仍有bug

render_2D/tests/Plottable_Migration_Test.cpp

@@ -36,7 +36,7 @@ void render_once(Scene* scene) {
     static std::uint64_t sequence{1};
     Frame_2D frame{Frame_Identity{sequence++, 0}};
     scene->set_frame_callback([](Frame_2D*) {});
-    EXPECT_EQ(scene->render(&frame), Render_Scene_2D::Render_Result::completed);
+    EXPECT_TRUE(scene->render(&frame).has_value());
 }
 }