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

#!./perl -w

BEGIN {
    chdir 't' if -d 't';
    @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..117\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' || $^O eq 'MacOS') ? 0666 : 0640) ||
   $^O eq 'amigaos' || $^O eq 'MSWin32' || $^O eq 'cygwin' || $^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;
}

{
    # When iterating over a tied hash using "each", the key passed to FETCH
    # will be recycled and passed to NEXTKEY. If a Source Filter modifies the
    # key in FETCH via a filter_fetch_key method we need to check that the
    # modified key doesn't get passed to NEXTKEY.
    # Also Test "keys" & "values" while we are at it.

    use warnings ;
    use strict ;
    use DB_File ;

    unlink $Dfile;
    my $bad_key = 0 ;
    my %h = () ;
    my $db ;
    ok(112, $db = tie(%h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $DB_HASH ) );
    $db->filter_fetch_key (sub { $_ =~ s/^Beta_/Alpha_/ if defined $_}) ;
    $db->filter_store_key (sub { $bad_key = 1 if /^Beta_/ ; $_ =~ s/^Alpha_/Beta_/}) ;

    $h{'Alpha_ABC'} = 2 ;
    $h{'Alpha_DEF'} = 5 ;

    ok(113, $h{'Alpha_ABC'} == 2);
    ok(114, $h{'Alpha_DEF'} == 5);

    my ($k, $v) = ("","");
    while (($k, $v) = each %h) {}
    ok(115, $bad_key == 0);

    $bad_key = 0 ;
    foreach $k (keys %h) {}
    ok(116, $bad_key == 0);

    $bad_key = 0 ;
    foreach $v (values %h) {}
    ok(117, $bad_key == 0);

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

exit ;
Commit	Line	Data
7c250e57	1	#!./perl -w
a0d0e21e	2
a0d0e21e	3	BEGIN {
88587957	4	chdir 't' if -d 't';
20822f61	5	@INC = '../lib';
a0d0e21e	6	require Config; import Config;
a0d0e21e	7	if ($Config{'extensions'} !~ /\bDB_File\b/) {
45c0de28	8	print "1..0 # Skip: DB_File was not built\n";
a0d0e21e	9	exit 0;
	10	}
	11	}
	12
3245f058	13	use strict;
3245f058	14	use warnings;
a0d0e21e	15	use DB_File;
	16	use Fcntl;
	17
0bf2e707	18	print "1..117\n";
f6b705ef	19
	20	sub ok
	21	{
	22	my $no = shift ;
	23	my $result = shift ;
	24
	25	print "not " unless $result ;
	26	print "ok $no\n" ;
	27	}
a0d0e21e	28
2c2d71f5	29	{
	30	package Redirect ;
	31	use Symbol ;
	32
	33	sub new
	34	{
	35	my $class = shift ;
	36	my $filename = shift ;
	37	my $fh = gensym ;
	38	open ($fh, ">$filename") \|\| die "Cannot open $filename: $!" ;
	39	my $real_stdout = select($fh) ;
	40	return bless [$fh, $real_stdout ] ;
	41
	42	}
	43	sub DESTROY
	44	{
	45	my $self = shift ;
	46	close $self->[0] ;
	47	select($self->[1]) ;
	48	}
	49	}
	50
	51	sub docat_del
	52	{
	53	my $file = shift;
	54	local $/ = undef;
	55	open(CAT,$file) \|\| die "Cannot open $file: $!";
	56	my $result = <CAT>;
	57	close(CAT);
	58	unlink $file ;
	59	return $result;
	60	}
	61
9fe6733a	62	my $Dfile = "dbhash.tmp";
