From 7b9e71fbb1364a416e5239b45434874fed9eb857 Mon Sep 17 00:00:00 2001 From: MarkKoz Date: Mon, 10 Feb 2020 16:31:07 -0800 Subject: Tests: create TestCase subclass with a permissions check assertion The subclass will contain assertions that are useful for testing Discord commands. The currently included assertion tests that a command will raise a MissingPermissions exception if the author lacks permissions. --- tests/base.py | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'tests/base.py') diff --git a/tests/base.py b/tests/base.py index 029a249ed..88693f382 100644 --- a/tests/base.py +++ b/tests/base.py @@ -1,6 +1,12 @@ import logging import unittest from contextlib import contextmanager +from typing import Dict + +import discord +from discord.ext import commands + +from tests import helpers class _CaptureLogHandler(logging.Handler): @@ -65,3 +71,31 @@ class LoggingTestCase(unittest.TestCase): standard_message = self._truncateMessage(base_message, record_message) msg = self._formatMessage(msg, standard_message) self.fail(msg) + + +class CommandTestCase(unittest.TestCase): + """TestCase with additional assertions that are useful for testing Discord commands.""" + + @helpers.async_test + async def assertHasPermissionsCheck( + self, + cmd: commands.Command, + permissions: Dict[str, bool], + ) -> None: + """ + Test that `cmd` raises a `MissingPermissions` exception if author lacks `permissions`. + + Every permission in `permissions` is expected to be reported as missing. In other words, do + not include permissions which should not raise an exception along with those which should. + """ + # Invert permission values because it's more intuitive to pass to this assertion the same + # permissions as those given to the check decorator. + permissions = {k: not v for k, v in permissions.items()} + + ctx = helpers.MockContext() + ctx.channel.permissions_for.return_value = discord.Permissions(**permissions) + + with self.assertRaises(commands.MissingPermissions) as cm: + await cmd.can_run(ctx) + + self.assertCountEqual(permissions.keys(), cm.exception.missing_perms) -- cgit v1.2.3