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

#!./perl

# $RCSfile: dbm.t,v $$Revision: 4.1 $$Date: 92/08/07 18:27:43 $

BEGIN {
    unshift @INC, '../lib';
    require Config; import Config;
    if ($Config{'extensions'} !~ /\bGDBM_File\b/) {
	print "1..0\n";
	exit 0;
    }
}

use GDBM_File;

print "1..66\n";

unlink <Op.dbmx*>;

umask(0);
print (tie(%h,GDBM_File,'Op.dbmx', &GDBM_WRCREAT, 0640) ? "ok 1\n" : "not ok 1\n");

$Dfile = "Op.dbmx.pag";
if (! -e $Dfile) {
	($Dfile) = <Op.dbmx*>;
}
if ($^O eq 'amigaos' || $^O eq 'os2' || $^O eq 'MSWin32' || $^O eq 'dos') {
    print "ok 2 # Skipped: different file permission semantics\n";
}
else {
    ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
     $blksize,$blocks) = stat($Dfile);
    print (($mode & 0777) == 0640 ? "ok 2\n" : "not ok 2\n");
}
while (($key,$value) = each(%h)) {
    $i++;
}
print (!$i ? "ok 3\n" : "not ok 3\n");

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

$h{'abc'} = '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';
$h{'c'} = 'C';
$h{'d'} = 'D';
$h{'e'} = 'E';
$h{'f'} = 'F';
$h{'g'} = 'G';
$h{'h'} = 'H';
$h{'i'} = 'I';

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

untie(%h);
print (tie(%h,GDBM_File,'Op.dbmx', &GDBM_WRCREAT, 0640) ? "ok 4\n" : "not ok 4\n");

$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'};
delete $h{'goner3'};

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

if ($#keys == 29 && $#values == 29) {print "ok 5\n";} else {print "not ok 5\n";}

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;
    }
}

if ($i == 30) {print "ok 6\n";} else {print "not ok 6\n";}

@keys = ('blurfl', keys(%h), 'dyick');
if ($#keys == 31) {print "ok 7\n";} else {print "not ok 7\n";}

$h{'foo'} = '';
$h{''} = 'bar';

# check cache overflow and numeric keys and contents
$ok = 1;
for ($i = 1; $i < 200; $i++) { $h{$i + 0} = $i + 0; }
for ($i = 1; $i < 200; $i++) { $ok = 0 unless $h{$i} == $i; }
print ($ok ? "ok 8\n" : "not ok 8\n");

($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
   $blksize,$blocks) = stat($Dfile);
print ($size > 0 ? "ok 9\n" : "not ok 9\n");

@h{0..200} = 200..400;
@foo = @h{0..200};
print join(':',200..400) eq join(':',@foo) ? "ok 10\n" : "not ok 10\n";

print ($h{'foo'} eq '' ? "ok 11\n" : "not ok 11\n");
print ($h{''} eq 'bar' ? "ok 12\n" : "not ok 12\n");

untie %h;
unlink 'Op.dbmx.dir', $Dfile;

sub ok
{
    my $no = shift ;
    my $result = shift ;

    print "not " unless $result ;
    print "ok $no\n" ;
}

{
   # sub-class test

   package Another ;

   use strict ;

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

   package SubDB ;

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

   require Exporter ;
   use GDBM_File;
   @ISA=qw(GDBM_File);
   @EXPORT = @GDBM_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 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(13, $@ eq "") ;
    my %h ;
    my $X ;
    eval '
	$X = tie(%h, "SubDB","dbhash.tmp", &GDBM_WRCREAT, 0640 );
	' ;

    main::ok(14, $@ eq "") ;

    my $ret = eval '$h{"fred"} = 3 ; return $h{"fred"} ' ;
    main::ok(15, $@ eq "") ;
    main::ok(16, $ret == 5) ;

    $ret = eval ' &GDBM_WRCREAT eq &main::GDBM_WRCREAT ' ;
    main::ok(17, $@ eq "" ) ;
    main::ok(18, $ret == 1) ;

