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Re: [libvirt] [PATCH 0/3] libxl: Add a test suite for libxl_domain_config generator

On Sun, Feb 26, 2017 at 07:02:24PM -0700, Jim Fehlig wrote:
> Long ago danpb posted some patches to test libvirt domXML to
> libxl_domain_config conversion
> https://www.redhat.com/archives/libvir-list/2014-May/msg01102.html
> Some of the prerequisite patches were pushed, but we've never managed
> to push patches actually providing the conversion tests. I sent several
> follow-ups to Dan's work but never converged on a satisfactory solution
> for all the Xen versions supported by libvirt. The last attempt was in
> Sept 2014
> https://www.redhat.com/archives/libvir-list/2014-September/msg00698.html
> I tried to revive the work in Jan 2015, but that also stalled
> https://www.redhat.com/archives/libvir-list/2015-January/msg00924.html
> Fast-forward over 2.5 years from the first attempt and libvirt no longer
> supports older Xen versions 4.2 and 4.3 that were proving to be problematic.
> Starting with Xen 4.5 libxl added support for libxl_domain_config_from_json,
> which provides a way to implement the conversion tests that work with all
> Xen versions >= 4.5 (including latest xen.git master).

Few more months have passed...

FWIW, I've tested it with Xen 4.6. The patch needs very minor update:
 - add xencaps argument to libxlBuildDomainConfig call

After that, it works! When I made some test to fail, reported error is
not so helpful ("libvirt: Xen Light Driver error : internal error:
Expected and actual libxl_domain_config objects do not compare"), but it
do catch failures.
Then, if I change strcmp to virTestCompareToString, the output is much
more helpful.

I'd really love to have it merged, mostly because I want to add more tests
using this framework (see "Add setting CPU features (CPUID) with
libxenlight driver" thread).
Is there anything I can do to make it happen?

Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?

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