diff --git a/tests/environments/fancythm/test.tex b/tests/environments/fancythm/test.tex
index df202b2..5ebf4f0 100644
--- a/tests/environments/fancythm/test.tex
+++ b/tests/environments/fancythm/test.tex
@@ -1,7 +1,9 @@
 \documentclass[12pt]{article}
 
 
-\usepackage[default styles]{thmstyle}
+\usepackage{l3benchmark}
+
+\PassOptionsToPackage{cache}{groupthm}
 
 \usepackage[number in = section]{fancythm}
 
@@ -9,12 +11,33 @@
 %\@counteralias{insection}{indocument}
 \makeatother
 
-\ExplSyntaxOff
 
 \AddProvidedFancyTheoremToGroup{lemma}{small}
 
+\NewTheoremGroup[suffix = $\frac{3}{4}$]{gag}
+
+\NewGroupedTheoremFamily[group = {dagger, star, gag}]{definition}
+
+\NewGroupedTheoremFamilyOptions{definition}{!s !t+ !tg }
+{
+  \IfBooleanT{#3} { \AddTheoremToGroup{gag}}
+}
+
+
+\ExplSyntaxOn
+\benchmark_once:n
+  {
+%      \__groupthm_thmtools_declare_theorem:nn{name=Definition}{__definition__groups_}
+  }
+\ExplSyntaxOff
+
+
 \begin{document}
 
+\begin{definition}g
+  bla
+\end{definition}
+
 \section{test}
 
 \stepcounter{toplevel}