[PATCH 3/4] iotests.py: Add wait_for_runstate()

[Max Reitz]

Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/iotests.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index ef739dd1e3..32f262db5a 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -799,6 +799,10 @@ class VM(qtest.QEMUQtestMachine):
                    'Found node %s under %s (but expected %s)' % \
                    (node['name'], path, expected_node)
 
+    def wait_for_runstate(self, runstate: str) -> None:
+        while self.qmp('query-status')['return']['status'] != runstate:
+            pass
+
 index_re = re.compile(r'([^\[]+)\[([^\]]+)\]')
 
 class QMPTestCase(unittest.TestCase):
-- 
2.26.2