#!./perl -w
BEGIN {
unless(grep /blib/, @INC) {
chdir 't' if -d 't';
@INC = '../lib' if -d '../lib';
}
}
use warnings;
use strict;
use Config;
BEGIN {
if(-d "lib" && -f "TEST") {
if ($Config{'extensions'} !~ /\bDB_File\b/ ) {
print "1..0 # Skip: DB_File was not built\n";
exit 0;
}
}
}
use DB_File;
use Fcntl;
our ($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 $result = <CAT>;
close(CAT);
normalise($result) ;
return $result;
}
sub docat_del
{
my $file = shift;
my $result = docat($file);
unlink $file ;
return $result;
}
sub bad_one
{
unless ($bad_ones++) {
print STDERR <<EOM ;
#
# Some older versions of Berkeley DB version 1 will fail db-recno
# tests 61, 63 and 65.
EOM
if ($^O eq 'darwin'
&& $Config{db_version_major} == 1
&& $Config{db_version_minor} == 0
&& $Config{db_version_patch} == 0) {
print STDERR <<EOM ;
#
# For example Mac OS X 10.1.5 (or earlier) has such an old
# version of Berkeley DB.
EOM
}
print STDERR <<EOM ;
#
# 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
}
}
sub normalise
{
return unless $^O eq 'cygwin' ;
foreach (@_)
{ s#\r\n#\n#g }
}
BEGIN
{
{
local $SIG{__DIE__} ;
eval { require Data::Dumper ; import Data::Dumper } ;
}
if ($@) {
*Dumper = sub { my $a = shift; return "[ @{ $a } ]" } ;
}
}
my $splice_tests = 10 + 11 + 1; # ten regressions, 11 warnings, plus the randoms
my $total_tests = 138 ;
$total_tests += $splice_tests if $FA ;
print "1..$total_tests\n";
$Dfile = "recno.tmp";
unlink $Dfile ;
umask(0);
# Check the interface to RECNOINFO
$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 ) ;
my %noMode = map { $_, 1} qw( amigaos MSWin32 NetWare cygwin ) ;
ok(18, ((stat($Dfile))[2] & 0777) == (($^O eq 'os2' || $^O eq 'MacOS') ? 0666 : 0640)
|| $noMode{$^O} );
#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 $data[8]) ;
# Brief test for SPLICE - more thorough 'soak test' is later.
my @old;
if ($FA) {
@old = splice(@h, 1, 2, qw(bananas just before));
}
else {
@old = $X->splice(1, 2, qw(bananas just before));
}
ok(42, $h[0] eq "add") ;
ok(43, $h[1] eq "bananas") ;
ok(44, $h[2] eq "just") ;
ok(45, $h[3] eq "before") ;
ok(46, $h[4] eq "the") ;
ok(47, $h[5] eq "start") ;
ok(48, $h[6] eq "of") ;
ok(49, $h[7] eq "the") ;
ok(50, $h[8] eq "array") ;
ok(51, $h[9] eq $data[8]) ;
$FA ? splice(@h, 1, 3, @old) : $X->splice(1, 3, @old);
# Now both arrays should be identical
my $ok = 1 ;
my $j = 0 ;
foreach (@data)
{
$ok = 0, last if $_ ne $h[$j ++] ;
}
ok(52, $ok );
# Neagtive subscripts
# get the last element of the array
ok(53, $h[-1] eq $data[-1] );
ok(54, $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(55, $@ eq "" );
ok(56, $h[0] eq "abcd" );
# now try to read before the start of the array
eval '$h[ - (1 + ($FA ? @h : $X->length))] = 1234' ;
ok(57, $@ =~ '^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(58, 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(59, $x eq "abc\ndef\n\nghi\n") ;
}
{
# Change bval
my @h = () ;
my $dbh = new DB_File::RECNOINFO ;
$dbh->{bval} = "-" ;
ok(60, 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(61, $ok) ;
}
{
# Check R_FIXEDLEN with default bval (space)
my @h = () ;
my $dbh = new DB_File::RECNOINFO ;
$dbh->{flags} = R_FIXEDLEN ;
$dbh->{reclen} = 5 ;
ok(62, 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(63, $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(64, 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(65, $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(66, $@ =~ /^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 ;
