feat: add get_activities and get_activity_details tools

tests/test_server.py

@@ -2,9 +2,11 @@ import json
 import os
 import queue
 import threading
+from datetime import date
 from unittest.mock import MagicMock, patch
 
 import pytest
+from garminconnect import GarminConnectAuthenticationError
 
 import server
 
@@ -84,3 +86,62 @@ def test_authenticate_missing_credentials():
         os.environ.pop("GARMIN_PASSWORD", None)
         result = server.authenticate()
     assert result == "GARMIN_EMAIL and GARMIN_PASSWORD environment variables are required."
+
+
+def test_get_activities_unauthenticated():
+    server._auth_state = "unauthenticated"
+    assert "Not authenticated" in server.get_activities()
+
+
+def test_get_activities_success():
+    server._auth_state = "authenticated"
+    server._client = MagicMock()
+    server._client.get_activities_by_date.return_value = [
+        {"activityId": "111", "activityType": {"typeKey": "running"}, "distance": 5000.0},
+        {"activityId": "222", "activityType": {"typeKey": "cycling"}, "distance": 20000.0},
+    ]
+    result = server.get_activities("2026-05-01", "2026-05-17", 20)
+    data = json.loads(result)
+    assert len(data) == 2
+    assert data[0]["activityId"] == "111"
+    server._client.get_activities_by_date.assert_called_once_with("2026-05-01", "2026-05-17")
+
+
+def test_get_activities_limit():
+    server._auth_state = "authenticated"
+    server._client = MagicMock()
+    server._client.get_activities_by_date.return_value = [{"activityId": str(i)} for i in range(10)]
+    data = json.loads(server.get_activities("2026-05-01", "2026-05-17", 3))
+    assert len(data) == 3
+
+
+def test_get_activities_defaults_to_today():
+    server._auth_state = "authenticated"
+    server._client = MagicMock()
+    server._client.get_activities_by_date.return_value = []
+    server.get_activities()
+    today = date.today().isoformat()
+    server._client.get_activities_by_date.assert_called_once_with(today, today)
+
+
+def test_get_activities_auth_error():
+    server._auth_state = "authenticated"
+    server._client = MagicMock()
+    server._client.get_activities_by_date.side_effect = GarminConnectAuthenticationError("auth")
+    assert "Authentication error" in server.get_activities()
+
+
+def test_get_activity_details_success():
+    server._auth_state = "authenticated"
+    server._client = MagicMock()
+    server._client.get_activity_details.return_value = {"activityId": "111", "laps": []}
+    data = json.loads(server.get_activity_details("111"))
+    assert data["activityId"] == "111"
+    server._client.get_activity_details.assert_called_once_with("111")
+
+
+def test_get_activity_details_error():
+    server._auth_state = "authenticated"
+    server._client = MagicMock()
+    server._client.get_activity_details.side_effect = Exception("not found")
+    assert "Error fetching activity details" in server.get_activity_details("999")