diff --git a/tests/model_test.py b/tests/model_test.py
new file mode 100644
index 000000000..5d6188af2
--- /dev/null
+++ b/tests/model_test.py
@@ -0,0 +1,92 @@
+# -*- coding: utf-8 -*-
+"""
+Unit tests for model wrapper classes and functions
+"""
+
+from typing import Any
+import unittest
+
+from agentscope.models import (
+    ModelResponse,
+    ModelWrapperBase,
+    OpenAIChatWrapper,
+    PostAPIModelWrapperBase,
+    get_model,
+    read_model_configs,
+    load_model_by_id,
+    clear_model_configs,
+)
+
+
+class TestModelWrapperSimple(ModelWrapperBase):
+    """A simple model wrapper class for test usage"""
+
+    def __call__(self, *args: Any, **kwargs: Any) -> ModelResponse:
+        return ModelResponse(text=self.model_id)
+
+
+class BasicModelTest(unittest.TestCase):
+    """Test cases for basic model wrappers"""
+
+    def test_model_registry(self) -> None:
+        """Test the automatic registration mechanism of model wrapper."""
+        # get model wrapper class by class name
+        self.assertEqual(
+            get_model(model_type="TestModelWrapperSimple"),
+            TestModelWrapperSimple,
+        )
+        # get model wrapper class by alias
+        self.assertEqual(get_model(model_type="openai"), OpenAIChatWrapper)
+        # return PostAPIModelWrapperBase if model_type is not supported
+        self.assertEqual(
+            get_model(model_type="unknown_model_wrapper"),
+            PostAPIModelWrapperBase,
+        )
+
+    def test_load_model_configs(self) -> None:
+        """Test to load model configs"""
+        configs = [
+            {
+                "model_type": "openai",
+                "model_id": "gpt-4",
+                "model": "gpt-4",
+                "api_key": "xxx",
+                "organization": "xxx",
+                "generate_args": {"temperature": 0.5},
+            },
+            {
+                "model_type": "post_api",
+                "model_id": "my_post_api",
+                "api_url": "https://xxx",
+                "headers": {},
+                "json_args": {},
+            },
+        ]
+        # load a list of configs
+        read_model_configs(configs=configs, clear_existing=True)
+        model = load_model_by_id("gpt-4")
+        self.assertEqual(model.model_id, "gpt-4")
+        model = load_model_by_id("my_post_api")
+        self.assertEqual(model.model_id, "my_post_api")
+        self.assertRaises(ValueError, load_model_by_id, "non_existent_id")
+
+        # load a single config
+        read_model_configs(configs=configs[0], clear_existing=True)
+        model = load_model_by_id("gpt-4")
+        self.assertEqual(model.model_id, "gpt-4")
+        self.assertRaises(ValueError, load_model_by_id, "my_post_api")
+
+        # automatically detect model with the same id
+        self.assertRaises(ValueError, read_model_configs, configs[0])
+        read_model_configs(
+            configs={
+                "model_type": "TestModelWrapperSimple",
+                "model_id": "test_model_wrapper",
+                "args": {},
+            },
+        )
+        test_model = load_model_by_id("test_model_wrapper")
+        response = test_model()
+        self.assertEqual(response.text, "test_model_wrapper")
+        clear_model_configs()
+        self.assertRaises(ValueError, load_model_by_id, "test_model_wrapper")