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Re: [Qemu-devel] [PATCH 1/3] libqtest: Ignore QMP events when parsing th

From: Thomas Huth
Subject: Re: [Qemu-devel] [PATCH 1/3] libqtest: Ignore QMP events when parsing the response for HMP commands
Date: Thu, 23 Mar 2017 09:59:18 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0

On 23.03.2017 09:52, Stefan Hajnoczi wrote:
> On Tue, Mar 21, 2017 at 11:39:50AM +0100, Thomas Huth wrote:
>> When running certain HMP commands (like "device_del") via QMP, we
>> can sometimes get a QMP event in the response first, so that the
>> "g_assert(ret)" statement in qtest_hmp() triggers and the test
>> fails. So ignore such QMP events when looking for the real
>> return value from QMP.
>> Signed-off-by: Thomas Huth <address@hidden>
>> ---
>>  tests/libqtest.c | 6 ++++++
>>  1 file changed, 6 insertions(+)
> qmp.py keeps a queue of events so they can be processed later.  I guess
> an event queue will be needed eventually because discarding events makes
> it hard to write reliable test cases that check for events.

Yes, but in that case the test likely should not use the hmp() functions
at all and use qmp directly.

> But as long as current qtests work correctly:
> Reviewed-by: Stefan Hajnoczi <address@hidden>



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