From a4ea0e22f44683d7555c661d74fe16e87365400e Mon Sep 17 00:00:00 2001
From: Karolis Petrauskas <karolis.petrauskas@erisata.lt>
Date: Thu, 22 Aug 2024 10:29:09 +0300
Subject: [PATCH] Don't duplicate the metric options.

Signed-off-by: Karolis Petrauskas <karolis.petrauskas@erisata.lt>
---
 src/exometer_admin.erl  |  2 +-
 test/exometer_SUITE.erl | 13 +++++++++++--
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/exometer_admin.erl b/src/exometer_admin.erl
index f7dc089..cf80ee7 100644
--- a/src/exometer_admin.erl
+++ b/src/exometer_admin.erl
@@ -332,7 +332,7 @@ handle_call({ensure, Name, Type, Opts}, _From, S) ->
         [] ->
             #exometer_entry{options = OptsTemplate} = E0 =
                 lookup_definition(Name, Type, Opts),
-            E1 = process_opts(E0, OptsTemplate ++ Opts),
+            E1 = process_opts(E0, OptsTemplate),
             Res = exometer:create_entry(E1),
             report_new_entry(E1),
             {reply, Res, S}
diff --git a/test/exometer_SUITE.erl b/test/exometer_SUITE.erl
index cb5ba4a..2bdb54f 100644
--- a/test/exometer_SUITE.erl
+++ b/test/exometer_SUITE.erl
@@ -43,7 +43,8 @@
     test_app_predef/1,
     test_function_match/1,
     test_status/1,
-    test_slide_ignore_outdated/1
+    test_slide_ignore_outdated/1,
+    test_info_options/1
    ]).
 
 %% utility exports
@@ -113,7 +114,8 @@ groups() ->
       ]},
      {test_info, [shuffle],
       [
-       test_status
+       test_status,
+       test_info_options
       ]}
     ].
 
@@ -502,6 +504,13 @@ test_slide_ignore_outdated(_Config) ->
 
    ok.
 
+
+% Check if options are not duplicated.
+test_info_options(_Config) ->
+    ok = exometer:new([?FUNCTION_NAME], gauge, [{custom_opt, works}]),
+    [{custom_opt,works}] = exometer:info([?FUNCTION_NAME], options).
+
+
 %%%===================================================================
 %%% Internal functions
 %%%===================================================================