3245f058	63	my $null_keys_allowed = ($DB_File::db_ver < 2.004010
	64	\|\| $DB_File::db_ver >= 3.1 );
	65
a0d0e21e	66	unlink $Dfile;
	67
	68	umask(0);
	69
	70	# Check the interface to HASHINFO
	71
f6b705ef	72	my $dbh = new DB_File::HASHINFO ;
f6b705ef	73
3fe9a6f1	74	ok(1, ! defined $dbh->{bsize}) ;
	75	ok(2, ! defined $dbh->{ffactor}) ;
	76	ok(3, ! defined $dbh->{nelem}) ;
	77	ok(4, ! defined $dbh->{cachesize}) ;
	78	ok(5, ! defined $dbh->{hash}) ;
	79	ok(6, ! defined $dbh->{lorder}) ;
a0d0e21e	80
a0d0e21e	81	$dbh->{bsize} = 3000 ;
f6b705ef	82	ok(7, $dbh->{bsize} == 3000 );
a0d0e21e	83
a0d0e21e	84	$dbh->{ffactor} = 9000 ;
f6b705ef	85	ok(8, $dbh->{ffactor} == 9000 );
f6b705ef	86
a0d0e21e	87	$dbh->{nelem} = 400 ;
f6b705ef	88	ok(9, $dbh->{nelem} == 400 );
a0d0e21e	89
a0d0e21e	90	$dbh->{cachesize} = 65 ;
f6b705ef	91	ok(10, $dbh->{cachesize} == 65 );
a0d0e21e	92
a0d0e21e	93	$dbh->{hash} = "abc" ;
f6b705ef	94	ok(11, $dbh->{hash} eq "abc" );
a0d0e21e	95
a0d0e21e	96	$dbh->{lorder} = 1234 ;
f6b705ef	97	ok(12, $dbh->{lorder} == 1234 );
a0d0e21e	98
	99	# Check that an invalid entry is caught both for store & fetch
	100	eval '$dbh->{fred} = 1234' ;
f6b705ef	101	ok(13, $@ =~ /^DB_File::HASHINFO::STORE - Unknown element 'fred' at/ );
610ab055	102	eval 'my $q = $dbh->{fred}' ;
f6b705ef	103	ok(14, $@ =~ /^DB_File::HASHINFO::FETCH - Unknown element 'fred' at/ );
a0d0e21e	104
610ab055	105
a0d0e21e	106	# Now check the interface to HASH
3245f058	107	my ($X, %h);
f6b705ef	108	ok(15, $X = tie(%h, 'DB_File',$Dfile, O_RDWR\|O_CREAT, 0640, $DB_HASH ) );
a0d0e21e	109
3245f058	110	my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
a0d0e21e	111	$blksize,$blocks) = stat($Dfile);
d536870a	112	ok(16, ($mode & 0777) == (($^O eq 'os2' \|\| $^O eq 'MacOS') ? 0666 : 0640) \|\|
13d11c6e	113	$^O eq 'amigaos' \|\| $^O eq 'MSWin32' \|\| $^O eq 'cygwin' \|\| $^O eq 'NetWare');
a0d0e21e	114
3245f058	115	my ($key, $value, $i);
a0d0e21e	116	while (($key,$value) = each(%h)) {
	117	$i++;
	118	}
f6b705ef	119	ok(17, !$i );
a0d0e21e	120
	121	$h{'goner1'} = 'snork';
	122
	123	$h{'abc'} = 'ABC';
f6b705ef	124	ok(18, $h{'abc'} eq 'ABC' );
	125	ok(19, !defined $h{'jimmy'} );
	126	ok(20, !exists $h{'jimmy'} );
	127	ok(21, exists $h{'abc'} );
a0d0e21e	128
	129	$h{'def'} = 'DEF';
	130	$h{'jkl','mno'} = "JKL\034MNO";
	131	$h{'a',2,3,4,5} = join("\034",'A',2,3,4,5);
	132	$h{'a'} = 'A';
	133
	134	#$h{'b'} = 'B';
	135	$X->STORE('b', 'B') ;
	136
	137	$h{'c'} = 'C';
	138
	139	#$h{'d'} = 'D';
	140	$X->put('d', 'D') ;
	141
	142	$h{'e'} = 'E';
	143	$h{'f'} = 'F';
	144	$h{'g'} = 'X';
	145	$h{'h'} = 'H';
	146	$h{'i'} = 'I';
	147
	148	$h{'goner2'} = 'snork';
	149	delete $h{'goner2'};
	150
	151
	152	# IMPORTANT - $X must be undefined before the untie otherwise the
	153	# underlying DB close routine will not get called.
