diff options
Diffstat (limited to 'ext/DB_File/t/db-recno.t')
| -rwxr-xr-x | ext/DB_File/t/db-recno.t | 889 |
1 files changed, 889 insertions, 0 deletions
diff --git a/ext/DB_File/t/db-recno.t b/ext/DB_File/t/db-recno.t new file mode 100755 index 0000000000..6dd913cfc2 --- /dev/null +++ b/ext/DB_File/t/db-recno.t @@ -0,0 +1,889 @@ +#!./perl -w + +BEGIN { + @INC = '../lib'; + require Config; import Config; + if ($Config{'extensions'} !~ /\bDB_File\b/) { + print "1..0 # Skip: DB_File was not built\n"; + exit 0; + } +} + +use DB_File; +use Fcntl; +use strict ; +use warnings; +use vars qw($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 +{ + my $no = shift ; + my $result = shift ; + + 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..128\n"; + +my $Dfile = "recno.tmp"; +unlink $Dfile ; + +umask(0); + +# Check the interface to RECNOINFO + +my $dbh = new DB_File::RECNOINFO ; +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, $dbh->{bval} == 3000 ); + +$dbh->{cachesize} = 9000 ; +ok(9, $dbh->{cachesize} == 9000 ); + +$dbh->{psize} = 400 ; +ok(10, $dbh->{psize} == 400 ); + +$dbh->{flags} = 65 ; +ok(11, $dbh->{flags} == 65 ); + +$dbh->{lorder} = 123 ; +ok(12, $dbh->{lorder} == 123 ); + +$dbh->{reclen} = 1234 ; +ok(13, $dbh->{reclen} == 1234 ); + +$dbh->{bfname} = 1234 ; +ok(14, $dbh->{bfname} == 1234 ); + + +# Check that an invalid entry is caught both for store & fetch +eval '$dbh->{fred} = 1234' ; +ok(15, $@ =~ /^DB_File::RECNOINFO::STORE - Unknown element 'fred' at/ ); +eval 'my $q = $dbh->{fred}' ; +ok(16, $@ =~ /^DB_File::RECNOINFO::FETCH - Unknown element 'fred' at/ ); + +# Now check the interface to RECNOINFO + +my $X ; +my @h ; +ok(17, $X = tie @h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $DB_RECNO ) ; + +ok(18, ((stat($Dfile))[2] & 0777) == ($^O eq 'os2' ? 0666 : 0640) + || $^O eq 'MSWin32' || $^O eq 'NetWare' || $^O eq 'amigaos') ; + +#my $l = @h ; +my $l = $X->length ; +ok(19, ($FA ? @h == 0 : !$l) ); + +my @data = qw( a b c d ever f g h i j k longername m n o p) ; + +$h[0] = shift @data ; +ok(20, $h[0] eq 'a' ); + +my $ i; +foreach (@data) + { $h[++$i] = $_ } + +unshift (@data, 'a') ; + +ok(21, defined $h[1] ); +ok(22, ! defined $h[16] ); +ok(23, $FA ? @h == @data : $X->length == @data ); + + +# Overwrite an entry & check fetch it +$h[3] = 'replaced' ; +$data[3] = 'replaced' ; +ok(24, $h[3] eq 'replaced' ); + +#PUSH +my @push_data = qw(added to the end) ; +($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' ); +ok(27, $h[++$i] eq 'the' ); +ok(28, $h[++$i] eq 'end' ); + +# POP +my $popped = pop (@data) ; +my $value = ($FA ? pop @h : $X->pop) ; +ok(29, $value eq $popped) ; + +# SHIFT +$value = ($FA ? shift @h : $X->shift) ; +my $shifted = shift @data ; +ok(30, $value eq $shifted ); + +# UNSHIFT + +# empty list +($FA ? unshift @h,() : $X->unshift) ; +ok(31, ($FA ? @h == @data : $X->length == @data )); + +my @new_data = qw(add this to the start of the array) ; +$FA ? unshift (@h, @new_data) : $X->unshift (@new_data) ; +unshift (@data, @new_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") ; +ok(36, $h[3] eq "the") ; +ok(37, $h[4] eq "start") ; +ok(38, $h[5] eq "of") ; +ok(39, $h[6] eq "the") ; +ok(40, $h[7] eq "array") ; +ok(41, $h[8] eq $data[8]) ; + +# SPLICE + +# Now both arrays should be identical + +my $ok = 1 ; +my $j = 0 ; +foreach (@data) +{ + $ok = 0, last if $_ ne $h[$j ++] ; +} +ok(42, $ok ); + +# Neagtive subscripts + +# get the last element of the array +ok(43, $h[-1] eq $data[-1] ); +ok(44, $h[-1] eq $h[ ($FA ? @h : $X->length) -1] ); + +# get the first element using a negative subscript +eval '$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 + ($FA ? @h : $X->length))] = 1234' ; +ok(47, $@ =~ '^Modification of non-creatable array value attempted' ); + +# IMPORTANT - $X must be undefined before the untie otherwise the +# underlying DB close routine will not get called. +undef $X ; +untie(@h); + +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 ; |