retained test

test/emqttd_retained_tests.erl

@@ -0,0 +1,14 @@
+-module(emqttd_retained_tests).
+
+-include("emqttd.hrl").
+
+-ifdef(TEST).
+
+-include_lib("eunit/include/eunit.hrl").
+
+retain_test() ->
+    mnesia:start(),
+    emqttd_retained:mnesia(boot),
+    mnesia:stop().
+
+-endif.