	154	undef $X ;
	155	untie(%h);
	156
	157
	158	# tie to the same file again, do not supply a type - should default to HASH
f6b705ef	159	ok(22, $X = tie(%h,'DB_File',$Dfile, O_RDWR, 0640) );
a0d0e21e	160
	161	# Modify an entry from the previous tie
	162	$h{'g'} = 'G';
	163
	164	$h{'j'} = 'J';
	165	$h{'k'} = 'K';
	166	$h{'l'} = 'L';
	167	$h{'m'} = 'M';
	168	$h{'n'} = 'N';
	169	$h{'o'} = 'O';
	170	$h{'p'} = 'P';
	171	$h{'q'} = 'Q';
	172	$h{'r'} = 'R';
	173	$h{'s'} = 'S';
	174	$h{'t'} = 'T';
	175	$h{'u'} = 'U';
	176	$h{'v'} = 'V';
	177	$h{'w'} = 'W';
	178	$h{'x'} = 'X';
	179	$h{'y'} = 'Y';
	180	$h{'z'} = 'Z';
	181
	182	$h{'goner3'} = 'snork';
	183
	184	delete $h{'goner1'};
	185	$X->DELETE('goner3');
	186
3245f058	187	my @keys = keys(%h);
3245f058	188	my @values = values(%h);
a0d0e21e	189
f6b705ef	190	ok(23, $#keys == 29 && $#values == 29) ;
a0d0e21e	191
f6b705ef	192	$i = 0 ;
55d68b4a	193	while (($key,$value) = each(%h)) {
2f52a358	194	if ($key eq $keys[$i] && $value eq $values[$i] && $key eq lc($value)) {
a0d0e21e	195	$key =~ y/a-z/A-Z/;
	196	$i++ if $key eq $value;
	197	}
	198	}
	199
f6b705ef	200	ok(24, $i == 30) ;
a0d0e21e	201
55d68b4a	202	@keys = ('blurfl', keys(%h), 'dyick');
f6b705ef	203	ok(25, $#keys == 31) ;
a0d0e21e	204
a0d0e21e	205	$h{'foo'} = '';
f6b705ef	206	ok(26, $h{'foo'} eq '' );
a0d0e21e	207
3245f058	208	# Berkeley DB from version 2.4.10 to 3.0 does not allow null keys.
	209	# This feature was reenabled in version 3.1 of Berkeley DB.
	210	my $result = 0 ;
	211	if ($null_keys_allowed) {
	212	$h{''} = 'bar';
	213	$result = ( $h{''} eq 'bar' );
	214	}
	215	else
	216	{ $result = 1 }
	217	ok(27, $result) ;
a0d0e21e	218
a0d0e21e	219	# check cache overflow and numeric keys and contents
3245f058	220	my $ok = 1;
a0d0e21e	221	for ($i = 1; $i < 200; $i++) { $h{$i + 0} = $i + 0; }
a0d0e21e	222	for ($i = 1; $i < 200; $i++) { $ok = 0 unless $h{$i} == $i; }
f6b705ef	223	ok(28, $ok );
a0d0e21e	224
	225	($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
	226	$blksize,$blocks) = stat($Dfile);
f6b705ef	227	ok(29, $size > 0 );
a0d0e21e	228
a0d0e21e	229	@h{0..200} = 200..400;
3245f058	230	my @foo = @h{0..200};
f6b705ef	231	ok(30, join(':',200..400) eq join(':',@foo) );
a0d0e21e	232
	233
	234	# Now check all the non-tie specific stuff
	235
	236	# Check NOOVERWRITE will make put fail when attempting to overwrite
	237	# an existing record.
