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https://github.com/jxxghp/MoviePilot.git
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jxxghp
1402626a4a
- ConfigModel TMDB 配置区新增 EMPTY_RESULT_CACHE_TTL（默认 30 分钟），支持环境变量覆盖 - request/async_request/discover/TmdbCache 统一改读 settings，移除模块级常量与跨模块导入
114 lines
4.4 KiB
Python
114 lines
4.4 KiB
Python
"""
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TMDB request 层空结果快照短 TTL 缓存测试。
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TMDB 代理故障期间「合法 JSON 但 results 为空」的响应若随默认 TTL（可达数十小时）
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固化，故障自愈后同名搜索仍持续命中空结果。空结果快照必须仍入缓存（拦住故障窗口
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内的重复回源），但改用独立的 30 分钟短 TTL，过期后自然恢复回源。
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"""
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import asyncio
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from unittest.mock import patch
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from app.modules.themoviedb.tmdbv3api.tmdb import (
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TMDb,
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_is_empty_result_snapshot,
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)
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from app.runtime.cache import MemoryBackend
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from app.runtime.config import settings
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from tests.test_tmdb_response_cache import _FakeResponse
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EMPTY_PAYLOAD = {"page": 1, "results": [], "total_results": 0, "total_pages": 0}
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NOT_EMPTY_PAYLOAD = {"page": 1, "results": [{"id": 1}], "total_results": 1, "total_pages": 1}
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HEADERS = {"Content-Type": "application/json"}
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def _snapshot(payload: dict) -> dict:
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"""构造一个带快照标记的响应结构。"""
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return {TMDb._RESPONSE_SNAPSHOT_MARKER: True, "headers": {}, "json": payload}
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def _request_region_cache():
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"""取出 TMDb.request 装饰器使用的内存缓存区实例。"""
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return MemoryBackend._region_caches[MemoryBackend.get_region(TMDb.request.cache_region)]
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def _make_tmdb() -> TMDb:
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"""构造带测试 API Key 的 TMDb 客户端。"""
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tmdb = TMDb()
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tmdb.api_key = "test-key"
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return tmdb
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def test_empty_result_cache_ttl_is_thirty_minutes():
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"""空结果缓存的独立过期时间应为 30 分钟。"""
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assert settings.EMPTY_RESULT_CACHE_TTL == 30 * 60
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def test_empty_result_snapshot_predicate():
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"""空结果谓词只认 results 为空列表的快照，详情与有结果的响应不算空。"""
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assert _is_empty_result_snapshot(_snapshot(EMPTY_PAYLOAD))
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assert not _is_empty_result_snapshot(_snapshot(NOT_EMPTY_PAYLOAD))
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assert not _is_empty_result_snapshot(_snapshot({"id": 98865, "title": "Test"}))
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# json 非字典或无 results 字段时不能误判为空结果
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assert not _is_empty_result_snapshot(_snapshot("upstream error"))
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assert not _is_empty_result_snapshot(None)
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def test_empty_result_is_cached_but_expires_with_short_ttl():
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"""空结果快照仍入缓存避免重复回源，但按短 TTL 过期后恢复回源。"""
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tmdb = _make_tmdb()
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url = "https://api.tmdb.test/empty-short-ttl"
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fake = _FakeResponse(EMPTY_PAYLOAD, HEADERS)
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with patch.object(TMDb, "_request_once", return_value=fake) as req:
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tmdb.request("GET", url, None, None)
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tmdb.request("GET", url, None, None)
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assert req.call_count == 1
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region_cache = _request_region_cache()
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started_at = region_cache.timer()
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region_cache.expire(time=started_at + settings.EMPTY_RESULT_CACHE_TTL + 1)
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with patch.object(TMDb, "_request_once", return_value=fake) as req:
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tmdb.request("GET", url, None, None)
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assert req.call_count == 1
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def test_non_empty_result_keeps_default_ttl():
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"""有结果的响应不受短 TTL 影响，过期点仍为默认元数据缓存 TTL 之后。"""
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tmdb = _make_tmdb()
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url = "https://api.tmdb.test/non-empty-default-ttl"
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fake = _FakeResponse(NOT_EMPTY_PAYLOAD, HEADERS)
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with patch.object(TMDb, "_request_once", return_value=fake) as req:
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tmdb.request("GET", url, None, None)
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assert req.call_count == 1
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region_cache = _request_region_cache()
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started_at = region_cache.timer()
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# 推进到短 TTL 之后：非空结果不应在此刻过期
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region_cache.expire(time=started_at + settings.EMPTY_RESULT_CACHE_TTL + 1)
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tmdb.request("GET", url, None, None)
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assert req.call_count == 1
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def test_async_empty_result_is_cached_with_short_ttl():
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"""异步请求的空结果快照与同步路径一致，入缓存但按短 TTL 过期。"""
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tmdb = _make_tmdb()
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url = "https://api.tmdb.test/async-empty-short-ttl"
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fake = _FakeResponse(EMPTY_PAYLOAD, HEADERS)
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with patch.object(TMDb, "_async_request_once", return_value=fake) as req:
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asyncio.run(tmdb.async_request("GET", url, None, None))
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asyncio.run(tmdb.async_request("GET", url, None, None))
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assert req.call_count == 1
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region_cache = _request_region_cache()
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started_at = region_cache.timer()
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region_cache.expire(time=started_at + settings.EMPTY_RESULT_CACHE_TTL + 1)
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with patch.object(TMDb, "_async_request_once", return_value=fake) as req:
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asyncio.run(tmdb.async_request("GET", url, None, None))
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assert req.call_count == 1
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