Re: [PATCH v4 5/6] iotests: Skip Python-based tests if QEMU does not support virtio-blk

[Thomas Huth <thuth@redhat.com>]

On 20/01/2020 15.50, Max Reitz wrote:
> On 02.12.19 11:10, Thomas Huth wrote:
>> We are going to enable some of the python-based tests in the "auto" group,
>> and these tests require virtio-blk to work properly. Running iotests
>> without virtio-blk likely does not make too much sense anyway, so instead
>> of adding a check for the availability of virtio-blk to each and every
>> test (which does not sound very appealing), let's rather add a check for
>> this a central spot in the "check" script instead (so that it is still
>> possible to run "make check" for qemu-system-tricore for example).
>>
>> Signed-off-by: Thomas Huth <thuth@redhat.com>
>> ---
>>  tests/qemu-iotests/check | 8 ++++++--
>>  1 file changed, 6 insertions(+), 2 deletions(-)
>>
>> diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check
>> index 90970b0549..bce3035d5a 100755
>> --- a/tests/qemu-iotests/check
>> +++ b/tests/qemu-iotests/check
>> @@ -642,7 +642,11 @@ fi
>>  python_usable=false
>>  if $PYTHON -c 'import sys; sys.exit(0 if sys.version_info >= (3,6) else 1)'
>>  then
>> -    python_usable=true
>> +    # Our python framework also requires virtio-blk
>> +    if "$QEMU_PROG" -M none -device help | grep -q virtio-blk >/dev/null 2>&1
>> +    then
>> +        python_usable=true
>> +    fi
>>  fi
>>  
>>  default_machine=$($QEMU_PROG -machine help | sed -n '/(default)/ s/ .*//p')
>> @@ -830,7 +834,7 @@ do
>>                  run_command="$PYTHON $seq"
>>              else
>>                  run_command="false"
>> -                echo "Unsupported Python version" > $seq.notrun
>> +                echo "Unsupported Python version or missing virtio-blk" > $seq.notrun
> 
> A $python_unusable_because might be helpful (set in to-be-added else
> branches for the ifs that set python_usable to true), but either way:

Sounds like a good idea, I'll give it a try and send a v5.

 Thanks,
  Thomas