fix: Adjusted holder type for model binding

Signed-off-by: Yash Pandey (YP) <[email protected]>

Author: EmperorYP7

bindings/python/py_config.cpp

@@ -21,7 +21,7 @@
 namespace py = pybind11;
 
 void bindPyConfig(py::module &m) {
-    py::class_<casbin::Config>(m, "Config")
+    py::class_<casbin::Config, std::shared_ptr<casbin::Config>>(m, "Config")
         .def(py::init<>())
         .def(py::init<const std::string&>())
         .def_static("NewConfig", &casbin::Config::NewConfig, R"doc(

casbin/config/config.h

@@ -64,6 +64,8 @@ class Config : public ConfigInterface {
 
         bool GetBool(std::string_view key);
 
+        Config();
+
         Config(const std::string& conf_name);
 
         int GetInt(std::string_view key);

tests/python/test_model.py

@@ -45,9 +45,9 @@ def test_NewModelFromString(self):
         self.assertIsNotNone(model)
 
     def test_LoadModelFromConfig(self):
-        # config = casbin.Config(basic_model_path)
-        # model = casbin.Model.NewModel()
-        # casbin.LoadModelFromConfig(model, basic_config)
+        basic_config = casbin.Config.NewConfig(basic_model_path)
+        model = casbin.Model.NewModel()
+        model.LoadModelFromConfig(basic_config)
         # model = casbin.Model.NewModel()
         # config = casbin.Config.NewConfigFromText("")
         # model.LoadModelFromConfig(config)