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TAP::Parser::Scheduler(3perl)    Perl Programmers Reference Guide   TAP::Parser::Scheduler(3perl)



NAME
       TAP::Parser::Scheduler - Schedule tests during parallel testing

VERSION
       Version 3.30

SYNOPSIS
           use TAP::Parser::Scheduler;

DESCRIPTION
METHODS
   Class Methods
       "new"

           my $sched = TAP::Parser::Scheduler->new(tests => \@tests);
           my $sched = TAP::Parser::Scheduler->new(
               tests => [ ['t/test_name.t','Test Description'], ... ],
               rules => \%rules,
           );

       Given 'tests' and optional 'rules' as input, returns a new "TAP::Parser::Scheduler"
       object.  Each member of @tests should be either a a test file name, or a two element
       arrayref, where the first element is a test file name, and the second element is a test
       description. By default, we'll use the test name as the description.

       The optional "rules" attribute provides direction on which tests should be run in parallel
       and which should be run sequentially. If no rule data structure is provided, a default
       data structure is used which makes every test eligible to be run in parallel:

           { par => '**' },

       The rules data structure is documented more in the next section.

   Rules data structure
       The ""rules"" data structure is the the heart of the scheduler. It allows you to express
       simple rules like "run all tests in sequence" or "run all tests in parallel except these
       five tests.". However, the rules structure also supports glob-style pattern matching and
       recursive definitions, so you can also express arbitarily complicated patterns.

       The rule must only have one top level key: either 'par' for "parallel" or 'seq' for
       "sequence".

       Values must be either strings with possible glob-style matching, or arrayrefs of strings
       or hashrefs which follow this pattern recursively.

       Every element in an arrayref directly below a 'par' key is eligible to be run in parallel,
       while vavalues directly below a 'seq' key must be run in sequence.

       Rules examples

       Here are some examples:

           # All tests be run in parallel (the default rule)
           { par => '**' },

           # Run all tests in sequence, except those starting with "p"
           { par => 't/p*.t' },

           # Run all tests in parallel, except those starting with "p"
           {
               seq => [
                         { seq => 't/p*.t' },
                         { par => '**'     },
                      ],
           }

           # Run some  startup tests in sequence, then some parallel tests than some
           # teardown tests in sequence.
           {
               seq => [
                   { seq => 't/startup/*.t' },
                   { par => ['t/a/*.t','t/b/*.t','t/c/*.t'], }
                   { seq => 't/shutdown/*.t' },
               ],
           },

       Rules resolution

       ·   By default, all tests are eligible to be run in parallel. Specifying any of your own
           rules removes this one.

       ·   "First match wins". The first rule that matches a test will be the one that applies.

       ·   Any test which does not match a rule will be run in sequence at the end of the run.

       ·   The existence of a rule does not imply selecting a test. You must still specify the
           tests to run.

       ·   Specifying a rule to allow tests to run in parallel does not make the run in parallel.
           You still need specify the number of parallel "jobs" in your Harness object.

       Glob-style pattern matching for rules

       We implement our own glob-style pattern matching. Here are the patterns it supports:

           ** is any number of characters, including /, within a pathname
           * is zero or more characters within a filename/directory name
           ? is exactly one character within a filename/directory name
           {foo,bar,baz} is any of foo, bar or baz.
           \ is an escape character

   Instance Methods
       "get_all"

       Get a list of all remaining tests.

       "get_job"

       Return the next available job as TAP::Parser::Scheduler::Job object or "undef" if none are
       available. Returns a TAP::Parser::Scheduler::Spinner if the scheduler still has pending
       jobs but none are available to run right now.

       "as_string"

       Return a human readable representation of the scheduling tree.  For example:

           my @tests = (qw{
               t/startup/foo.t
               t/shutdown/foo.t

               t/a/foo.t t/b/foo.t t/c/foo.t t/d/foo.t
           });
           my $sched = TAP::Parser::Scheduler->new(
               tests => \@tests,
               rules => {
                   seq => [
                       { seq => 't/startup/*.t' },
                       { par => ['t/a/*.t','t/b/*.t','t/c/*.t'] },
                       { seq => 't/shutdown/*.t' },
                   ],
               },
           );

       Produces:

           par:
             seq:
               par:
                 seq:
                   par:
                     seq:
                       't/startup/foo.t'
                   par:
                     seq:
                       't/a/foo.t'
                     seq:
                       't/b/foo.t'
                     seq:
                       't/c/foo.t'
                   par:
                     seq:
                       't/shutdown/foo.t'
               't/d/foo.t'

POD ERRORS
       Hey! The above document had some coding errors, which are explained below:

       Around line 103:
           Unknown directive: =over4

       Around line 105:
           '=item' outside of any '=over'



perl v5.20.2                                2014-12-27              TAP::Parser::Scheduler(3perl)


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