@INC = '../lib';
require Config; import Config;
if ($Config{'extensions'} !~ /\bDB_File\b/) {
- print "1..0\n";
+ print "1..0 # Skip: DB_File was not built\n";
exit 0;
}
}
use DB_File;
use Fcntl;
use strict ;
-use vars qw($dbh $Dfile) ;
+use warnings;
+use vars qw($dbh $Dfile $bad_ones $FA) ;
+
+# full tied array support started in Perl 5.004_57
+# Double check to see if it is available.
+
+{
+ sub try::TIEARRAY { bless [], "try" }
+ sub try::FETCHSIZE { $FA = 1 }
+ $FA = 0 ;
+ my @a ;
+ tie @a, 'try' ;
+ my $a = @a ;
+}
+
sub ok
{
print "not " unless $result ;
print "ok $no\n" ;
+
+ return $result ;
+}
+
+{
+ 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
+{
+ my $file = shift;
+ local $/ = undef;
+ open(CAT,$file) || die "Cannot open $file:$!";
+ my $result = <CAT>;
+ close(CAT);
+ return $result;
+}
+
+sub docat_del
+{
+ my $file = shift;
+ local $/ = undef;
+ open(CAT,$file) || die "Cannot open $file: $!";
+ my $result = <CAT>;
+ close(CAT);
+ unlink $file ;
+ return $result;
+}
+
+sub bad_one
+{
+ print STDERR <<EOM unless $bad_ones++ ;
+#
+# Some older versions of Berkeley DB version 1 will fail tests 51,
+# 53 and 55.
+#
+# You can safely ignore the errors if you're never going to use the
+# broken functionality (recno databases with a modified bval).
+# Otherwise you'll have to upgrade your DB library.
+#
+# If you want to use Berkeley DB version 1, then 1.85 and 1.86 are the
+# last versions that were released. Berkeley DB version 2 is continually
+# being updated -- Check out http://www.sleepycat.com/ for more details.
+#
+EOM
}
-print "1..47\n";
+print "1..128\n";
my $Dfile = "recno.tmp";
unlink $Dfile ;
# Check the interface to RECNOINFO
my $dbh = new DB_File::RECNOINFO ;
-$^W = 0 ;
-ok(1, $dbh->{bval} == undef ) ;
-ok(2, $dbh->{cachesize} == undef) ;
-ok(3, $dbh->{psize} == undef) ;
-ok(4, $dbh->{flags} == undef) ;
-ok(5, $dbh->{lorder} == undef);
-ok(6, $dbh->{reclen} == undef);
-ok(7, $dbh->{bfname} eq undef);
-$^W = 0 ;
+ok(1, ! defined $dbh->{bval}) ;
+ok(2, ! defined $dbh->{cachesize}) ;
+ok(3, ! defined $dbh->{psize}) ;
+ok(4, ! defined $dbh->{flags}) ;
+ok(5, ! defined $dbh->{lorder}) ;
+ok(6, ! defined $dbh->{reclen}) ;
+ok(7, ! defined $dbh->{bfname}) ;
$dbh->{bval} = 3000 ;
ok(8, $dbh->{bval} == 3000 );
my @h ;
ok(17, $X = tie @h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $DB_RECNO ) ;
-ok(18, ( (stat($Dfile))[2] & 0777) == 0640) ;
+ok(18, ((stat($Dfile))[2] & 0777) == ($^O eq 'os2' ? 0666 : 0640)
+ || $^O eq 'MSWin32' || $^O eq 'amigaos') ;
#my $l = @h ;
my $l = $X->length ;
-ok(19, !$l );
+ok(19, ($FA ? @h == 0 : !$l) );
my @data = qw( a b c d ever f g h i j k longername m n o p) ;
ok(21, defined $h[1] );
ok(22, ! defined $h[16] );
-ok(23, $X->length == @data );
+ok(23, $FA ? @h == @data : $X->length == @data );
# Overwrite an entry & check fetch it
#PUSH
my @push_data = qw(added to the end) ;
-#my push (@h, @push_data) ;
-$X->push(@push_data) ;
+($FA ? push(@h, @push_data) : $X->push(@push_data)) ;
push (@data, @push_data) ;
ok(25, $h[++$i] eq 'added' );
ok(26, $h[++$i] eq 'to' );
# POP
my $popped = pop (@data) ;
-#my $value = pop(@h) ;
-my $value = $X->pop ;
