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use strict;
use warnings;
use Test::More;
use lib 't/lib';
use lib 't/pvtlib';
use CleanEnv;
use BSON;
use Tie::IxHash;
my $c = BSON->new;
# PERL-543 deflation to BSON then back (via database?) caused undef to be an empty string
subtest 'tied Tie::IxHash' => sub {
my %h;
tie( %h, 'Tie::IxHash', h => undef );
my $bin = $c->encode_one( \%h );
my $doc = $c->decode_one( $bin );
is $doc->{h}, undef, 'round trip undef';
};
subtest 'OO Tie::IxHash' => sub {
my $h = Tie::IxHash->new( h => undef );
my $bin = $c->encode_one( $h );
my $doc = $c->decode_one( $bin );
is $doc->{h}, undef, 'round trip undef';
};
subtest 'standard hash' => sub {
my %doc = ( h => undef );
my $bin = $c->encode_one( \%doc );
my $doc = $c->decode_one( $bin );
is $doc->{h}, undef, 'round trip undef';
};
done_testing;
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