Add unittest for get_last_login_timestamp

... starting with a x86_64 wtmp example file

utils/test/test-notify.py

@@ -0,0 +1,31 @@
+#! /usr/bin/python3
+# ------------------------------------------------------------------
+#
+#    Copyright (C) 2021 Christian Boltz <apparmor@cboltz.de>
+#
+#    This program is free software; you can redistribute it and/or
+#    modify it under the terms of version 2 of the GNU General Public
+#    License published by the Free Software Foundation.
+#
+# ------------------------------------------------------------------
+
+import unittest
+from common_test import AATest, setup_all_loops
+
+from apparmor.notify import get_last_login_timestamp
+
+class TestGet_last_login_timestamp(AATest):
+    tests = [
+        (['wtmp-x86_64',        'root'      ], 1635070346),  # Sun Oct 24 12:12:26 CEST 2021
+        (['wtmp-x86_64',        'whoever'   ], 0),
+    ]
+
+    def _run_test(self, params, expected):
+        filename, user = params
+        filename = 'wtmp-examples/%s' % filename
+        self.assertEqual(get_last_login_timestamp(user, filename), expected)
+
+
+setup_all_loops(__name__)
+if __name__ == '__main__':
+    unittest.main(verbosity=1)