - MAX_EXHIBIT_SIZE 1MB → 5MB, fetch_text(max_bytes=...) 호출로 다운로드 전 체크 - exhibit deadline 30초 → 15초 (서비스 + 엔드포인트 + bulk) - 신규 테스트 5개: Content-Length 사전 거부, body 제한 읽기, 메모리 캐시 가드, 소형 캐시 유지, ValueError no-retry Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>main
I Luk Kim
5 months ago
parent
89113d45ab
commit
e2c242c7cc
@ -0,0 +1,413 @@
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"""
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Unit tests for SEC filings fixes:
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1. Backpressure: SECHttpClient._pending counter rejects when queue full
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2. Negative cache helpers: get_negative_cached / set_negative_cached
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3. Exhibit endpoint negative caching: 404 cached, skipped on repeat
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"""
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import asyncio
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import pytest
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from unittest.mock import AsyncMock, MagicMock, patch
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# ---------------------------------------------------------------------------
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# Fix 1: Backpressure — _pending counter
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# ---------------------------------------------------------------------------
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class TestSECHttpClientBackpressure:
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def _make_client(self):
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from app.services.sec_http_client import SECHttpClient
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client = SECHttpClient.__new__(SECHttpClient)
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client._pending = 0
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client._MAX_PENDING = 5
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client._text_cache = {}
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client._json_cache = {}
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client._cache_dir = "/tmp/test_sec_cache_bp"
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client._req_sem = asyncio.Semaphore(2)
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from app.services.sec_http_client import _TokenBucket
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client._rate_limiter = _TokenBucket(rate=100.0, capacity=100.0)
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client.http_timeout = MagicMock()
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client.http_timeout.total = 12
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client._session = None
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return client
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@pytest.mark.asyncio
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async def test_pending_counter_increments_and_decrements(self):
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"""_pending goes up during fetch and back to 0 after."""
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client = self._make_client()
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# Patch _get_session to return a mock that yields a 200 response
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mock_resp = AsyncMock()
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mock_resp.status = 200
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mock_resp.text = AsyncMock(return_value="hello world")
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mock_resp.__aenter__ = AsyncMock(return_value=mock_resp)
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mock_resp.__aexit__ = AsyncMock(return_value=False)
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mock_session = MagicMock()
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mock_session.get = MagicMock(return_value=mock_resp)
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with patch.object(client, "_get_session", AsyncMock(return_value=mock_session)):
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with patch("app.services.sec_http_client._is_sec_block_page", return_value=False):
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with patch("os.path.exists", return_value=False):
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result = await client.fetch_text("http://example.com/test")
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assert result == "hello world"
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assert client._pending == 0, "pending must be 0 after completion"
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@pytest.mark.asyncio
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async def test_queue_full_raises_immediately(self):
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"""When _pending >= _MAX_PENDING, fetch_text raises without touching SEC."""
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client = self._make_client()
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client._pending = client._MAX_PENDING # Already at limit
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with patch("os.path.exists", return_value=False):
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with pytest.raises(RuntimeError, match="SEC request queue full"):
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await client.fetch_text("http://example.com/overload")
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@pytest.mark.asyncio
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async def test_queue_full_json_raises_immediately(self):
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"""Same check for fetch_json."""
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client = self._make_client()
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client._pending = client._MAX_PENDING
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with patch("os.path.exists", return_value=False):
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with pytest.raises(RuntimeError, match="SEC request queue full"):
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await client.fetch_json("http://example.com/overload.json")
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@pytest.mark.asyncio
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async def test_pending_decrements_on_exception(self):
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"""_pending must be decremented even when an exception is raised."""
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client = self._make_client()
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assert client._pending == 0
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with patch("os.path.exists", return_value=False):
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with patch.object(client, "_get_session", AsyncMock(side_effect=RuntimeError("boom"))):
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with pytest.raises(Exception):
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await client.fetch_text("http://example.com/fail")
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assert client._pending == 0, "pending must return to 0 after exception"
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@pytest.mark.asyncio
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async def test_rate_reduced_to_8(self):
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"""Rate limiter must be 8.0 req/sec, not 10.0."""
