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.\" ========================================================================
.\"
.IX Title "TAP::Harness::Env 3perl"
.TH TAP::Harness::Env 3perl "2021-09-24" "perl v5.32.1" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
TAP::Harness::Env \- Parsing harness related environmental variables where appropriate
.SH "VERSION"
.IX Header "VERSION"
Version 3.42
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& my $harness = TAP::Harness::Env\->create(\e%extra_args)
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module implements the environmental variables that Test::Harness uses with TAP::Harness, and instantiates the appropriate class with the appropriate arguments.
.SH "METHODS"
.IX Header "METHODS"
.IP "\(bu" 4
create( \e%args )
.Sp
This function reads the environment and generates an appropriate argument hash from it. If given any arguments in \f(CW%extra_args\fR, these will override the environmental defaults. In accepts \f(CW\*(C`harness_class\*(C'\fR (which defaults to \f(CW\*(C`TAP::Harness\*(C'\fR), and any argument the harness class accepts.
.SH "ENVIRONMENTAL VARIABLES"
.IX Header "ENVIRONMENTAL VARIABLES"
.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.
.ie n .IP """HARNESS_VERBOSE""" 4
.el .IP "\f(CWHARNESS_VERBOSE\fR" 4
.IX Item "HARNESS_VERBOSE"
If true, \f(CW\*(C`TAP::Harness\*(C'\fR will output the verbose results of running
its tests.
.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_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_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_COLOR""" 4
.el .IP "\f(CWHARNESS_COLOR\fR" 4
.IX Item "HARNESS_COLOR"
Attempt to produce color output.
.ie n .IP """HARNESS_IGNORE_EXIT""" 4
.el .IP "\f(CWHARNESS_IGNORE_EXIT\fR" 4
.IX Item "HARNESS_IGNORE_EXIT"
If set to a true value instruct \f(CW\*(C`TAP::Parser\*(C'\fR to ignore exit and wait
status from test scripts.