Re: [PATCH v3] tests/acceptance: Add a test with the Fedora 31 kernel and initrd

[Cornelia Huck <cohuck@redhat.com>]

On Mon, 21 Dec 2020 14:32:54 +0100
Thomas Huth <thuth@redhat.com> wrote:

> This initrd contains a virtio-net and a virtio-gpu kernel module,
> so we can check that we can set a MAC address for the network device
> and whether we can hot-plug and -unplug a virtio-crypto device.
> But the most interesting part is maybe that we can also successfully
> write some stuff into the emulated framebuffer of the virtio-gpu
> device and make sure that we can read back that data from a screenshot.
> 
> Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com> 
> Signed-off-by: Thomas Huth <thuth@redhat.com>
> ---
>  v3:
>  - Remove unused "import re"
>  - Use lscss to test for devnos
>  - Improve tmpfile handling (thanks Wainer!)
> 
>  tests/acceptance/machine_s390_ccw_virtio.py | 110 ++++++++++++++++++++
>  1 file changed, 110 insertions(+)

(...)

> +        # Some tests to see whether the CLI options have been considered:
> +        self.log.info("Test whether QEMU CLI options have been considered")
> +        exec_command_and_wait_for_pattern(self, 'lspci',
> +                             '0007:00:00.0 Class 0200: Device 1af4:1000')
> +        exec_command_and_wait_for_pattern(self,
> +                             'cat /sys/class/net/enP7p0s0/address',
> +                             '02:ca:fe:fa:ce:12')
> +        exec_command_and_wait_for_pattern(self, 'lscss', '0.1.9876')
> +        self.wait_for_console_pattern('0.2.5432')

This looks a bit odd... maybe do 'lscss -d 0.1.9876' and 'lscss -d
0.2.5432' and wait for the respective devnos to be printed?

(I'm not entirely sure about the wait_for_console_pattern semantics
here... can the 0.2.5432 line have been printed already before we start
waiting, and would that be a problem? Might be better to play it safe.)

(...)