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libqtest: Ignore QMP events when parsing the response for HMP commands

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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. Fix this by ignoring such QMP events while looking for the
real return value from QMP.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1490860207-8302-2-git-send-email-thuth@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  Added note to qtest_hmp/qtest_hmpv's header description to say
  it discards events
This commit is contained in:
Thomas Huth 2017-03-30 09:50:05 +02:00 • committed by Dr. David Alan Gilbert
parent b7da97eef7
commit 6bb87be893
2 changed files with 9 additions and 1 deletions
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6
tests/libqtest.c
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@ -588,6 +588,12 @@ char *qtest_hmpv(QTestState *s, const char *fmt, va_list ap)
" 'arguments': {'command-line': %s}}",
cmd);
ret = g_strdup(qdict_get_try_str(resp, "return"));
while (ret == NULL && qdict_get_try_str(resp, "event")) {
/* Ignore asynchronous QMP events */
QDECREF(resp);
resp = qtest_qmp_receive(s);
ret = g_strdup(qdict_get_try_str(resp, "return"));
}
g_assert(ret);
QDECREF(resp);
g_free(cmd);