[p5sagit/p5-mst-13.2.git] / t / lib / db-hash.t

#!./perl -w

BEGIN {
    @INC = '../lib';
    require Config; import Config;
    if ($Config{'extensions'} !~ /\bDB_File\b/) {
	print "1..0 # Skip: DB_File was not built\n";
	exit 0;
    }
}

use strict;
use warnings;
use DB_File; 
use Fcntl;

print "1..111\n";

sub ok
{
    my $no = shift ;
    my $result = shift ;
 
    print "not " unless $result ;
    print "ok $no\n" ;
}

{
    package Redirect ;
    use Symbol ;

    sub new
    {
        my $class = shift ;
        my $filename = shift ;
	my $fh = gensym ;
	open ($fh, ">$filename") || die "Cannot open $filename: $!" ;
	my $real_stdout = select($fh) ;
	return bless [$fh, $real_stdout ] ;

    }
    sub DESTROY
    {
        my $self = shift ;
	close $self->[0] ;
	select($self->[1]) ;
    }
}

sub docat_del
{ 
    my $file = shift;
    local $/ = undef;
    open(CAT,$file) || die "Cannot open $file: $!";
    my $result = <CAT>;
    close(CAT);
    unlink $file ;
    return $result;
}   

my $Dfile = "dbhash.tmp";
my $null_keys_allowed = ($DB_File::db_ver < 2.004010 
				|| $DB_File::db_ver >= 3.1 );

unlink $Dfile;

umask(0);

# Check the interface to HASHINFO

my $dbh = new DB_File::HASHINFO ;

ok(1, ! defined $dbh->{bsize}) ;
ok(2, ! defined $dbh->{ffactor}) ;
ok(3, ! defined $dbh->{nelem}) ;
ok(4, ! defined $dbh->{cachesize}) ;
ok(5, ! defined $dbh->{hash}) ;
ok(6, ! defined $dbh->{lorder}) ;

$dbh->{bsize} = 3000 ;
ok(7, $dbh->{bsize} == 3000 );

$dbh->{ffactor} = 9000 ;
ok(8, $dbh->{ffactor} == 9000 );

$dbh->{nelem} = 400 ;
ok(9, $dbh->{nelem} == 400 );

$dbh->{cachesize} = 65 ;
ok(10, $dbh->{cachesize} == 65 );

$dbh->{hash} = "abc" ;
ok(11, $dbh->{hash} eq "abc" );

$dbh->{lorder} = 1234 ;
ok(12, $dbh->{lorder} == 1234 );

# Check that an invalid entry is caught both for store & fetch
eval '$dbh->{fred} = 1234' ;
ok(13, $@ =~ /^DB_File::HASHINFO::STORE - Unknown element 'fred' at/ );
eval 'my $q = $dbh->{fred}' ;
ok(14, $@ =~ /^DB_File::HASHINFO::FETCH - Unknown element 'fred' at/ );


# Now check the interface to HASH
my ($X, %h);
ok(15, $X = tie(%h, 'DB_File',$Dfile, O_RDWR|O_CREAT, 0640, $DB_HASH ) );

my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
   $blksize,$blocks) = stat($Dfile);
ok(16, ($mode & 0777) == ($^O eq 'os2' ? 0666 : 0640) || $^O eq 'amigaos' || $^O eq 'MSWin32' || $^O eq 'NetWare');

my ($key, $value, $i);
while (($key,$value) = each(%h)) {
    $i++;
}
ok(17, !$i );

$h{'goner1'} = 'snork';

$h{'abc'} = 'ABC';
ok(18, $h{'abc'} eq 'ABC' );
ok(19, !defined $h{'jimmy'} );
ok(20, !exists $h{'jimmy'} );
ok(21, exists $h{'abc'} );

$h{'def'} = 'DEF';
$h{'jkl','mno'} = "JKL\034MNO";
$h{'a',2,3,4,5} = join("\034",'A',2,3,4,5);
$h{'a'} = 'A';

#$h{'b'} = 'B';
$X->STORE('b', 'B') ;

$h{'c'} = 'C';

#$h{'d'} = 'D';
$X->put('d', 'D') ;

$h{'e'} = 'E';
$h{'f'} = 'F';
$h{'g'} = 'X';
$h{'h'} = 'H';
$h{'i'} = 'I';

$h{'goner2'} = 'snork';
delete $h{'goner2'};


# IMPORTANT - $X must be undefined before the untie otherwise the
#             underlying DB close routine will not get called.
undef $X ;
untie(%h);


# tie to the same file again, do not supply a type - should default to HASH
ok(22, $X = tie(%h,'DB_File',$Dfile, O_RDWR, 0640) );

# Modify an entry from the previous tie
$h{'g'} = 'G';

$h{'j'} = 'J';
$h{'k'} = 'K';
$h{'l'} = 'L';
$h{'m'} = 'M';
$h{'n'} = 'N';
$h{'o'} = 'O';
$h{'p'} = 'P';
$h{'q'} = 'Q';
$h{'r'} = 'R';
$h{'s'} = 'S';
$h{'t'} = 'T';
$h{'u'} = 'U';
$h{'v'} = 'V';
$h{'w'} = 'W';
$h{'x'} = 'X';
$h{'y'} = 'Y';
$h{'z'} = 'Z';

$h{'goner3'} = 'snork';

delete $h{'goner1'};
$X->DELETE('goner3');

my @keys = keys(%h);
my @values = values(%h);

ok(23, $#keys == 29 && $#values == 29) ;

$i = 0 ;
while (($key,$value) = each(%h)) {
    if ($key eq $keys[$i] && $value eq $values[$i] && $key eq lc($value)) {
	$key =~ y/a-z/A-Z/;
	$i++ if $key eq $value;
    }
}

ok(24, $i == 30) ;

@keys = ('blurfl', keys(%h), 'dyick');
ok(25, $#keys == 31) ;

$h{'foo'} = '';
ok(26, $h{'foo'} eq '' );

# Berkeley DB from version 2.4.10 to 3.0 does not allow null keys.
# This feature was reenabled in version 3.1 of Berkeley DB.
my $result = 0 ;
if ($null_keys_allowed) {
    $h{''} = 'bar';
    $result = ( $h{''} eq 'bar' );
}
else
  { $result = 1 }
ok(27, $result) ;

