fix tests

Author: sydney-runkle

libs/langchain_v1/langchain/agents/middleware/todo.py

@@ -197,7 +197,7 @@ def wrap_model_call(
         if request.system_message is not None:
             new_system_content = [
                 *request.system_message.content_blocks,
-                {"type": "text", "text": self.system_prompt},
+                {"type": "text", "text": f"\n\n{self.system_prompt}"},
             ]
         else:
             new_system_content = [{"type": "text", "text": self.system_prompt}]
@@ -215,7 +215,7 @@ async def awrap_model_call(
         if request.system_message is not None:
             new_system_content = [
                 *request.system_message.content_blocks,
-                {"type": "text", "text": self.system_prompt},
+                {"type": "text", "text": f"\n\n{self.system_prompt}"},
             ]
         else:
             new_system_content = [{"type": "text", "text": self.system_prompt}]

libs/langchain_v1/tests/unit_tests/agents/model.py

@@ -59,7 +59,7 @@ def _generate(
                 content_obj = self.structured_response
             message = AIMessage(content=json.dumps(content_obj), id=str(self.index))
         else:
-            messages_string = "-".join([m.content for m in messages])
+            messages_string = "-".join([m.text for m in messages])
             message = AIMessage(
                 content=messages_string,
                 id=str(self.index),