standard-tests: model param test

libs/standard-tests/langchain_tests/unit_tests/chat_models.py

@@ -85,6 +85,10 @@ class ChatModelTests(BaseStandardTests):
         """Initialization parameters for the chat model."""
         return {}
 
+    @property
+    def chat_model_model_param(self) -> dict:
+        return self.chat_model_params.get("model", "test-model-name")
+
     @property
     def standard_chat_model_params(self) -> dict:
         """:private:"""
@@ -521,6 +525,29 @@ class ChatModelUnitTests(ChatModelTests):
         )
         assert model is not None
 
+    def test_model_param_name(self) -> None:
+        """Tests model initializatiokn with a model= parameter. This should pass for all
+        integrations.
+
+        .. dropdown:: Troubleshooting
+
+            If this test fails, ensure that the model can be initialized with a
+            ``model`` parameter, and that the model parameter can be accessed as
+            ``.model``.
+        """
+        params = {
+            **self.standard_chat_model_params,
+            **self.chat_model_params,
+        }
+        if "model_name" in params:
+            params["model"] = params.pop("model_name")
+        else:
+            params["model"] = self.chat_model_model_param
+
+        model = self.chat_model_class(**params)
+        assert model is not None
+        assert model.model == params["model"]
+
     def test_init_from_env(self) -> None:
         """Test initialization from environment variables. Relies on the
         ``init_from_env_params`` property. Test is skipped if that property is not