Add a test in order to prevent regressions.
Signed-off-by: NIlya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: NHeiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: NHeiko Carstens <hca@linux.ibm.com>