	238
3245f058	239	my $status = $X->put( 'x', 'newvalue', R_NOOVERWRITE) ;
f6b705ef	240	ok(31, $status == 1 );
a0d0e21e	241
	242	# check that the value of the key 'x' has not been changed by the
	243	# previous test
f6b705ef	244	ok(32, $h{'x'} eq 'X' );
a0d0e21e	245
	246	# standard put
	247	$status = $X->put('key', 'value') ;
f6b705ef	248	ok(33, $status == 0 );
a0d0e21e	249
a0d0e21e	250	#check that previous put can be retrieved
f6b705ef	251	$value = 0 ;
a0d0e21e	252	$status = $X->get('key', $value) ;
f6b705ef	253	ok(34, $status == 0 );
f6b705ef	254	ok(35, $value eq 'value' );
a0d0e21e	255
	256	# Attempting to delete an existing key should work
	257
	258	$status = $X->del('q') ;
f6b705ef	259	ok(36, $status == 0 );
a0d0e21e	260
a0d0e21e	261	# Make sure that the key deleted, cannot be retrieved
3245f058	262	{
	263	no warnings 'uninitialized' ;
	264	ok(37, $h{'q'} eq undef );
	265	}
a0d0e21e	266
	267	# Attempting to delete a non-existant key should fail
	268
	269	$status = $X->del('joe') ;
f6b705ef	270	ok(38, $status == 1 );
a0d0e21e	271
	272	# Check the get interface
	273
	274	# First a non-existing key
	275	$status = $X->get('aaaa', $value) ;
f6b705ef	276	ok(39, $status == 1 );
a0d0e21e	277
	278	# Next an existing key
	279	$status = $X->get('a', $value) ;
f6b705ef	280	ok(40, $status == 0 );
f6b705ef	281	ok(41, $value eq 'A' );
a0d0e21e	282
	283	# seq
	284	# ###
	285
	286	# ditto, but use put to replace the key/value pair.
	287
	288	# use seq to walk backwards through a file - check that this reversed is
	289
	290	# check seq FIRST/LAST
	291
	292	# sync
	293	# ####
	294
	295	$status = $X->sync ;
f6b705ef	296	ok(42, $status == 0 );
a0d0e21e	297
	298
	299	# fd
	300	# ##
	301
	302	$status = $X->fd ;
f6b705ef	303	ok(43, $status != 0 );
a0d0e21e	304
	305	undef $X ;
	306	untie %h ;
	307
	308	unlink $Dfile;
	309
f6b705ef	310	# clear
	311	# #####
	312
	313	ok(44, tie(%h, 'DB_File', $Dfile, O_RDWR\|O_CREAT, 0640, $DB_HASH ) );
	314	foreach (1 .. 10)
	315	{ $h{$_} = $_ * 100 }
	316
	317	# check that there are 10 elements in the hash
	318	$i = 0 ;
	319	while (($key,$value) = each(%h)) {
	320	$i++;
	321	}
	322	ok(45, $i == 10);
	323
	324	# now clear the hash
	325	%h = () ;
	326
	327	# check it is empty
	328	$i = 0 ;
	329	while (($key,$value) = each(%h)) {
	330	$i++;
	331	}
	332	ok(46, $i == 0);
	333
	334	untie %h ;
	335	unlink $Dfile ;
	336
	337
a0d0e21e	338	# Now try an in memory file
f6b705ef	339	ok(47, $X = tie(%h, 'DB_File',undef, O_RDWR\|O_CREAT, 0640, $DB_HASH ) );
a0d0e21e	340
	341	# fd with an in memory file should return fail
	342	$status = $X->fd ;
f6b705ef	343	ok(48, $status == -1 );
a0d0e21e	344
a0d0e21e	345	undef $X ;
610ab055	346	untie %h ;
	347
	348	{
	349	# check ability to override the default hashing
	350	my %x ;
	351	my $filename = "xyz" ;
	352	my $hi = new DB_File::HASHINFO ;
	353	$::count = 0 ;
	354	$hi->{hash} = sub { ++$::count ; length $_[0] } ;
	355	ok(49, tie %x, 'DB_File', $filename, O_RDWR\|O_CREAT, 0640, $hi ) ;
	356	$h{"abc"} = 123 ;
