App::Cmd::Tester.3pm

Langue: en

Version: 2010-03-09 (ubuntu - 24/10/10)

Section: 3 (Bibliothèques de fonctions)

NAME

App::Cmd::Tester - for capturing the result of running an app

SYNOPSIS

   use Test::More tests => 4;
   use App::Cmd::Tester;
 
   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');
 
   is($result->error, undef, 'threw no exceptions');
 
   my $result = test_app(YourApp => [ qw(command --opt value --quiet) ]);
 
   is($result->output, '', 'absolutely no output with --quiet');
 
 

DESCRIPTION

One of the reasons that user-executed programs are so often poorly tested is that they are hard to test. App::Cmd::Tester is one of the tools App-Cmd provides to help make it easy to test App::Cmd-based programs.

It provides one routine: test_app.

METHODS

test_app

Note: while "test_app" is a method, it is by default exported as a subroutine into the namespace that uses App::Cmd::Tester. In other words: you probably don't need to think about this as a method unless you want to subclass App::Cmd::Tester.
   my $result = test_app($app_class => \@argv_contents);
 
 

This will locally set @ARGV to simulate command line arguments, and will then call the "run" method on the given application class (or application). Output to the standard output and standard error filehandles will be captured.

$result is an App::Cmd::Tester::Result object, which has methods to access the following data:

   stdout - the output sent to stdout
   stderr - the output sent to stderr
   output - the combined output of stdout and stderr
   error  - the exception thrown by running the application, or undef
   run_rv - the return value of the run method (generally irrelevant)
   exit_code - the numeric exit code that would've been issued (0 is 'okay')
 
 
Copyright 2008, (code (simply)). All rights reserved; App::Cmd and bundled code are free software, released under the same terms as perl itself.