# check cache overflow and numeric keys and contents
my $ok = 1;
for ($i = 1; $i < 200; $i++) { $h{$i + 0} = $i + 0; }
for ($i = 1; $i < 200; $i++) { $ok = 0 unless $h{$i} == $i; }
ok(28, $ok );

($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
   $blksize,$blocks) = stat($Dfile);
ok(29, $size > 0 );

@h{0..200} = 200..400;
my @foo = @h{0..200};
ok(30, join(':',200..400) eq join(':',@foo) );


# Now check all the non-tie specific stuff

# Check NOOVERWRITE will make put fail when attempting to overwrite
# an existing record.
 
my $status = $X->put( 'x', 'newvalue', R_NOOVERWRITE) ;
ok(31, $status == 1 );
 
# check that the value of the key 'x' has not been changed by the 
# previous test
ok(32, $h{'x'} eq 'X' );

# standard put
$status = $X->put('key', 'value') ;
ok(33, $status == 0 );

#check that previous put can be retrieved
$value = 0 ;
$status = $X->get('key', $value) ;
ok(34, $status == 0 );
ok(35, $value eq 'value' );

# Attempting to delete an existing key should work

$status = $X->del('q') ;
ok(36, $status == 0 );

# Make sure that the key deleted, cannot be retrieved
{
    no warnings 'uninitialized' ;
    ok(37, $h{'q'} eq undef );
}

# Attempting to delete a non-existant key should fail

$status = $X->del('joe') ;
ok(38, $status == 1 );

# Check the get interface

# First a non-existing key
$status = $X->get('aaaa', $value) ;
ok(39, $status == 1 );

# Next an existing key
$status = $X->get('a', $value) ;
ok(40, $status == 0 );
ok(41, $value eq 'A' );

# seq
# ###

# ditto, but use put to replace the key/value pair.

# use seq to walk backwards through a file - check that this reversed is

# check seq FIRST/LAST

# sync
# ####

$status = $X->sync ;
ok(42, $status == 0 );


# fd
# ##

$status = $X->fd ;
ok(43, $status != 0 );

undef $X ;
untie %h ;

unlink $Dfile;

# clear
# #####

ok(44, tie(%h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $DB_HASH ) );
foreach (1 .. 10)
  { $h{$_} = $_ * 100 }

# check that there are 10 elements in the hash
$i = 0 ;
while (($key,$value) = each(%h)) {
    $i++;
}
ok(45, $i == 10);

# now clear the hash
%h = () ;

# check it is empty
$i = 0 ;
while (($key,$value) = each(%h)) {
    $i++;
}
ok(46, $i == 0);

untie %h ;
unlink $Dfile ;


# Now try an in memory file
ok(47, $X = tie(%h, 'DB_File',undef, O_RDWR|O_CREAT, 0640, $DB_HASH ) );

# fd with an in memory file should return fail
$status = $X->fd ;
ok(48, $status == -1 );

undef $X ;
untie %h ;

{
    # check ability to override the default hashing
    my %x ;
    my $filename = "xyz" ;
    my $hi = new DB_File::HASHINFO ;
    $::count = 0 ;
    $hi->{hash} = sub { ++$::count ; length $_[0] } ;
    ok(49, tie %x, 'DB_File', $filename, O_RDWR|O_CREAT, 0640, $hi ) ;
    $h{"abc"} = 123 ;
    ok(50, $h{"abc"} == 123) ;
    untie %x ;
    unlink $filename ;
    ok(51, $::count >0) ;
}

{
    # check that attempting to tie an array to a DB_HASH will fail

    my $filename = "xyz" ;
    my @x ;
    eval { tie @x, 'DB_File', $filename, O_RDWR|O_CREAT, 0640, $DB_HASH ; } ;
    ok(52, $@ =~ /^DB_File can only tie an associative array to a DB_HASH database/) ;
    unlink $filename ;
}

{
   # sub-class test

   package Another ;

   use warnings ;
   use strict ;

   open(FILE, ">SubDB.pm") or die "Cannot open SubDB.pm: $!\n" ;
   print FILE <<'EOM' ;

   package SubDB ;

   use warnings ;
   use strict ;
   use vars qw( @ISA @EXPORT) ;

   require Exporter ;
   use DB_File;
   @ISA=qw(DB_File);
   @EXPORT = @DB_File::EXPORT ;

   sub STORE { 
	my $self = shift ;
        my $key = shift ;
        my $value = shift ;
        $self->SUPER::STORE($key, $value * 2) ;
   }

   sub FETCH { 
	my $self = shift ;
        my $key = shift ;
        $self->SUPER::FETCH($key) - 1 ;
   }

   sub put { 
	my $self = shift ;
        my $key = shift ;
        my $value = shift ;
        $self->SUPER::put($key, $value * 3) ;
   }

   sub get { 
	my $self = shift ;
        $self->SUPER::get($_[0], $_[1]) ;
	$_[1] -= 2 ;
   }

   sub A_new_method
   {
	my $self = shift ;
        my $key = shift ;
        my $value = $self->FETCH($key) ;
	return "[[$value]]" ;
   }

   1 ;
EOM

    close FILE ;

    BEGIN { push @INC, '.'; }             
    eval 'use SubDB ; ';
    main::ok(53, $@ eq "") ;
    my %h ;
    my $X ;
    eval '
	$X = tie(%h, "SubDB","dbhash.tmp", O_RDWR|O_CREAT, 0640, $DB_HASH );
	' ;

    main::ok(54, $@ eq "") ;

    my $ret = eval '$h{"fred"} = 3 ; return $h{"fred"} ' ;
    main::ok(55, $@ eq "") ;
    main::ok(56, $ret == 5) ;

    my $value = 0;
    $ret = eval '$X->put("joe", 4) ; $X->get("joe", $value) ; return $value' ;
    main::ok(57, $@ eq "") ;
    main::ok(58, $ret == 10) ;

    $ret = eval ' R_NEXT eq main::R_NEXT ' ;
    main::ok(59, $@ eq "" ) ;
    main::ok(60, $ret == 1) ;

