Aleksandr Meshchriakov
3d298ce352
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96 lines
2.9 KiB
Python
96 lines
2.9 KiB
Python
"""Tests for core signal dispatcher utilities."""
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from __future__ import annotations
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from apps.core.signals import (
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SignalDispatcher,
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on_post_delete,
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on_post_save,
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on_pre_delete,
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on_pre_save,
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signal_dispatcher,
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)
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from django.contrib.auth import get_user_model
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from django.db.models.signals import post_save
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from django.test import TestCase
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from tests.utils.fixtures import fake
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def _password() -> str:
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return fake.password(length=12, special_chars=False)
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class SignalDispatcherTest(TestCase):
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def test_register_connect_disconnect(self):
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dispatcher = SignalDispatcher()
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events: list[int] = []
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def handler(sender, instance, **_kwargs):
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events.append(instance.pk)
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dispatcher.register(
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signal=post_save,
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sender="user.User",
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handler=handler,
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description="track user create",
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)
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dispatcher.connect_all()
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user = get_user_model().objects.create_user(
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email=fake.email(), username=fake.user_name(), password=_password()
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)
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self.assertIn(user.pk, events)
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self.assertTrue(dispatcher.list_handlers())
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dispatcher.disconnect_all()
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self.assertFalse(dispatcher._connected)
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def test_connect_all_idempotent(self):
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dispatcher = SignalDispatcher()
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dispatcher.register(
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signal=post_save,
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sender="user.User",
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handler=lambda *_args, **_kwargs: None,
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)
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dispatcher.connect_all()
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dispatcher.connect_all()
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self.assertTrue(dispatcher._connected)
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def test_decorator_registers_handler(self):
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original_handlers = list(signal_dispatcher._handlers)
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original_connected = signal_dispatcher._connected
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events: list[int] = []
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try:
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signal_dispatcher._handlers = []
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signal_dispatcher._connected = False
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@on_post_save("user.User", description="decorator")
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def _handler(sender, instance, **_kwargs):
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events.append(instance.pk)
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@on_pre_save("user.User")
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def _pre_save(sender, instance, **_kwargs):
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return None
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@on_post_delete("user.User")
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def _post_delete(sender, instance, **_kwargs):
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return None
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@on_pre_delete("user.User")
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def _pre_delete(sender, instance, **_kwargs):
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return None
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signal_dispatcher.connect_all()
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user = get_user_model().objects.create_user(
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email=fake.email(), username=fake.user_name(), password=_password()
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)
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self.assertIn(user.pk, events)
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self.assertTrue(signal_dispatcher.list_handlers())
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finally:
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signal_dispatcher.disconnect_all()
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signal_dispatcher._handlers = original_handlers
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signal_dispatcher._connected = original_connected
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