Prepare for unittest

Create the basic directories and files needed for unittest.

tests/lib/alertmanager_api/test_silence.py

@@ -0,0 +1,20 @@
+from unittest.mock import MagicMock, patch
+
+from structs.alertmanager.silence_details import SilenceDetails
+from alertmanager_api.silence import AlertManagerAPI
+
+
+@patch("alertmanager_api.silence.requests.post")
+def test_schedule_silence_sucess(mock_post):
+    alertmanager_account = MagicMock()
+    class_instance = AlertManagerAPI(alertmanager_account)
+
+    silence = SilenceDetails("hostname", "starttitme", "endtime", "author", "comment")
+
+    mock_response = MagicMock()
+    mock_response.status_code = 201
+    mock_post.return_value = mock_response
+
+    class_instance.schedule_silence(silence)
+
+    mock_post.assert_called_once()