    $ret = eval '$X->A_new_method("joe") ' ;
    main::ok(61, $@ eq "") ;
    main::ok(62, $ret eq "[[11]]") ;

    undef $X;
    untie(%h);
    unlink "SubDB.pm", "dbhash.tmp" ;

}

{
   # DBM Filter tests
   use warnings ;
   use strict ;
   my (%h, $db) ;
   my ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   unlink $Dfile;

   sub checkOutput
   {
       my($fk, $sk, $fv, $sv) = @_ ;
       return
           $fetch_key eq $fk && $store_key eq $sk && 
	   $fetch_value eq $fv && $store_value eq $sv &&
	   $_ eq 'original' ;
   }
   
   ok(63, $db = tie(%h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $DB_HASH ) );

   $db->filter_fetch_key   (sub { $fetch_key = $_ }) ;
   $db->filter_store_key   (sub { $store_key = $_ }) ;
   $db->filter_fetch_value (sub { $fetch_value = $_}) ;
   $db->filter_store_value (sub { $store_value = $_ }) ;

   $_ = "original" ;

   $h{"fred"} = "joe" ;
   #                   fk   sk     fv   sv
   ok(64, checkOutput( "", "fred", "", "joe")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(65, $h{"fred"} eq "joe");
   #                   fk    sk     fv    sv
   ok(66, checkOutput( "", "fred", "joe", "")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(67, $db->FIRSTKEY() eq "fred") ;
   #                    fk     sk  fv  sv
   ok(68, checkOutput( "fred", "", "", "")) ;

   # replace the filters, but remember the previous set
   my ($old_fk) = $db->filter_fetch_key   
   			(sub { $_ = uc $_ ; $fetch_key = $_ }) ;
   my ($old_sk) = $db->filter_store_key   
   			(sub { $_ = lc $_ ; $store_key = $_ }) ;
   my ($old_fv) = $db->filter_fetch_value 
   			(sub { $_ = "[$_]"; $fetch_value = $_ }) ;
   my ($old_sv) = $db->filter_store_value 
   			(sub { s/o/x/g; $store_value = $_ }) ;
   
   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   $h{"Fred"} = "Joe" ;
   #                   fk   sk     fv    sv
   ok(69, checkOutput( "", "fred", "", "Jxe")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(70, $h{"Fred"} eq "[Jxe]");
   #                   fk   sk     fv    sv
   ok(71, checkOutput( "", "fred", "[Jxe]", "")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(72, $db->FIRSTKEY() eq "FRED") ;
   #                   fk   sk     fv    sv
   ok(73, checkOutput( "FRED", "", "", "")) ;

   # put the original filters back
   $db->filter_fetch_key   ($old_fk);
   $db->filter_store_key   ($old_sk);
   $db->filter_fetch_value ($old_fv);
   $db->filter_store_value ($old_sv);

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   $h{"fred"} = "joe" ;
   ok(74, checkOutput( "", "fred", "", "joe")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(75, $h{"fred"} eq "joe");
   ok(76, checkOutput( "", "fred", "joe", "")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(77, $db->FIRSTKEY() eq "fred") ;
   ok(78, checkOutput( "fred", "", "", "")) ;

   # delete the filters
   $db->filter_fetch_key   (undef);
   $db->filter_store_key   (undef);
   $db->filter_fetch_value (undef);
   $db->filter_store_value (undef);

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   $h{"fred"} = "joe" ;
   ok(79, checkOutput( "", "", "", "")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(80, $h{"fred"} eq "joe");
   ok(81, checkOutput( "", "", "", "")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(82, $db->FIRSTKEY() eq "fred") ;
   ok(83, checkOutput( "", "", "", "")) ;

   undef $db ;
   untie %h;
   unlink $Dfile;
}

{    
    # DBM Filter with a closure

    use warnings ;
    use strict ;
    my (%h, $db) ;

    unlink $Dfile;
    ok(84, $db = tie(%h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $DB_HASH ) );

    my %result = () ;

    sub Closure
    {
        my ($name) = @_ ;
	my $count = 0 ;
	my @kept = () ;

	return sub { ++$count ; 
		     push @kept, $_ ; 
		     $result{$name} = "$name - $count: [@kept]" ;
		   }
    }

    $db->filter_store_key(Closure("store key")) ;
    $db->filter_store_value(Closure("store value")) ;
    $db->filter_fetch_key(Closure("fetch key")) ;
    $db->filter_fetch_value(Closure("fetch value")) ;

    $_ = "original" ;

    $h{"fred"} = "joe" ;
    ok(85, $result{"store key"} eq "store key - 1: [fred]");
    ok(86, $result{"store value"} eq "store value - 1: [joe]");
    ok(87, ! defined $result{"fetch key"} );
    ok(88, ! defined $result{"fetch value"} );
    ok(89, $_ eq "original") ;

    ok(90, $db->FIRSTKEY() eq "fred") ;
    ok(91, $result{"store key"} eq "store key - 1: [fred]");
    ok(92, $result{"store value"} eq "store value - 1: [joe]");
    ok(93, $result{"fetch key"} eq "fetch key - 1: [fred]");
    ok(94, ! defined $result{"fetch value"} );
    ok(95, $_ eq "original") ;

    $h{"jim"}  = "john" ;
    ok(96, $result{"store key"} eq "store key - 2: [fred jim]");
    ok(97, $result{"store value"} eq "store value - 2: [joe john]");
    ok(98, $result{"fetch key"} eq "fetch key - 1: [fred]");
    ok(99, ! defined $result{"fetch value"} );
    ok(100, $_ eq "original") ;

    ok(101, $h{"fred"} eq "joe");
    ok(102, $result{"store key"} eq "store key - 3: [fred jim fred]");
    ok(103, $result{"store value"} eq "store value - 2: [joe john]");
    ok(104, $result{"fetch key"} eq "fetch key - 1: [fred]");
    ok(105, $result{"fetch value"} eq "fetch value - 1: [joe]");
    ok(106, $_ eq "original") ;

    undef $db ;
    untie %h;
    unlink $Dfile;
}		

{
   # DBM Filter recursion detection
   use warnings ;
   use strict ;
   my (%h, $db) ;
   unlink $Dfile;

   ok(107, $db = tie(%h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $DB_HASH ) );

