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"""
Copyright (c) 2023 Proton AG
This file is part of Proton VPN.
Proton VPN is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Proton VPN is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with ProtonVPN. If not, see <https://www.gnu.org/licenses/>.
"""
from unittest.mock import Mock, AsyncMock
from proton.vpn.connection.publisher import Publisher
import pytest
@pytest.fixture
def subscriber():
return Mock()
def test_register_registers_subscriber_if_it_was_not_registered_yet(subscriber):
publisher = Publisher()
publisher.register(subscriber)
assert publisher.is_subscriber_registered(subscriber)
def test_register_does_nothing_if_the_subscriber_was_already_registered():
subscriber = Mock()
publisher = Publisher(subscribers=[subscriber])
publisher.register(subscriber)
assert publisher.number_of_subscribers == 1
def test_register_raises_value_error_if_subscriber_is_not_callable():
publisher = Publisher()
with pytest.raises(ValueError):
publisher.register(None)
def test_unregister_unregisters_subscriber_if_it_was_already_registered(subscriber):
publisher = Publisher(subscribers=[subscriber])
publisher.unregister(subscriber)
assert not publisher.is_subscriber_registered(subscriber)
def test_unregister_does_nothing_if_subscriber_was_never_registered():
publisher = Publisher()
publisher.unregister(Mock())
assert publisher.number_of_subscribers == 0
@pytest.mark.asyncio
async def test_notify_notifies_all_registered_subscribers():
subscribers = [Mock(), AsyncMock()]
publisher = Publisher(subscribers=subscribers)
publisher.notify("arg1", arg2="arg2")
for subscriber in subscribers:
subscriber.assert_called_with("arg1", arg2="arg2")
@pytest.mark.asyncio
async def test_notify_catches_and_logs_exceptions_when_notifying_subscribers(caplog):
subscribers = [Mock(side_effect=RuntimeError("Bad stuff")), Mock()]
publisher = Publisher(subscribers=subscribers)
publisher.notify("foo")
# Assert that, even though the first subscriber raised a RuntimeError,
# the second one was also notified.
for subscriber in subscribers:
subscriber.assert_called_with("foo")
# Assert that the error was logged.
errors = [record for record in caplog.records if record.levelname == "ERROR"]
assert errors
assert errors[0].msg.startswith("An error occurred notifying subscriber")
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