static void test_after_failed_device_add(void) { QDict *response; QDict *error; qtest_start("-drive if=none,id=drive0"); /* Make device_add fail. If this leaks the virtio-blk-pci device then a * reference to drive0 will also be held (via qdev properties). */ response = qmp("{'execute': 'device_add'," " 'arguments': {" " 'driver': 'virtio-blk-pci'," " 'drive': 'drive0'" "}}"); g_assert(response); error = qdict_get_qdict(response, "error"); g_assert_cmpstr(qdict_get_try_str(error, "class"), ==, "GenericError"); QDECREF(response); /* Delete the drive */ drive_del(); /* Try to re-add the drive. This fails with duplicate IDs if a leaked * virtio-blk-pci exists that holds a reference to the old drive0. */ drive_add(); qtest_end(); }