	357	ok(50, $h{"abc"} == 123) ;
	358	untie %x ;
	359	unlink $filename ;
	360	ok(51, $::count >0) ;
	361	}
a0d0e21e	362
05475680	363	{
	364	# check that attempting to tie an array to a DB_HASH will fail
	365
	366	my $filename = "xyz" ;
	367	my @x ;
	368	eval { tie @x, 'DB_File', $filename, O_RDWR\|O_CREAT, 0640, $DB_HASH ; } ;
	369	ok(52, $@ =~ /^DB_File can only tie an associative array to a DB_HASH database/) ;
	370	unlink $filename ;
	371	}
	372
a6ed719b	373	{
	374	# sub-class test
	375
	376	package Another ;
	377
3245f058	378	use warnings ;
a6ed719b	379	use strict ;
	380
	381	open(FILE, ">SubDB.pm") or die "Cannot open SubDB.pm: $!\n" ;
	382	print FILE <<'EOM' ;
	383
	384	package SubDB ;
	385
3245f058	386	use warnings ;
a6ed719b	387	use strict ;
	388	use vars qw( @ISA @EXPORT) ;
	389
	390	require Exporter ;
	391	use DB_File;
	392	@ISA=qw(DB_File);
	393	@EXPORT = @DB_File::EXPORT ;
	394
	395	sub STORE {
	396	my $self = shift ;
	397	my $key = shift ;
	398	my $value = shift ;
	399	$self->SUPER::STORE($key, $value * 2) ;
	400	}
	401
	402	sub FETCH {
	403	my $self = shift ;
	404	my $key = shift ;
	405	$self->SUPER::FETCH($key) - 1 ;
	406	}
	407
	408	sub put {
	409	my $self = shift ;
	410	my $key = shift ;
	411	my $value = shift ;
	412	$self->SUPER::put($key, $value * 3) ;
	413	}
	414
	415	sub get {
	416	my $self = shift ;
	417	$self->SUPER::get($_[0], $_[1]) ;
	418	$_[1] -= 2 ;
	419	}
	420
	421	sub A_new_method
	422	{
	423	my $self = shift ;
	424	my $key = shift ;
	425	my $value = $self->FETCH($key) ;
	426	return "[[$value]]" ;
	427	}
	428
	429	1 ;
	430	EOM
	431
	432	close FILE ;
	433
a9fd575d	434	BEGIN { push @INC, '.'; }
a6ed719b	435	eval 'use SubDB ; ';
	436	main::ok(53, $@ eq "") ;
	437	my %h ;
	438	my $X ;
	439	eval '
	440	$X = tie(%h, "SubDB","dbhash.tmp", O_RDWR\|O_CREAT, 0640, $DB_HASH );
	441	' ;
	442
	443	main::ok(54, $@ eq "") ;
	444
	445	my $ret = eval '$h{"fred"} = 3 ; return $h{"fred"} ' ;
	446	main::ok(55, $@ eq "") ;
	447	main::ok(56, $ret == 5) ;
	448
	449	my $value = 0;
	450	$ret = eval '$X->put("joe", 4) ; $X->get("joe", $value) ; return $value' ;
	451	main::ok(57, $@ eq "") ;
	452	main::ok(58, $ret == 10) ;
	453
	454	$ret = eval ' R_NEXT eq main::R_NEXT ' ;
	455	main::ok(59, $@ eq "" ) ;
	456	main::ok(60, $ret == 1) ;
	457
	458	$ret = eval '$X->A_new_method("joe") ' ;
	459	main::ok(61, $@ eq "") ;
	460	main::ok(62, $ret eq "[[11]]") ;
	461
fac76ed7	462	undef $X;
fac76ed7	463	untie(%h);
a6ed719b	464	unlink "SubDB.pm", "dbhash.tmp" ;
	465
	466	}
9fe6733a	467
	468	{
	469	# DBM Filter tests
3245f058	470	use warnings ;
9fe6733a	471	use strict ;
	472	my (%h, $db) ;
	473	my ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	474	unlink $Dfile;
	475
	476	sub checkOutput
	477	{
	478	my($fk, $sk, $fv, $sv) = @_ ;
	479	return
	480	$fetch_key eq $fk && $store_key eq $sk &&
	481	$fetch_value eq $fv && $store_value eq $sv &&
	482	$_ eq 'original' ;
	483	}
	484
	485	ok(63, $db = tie(%h, 'DB_File', $Dfile, O_RDWR\|O_CREAT, 0640, $DB_HASH ) );
	486
