Added a test to check if a custom subscriber was created correctly.

Author: bks-ol

rclcpp/test/rclcpp/test_create_custom_subscription.cpp

@@ -58,10 +58,9 @@ TEST_F(TestCreateSubscription, create) {
   using AllocatorT = std::allocator<void>;
   using SubscriptionT = CustomSubscription<MessageT, AllocatorT>;
   using CallbackMessageT =
-      typename rclcpp::subscription_traits::has_message_type<CallbackT>::type;
+    typename rclcpp::subscription_traits::has_message_type<CallbackT>::type;
   using MessageMemoryStrategyT =
-      rclcpp::message_memory_strategy::MessageMemoryStrategy<CallbackMessageT,
-                                                             AllocatorT>;
+    rclcpp::message_memory_strategy::MessageMemoryStrategy<CallbackMessageT, AllocatorT>;
 
   auto subscription = rclcpp::create_subscription<
     MessageT, CallbackT, AllocatorT, SubscriptionT, MessageMemoryStrategyT>(