Colin Walters d4c19f7d31 tests: Add a suite which runs tests under systemd ...

And add a single test which verifies that our internal `reboot`
code actually does what it should (via systemd-run etc.)

This took me way, way too long to do...there were so many missteps
and confusion. First of all, I kept trying to use `systemd.extra-unit`
from https://www.freedesktop.org/software/systemd/man/latest/systemd-debug-generator.html#
but that doesn't exist in stream9.

I spent way too long trying to debug the fact that switching from
`podman run <image> /sbin/init` to `podman run <image> /bin/sh -c '<stuff> && exec /sbin/init`
fails because in the latter case podman's auto-detection fails and
we need to explicitly say `--systemd=always`. In retrospect obvious...but oh well.

On the positive side, I think with some cleanup we could extend this model
and generalize it for "test running in a container with systemd" (with
a lot of cleanup really)

Signed-off-by: Colin Walters <walters@verbum.org>

2025-07-18 07:42:05 -04:00

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