	487	$db->filter_fetch_key (sub { $fetch_key = $_ }) ;
	488	$db->filter_store_key (sub { $store_key = $_ }) ;
	489	$db->filter_fetch_value (sub { $fetch_value = $_}) ;
	490	$db->filter_store_value (sub { $store_value = $_ }) ;
	491
	492	$_ = "original" ;
	493
	494	$h{"fred"} = "joe" ;
	495	# fk sk fv sv
	496	ok(64, checkOutput( "", "fred", "", "joe")) ;
	497
	498	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	499	ok(65, $h{"fred"} eq "joe");
	500	# fk sk fv sv
	501	ok(66, checkOutput( "", "fred", "joe", "")) ;
	502
	503	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	504	ok(67, $db->FIRSTKEY() eq "fred") ;
	505	# fk sk fv sv
	506	ok(68, checkOutput( "fred", "", "", "")) ;
	507
	508	# replace the filters, but remember the previous set
	509	my ($old_fk) = $db->filter_fetch_key
	510	(sub { $_ = uc $_ ; $fetch_key = $_ }) ;
	511	my ($old_sk) = $db->filter_store_key
	512	(sub { $_ = lc $_ ; $store_key = $_ }) ;
	513	my ($old_fv) = $db->filter_fetch_value
	514	(sub { $_ = "[$_]"; $fetch_value = $_ }) ;
	515	my ($old_sv) = $db->filter_store_value
	516	(sub { s/o/x/g; $store_value = $_ }) ;
	517
	518	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	519	$h{"Fred"} = "Joe" ;
	520	# fk sk fv sv
	521	ok(69, checkOutput( "", "fred", "", "Jxe")) ;
	522
	523	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	524	ok(70, $h{"Fred"} eq "[Jxe]");
	525	# fk sk fv sv
	526	ok(71, checkOutput( "", "fred", "[Jxe]", "")) ;
	527
	528	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	529	ok(72, $db->FIRSTKEY() eq "FRED") ;
	530	# fk sk fv sv
	531	ok(73, checkOutput( "FRED", "", "", "")) ;
	532
	533	# put the original filters back
	534	$db->filter_fetch_key ($old_fk);
535	$db->filter_store_key ($old_sk);
536	$db->filter_fetch_value ($old_fv);
537	$db->filter_store_value ($old_sv);
538
539	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
540	$h{"fred"} = "joe" ;
541	ok(74, checkOutput( "", "fred", "", "joe")) ;
542
543	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
544	ok(75, $h{"fred"} eq "joe");
545	ok(76, checkOutput( "", "fred", "joe", "")) ;
546
547	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
548	ok(77, $db->FIRSTKEY() eq "fred") ;
549	ok(78, checkOutput( "fred", "", "", "")) ;
550
551	# delete the filters
552	$db->filter_fetch_key (undef);
553	$db->filter_store_key (undef);
554	$db->filter_fetch_value (undef);
555	$db->filter_store_value (undef);
556
557	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
558	$h{"fred"} = "joe" ;
559	ok(79, checkOutput( "", "", "", "")) ;
560
561	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
562	ok(80, $h{"fred"} eq "joe");
563	ok(81, checkOutput( "", "", "", "")) ;
564
565	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
566	ok(82, $db->FIRSTKEY() eq "fred") ;
567	ok(83, checkOutput( "", "", "", "")) ;
568
569	undef $db ;
570	untie %h;
571	unlink $Dfile;
572	}
573
574	{
575	# DBM Filter with a closure
576
3245f058	577	use warnings ;
9fe6733a	578	use strict ;
	579	my (%h, $db) ;
	580
	581	unlink $Dfile;
