fix: lint formatting in test_thread_safe.py

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

Author: dimitri-yatsenko

tests/unit/test_thread_safe.py

@@ -166,7 +166,9 @@ def test_instance_backend_sets_config(self, monkeypatch):
 
         with patch("datajoint.instance.Connection"):
             inst = Instance(
-                host="localhost", user="root", password="secret",
+                host="localhost",
+                user="root",
+                password="secret",
                 backend="postgresql",
             )
             assert inst.config.database.backend == "postgresql"
@@ -179,19 +181,23 @@ def test_instance_backend_default_from_config(self, monkeypatch):
 
         with patch("datajoint.instance.Connection"):
             inst = Instance(
-                host="localhost", user="root", password="secret",
+                host="localhost",
+                user="root",
+                password="secret",
             )
             assert inst.config.database.backend == "mysql"
 
     def test_instance_backend_affects_port_default(self, monkeypatch):
         """Instance(backend='postgresql') uses port 5432 by default."""
         monkeypatch.setenv("DJ_THREAD_SAFE", "false")
         from datajoint.instance import Instance
-        from unittest.mock import patch, call
+        from unittest.mock import patch
 
         with patch("datajoint.instance.Connection") as MockConn:
             Instance(
-                host="localhost", user="root", password="secret",
+                host="localhost",
+                user="root",
+                password="secret",
                 backend="postgresql",
             )
             # Connection should be called with port 5432 (PostgreSQL default)