diff --git a/test/units/testsuite-50.sh b/test/units/testsuite-50.sh
index 546a915a2e..3af90a69c6 100755
--- a/test/units/testsuite-50.sh
+++ b/test/units/testsuite-50.sh
@@ -483,6 +483,17 @@ test ! -e "/dev/loop/by-ref/$name"
 systemd-dissect --detach "${image}.raw"
 (! systemd-dissect --detach "${image}.raw")
 
+# check for confext functionality
+mkdir -p /run/confexts/test/etc/extension-release.d
+echo "ID=_any" >/run/confexts/test/etc/extension-release.d/extension-release.test
+echo "ARCHITECTURE=_any" >>/run/confexts/test/etc/extension-release.d/extension-release.test
+echo "MARKER_CONFEXT_123" >/run/confexts/test/etc/testfile
+systemd-confext merge
+grep -q -F "MARKER_CONFEXT_123" /etc/testfile
+systemd-confext status
+systemd-confext unmerge
+rm -rf /run/confexts/
+
 echo OK >/testok
 
 exit 0