How can I run individual tests with Test::Class::Load?

Question

After having accumulated enough tests that running them all takes some real time, I looked at the Test::Class::Load doc to find a tip for running individual test classes. It provides a manner to do this, but I must be missing something, because I can't make it work. Here's what I have:

My test directory:

drewfus:~/sandbox$ ls t/
lib/  perlcriticrc  PerlCritic.t  Unit.t

t/Unit.t consists of the following:

use strict;
use warnings;

use Test::Class;
use Test::More 'no_plan';
use Test::Class::Load 't/lib';

Per the suggestion in the Test::Class::Load doc, I have a base class for each of my test classes to inherit from, SG::TestBase that lives at t/lib/SG/TestBase.pm:

package SG::TestBase;
use strict;
use warnings;
use base 'Test::Class';

INIT { Test::Class->runtests }

1;

And finally, here is an example test class, SG::UtilsTest at t/lib/SG/UtilsTest.pm:

package SG::UtilsTest;
use strict;
use warnings;
use base 'SG::TestBase';

BEGIN { use_ok('SG::Utils') };
<etc>

Everything is still peachy if I want to run all of the tests with Build test or prove, but trying to run an individual test doesn't work:

drewfus:~/sandbox$  prove -lv SG::UtilsTest
Cannot determine source for SG::UtilsTest at /usr/share/perl/5.10/App/Prove.pm line 496

Answer 1

Congratulations on spotting the mistake in the documentation :-)

The final argument should be the path to the test class - not the package name. You'll also need to add the path to the test class libraries so prove can find them Doing:

  prove -lv -It/lib t/lib/SG/UtilsTest.pm

should work.