	582	ok(84, $db = tie(%h, 'DB_File', $Dfile, O_RDWR\|O_CREAT, 0640, $DB_HASH ) );
	583
	584	my %result = () ;
	585
	586	sub Closure
	587	{
	588	my ($name) = @_ ;
	589	my $count = 0 ;
	590	my @kept = () ;
	591
	592	return sub { ++$count ;
	593	push @kept, $_ ;
	594	$result{$name} = "$name - $count: [@kept]" ;
	595	}
	596	}
	597
	598	$db->filter_store_key(Closure("store key")) ;
	599	$db->filter_store_value(Closure("store value")) ;
	600	$db->filter_fetch_key(Closure("fetch key")) ;
	601	$db->filter_fetch_value(Closure("fetch value")) ;
	602
	603	$_ = "original" ;
	604
	605	$h{"fred"} = "joe" ;
	606	ok(85, $result{"store key"} eq "store key - 1: [fred]");
	607	ok(86, $result{"store value"} eq "store value - 1: [joe]");
	608	ok(87, ! defined $result{"fetch key"} );
	609	ok(88, ! defined $result{"fetch value"} );
	610	ok(89, $_ eq "original") ;
	611
	612	ok(90, $db->FIRSTKEY() eq "fred") ;
	613	ok(91, $result{"store key"} eq "store key - 1: [fred]");
	614	ok(92, $result{"store value"} eq "store value - 1: [joe]");
	615	ok(93, $result{"fetch key"} eq "fetch key - 1: [fred]");
	616	ok(94, ! defined $result{"fetch value"} );
	617	ok(95, $_ eq "original") ;
	618
	619	$h{"jim"} = "john" ;
	620	ok(96, $result{"store key"} eq "store key - 2: [fred jim]");
	621	ok(97, $result{"store value"} eq "store value - 2: [joe john]");
	622	ok(98, $result{"fetch key"} eq "fetch key - 1: [fred]");
	623	ok(99, ! defined $result{"fetch value"} );
	624	ok(100, $_ eq "original") ;
	625
	626	ok(101, $h{"fred"} eq "joe");
	627	ok(102, $result{"store key"} eq "store key - 3: [fred jim fred]");
	628	ok(103, $result{"store value"} eq "store value - 2: [joe john]");
	629	ok(104, $result{"fetch key"} eq "fetch key - 1: [fred]");
	630	ok(105, $result{"fetch value"} eq "fetch value - 1: [joe]");
	631	ok(106, $_ eq "original") ;
	632
	633	undef $db ;
	634	untie %h;
	635	unlink $Dfile;
	636	}
	637
	638	{
	639	# DBM Filter recursion detection
3245f058	640	use warnings ;
9fe6733a	641	use strict ;
	642	my (%h, $db) ;
	643	unlink $Dfile;
	644
	645	ok(107, $db = tie(%h, 'DB_File', $Dfile, O_RDWR\|O_CREAT, 0640, $DB_HASH ) );
	646
	647	$db->filter_store_key (sub { $_ = $h{$_} }) ;
	648
	649	eval '$h{1} = 1234' ;
	650	ok(108, $@ =~ /^recursion detected in filter_store_key at/ );
	651
	652	undef $db ;
	653	untie %h;
	654	unlink $Dfile;
	655	}
	656
2c2d71f5	657
	658	{
	659	# Examples from the POD
	660
	661	my $file = "xyzt" ;
	662	{
	663	my $redirect = new Redirect $file ;
	664
3245f058	665	use warnings FATAL => qw(all);
2c2d71f5	666	use strict ;
	667	use DB_File ;
	668	use vars qw( %h $k $v ) ;
	669
	670	unlink "fruit" ;
	671	tie %h, "DB_File", "fruit", O_RDWR\|O_CREAT, 0640, $DB_HASH
	672	or die "Cannot open file 'fruit': $!\n";
	673
	674	# Add a few key/value pairs to the file
	675	$h{"apple"} = "red" ;
	676	$h{"orange"} = "orange" ;
	677	$h{"banana"} = "yellow" ;
	678	$h{"tomato"} = "red" ;
	679
	680	# Check for existence of a key
	681	print "Banana Exists\n\n" if $h{"banana"} ;
	682
	683	# Delete a key/value pair.
