echo-core/tests/test_router.py

"""Tests for src/router.py — message router."""

import pytest
from unittest.mock import MagicMock, patch

from src.router import route_message, _get_channel_config


@pytest.fixture(autouse=True)
def reset_router_config():
    """Reset the module-level _config before each test."""
    import src.router
    original = src.router._config
    src.router._config = None
    yield
    src.router._config = original


# --- /clear command ---


class TestClearCommand:
    @patch("src.router.clear_session")
    def test_clear_active_session(self, mock_clear):
        mock_clear.return_value = True
        response, is_cmd = route_message("ch-1", "user-1", "/clear")
        assert response == "Session cleared."
        assert is_cmd is True
        mock_clear.assert_called_once_with("ch-1")

    @patch("src.router.clear_session")
    def test_clear_no_session(self, mock_clear):
        mock_clear.return_value = False
        response, is_cmd = route_message("ch-1", "user-1", "/clear")
        assert response == "No active session."
        assert is_cmd is True


# --- /status command ---


class TestStatusCommand:
    @patch("src.router.get_active_session")
    def test_status_active_session(self, mock_get):
        mock_get.return_value = {
            "model": "sonnet",
            "session_id": "abcdef123456789",
            "message_count": 5,
        }
        response, is_cmd = route_message("ch-1", "user-1", "/status")
        assert is_cmd is True
        assert "sonnet" in response
        assert "abcdef123456" in response  # first 12 chars
        assert "5" in response

    @patch("src.router.get_active_session")
    def test_status_no_session(self, mock_get):
        mock_get.return_value = None
        response, is_cmd = route_message("ch-1", "user-1", "/status")
        assert response == "No active session."
        assert is_cmd is True


# --- Unknown command ---


class TestUnknownCommand:
    def test_unknown_command(self):
        response, is_cmd = route_message("ch-1", "user-1", "/foo")
        assert response == "Unknown command: /foo"
        assert is_cmd is True

    def test_unknown_command_with_args(self):
        response, is_cmd = route_message("ch-1", "user-1", "/bar baz")
        assert response == "Unknown command: /bar"
        assert is_cmd is True


# --- Regular messages ---


class TestRegularMessage:
    @patch("src.router._get_channel_config")
    @patch("src.router._get_config")
    @patch("src.router.send_message")
    def test_sends_to_claude(self, mock_send, mock_get_config, mock_chan_cfg):
        mock_send.return_value = "Hello from Claude!"
        mock_chan_cfg.return_value = None
        mock_cfg = MagicMock()
        mock_cfg.get.return_value = "sonnet"
        mock_get_config.return_value = mock_cfg

        response, is_cmd = route_message("ch-1", "user-1", "hello")
        assert response == "Hello from Claude!"
        assert is_cmd is False
        mock_send.assert_called_once_with("ch-1", "hello", model="sonnet")

    @patch("src.router.send_message")
    def test_model_override(self, mock_send):
        mock_send.return_value = "Response"
        response, is_cmd = route_message("ch-1", "user-1", "hello", model="opus")
        assert response == "Response"
        assert is_cmd is False
        mock_send.assert_called_once_with("ch-1", "hello", model="opus")

    @patch("src.router._get_channel_config")
    @patch("src.router._get_config")
    @patch("src.router.send_message")
    def test_claude_error(self, mock_send, mock_get_config, mock_chan_cfg):
        mock_send.side_effect = RuntimeError("API timeout")
        mock_chan_cfg.return_value = None
        mock_cfg = MagicMock()
        mock_cfg.get.return_value = "sonnet"
        mock_get_config.return_value = mock_cfg

        response, is_cmd = route_message("ch-1", "user-1", "hello")
        assert "Error: API timeout" in response
        assert is_cmd is False


# --- _get_channel_config ---


class TestGetChannelConfig:
    @patch("src.router._get_config")
    def test_finds_by_id(self, mock_get_config):
        mock_cfg = MagicMock()
        mock_cfg.get.return_value = {
            "general": {"id": "ch-1", "default_model": "haiku"},
            "dev": {"id": "ch-2"},
        }
        mock_get_config.return_value = mock_cfg

        result = _get_channel_config("ch-1")
        assert result == {"id": "ch-1", "default_model": "haiku"}

    @patch("src.router._get_config")
    def test_returns_none_when_not_found(self, mock_get_config):
        mock_cfg = MagicMock()
        mock_cfg.get.return_value = {"general": {"id": "ch-1"}}
        mock_get_config.return_value = mock_cfg

        result = _get_channel_config("ch-999")
        assert result is None


# --- Model resolution ---


class TestModelResolution:
    @patch("src.router._get_channel_config")
    @patch("src.router._get_config")
    @patch("src.router.send_message")
    def test_channel_default_model(self, mock_send, mock_get_config, mock_chan_cfg):
        """Channel config default_model takes priority."""
        mock_send.return_value = "ok"
        mock_chan_cfg.return_value = {"id": "ch-1", "default_model": "haiku"}

        route_message("ch-1", "user-1", "hello")
        mock_send.assert_called_once_with("ch-1", "hello", model="haiku")

    @patch("src.router._get_channel_config")
    @patch("src.router._get_config")
    @patch("src.router.send_message")
    def test_global_default_model(self, mock_send, mock_get_config, mock_chan_cfg):
        """Falls back to bot.default_model when channel has no default."""
        mock_send.return_value = "ok"
        mock_chan_cfg.return_value = {"id": "ch-1"}  # no default_model
        mock_cfg = MagicMock()
        mock_cfg.get.return_value = "opus"
        mock_get_config.return_value = mock_cfg

        route_message("ch-1", "user-1", "hello")
        mock_send.assert_called_once_with("ch-1", "hello", model="opus")

    @patch("src.router._get_channel_config")
    @patch("src.router._get_config")
    @patch("src.router.send_message")
    def test_sonnet_fallback(self, mock_send, mock_get_config, mock_chan_cfg):
        """Falls back to 'sonnet' when no channel or global default."""
        mock_send.return_value = "ok"
        mock_chan_cfg.return_value = None
        mock_cfg = MagicMock()
        mock_cfg.get.side_effect = lambda key, default=None: default
        mock_get_config.return_value = mock_cfg

        route_message("ch-1", "user-1", "hello")
        mock_send.assert_called_once_with("ch-1", "hello", model="sonnet")