   $db->filter_store_key (sub { $_ = $h{$_} }) ;

   eval '$h{1} = 1234' ;
   ok(108, $@ =~ /^recursion detected in filter_store_key at/ );
   
   undef $db ;
   untie %h;
   unlink $Dfile;
}


{
   # Examples from the POD

  my $file = "xyzt" ;
  {
    my $redirect = new Redirect $file ;

    use warnings FATAL => qw(all);
    use strict ;
    use DB_File ;
    use vars qw( %h $k $v ) ;

    unlink "fruit" ;
    tie %h, "DB_File", "fruit", O_RDWR|O_CREAT, 0640, $DB_HASH 
        or die "Cannot open file 'fruit': $!\n";

    # Add a few key/value pairs to the file
    $h{"apple"} = "red" ;
    $h{"orange"} = "orange" ;
    $h{"banana"} = "yellow" ;
    $h{"tomato"} = "red" ;

    # Check for existence of a key
    print "Banana Exists\n\n" if $h{"banana"} ;

    # Delete a key/value pair.
    delete $h{"apple"} ;

    # print the contents of the file
    while (($k, $v) = each %h)
      { print "$k -> $v\n" }

    untie %h ;

    unlink "fruit" ;
  }  

  ok(109, docat_del($file) eq <<'EOM') ;
Banana Exists

orange -> orange
tomato -> red
banana -> yellow
EOM
   
}

{
    # Bug ID 20001013.009
    #
    # test that $hash{KEY} = undef doesn't produce the warning
    #     Use of uninitialized value in null operation 
    use warnings ;
    use strict ;
    use DB_File ;

    unlink $Dfile;
    my %h ;
    my $a = "";
    local $SIG{__WARN__} = sub {$a = $_[0]} ;
    
    tie %h, 'DB_File', $Dfile or die "Can't open file: $!\n" ;
    $h{ABC} = undef;
    ok(110, $a eq "") ;
    untie %h ;
    unlink $Dfile;
}

{
    # test that %hash = () doesn't produce the warning
    #     Argument "" isn't numeric in entersub
    use warnings ;
    use strict ;
    use DB_File ;

    unlink $Dfile;
    my %h ;
    my $a = "";
    local $SIG{__WARN__} = sub {$a = $_[0]} ;
    
    tie %h, 'DB_File', $Dfile or die "Can't open file: $!\n" ;
    %h = (); ;
    ok(111, $a eq "") ;
    untie %h ;
    unlink $Dfile;
}

