refactor

server/handler/handler_admin_utils_test.go

@@ -22,7 +22,9 @@ func TestFirstExisting(t *testing.T) {
 			"default"},
 	}
 	for _, tc := range cases {
+		tc := tc // pin
 		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
 			actu := firstExisting(tc.or, tc.values...)
 			if actu != tc.exp {
 				t.Errorf("expected %q, got %q", tc.exp, actu)