From ccf1aab57aa4db1b0522fe4d091ffc2499b2f8e1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=B4mulo=20Collopy?= <romulo.collopy@gmail.com>
Date: Mon, 12 Feb 2024 16:25:41 -0500
Subject: [PATCH] adds test to check possible bug

---
 tests/test_contextvars.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/test_contextvars.py b/tests/test_contextvars.py
index d34a16e7..4043fee0 100644
--- a/tests/test_contextvars.py
+++ b/tests/test_contextvars.py
@@ -219,6 +219,7 @@ async def coro2():
 
         assert {"a": 1, "b": 2, "c": 3} == await coro1_task
         assert {"a": 2, "b": 2, "c": 3} == await coro2_task
+        assert merge_contextvars(None, "", {}) == {"c": 3}
 
     def test_get_only_gets_structlog_without_deleted(self):
         """