[C language] system function print output when not expected. Post: 302418492

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app::cmd::tester::captureexternal

App::Cmd::Tester::CaptureExternal(3pm)			User Contributed Perl Documentation		    App::Cmd::Tester::CaptureExternal(3pm)

NAME

       App::Cmd::Tester::CaptureExternal - Extends App::Cmd::Tester to capture from external subprograms

VERSION

       version 0.318

SYNOPSIS

	 use Test::More tests => 4;
	 use App::Cmd::Tester::CaptureExternal;

	 use YourApp;

	 my $result = test_app(YourApp => [ qw(command --opt value) ]);

	 like($result->stdout, qr/expected output/, 'printed what we expected');

	 is($result->stderr, '', 'nothing sent to sderr');

	 ok($result->output, "STDOUT concatenated with STDERR");

DESCRIPTION

       App::Cmd::Tester provides a useful scaffold for testing applications, but it is unable to capture output generated from any external
       subprograms that are invoked from the application.

       This subclass uses an alternate mechanism for capturing output (Capture::Tiny) that does capture from external programs, with one major
       limitation.

       It is not possible to capture externally from both STDOUT and STDERR while also having appropriately interleaved combined output.
       Therefore, the "output" from this subclass simply concatenates the two.

       You can still use "output" for testing if there is any output at all or for testing if something appeared in either output stream, but you
       can't rely on the ordering being correct between lines to STDOUT and lines to STDERR.

AUTHOR

       Ricardo Signes <rjbs@cpan.org>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2012 by Ricardo Signes.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

perl v5.14.2							    2012-05-05				    App::Cmd::Tester::CaptureExternal(3pm)