our (@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 or die "Could not close: $!";
BEGIN { push @INC, '.'; }
eval 'use SubDB ; ';
main::ok(67, $@ eq "") ;
my @h ;
my $X ;
eval '
$X = tie(@h, "SubDB","recno.tmp", O_RDWR|O_CREAT, 0640, $DB_RECNO );
' ;
die "Could not tie: $!" unless $X;
main::ok(68, $@ eq "") ;
my $ret = eval '$h[3] = 3 ; return $h[3] ' ;
main::ok(69, $@ eq "") ;
main::ok(70, $ret == 5) ;
my $value = 0;
$ret = eval '$X->put(1, 4) ; $X->get(1, $value) ; return $value' ;
main::ok(71, $@ eq "") ;
main::ok(72, $ret == 10) ;
$ret = eval ' R_NEXT eq main::R_NEXT ' ;
main::ok(73, $@ eq "" ) ;
main::ok(74, $ret == 1) ;
$ret = eval '$X->A_new_method(1) ' ;
main::ok(75, $@ eq "") ;
main::ok(76, $ret eq "[[11]]") ;
undef $X;
untie(@h);
unlink "SubDB.pm", "recno.tmp" ;
}
{
# test $#
my $self ;
unlink $Dfile;
ok(77, $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(78, $FA ? $#h == 3 : $self->length() == 4) ;
undef $self ;
untie @h ;
my $x = docat($Dfile) ;
ok(79, $x eq "abc\ndef\nghi\njkl\n") ;
# $# sets array to same length
ok(80, $self = tie @h, 'DB_File', $Dfile, O_RDWR, 0640, $DB_RECNO ) ;
if ($FA)
{ $#h = 3 }
else
{ $self->STORESIZE(4) }
ok(81, $FA ? $#h == 3 : $self->length() == 4) ;
undef $self ;
untie @h ;
$x = docat($Dfile) ;
ok(82, $x eq "abc\ndef\nghi\njkl\n") ;
# $# sets array to bigger
ok(83, $self = tie @h, 'DB_File', $Dfile, O_RDWR, 0640, $DB_RECNO ) ;
if ($FA)
{ $#h = 6 }
else
{ $self->STORESIZE(7) }
ok(84, $FA ? $#h == 6 : $self->length() == 7) ;
undef $self ;
untie @h ;
$x = docat($Dfile) ;
ok(85, $x eq "abc\ndef\nghi\njkl\n\n\n\n") ;
# $# sets array smaller
ok(86, $self = tie @h, 'DB_File', $Dfile, O_RDWR, 0640, $DB_RECNO ) ;
if ($FA)
{ $#h = 2 }
else
{ $self->STORESIZE(3) }
ok(87, $FA ? $#h == 2 : $self->length() == 3) ;
undef $self ;
untie @h ;
$x = docat($Dfile) ;
ok(88, $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(89, $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" ;
$h[0] = "joe" ;
# fk sk fv sv
ok(90, checkOutput( "", 0, "", "joe")) ;
($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
ok(91, $h[0] eq "joe");
# fk sk fv sv
ok(92, checkOutput( "", 0, "joe", "")) ;
($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
ok(93, $db->FIRSTKEY() == 0) ;
# fk sk fv sv
ok(94, checkOutput( 0, "", "", "")) ;
# replace the filters, but remember the previous set
my ($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 ;
$h[1] = "Joe" ;
# fk sk fv sv
ok(95, checkOutput( "", 2, "", "Jxe")) ;
($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
ok(96, $h[1] eq "[Jxe]");
# fk sk fv sv
ok(97, checkOutput( "", 2, "[Jxe]", "")) ;
($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
ok(98, $db->FIRSTKEY() == 1) ;
# fk sk fv sv
ok(99, 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 ;
$h[0] = "joe" ;
ok(100, checkOutput( "", 0, "", "joe")) ;
($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
ok(101, $h[0] eq "joe");
ok(102, checkOutput( "", 0, "joe", "")) ;
($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
ok(103, $db->FIRSTKEY() == 0) ;
ok(104, 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 ;
$h[0] = "joe" ;
ok(105, checkOutput( "", "", "", "")) ;
($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
ok(106, $h[0] eq "joe");
ok(107, checkOutput( "", "", "", "")) ;
($fetch_key, $store_key, $fetch_value, $store_value) = ("") x 4 ;
