Some `composer-cli` commands operate on the current directory, for
example saving blueprints or images. Add the `TemporaryWorkDir` type,
which helps changing to a temporary working directory and cleaning
everything up after.
The alternative would have been to pass a working directory to all calls
of `runComposerCLI`, but that seemed like it would require a lot of
change, which I didn't deem worth for testing code.
comparing to lorax-composer test suite only ext4-filesystem and
partitioned-disk are built without asserting anything other than
the build succeeds. For the rest of the images we usually try to
boot them and verify the resulting VM works somehow.
Introduce a new osbuild-tests command and ship it in the -tests
sub-package.
The intended usecase is to install the -tests subpackage into an
otherwise pristine VM, and call the osbuild-tests binary over ssh
from the outside of the booted VM. If the binary exits with a return
code of 0, the tests passed, otherwise they failed. The VM should
not be reused after running the tests.
Signed-off-by: Tom Gundersen <teg@jklm.no>
