diff --git a/tests/basic/test_models.py b/tests/basic/test_models.py
index d46a721db..a7638753f 100644
--- a/tests/basic/test_models.py
+++ b/tests/basic/test_models.py
@@ -1,9 +1,63 @@
 import unittest
+from unittest.mock import patch
+import json
+from pathlib import Path
 
-from aider.models import Model
+from aider.models import Model, get_model_info
 
 
 class TestModels(unittest.TestCase):
+    @patch('aider.models.Path.home')
+    @patch('aider.models.time.time')
+    @patch('aider.models.Path.stat')
+    @patch('aider.models.Path.read_text')
+    def test_get_model_info_cached(self, mock_read_text, mock_stat, mock_time, mock_home):
+        # Setup mock
+        mock_home.return_value = Path('/mock/home')
+        mock_time.return_value = 1000000
+        mock_stat.return_value.st_mtime = 999999  # File modified 1 second ago
+        mock_read_text.return_value = json.dumps({"gpt-3.5-turbo": {"max_input_tokens": 16385}})
+
+        # Test
+        info = get_model_info("gpt-3.5-turbo")
+        self.assertEqual(info, {"max_input_tokens": 16385})
+
+    @patch('aider.models.Path.home')
+    @patch('aider.models.time.time')
+    @patch('aider.models.Path.stat')
+    @patch('aider.models.requests.get')
+    def test_get_model_info_fetch(self, mock_get, mock_stat, mock_time, mock_home):
+        # Setup mock
+        mock_home.return_value = Path('/mock/home')
+        mock_time.return_value = 1000000
+        mock_stat.return_value.st_mtime = 900000  # File modified a long time ago
+        mock_get.return_value.status_code = 200
+        mock_get.return_value.json.return_value = {"gpt-4": {"max_input_tokens": 8192}}
+
+        # Test
+        info = get_model_info("gpt-4")
+        self.assertEqual(info, {"max_input_tokens": 8192})
+
+    @patch('aider.models.Path.home')
+    @patch('aider.models.time.time')
+    @patch('aider.models.Path.stat')
+    @patch('aider.models.requests.get')
+    @patch('aider.models.litellm.get_model_info')
+    def test_get_model_info_fallback(self, mock_litellm, mock_get, mock_stat, mock_time, mock_home):
+        # Setup mock
+        mock_home.return_value = Path('/mock/home')
+        mock_time.return_value = 1000000
+        mock_stat.return_value.st_mtime = 900000  # File modified a long time ago
+        mock_get.return_value.status_code = 404  # Simulate failed request
+        mock_litellm.return_value = {"max_input_tokens": 4096}
+
+        # Test
+        info = get_model_info("unknown-model")
+        self.assertEqual(info, {"max_input_tokens": 4096})
+
+    def test_get_model_info_nonexistent(self):
+        info = get_model_info("non-existent-model")
+        self.assertEqual(info, {})
     def test_max_context_tokens(self):
         model = Model("gpt-3.5-turbo")
         self.assertEqual(model.info["max_input_tokens"], 16385)