修复数据库迁移问题、新增环境变量读写

tests/test_main.py

@@ -4,10 +4,18 @@ from main import app
 
 client = TestClient(app)
 
+def is_valid_instance_id(instance_id):
+    """Check if a string is a valid UUID4."""
+    
+    import uuid
+    
+    try:
+        uuid.UUID(instance_id, version=4)
+    except (ValueError, TypeError):
+        assert False, f"instance_id is not a valid UUID4: {instance_id}"
 
 def test_read_main():
     from pkg.conf.appmeta import BackendVersion
-    import uuid
     
     response = client.get("/api/site/ping")
     json_response = response.json()
@@ -17,7 +25,14 @@ def test_read_main():
     assert json_response['data'] == BackendVersion
     assert json_response['msg'] is None
     assert 'instance_id' in json_response
-    try:
-        uuid.UUID(json_response['instance_id'], version=4)
-    except (ValueError, TypeError):
-        assert False, f"instance_id is not a valid UUID4: {json_response['instance_id']}"
+    is_valid_instance_id(json_response['instance_id'])
+        
+    response = client.get("/api/site/config")
+    json_response = response.json()
+    
+    assert response.status_code == 200
+    assert json_response['code'] == 0
+    assert json_response['data'] is not None
+    assert json_response['msg'] is None
+    assert 'instance_id' in json_response
+    is_valid_instance_id(json_response['instance_id'])