test: improve coverage

Signed-off-by: Shingo OKAWA <shingo.okawa.g.h.c@gmail.com>

Author: ognis1205

tests/client/test_grpc_client.py

@@ -39,7 +39,7 @@ def mock_grpc_stub() -> AsyncMock:
     stub.SendStreamingMessage = AsyncMock()
     stub.GetTask = AsyncMock()
     stub.CancelTask = AsyncMock()
-    stub.CreateTaskPushNotification = AsyncMock()
+    stub.CreateTaskPushNotificationConfig = AsyncMock()
     stub.GetTaskPushNotification = AsyncMock()
     return stub
 
@@ -166,8 +166,8 @@ def sample_task_push_notification_config(
 ) -> TaskPushNotificationConfig:
     """Provides a sample TaskPushNotificationConfig object."""
     return TaskPushNotificationConfig(
-        name='task-push-notification-config-name-1',
-        push_notification_config=sample_push_notification_config,
+        taskId='task-1',
+        pushNotificationConfig=sample_push_notification_config,
     )