ok(108, $db->FIRSTKEY() == 0) ;
ok(109, checkOutput( "", "", "", "")) ;
undef $db ;
untie @h;
unlink $Dfile;
}
{
# DBM Filter with a closure
use warnings ;
use strict ;
my (@h, $db) ;
unlink $Dfile;
ok(110, $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(111, $result{"store key"} eq "store key - 1: [0]");
ok(112, $result{"store value"} eq "store value - 1: [joe]");
ok(113, ! defined $result{"fetch key"} );
ok(114, ! defined $result{"fetch value"} );
ok(115, $_ eq "original") ;
ok(116, $db->FIRSTKEY() == 0 ) ;
ok(117, $result{"store key"} eq "store key - 1: [0]");
ok(118, $result{"store value"} eq "store value - 1: [joe]");
ok(119, $result{"fetch key"} eq "fetch key - 1: [0]");
ok(120, ! defined $result{"fetch value"} );
ok(121, $_ eq "original") ;
$h[7] = "john" ;
ok(122, $result{"store key"} eq "store key - 2: [0 7]");
ok(123, $result{"store value"} eq "store value - 2: [joe john]");
ok(124, $result{"fetch key"} eq "fetch key - 1: [0]");
ok(125, ! defined $result{"fetch value"} );
ok(126, $_ eq "original") ;
ok(127, $h[0] eq "joe");
ok(128, $result{"store key"} eq "store key - 3: [0 7 0]");
ok(129, $result{"store value"} eq "store value - 2: [joe john]");
ok(130, $result{"fetch key"} eq "fetch key - 1: [0]");
ok(131, $result{"fetch value"} eq "fetch value - 1: [joe]");
ok(132, $_ eq "original") ;
undef $db ;
untie @h;
unlink $Dfile;
}
{
# DBM Filter recursion detection
use warnings ;
use strict ;
my (@h, $db) ;
unlink $Dfile;
ok(133, $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(134, $@ =~ /^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 $filename ;
}
ok(135, docat_del($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 ;
our (@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 $file ;
}
ok(136, docat_del($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(137, $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(138, $a eq "") ;
untie @h ;
unlink $Dfile;
}
# Only test splice if this is a newish version of Perl
exit unless $FA ;
# Test SPLICE
{
# check that the splice warnings are under the same lexical control
# as their non-tied counterparts.
use warnings;
use strict;
my $a = '';
my @a = (1);
local $SIG{__WARN__} = sub {$a = $_[0]} ;
unlink $Dfile;
my @tied ;
tie @tied, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0664, $DB_RECNO
or die "Can't open file: $!\n" ;
# uninitialized offset
use warnings;
my $offset ;
$a = '';
splice(@a, $offset);
ok(139, $a =~ /^Use of uninitialized value /);
$a = '';
splice(@tied, $offset);
ok(140, $a =~ /^Use of uninitialized value in splice/);
no warnings 'uninitialized';
$a = '';
splice(@a, $offset);
ok(141, $a eq '');
$a = '';
splice(@tied, $offset);
ok(142, $a eq '');
# uninitialized length
use warnings;
my $length ;
$a = '';
splice(@a, 0, $length);
ok(143, $a =~ /^Use of uninitialized value /);
$a = '';
splice(@tied, 0, $length);
ok(144, $a =~ /^Use of uninitialized value in splice/);
no warnings 'uninitialized';
$a = '';
splice(@a, 0, $length);
ok(145, $a eq '');
$a = '';
splice(@tied, 0, $length);
ok(146, $a eq '');
# offset past end of array
use warnings;
$a = '';
splice(@a, 3);
my $splice_end_array = ($a =~ /^splice\(\) offset past end of array/);
$a = '';
splice(@tied, 3);
ok(147, !$splice_end_array || $a =~ /^splice\(\) offset past end of array/);
no warnings 'misc';
$a = '';
splice(@a, 3);
ok(148, $a eq '');
$a = '';
splice(@tied, 3);
ok(149, $a eq '');
untie @tied;
unlink $Dfile;