exit ;
Commit	Line	Data
7c250e57	1	#!./perl -w
a0d0e21e	2
a0d0e21e	3	BEGIN {
20822f61	4	@INC = '../lib';
a0d0e21e	5	require Config; import Config;
a0d0e21e	6	if ($Config{'extensions'} !~ /\bDB_File\b/) {
45c0de28	7	print "1..0 # Skip: DB_File was not built\n";
a0d0e21e	8	exit 0;
	9	}
	10	}
	11
3245f058	12	use strict;
3245f058	13	use warnings;
a0d0e21e	14	use DB_File;
	15	use Fcntl;
	16
3245f058	17	print "1..111\n";
f6b705ef	18
	19	sub ok
	20	{
	21	my $no = shift ;
	22	my $result = shift ;
	23
	24	print "not " unless $result ;
	25	print "ok $no\n" ;
	26	}
a0d0e21e	27
2c2d71f5	28	{
	29	package Redirect ;
	30	use Symbol ;
	31
	32	sub new
	33	{
	34	my $class = shift ;
	35	my $filename = shift ;
	36	my $fh = gensym ;
	37	open ($fh, ">$filename") \|\| die "Cannot open $filename: $!" ;
	38	my $real_stdout = select($fh) ;
	39	return bless [$fh, $real_stdout ] ;
	40
	41	}
	42	sub DESTROY
	43	{
	44	my $self = shift ;
	45	close $self->[0] ;
	46	select($self->[1]) ;
	47	}
	48	}
	49
	50	sub docat_del
	51	{
	52	my $file = shift;
	53	local $/ = undef;
	54	open(CAT,$file) \|\| die "Cannot open $file: $!";
	55	my $result = <CAT>;
	56	close(CAT);
	57	unlink $file ;
	58	return $result;
	59	}
	60
9fe6733a	61	my $Dfile = "dbhash.tmp";
3245f058	62	my $null_keys_allowed = ($DB_File::db_ver < 2.004010
	63	\|\| $DB_File::db_ver >= 3.1 );
	64
a0d0e21e	65	unlink $Dfile;
	66
	67	umask(0);
	68
	69	# Check the interface to HASHINFO
	70
f6b705ef	71	my $dbh = new DB_File::HASHINFO ;
f6b705ef	72
3fe9a6f1	73	ok(1, ! defined $dbh->{bsize}) ;
	74	ok(2, ! defined $dbh->{ffactor}) ;
	75	ok(3, ! defined $dbh->{nelem}) ;
	76	ok(4, ! defined $dbh->{cachesize}) ;
	77	ok(5, ! defined $dbh->{hash}) ;
	78	ok(6, ! defined $dbh->{lorder}) ;
a0d0e21e	79
a0d0e21e	80	$dbh->{bsize} = 3000 ;
f6b705ef	81	ok(7, $dbh->{bsize} == 3000 );
a0d0e21e	82
a0d0e21e	83	$dbh->{ffactor} = 9000 ;
f6b705ef	84	ok(8, $dbh->{ffactor} == 9000 );
f6b705ef	85
a0d0e21e	86	$dbh->{nelem} = 400 ;
f6b705ef	87	ok(9, $dbh->{nelem} == 400 );
a0d0e21e	88
a0d0e21e	89	$dbh->{cachesize} = 65 ;
f6b705ef	90	ok(10, $dbh->{cachesize} == 65 );
a0d0e21e	91
a0d0e21e	92	$dbh->{hash} = "abc" ;
f6b705ef	93	ok(11, $dbh->{hash} eq "abc" );
a0d0e21e	94
a0d0e21e	95	$dbh->{lorder} = 1234 ;
f6b705ef	96	ok(12, $dbh->{lorder} == 1234 );
a0d0e21e	97
	98	# Check that an invalid entry is caught both for store & fetch
	99	eval '$dbh->{fred} = 1234' ;
f6b705ef	100	ok(13, $@ =~ /^DB_File::HASHINFO::STORE - Unknown element 'fred' at/ );
610ab055	101	eval 'my $q = $dbh->{fred}' ;
f6b705ef	102	ok(14, $@ =~ /^DB_File::HASHINFO::FETCH - Unknown element 'fred' at/ );
a0d0e21e	103
610ab055	104
a0d0e21e	105	# Now check the interface to HASH
3245f058	106	my ($X, %h);
f6b705ef	107	ok(15, $X = tie(%h, 'DB_File',$Dfile, O_RDWR\|O_CREAT, 0640, $DB_HASH ) );
a0d0e21e	108
3245f058	109	my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
a0d0e21e	110	$blksize,$blocks) = stat($Dfile);
2986a63f	111	ok(16, ($mode & 0777) == ($^O eq 'os2' ? 0666 : 0640) \|\| $^O eq 'amigaos' \|\| $^O eq 'MSWin32' \|\| $^O eq 'NetWare');
a0d0e21e	112
3245f058	113	my ($key, $value, $i);
a0d0e21e	114	while (($key,$value) = each(%h)) {
	115	$i++;
	116	}
f6b705ef	117	ok(17, !$i );
a0d0e21e	118
	119	$h{'goner1'} = 'snork';
	120
	121	$h{'abc'} = 'ABC';
f6b705ef	122	ok(18, $h{'abc'} eq 'ABC' );
	123	ok(19, !defined $h{'jimmy'} );
	124	ok(20, !exists $h{'jimmy'} );
	125	ok(21, exists $h{'abc'} );
a0d0e21e	126
	127	$h{'def'} = 'DEF';
	128	$h{'jkl','mno'} = "JKL\034MNO";
	129	$h{'a',2,3,4,5} = join("\034",'A',2,3,4,5);
	130	$h{'a'} = 'A';
	131
	132	#$h{'b'} = 'B';
	133	$X->STORE('b', 'B') ;
	134
	135	$h{'c'} = 'C';
	136
	137	#$h{'d'} = 'D';
	138	$X->put('d', 'D') ;
	139
	140	$h{'e'} = 'E';
	141	$h{'f'} = 'F';
	142	$h{'g'} = 'X';
	143	$h{'h'} = 'H';
	144	$h{'i'} = 'I';
	145
	146	$h{'goner2'} = 'snork';
	147	delete $h{'goner2'};
	148
	149
	150	# IMPORTANT - $X must be undefined before the untie otherwise the
	151	# underlying DB close routine will not get called.
	152	undef $X ;
	153	untie(%h);
	154
	155
	156	# tie to the same file again, do not supply a type - should default to HASH
f6b705ef	157	ok(22, $X = tie(%h,'DB_File',$Dfile, O_RDWR, 0640) );
a0d0e21e	158
	159	# Modify an entry from the previous tie
	160	$h{'g'} = 'G';
	161
	162	$h{'j'} = 'J';
	163	$h{'k'} = 'K';
	164	$h{'l'} = 'L';
	165	$h{'m'} = 'M';
	166	$h{'n'} = 'N';
	167	$h{'o'} = 'O';
	168	$h{'p'} = 'P';
	169	$h{'q'} = 'Q';
	170	$h{'r'} = 'R';
	171	$h{'s'} = 'S';
	172	$h{'t'} = 'T';
	173	$h{'u'} = 'U';
	174	$h{'v'} = 'V';
	175	$h{'w'} = 'W';
	176	$h{'x'} = 'X';
	177	$h{'y'} = 'Y';
	178	$h{'z'} = 'Z';
	179
	180	$h{'goner3'} = 'snork';
	181
	182	delete $h{'goner1'};
	183	$X->DELETE('goner3');
	184
3245f058	185	my @keys = keys(%h);
3245f058	186	my @values = values(%h);
a0d0e21e	187
f6b705ef	188	ok(23, $#keys == 29 && $#values == 29) ;
a0d0e21e	189
f6b705ef	190	$i = 0 ;
55d68b4a	191	while (($key,$value) = each(%h)) {
