fix: minor bugs

Signed-off-by: syaojun <libevent@yeah.net>

Author: SYaoJun

cpp/test/test_graph.cc

@@ -131,7 +131,7 @@ TEST_CASE_METHOD(GlobalFixture, "Graph") {
 
     auto vertices = std::make_shared<VerticesCollection>(
         vertex_info, graph_info->GetPrefix());
-    REQUIRE(vertices.size() == expectedTotalCount);
+    REQUIRE(vertices->size() == expectedTotalCount);
     std::cout << "total size " << vertices->size() << std::endl;
 
     auto filter_female =