test: use smtplib.SMTP[_SSL] timeout = notifications.smtp-timeout

A new option has been added for configuration of SMTP timeout:
- notifications.smtp-timeout

During tests, we can change this timeout to be small, so we aren't
depending on hardware-based RNG to pass the timeout.

Without a timeout, users can run into a long-running test for no
particular reason.

Signed-off-by: Kevin Morris <kevr@0cost.org>

aurweb/scripts/notify.py

@@ -104,7 +104,10 @@ class Notification:
                     False: smtplib.SMTP,
                     True: smtplib.SMTP_SSL,
                 }
-                server = classes[use_ssl](server_addr, server_port)
+                smtp_timeout = aurweb.config.getint("notifications",
+                                                    "smtp-timeout")
+                server = classes[use_ssl](server_addr, server_port,
+                                          timeout=smtp_timeout)
 
                 if use_starttls:
                     server.ehlo()

aurweb/testing/smtp.py

@@ -36,6 +36,9 @@ class FakeSMTP:
     def quit(self) -> None:
         self.quit_count += 1
 
+    def __call__(self, *args, **kwargs) -> "FakeSMTP":
+        return self
+
 
 class FakeSMTP_SSL(FakeSMTP):
     """ A fake version of smtplib.SMTP_SSL used for testing. """