Added huge internal copy test

[dbsrgits/DBM-Deep.git] / t / 22_internal_copy.t

##
# DBM::Deep Test
##
use strict;
use Test::More tests => 13;

use_ok( 'DBM::Deep' );

unlink "t/test.db";
my $db = DBM::Deep->new( "t/test.db" );
if ($db->error()) {
	die "ERROR: " . $db->error();
}

##
# Create structure in $db
##
$db->import(
	hash1 => {
		subkey1 => "subvalue1",
		subkey2 => "subvalue2",
	},
    hash2 => {
        subkey3 => 'subvalue3',
    },
);

is( $db->{hash1}{subkey1}, 'subvalue1', "Value imported correctly" );
is( $db->{hash1}{subkey2}, 'subvalue2', "Value imported correctly" );

$db->{copy} = $db->{hash1};

is( $db->{copy}{subkey1}, 'subvalue1', "Value copied correctly" );
is( $db->{copy}{subkey2}, 'subvalue2', "Value copied correctly" );

$db->{copy}{subkey1} = "another value";
is( $db->{copy}{subkey1}, 'another value', "New value is set correctly" );
is( $db->{hash1}{subkey1}, 'another value', "Old value is set to the new one" );

is( scalar(keys %{$db->{hash1}}), 2, "Start with 2 keys in the original" );
is( scalar(keys %{$db->{copy}}), 2, "Start with 2 keys in the copy" );

delete $db->{copy}{subkey2};

is( scalar(keys %{$db->{copy}}), 1, "Now only have 1 key in the copy" );
is( scalar(keys %{$db->{hash1}}), 1, "... and only 1 key in the original" );

$db->{copy} = $db->{hash2};
is( $db->{copy}{subkey3}, 'subvalue3', "After the second copy, we're still good" );

my $max_keys = 1000;

unlink 't/test2.db';
{
    my $db = DBM::Deep->new( 't/test2.db' );

    $db->{foo} = [ 1 .. 3 ];
    for ( 0 .. $max_keys ) {
        $db->{'foo' . $_} = $db->{foo};
    }
}

{
    my $db = DBM::Deep->new( 't/test2.db' );

    my $base_offset = $db->{foo}->_base_offset;
    my $count = -1;
    for ( 0 .. $max_keys ) {
        $count = $_;
        unless ( $base_offset == $db->{'foo'.$_}->_base_offset ) {
            last;
        }
    }
    is( $count, $max_keys, "We read $count keys" );
}