    $ret = eval '$X->A_new_method("fred") ' ;
    main::ok(19, $@ eq "") ;
    main::ok(20, $ret eq "[[5]]") ;

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

}

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

   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' ;
   }
   
   unlink <Op.dbmx*>;
   ok(21, $db = tie(%h, 'GDBM_File','Op.dbmx', &GDBM_WRCREAT, 0640)) ;

   $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(22, checkOutput( "", "fred", "", "joe")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(23, $h{"fred"} eq "joe");
   #                   fk    sk     fv    sv
   ok(24, checkOutput( "", "fred", "joe", "")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(25, $db->FIRSTKEY() eq "fred") ;
   #                    fk     sk  fv  sv
   ok(26, 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(27, checkOutput( "", "fred", "", "Jxe")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(28, $h{"Fred"} eq "[Jxe]");
   #                   fk   sk     fv    sv
   ok(29, checkOutput( "", "fred", "[Jxe]", "")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(30, $db->FIRSTKEY() eq "FRED") ;
   #                   fk   sk     fv    sv
   ok(31, 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(32, checkOutput( "", "fred", "", "joe")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(33, $h{"fred"} eq "joe");
   ok(34, checkOutput( "", "fred", "joe", "")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(35, $db->FIRSTKEY() eq "fred") ;
   ok(36, 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(37, checkOutput( "", "", "", "")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(38, $h{"fred"} eq "joe");
   ok(39, checkOutput( "", "", "", "")) ;

   ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
   ok(40, $db->FIRSTKEY() eq "fred") ;
   ok(41, checkOutput( "", "", "", "")) ;

   undef $db ;
   untie %h;
   unlink <Op.dbmx*>;
}

{    
    # DBM Filter with a closure

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

    unlink <Op.dbmx*>;
    ok(42, $db = tie(%h, 'GDBM_File','Op.dbmx', &GDBM_WRCREAT, 0640)) ;

    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(43, $result{"store key"} eq "store key - 1: [fred]");
    ok(44, $result{"store value"} eq "store value - 1: [joe]");
    ok(45, !defined $result{"fetch key"} );
    ok(46, !defined $result{"fetch value"} );
    ok(47, $_ eq "original") ;

    ok(48, $db->FIRSTKEY() eq "fred") ;
    ok(49, $result{"store key"} eq "store key - 1: [fred]");
    ok(50, $result{"store value"} eq "store value - 1: [joe]");
    ok(51, $result{"fetch key"} eq "fetch key - 1: [fred]");
    ok(52, ! defined $result{"fetch value"} );
    ok(53, $_ eq "original") ;

    $h{"jim"}  = "john" ;
    ok(54, $result{"store key"} eq "store key - 2: [fred jim]");
    ok(55, $result{"store value"} eq "store value - 2: [joe john]");
    ok(56, $result{"fetch key"} eq "fetch key - 1: [fred]");
    ok(57, $result{"fetch value"} eq "");
    ok(58, $_ eq "original") ;

    ok(59, $h{"fred"} eq "joe");
    ok(60, $result{"store key"} eq "store key - 3: [fred jim fred]");
    ok(61, $result{"store value"} eq "store value - 2: [joe john]");
    ok(62, $result{"fetch key"} eq "fetch key - 1: [fred]");
    ok(63, $result{"fetch value"} eq "fetch value - 1: [joe]");
    ok(64, $_ eq "original") ;

    undef $db ;
    untie %h;
    unlink <Op.dbmx*>;
}

{
   # DBM Filter recursion detection
   use strict ;
   my (%h, $db) ;
   unlink <Op.dbmx*>;

   ok(65, $db = tie(%h, 'GDBM_File','Op.dbmx', &GDBM_WRCREAT, 0640)) ;

