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Test::Class::Most - Test Classes the easy way


Version 0.08


Instead of this:

    use strict;
    use warnings;
    use Test::Exception 0.88;
    use Test::Differences 0.500;
    use Test::Deep 0.106;
    use Test::Warn 0.11;
    use Test::More 0.88;

    use parent 'My::Test::Class';

    sub some_test : Tests { ... }

You type this:

    use Test::Class::Most parent => 'My::Test::Class';

    sub some_test : Tests { ... }


When people write test classes with the excellent Test::Class, you often see the following at the top of the code:

  package Some::Test::Class;

  use strict;
  use warnings;
  use base 'My::Test::Class';
  use Test::More;
  use Test::Exception;

  # and then the tests ...

That's a lot of boilerplate and I don't like boilerplate. So now you can do this:

  use Test::Class::Most parent => 'My::Test::Class';

That automatically imports strict and warnings for you. It also gives you all of the testing goodness from Test::Most.


You probably want to create your own base class for testing. To do this, simply specify no import list:

  package My::Test::Class;
  use Test::Class::Most; # we now inherit from Test::Class

  INIT { Test::Class->runtests }


And then your other classes inherit as normal (well, the way we do it):

  package Tests::For::Foo;
  use Test::Class::Most parent => 'My::Test::Class';

And you can inherit from those other classes, too:

  package Tests::For::Foo::Child;
  use Test::Class::Most parent => 'Tests::For::Foo';

Of course, it's quite possible that you're a fan of multiple inheritance, so you can do that, too (I was soooooo tempted to not allow this, but I figured I shouldn't force too many of my personal beliefs on you):

 package Tests::For::ISuckAtOO;
 use Test::Class::Most parent => [qw/

As a side note, it's recommended that even if you don't need test control methods in your base class, put stubs in there:

  package My::Test::Class;
  use Test::Class::Most; # we now inherit from Test::Class

  INIT { Test::Class->runtests }

  sub startup  : Tests(startup)  {}
  sub setup    : Tests(setup)    {}
  sub teardown : Tests(teardown) {}
  sub shutdown : Tests(shutdown) {}


This allows developers to always be able to safely call parent test control methods rather than wonder if they are there:

  package Tests::For::Customer;
  use Test::Class::Most parent => 'My::Test::Class';

  sub setup : Tests(setup) {
    my $test = shift;
    $test->next::method; # safe due to stub in base class


You can also specify "attributes" which are merely very simple getter/setters.

  use Test::Class::Most 
    parent      => 'My::Test::Class',
    attributes  => [qw/customer items/],
    is_abstract => 1;

  sub setup : Tests(setup) {
    my $test = shift;
    $test->customer( ... );
    $test->items( ... );

  sub some_tests : Tests {
    my $test     = shift;
    my $customer = $test->customer;

If called with no arguments, returns the current value. If called with one argument, sets that argument as the current value. If called with more than one argument, it croaks.


You may pass an optional is_abstract parameter in the import list. It takes a boolean value. This value is advisory only and is not inherited. It defaults to false if not provided.

Sometimes you want to identify a test class as "abstract". It may have a bunch of tests, but those should only run for its subclasses. You can pass <is_abstract = 1>> in the import list. Then, to test if a given class or instance of that class is "abstract":

 sub dont_run_in_abstract_base_class : Tests {
     my $test = shift;
     return if Test::Class::Most->is_abstract($test);

Note that is_abstract is strictly advisory only. You are expected (required) to check the value yourself and take appropriate action.

We recommend adding the following method to your base class:

 sub is_abstract {
     my $test = shift;
     return Test::Class::Most->is_abstract($test);

And later in a subclass:

 if ( $test->is_abstract ) { ... }


All functions from Test::Most are automatically exported into your namespace.


If you're not familiar with using Test::Class, please see my tutorial at:


Curtis "Ovid" Poe, <ovid at>


Please report any bugs or feature requests to bug-test-class-most at, or through the web interface at I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.


You can find documentation for this module with the perldoc command.

    perldoc Test::Class::Most

You can also look for information at:



Thanks to Adrian Howard for Test::Class, Adam Kennedy for maintaining it and chromatic for Modern::Perl.


Copyright 2010 Curtis "Ovid" Poe, all rights reserved.

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