+my $value = ($FA ? pop @h : $X->pop) ;
ok(29, $value eq $popped) ;
# SHIFT
-#$value = shift @h
-$value = $X->shift ;
+$value = ($FA ? shift @h : $X->shift) ;
my $shifted = shift @data ;
ok(30, $value eq $shifted );
# UNSHIFT
# empty list
-$X->unshift ;
-ok(31, $X->length == @data );
+($FA ? unshift @h : $X->unshift) ;
+ok(31, ($FA ? @h == @data : $X->length == @data ));
my @new_data = qw(add this to the start of the array) ;
-#unshift @h, @new_data ;
-$X->unshift (@new_data) ;
+$FA ? unshift (@h, @new_data) : $X->unshift (@new_data) ;
unshift (@data, @new_data) ;
-ok(32, $X->length == @data );
+ok(32, $FA ? @h == @data : $X->length == @data );
ok(33, $h[0] eq "add") ;
ok(34, $h[1] eq "this") ;
ok(35, $h[2] eq "to") ;
# get the last element of the array
ok(43, $h[-1] eq $data[-1] );
-ok(44, $h[-1] eq $h[$X->length -1] );
+ok(44, $h[-1] eq $h[ ($FA ? @h : $X->length) -1] );
# get the first element using a negative subscript
-eval '$h[ - ( $X->length)] = "abcd"' ;
+eval '$h[ - ( $FA ? @h : $X->length)] = "abcd"' ;
ok(45, $@ eq "" );
ok(46, $h[0] eq "abcd" );
# now try to read before the start of the array
-eval '$h[ - (1 + $X->length)] = 1234' ;
+eval '$h[ - (1 + ($FA ? @h : $X->length))] = 1234' ;
ok(47, $@ =~ '^Modification of non-creatable array value attempted' );
# IMPORTANT - $X must be undefined before the untie otherwise the
unlink $Dfile;
+
+{
+ # Check bval defaults to \n
+
+ my @h = () ;
+ my $dbh = new DB_File::RECNOINFO ;
+ ok(48, tie @h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $dbh ) ;
+ $h[0] = "abc" ;
+ $h[1] = "def" ;
+ $h[3] = "ghi" ;
+ untie @h ;
+ my $x = docat($Dfile) ;
+ unlink $Dfile;
+ ok(49, $x eq "abc\ndef\n\nghi\n") ;
+}
+
+{
+ # Change bval
+
+ my @h = () ;
+ my $dbh = new DB_File::RECNOINFO ;
+ $dbh->{bval} = "-" ;
+ ok(50, tie @h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $dbh ) ;
+ $h[0] = "abc" ;
+ $h[1] = "def" ;
+ $h[3] = "ghi" ;
+ untie @h ;
+ my $x = docat($Dfile) ;
+ unlink $Dfile;
+ my $ok = ($x eq "abc-def--ghi-") ;
+ bad_one() unless $ok ;
+ ok(51, $ok) ;
+}
+
+{
+ # Check R_FIXEDLEN with default bval (space)
+
+ my @h = () ;
+ my $dbh = new DB_File::RECNOINFO ;
+ $dbh->{flags} = R_FIXEDLEN ;
+ $dbh->{reclen} = 5 ;
+ ok(52, tie @h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $dbh ) ;
+ $h[0] = "abc" ;
+ $h[1] = "def" ;
+ $h[3] = "ghi" ;
+ untie @h ;
+ my $x = docat($Dfile) ;
+ unlink $Dfile;
+ my $ok = ($x eq "abc def ghi ") ;
+ bad_one() unless $ok ;
+ ok(53, $ok) ;
+}
+
+{
+ # Check R_FIXEDLEN with user-defined bval
+
+ my @h = () ;
+ my $dbh = new DB_File::RECNOINFO ;
+ $dbh->{flags} = R_FIXEDLEN ;
+ $dbh->{bval} = "-" ;
+ $dbh->{reclen} = 5 ;
+ ok(54, tie @h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $dbh ) ;
+ $h[0] = "abc" ;
+ $h[1] = "def" ;
+ $h[3] = "ghi" ;
+ untie @h ;
+ my $x = docat($Dfile) ;
+ unlink $Dfile;
+ my $ok = ($x eq "abc--def-------ghi--") ;
+ bad_one() unless $ok ;
+ ok(55, $ok) ;
+}
+
+{
+ # check that attempting to tie an associative array to a DB_RECNO will fail
+
+ my $filename = "xyz" ;
+ my %x ;
+ eval { tie %x, 'DB_File', $filename, O_RDWR|O_CREAT, 0640, $DB_RECNO ; } ;
