app-MAIL-temp/tests/test_mail_sender.py
Adrià Casajús 7ba9bcb9e2
Save unsent emails to disk to be resent later (#1022)
* Initial save to disk

* Store unsent messages to disk so they can be retried later

* Set back not sending emails

* Fixed decorator

* Add general exceptions to the catchall

* Have dummy server just to make sure

* Added several server test cases

* ADded tests for bounced and error status

* Moved dir creation to config parse time

* Set LOG.e

Co-authored-by: Adrià Casajús <adria.casajus@proton.ch>
2022-05-30 11:52:10 +02:00

116 lines
3.6 KiB
Python

import os
import tempfile
import threading
import socket
from email.message import Message
from random import random
from typing import Callable
import pytest
from aiosmtpd.controller import Controller
from app.email import headers
from app.mail_sender import mail_sender, SendRequest
from app import config
def create_dummy_send_request() -> SendRequest:
to_addr = f"to-{int(random())}@destination.com"
from_addr = f"from-{int(random())}@source.com"
msg = Message()
msg[headers.TO] = to_addr
msg[headers.FROM] = from_addr
msg[headers.SUBJECT] = f"Random subject {random()}"
msg.set_payload(f"Test content {random()}")
return SendRequest(
f"from-{int(random())}@envelope.com",
to_addr,
msg,
)
@mail_sender.store_emails_test_decorator
def test_mail_sender_save_to_mem():
send_request = create_dummy_send_request()
mail_sender.send(send_request, 0)
stored_emails = mail_sender.get_stored_emails()
assert len(stored_emails) == 1
assert stored_emails[0] == send_request
def close_on_connect_dummy_server() -> int:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind(("localhost", 0))
sock.listen()
port = sock.getsockname()[1]
def close_on_accept():
connection, _ = sock.accept()
connection.close()
sock.close()
threading.Thread(target=close_on_accept, daemon=True).start()
return port
def closed_dummy_server() -> int:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind(("localhost", 0))
sock.listen()
port = sock.getsockname()[1]
sock.close()
return port
def smtp_response_server(smtp_response: str) -> Callable[[], int]:
def inner():
empty_port = closed_dummy_server()
class ResponseHandler:
async def handle_DATA(self, server, session, envelope) -> str:
return smtp_response
controller = Controller(
ResponseHandler(), hostname="localhost", port=empty_port
)
controller.start()
return controller.server.sockets[0].getsockname()[1]
return inner
@pytest.mark.parametrize(
"server_fn",
[
close_on_connect_dummy_server,
closed_dummy_server,
smtp_response_server("421 Retry"),
smtp_response_server("500 error"),
],
)
def test_mail_sender_save_unsent_to_disk(server_fn):
original_postfix_server = config.POSTFIX_SERVER
config.POSTFIX_SERVER = "localhost"
config.NOT_SEND_EMAIL = False
config.POSTFIX_SUBMISSION_TLS = False
config.POSTFIX_PORT = server_fn()
with tempfile.TemporaryDirectory() as temp_dir:
config.SAVE_UNSENT_DIR = temp_dir
send_request = create_dummy_send_request()
mail_sender.send(send_request, 0)
found_files = os.listdir(temp_dir)
assert len(found_files) == 1
loaded_send_request = SendRequest.load_from_file(
os.path.join(temp_dir, found_files[0])
)
assert send_request.mail_options == loaded_send_request.mail_options
assert send_request.rcpt_options == loaded_send_request.rcpt_options
assert send_request.envelope_to == loaded_send_request.envelope_to
assert send_request.envelope_from == loaded_send_request.envelope_from
assert send_request.msg[headers.TO] == loaded_send_request.msg[headers.TO]
assert send_request.msg[headers.FROM] == loaded_send_request.msg[headers.FROM]
config.POSTFIX_SERVER = original_postfix_server
config.NOT_SEND_EMAIL = True