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Re: Micro Mocking: using local to help test subs

by Zaxo (Archbishop)
on Jan 13, 2003 at 01:47 UTC ( #226374=note: print w/ replies, xml ) Need Help??


in reply to Micro Mocking: using local to help test subs

I have used a similar technique to subvert Perl builtins and mimic system errors:

use Errno qw( ENOSPC ); { local *CORE::GLOBAL::print = sub { $! = ENOSPC; return}; # make test call # see what happens when a device is full }
A finer grained and more accurate test can be obtained by localizing an open file handle:
{ open local(LOG), '>>', '/dev/full' or die $!; # /dev/full is a Linux thing # call the test }
++adrianh for bringing this up, there is a wealth of devious fun in this idiom.

After Compline,
Zaxo


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