diff --git a/examples/sys/basic/test.sh b/examples/sys/basic/test.sh
new file mode 100755
index 0000000..b2aa8e0
--- /dev/null
+++ b/examples/sys/basic/test.sh
@@ -0,0 +1,5 @@
+#!/bin/bash -eu
+
+out="$(echo -n "Hello world" | "$1")"
+
+[[ "${out}" == "Compressed 11 to 50 bytes" ]] || (echo "Got ${out}" && exit 1)