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

   eval '$h{1} = 1234' ;
   ok(66, $@ =~ /^recursion detected in filter_store_key at/ );
   
   undef $db ;
   untie %h;
   unlink <Op.dbmx*>;
}
Commit	Line	Data
bee1dbe2	1	#!./perl
bee1dbe2	2
a0d0e21e	3	# $RCSfile: dbm.t,v $$Revision: 4.1 $$Date: 92/08/07 18:27:43 $
	4
	5	BEGIN {
93430cb4	6	unshift @INC, '../lib';
a0d0e21e	7	require Config; import Config;
	8	if ($Config{'extensions'} !~ /\bGDBM_File\b/) {
	9	print "1..0\n";
	10	exit 0;
	11	}
	12	}
	13
	14	use GDBM_File;
	15
9fe6733a	16	print "1..66\n";
bee1dbe2	17
a0d0e21e	18	unlink <Op.dbmx*>;
a0d0e21e	19
bee1dbe2	20	umask(0);
a0d0e21e	21	print (tie(%h,GDBM_File,'Op.dbmx', &GDBM_WRCREAT, 0640) ? "ok 1\n" : "not ok 1\n");
	22
	23	$Dfile = "Op.dbmx.pag";
	24	if (! -e $Dfile) {
	25	($Dfile) = <Op.dbmx*>;
	26	}
39e571d4	27	if ($^O eq 'amigaos' \|\| $^O eq 'os2' \|\| $^O eq 'MSWin32' \|\| $^O eq 'dos') {
fac76ed7	28	print "ok 2 # Skipped: different file permission semantics\n";
544a3566	29	}
	30	else {
	31	($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
	32	$blksize,$blocks) = stat($Dfile);
	33	print (($mode & 0777) == 0640 ? "ok 2\n" : "not ok 2\n");
	34	}
a0d0e21e	35	while (($key,$value) = each(%h)) {
bee1dbe2	36	$i++;
	37	}
	38	print (!$i ? "ok 3\n" : "not ok 3\n");
	39
	40	$h{'goner1'} = 'snork';
	41
	42	$h{'abc'} = 'ABC';
	43	$h{'def'} = 'DEF';
	44	$h{'jkl','mno'} = "JKL\034MNO";
	45	$h{'a',2,3,4,5} = join("\034",'A',2,3,4,5);
	46	$h{'a'} = 'A';
	47	$h{'b'} = 'B';
	48	$h{'c'} = 'C';
	49	$h{'d'} = 'D';
	50	$h{'e'} = 'E';
	51	$h{'f'} = 'F';
	52	$h{'g'} = 'G';
	53	$h{'h'} = 'H';
	54	$h{'i'} = 'I';
	55
	56	$h{'goner2'} = 'snork';
	57	delete $h{'goner2'};
	58
a0d0e21e	59	untie(%h);
a0d0e21e	60	print (tie(%h,GDBM_File,'Op.dbmx', &GDBM_WRCREAT, 0640) ? "ok 4\n" : "not ok 4\n");
bee1dbe2	61
	62	$h{'j'} = 'J';
	63	$h{'k'} = 'K';
	64	$h{'l'} = 'L';
	65	$h{'m'} = 'M';
	66	$h{'n'} = 'N';
	67	$h{'o'} = 'O';
	68	$h{'p'} = 'P';
	69	$h{'q'} = 'Q';
	70	$h{'r'} = 'R';
	71	$h{'s'} = 'S';
	72	$h{'t'} = 'T';
	73	$h{'u'} = 'U';
	74	$h{'v'} = 'V';
	75	$h{'w'} = 'W';
	76	$h{'x'} = 'X';
	77	$h{'y'} = 'Y';
	78	$h{'z'} = 'Z';
	79
	80	$h{'goner3'} = 'snork';
	81
	82	delete $h{'goner1'};
	83	delete $h{'goner3'};
	84
	85	@keys = keys(%h);
	86	@values = values(%h);
	87
	88	if ($#keys == 29 && $#values == 29) {print "ok 5\n";} else {print "not ok 5\n";}
	89
c6aa4a32	90	while (($key,$value) = each(%h)) {
2f52a358	91	if ($key eq $keys[$i] && $value eq $values[$i] && $key eq lc($value)) {
bee1dbe2	92	$key =~ y/a-z/A-Z/;
	93	$i++ if $key eq $value;
	94	}
	95	}
	96
	97	if ($i == 30) {print "ok 6\n";} else {print "not ok 6\n";}
	98
c6aa4a32	99	@keys = ('blurfl', keys(%h), 'dyick');
