intermittent commit

tests/test_smtp_helpers.py

@@ -0,0 +1,48 @@
+from __future__ import annotations
+
+import unittest
+
+from govoplan_mail.backend.config import SmtpConfig
+from govoplan_mail.backend.sending.smtp import (
+    SmtpConfigurationError,
+    _prepare_smtp_send,
+    _smtp_send_result,
+)
+
+
+class SmtpSendHelperTests(unittest.TestCase):
+    def test_prepare_smtp_send_validates_envelope(self):
+        config = SmtpConfig(host="smtp.example.org", port=587, security="starttls")
+        with self.assertRaisesRegex(SmtpConfigurationError, "envelope sender"):
+            _prepare_smtp_send(smtp_config=config, envelope_from="", envelope_recipients=["user@example.org"])
+        with self.assertRaisesRegex(SmtpConfigurationError, "recipient"):
+            _prepare_smtp_send(smtp_config=config, envelope_from="sender@example.org", envelope_recipients=[""])
+
+    def test_prepare_smtp_send_filters_blank_recipients(self):
+        config = SmtpConfig(host="smtp.example.org", port=587, security="starttls")
+        self.assertEqual(
+            _prepare_smtp_send(
+                smtp_config=config,
+                envelope_from="sender@example.org",
+                envelope_recipients=["", "user@example.org"],
+            ),
+            ("smtp.example.org", 587, ["user@example.org"]),
+        )
+
+    def test_smtp_send_result_decodes_refused_recipients(self):
+        config = SmtpConfig(host="smtp.example.org", port=587, security="starttls")
+        result = _smtp_send_result(
+            smtp_config=config,
+            host="smtp.example.org",
+            port=587,
+            envelope_from="sender@example.org",
+            envelope_recipients=["ok@example.org", "blocked@example.org"],
+            refused={"blocked@example.org": (550, b"blocked")},
+        )
+        self.assertEqual(result.accepted_count, 1)
+        self.assertEqual(result.refused_recipients["blocked@example.org"], (550, "blocked"))
+
+
+if __name__ == "__main__":
+    unittest.main()
+