test::harness.3

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.\" ========================================================================
.\"
.IX Title "Test::Harness 3"
.TH Test::Harness 3 "2008-01-23" "perl v5.10.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Test::Harness \- Run Perl standard test scripts with statistics
.SH "VERSION"
.IX Header "VERSION"
Version 3.07
.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 for the main documentation for this distribution.
.SH "FUNCTIONS"
.IX Header "FUNCTIONS"
The following functions are available.
.ie n .Sh "runtests( @test_files )"
.el .Sh "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.
.Sh "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_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 """f""" 4
.el .IP "\f(CWf\fR" 4
.IX Item "f"
Use forked parallelism.
.RE
.RS 4
.Sp
Multiple options may be separated by colons:
.Sp
.Vb 1
\&    HARNESS_OPTIONS=j9:f make test
.Ve
.RE
.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`<[e-mail]>\*(C'\fR
.PP
Test::Harness (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\-2008, Andy Armstrong \f(CW\*(C`<[e-mail]>\*(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.