test: add integration tests for location API

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/conftest.py

@@ -0,0 +1,29 @@
+import pytest
+from fastapi.testclient import TestClient
+from sqlalchemy.orm import Session
+
+from app.core.database import SessionLocal
+from app.main import app
+from app.models.finished_goods import FinishedGoodsLocation
+
+
+@pytest.fixture
+def client():
+    return TestClient(app)
+
+
+@pytest.fixture
+def db():
+    session = SessionLocal()
+    yield session
+    session.close()
+
+
+@pytest.fixture(autouse=True)
+def cleanup_test_data(db: Session):
+    yield
+    test_zongpai_nos = ["26B999", "26C999", "26BW0999", "26T999"]
+    db.query(FinishedGoodsLocation).filter(
+        FinishedGoodsLocation.zongpai_no.in_(test_zongpai_nos)
+    ).delete(synchronize_session=False)
+    db.commit()