bee1dbe2	100	if ($#keys == 31) {print "ok 7\n";} else {print "not ok 7\n";}
	101
	102	$h{'foo'} = '';
	103	$h{''} = 'bar';
	104
	105	# check cache overflow and numeric keys and contents
	106	$ok = 1;
	107	for ($i = 1; $i < 200; $i++) { $h{$i + 0} = $i + 0; }
	108	for ($i = 1; $i < 200; $i++) { $ok = 0 unless $h{$i} == $i; }
	109	print ($ok ? "ok 8\n" : "not ok 8\n");
	110
	111	($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,$ctime,
a0d0e21e	112	$blksize,$blocks) = stat($Dfile);
bee1dbe2	113	print ($size > 0 ? "ok 9\n" : "not ok 9\n");
	114
	115	@h{0..200} = 200..400;
	116	@foo = @h{0..200};
	117	print join(':',200..400) eq join(':',@foo) ? "ok 10\n" : "not ok 10\n";
	118
	119	print ($h{'foo'} eq '' ? "ok 11\n" : "not ok 11\n");
	120	print ($h{''} eq 'bar' ? "ok 12\n" : "not ok 12\n");
	121
bbad3607	122	untie %h;
a0d0e21e	123	unlink 'Op.dbmx.dir', $Dfile;
4e2a63a7	124
	125	sub ok
	126	{
	127	my $no = shift ;
	128	my $result = shift ;
	129
	130	print "not " unless $result ;
	131	print "ok $no\n" ;
	132	}
	133
	134	{
	135	# sub-class test
	136
	137	package Another ;
	138
	139	use strict ;
	140
	141	open(FILE, ">SubDB.pm") or die "Cannot open SubDB.pm: $!\n" ;
	142	print FILE <<'EOM' ;
	143
	144	package SubDB ;
	145
	146	use strict ;
	147	use vars qw(@ISA @EXPORT) ;
	148
	149	require Exporter ;
	150	use GDBM_File;
	151	@ISA=qw(GDBM_File);
	152	@EXPORT = @GDBM_File::EXPORT ;
	153
	154	sub STORE {
	155	my $self = shift ;
	156	my $key = shift ;
	157	my $value = shift ;
	158	$self->SUPER::STORE($key, $value * 2) ;
	159	}
	160
	161	sub FETCH {
	162	my $self = shift ;
	163	my $key = shift ;
	164	$self->SUPER::FETCH($key) - 1 ;
	165	}
	166
	167	sub A_new_method
	168	{
	169	my $self = shift ;
	170	my $key = shift ;
	171	my $value = $self->FETCH($key) ;
	172	return "[[$value]]" ;
	173	}
	174
	175	1 ;
	176	EOM
	177
	178	close FILE ;
	179
	180	BEGIN { push @INC, '.'; }
	181
	182	eval 'use SubDB ; ';
	183	main::ok(13, $@ eq "") ;
	184	my %h ;
	185	my $X ;
	186	eval '
	187	$X = tie(%h, "SubDB","dbhash.tmp", &GDBM_WRCREAT, 0640 );
188	' ;
189
190	main::ok(14, $@ eq "") ;
191
192	my $ret = eval '$h{"fred"} = 3 ; return $h{"fred"} ' ;
193	main::ok(15, $@ eq "") ;
194	main::ok(16, $ret == 5) ;
195
196	$ret = eval ' &GDBM_WRCREAT eq &main::GDBM_WRCREAT ' ;
197	main::ok(17, $@ eq "" ) ;
198	main::ok(18, $ret == 1) ;
199
200	$ret = eval '$X->A_new_method("fred") ' ;
201	main::ok(19, $@ eq "") ;
202	main::ok(20, $ret eq "[[5]]") ;
203
fac76ed7	204	undef $X;
fac76ed7	205	untie(%h);
84902520	206	unlink "SubDB.pm", <dbhash.tmp*> ;
4e2a63a7	207
4e2a63a7	208	}
9fe6733a	209
	210	{
	211	# DBM Filter tests
	212	use strict ;
	213	my (%h, $db) ;
	214	my ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	215
	216	sub checkOutput
	217	{
