Fix validation issues and test setup

test_main.py

@@ -1,16 +1,27 @@
+import os
+import tempfile
+
 import pytest
 from fastapi.testclient import TestClient
 from main import app, init_db
-import sqlite3
-import os
 
-client = TestClient(app)
 
 def setup_module(module):
-    # Use an in-memory database for tests
-    os.environ["DB_PATH"] = ":memory:"
+    fd, path = tempfile.mkstemp(suffix=".db")
+    os.close(fd)
+    module.TEST_DB_PATH = path
+    os.environ["DB_PATH"] = path
     init_db()
 
+
+def teardown_module(module):
+    path = getattr(module, "TEST_DB_PATH", None)
+    if path and os.path.exists(path):
+        os.remove(path)
+
+
+client = TestClient(app)
+
 def test_root():
     r = client.get("/")
     assert r.status_code == 200