iotests: Fix 141 when run with qed

69f47505ee has changed qcow2 in such a way that the commit job run in
test 141 (and 144[1]) returns before it emits the READY event.  However,
141 also runs with qed, where the order is still the other way around.
Just filter out the {"return": {}} so the test passes for qed again.

[1] 144 only runs with qcow2, so it is fine as it is.

Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Fixes: 69f47505ee66afaa513305de0c1895a224e52c45
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20190809185253.17535-1-mreitz@redhat.com
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/tests/qemu-iotests/141 b/tests/qemu-iotests/141
index 2197a82d45..8c2ae79f2b 100755
--- a/tests/qemu-iotests/141
+++ b/tests/qemu-iotests/141
@@ -58,16 +58,21 @@ test_blockjob()
               }}}" \
         'return'
 
+    # If "$2" is an event, we may or may not see it before the
+    # {"return": {}}.  Therefore, filter the {"return": {}} out both
+    # here and in the next command.  (Naturally, if we do not see it
+    # here, we will see it before the next command can be executed,
+    # so it will appear in the next _send_qemu_cmd's output.)
     _send_qemu_cmd $QEMU_HANDLE \
         "$1" \
         "$2" \
-        | _filter_img_create
+        | _filter_img_create | _filter_qmp_empty_return
 
     # We want this to return an error because the block job is still running
     _send_qemu_cmd $QEMU_HANDLE \
         "{'execute': 'blockdev-del',
           'arguments': {'node-name': 'drv0'}}" \
-        'error' | _filter_generated_node_ids
+        'error' | _filter_generated_node_ids | _filter_qmp_empty_return
 
     _send_qemu_cmd $QEMU_HANDLE \
         "{'execute': 'block-job-cancel',