CLI: lazy load conversation for /new command (#11601)

Co-authored-by: openhands <openhands@all-hands.dev>

openhands-cli/openhands_cli/agent_chat.py

@@ -143,8 +143,9 @@ def run_cli_entry(resume_conversation_id: str | None = None) -> None:
             elif command == '/new':
                 try:
                     # Start a fresh conversation (no resume ID = new conversation)
-                    conversation = setup_conversation(conversation_id)
-                    runner = ConversationRunner(conversation)
+                    conversation_id = uuid.uuid4()
+                    runner = None
+                    conversation = None
                     display_welcome(conversation_id, resume=False)
                     print_formatted_text(
                         HTML('<green>✓ Started fresh conversation</green>')
@@ -195,7 +196,7 @@ def run_cli_entry(resume_conversation_id: str | None = None) -> None:
                 # Resume without new message
                 message = None
 
-            if not runner:
+            if not runner or not conversation:
                 conversation = setup_conversation(conversation_id)
                 runner = ConversationRunner(conversation)
             runner.process_message(message)

openhands-cli/tests/commands/test_new_command.py

@@ -2,12 +2,18 @@
 
 from unittest.mock import MagicMock, patch
 from uuid import UUID
+
 from prompt_toolkit.input.defaults import create_pipe_input
 from prompt_toolkit.output.defaults import DummyOutput
-from openhands_cli.setup import MissingAgentSpec, verify_agent_exists_or_setup_agent, setup_conversation
+
+from openhands_cli.setup import (
+    MissingAgentSpec,
+    verify_agent_exists_or_setup_agent,
+)
 from openhands_cli.user_actions import UserConfirmation
 
-@patch('openhands_cli.setup.load_agent_specs')
+
+@patch("openhands_cli.setup.load_agent_specs")
 def test_verify_agent_exists_or_setup_agent_success(mock_load_agent_specs):
     """Test that verify_agent_exists_or_setup_agent returns agent successfully."""
     # Mock the agent object
@@ -22,11 +28,10 @@ def test_verify_agent_exists_or_setup_agent_success(mock_load_agent_specs):
     mock_load_agent_specs.assert_called_once_with()
 
 
-@patch('openhands_cli.setup.SettingsScreen')
-@patch('openhands_cli.setup.load_agent_specs')
+@patch("openhands_cli.setup.SettingsScreen")
+@patch("openhands_cli.setup.load_agent_specs")
 def test_verify_agent_exists_or_setup_agent_missing_agent_spec(
-    mock_load_agent_specs,
-    mock_settings_screen_class
+    mock_load_agent_specs, mock_settings_screen_class
 ):
     """Test that verify_agent_exists_or_setup_agent handles MissingAgentSpec exception."""
     # Mock the SettingsScreen instance
@@ -37,7 +42,7 @@ def test_verify_agent_exists_or_setup_agent_missing_agent_spec(
     mock_agent = MagicMock()
     mock_load_agent_specs.side_effect = [
         MissingAgentSpec("Agent spec missing"),
-        mock_agent
+        mock_agent,
     ]
 
     # Call the function
@@ -51,14 +56,11 @@ def test_verify_agent_exists_or_setup_agent_missing_agent_spec(
     mock_settings_screen.configure_settings.assert_called_once_with(first_time=True)
 
 
-
-
-
-@patch('openhands_cli.agent_chat.exit_session_confirmation')
-@patch('openhands_cli.agent_chat.get_session_prompter')
-@patch('openhands_cli.agent_chat.setup_conversation')
-@patch('openhands_cli.agent_chat.verify_agent_exists_or_setup_agent')
-@patch('openhands_cli.agent_chat.ConversationRunner')
+@patch("openhands_cli.agent_chat.exit_session_confirmation")
+@patch("openhands_cli.agent_chat.get_session_prompter")
+@patch("openhands_cli.agent_chat.setup_conversation")
+@patch("openhands_cli.agent_chat.verify_agent_exists_or_setup_agent")
+@patch("openhands_cli.agent_chat.ConversationRunner")
 def test_new_command_resets_confirmation_mode(
     mock_runner_cls,
     mock_verify_agent,
@@ -74,27 +76,35 @@ def test_new_command_resets_confirmation_mode(
     mock_verify_agent.return_value = mock_agent
 
     # Mock conversation - only one is created when /new is called
-    conv1 = MagicMock(); conv1.id = UUID('aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa')
+    conv1 = MagicMock()
+    conv1.id = UUID("aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa")
     mock_setup_conversation.return_value = conv1
 
     # One runner instance for the conversation
-    runner1 = MagicMock(); runner1.is_confirmation_mode_active = True
+    runner1 = MagicMock()
+    runner1.is_confirmation_mode_active = True
     mock_runner_cls.return_value = runner1
 
     # Real session fed by a pipe (no interactive confirmation now)
-    from openhands_cli.user_actions.utils import get_session_prompter as real_get_session_prompter
+    from openhands_cli.user_actions.utils import (
+        get_session_prompter as real_get_session_prompter,
+    )
+
     with create_pipe_input() as pipe:
         output = DummyOutput()
         session = real_get_session_prompter(input=pipe, output=output)
         mock_get_session_prompter.return_value = session
 
         from openhands_cli.agent_chat import run_cli_entry
-        # Trigger /new, then /exit (exit will be auto-accepted)
-        for ch in "/new\r/exit\r":
+
+        # Trigger /new
+        # First user message should trigger runner creation
+        # Then /exit (exit will be auto-accepted)
+        for ch in "/new\rhello\r/exit\r":
             pipe.send_text(ch)
 
         run_cli_entry(None)
 
-    # Assert we created one runner for the conversation when /new was called
+    # Assert we created one runner for the conversation when a message was processed after /new
     assert mock_runner_cls.call_count == 1
     assert mock_runner_cls.call_args_list[0].args[0] is conv1