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Test::Harness(3pm)                    Perl Programmers Reference Guide                    Test::Harness(3pm)



NAME
       Test::Harness - Run Perl standard test scripts with statistics

VERSION
       Version 3.23

SYNOPSIS
         use Test::Harness;

         runtests(@test_files);

DESCRIPTION
       Although, for historical reasons, the Test::Harness distribution takes its name from this module it
       now exists only to provide TAP::Harness with an interface that is somewhat backwards compatible with
       Test::Harness 2.xx. If you're writing new code consider using TAP::Harness directly instead.

       Emulation is provided for "runtests" and "execute_tests" but the pluggable 'Straps' interface that
       previous versions of Test::Harness supported is not reproduced here. Straps is now available as a
       stand alone module: Test::Harness::Straps.

       See TAP::Parser, TAP::Harness for the main documentation for this distribution.

FUNCTIONS
       The following functions are available.

   runtests( @test_files )
       This runs all the given @test_files and divines whether they passed or failed based on their output
       to STDOUT (details above).  It prints out each individual test which failed along with a summary
       report and a how long it all took.

       It returns true if everything was ok.  Otherwise it will "die()" with one of the messages in the
       DIAGNOSTICS section.

   execute_tests( tests => \@test_files, out => \*FH )
       Runs all the given @test_files (just like "runtests()") but doesn't generate the final report.
       During testing, progress information will be written to the currently selected output filehandle
       (usually "STDOUT"), or to the filehandle given by the "out" parameter.  The out is optional.

       Returns a list of two values, $total and $failed, describing the results.  $total is a hash ref
       summary of all the tests run.  Its keys and values are this:

           bonus           Number of individual todo tests unexpectedly passed
           max             Number of individual tests ran
           ok              Number of individual tests passed
           sub_skipped     Number of individual tests skipped
           todo            Number of individual todo tests

           files           Number of test files ran
           good            Number of test files passed
           bad             Number of test files failed
           tests           Number of test files originally given
           skipped         Number of test files skipped

       If "$total->{bad} == 0" and "$total->{max} > 0", you've got a successful test.

       $failed is a hash ref of all the test scripts that failed.  Each key is the name of a test script,
       each value is another hash representing how that script failed.  Its keys are these:

           name        Name of the test which failed
           estat       Script's exit value
           wstat       Script's wait status
           max         Number of individual tests
           failed      Number which failed
           canon       List of tests which failed (as string).

       $failed should be empty if everything passed.

EXPORT
       &runtests is exported by "Test::Harness" by default.

       &execute_tests, $verbose, $switches and $debug are exported upon request.

ENVIRONMENT VARIABLES THAT TAP::HARNESS::COMPATIBLE SETS
       "Test::Harness" sets these before executing the individual tests.

       "HARNESS_ACTIVE"
           This is set to a true value.  It allows the tests to determine if they are being executed through
           the harness or by any other means.

       "HARNESS_VERSION"
           This is the version of "Test::Harness".

ENVIRONMENT VARIABLES THAT AFFECT TEST::HARNESS
       "HARNESS_TIMER"
           Setting this to true will make the harness display the number of milliseconds each test took.
           You can also use prove's "--timer" switch.

       "HARNESS_VERBOSE"
           If true, "Test::Harness" will output the verbose results of running its tests.  Setting
           $Test::Harness::verbose will override this, or you can use the "-v" switch in the prove utility.

       "HARNESS_OPTIONS"
           Provide additional options to the harness. Currently supported options are:

           "j<n>"
               Run <n> (default 9) parallel jobs.

           "c" Try to color output. See "new" in TAP::Formatter::Base.

           Multiple options may be separated by colons:

               HARNESS_OPTIONS=j9:c make test

       "HARNESS_SUBCLASS"
           Specifies a TAP::Harness subclass to be used in place of TAP::Harness.

Taint Mode
       Normally when a Perl program is run in taint mode the contents of the "PERL5LIB" environment variable
       do not appear in @INC.

       Because "PERL5LIB" is often used during testing to add build directories to @INC "Test::Harness"
       passes the names of any directories found in "PERL5LIB" as -I switches. The net effect of this is
       that "PERL5LIB" is honoured even in taint mode.

SEE ALSO
       TAP::Harness

BUGS
       Please report any bugs or feature requests to "bug-test-harness at rt.cpan.org", or through the web
       interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Test-Harness
       <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Test-Harness>.  I will be notified, and then you'll
       automatically be notified of progress on your bug as I make changes.

AUTHORS
       Andy Armstrong  "<andy@hexten.net>"

       Test::Harness 2.64 (maintained by Andy Lester and on which this module is based) has this
       attribution:

           Either Tim Bunce or Andreas Koenig, we don't know. What we know for
           sure is, that it was inspired by Larry Wall's F<TEST> script that came
           with perl distributions for ages. Numerous anonymous contributors
           exist.  Andreas Koenig held the torch for many years, and then
           Michael G Schwern.

LICENCE AND COPYRIGHT
       Copyright (c) 2007-2011, Andy Armstrong "<andy@hexten.net>". All rights reserved.

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl
       itself. See perlartistic.



perl v5.16.2                                     2012-10-25                               Test::Harness(3pm)