2f52a358	192	if ($key eq $keys[$i] && $value eq $values[$i] && $key eq lc($value)) {
a0d0e21e	193	$key =~ y/a-z/A-Z/;
	194	$i++ if $key eq $value;
	195	}
	196	}
	197
f6b705ef	198	ok(24, $i == 30) ;
a0d0e21e	199
55d68b4a	200	@keys = ('blurfl', keys(%h), 'dyick');
f6b705ef	201	ok(25, $#keys == 31) ;
a0d0e21e	202
a0d0e21e	203	$h{'foo'} = '';
f6b705ef	204	ok(26, $h{'foo'} eq '' );
a0d0e21e	205
3245f058	206	# Berkeley DB from version 2.4.10 to 3.0 does not allow null keys.
	207	# This feature was reenabled in version 3.1 of Berkeley DB.
	208	my $result = 0 ;
	209	if ($null_keys_allowed) {
	210	$h{''} = 'bar';
	211	$result = ( $h{''} eq 'bar' );
	212	}
	213	else
	214	{ $result = 1 }
	215	ok(27, $result) ;
a0d0e21e	216
a0d0e21e	217	# check cache overflow and numeric keys and contents
3245f058	218	my $ok = 1;
a0d0e21e	219	for ($i = 1; $i < 200; $i++) { $h{$i + 0} = $i + 0; }
a0d0e21e	220	for ($i = 1; $i < 200; $i++) { $ok = 0 unless $h{$i} == $i; }
f6b705ef	221	ok(28, $ok );
a0d0e21e	222
	223	($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
	224	$blksize,$blocks) = stat($Dfile);
f6b705ef	225	ok(29, $size > 0 );
a0d0e21e	226
a0d0e21e	227	@h{0..200} = 200..400;
3245f058	228	my @foo = @h{0..200};
f6b705ef	229	ok(30, join(':',200..400) eq join(':',@foo) );
a0d0e21e	230
	231
	232	# Now check all the non-tie specific stuff
	233
	234	# Check NOOVERWRITE will make put fail when attempting to overwrite
	235	# an existing record.
	236
3245f058	237	my $status = $X->put( 'x', 'newvalue', R_NOOVERWRITE) ;
f6b705ef	238	ok(31, $status == 1 );
a0d0e21e	239
	240	# check that the value of the key 'x' has not been changed by the
	241	# previous test
f6b705ef	242	ok(32, $h{'x'} eq 'X' );
a0d0e21e	243
	244	# standard put
	245	$status = $X->put('key', 'value') ;
f6b705ef	246	ok(33, $status == 0 );
a0d0e21e	247
a0d0e21e	248	#check that previous put can be retrieved
f6b705ef	249	$value = 0 ;
a0d0e21e	250	$status = $X->get('key', $value) ;
f6b705ef	251	ok(34, $status == 0 );
f6b705ef	252	ok(35, $value eq 'value' );
a0d0e21e	253
	254	# Attempting to delete an existing key should work
	255
	256	$status = $X->del('q') ;
f6b705ef	257	ok(36, $status == 0 );
a0d0e21e	258
a0d0e21e	259	# Make sure that the key deleted, cannot be retrieved
3245f058	260	{
	261	no warnings 'uninitialized' ;
	262	ok(37, $h{'q'} eq undef );
	263	}
a0d0e21e	264
	265	# Attempting to delete a non-existant key should fail
	266
	267	$status = $X->del('joe') ;
f6b705ef	268	ok(38, $status == 1 );
a0d0e21e	269
	270	# Check the get interface
	271
	272	# First a non-existing key
	273	$status = $X->get('aaaa', $value) ;
f6b705ef	274	ok(39, $status == 1 );
a0d0e21e	275
	276	# Next an existing key
	277	$status = $X->get('a', $value) ;
f6b705ef	278	ok(40, $status == 0 );
f6b705ef	279	ok(41, $value eq 'A' );
a0d0e21e	280
	281	# seq
	282	# ###
	283
	284	# ditto, but use put to replace the key/value pair.
	285
	286	# use seq to walk backwards through a file - check that this reversed is
	287
	288	# check seq FIRST/LAST
	289
	290	# sync
	291	# ####
	292
	293	$status = $X->sync ;
f6b705ef	294	ok(42, $status == 0 );
a0d0e21e	295
	296
	297	# fd
	298	# ##
	299
	300	$status = $X->fd ;
f6b705ef	301	ok(43, $status != 0 );
a0d0e21e	302
	303	undef $X ;
	304	untie %h ;
	305
	306	unlink $Dfile;
	307
f6b705ef	308	# clear
	309	# #####
	310
	311	ok(44, tie(%h, 'DB_File', $Dfile, O_RDWR\|O_CREAT, 0640, $DB_HASH ) );
	312	foreach (1 .. 10)
	313	{ $h{$_} = $_ * 100 }
	314
	315	# check that there are 10 elements in the hash
	316	$i = 0 ;
	317	while (($key,$value) = each(%h)) {
	318	$i++;
	319	}
	320	ok(45, $i == 10);
	321
	322	# now clear the hash
	323	%h = () ;
	324
	325	# check it is empty
	326	$i = 0 ;
	327	while (($key,$value) = each(%h)) {
	328	$i++;
	329	}
	330	ok(46, $i == 0);
	331
	332	untie %h ;
	333	unlink $Dfile ;
	334
	335
a0d0e21e	336	# Now try an in memory file
f6b705ef	337	ok(47, $X = tie(%h, 'DB_File',undef, O_RDWR\|O_CREAT, 0640, $DB_HASH ) );
a0d0e21e	338
	339	# fd with an in memory file should return fail
	340	$status = $X->fd ;
f6b705ef	341	ok(48, $status == -1 );
a0d0e21e	342
a0d0e21e	343	undef $X ;
610ab055	344	untie %h ;
	345
	346	{
	347	# check ability to override the default hashing
	348	my %x ;
	349	my $filename = "xyz" ;
	350	my $hi = new DB_File::HASHINFO ;
	351	$::count = 0 ;
	352	$hi->{hash} = sub { ++$::count ; length $_[0] } ;
	353	ok(49, tie %x, 'DB_File', $filename, O_RDWR\|O_CREAT, 0640, $hi ) ;
	354	$h{"abc"} = 123 ;
	355	ok(50, $h{"abc"} == 123) ;
	356	untie %x ;
	357	unlink $filename ;
	358	ok(51, $::count >0) ;
	359	}
a0d0e21e	360
05475680	361	{
	362	# check that attempting to tie an array to a DB_HASH will fail
	363
	364	my $filename = "xyz" ;
	365	my @x ;
	366	eval { tie @x, 'DB_File', $filename, O_RDWR\|O_CREAT, 0640, $DB_HASH ; } ;
	367	ok(52, $@ =~ /^DB_File can only tie an associative array to a DB_HASH database/) ;
	368	unlink $filename ;
	369	}
	370
a6ed719b	371	{
	372	# sub-class test
	373
