Fixed #26210 -- Prevented SMTP backend from trying to send mail after a connection failure.

1 files changed, 13 insertions, 0 deletions

diff --git a/tests/mail/tests.py b/tests/mail/tests.py
index 93e2127d63..e518ca46d5 100644
--- a/tests/mail/tests.py
+++ b/tests/mail/tests.py
@@ -1448,6 +1448,19 @@ class SMTPBackendTests(BaseEmailBackendTests, SMTPBackendTestsBase):
         finally:
             SMTP.send = send
 
+    def test_send_messages_after_open_failed(self):
+        """
+        send_messages() shouldn't try to send messages if open() raises an
+        exception after initializing the connection.
+        """
+        backend = smtp.EmailBackend()
+        # Simulate connection initialization success and a subsequent
+        # connection exception.
+        backend.connection = True
+        backend.open = lambda: None
+        email = EmailMessage('Subject', 'Content', 'from@example.com', ['to@example.com'])
+        self.assertEqual(backend.send_messages([email]), None)
+
 
 class SMTPBackendStoppedServerTest(SMTPBackendTestsBase):
     """