Migrate syncers test suite to Python 3.8

The test suite for the new role/member syncers used the "old"-style test suite with the helpers implemented for Python 3.7. I have migrated it to use the new Python 3.8 asyncio test helpers.

1 files changed, 2 insertions, 2 deletions

diff --git a/tests/base.py b/tests/base.py
index 21613110e..42174e911 100644
--- a/tests/base.py
+++ b/tests/base.py
@@ -1,4 +1,5 @@
 import logging
+import unittest
 from contextlib import contextmanager
 from typing import Dict
 
@@ -77,10 +78,9 @@ class LoggingTestsMixin:
             self.fail(msg)
 
 
-class CommandTestCase(unittest.TestCase):
+class CommandTestCase(unittest.IsolatedAsyncioTestCase):
     """TestCase with additional assertions that are useful for testing Discord commands."""
 
-    @helpers.async_test
     async def assertHasPermissionsCheck(
         self,
         cmd: commands.Command,