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.\" ========================================================================
.\"
.IX Title "Test::Harness 3"
.TH Test::Harness 3 "2019-10-24" "perl v5.30.2" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Test::Harness \- Run Perl standard test scripts with statistics
.SH "VERSION"
.IX Header "VERSION"
Version 3.42
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& use Test::Harness;
\&
\& runtests(@test_files);
.Ve
.SH "DESCRIPTION"
.IX Header "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.
.PP
Emulation is provided for \f(CW\*(C`runtests\*(C'\fR and \f(CW\*(C`execute_tests\*(C'\fR 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.
.PP
See TAP::Parser, TAP::Harness for the main documentation for this
distribution.
.SH "FUNCTIONS"
.IX Header "FUNCTIONS"
The following functions are available.
.ie n .SS "runtests( @test_files )"
.el .SS "runtests( \f(CW@test_files\fP )"
.IX Subsection "runtests( @test_files )"
This runs all the given \fI\f(CI@test_files\fI\fR and divines whether they passed
or failed based on their output to \s-1STDOUT\s0 (details above). It prints
out each individual test which failed along with a summary report and
a how long it all took.
.PP
It returns true if everything was ok. Otherwise it will \f(CW\*(C`die()\*(C'\fR with
one of the messages in the \s-1DIAGNOSTICS\s0 section.
.SS "execute_tests( tests => \e@test_files, out => \e*FH )"
.IX Subsection "execute_tests( tests => @test_files, out => *FH )"
Runs all the given \f(CW@test_files\fR (just like \f(CW\*(C`runtests()\*(C'\fR) but
doesn't generate the final report. During testing, progress
information will be written to the currently selected output
filehandle (usually \f(CW\*(C`STDOUT\*(C'\fR), or to the filehandle given by the
\&\f(CW\*(C`out\*(C'\fR parameter. The \fIout\fR is optional.
.PP
Returns a list of two values, \f(CW$total\fR and \f(CW$failed\fR, describing the
results. \f(CW$total\fR is a hash ref summary of all the tests run. Its
keys and values are this:
.PP
.Vb 5
\& bonus Number of individual todo tests unexpectedly passed
\& max Number of individual tests ran
\& ok Number of individual tests passed
\& sub_skipped Number of individual tests skipped
\& todo Number of individual todo tests
\&
\& files Number of test files ran
\& good Number of test files passed
\& bad Number of test files failed
\& tests Number of test files originally given
\& skipped Number of test files skipped
.Ve
.PP
If \f(CW\*(C`$total\->{bad} == 0\*(C'\fR and \f(CW\*(C`$total\->{max} > 0\*(C'\fR, you've
got a successful test.
.PP
\&\f(CW$failed\fR 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:
.PP
.Vb 6
\& name Name of the test which failed
\& estat Script\*(Aqs exit value
\& wstat Script\*(Aqs wait status
\& max Number of individual tests
\& failed Number which failed
\& canon List of tests which failed (as string).
.Ve
.PP
\&\f(CW$failed\fR should be empty if everything passed.
.SH "EXPORT"
.IX Header "EXPORT"
\&\f(CW&runtests\fR is exported by \f(CW\*(C`Test::Harness\*(C'\fR by default.
.PP
\&\f(CW&execute_tests\fR, \f(CW$verbose\fR, \f(CW$switches\fR and \f(CW$debug\fR are
exported upon request.
.SH "ENVIRONMENT VARIABLES THAT TAP::HARNESS::COMPATIBLE SETS"
.IX Header "ENVIRONMENT VARIABLES THAT TAP::HARNESS::COMPATIBLE SETS"
\&\f(CW\*(C`Test::Harness\*(C'\fR sets these before executing the individual tests.
.ie n .IP """HARNESS_ACTIVE""" 4
.el .IP "\f(CWHARNESS_ACTIVE\fR" 4
.IX Item "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.
.ie n .IP """HARNESS_VERSION""" 4
.el .IP "\f(CWHARNESS_VERSION\fR" 4
.IX Item "HARNESS_VERSION"
This is the version of \f(CW\*(C`Test::Harness\*(C'\fR.
.SH "ENVIRONMENT VARIABLES THAT AFFECT TEST::HARNESS"
.IX Header "ENVIRONMENT VARIABLES THAT AFFECT TEST::HARNESS"
.ie n .IP """HARNESS_PERL_SWITCHES""" 4
.el .IP "\f(CWHARNESS_PERL_SWITCHES\fR" 4
.IX Item "HARNESS_PERL_SWITCHES"
Setting this adds perl command line switches to each test file run.
.Sp
For example, \f(CW\*(C`HARNESS_PERL_SWITCHES=\-T\*(C'\fR will turn on taint mode.
\&\f(CW\*(C`HARNESS_PERL_SWITCHES=\-MDevel::Cover\*(C'\fR will run \f(CW\*(C`Devel::Cover\*(C'\fR for
each test.
.Sp
\&\f(CW\*(C`\-w\*(C'\fR is always set. You can turn this off in the test with \f(CW\*(C`BEGIN {
$^W = 0 }\*(C'\fR.
