Test::Output already seems to do what you want. 

 stdout_like( sub{ $obj->run }, qr/as expected regex/, 'output as expe
+cted' );

[download]

Update (response to CR below): When capturing output from an external process, try IO::CaptureOutput: 

use strict;
use warnings;

use Test::More;
use Test::Output;
use IO::CaptureOutput qw(capture);

sub writer { system("echo Hubba") };


#fails:  stdout_like( \&writer, qr/Hubba/ms, "it's a hubba" );

capture { writer() } \my $stdout, \my $stderr;
is( $stdout, "Hubba\n", "system hubba" );

done_testing;

#-- output:
#
#   ok 1 - system hubba
#   1..1

[download]

In reply to Re: How to capture and verify STDOUT of a Perl Module by Perlbotics
in thread How to capture and verify STDOUT of a Perl Module by yuri123

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