Test::Memory::Cycle(3pm)

Usage

Perl's garbage collection has one big problem: Circular references can't get cleaned up. A circular reference can be as simple as two references that refer to each other:

    my $mom = {
        name => "Marilyn Lester",
    };
    my $me = {
        name => "Andy Lester",
        mother => $mom,
    };
    $mom->{son} = $me;

"Test::Memory::Cycle" is built on top of "Devel::Cycle" to give you an easy way to check for these circular references.

    use Test::Memory::Cycle;
    my $object = new MyObject;
    # Do stuff with the object.
    memory_cycle_ok( $object );

You can also use memory_cycle_exists() to make sure that you have a cycle where you expect to have one.

Version

Version 1.06

Functions

"memory_cycle_ok( $reference, $msg )"

Checks that $reference doesn't have any circular memory references.

"memory_cycle_exists( $reference, $msg )"

Checks that $reference does have any circular memory references.

"weakened_memory_cycle_ok( $reference, $msg )"

Checks that $reference doesn't have any circular memory references, but unlike "memory_cycle_ok" this will also check for weakened cycles produced with Scalar::Util's "weaken".

"weakened_memory_cycle_exists( $reference, $msg )"

Checks that $reference does have any circular memory references, but unlike "memory_cycle_exists" this will also check for weakened cycles produced with Scalar::Util's "weaken".

Support

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

    perldoc Test::Memory::Cycle

You can also look for information at:

•

AnnoCPAN: Annotated CPAN documentation

<http://annocpan.org/dist/Test-Memory-Cycle>

•

CPAN Ratings

<http://cpanratings.perl.org/d/Test-Memory-Cycle>

•

RT: CPAN's request tracker

<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Test-Memory-Cycle>

•

Search CPAN

<http://search.cpan.org/dist/Test-Memory-Cycle>

Acknowledgements

Thanks to the contributions of Stevan Little, and to Lincoln Stein for writing Devel::Cycle.

Releases

9 releases since Debian 6.0 (Squeeze); the text changed 3 times.