mysql-testsuite 5.7.22-0ubuntu0.16.04.1 (i386 binary) in ubuntu xenial

 This is an empty package that depends on the current "best" version of
 mysql-testsuite (currently mysql-testsuite-5.7), as determined by the
 MySQL maintainers. Install this package if in doubt about which MySQL
 version you want, as this is the one we consider to be in the best shape.