+ ok(56, $@ =~ /^DB_File can only tie an array to a DB_RECNO 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(57, $@ eq "") ;
+ my @h ;
+ my $X ;
+ eval '
+ $X = tie(@h, "SubDB","recno.tmp", O_RDWR|O_CREAT, 0640, $DB_RECNO );
+ ' ;
+
+ main::ok(58, $@ eq "") ;
+
+ my $ret = eval '$h[3] = 3 ; return $h[3] ' ;
+ main::ok(59, $@ eq "") ;
+ main::ok(60, $ret == 5) ;
+
+ my $value = 0;
+ $ret = eval '$X->put(1, 4) ; $X->get(1, $value) ; return $value' ;
+ main::ok(61, $@ eq "") ;
+ main::ok(62, $ret == 10) ;
+
+ $ret = eval ' R_NEXT eq main::R_NEXT ' ;
+ main::ok(63, $@ eq "" ) ;
+ main::ok(64, $ret == 1) ;
+
+ $ret = eval '$X->A_new_method(1) ' ;
+ main::ok(65, $@ eq "") ;
+ main::ok(66, $ret eq "[[11]]") ;
+
+ undef $X;
+ untie(@h);
+ unlink "SubDB.pm", "recno.tmp" ;
+
+}
+
+{
+
+ # test $#
+ my $self ;
+ unlink $Dfile;
+ ok(67, $self = tie @h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $DB_RECNO ) ;
+ $h[0] = "abc" ;
+ $h[1] = "def" ;
+ $h[2] = "ghi" ;
+ $h[3] = "jkl" ;
+ ok(68, $FA ? $#h == 3 : $self->length() == 4) ;
+ undef $self ;
+ untie @h ;
+ my $x = docat($Dfile) ;
+ ok(69, $x eq "abc\ndef\nghi\njkl\n") ;
+
+ # $# sets array to same length
+ ok(70, $self = tie @h, 'DB_File', $Dfile, O_RDWR, 0640, $DB_RECNO ) ;
+ if ($FA)
+ { $#h = 3 }
+ else
+ { $self->STORESIZE(4) }
+ ok(71, $FA ? $#h == 3 : $self->length() == 4) ;
+ undef $self ;
+ untie @h ;
+ $x = docat($Dfile) ;
+ ok(72, $x eq "abc\ndef\nghi\njkl\n") ;
+
+ # $# sets array to bigger
+ ok(73, $self = tie @h, 'DB_File', $Dfile, O_RDWR, 0640, $DB_RECNO ) ;
+ if ($FA)
+ { $#h = 6 }
+ else
+ { $self->STORESIZE(7) }
+ ok(74, $FA ? $#h == 6 : $self->length() == 7) ;
+ undef $self ;
+ untie @h ;
+ $x = docat($Dfile) ;
+ ok(75, $x eq "abc\ndef\nghi\njkl\n\n\n\n") ;
+
+ # $# sets array smaller
+ ok(76, $self = tie @h, 'DB_File', $Dfile, O_RDWR, 0640, $DB_RECNO ) ;
+ if ($FA)
+ { $#h = 2 }
+ else
+ { $self->STORESIZE(3) }
+ ok(77, $FA ? $#h == 2 : $self->length() == 3) ;
+ undef $self ;
+ untie @h ;
+ $x = docat($Dfile) ;
+ ok(78, $x eq "abc\ndef\nghi\n") ;
+
+ unlink $Dfile;
+
+
+}
+
+{
+ # 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(79, $db = tie(@h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $DB_RECNO ) );
+
+ $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" ;
+
+ $h[0] = "joe" ;
+ # fk sk fv sv
+ ok(80, checkOutput( "", 0, "", "joe")) ;
+
+ ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
+ ok(81, $h[0] eq "joe");
+ # fk sk fv sv
+ ok(82, checkOutput( "", 0, "joe", "")) ;
+
+ ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
+ ok(83, $db->FIRSTKEY() == 0) ;
+ # fk sk fv sv
+ ok(84, checkOutput( 0, "", "", "")) ;
+
+ # replace the filters, but remember the previous set
+ my ($old_fk) = $db->filter_fetch_key
+ (sub { ++ $_ ; $fetch_key = $_ }) ;
+ my ($old_sk) = $db->filter_store_key
+ (sub { $_ *= 2 ; $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 ;
+ $h[1] = "Joe" ;
+ # fk sk fv sv
+ ok(85, checkOutput( "", 2, "", "Jxe")) ;
+
+ ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
+ ok(86, $h[1] eq "[Jxe]");
+ # fk sk fv sv
+ ok(87, checkOutput( "", 2, "[Jxe]", "")) ;
+
+ ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
+ ok(88, $db->FIRSTKEY() == 1) ;
+ # fk sk fv sv
+ ok(89, checkOutput( 1, "", "", "")) ;
+
+ # 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 ;
+ $h[0] = "joe" ;
+ ok(90, checkOutput( "", 0, "", "joe")) ;
+
+ ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
+ ok(91, $h[0] eq "joe");
+ ok(92, checkOutput( "", 0, "joe", "")) ;
+
+ ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
+ ok(93, $db->FIRSTKEY() == 0) ;
+ ok(94, checkOutput( 0, "", "", "")) ;
+
+ # 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 ;
+ $h[0] = "joe" ;
+ ok(95, checkOutput( "", "", "", "")) ;
+
+ ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
+ ok(96, $h[0] eq "joe");
+ ok(97, checkOutput( "", "", "", "")) ;
+
+ ($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
+ ok(98, $db->FIRSTKEY() == 0) ;
+ ok(99, checkOutput( "", "", "", "")) ;
+
+ undef $db ;
+ untie @h;
+ unlink $Dfile;
+}
+
+{
+ # DBM Filter with a closure
+
+ use warnings ;
+ use strict ;
+ my (@h, $db) ;
+
+ unlink $Dfile;
+ ok(100, $db = tie(@h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $DB_RECNO ) );
+
+ my %result = () ;
+
+ sub Closure
+ {
+ my ($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[0] = "joe" ;
+ ok(101, $result{"store key"} eq "store key - 1: [0]");
+ ok(102, $result{"store value"} eq "store value - 1: [joe]");
+ ok(103, ! defined $result{"fetch key"} );
+ ok(104, ! defined $result{"fetch value"} );
+ ok(105, $_ eq "original") ;
+
+ ok(106, $db->FIRSTKEY() == 0 ) ;
+ ok(107, $result{"store key"} eq "store key - 1: [0]");
+ ok(108, $result{"store value"} eq "store value - 1: [joe]");
+ ok(109, $result{"fetch key"} eq "fetch key - 1: [0]");
+ ok(110, ! defined $result{"fetch value"} );
+ ok(111, $_ eq "original") ;
+
+ $h[7] = "john" ;
+ ok(112, $result{"store key"} eq "store key - 2: [0 7]");
+ ok(113, $result{"store value"} eq "store value - 2: [joe john]");
+ ok(114, $result{"fetch key"} eq "fetch key - 1: [0]");
+ ok(115, ! defined $result{"fetch value"} );
+ ok(116, $_ eq "original") ;
+
+ ok(117, $h[0] eq "joe");
+ ok(118, $result{"store key"} eq "store key - 3: [0 7 0]");
+ ok(119, $result{"store value"} eq "store value - 2: [joe john]");
+ ok(120, $result{"fetch key"} eq "fetch key - 1: [0]");
+ ok(121, $result{"fetch value"} eq "fetch value - 1: [joe]");
+ ok(122, $_ eq "original") ;
+
+ undef $db ;
+ untie @h;
+ unlink $Dfile;
+}
+
+{
+ # DBM Filter recursion detection
+ use warnings ;
+ use strict ;
+ my (@h, $db) ;
+ unlink $Dfile;
+
+ ok(123, $db = tie(@h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $DB_RECNO ) );
+
+ $db->filter_store_key (sub { $_ = $h[0] }) ;
+
+ eval '$h[1] = 1234' ;
+ ok(124, $@ =~ /^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 ;
+
+ my $filename = "text" ;
+ unlink $filename ;
+
+ my @h ;
+ my $x = tie @h, "DB_File", $filename, O_RDWR|O_CREAT, 0640, $DB_RECNO
+ or die "Cannot open file 'text': $!\n" ;
+
+ # Add a few key/value pairs to the file
+ $h[0] = "orange" ;
+ $h[1] = "blue" ;
+ $h[2] = "yellow" ;
+
+ $FA ? push @h, "green", "black"
+ : $x->push("green", "black") ;
+
+ my $elements = $FA ? scalar @h : $x->length ;
