feat: 修复代码审核报告问题

tests/conftest.py

@@ -0,0 +1,21 @@
+"""测试配置"""
+import pytest
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+
+from database import Base
+from models import EnrichedArticle, Taxonomy, DuplicateGroup, DailyBrief
+
+
+TEST_DATABASE_URL = "sqlite:///:memory:"
+
+
+@pytest.fixture(scope="function")
+def db():
+    engine = create_engine(TEST_DATABASE_URL, connect_args={"check_same_thread": False})
+    Base.metadata.create_all(bind=engine)
+    Session = sessionmaker(bind=engine)
+    session = Session()
+    yield session
+    session.close()
+    Base.metadata.drop_all(bind=engine)