}
#
# These are a few regression tests: bundles of five arguments to pass
# to test_splice(). The first four arguments correspond to those
# given to splice(), and the last says which context to call it in
# (scalar, list or void).
#
# The expected result is not needed because we get that by running
# Perl's built-in splice().
#
my @tests = ([ [ 'falsely', 'dinosaur', 'remedy', 'commotion',
'rarely', 'paleness' ],
-4, -2,
[ 'redoubled', 'Taylorize', 'Zoe', 'halogen' ],
'void' ],
[ [ 'a' ], -2, 1, [ 'B' ], 'void' ],
[ [ 'Hartley', 'Islandia', 'assents', 'wishful' ],
0, -4,
[ 'maids' ],
'void' ],
[ [ 'visibility', 'pocketful', 'rectangles' ],
-10, 0,
[ 'garbages' ],
'void' ],
[ [ 'sleeplessly' ],
8, -4,
[ 'Margery', 'clearing', 'repercussion', 'clubs',
'arise' ],
'void' ],
[ [ 'chastises', 'recalculates' ],
0, 0,
[ 'momentariness', 'mediates', 'accents', 'toils',
'regaled' ],
'void' ],
[ [ 'b', '' ],
9, 8,
[ 'otrb', 'stje', 'ixrpw', 'vxfx', 'lhhf' ],
'scalar' ],
[ [ 'b', '' ],
undef, undef,
[ 'otrb', 'stje', 'ixrpw', 'vxfx', 'lhhf' ],
'scalar' ],
[ [ 'riheb' ], -8, undef, [], 'void' ],
[ [ 'uft', 'qnxs', '' ],
6, -2,
[ 'znp', 'mhnkh', 'bn' ],
'void' ],
);
my $testnum = 150;
my $failed = 0;
require POSIX; my $tmp = POSIX::tmpnam();
foreach my $test (@tests) {
my $err = test_splice(@$test);
if (defined $err) {
print STDERR "# failed: ", Dumper($test);
print STDERR "# error: $err\n";
$failed = 1;
ok($testnum++, 0);
}
else { ok($testnum++, 1) }
}
if ($failed) {
# Not worth running the random ones
print STDERR '# skipping ', $testnum++, "\n";
}
else {
# A thousand randomly-generated tests
$failed = 0;
srand(0);
foreach (0 .. 1000 - 1) {
my $test = rand_test();
my $err = test_splice(@$test);
if (defined $err) {
print STDERR "# failed: ", Dumper($test);
print STDERR "# error: $err\n";
$failed = 1;
print STDERR "# skipping any remaining random tests\n";
last;
}
}
ok($testnum++, not $failed);
}
die if $testnum != $total_tests + 1;
exit ;
# Subroutines for SPLICE testing
# test_splice()
#
# Test the new splice() against Perl's built-in one. The first four
# parameters are those passed to splice(), except that the lists must
# be (explicitly) passed by reference, and are not actually modified.
# (It's just a test!) The last argument specifies the context in
# which to call the functions: 'list', 'scalar', or 'void'.
#
# Returns:
# undef, if the two splices give the same results for the given
# arguments and context;
#
# an error message showing the difference, otherwise.
#
# Reads global variable $tmp.
#
sub test_splice {
die 'usage: test_splice(array, offset, length, list, context)' if @_ != 5;
my ($array, $offset, $length, $list, $context) = @_;
my @array = @$array;
my @list = @$list;
unlink $tmp;
my @h;
my $H = tie @h, 'DB_File', $tmp, O_CREAT|O_RDWR, 0644, $DB_RECNO
or die "cannot open $tmp: $!";
my $i = 0;
foreach ( @array ) { $h[$i++] = $_ }
return "basic DB_File sanity check failed"
if list_diff(\@array, \@h);
# Output from splice():
# Returned value (munged a bit), error msg, warnings
#
my ($s_r, $s_error, @s_warnings);
my $gather_warning = sub { push @s_warnings, $_[0] };
if ($context eq 'list') {
my @r;
eval {
local $SIG{__WARN__} = $gather_warning;
@r = splice @array, $offset, $length, @list;
};
$s_error = $@;
$s_r = \@r;
}
elsif ($context eq 'scalar') {
my $r;
eval {
local $SIG{__WARN__} = $gather_warning;
$r = splice @array, $offset, $length, @list;
};
$s_error = $@;
$s_r = [ $r ];
}
elsif ($context eq 'void') {
eval {
