Incompatible file format change

[dbsrgits/DBM-Deep.git] / t / 27_filehandle.t

##
# DBM::Deep Test
##
use strict;
use Test::More tests => 11;
use Test::Exception;
use File::Temp qw( tempfile tempdir );

use_ok( 'DBM::Deep' );

my $dir = tempdir( CLEANUP => 1 );
my ($fh, $filename) = tempfile( 'tmpXXXX', UNLINK => 1, DIR => $dir );

# Create the datafile to be used
{
    my $db = DBM::Deep->new( $filename );
    $db->{hash} = { foo => [ 'a' .. 'c' ] };
}

{
    open(FILE, $filename) || die("Can't open '$filename' for reading: $!\n");

    my $db;

    # test if we can open and read a db using its filehandle

    ok(($db = DBM::Deep->new(fh => *FILE)), "open db in filehandle");
    ok($db->{hash}->{foo}->[1] eq 'b', "and get at stuff in the database");
    throws_ok {
        $db->{foo} = 1;
    } qr/Cannot write to a readonly filehandle/,
      "Can't write to a read-only filehandle";
    ok( !$db->exists( 'foo' ), "foo doesn't exist" );

    my $db_obj = $db->_get_self;
    ok( $db_obj->_root->{inode}, "The inode has been set" );

    close(FILE);
}

# now the same, but with an offset into the file.  Use the database that's
# embedded in the test for the DATA filehandle.  First, find the database ...
open(FILE, "t/28_DATA.t") || die("Can't open t/28_DATA.t\n");
while(my $line = <FILE>) {
    last if($line =~ /^__DATA__/);
}
my $offset = tell(FILE);
close(FILE);

SKIP: {
    skip "File format changed ... gah!", 5;
    open(FILE, "t/28_DATA.t");

    my $db;

    ok(($db = DBM::Deep->new(fh => *FILE, file_offset => $offset)), "open db in filehandle with offset");

    ok($db->{hash}->{foo}->[1] eq 'b', "and get at stuff in the database");

    ok( !$db->exists( 'foo' ), "foo doesn't exist yet" );
    throws_ok {
        $db->{foo} = 1;
    } qr/Cannot write to a readonly filehandle/, "Can't write to a read-only filehandle";
    ok( !$db->exists( 'foo' ), "foo doesn't exist" );

    close FILE;
}