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G'day tizatron,

Given that you're really just testing output from your script, Test::Output seems like a good choice; however, although you've loaded that module, you haven't used any of its functionality.

When I read "return $heredoc;", I wondered what this was for (it seemed pointless). I do see that you've questioned this yourself: "I had to add a return() to the usage function to get that test to pass ...". If your tests identify logic errors (or similar) in the code you're testing, then do fix the code; however, don't add questionable code just to make the tests pass.

Here's an example of how you might go about interspersing Test::More and Test::Output tests.

Sample production script (

#!/usr/bin/env perl use strict; use warnings; usage() unless @ARGV; print scalar(@ARGV), ": @ARGV\n"; sub usage { warn "Argument required!\n"; exit; }

Sample test script (pm_script_testing.t):

#!/usr/bin/env perl use strict; use warnings; use Test::More tests => 4; use Test::Output; stderr_is { qx{perl -c} } " syntax OK\n", 'Test Syntax'; stderr_is { qx{} } "Argument required!\n", 'Test Zero Arguments'; is(qx{ 123}, "1: 123\n", 'Test One Argument'); stdout_is { system qw{ 123 qwe} } "2: 123 qwe\n", 'Test Two Arguments';


$ pm_script_testing.t 1..4 ok 1 - Test Syntax ok 2 - Test Zero Arguments ok 3 - Test One Argument ok 4 - Test Two Arguments

If you haven't done so already, you may benefit from reading Test::Tutorial.

-- Ken

In reply to Re: Looking for help for unit tests and code coverage on an existing perl script by kcott
in thread Looking for help for unit tests and code coverage on an existing perl script by tizatron

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