	218	my($fk, $sk, $fv, $sv) = @_ ;
	219	return
	220	$fetch_key eq $fk && $store_key eq $sk &&
	221	$fetch_value eq $fv && $store_value eq $sv &&
	222	$_ eq 'original' ;
	223	}
	224
	225	unlink <Op.dbmx*>;
	226	ok(21, $db = tie(%h, 'GDBM_File','Op.dbmx', &GDBM_WRCREAT, 0640)) ;
	227
	228	$db->filter_fetch_key (sub { $fetch_key = $_ }) ;
	229	$db->filter_store_key (sub { $store_key = $_ }) ;
	230	$db->filter_fetch_value (sub { $fetch_value = $_}) ;
	231	$db->filter_store_value (sub { $store_value = $_ }) ;
	232
	233	$_ = "original" ;
	234
	235	$h{"fred"} = "joe" ;
	236	# fk sk fv sv
	237	ok(22, checkOutput( "", "fred", "", "joe")) ;
	238
	239	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	240	ok(23, $h{"fred"} eq "joe");
	241	# fk sk fv sv
	242	ok(24, checkOutput( "", "fred", "joe", "")) ;
	243
	244	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	245	ok(25, $db->FIRSTKEY() eq "fred") ;
	246	# fk sk fv sv
	247	ok(26, checkOutput( "fred", "", "", "")) ;
	248
	249	# replace the filters, but remember the previous set
	250	my ($old_fk) = $db->filter_fetch_key
	251	(sub { $_ = uc $_ ; $fetch_key = $_ }) ;
	252	my ($old_sk) = $db->filter_store_key
	253	(sub { $_ = lc $_ ; $store_key = $_ }) ;
	254	my ($old_fv) = $db->filter_fetch_value
	255	(sub { $_ = "[$_]"; $fetch_value = $_ }) ;
	256	my ($old_sv) = $db->filter_store_value
	257	(sub { s/o/x/g; $store_value = $_ }) ;
	258
	259	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	260	$h{"Fred"} = "Joe" ;
	261	# fk sk fv sv
	262	ok(27, checkOutput( "", "fred", "", "Jxe")) ;
	263
	264	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	265	ok(28, $h{"Fred"} eq "[Jxe]");
	266	# fk sk fv sv
	267	ok(29, checkOutput( "", "fred", "[Jxe]", "")) ;
	268
	269	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
	270	ok(30, $db->FIRSTKEY() eq "FRED") ;
	271	# fk sk fv sv
	272	ok(31, checkOutput( "FRED", "", "", "")) ;
273
274	# put the original filters back
275	$db->filter_fetch_key ($old_fk);
276	$db->filter_store_key ($old_sk);
277	$db->filter_fetch_value ($old_fv);
278	$db->filter_store_value ($old_sv);
279
280	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
281	$h{"fred"} = "joe" ;
282	ok(32, checkOutput( "", "fred", "", "joe")) ;
283
284	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
285	ok(33, $h{"fred"} eq "joe");
286	ok(34, checkOutput( "", "fred", "joe", "")) ;
287
288	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
289	ok(35, $db->FIRSTKEY() eq "fred") ;
290	ok(36, checkOutput( "fred", "", "", "")) ;
291
292	# delete the filters
293	$db->filter_fetch_key (undef);
294	$db->filter_store_key (undef);
295	$db->filter_fetch_value (undef);
296	$db->filter_store_value (undef);
297
298	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