	374	package Another ;
	375
3245f058	376	use warnings ;
a6ed719b	377	use strict ;
	378
	379	open(FILE, ">SubDB.pm") or die "Cannot open SubDB.pm: $!\n" ;
	380	print FILE <<'EOM' ;
	381
	382	package SubDB ;
	383
3245f058	384	use warnings ;
a6ed719b	385	use strict ;
	386	use vars qw( @ISA @EXPORT) ;
	387
	388	require Exporter ;
	389	use DB_File;
	390	@ISA=qw(DB_File);
	391	@EXPORT = @DB_File::EXPORT ;
	392
	393	sub STORE {
	394	my $self = shift ;
	395	my $key = shift ;
	396	my $value = shift ;
	397	$self->SUPER::STORE($key, $value * 2) ;
	398	}
	399
	400	sub FETCH {
	401	my $self = shift ;
	402	my $key = shift ;
	403	$self->SUPER::FETCH($key) - 1 ;
	404	}
	405
	406	sub put {
	407	my $self = shift ;
	408	my $key = shift ;
	409	my $value = shift ;
	410	$self->SUPER::put($key, $value * 3) ;
	411	}
	412
	413	sub get {
	414	my $self = shift ;
	415	$self->SUPER::get($_[0], $_[1]) ;
	416	$_[1] -= 2 ;
	417	}
	418
	419	sub A_new_method
	420	{
	421	my $self = shift ;
	422	my $key = shift ;
	423	my $value = $self->FETCH($key) ;
	424	return "[[$value]]" ;
	425	}
	426
	427	1 ;
	428	EOM
	429
	430	close FILE ;
	431
a9fd575d	432	BEGIN { push @INC, '.'; }
a6ed719b	433	eval 'use SubDB ; ';
	434	main::ok(53, $@ eq "") ;
	435	my %h ;
	436	my $X ;
	437	eval '
	438	$X = tie(%h, "SubDB","dbhash.tmp", O_RDWR\|O_CREAT, 0640, $DB_HASH );
	439	' ;
	440
	441	main::ok(54, $@ eq "") ;
	442
	443	my $ret = eval '$h{"fred"} = 3 ; return $h{"fred"} ' ;
	444	main::ok(55, $@ eq "") ;
	445	main::ok(56, $ret == 5) ;
	446
	447	my $value = 0;
	448	$ret = eval '$X->put("joe", 4) ; $X->get("joe", $value) ; return $value' ;
	449	main::ok(57, $@ eq "") ;
	450	main::ok(58, $ret == 10) ;
	451
	452	$ret = eval ' R_NEXT eq main::R_NEXT ' ;
	453	main::ok(59, $@ eq "" ) ;
	454	main::ok(60, $ret == 1) ;
	455
	456	$ret = eval '$X->A_new_method("joe") ' ;
	457	main::ok(61, $@ eq "") ;
	458	main::ok(62, $ret eq "[[11]]") ;
	459
fac76ed7	460	undef $X;
fac76ed7	461	untie(%h);
a6ed719b	462	unlink "SubDB.pm", "dbhash.tmp" ;
	463
	464	}
9fe6733a	465
	466	{
	467	# DBM Filter tests
3245f058	468	use warnings ;
9fe6733a	469	use strict ;
	470	my (%h, $db) ;
	471	my ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	472	unlink $Dfile;
	473
	474	sub checkOutput
	475	{
	476	my($fk, $sk, $fv, $sv) = @_ ;
	477	return
	478	$fetch_key eq $fk && $store_key eq $sk &&
	479	$fetch_value eq $fv && $store_value eq $sv &&
	480	$_ eq 'original' ;
	481	}
	482
	483	ok(63, $db = tie(%h, 'DB_File', $Dfile, O_RDWR\|O_CREAT, 0640, $DB_HASH ) );
	484
	485	$db->filter_fetch_key (sub { $fetch_key = $_ }) ;
	486	$db->filter_store_key (sub { $store_key = $_ }) ;
	487	$db->filter_fetch_value (sub { $fetch_value = $_}) ;
	488	$db->filter_store_value (sub { $store_value = $_ }) ;
	489
	490	$_ = "original" ;
	491
	492	$h{"fred"} = "joe" ;
	493	# fk sk fv sv
	494	ok(64, checkOutput( "", "fred", "", "joe")) ;
	495
	496	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	497	ok(65, $h{"fred"} eq "joe");
	498	# fk sk fv sv
	499	ok(66, checkOutput( "", "fred", "joe", "")) ;
	500
	501	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	502	ok(67, $db->FIRSTKEY() eq "fred") ;
	503	# fk sk fv sv
	504	ok(68, checkOutput( "fred", "", "", "")) ;
	505
	506	# replace the filters, but remember the previous set
	507	my ($old_fk) = $db->filter_fetch_key
	508	(sub { $_ = uc $_ ; $fetch_key = $_ }) ;
	509	my ($old_sk) = $db->filter_store_key
	510	(sub { $_ = lc $_ ; $store_key = $_ }) ;
	511	my ($old_fv) = $db->filter_fetch_value
	512	(sub { $_ = "[$_]"; $fetch_value = $_ }) ;
	513	my ($old_sv) = $db->filter_store_value
	514	(sub { s/o/x/g; $store_value = $_ }) ;
	515
	516	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	517	$h{"Fred"} = "Joe" ;
	518	# fk sk fv sv
	519	ok(69, checkOutput( "", "fred", "", "Jxe")) ;
	520
	521	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	522	ok(70, $h{"Fred"} eq "[Jxe]");
	523	# fk sk fv sv
	524	ok(71, checkOutput( "", "fred", "[Jxe]", "")) ;
	525
	526	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	527	ok(72, $db->FIRSTKEY() eq "FRED") ;
	528	# fk sk fv sv
	529	ok(73, checkOutput( "FRED", "", "", "")) ;
	530
	531	# put the original filters back
	532	$db->filter_fetch_key ($old_fk);
533	$db->filter_store_key ($old_sk);
534	$db->filter_fetch_value ($old_fv);
535	$db->filter_store_value ($old_sv);
536
537	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
538	$h{"fred"} = "joe" ;
539	ok(74, checkOutput( "", "fred", "", "joe")) ;
540
541	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
542	ok(75, $h{"fred"} eq "joe");
543	ok(76, checkOutput( "", "fred", "joe", "")) ;
544
545	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
546	ok(77, $db->FIRSTKEY() eq "fred") ;
547	ok(78, checkOutput( "fred", "", "", "")) ;
548
549	# delete the filters
550	$db->filter_fetch_key (undef);
551	$db->filter_store_key (undef);
552	$db->filter_fetch_value (undef);
553	$db->filter_store_value (undef);
554