local $SIG{__WARN__} = $gather_warning;
splice @array, $offset, $length, @list;
};
$s_error = $@;
$s_r = [];
}
else {
die "bad context $context";
}
foreach ($s_error, @s_warnings) {
chomp;
s/ at \S+ line \d+\.$//;
}
# Now do the same for DB_File's version of splice
my ($ms_r, $ms_error, @ms_warnings);
$gather_warning = sub { push @ms_warnings, $_[0] };
if ($context eq 'list') {
my @r;
eval {
local $SIG{__WARN__} = $gather_warning;
@r = splice @h, $offset, $length, @list;
};
$ms_error = $@;
$ms_r = \@r;
}
elsif ($context eq 'scalar') {
my $r;
eval {
local $SIG{__WARN__} = $gather_warning;
$r = splice @h, $offset, $length, @list;
};
$ms_error = $@;
$ms_r = [ $r ];
}
elsif ($context eq 'void') {
eval {
local $SIG{__WARN__} = $gather_warning;
splice @h, $offset, $length, @list;
};
$ms_error = $@;
$ms_r = [];
}
else {
die "bad context $context";
}
foreach ($ms_error, @ms_warnings) {
chomp;
s/ at \S+ line \d+\.?.*//s;
}
return "different errors: '$s_error' vs '$ms_error'"
if $s_error ne $ms_error;
return('different return values: ' . Dumper($s_r) . ' vs ' . Dumper($ms_r))
if list_diff($s_r, $ms_r);
return('different changed list: ' . Dumper(\@array) . ' vs ' . Dumper(\@h))
if list_diff(\@array, \@h);
if ((scalar @s_warnings) != (scalar @ms_warnings)) {
return 'different number of warnings';
}
while (@s_warnings) {
my $sw = shift @s_warnings;
my $msw = shift @ms_warnings;
if (defined $sw and defined $msw) {
$msw =~ s/ \(.+\)$//;
$msw =~ s/ in splice$// if $] < 5.006;
if ($sw ne $msw) {
return "different warning: '$sw' vs '$msw'";
}
}
elsif (not defined $sw and not defined $msw) {
# Okay.
}
else {
return "one warning defined, another undef";
}
}
undef $H;
untie @h;
open(TEXT, $tmp) or die "cannot open $tmp: $!";
@h = <TEXT>; normalise @h; chomp @h;
close TEXT or die "cannot close $tmp: $!";
return('list is different when re-read from disk: '
. Dumper(\@array) . ' vs ' . Dumper(\@h))
if list_diff(\@array, \@h);
return undef; # success
}
# list_diff()
#
# Do two lists differ?
#
# Parameters:
# reference to first list
# reference to second list
#
# Returns true iff they differ. Only works for lists of (string or
# undef).
#
# Surely there is a better way to do this?
#
sub list_diff {
die 'usage: list_diff(ref to first list, ref to second list)'
if @_ != 2;
my ($a, $b) = @_;
my @a = @$a; my @b = @$b;
return 1 if (scalar @a) != (scalar @b);
for (my $i = 0; $i < @a; $i++) {
my ($ae, $be) = ($a[$i], $b[$i]);
if (defined $ae and defined $be) {
return 1 if $ae ne $be;
}
elsif (not defined $ae and not defined $be) {
# Two undefined values are 'equal'
}
else {
return 1;
}
}
return 0;
}
# rand_test()
#
# Think up a random ARRAY, OFFSET, LENGTH, LIST, and context.
# ARRAY or LIST might be empty, and OFFSET or LENGTH might be
# undefined. Return a 'test' - a listref of these five things.
#
sub rand_test {
die 'usage: rand_test()' if @_;
my @contexts = qw<list scalar void>;
my $context = $contexts[int(rand @contexts)];
return [ rand_list(),
(rand() < 0.5) ? (int(rand(20)) - 10) : undef,
(rand() < 0.5) ? (int(rand(20)) - 10) : undef,
rand_list(),
$context ];
}
sub rand_list {
die 'usage: rand_list()' if @_;
my @r;
while (rand() > 0.1 * (scalar @r + 1)) {
push @r, rand_word();
}
return \@r;
}
sub rand_word {
die 'usage: rand_word()' if @_;
my $r = '';
my @chars = qw<a b c d e f g h i j k l m n o p q r s t u v w x y z>;
while (rand() > 0.1 * (length($r) + 1)) {
$r .= $chars[int(rand(scalar @chars))];
}
return $r;
}
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