NAME
    Test::Object - Thoroughly testing objects via registered handlers

SYNOPSIS
      ###################################################################
      # In your test module, register test handlers again class names   #
      ###################################################################
  
      package My::ModuleTester;
  
      use Test::More;
      use Test::Object;
  
      # Foo::Bar is a subclass of Foo
      Test::Object->register(
            class => 'Foo',
            tests => 5,
            code  => \&foo_ok,
            );
      Test::Object->register(
            class => 'Foo::Bar',
            # No fixed number of tests
            code  => \&foobar_ok,
            );
  
      sub foo_ok {
            my $object = shift;
            ok( $object->foo, '->foo returns true' );
      }
  
      sub foobar_ok {
            my $object = shift;
            is( $object->foo, 'bar', '->foo returns "bar"' );
      }
  
      1;
  
      ###################################################################
      # In test script, test object against all registered classes      #
      ###################################################################
  
      #!/usr/bin/perl -w
  
      use Test::More 'no_plan';
      use Test::Object;
      use My::ModuleTester;
  
      my $object = Foo::Bar->new;
      isa_ok( $object, 'Foo::Bar' );
      object_ok( $object );

DESCRIPTION
    In situations where you have deep trees of classes, there is a common
    situation in which you test a module 4 or 5 subclasses down, which
    should follow the correct behaviour of not just the subclass, but of all
    the parent classes.

    This should be done to ensure that the implementation of a subclass has
    not somehow "broken" the object's behaviour in a more general sense.

    "Test::Object" is a testing package designed to allow you to easily test
    what you believe is a valid object against the expected behaviour of all
    of the classes in its inheritance tree in one single call.

    To do this, you "register" tests (in the form of CODE or function
    references) with "Test::Object", with each test associated with a
    particular class.

    When you call "object_ok" in your test script, "Test::Object" will check
    the object against all registered tests. For each class that your object
    responds to "$object->isa($class)" for, the appropriate testing function
    will be called.

    Doing it this way allows adapter objects and other things that respond
    to "isa" differently that the default to still be tested against the
    classes that it is advertising itself as correctly.

    This also means that more than one test might be "counted" for each call
    to "object_ok". You should account for this correctly in your expected
    test count.

SUPPORT
    Bugs should be submitted via the CPAN bug tracker, located at

    <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Test-Object>

    For other issues, contact the author.

AUTHOR
    Adam Kennedy <cpan@ali.as>

SEE ALSO
    <http://ali.as/>, Test::More, Test::Builder::Tester, Test::Class

COPYRIGHT
    Copyright 2005, 2006 Adam Kennedy. All rights reserved.

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

    The full text of the license can be found in the LICENSE file included
    with this module.