# $Id: 06refcnt.t,v 0.22 2007/07/25 03:41:06 ray Exp $

# Before `make install' is performed this script should be runnable with

# `make test'. After `make install' it should work as `perl test.pl'

######################### We start with some black magic to print on failure.

# Change 1..1 below to 1..last_test_to_print .

# (It may become useful if the test is moved to ./t subdirectory.)

my $HAS_WEAKEN;

BEGIN {

  $| = 1;

  my $plan = 20;

  eval 'use Scalar::Util qw( weaken isweak );';

  if ($@) {

    $HAS_WEAKEN = 0;

    $plan = 15;

  }

  else {

    $HAS_WEAKEN = 1;

  }

  print "1..$plan\n";

}

END {print "not ok 1\n" unless $loaded;}

use Clone qw( clone );

$loaded = 1;

print "ok 1\n";

######################### End of black magic.

# Insert your test code below (better if it prints "ok 13"

# (correspondingly "not ok 13") depending on the success of chunk 13

# of the test code):

# code to test for memory leaks

## use Benchmark;

## use Data::Dumper;

# use Storable qw( dclone );

$^W = 1;

$test = 2;

sub ok     { printf("ok %d\n", $test++); }

sub not_ok { printf("not ok %d\n", $test++); }

use strict;

package Test::Hash;

@Test::Hash::ISA = qw( Clone );

sub new()

{

  my ($class) = @_;

  my $self = {};

  bless $self, $class;

}

my $ok = 0;

END { $ok = 1; };

sub DESTROY

{

  my $self = shift;

  printf("not ") if $ok;

  printf("ok %d\n", $::test++);

}

package main;

{

  my $a = Test::Hash->new();

  my $b = $a->clone;

  # my $c = dclone($a);

}

# benchmarking bug

{

  my $a = Test::Hash->new();

  my $sref = sub { my $b = clone($a) };

  $sref->();

}

# test for cloning unblessed ref

{

  my $a = {};

  my $b = clone($a);

  bless $a, 'Test::Hash';

  bless $b, 'Test::Hash';

}

# test for cloning unblessed ref

{

  my $a = [];

  my $b = clone($a);

  bless $a, 'Test::Hash';

  bless $b, 'Test::Hash';

}

# test for cloning ref that was an int(IV)

{

  my $a = 1;

  $a = [];

  my $b = clone($a);

  bless $a, 'Test::Hash';

  bless $b, 'Test::Hash';

}

# test for cloning ref that was a string(PV)

{

  my $a = '';

  $a = [];

  my $b = clone($a);

  bless $a, 'Test::Hash';

  bless $b, 'Test::Hash';

}

# test for cloning ref that was a magic(PVMG)

{

  my $a = *STDOUT;

  $a = [];

  my $b = clone($a);

  bless $a, 'Test::Hash';

  bless $b, 'Test::Hash';

}

# test for cloning weak reference

if ( $HAS_WEAKEN ) {

  {

    my $a = new Test::Hash();

    my $b = { r => $a };

    $a->{r} = $b;

    weaken($b->{'r'});

    my $c = clone($a);

  }

  # another weak reference problem, this one causes a segfault in 0.24

  {

    my $a = new Test::Hash();

    {

      my $b = [ $a, $a ];

      $a->{r} = $b;

      weaken($b->[0]);

      weaken($b->[1]);

    }

    my $c = clone($a);

    # check that references point to the same thing

    print  "not " unless $c->{'r'}[0] == $c->{'r'}[1];

    printf "ok %d\n", $::test++;

  }

}