Change all graph tests to pub to avoid unused-warnings

src/testing/graph_topology_addition_deletion_testing.rs

@@ -23,7 +23,7 @@ macro_rules! graph_topology_addition_deletion_tests {
     };
 }
 
-pub(crate) fn delete_vertex_add_vertex<G: GraphTopologyDeletion + GraphTopologyAddition>()
+pub fn delete_vertex_add_vertex<G: GraphTopologyDeletion + GraphTopologyAddition>()
 where
     G::Vertex: Debug,
 {
@@ -46,7 +46,7 @@ where
     );
 }
 
-pub(crate) fn delete_edge_add_edge<G: GraphTopologyDeletion + GraphTopologyAddition>()
+pub fn delete_edge_add_edge<G: GraphTopologyDeletion + GraphTopologyAddition>()
 where
     G::Edge: Debug,
 {
@@ -60,3 +60,4 @@ where
     );
     assert_eq!(graph.edge_count(), 1, "unexpected edge count after re-add");
 }
+