diff --git a/tests/test_models.py b/tests/test_models.py
index e69de29bb..84d04f6d7 100644
--- a/tests/test_models.py
+++ b/tests/test_models.py
@@ -0,0 +1,10 @@
+import unittest
+from aider.models import Model
+
+class TestModels(unittest.TestCase):
+    def test_max_context_tokens(self):
+        model = Model('gpt-3.5')
+        self.assertEqual(model.max_context_tokens, 4*1024)
+
+if __name__ == '__main__':
+    unittest.main()