diff --git a/tests/math/categories/test.tex b/tests/math/categories/test.tex
new file mode 100644
index 0000000..caf18b8
--- /dev/null
+++ b/tests/math/categories/test.tex
@@ -0,0 +1,27 @@
+\documentclass{article}
+
+\usepackage{mkessler-hypersetup}
+\usepackage{mkessler-categories}
+\usepackage{mkessler-math}
+
+\makeindex[name = categories]
+
+\begin{document}
+  \DeclareSimpleCategory[description = Vector spaces and linear maps]{mVect}
+  \DeclareSimpleCategory[description = Rings and homomorphisms]{mRing}
+
+  \DeclareCategory[
+    formula = \Delta,
+    ordered = Delta,
+    description = simplicial sets
+    ]{Simplicial}
+
+  \DeclareSimpleCategory[description = monoide]{Mon}
+
+  $\Ring\Ring\Mon\Simplicial$
+  \newpage
+  $\Ring\Vect$
+
+
+  \MakeCategoryIndex
+\end{document}