Run cluster test only if FF is enabled

Author: acogoluegnes

deps/rabbit/test/amqp_connection_uniqueness_SUITE.erl

@@ -21,7 +21,9 @@
 -import(rabbit_amqp_util,
         [has_capability/2]).
 
--import(rabbit_ct_broker_helpers, [rpc/5]).
+-import(rabbit_ct_broker_helpers,
+        [rpc/5,
+         rpc_all/4]).
 
 all() ->
     [
@@ -48,20 +50,9 @@ all_tests() ->
      close_existing_conflict_different_user_should_be_refused
     ].
 
-init_per_suite(Config) ->
-    case rabbit_ct_helpers:is_mixed_versions() of
-        true ->
-            {skip, "mixed version clusters are not supported"};
-        _ ->
-            {ok, _} = application:ensure_all_started(amqp10_client),
-            rabbit_ct_helpers:log_environment(),
-            Config
-    end.
-
-end_per_suite(Config) ->
-    Config.
-
 init_per_group(Group, Config) ->
+    {ok, _} = application:ensure_all_started(amqp10_client),
+    rabbit_ct_helpers:log_environment(),
     Nodes = case Group of
                 cluster_size_3 -> 3;
                 _ -> 1
@@ -74,9 +65,24 @@ init_per_group(Group, Config) ->
                 Config1,
                 rabbit_ct_broker_helpers:setup_steps() ++
                 rabbit_ct_client_helpers:setup_steps()),
-    Config2.
+    case Nodes > 1 of
+        true ->
+            case rpc(Config2, 0, rabbit_feature_flags,
+                     enable, ['rabbitmq_4.4.0']) of
+                ok ->
+                    Config2;
+                _ ->
+                    tear_down_cluster(Config2),
+                    {skip, "sole conn feature not available cluster-wide"}
+            end;
+        _ ->
+            Config2
+    end.
 
 end_per_group(_, Config) ->
+    tear_down_cluster(Config).
+
+tear_down_cluster(Config) ->
     rabbit_ct_helpers:run_teardown_steps(
       Config,
       rabbit_ct_client_helpers:teardown_steps() ++