diff --git a/tests/test_config.py b/tests/test_config.py
index e4dc273..ffae8cf 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -40,7 +40,7 @@ def test_get_server_config_success():
         "work": {
             "url": "https://jenkins.example.com",
             "username": "user",
-            "password": "pass"
+            "password": "pass",
         }
     }
     result = get_server_config(config, "work")
@@ -53,7 +53,7 @@ def test_get_server_config_not_found():
         "work": {
             "url": "https://jenkins.example.com",
             "username": "user",
-            "password": "pass"
+            "password": "pass",
         }
     }
     with pytest.raises(ConfigError) as exc_info:
@@ -64,12 +64,7 @@ def test_get_server_config_not_found():
 
 def test_get_server_config_missing_field():
     """Test error when required field is missing."""
-    config = {
-        "incomplete": {
-            "url": "https://jenkins.example.com",
-            "username": "user"
-        }
-    }
+    config = {"incomplete": {"url": "https://jenkins.example.com", "username": "user"}}
     with pytest.raises(ConfigError) as exc_info:
         get_server_config(config, "incomplete")
     assert "password" in str(exc_info.value)