Test::MockObject::Extends(3)

NAME
Test::MockObject::Extends - mock part of an object or class

SYNOPSIS
  use Some::Class;
  use Test::MockObject::Extends;

  my $object      = Some::Class->new();
  my $mock_object = Test::MockObject::Extends->new( $object );

  $mock_object->set_true( 'parent_method' );

DESCRIPTION
Test::MockObject::Extends lets you mock one or more methods of an existing object or class. This can be very handy when you're testing a well-factored module that does almost exactly what you want. Wouldn't it be handy to take control of a method or two to make sure you receive testable results? Now you can.

METHODS

"new( $object | $class )"
    "new()" takes one optional argument, the object or class to mock. If you're mocking a method for an object that holds internal state, create an appropriate object, then pass it to this constructor.

    If you're mocking an object that does not need state, as in the cases where there's no internal data or you'll only be calling class methods, or where you'll be mocking all of the access to internal data, you can pass in the name of the class to mock partially.

    If you've not yet loaded the class, this method will try to load it for you. This may fail, so beware.

    If you pass no arguments, it will assume you really meant to create a normal "Test::MockObject" object and will oblige you.

"mock( $methodname, $sub_ref )"
    See the documentation for Test::MockObject for all of the ways to mock methods and to retrieve method logging information.

"unmock( $methodname )"
    Removes any active mocking of the named method. This means any calls to that method will hit the method of that name in the class being mocked, if it exists.

"isa( $class )"
    As you'd expect from a mocked object, this will return true for the class it's mocking.

CAVEATS
There may be some weird corner cases with dynamically generated methods in the mocked class. You really should use subroutine declarations though, or at least set "can()" appropriately.

There are also potential name collisions with methods in this module or "Test::MockObject", though this should be rare.

AUTHOR
chromatic, <chromatic at wgz dot org>

Documentation bug fixed by Stevan Little.

BUGS
No known bugs.

COPYRIGHT
Copyright (c) 2004, chromatic. All rights reserved. This module is distributed under the same terms as Perl itself, in the hope that it is useful but certainly under no guarantee.