Test::Unit::Runner - abstract base class for test runners

       Copyright (c) 2000-2002, 2005 the PerlUnit Development Team (see Test::Unit or the AUTHORS file included
       in this distribution).

       All rights reserved. This program is free software; you can redistribute it and/or modify it under the
       same terms as Perl itself.

       This class is a parent class of all test runners, and hence is not intended to be used directly.  It
       provides functionality such as state (e.g. run-time options) available to all runner classes.

   suites_running()
       Returns an array stack of the current suites running.  When a new suite is started, it is pushed on the
       stack, and it is popped on completion.  Hence the first element in the returned array is the top-level
       suite, and the last is the innermost suite.

   filter([@tokens])
       Set the runner's filter tokens to the given list.

   reset_filter()
       Clears the current filter.

       Test::Unit::Runner - abstract base class for test runners

       Test::Unit::HarnessUnit, Test::Unit::TestRunner, Test::Unit::TkTestRunner

perl v5.38.2                                       2024-07-27                            Test::Unit::Runner(3pm)

           my $runner = Test::Unit::TestRunner->new();
           $runner->filter(@filter_tokens);
           $runner->start(...);