.ie n .IP """HARNESS_TIMER""" 4
.el .IP "\f(CWHARNESS_TIMER\fR" 4
.IX Item "HARNESS_TIMER"
Setting this to true will make the harness display the number of
milliseconds each test took. You can also use \fIprove\fR's \f(CW\*(C`\-\-timer\*(C'\fR
switch.
.ie n .IP """HARNESS_VERBOSE""" 4
.el .IP "\f(CWHARNESS_VERBOSE\fR" 4
.IX Item "HARNESS_VERBOSE"
If true, \f(CW\*(C`Test::Harness\*(C'\fR will output the verbose results of running
its tests. Setting \f(CW$Test::Harness::verbose\fR will override this,
or you can use the \f(CW\*(C`\-v\*(C'\fR switch in the \fIprove\fR utility.
.ie n .IP """HARNESS_OPTIONS""" 4
.el .IP "\f(CWHARNESS_OPTIONS\fR" 4
.IX Item "HARNESS_OPTIONS"
Provide additional options to the harness. Currently supported options are:
.RS 4
.ie n .IP """j<n>""" 4
.el .IP "\f(CWj<n>\fR" 4
.IX Item "j<n>"
Run <n> (default 9) parallel jobs.
.ie n .IP """c""" 4
.el .IP "\f(CWc\fR" 4
.IX Item "c"
Try to color output. See \*(L"new\*(R" in TAP::Formatter::Base.
.ie n .IP """a<file.tgz>""" 4
.el .IP "\f(CWa<file.tgz>\fR" 4
.IX Item "a<file.tgz>"
Will use TAP::Harness::Archive as the harness class, and save the \s-1TAP\s0 to
\&\f(CW\*(C`file.tgz\*(C'\fR
.ie n .IP """fPackage\-With\-Dashes""" 4
.el .IP "\f(CWfPackage\-With\-Dashes\fR" 4
.IX Item "fPackage-With-Dashes"
Set the formatter_class of the harness being run. Since the \f(CW\*(C`HARNESS_OPTIONS\*(C'\fR
is seperated by \f(CW\*(C`:\*(C'\fR, we use \f(CW\*(C`\-\*(C'\fR instead.
.RE
.RS 4
.Sp
Multiple options may be separated by colons:
.Sp
.Vb 1
\& HARNESS_OPTIONS=j9:c make test
.Ve
.RE
.ie n .IP """HARNESS_SUBCLASS""" 4
.el .IP "\f(CWHARNESS_SUBCLASS\fR" 4
.IX Item "HARNESS_SUBCLASS"
Specifies a TAP::Harness subclass to be used in place of TAP::Harness.
.ie n .IP """HARNESS_SUMMARY_COLOR_SUCCESS""" 4
.el .IP "\f(CWHARNESS_SUMMARY_COLOR_SUCCESS\fR" 4
.IX Item "HARNESS_SUMMARY_COLOR_SUCCESS"
Determines the Term::ANSIColor for the summary in case it is successful.
This color defaults to \f(CW\*(Aqgreen\*(Aq\fR.
.ie n .IP """HARNESS_SUMMARY_COLOR_FAIL""" 4
.el .IP "\f(CWHARNESS_SUMMARY_COLOR_FAIL\fR" 4
.IX Item "HARNESS_SUMMARY_COLOR_FAIL"
Determines the Term::ANSIColor for the failure in case it is successful.
This color defaults to \f(CW\*(Aqred\*(Aq\fR.
.SH "Taint Mode"
.IX Header "Taint Mode"
Normally when a Perl program is run in taint mode the contents of the
\&\f(CW\*(C`PERL5LIB\*(C'\fR environment variable do not appear in \f(CW@INC\fR.
.PP
Because \f(CW\*(C`PERL5LIB\*(C'\fR is often used during testing to add build
directories to \f(CW@INC\fR \f(CW\*(C`Test::Harness\*(C'\fR passes the names of any
directories found in \f(CW\*(C`PERL5LIB\*(C'\fR as \-I switches. The net effect of this
is that \f(CW\*(C`PERL5LIB\*(C'\fR is honoured even in taint mode.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
TAP::Harness
.SH "BUGS"
.IX Header "BUGS"
Please report any bugs or feature requests to
\&\f(CW\*(C`bug\-test\-harness at rt.cpan.org\*(C'\fR, 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.
.SH "AUTHORS"
.IX Header "AUTHORS"
Andy Armstrong \f(CW\*(C`<andy@hexten.net>\*(C'\fR
.PP
Test::Harness 2.64 (maintained by Andy Lester and on which this
module is based) has this attribution:
.PP
.Vb 5
\& Either Tim Bunce or Andreas Koenig, we don\*(Aqt know. What we know for
\& sure is, that it was inspired by Larry Wall\*(Aqs 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.
.Ve
.SH "LICENCE AND COPYRIGHT"
.IX Header "LICENCE AND COPYRIGHT"
Copyright (c) 2007\-2011, Andy Armstrong \f(CW\*(C`<andy@hexten.net>\*(C'\fR. All rights reserved.
.PP
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself. See perlartistic.