Add Telegram service tests

src/tests/notification/test_telegram_service.py

@@ -0,0 +1,74 @@
+from unittest.mock import Mock, patch
+
+import pytest
+import requests
+
+from fenn.notification.services.telegram import Telegram
+
+
+def test_telegram_message():
+    """Test Telegram.send_notification"""
+    # Bypass __init__ to avoid KeyStore singleton
+    telegram = object.__new__(Telegram)
+    telegram._telegram_api_url = "https://api.telegram.org/bot123/sendMessage"
+    telegram._chat_id = Mock()  # chat_id is read from .env in constructor
+    telegram._parse_mode = None
+
+    with patch("requests.post") as mock_post:
+        mock_response = Mock()
+        mock_response.raise_for_status.return_value = None
+        mock_post.return_value = mock_response
+
+        telegram.send_notification("hello telegram test")
+
+        mock_post.assert_called_once_with(
+            "https://api.telegram.org/bot123/sendMessage",
+            json={
+                "chat_id": telegram._chat_id,
+                "text": "hello telegram test",
+                "disable_notification": False,
+            },
+            timeout=10,
+        )
+
+
+def test_telegram_message_with_parse_mode():
+    """Test Telegram.send_notification with parse_mode"""
+    telegram = object.__new__(Telegram)
+    telegram._telegram_api_url = "https://api.telegram.org/bot123/sendMessage"
+    telegram._chat_id = Mock()  # chat_id is read from .env in constructor
+    telegram._parse_mode = "Markdown"
+
+    with patch("requests.post") as mock_post:
+        mock_response = Mock()
+        mock_response.raise_for_status.return_value = None
+        mock_post.return_value = mock_response
+
+        telegram.send_notification("*hello* telegram test")
+
+        mock_post.assert_called_once_with(
+            "https://api.telegram.org/bot123/sendMessage",
+            json={
+                "chat_id": telegram._chat_id,
+                "text": "*hello* telegram test",
+                "disable_notification": False,
+                "parse_mode": "Markdown",
+            },
+            timeout=10,
+        )
+
+
+def test_telegram_send_notification_error():
+    """Test Telegram.send_notification error handling"""
+    telegram = object.__new__(Telegram)
+    telegram._telegram_api_url = "https://api.telegram.org/bot123/sendMessage"
+    telegram._chat_id = Mock()  # chat_id is read from .env in constructor
+    telegram._parse_mode = None
+
+    with patch("requests.post") as mock_post:
+        mock_post.side_effect = requests.exceptions.RequestException("Connection error")
+
+        with pytest.raises(requests.exceptions.RequestException) as exc_info:
+            telegram.send_notification("hello telegram test")
+
+        assert "Failed to send Telegram notification" in str(exc_info.value)