/usr/lib/systemd/tests/testdata/b.service is in systemd-tests 237-3ubuntu10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | [Unit]
Description=B
Wants=f.service
[Service]
ExecStart=/bin/true
|