diff --git a/test/test-sysusers/test-15.expected-group b/test/test-sysusers/test-15.expected-group
new file mode 100644
index 0000000000..1dbf9013ee
--- /dev/null
+++ b/test/test-sysusers/test-15.expected-group
@@ -0,0 +1 @@
+root:x:0:
diff --git a/test/test-sysusers/test-15.expected-passwd b/test/test-sysusers/test-15.expected-passwd
new file mode 100644
index 0000000000..a880bd497f
--- /dev/null
+++ b/test/test-sysusers/test-15.expected-passwd
@@ -0,0 +1 @@
+root::0:0::/root:/bin/sh
diff --git a/test/test-sysusers/test-15.initial-passwd b/test/test-sysusers/test-15.initial-passwd
new file mode 100644
index 0000000000..a880bd497f
--- /dev/null
+++ b/test/test-sysusers/test-15.initial-passwd
@@ -0,0 +1 @@
+root::0:0::/root:/bin/sh
diff --git a/test/test-sysusers/test-15.input b/test/test-sysusers/test-15.input
new file mode 100644
index 0000000000..cc46672e7f
--- /dev/null
+++ b/test/test-sysusers/test-15.input
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# Create proper group when matching user entry is in place.
+#
+#Type Name ID GECOS        HOMEDIR
+u     root 0  "Super User" /root