Re: [PATCH v3 3/9] tests/qtest: get rid of 'qmp_command' helper in migration test

["Daniel P. Berrangé" <berrange@redhat.com>]

On Thu, Jun 01, 2023 at 11:26:46AM +0200, Thomas Huth wrote:
> On 31/05/2023 15.23, Daniel P. Berrangé wrote:
> > This function duplicates logic of qtest_qmp_assert_success_ref
> > 
> > Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
> > ---
> >   tests/qtest/migration-helpers.c | 22 ----------------------
> >   tests/qtest/migration-helpers.h |  3 ---
> >   tests/qtest/migration-test.c    | 29 +++++++++++++++--------------
> >   3 files changed, 15 insertions(+), 39 deletions(-)
> > 
> > diff --git a/tests/qtest/migration-helpers.c b/tests/qtest/migration-helpers.c
> > index f6f3c6680f..bddf3f8d4d 100644
> > --- a/tests/qtest/migration-helpers.c
> > +++ b/tests/qtest/migration-helpers.c
> > @@ -85,28 +85,6 @@ QDict *wait_command(QTestState *who, const char *command, ...)
> >       return ret;
> >   }
> > -/*
> > - * Execute the qmp command only
> > - */
> > -QDict *qmp_command(QTestState *who, const char *command, ...)
> > -{
> > -    va_list ap;
> > -    QDict *resp, *ret;
> > -
> > -    va_start(ap, command);
> > -    resp = qtest_vqmp(who, command, ap);
> > -    va_end(ap);
> > -
> > -    g_assert(!qdict_haskey(resp, "error"));
> 
> What about this g_assert(!qdict_haskey(resp, "error")) ?
> qtest_qmp_assert_success_ref() does not have this assert... do we still need
> it somewhere? If not, please add a comment to the patch description why it
> can be ignored now.

The caller just wants the 'return' field data. If that is missing,
qtest_qmp_assert_success_ref() will issue the diagnostic message
printing the entire QMP resposne, which is way more debuggable
than just asserting on 'error' without printing the error contents

With regards,
Daniel
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