systemd/test/test-execute/exec-dynamicuser-runtimedirectory1.service

[Unit]
Description=Test for RuntimeDirectory with RuntimeDirectoryPreserve=yes and DynamicUser=yes

[Service]
ExecStart=/bin/sh -x -c 'test -d %t/test-exec_runtimedirectorypreserve'
ExecStart=/bin/sh -x -c 'test "$$RUNTIME_DIRECTORY" = "%t/test-exec_runtimedirectorypreserve"'
ExecStart=/bin/sh -x -c 'touch $$RUNTIME_DIRECTORY/test'
Type=oneshot
RuntimeDirectory=test-exec_runtimedirectorypreserve
RuntimeDirectoryPreserve=yes
DynamicUser=yes