Assertions for #11743

(cherry picked from commit c361edd)

Author: michaelklishin

deps/rabbitmq_prometheus/src/collectors/prometheus_rabbitmq_core_metrics_collector.erl

@@ -57,7 +57,7 @@
 
 -define(METRICS_RAW, [
 
-%%% Those are global, i.e. they contain no reference to queue/vhost/channel
+    %% Global metrics, as in, they contain no references to queues, virtual hosts or channel
     {connection_churn_metrics, [
         {2, undefined, connections_opened_total, counter, "Total number of connections opened"},
         {3, undefined, connections_closed_total, counter, "Total number of connections closed or terminated"},

deps/rabbitmq_prometheus/test/rabbit_prometheus_http_SUITE.erl

@@ -381,6 +381,10 @@ aggregated_metrics_test(Config) ->
     ?assertEqual(match, re:run(Body, "^rabbitmq_queue_consumers ", [{capture, none}, multiline])),
     ?assertEqual(match, re:run(Body, "TYPE rabbitmq_auth_attempts_total", [{capture, none}, multiline])),
     ?assertEqual(nomatch, re:run(Body, "TYPE rabbitmq_auth_attempts_detailed_total", [{capture, none}, multiline])),
+    %% Memory breakdown
+    ?assertEqual(match, re:run(Body, "^rabbitmq_memory_quorum_queue_erlang_process_bytes ", [{capture, none}, multiline])),
+    ?assertEqual(match, re:run(Body, "^rabbitmq_memory_classic_queue_erlang_process_bytes ", [{capture, none}, multiline])),
+    ?assertEqual(match, re:run(Body, "^rabbitmq_memory_binary_heap_bytes ", [{capture, none}, multiline])),
     %% Check the first metric value in each ETS table that requires converting
     ?assertEqual(match, re:run(Body, "^rabbitmq_erlang_uptime_seconds ", [{capture, none}, multiline])),
     ?assertEqual(match, re:run(Body, "^rabbitmq_io_read_time_seconds_total ", [{capture, none}, multiline])),