qemu: monitor: Add possibility to reset command sequence in tests

qemucapabilitiestest for simplicity uses one test monitor object for
simulating work of two separate inquiries of the qemu process. To allow
better testing in the future it will be required to reset the counter
so that it accurately simulates how qemu would behave.

This patch adds a private monitor API which allows to reset the counter
which will be usable only in tests.
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

src/qemu/qemu_monitor.c

@@ -48,6 +48,9 @@
 # include "libvirt_qemu_probes.h"
 #endif
 
+#define __QEMU_MONITOR_PRIV_H_ALLOW__
+#include "qemu_monitor_priv.h"
+
 #define VIR_FROM_THIS VIR_FROM_QEMU
 
 VIR_LOG_INIT("qemu.qemu_monitor");
@@ -1046,6 +1049,14 @@ qemuMonitorNextCommandID(qemuMonitorPtr mon)
 }
 
 
+/* for use only in the test suite */
+void
+qemuMonitorResetCommandID(qemuMonitorPtr mon)
+{
+    mon->nextSerial = 0;
+}
+
+
 int
 qemuMonitorSend(qemuMonitorPtr mon,
                 qemuMonitorMessagePtr msg)

src/qemu/qemu_monitor_priv.h

+/*
+ * qemu_monitor_priv.h: interaction with QEMU monitor console (private)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __QEMU_MONITOR_PRIV_H_ALLOW__
+# error "qemu_monitor_priv.h may only be included by qemu_monitor.c or test suites"
+#endif
+
+#ifndef __QEMU_MONITOR_PRIV_H__
+# define __QEMU_MONITOR_PRIV_H__
+
+# include "qemu_monitor.h"
+
+void
+qemuMonitorResetCommandID(qemuMonitorPtr mon);
+
+#endif