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from app.services.sec_http_client import SECHttpClient
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client = SECHttpClient("Test")
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assert client._rate_limiter._rate == 8.0
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assert client._rate_limiter._capacity == 8.0
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# ---------------------------------------------------------------------------
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# Fix 2: Negative cache helpers
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# ---------------------------------------------------------------------------
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class TestNegativeCacheHelpers:
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@pytest.mark.asyncio
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async def test_get_negative_cached_miss(self):
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"""Returns False when key not in Redis."""
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from app.utils.cache import get_negative_cached
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mock_redis = AsyncMock()
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mock_redis.exists = AsyncMock(return_value=0)
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with patch("app.utils.cache.get_redis", AsyncMock(return_value=mock_redis)):
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result = await get_negative_cached("filings:exhibit:404:ACC:EX-99.1")
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assert result is False
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@pytest.mark.asyncio
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async def test_get_negative_cached_hit(self):
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"""Returns True when key exists in Redis."""
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from app.utils.cache import get_negative_cached
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mock_redis = AsyncMock()
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mock_redis.exists = AsyncMock(return_value=1)
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with patch("app.utils.cache.get_redis", AsyncMock(return_value=mock_redis)):
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result = await get_negative_cached("filings:exhibit:404:ACC:EX-99.1")
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assert result is True
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@pytest.mark.asyncio
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async def test_set_negative_cached_calls_redis(self):
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"""set_negative_cached calls redis.set with b'1' and the TTL."""
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from app.utils.cache import set_negative_cached
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mock_redis = AsyncMock()
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mock_redis.set = AsyncMock()
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with patch("app.utils.cache.get_redis", AsyncMock(return_value=mock_redis)):
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await set_negative_cached("filings:exhibit:404:ACC:EX-99.2", ttl=3600)
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mock_redis.set.assert_called_once_with(
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"filings:exhibit:404:ACC:EX-99.2", b"1", ex=3600
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)
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@pytest.mark.asyncio
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async def test_negative_cache_graceful_no_redis(self):
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"""Both helpers return gracefully when Redis is unavailable."""
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from app.utils.cache import get_negative_cached, set_negative_cached
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with patch("app.utils.cache.get_redis", AsyncMock(return_value=None)):
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assert await get_negative_cached("any:key") is False
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await set_negative_cached("any:key") # must not raise
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@pytest.mark.asyncio
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async def test_negative_cache_graceful_redis_error(self):
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"""Both helpers swallow Redis errors."""
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from app.utils.cache import get_negative_cached, set_negative_cached
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mock_redis = AsyncMock()
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mock_redis.exists = AsyncMock(side_effect=Exception("connection reset"))
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mock_redis.set = AsyncMock(side_effect=Exception("connection reset"))
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with patch("app.utils.cache.get_redis", AsyncMock(return_value=mock_redis)):
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assert await get_negative_cached("any:key") is False
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await set_negative_cached("any:key") # must not raise
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# ---------------------------------------------------------------------------
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# Fix 3: Exhibit endpoint negative caching
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# ---------------------------------------------------------------------------
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class TestExhibitEndpointNegativeCaching:
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"""Test that the GET /exhibit endpoint checks & sets the negative cache."""
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def _make_request(self, accession_number="0001234567-26-000001", exhibit_type="EX-99.1"):
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return {"accession_number": accession_number, "exhibit_type": exhibit_type}
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@pytest.mark.asyncio
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async def test_negative_cache_hit_returns_404_immediately(self):
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"""When negative cache is set, endpoint returns 404 without calling service."""
