Improve test for slimming

Change-Id: If5cddb990e34bb09ec90cd14eed0c8dc05ad81f0
diff --git a/t/plugin/conllu2korapxml.t b/t/plugin/conllu2korapxml.t
index f217fb8..7e6b8f7 100644
--- a/t/plugin/conllu2korapxml.t
+++ b/t/plugin/conllu2korapxml.t
@@ -8,6 +8,13 @@
   exit;
 };
 
+use_ok('Log::Any::Adapter::Stderr');
+use_ok('Log::Any::Adapter::Stdout');
+use_ok('Log::Any::Adapter::Null');
+use_ok('Log::Any::Adapter::Multiplex');
+use_ok('Log::Any::Adapter::Syslog');
+use_ok('Log::Any::Adapter::Test');
+
 my $t = Test::Mojo->new(Kalamar => {
   Kalamar => {
     plugins => ['KorAPXML2CoNLLU']