diff --git a/testscript/testdata/script/set-username.txtar b/testscript/testdata/script/set-username.txtar
new file mode 100644
index 0000000000000000000000000000000000000000..4f983a8e508b6a471dc83b945822fed6d58be71a
--- /dev/null
+++ b/testscript/testdata/script/set-username.txtar
@@ -0,0 +1,19 @@
+# vi: set ft=conf
+# set-username
+soft info
+cmp stdout info1.txt
+
+soft set-username test
+soft info
+cmp stdout info2.txt
+
+-- info1.txt --
+Username: admin
+Admin: true
+Public keys:
+  ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJI/1tawpdPmzuJcTGTJ+QReqB6cRUdKj4iQIdJUFdrl
+-- info2.txt --
+Username: test
+Admin: true
+Public keys:
+  ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJI/1tawpdPmzuJcTGTJ+QReqB6cRUdKj4iQIdJUFdrl