1 files changed, 39 insertions, 0 deletions
diff --git a/test/units/testsuite-14.sh b/test/units/testsuite-14.sh
new file mode 100755
index 0000000..5427591
--- /dev/null
+++ b/test/units/testsuite-14.sh
@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+set -eux
+set -o pipefail
+
+function setup_root {
+    local _root="$1"
+    mkdir -p "$_root"
+    mount -t tmpfs tmpfs "$_root"
+    mkdir -p "$_root/etc" "$_root/run"
+}
+
+function check {
+    printf "Expected\n"
+    cat "$1"
+    printf "\nGot\n"
+    cat "$2"
+    cmp "$1" "$2"
+}
+
+r="$(pwd)/overwrite-broken-machine-id"
+setup_root "$r"
+systemd-machine-id-setup --print --root "$r"
+echo abc >>"$r/etc/machine-id"
+id="$(systemd-machine-id-setup --print --root "$r")"
+echo "$id" >expected
+check expected "$r/etc/machine-id"
+
+r="$PWD/transient-machine-id"
+setup_root "$r"
+systemd-machine-id-setup --print --root "$r"
+echo abc >>"$r/etc/machine-id"
+mount -o remount,ro "$r"
+mount -t tmpfs tmpfs "$r/run"
+transient_id="$(systemd-machine-id-setup --print --root "$r")"
+mount -o remount,rw "$r"
+commited_id="$(systemd-machine-id-setup --print --commit --root "$r")"
+[[ "$transient_id" = "$commited_id" ]]
+check "$r/etc/machine-id" "$r/run/machine-id"