Add missing type hints in tests (#14879)

* FIx-up type hints in tests.logging.
* Add missing type hints to test_transactions.

1 files changed, 4 insertions, 2 deletions

diff --git a/tests/logging/__init__.py b/tests/logging/__init__.py
index 1acf5666a8..1c5de95a80 100644
--- a/tests/logging/__init__.py
+++ b/tests/logging/__init__.py
@@ -13,9 +13,11 @@
 # limitations under the License.
 import logging
 
+from tests.unittest import TestCase
 
-class LoggerCleanupMixin:
-    def get_logger(self, handler):
+
+class LoggerCleanupMixin(TestCase):
+    def get_logger(self, handler: logging.Handler) -> logging.Logger:
         """
         Attach a handler to a logger and add clean-ups to remove revert this.
         """