feat(ai): ecosysteme d'outils phase 2 - recherche a cle, cache/retry, Playwright, crawl, Gitea/GitHub, documents (#92)

tests/test_web_cache.py

@@ -0,0 +1,82 @@
+"""Unit tests for the SQLite web cache (backend.tools.webcache, #92)."""
+
+import pytest
+
+from backend.tools import webcache
+
+
+@pytest.fixture
+def cache_enabled(tmp_path, monkeypatch):
+    """Enable the cache against an isolated file with a short TTL."""
+    monkeypatch.setenv("OBSIGATE_WEB_CACHE_PATH", str(tmp_path / "cache.sqlite3"))
+    monkeypatch.setenv("OBSIGATE_WEB_CACHE_TTL", "60")
+    webcache._schema_ready = False
+    yield
+    webcache._schema_ready = False
+
+
+class TestCacheKey:
+    def test_deterministic_and_payload_sensitive(self):
+        a = webcache.cache_key("search", {"q": "pizza", "page": 1})
+        b = webcache.cache_key("search", {"page": 1, "q": "pizza"})
+        c = webcache.cache_key("search", {"q": "pasta", "page": 1})
+        d = webcache.cache_key("fetch", {"q": "pizza", "page": 1})
+        assert a == b
+        assert a != c
+        assert a != d
+
+
+class TestCacheRoundTrip:
+    def test_set_get_roundtrip(self, cache_enabled):
+        key = webcache.cache_key("search", {"q": "x"})
+        webcache.cache_set(key, {"results": [1, 2, 3], "provider": "tavily"})
+        assert webcache.cache_get(key) == {"results": [1, 2, 3], "provider": "tavily"}
+
+    def test_miss_returns_none(self, cache_enabled):
+        assert webcache.cache_get("search:unknown") is None
+
+    def test_overwrite_updates_value(self, cache_enabled):
+        key = webcache.cache_key("search", {"q": "x"})
+        webcache.cache_set(key, {"v": 1})
+        webcache.cache_set(key, {"v": 2})
+        assert webcache.cache_get(key) == {"v": 2}
+
+    def test_ttl_expiry(self, tmp_path, monkeypatch):
+        monkeypatch.setenv("OBSIGATE_WEB_CACHE_PATH", str(tmp_path / "cache.sqlite3"))
+        monkeypatch.setenv("OBSIGATE_WEB_CACHE_TTL", "0.05")
+        webcache._schema_ready = False
+        key = webcache.cache_key("search", {"q": "x"})
+        webcache.cache_set(key, {"v": 1})
+        assert webcache.cache_get(key) == {"v": 1}
+        import time
+
+        time.sleep(0.15)
+        assert webcache.cache_get(key) is None
+
+    def test_disabled_when_ttl_zero(self, cache_enabled, monkeypatch):
+        monkeypatch.setenv("OBSIGATE_WEB_CACHE_TTL", "0")
+        key = webcache.cache_key("search", {"q": "x"})
+        webcache.cache_set(key, {"v": 1})
+        assert webcache.cache_get(key) is None
+
+    def test_purge_expired(self, cache_enabled, monkeypatch):
+        key = webcache.cache_key("search", {"q": "x"})
+        webcache.cache_set(key, {"v": 1})
+        monkeypatch.setenv("OBSIGATE_WEB_CACHE_TTL", "0.05")
+        import time
+
+        time.sleep(0.15)
+        assert webcache.purge_expired() >= 1
+        assert webcache.cache_get(key) is None
+
+    def test_corrupt_db_degrades_silently(self, tmp_path, monkeypatch):
+        # A directory as cache file breaks sqlite3.connect: the cache must
+        # disable itself instead of breaking the tools.
+        monkeypatch.setenv("OBSIGATE_WEB_CACHE_PATH", str(tmp_path))
+        monkeypatch.setenv("OBSIGATE_WEB_CACHE_TTL", "60")
+        webcache._schema_ready = False
+        try:
+            assert webcache.cache_get("search:x") is None
+            webcache.cache_set("search:x", {"v": 1})
+        finally:
+            webcache._schema_ready = False