299	$h{"fred"} = "joe" ;
300	ok(37, checkOutput( "", "", "", "")) ;
301
302	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
303	ok(38, $h{"fred"} eq "joe");
304	ok(39, checkOutput( "", "", "", "")) ;
305
306	($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
307	ok(40, $db->FIRSTKEY() eq "fred") ;
308	ok(41, checkOutput( "", "", "", "")) ;
309
310	undef $db ;
311	untie %h;
312	unlink <Op.dbmx*>;
313	}
314
315	{
316	# DBM Filter with a closure
317
318	use strict ;
319	my (%h, $db) ;
320
321	unlink <Op.dbmx*>;
322	ok(42, $db = tie(%h, 'GDBM_File','Op.dbmx', &GDBM_WRCREAT, 0640)) ;
323
324	my %result = () ;
325
326	sub Closure
327	{
328	my ($name) = @_ ;
329	my $count = 0 ;
330	my @kept = () ;
331
332	return sub { ++$count ;
333	push @kept, $_ ;
334	$result{$name} = "$name - $count: [@kept]" ;
335	}
336	}
337
338	$db->filter_store_key(Closure("store key")) ;
339	$db->filter_store_value(Closure("store value")) ;
340	$db->filter_fetch_key(Closure("fetch key")) ;
341	$db->filter_fetch_value(Closure("fetch value")) ;
342
343	$_ = "original" ;
344
345	$h{"fred"} = "joe" ;
346	ok(43, $result{"store key"} eq "store key - 1: [fred]");
347	ok(44, $result{"store value"} eq "store value - 1: [joe]");
348	ok(45, !defined $result{"fetch key"} );
349	ok(46, !defined $result{"fetch value"} );
350	ok(47, $_ eq "original") ;
351
352	ok(48, $db->FIRSTKEY() eq "fred") ;
353	ok(49, $result{"store key"} eq "store key - 1: [fred]");
354	ok(50, $result{"store value"} eq "store value - 1: [joe]");
355	ok(51, $result{"fetch key"} eq "fetch key - 1: [fred]");
356	ok(52, ! defined $result{"fetch value"} );
357	ok(53, $_ eq "original") ;
358
359	$h{"jim"} = "john" ;
360	ok(54, $result{"store key"} eq "store key - 2: [fred jim]");
361	ok(55, $result{"store value"} eq "store value - 2: [joe john]");
362	ok(56, $result{"fetch key"} eq "fetch key - 1: [fred]");
363	ok(57, $result{"fetch value"} eq "");
364	ok(58, $_ eq "original") ;
365
366	ok(59, $h{"fred"} eq "joe");
367	ok(60, $result{"store key"} eq "store key - 3: [fred jim fred]");
368	ok(61, $result{"store value"} eq "store value - 2: [joe john]");
369	ok(62, $result{"fetch key"} eq "fetch key - 1: [fred]");
370	ok(63, $result{"fetch value"} eq "fetch value - 1: [joe]");
371	ok(64, $_ eq "original") ;
372
373	undef $db ;
374	untie %h;
375	unlink <Op.dbmx*>;
376	}
377
378	{
379	# DBM Filter recursion detection
380	use strict ;
381	my (%h, $db) ;
382	unlink <Op.dbmx*>;
383
384	ok(65, $db = tie(%h, 'GDBM_File','Op.dbmx', &GDBM_WRCREAT, 0640)) ;
385
386	$db->filter_store_key (sub { $_ = $h{$_} }) ;
387
388	eval '$h{1} = 1234' ;
389	ok(66, $@ =~ /^recursion detected in filter_store_key at/ );
390
391	undef $db ;
392	untie %h;
393	unlink <Op.dbmx*>;
394	}