Test::Harness - Online Linux Manual PageSection : 3
Updated : 2022-01-21
Source : perl v5.34.0
Note : User Contributed Perl Documentation
NAMETest::Harness − Run Perl standard test scripts with statistics
VERSIONVersion 3.43
SYNOPSIS​ use Test::Harness; ​ ​ runtests(@test_files);
DESCRIPTIONAlthough, 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.
FUNCTIONSThe 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::HARNESSHARNESS_PERL_SWITCHES Setting this adds perl command line switches to each test file run. For example, HARNESS_PERL_SWITCHES=−T will turn on taint mode. ​HARNESS_PERL_SWITCHES=−MDevel::Cover will run Devel::Cover for each test. ​−w is always set. You can turn this off in the test with BEGIN { $^W = 0 }. 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. a<file.tgz> Will use TAP::Harness::Archive as the harness class, and save the TAP to ​file.tgz fPackage−With−Dashes Set the formatter_class of the harness being run. Since the HARNESS_OPTIONS is seperated by :, we use − instead. 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. HARNESS_SUMMARY_COLOR_SUCCESS Determines the Term::ANSIColor for the summary in case it is successful. This color defaults to 'green'. HARNESS_SUMMARY_COLOR_FAIL Determines the Term::ANSIColor for the failure in case it is successful. This color defaults to 'red'.
Taint ModeNormally 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 ALSOTAP::Harness
BUGSPlease 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>. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.
AUTHORSAndy 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 COPYRIGHTCopyright (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. 0
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