test: add test for new XDG_STATE_HOME handling

diff --git a/test/units/testsuite-23.statedir.sh b/test/units/testsuite-23.statedir.sh
new file mode 100755 (executable)
index 0000000..b592314
--- /dev/null
+++ b/test/units/testsuite-23.statedir.sh
@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# shellcheck disable=SC2235
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+set -eux
+set -o pipefail
+
+# Test unit configuration/state/cache/log/runtime data cleanup
+
+export HOME=/root
+export XDG_RUNTIME_DIR=/run/user/0
+
+systemctl start user@0.service
+
+( ! test -d "$HOME"/.local/state/foo)
+( ! test -d "$HOME"/.config/foo)
+
+systemd-run --user -p StateDirectory=foo --wait /bin/true
+
+test -d "$HOME"/.local/state/foo
+( ! test -L "$HOME"/.local/state/foo)
+( ! test -d "$HOME"/.config/foo)
+
+systemd-run --user -p StateDirectory=foo -p ConfigurationDirectory=foo --wait /bin/true
+
+test -d "$HOME"/.local/state/foo
+( ! test -L "$HOME"/.local/state/foo)
+test -d "$HOME"/.config/foo
+
+rmdir "$HOME"/.local/state/foo "$HOME"/.config/foo
+
+systemd-run --user -p StateDirectory=foo -p ConfigurationDirectory=foo --wait /bin/true
+
+test -d "$HOME"/.local/state/foo
+( ! test -L "$HOME"/.local/state/foo)
+test -d "$HOME"/.config/foo
+
+rmdir "$HOME"/.local/state/foo "$HOME"/.config/foo
+
+# Now trigger an update scenario by creating a config dir first
+systemd-run --user -p ConfigurationDirectory=foo --wait /bin/true
+
+( ! test -d "$HOME"/.local/state/foo)
+test -d "$HOME"/.config/foo
+
+# This will look like an update and result in a symlink
+systemd-run --user -p StateDirectory=foo -p ConfigurationDirectory=foo --wait /bin/true
+
+test -d "$HOME"/.local/state/foo
+test -L "$HOME"/.local/state/foo
+test -d "$HOME"/.config/foo
+
+test "$(readlink "$HOME"/.local/state/foo)" = ../../.config/foo
+
+# Check that this will work safely a second time
+systemd-run --user -p StateDirectory=foo -p ConfigurationDirectory=foo --wait /bin/true
+
+rm "$HOME"/.local/state/foo
+rmdir "$HOME"/.config/foo