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| -rw-r--r-- | tests/bot/cogs/moderation/test_incidents.py | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/tests/bot/cogs/moderation/test_incidents.py b/tests/bot/cogs/moderation/test_incidents.py index 4e6dfd5f7..55b15ec9e 100644 --- a/tests/bot/cogs/moderation/test_incidents.py +++ b/tests/bot/cogs/moderation/test_incidents.py @@ -520,6 +520,134 @@ class TestResolveMessage(TestIncidents): self.assertIsNone(await self.cog_instance.resolve_message(123)) +@patch("bot.constants.Channels.incidents", 123) +class TestOnRawReactionAdd(TestIncidents): + """ + Tests for the `Incidents.on_raw_reaction_add` listener. + + Writing tests for this listener comes with additional complexity due to the listener + awaiting the `crawl_task` task. See `asyncSetUp` for further details, which attempts + to make unit testing this function possible. + """ + + def setUp(self): + """ + Prepare & assign `payload` attribute. + + This attribute represents an *ideal* payload which will not be rejected by the + listener. As each test will receive a fresh instance, it can be mutated to + observe how the listener's behaviour changes with different attributes on + the passed payload. + """ + super().setUp() # Ensure `cog_instance` is assigned + + self.payload = MagicMock( + discord.RawReactionActionEvent, + channel_id=123, # Patched at class level + message_id=456, + member=MockMember(bot=False), + emoji="reaction", + ) + + async def asyncSetUp(self): # noqa: N802 + """ + Prepare an empty task and assign it as `crawl_task`. + + It appears that the `unittest` framework does not provide anything for mocking + asyncio tasks. An `AsyncMock` instance can be called and then awaited, however, + it does not provide the `done` method or any other parts of the `asyncio.Task` + interface. + + Although we do not need to make any assertions about the task itself while + testing the listener, the code will still await it and call the `done` method, + and so we must inject something that will not fail on either action. + + Note that this is done in an `asyncSetUp`, which runs after `setUp`. + The justification is that creating an actual task requires the event + loop to be ready, which is not the case in the `setUp`. + """ + mock_task = asyncio.create_task(AsyncMock()()) # Mock async func, then a coro + self.cog_instance.crawl_task = mock_task + + async def test_on_raw_reaction_add_wrong_channel(self): + """ + Events outside of #incidents will be ignored. + + We check this by asserting that `resolve_message` was never queried. + """ + self.payload.channel_id = 0 + self.cog_instance.resolve_message = AsyncMock() + + await self.cog_instance.on_raw_reaction_add(self.payload) + self.cog_instance.resolve_message.assert_not_called() + + async def test_on_raw_reaction_add_user_is_bot(self): + """ + Events dispatched by bot accounts will be ignored. + + We check this by asserting that `resolve_message` was never queried. + """ + self.payload.member = MockMember(bot=True) + self.cog_instance.resolve_message = AsyncMock() + + await self.cog_instance.on_raw_reaction_add(self.payload) + self.cog_instance.resolve_message.assert_not_called() + + async def test_on_raw_reaction_add_message_doesnt_exist(self): + """ + Listener gracefully handles the case where `resolve_message` gives None. + + We check this by asserting that `process_event` was never called. + """ + self.cog_instance.process_event = AsyncMock() + self.cog_instance.resolve_message = AsyncMock(return_value=None) + + await self.cog_instance.on_raw_reaction_add(self.payload) + self.cog_instance.process_event.assert_not_called() + + async def test_on_raw_reaction_add_message_is_not_an_incident(self): + """ + The event won't be processed if the related message is not an incident. + + This is an edge-case that can happen if someone manually leaves a reaction + on a pinned message, or a comment. + + We check this by asserting that `process_event` was never called. + """ + self.cog_instance.process_event = AsyncMock() + self.cog_instance.resolve_message = AsyncMock(return_value=MockMessage()) + + with patch("bot.cogs.moderation.incidents.is_incident", MagicMock(return_value=False)): + await self.cog_instance.on_raw_reaction_add(self.payload) + + self.cog_instance.process_event.assert_not_called() + + async def test_on_raw_reaction_add_valid_event_is_processed(self): + """ + If the reaction event is valid, it is passed to `process_event`. + + This is the case when everything goes right: + * The reaction was placed in #incidents, and not by a bot + * The message was found successfully + * The message qualifies as an incident + + Additionally, we check that all arguments were passed as expected. + """ + incident = MockMessage(id=1) + + self.cog_instance.process_event = AsyncMock() + self.cog_instance.resolve_message = AsyncMock(return_value=incident) + + with patch("bot.cogs.moderation.incidents.is_incident", MagicMock(return_value=True)): + await self.cog_instance.on_raw_reaction_add(self.payload) + + self.cog_instance.process_event.assert_called_with( + "reaction", # Defined in `self.payload` + incident, + self.payload.member, + ) + + class TestOnMessage(TestIncidents): """ Tests for the `Incidents.on_message` listener. |