Test::Without::Module(3pm)

1Test::Without::Module(3U)ser Contributed Perl DocumentatiToenst::Without::Module(3)
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NAME

6       Test::Without::Module - Test fallback behaviour in absence of modules
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SYNOPSIS

9         use Test::Without::Module qw( My::Module );
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11         # Now, loading of My::Module fails :
12         eval { require My::Module; };
13         warn $@ if $@;
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15         # Now it works again
16         eval q{ no Test::Without::Module qw( My::Module ) };
17         eval { require My::Module; };
18         print "Found My::Module" unless $@;
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DESCRIPTION

21       This module allows you to deliberately hide modules from a program even
22       though they are installed. This is mostly useful for testing modules
23       that have a fallback when a certain dependency module is not installed.
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25   EXPORT
26       None. All magic is done via "use Test::Without::Module LIST" and "no
27       Test::Without::Module LIST".
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29   Test::Without::Module::get_forbidden_list
30       This function returns a reference to a copy of the current hash of
31       forbidden modules or an empty hash if none are currently forbidden.
32       This is convenient if you are testing and/or debugging this module.
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ONE LINER

35       A neat trick for using this module from the command line was mentioned
36       to me by NUFFIN and by Jerrad Pierce:
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38         perl -MTest::Without::Module=Some::Module -w -Iblib/lib t/SomeModule.t
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40       That way, you can easily see how your module or test file behaves when
41       a certain module is unavailable.
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BUGS

44       ·   There is no lexical scoping
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CREDITS

47       Much improvement must be thanked to Aristotle from PerlMonks, he
48       pointed me to a much less convoluted way to fake a module at
49       <https://perlmonks.org?node=192635>.
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51       I also discussed with him an even more elegant way of overriding
52       CORE::GLOBAL::require, but the parsing of the overridden subroutine
53       didn't work out the way I wanted it - CORE::require didn't recognize
54       barewords as such anymore.
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56       NUFFIN and Jerrad Pierce pointed out the convenient use from the
57       command line to interactively watch the behaviour of the test suite and
58       module in absence of a module.
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AUTHOR

61       Copyright (c) 2003-2014 Max Maischein, <corion@cpan.org>
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LICENSE

64       This module is released under the same terms as Perl itself.
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REPOSITORY

67       The public repository of this module is
68       <https://github.com/Corion/test-without-module>.
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SUPPORT

71       The public support forum of this module is <https://perlmonks.org/>.
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BUG TRACKER

74       Please report bugs in this module via the RT CPAN bug queue at
75       <https://rt.cpan.org/Public/Dist/Display.html?Name=Test-Without-Module>
76       or via mail to test-without-module-Bugs@rt.cpan.org.
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