+ print "The array contains $elements entries\n" ;
+
+ my $last = $FA ? pop @h : $x->pop ;
+ print "popped $last\n" ;
+
+ $FA ? unshift @h, "white"
+ : $x->unshift("white") ;
+ my $first = $FA ? shift @h : $x->shift ;
+ print "shifted $first\n" ;
+
+ # Check for existence of a key
+ print "Element 1 Exists with value $h[1]\n" if $h[1] ;
+
+ # use a negative index
+ print "The last element is $h[-1]\n" ;
+ print "The 2nd last element is $h[-2]\n" ;
+
+ undef $x ;
+ untie @h ;
+
+ unlink $filename ;
+ }
+
+ ok(125, docat_del($file) eq <<'EOM') ;
+The array contains 5 entries
+popped black
+shifted white
+Element 1 Exists with value blue
+The last element is green
+The 2nd last element is yellow
+EOM
+
+ my $save_output = "xyzt" ;
+ {
+ my $redirect = new Redirect $save_output ;
+
+ use warnings FATAL => qw(all);
+ use strict ;
+ use vars qw(@h $H $file $i) ;
+ use DB_File ;
+ use Fcntl ;
+
+ $file = "text" ;
+
+ unlink $file ;
+
+ $H = tie @h, "DB_File", $file, O_RDWR|O_CREAT, 0640, $DB_RECNO
+ or die "Cannot open file $file: $!\n" ;
+
+ # first create a text file to play with
+ $h[0] = "zero" ;
+ $h[1] = "one" ;
+ $h[2] = "two" ;
+ $h[3] = "three" ;
+ $h[4] = "four" ;
+
+
+ # Print the records in order.
+ #
+ # The length method is needed here because evaluating a tied
+ # array in a scalar context does not return the number of
+ # elements in the array.
+
+ print "\nORIGINAL\n" ;
+ foreach $i (0 .. $H->length - 1) {
+ print "$i: $h[$i]\n" ;
+ }
+
+ # use the push & pop methods
+ $a = $H->pop ;
+ $H->push("last") ;
+ print "\nThe last record was [$a]\n" ;
+
+ # and the shift & unshift methods
+ $a = $H->shift ;
+ $H->unshift("first") ;
+ print "The first record was [$a]\n" ;
+
+ # Use the API to add a new record after record 2.
+ $i = 2 ;
+ $H->put($i, "Newbie", R_IAFTER) ;
+
+ # and a new record before record 1.
+ $i = 1 ;
+ $H->put($i, "New One", R_IBEFORE) ;
+
+ # delete record 3
+ $H->del(3) ;
+
+ # now print the records in reverse order
+ print "\nREVERSE\n" ;
+ for ($i = $H->length - 1 ; $i >= 0 ; -- $i)
+ { print "$i: $h[$i]\n" }
+
+ # same again, but use the API functions instead
+ print "\nREVERSE again\n" ;
+ my ($s, $k, $v) = (0, 0, 0) ;
+ for ($s = $H->seq($k, $v, R_LAST) ;
+ $s == 0 ;
+ $s = $H->seq($k, $v, R_PREV))
+ { print "$k: $v\n" }
+
+ undef $H ;
+ untie @h ;
+
+ unlink $file ;
+ }
+
+ ok(126, docat_del($save_output) eq <<'EOM') ;
+
+ORIGINAL
+0: zero
+1: one
+2: two
+3: three
+4: four
+
+The last record was [four]
+The first record was [zero]
+
+REVERSE
+5: last
+4: three
+3: Newbie
+2: one
+1: New One
+0: first
+
+REVERSE again
+5: last
+4: three
+3: Newbie
+2: one
+1: New One
+0: first
+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, O_RDWR|O_CREAT, 0664, $DB_RECNO
+ or die "Can't open file: $!\n" ;
+ $h[0] = undef;
+ ok(127, $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 ;
+ my $a = "";
+ local $SIG{__WARN__} = sub {$a = $_[0]} ;
+
+ unlink $Dfile;
+ my @h ;
+
+ tie @h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0664, $DB_RECNO
+ or die "Can't open file: $!\n" ;
+ @h = (); ;
+ ok(128, $a eq "") ;
+ untie @h ;
+ unlink $Dfile;
+}
+
exit ;