	684	delete $h{"apple"} ;
	685
	686	# print the contents of the file
	687	while (($k, $v) = each %h)
	688	{ print "$k -> $v\n" }
	689
	690	untie %h ;
	691
	692	unlink "fruit" ;
	693	}
	694
	695	ok(109, docat_del($file) eq <<'EOM') ;
	696	Banana Exists
	697
	698	orange -> orange
	699	tomato -> red
	700	banana -> yellow
	701	EOM
	702
	703	}
	704
cbc5248d	705	{
	706	# Bug ID 20001013.009
	707	#
	708	# test that $hash{KEY} = undef doesn't produce the warning
	709	# Use of uninitialized value in null operation
	710	use warnings ;
	711	use strict ;
	712	use DB_File ;
	713
	714	unlink $Dfile;
	715	my %h ;
	716	my $a = "";
	717	local $SIG{__WARN__} = sub {$a = $_[0]} ;
	718
	719	tie %h, 'DB_File', $Dfile or die "Can't open file: $!\n" ;
	720	$h{ABC} = undef;
	721	ok(110, $a eq "") ;
3245f058	722	untie %h ;
	723	unlink $Dfile;
	724	}
	725
	726	{
	727	# test that %hash = () doesn't produce the warning
	728	# Argument "" isn't numeric in entersub
	729	use warnings ;
	730	use strict ;
	731	use DB_File ;
	732
	733	unlink $Dfile;
	734	my %h ;
	735	my $a = "";
	736	local $SIG{__WARN__} = sub {$a = $_[0]} ;
	737
	738	tie %h, 'DB_File', $Dfile or die "Can't open file: $!\n" ;
	739	%h = (); ;
	740	ok(111, $a eq "") ;
	741	untie %h ;
cbc5248d	742	unlink $Dfile;
	743	}
	744
0bf2e707	745	{
	746	# When iterating over a tied hash using "each", the key passed to FETCH
	747	# will be recycled and passed to NEXTKEY. If a Source Filter modifies the
	748	# key in FETCH via a filter_fetch_key method we need to check that the
	749	# modified key doesn't get passed to NEXTKEY.
	750	# Also Test "keys" & "values" while we are at it.
	751
	752	use warnings ;
	753	use strict ;
	754	use DB_File ;
	755
	756	unlink $Dfile;
	757	my $bad_key = 0 ;
	758	my %h = () ;
	759	my $db ;
	760	ok(112, $db = tie(%h, 'DB_File', $Dfile, O_RDWR\|O_CREAT, 0640, $DB_HASH ) );
	761	$db->filter_fetch_key (sub { $_ =~ s/^Beta_/Alpha_/ if defined $_}) ;
	762	$db->filter_store_key (sub { $bad_key = 1 if /^Beta_/ ; $_ =~ s/^Alpha_/Beta_/}) ;
	763
	764	$h{'Alpha_ABC'} = 2 ;
	765	$h{'Alpha_DEF'} = 5 ;
	766
	767	ok(113, $h{'Alpha_ABC'} == 2);
	768	ok(114, $h{'Alpha_DEF'} == 5);
	769
	770	my ($k, $v) = ("","");
	771	while (($k, $v) = each %h) {}
	772	ok(115, $bad_key == 0);
	773
	774	$bad_key = 0 ;
	775	foreach $k (keys %h) {}
	776	ok(116, $bad_key == 0);
	777
	778	$bad_key = 0 ;
	779	foreach $v (values %h) {}
	780	ok(117, $bad_key == 0);
	781
	782	undef $db ;
	783	untie %h ;
	784	unlink $Dfile;
	785	}
	786
a0d0e21e	787	exit ;