555	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
556	$h{"fred"} = "joe" ;
557	ok(79, checkOutput( "", "", "", "")) ;
558
559	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
560	ok(80, $h{"fred"} eq "joe");
561	ok(81, checkOutput( "", "", "", "")) ;
562
563	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
564	ok(82, $db->FIRSTKEY() eq "fred") ;
565	ok(83, checkOutput( "", "", "", "")) ;
566
567	undef $db ;
568	untie %h;
569	unlink $Dfile;
570	}
571
572	{
573	# DBM Filter with a closure
574
3245f058	575	use warnings ;
9fe6733a	576	use strict ;
	577	my (%h, $db) ;
	578
	579	unlink $Dfile;
	580	ok(84, $db = tie(%h, 'DB_File', $Dfile, O_RDWR\|O_CREAT, 0640, $DB_HASH ) );
	581
	582	my %result = () ;
	583
	584	sub Closure
	585	{
	586	my ($name) = @_ ;
	587	my $count = 0 ;
	588	my @kept = () ;
	589
	590	return sub { ++$count ;
	591	push @kept, $_ ;
	592	$result{$name} = "$name - $count: [@kept]" ;
	593	}
	594	}
	595
	596	$db->filter_store_key(Closure("store key")) ;
	597	$db->filter_store_value(Closure("store value")) ;
	598	$db->filter_fetch_key(Closure("fetch key")) ;
	599	$db->filter_fetch_value(Closure("fetch value")) ;
	600
	601	$_ = "original" ;
	602
	603	$h{"fred"} = "joe" ;
	604	ok(85, $result{"store key"} eq "store key - 1: [fred]");
	605	ok(86, $result{"store value"} eq "store value - 1: [joe]");
	606	ok(87, ! defined $result{"fetch key"} );
	607	ok(88, ! defined $result{"fetch value"} );
	608	ok(89, $_ eq "original") ;
	609
	610	ok(90, $db->FIRSTKEY() eq "fred") ;
	611	ok(91, $result{"store key"} eq "store key - 1: [fred]");
	612	ok(92, $result{"store value"} eq "store value - 1: [joe]");
	613	ok(93, $result{"fetch key"} eq "fetch key - 1: [fred]");
	614	ok(94, ! defined $result{"fetch value"} );
	615	ok(95, $_ eq "original") ;
	616
	617	$h{"jim"} = "john" ;
	618	ok(96, $result{"store key"} eq "store key - 2: [fred jim]");
	619	ok(97, $result{"store value"} eq "store value - 2: [joe john]");
	620	ok(98, $result{"fetch key"} eq "fetch key - 1: [fred]");
	621	ok(99, ! defined $result{"fetch value"} );
	622	ok(100, $_ eq "original") ;
	623
	624	ok(101, $h{"fred"} eq "joe");
	625	ok(102, $result{"store key"} eq "store key - 3: [fred jim fred]");
	626	ok(103, $result{"store value"} eq "store value - 2: [joe john]");
	627	ok(104, $result{"fetch key"} eq "fetch key - 1: [fred]");
	628	ok(105, $result{"fetch value"} eq "fetch value - 1: [joe]");
	629	ok(106, $_ eq "original") ;
	630
	631	undef $db ;
	632	untie %h;
	633	unlink $Dfile;
	634	}
	635
	636	{
	637	# DBM Filter recursion detection
3245f058	638	use warnings ;
9fe6733a	639	use strict ;
	640	my (%h, $db) ;
	641	unlink $Dfile;
	642
	643	ok(107, $db = tie(%h, 'DB_File', $Dfile, O_RDWR\|O_CREAT, 0640, $DB_HASH ) );
	644
	645	$db->filter_store_key (sub { $_ = $h{$_} }) ;
	646
	647	eval '$h{1} = 1234' ;
	648	ok(108, $@ =~ /^recursion detected in filter_store_key at/ );
	649
	650	undef $db ;
	651	untie %h;
	652	unlink $Dfile;
	653	}
	654
2c2d71f5	655
	656	{
	657	# Examples from the POD
	658
	659	my $file = "xyzt" ;
	660	{
	661	my $redirect = new Redirect $file ;
	662
3245f058	663	use warnings FATAL => qw(all);
2c2d71f5	664	use strict ;
	665	use DB_File ;
	666	use vars qw( %h $k $v ) ;
	667
	668	unlink "fruit" ;
	669	tie %h, "DB_File", "fruit", O_RDWR\|O_CREAT, 0640, $DB_HASH
	670	or die "Cannot open file 'fruit': $!\n";
	671
	672	# Add a few key/value pairs to the file
	673	$h{"apple"} = "red" ;
	674	$h{"orange"} = "orange" ;
	675	$h{"banana"} = "yellow" ;
	676	$h{"tomato"} = "red" ;
	677
	678	# Check for existence of a key
	679	print "Banana Exists\n\n" if $h{"banana"} ;
	680
	681	# Delete a key/value pair.
	682	delete $h{"apple"} ;
	683
	684	# print the contents of the file
	685	while (($k, $v) = each %h)
	686	{ print "$k -> $v\n" }
	687
	688	untie %h ;
	689
	690	unlink "fruit" ;
	691	}
	692
	693	ok(109, docat_del($file) eq <<'EOM') ;
	694	Banana Exists
	695
	696	orange -> orange
	697	tomato -> red
	698	banana -> yellow
	699	EOM
	700
	701	}
	702
cbc5248d	703	{
	704	# Bug ID 20001013.009
	705	#
	706	# test that $hash{KEY} = undef doesn't produce the warning
	707	# Use of uninitialized value in null operation
	708	use warnings ;
	709	use strict ;
	710	use DB_File ;
	711
	712	unlink $Dfile;
	713	my %h ;
	714	my $a = "";
	715	local $SIG{__WARN__} = sub {$a = $_[0]} ;
	716
	717	tie %h, 'DB_File', $Dfile or die "Can't open file: $!\n" ;
	718	$h{ABC} = undef;
	719	ok(110, $a eq "") ;
3245f058	720	untie %h ;
	721	unlink $Dfile;
	722	}
	723
	724	{
	725	# test that %hash = () doesn't produce the warning
	726	# Argument "" isn't numeric in entersub
	727	use warnings ;
	728	use strict ;
	729	use DB_File ;
	730
	731	unlink $Dfile;
	732	my %h ;
	733	my $a = "";
	734	local $SIG{__WARN__} = sub {$a = $_[0]} ;
	735
	736	tie %h, 'DB_File', $Dfile or die "Can't open file: $!\n" ;
	737	%h = (); ;
	738	ok(111, $a eq "") ;
	739	untie %h ;
cbc5248d	740	unlink $Dfile;
	741	}
	742
a0d0e21e	743	exit ;