Re: [Qemu-devel] [PATCH v3 05/20] Acceptance tests: introduce arch parameter and attribute

[Cleber Rosa]

On Fri, Mar 01, 2019 at 11:27:10AM +0100, Cornelia Huck wrote:
> On Wed, 20 Feb 2019 19:57:38 -0500
> Cleber Rosa <address@hidden> wrote:
> 
> > It's useful to define the architecture that should be used in
> > situations such as:
> >  * the intended target of the QEMU binary to be used on tests
> >  * the architecture of code to be run within the QEMU binary, such
> >    as a kernel image or a full blown guest OS image
> > 
> > This commit introduces both a test parameter and a test instance
> > attribute, that will contain such a value.
> > 
> > Now, when the "arch" test parameter is given, it will influence the
> > selection of the default QEMU binary, if one is not given explicitly
> > by means of the "qemu_img" parameter.
> > 
> > Signed-off-by: Cleber Rosa <address@hidden>
> > Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
> > ---
> >  docs/devel/testing.rst                    | 28 +++++++++++++++++++++++
> >  tests/acceptance/avocado_qemu/__init__.py | 14 +++++++++---
> >  2 files changed, 39 insertions(+), 3 deletions(-)
> > 
> > diff --git a/docs/devel/testing.rst b/docs/devel/testing.rst
> > index ceaaafc69f..6035db1b44 100644
> > --- a/docs/devel/testing.rst
> > +++ b/docs/devel/testing.rst
> > @@ -689,6 +689,21 @@ vm
> >  A QEMUMachine instance, initially configured according to the given
> >  ``qemu_bin`` parameter.
> >  
> > +arch
> > +~~~~
> > +
> > +The architecture can be used on different levels of the stack, e.g. by
> > +the framework or by the test itself.  At the framework level, it will
> > +will currently influence the selection of a QEMU binary (when one is
> 
> s/will will/will/

Thanks for spotting this!

> 
> > +not explicitly given).
> > +
> > +Tests are also free to use this attribute value, for their own needs.
> > +A test may, for instance, use the same value when selecting the
> > +architecture of a kernel or disk image to boot a VM with.
> > +
> > +The ``arch`` attribute will be set to the test parameter of the same
> > +name, and if one is not given explicitly, it will be set to ``None``.
> > +
> >  qemu_bin
> >  ~~~~~~~~
> >  
> > @@ -711,6 +726,19 @@ like the following:
> >  
> >    PARAMS (key=qemu_bin, path=*, default=x86_64-softmmu/qemu-system-x86_64) 
> > => 'x86_64-softmmu/qemu-system-x86_64
> >  
> > +arch
> > +~~~~
> > +
> > +The architecture that will influence the selection of a QEMU binary
> > +(when one is not explicitly given).
> > +
> > +Tests are also free to use this parameter value, for their own needs.
> > +A test may, for instance, use the same value when selecting the
> > +architecture of a kernel or disk image to boot a VM with.
> > +
> > +This parameter has a direct relation with the ``arch`` attribute.  If
> > +not given, it will default to None.
> > +
> >  qemu_bin
> >  ~~~~~~~~
> >  
> > diff --git a/tests/acceptance/avocado_qemu/__init__.py 
> > b/tests/acceptance/avocado_qemu/__init__.py
> > index d8d5b48dac..f580582602 100644
> > --- a/tests/acceptance/avocado_qemu/__init__.py
> > +++ b/tests/acceptance/avocado_qemu/__init__.py
> > @@ -23,16 +23,22 @@ def is_readable_executable_file(path):
> >      return os.path.isfile(path) and os.access(path, os.R_OK | os.X_OK)
> >  
> >  
> > -def pick_default_qemu_bin():
> > +def pick_default_qemu_bin(arch=None):
> >      """
> >      Picks the path of a QEMU binary, starting either in the current working
> >      directory or in the source tree root directory.
> >  
> > +    :param arch: the arch to use when looking for a QEMU binary (the target
> > +                 will match the arch given).  If None (the default) arch
> 
> s/None (the default)/None (the default),/ makes that sentence less
> confusing :)
> 

Good point, thanks!

- Cleber.