/usr/share/doc/perl-Test-Simple/t/Legacy
Edit: /usr/share/doc/perl-Test-Simple/t/Legacy/is_deeply_dne_bug.t (887B)
#!/usr/bin/perl -w
# test for rt.cpan.org 20768
#
# There was a bug where the internal "does not exist" object could get
# confused with an overloaded object.
BEGIN {
if( $ENV{PERL_CORE} ) {
chdir 't';
@INC = ('../lib', 'lib');
}
else {
unshift @INC, 't/lib';
}
}
use strict;
use Test::More tests => 2;
{
package Foo;
use overload
'eq' => \&overload_equiv,
'==' => \&overload_equiv;
sub new {
return bless {}, shift;
}
sub overload_equiv {
if (ref($_[0]) ne 'Foo' || ref($_[1]) ne 'Foo') {
print ref($_[0]), " ", ref($_[1]), "\n";
die "Invalid object passed to overload_equiv\n";
}
return 1; # change to 0 ... makes little difference
}
}
my $obj1 = Foo->new();
my $obj2 = Foo->new();
eval { is_deeply([$obj1, $obj2], [$obj1, $obj2]); };
is $@, '';