qemu-iotests: make cancel_and_wait() common

The cancel_and_wait() function has been duplicated in 030 and 041.  Move
it into iotests.py and let it return the event so tests can perform
additional asserts.

Note that 041's cancel_and_wait(wait_ready=True) is replaced by
wait_ready_and_cancel(), which uses the new wait_ready() and
cancel_and_wait() underneath.

Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 0 insertions, 15 deletions

diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030
index 03dd6a6a9e..1f5509566c 100755
--- a/tests/qemu-iotests/030
+++ b/tests/qemu-iotests/030
@@ -31,21 +31,6 @@ test_img = os.path.join(iotests.test_dir, 'test.img')
 class ImageStreamingTestCase(iotests.QMPTestCase):
     '''Abstract base class for image streaming test cases'''
 
-    def cancel_and_wait(self, drive='drive0'):
-        '''Cancel a block job and wait for it to finish'''
-        result = self.vm.qmp('block-job-cancel', device=drive)
-        self.assert_qmp(result, 'return', {})
-
-        cancelled = False
-        while not cancelled:
-            for event in self.vm.get_qmp_events(wait=True):
-                if event['event'] == 'BLOCK_JOB_CANCELLED':
-                    self.assert_qmp(event, 'data/type', 'stream')
-                    self.assert_qmp(event, 'data/device', drive)
-                    cancelled = True
-
-        self.assert_no_active_block_jobs()
-
     def create_image(self, name, size):
         file = open(name, 'w')
         i = 0