diff --git a/tests/unit/test_layer.py b/tests/unit/test_layer.py
index 69a648339d9a3c5d162275547a74bed66d97f236..9669d594a0e560bea125c75d8cc5cd46caaac7df 100644
--- a/tests/unit/test_layer.py
+++ b/tests/unit/test_layer.py
@@ -170,7 +170,9 @@ class TestRouteLayer:
     def test_list_route_names(self, openai_encoder, routes):
         route_layer = RouteLayer(encoder=openai_encoder, routes=routes)
         route_names = route_layer.list_route_names()
-        assert set(route_names) == {route.name for route in routes}, "The list of route names should match the names of the routes added."
+        assert set(route_names) == {
+            route.name for route in routes
+        }, "The list of route names should match the names of the routes added."
 
     def test_remove_route(self, openai_encoder, routes):
         route_layer = RouteLayer(encoder=openai_encoder, routes=routes)
@@ -178,12 +180,18 @@ class TestRouteLayer:
         route_to_remove = routes[0].name
         route_layer.remove(route_to_remove)
         # Ensure the route is no longer in the route layer
-        assert route_to_remove not in route_layer.list_route_names(), "The route should be removed from the route layer."
+        assert (
+            route_to_remove not in route_layer.list_route_names()
+        ), "The route should be removed from the route layer."
         # Ensure the route is no longer in the index or categories
-        assert route_to_remove not in route_layer.categories, "The route should be removed from the categories."
+        assert (
+            route_to_remove not in route_layer.categories
+        ), "The route should be removed from the categories."
         # Ensure the route's utterances are no longer in the index
         for utterance in routes[0].utterances:
-            assert utterance not in route_layer.index, "The route's utterances should be removed from the index."
+            assert (
+                utterance not in route_layer.index
+            ), "The route's utterances should be removed from the index."
 
     def test_remove_route_not_found(self, openai_encoder, routes):
         route_layer = RouteLayer(encoder=openai_encoder, routes=routes)
@@ -191,7 +199,9 @@ class TestRouteLayer:
         non_existent_route = "non-existent-route"
         with pytest.raises(ValueError) as excinfo:
             route_layer.remove(non_existent_route)
-        assert str(excinfo.value) == f"Route `{non_existent_route}` not found", "Attempting to remove a non-existent route should raise a ValueError."
+        assert (
+            str(excinfo.value) == f"Route `{non_existent_route}` not found"
+        ), "Attempting to remove a non-existent route should raise a ValueError."
 
     def test_add_multiple_routes(self, openai_encoder, routes):
         route_layer = RouteLayer(encoder=openai_encoder)