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from fastapi import HTTPException
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from app.api.v1.endpoints.filings import get_exhibit_content
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mock_db = AsyncMock()
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with patch("app.api.v1.endpoints.filings.get_negative_cached", AsyncMock(return_value=True)):
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with patch("app.api.v1.endpoints.filings.sec_filings_service") as mock_svc:
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with pytest.raises(HTTPException) as exc_info:
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await get_exhibit_content(
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accession_number="0001234567-26-000001",
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response=MagicMock(),
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exhibit_type="EX-99.1",
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db=mock_db,
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)
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assert exc_info.value.status_code == 404
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mock_svc.get_exhibit_content.assert_not_called()
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@pytest.mark.asyncio
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async def test_value_error_sets_negative_cache(self):
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"""When service raises ValueError (exhibit not found), negative cache is set."""
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from fastapi import HTTPException
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from app.api.v1.endpoints.filings import get_exhibit_content
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mock_db = AsyncMock()
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set_neg = AsyncMock()
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with patch("app.api.v1.endpoints.filings.get_negative_cached", AsyncMock(return_value=False)):
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with patch("app.api.v1.endpoints.filings.set_negative_cached", set_neg):
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with patch("app.api.v1.endpoints.filings.sec_filings_service") as mock_svc:
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mock_svc.get_exhibit_content = AsyncMock(
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side_effect=ValueError("Exhibit EX-99.1 not found in filing ...")
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)
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with pytest.raises(HTTPException) as exc_info:
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await get_exhibit_content(
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accession_number="0001234567-26-000001",
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response=MagicMock(),
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exhibit_type="EX-99.1",
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db=mock_db,
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)
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assert exc_info.value.status_code == 404
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set_neg.assert_called_once()
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# Verify the key and TTL
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call_args = set_neg.call_args
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assert "EX-99.1" in call_args[0][0]
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assert call_args[1].get("ttl") == 3600 or (len(call_args[0]) > 1 and call_args[0][1] == 3600)
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@pytest.mark.asyncio
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async def test_non_value_error_does_not_set_negative_cache(self):
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"""Network/SEC errors (non-ValueError) must NOT populate negative cache."""
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from fastapi import HTTPException
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from app.api.v1.endpoints.filings import get_exhibit_content
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mock_db = AsyncMock()
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set_neg = AsyncMock()
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with patch("app.api.v1.endpoints.filings.get_negative_cached", AsyncMock(return_value=False)):
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with patch("app.api.v1.endpoints.filings.set_negative_cached", set_neg):
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with patch("app.api.v1.endpoints.filings.sec_filings_service") as mock_svc:
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mock_svc.get_exhibit_content = AsyncMock(
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side_effect=RuntimeError("SEC request queue full")
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)
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with pytest.raises(HTTPException) as exc_info:
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await get_exhibit_content(
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accession_number="0001234567-26-000001",
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response=MagicMock(),
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exhibit_type="EX-99.1",
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db=mock_db,
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)
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assert exc_info.value.status_code == 502
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set_neg.assert_not_called()
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@pytest.mark.asyncio
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async def test_successful_fetch_does_not_set_negative_cache(self):
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"""Successful exhibit fetch must not touch the negative cache."""
