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.\" ========================================================================
.\"
.IX Title "Test::Without::Module 3"
.TH Test::Without::Module 3 "2017-04-09" "perl v5.26.3" "User Contributed Perl Documentation"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.SH "NAME"
Test::Without::Module \- Test fallback behaviour in absence of modules
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& use Test::Without::Module qw( My::Module );
\&
\& # Now, loading of My::Module fails :
\& eval { require My::Module; };
\& warn $@ if $@;
\&
\& # Now it works again
\& eval q{ no Test::Without::Module qw( My::Module ) };
\& eval { require My::Module; };
\& print "Found My::Module" unless $@;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module allows you to deliberately hide modules from a program
even though they are installed. This is mostly useful for testing modules
that have a fallback when a certain dependency module is not installed.
.SS "\s-1EXPORT\s0"
.IX Subsection "EXPORT"
None. All magic is done via \f(CW\*(C`use Test::Without::Module LIST\*(C'\fR and
\&\f(CW\*(C`no Test::Without::Module LIST\*(C'\fR.
.SS "Test::Without::Module::get_forbidden_list"
.IX Subsection "Test::Without::Module::get_forbidden_list"
This function returns a reference to a copy of the current hash of forbidden
modules or an empty hash if none are currently forbidden. This is convenient
if you are testing and/or debugging this module.
.SH "ONE LINER"
.IX Header "ONE LINER"
A neat trick for using this module from the command line
was mentioned to me by \s-1NUFFIN\s0 and by Jerrad Pierce:
.PP
.Vb 1
\& perl \-MTest::Without::Module=Some::Module \-w \-Iblib/lib t/SomeModule.t
.Ve
.PP
That way, you can easily see how your module or test file behaves
when a certain module is unavailable.
.SH "BUGS"
.IX Header "BUGS"
.IP "\(bu" 4
There is no lexical scoping
.SH "CREDITS"
.IX Header "CREDITS"
Much improvement must be thanked to Aristotle from PerlMonks, he pointed me
to a much less convoluted way to fake a module at
<https://perlmonks.org?node=192635>.
.PP
I also discussed with him an even more elegant way of overriding
CORE::GLOBAL::require, but the parsing of the overridden subroutine
didn't work out the way I wanted it \- CORE::require didn't recognize
barewords as such anymore.
.PP
\&\s-1NUFFIN\s0 and Jerrad Pierce pointed out the convenient
use from the command line to interactively watch the
behaviour of the test suite and module in absence
of a module.
.SH "AUTHOR"
.IX Header "AUTHOR"
Copyright (c) 2003\-2014 Max Maischein, <corion@cpan.org>
.SH "LICENSE"
.IX Header "LICENSE"
This module is released under the same terms as Perl itself.
.SH "REPOSITORY"
.IX Header "REPOSITORY"
The public repository of this module is
<https://github.com/Corion/test\-without\-module>.
.SH "SUPPORT"
.IX Header "SUPPORT"
The public support forum of this module is
<https://perlmonks.org/>.
.SH "BUG TRACKER"
.IX Header "BUG TRACKER"
Please report bugs in this module via the \s-1RT CPAN\s0 bug queue at
<https://rt.cpan.org/Public/Dist/Display.html?Name=Test\-Without\-Module>
or via mail to test\-without\-module\-Bugs@rt.cpan.org.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Devel::Hide, Acme::Intraweb, \s-1PAR\s0, perlfunc