feat: start mailbox evidence scanner

tests/test_parser.py

@@ -0,0 +1,43 @@
+from __future__ import annotations
+
+import unittest
+from pathlib import Path
+
+from email_connect.models import MessageClass
+from email_connect.parser import parse_message_file
+
+
+FIXTURES = Path(__file__).parent / "fixtures" / "mailbox"
+
+
+class ParserTests(unittest.TestCase):
+    def test_hard_bounce_maps_to_permanent_rejection(self) -> None:
+        _inbound, parsed, candidate = parse_message_file(FIXTURES / "hard_bounce.eml", mailbox_id="test")
+        self.assertEqual(parsed.message_class, MessageClass.HARD_BOUNCE)
+        self.assertIsNotNone(candidate)
+        self.assertEqual(candidate.event_type, "notification.endpoint.rejected_permanent")
+        self.assertEqual(candidate.assessment_subclass, "fail.hard_bounce")
+
+    def test_soft_bounce_maps_to_temporary_rejection(self) -> None:
+        _inbound, parsed, candidate = parse_message_file(FIXTURES / "soft_bounce.eml", mailbox_id="test")
+        self.assertEqual(parsed.message_class, MessageClass.SOFT_BOUNCE)
+        self.assertIsNotNone(candidate)
+        self.assertEqual(candidate.event_type, "notification.endpoint.rejected_temporary")
+
+    def test_out_of_office_stays_undef(self) -> None:
+        _inbound, parsed, candidate = parse_message_file(FIXTURES / "out_of_office.eml", mailbox_id="test")
+        self.assertEqual(parsed.message_class, MessageClass.OUT_OF_OFFICE)
+        self.assertIsNotNone(candidate)
+        self.assertEqual(candidate.assessment_category.value, "undef")
+        self.assertEqual(candidate.event_type, "interaction.out_of_office_received")
+
+    def test_human_reply_is_email_channel_success_only(self) -> None:
+        _inbound, parsed, candidate = parse_message_file(FIXTURES / "human_reply.eml", mailbox_id="test")
+        self.assertEqual(parsed.message_class, MessageClass.HUMAN_REPLY)
+        self.assertIsNotNone(candidate)
+        self.assertEqual(candidate.event_type, "interaction.reply_received")
+        self.assertEqual(candidate.assessment_subclass, "success.reply_received")
+
+
+if __name__ == "__main__":
+    unittest.main()