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from app.api.v1.endpoints.filings import get_exhibit_content
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mock_db = AsyncMock()
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set_neg = AsyncMock()
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with patch("app.api.v1.endpoints.filings.get_negative_cached", AsyncMock(return_value=False)):
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with patch("app.api.v1.endpoints.filings.set_negative_cached", set_neg):
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with patch("app.api.v1.endpoints.filings.sec_filings_service") as mock_svc:
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mock_svc.get_exhibit_content = AsyncMock(return_value={
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"content": "<html>Press Release</html>",
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"content_type": "text/html",
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"filename": "exhibit99-1.htm",
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"url": "https://www.sec.gov/Archives/edgar/data/123/000123/exhibit99-1.htm",
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})
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# Bypass the @with_cache decorator by patching set_cached_response
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with patch("app.utils.cache.set_cached_response", AsyncMock(return_value="etag")):
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with patch("app.utils.cache.get_cached_response", AsyncMock(return_value=None)):
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result = await get_exhibit_content(
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accession_number="0001234567-26-000001",
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response=MagicMock(),
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exhibit_type="EX-99.1",
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db=mock_db,
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)
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assert result is not None
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set_neg.assert_not_called()
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# ---------------------------------------------------------------------------
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# Fix 4 (large exhibit): max_bytes pre-check and memory cache guard
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# ---------------------------------------------------------------------------
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class TestFetchTextMaxBytes:
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def _make_client(self):
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from app.services.sec_http_client import SECHttpClient, _TokenBucket
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client = SECHttpClient.__new__(SECHttpClient)
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client._pending = 0
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client._MAX_PENDING = 50
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client._text_cache = {}
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client._json_cache = {}
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client._cache_dir = "/tmp/test_sec_cache_mb"
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client._req_sem = asyncio.Semaphore(2)
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client._rate_limiter = _TokenBucket(rate=100.0, capacity=100.0)
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client.http_timeout = MagicMock()
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client.http_timeout.total = 12
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client._session = None
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return client
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def _make_resp(self, content_length=None, body=b"x" * 200):
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mock_resp = AsyncMock()
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mock_resp.status = 200
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mock_resp.content_length = content_length
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mock_resp.get_encoding = MagicMock(return_value="utf-8")
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# content.read returns the body bytes
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mock_resp.content = AsyncMock()
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mock_resp.content.read = AsyncMock(return_value=body)
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mock_resp.__aenter__ = AsyncMock(return_value=mock_resp)
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mock_resp.__aexit__ = AsyncMock(return_value=False)
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return mock_resp
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@pytest.mark.asyncio
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async def test_content_length_too_large_raises_immediately(self):
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"""fetch_text with max_bytes rejects via Content-Length header before reading body."""
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client = self._make_client()
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mock_resp = self._make_resp(content_length=5000, body=b"x" * 5000)
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mock_session = MagicMock()
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mock_session.get = MagicMock(return_value=mock_resp)
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with patch.object(client, "_get_session", AsyncMock(return_value=mock_session)):
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with patch("os.path.exists", return_value=False):
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with pytest.raises(ValueError, match="too large"):
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await client.fetch_text("http://example.com/big", max_bytes=100)
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# Body should not have been read when Content-Length already exceeded
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mock_resp.content.read.assert_not_called()
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@pytest.mark.asyncio
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||||||
|
async def test_no_content_length_body_too_large_raises(self):
|
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|
"""fetch_text with max_bytes rejects via body read when Content-Length is absent."""
|
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|
client = self._make_client()
|
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|
# No Content-Length header, but body exceeds limit
|
||||||
|
mock_resp = self._make_resp(content_length=None, body=b"x" * 200)
|
||||||
|
mock_session = MagicMock()
|
||||||
|
mock_session.get = MagicMock(return_value=mock_resp)
|
||||||
|
|
||||||
|
with patch.object(client, "_get_session", AsyncMock(return_value=mock_session)):
|
||||||
|
with patch("os.path.exists", return_value=False):
|
||||||
|
with pytest.raises(ValueError, match="exceeded"):
|
||||||
|
await client.fetch_text("http://example.com/big2", max_bytes=100)
|
||||||
|
|
||||||
|
@pytest.mark.asyncio
|
||||||
|
async def test_large_text_not_stored_in_memory_cache(self):
|
||||||
|
"""Responses > 1MB must NOT be stored in _text_cache (only disk cache)."""
