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)