Fix problem with comments getting lost when running parallel test cases

OTP-11898

3 files changed, 37 insertions, 5 deletions

diff --git a/lib/common_test/src/ct.erl b/lib/common_test/src/ct.erl
index 241cd928b7..85afdc7834 100644
--- a/lib/common_test/src/ct.erl
+++ b/lib/common_test/src/ct.erl
@@ -773,7 +773,7 @@ comment(Format, Args) when is_list(Format), is_list(Args) ->
 
 send_html_comment(Comment) ->
     Html = "<font color=\"green\">" ++ Comment ++ "</font>",
-    ct_util:set_testdata({comment,Html}),
+    ct_util:set_testdata({{comment,group_leader()},Html}),
     test_server:comment(Html).
 
 %%%-----------------------------------------------------------------
diff --git a/lib/common_test/src/ct_framework.erl b/lib/common_test/src/ct_framework.erl
index 9ef917a507..20903607dc 100644
--- a/lib/common_test/src/ct_framework.erl
+++ b/lib/common_test/src/ct_framework.erl
@@ -657,7 +657,18 @@ end_tc(Mod,Func,TCPid,Result,Args,Return) ->
 	_ ->
 	    ok
     end,
-    ct_util:delete_testdata(comment),
+    if Func == end_per_group; Func == end_per_suite ->
+	    %% clean up any saved comments
+	    ct_util:match_delete_testdata({comment,'_'});
+       true ->
+	    %% attemp to delete any saved comment for this TC
+	    case process_info(TCPid, group_leader) of
+		{group_leader,TCGL} ->
+		    ct_util:delete_testdata({comment,TCGL});
+		_ ->
+		    ok
+	    end
+    end,
     ct_util:delete_suite_data(last_saved_config),
 
     FuncSpec = group_or_func(Func,Args),
@@ -850,7 +861,7 @@ error_notification(Mod,Func,_Args,{Error,Loc}) ->
 	_ ->			     
 	    %% this notification comes from the test case process, so
 	    %% we can add error info to comment with test_server:comment/1
-	    case ct_util:get_testdata(comment) of
+	    case ct_util:get_testdata({comment,group_leader()}) of
 		undefined ->
 		    test_server:comment(ErrorHtml);
 		Comment ->
diff --git a/lib/common_test/src/ct_util.erl b/lib/common_test/src/ct_util.erl
index f5eb3a72f0..56027586d1 100644
--- a/lib/common_test/src/ct_util.erl
+++ b/lib/common_test/src/ct_util.erl
@@ -37,7 +37,7 @@
 	 save_suite_data_async/3, save_suite_data_async/2,
 	 read_suite_data/1, 
 	 delete_suite_data/0, delete_suite_data/1, match_delete_suite_data/1,
-	 delete_testdata/0, delete_testdata/1,
+	 delete_testdata/0, delete_testdata/1, match_delete_testdata/1,
 	 set_testdata/1, get_testdata/1, get_testdata/2,
 	 set_testdata_async/1, update_testdata/2, update_testdata/3,
 	 set_verbosity/1, get_verbosity/1]).
@@ -270,6 +270,9 @@ delete_testdata() ->
 delete_testdata(Key) ->
     call({delete_testdata, Key}).
 
+match_delete_testdata(KeyPat) ->
+    call({match_delete_testdata, KeyPat}).
+
 update_testdata(Key, Fun) ->
     update_testdata(Key, Fun, []).
 
@@ -361,7 +364,25 @@ loop(Mode,TestData,StartDir) ->
 	{{delete_testdata,Key},From} ->
 	    TestData1 = lists:keydelete(Key,1,TestData),
 	    return(From,ok),
-	    loop(From,TestData1,StartDir);	
+	    loop(From,TestData1,StartDir);
+	{{match_delete_testdata,{Key1,Key2}},From} ->
+	    %% handles keys with 2 elements
+	    TestData1 =
+		lists:filter(fun({Key,_}) when not is_tuple(Key) ->
+				     true;
+				({Key,_}) when tuple_size(Key) =/= 2 ->
+				     true;
+				({{_,KeyB},_}) when Key1 == '_' ->
+				     KeyB =/= Key2; 
+				({{KeyA,_},_}) when Key2 == '_' ->
+				     KeyA =/= Key1; 
+				(_) when Key1 == '_' ; Key2 == '_' ->
+				     false;
+				(_) ->
+				     true
+			     end, TestData),
+	    return(From,ok),
+	    loop(From,TestData1,StartDir);
 	{{set_testdata,New = {Key,_Val}},From} ->
 	    TestData1 = lists:keydelete(Key,1,TestData),
 	    return(From,ok),