|
||||||
|
client = self._make_client()
|
||||||
|
large_body = b"A" * (2 * 1024 * 1024) # 2MB
|
||||||
|
mock_resp = AsyncMock()
|
||||||
|
mock_resp.status = 200
|
||||||
|
mock_resp.content_length = None
|
||||||
|
mock_resp.text = AsyncMock(return_value=large_body.decode("utf-8"))
|
||||||
|
mock_resp.__aenter__ = AsyncMock(return_value=mock_resp)
|
||||||
|
mock_resp.__aexit__ = AsyncMock(return_value=False)
|
||||||
|
mock_session = MagicMock()
|
||||||
|
mock_session.get = MagicMock(return_value=mock_resp)
|
||||||
|
|
||||||
|
with patch.object(client, "_get_session", AsyncMock(return_value=mock_session)):
|
||||||
|
with patch("app.services.sec_http_client._is_sec_block_page", return_value=False):
|
||||||
|
with patch("os.path.exists", return_value=False):
|
||||||
|
with patch("builtins.open", MagicMock()):
|
||||||
|
result = await client.fetch_text("http://example.com/large")
|
||||||
|
|
||||||
|
assert "http://example.com/large" not in client._text_cache
|
||||||
|
assert len(result) == len(large_body)
|
||||||
|
|
||||||
|
@pytest.mark.asyncio
|
||||||
|
async def test_small_text_stored_in_memory_cache(self):
|
||||||
|
"""Responses <= 1MB should still be stored in _text_cache."""
|
||||||
|
client = self._make_client()
|
||||||
|
small_body = "hello world"
|
||||||
|
mock_resp = AsyncMock()
|
||||||
|
mock_resp.status = 200
|
||||||
|
mock_resp.content_length = None
|
||||||
|
mock_resp.text = AsyncMock(return_value=small_body)
|
||||||
|
mock_resp.__aenter__ = AsyncMock(return_value=mock_resp)
|
||||||
|
mock_resp.__aexit__ = AsyncMock(return_value=False)
|
||||||
|
mock_session = MagicMock()
|
||||||
|
mock_session.get = MagicMock(return_value=mock_resp)
|
||||||
|
|
||||||
|
with patch.object(client, "_get_session", AsyncMock(return_value=mock_session)):
|
||||||
|
with patch("app.services.sec_http_client._is_sec_block_page", return_value=False):
|
||||||
|
with patch("os.path.exists", return_value=False):
|
||||||
|
with patch("builtins.open", MagicMock()):
|
||||||
|
result = await client.fetch_text("http://example.com/small")
|
||||||
|
|
||||||
|
assert client._text_cache.get("http://example.com/small") == small_body
|
||||||
|
|
||||||
|
@pytest.mark.asyncio
|
||||||
|
async def test_size_error_does_not_retry(self):
|
||||||
|
"""ValueError from max_bytes must propagate immediately without retrying."""
|
||||||
|
client = self._make_client()
|
||||||
|
mock_resp = self._make_resp(content_length=None, body=b"x" * 200)
|
||||||
|
mock_session = MagicMock()
|
||||||
|
mock_session.get = MagicMock(return_value=mock_resp)
|
||||||
|
call_count = 0
|
||||||
|
|
||||||
|
original_get = mock_session.get
|
||||||
|
|
||||||
|
def counting_get(*args, **kwargs):
|
||||||
|
nonlocal call_count
|
||||||
|
call_count += 1
|
||||||
|
return original_get(*args, **kwargs)
|
||||||
|
|
||||||
|
mock_session.get = counting_get
|
||||||
|
|
||||||
|
with patch.object(client, "_get_session", AsyncMock(return_value=mock_session)):
|
||||||
|
with patch("os.path.exists", return_value=False):
|
||||||
|
with pytest.raises(ValueError):
|
||||||
|
await client.fetch_text("http://example.com/nretry", max_bytes=100)
|
||||||
|
|
||||||
|
# Should have tried exactly once (no retry on ValueError)
|
||||||
|
assert call_count == 1, f"Expected 1 attempt, got {call_count}"
|
||||||
Loading…
Reference in New Issue