[OE-core] run ptest for specific packages or layers

[Nathan Lynch]

On 01/30/2015 09:09 AM, Burton, Ross wrote:
> 
> On 30 January 2015 at 13:39, Markus Boos <Markus.Boos at kistler.com
> <mailto:Markus.Boos at kistler.com>> wrote:
> 
>     We faced the problem that our image (built with ptest feature)
>     doesn't fit into our flash [1].
>     I'd like to run the ptest on real hardware cause some packages need
>     the mounted FPGA functionality.
> 
> 
> Don't use ptest-pkgs to pull the tests into the image, but add the ones
> you want directly.  Such as:
> 
> CORE_IMAGE_EXTRA_INSTALL_append = " ptest-runner myapp-ptest"

Incidentally, I tried this for lttng-tools:

DISTRO_FEATURES_append = " ptest"
CORE_IMAGE_EXTRA_INSTALL_append = " ptest-runner lttng-tools-ptest"

lttng-tools' test script invokes the "prove" command, which does not get
installed:

root at qemuarm:/usr/lib/lttng-tools/ptest# ./run-ptest
[...]
./run.sh unit_tests
./run.sh: line 22: prove: command not found
Makefile:664: recipe for target 'installcheck-am' failed

The "prove" command appears to be provided by perl-misc, so I added that
and retried:

./run.sh unit_tests
Can't locate App/Prove.pm in @INC (you may need to install the
App::Prove module)

Adding perl-modules apparently pulled in the necessary module and got
the tests running.

lttng-tools_2.5.3.bb currently has:

RDEPENDS_${PN}-ptest += "make perl bash"

Should it specify perl-misc and perl-modules instead of just perl?