test(notifier): ✅ add tests for notifier module

tests/test_notifier.py

@@ -0,0 +1,46 @@
+import os
+
+from unittest.mock import MagicMock
+
+import pytest
+
+from logwatcher.notifier import send_n2_report
+
+
+def mock_get_or_create_folder(account, folder_name):  # noqa: D103
+    return folder_name
+
+
+@pytest.mark.parametrize("vars", [("N2_REPORT_SUBJECT", "N2_REPORT_RECIPIENTS"), ("N2_REPORT_RECIPIENTS", "N2_REPORT_SUBJECT")])
+def test_send_n2_report_missing_recipients_env(vars, monkeypatch, ):
+    """Assert that missing values in environmnent file raises KeyError."""
+    monkeypatch.delenv("N2_REPORT_RECIPIENTS")
+    monkeypatch.delenv("N2_REPORT_SUBJECT")
+    monkeypatch.setenv(vars[0], "test")
+    
+    with pytest.raises(KeyError) as err:
+        send_n2_report(account=MagicMock(), summary="summary", n2_log_file=MagicMock())
+
+    assert vars[1] in err.value.args
+
+
+@pytest.mark.parametrize("recipients", ["mail@client.fr", "mail@ client.fr  ", "mail1@client.fr,mail2@client.fr,mail3@client.fr", "mail1@client.fr , mail2@client.fr ,  mail3@client.fr"])
+def test_send_n2_report_multiple_recipients(recipients, make_mock_account, monkeypatch):
+    """Assert gathering multiple account as recipients from env file is valid.
+    
+    Tests with value having space characters.
+    Mails must be seperated by a comma.
+
+    Args:
+        recipients: e-mail recipients in one string
+        make_mock_account: return a fake account used for tests
+        monkeypatch: used to change environment variables and functions accross the script
+    
+    """
+    monkeypatch.setenv("N2_REPORT_SUBJECT", "test")
+    monkeypatch.setenv("N2_REPORT_RECIPIENTS", "mail@client.fr")
+
+    with monkeypatch.context() as m:
+        m.setattr("logwatcher.notifier.get_or_create_folder", mock_get_or_create_folder)
+        m.setattr("logwatcher.notifier.Message.send", MagicMock(id="1", return_value=None))
+        send_n2_report(account=make_mock_account(), summary="summary", n2_log_file=MagicMock())