Fix format

src/testing/graph_topology_testing.rs

@@ -578,7 +578,7 @@ macro_rules! graph_topology_tests {
             }
         }
 
-               #[test]
+        #[test]
         fn incident_vertices_incidences_consistency() {
             let (graph, _, _, _) = make_test_graph();
             for u in graph.vertices() {