Re: [PATCH] tests/acceptance: bound the size of readline in s390_ccw_virtio

[Thomas Huth <thuth@redhat.com>]

On 05/01/2021 13.44, Alex Bennée wrote:
> The read binary data as text via a PPM export of the frame buffer
> seems a bit sketchy and it did blow up in the real world when the
> assertion failed:
> 
>    https://gitlab.com/qemu-project/qemu/-/jobs/943183183
> 
> However short of cleaning up the test to be more binary focused at
> least limit the attempt to dump the whole file as hexified zeros in
> the logs.
> 
> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
> ---
>   tests/acceptance/machine_s390_ccw_virtio.py | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tests/acceptance/machine_s390_ccw_virtio.py b/tests/acceptance/machine_s390_ccw_virtio.py
> index 0f81af9950..5141d6abb2 100644
> --- a/tests/acceptance/machine_s390_ccw_virtio.py
> +++ b/tests/acceptance/machine_s390_ccw_virtio.py
> @@ -241,7 +241,7 @@ class S390CCWVirtioMachine(Test):
>               self.assertEqual(line, b"1024 768\n")
>               line = ppmfile.readline()
>               self.assertEqual(line, b"255\n")
> -            line = ppmfile.readline()
> +            line = ppmfile.readline(size=256)
>               self.assertEqual(line, b"The quick fox jumps over a lazy dog\n")
>   
>           # Hot-plug a virtio-crypto device and see whether it gets accepted
> 

Acked-by: Thomas Huth <thuth@redhat.com>