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

#!./perl

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

use DB_File; 
use Fcntl;
use strict ;
use vars qw($dbh $Dfile) ;

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

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

print "1..35\n";

my $Dfile = "recno.tmp";
unlink $Dfile ;

umask(0);

# Check the interface to RECNOINFO

my $dbh = new DB_File::RECNOINFO ;
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);

$dbh->{bval} = 3000 ;
print ($dbh->{bval} == 3000 ? "ok 8\n" : "not ok 8\n") ;

$dbh->{cachesize} = 9000 ;
print ($dbh->{cachesize} == 9000 ? "ok 9\n" : "not ok 9\n") ;

$dbh->{psize} = 400 ;
print (($dbh->{psize} == 400) ? "ok 10\n" : "not ok 10\n") ;

$dbh->{flags} = 65 ;
print (($dbh->{flags} == 65) ? "ok 11\n" : "not ok 11\n") ;

$dbh->{lorder} = 123 ;
print (($dbh->{lorder} == 123) ? "ok 12\n" : "not ok 12\n") ;

$dbh->{reclen} = 1234 ;
print ($dbh->{reclen} == 1234 ? "ok 13\n" : "not ok 13\n") ;

$dbh->{bfname} = 1234 ;
print ($dbh->{bfname} == 1234 ? "ok 14\n" : "not ok 14\n") ;


# Check that an invalid entry is caught both for store & fetch
eval '$dbh->{fred} = 1234' ;
print ($@ =~ /^DB_File::RECNOINFO::STORE - Unknown element 'fred' at/ ? "ok 15\n" : "not ok 15\n") ;
eval 'my $q = $dbh->{fred}' ;
print ($@ =~ /^DB_File::RECNOINFO::FETCH - Unknown element 'fred' at/ ? "ok 16\n" : "not ok 16\n") ;

# Now check the interface to RECNOINFO

my $X  ;
my @h ;
ok(17, $X = tie @h, 'DB_File', $Dfile, O_RDWR|O_CREAT, 0640, $DB_RECNO ) ;
#print (($X = tie(%h, DB_File,$Dfile, O_RDWR|O_CREAT, 0640, $DB_BTREE )) ? "ok 19\n" : "not ok 19");

ok(18, ( (stat($Dfile))[2] & 0777) == 0640) ;

#my $l = @h ;
my $l = $X->length ;
print (!$l ? "ok 19\n" : "not ok 19\n");

my @data = qw( a b c d ever f g h  i j k longername m n o p) ;

$h[0] = shift @data ;
print ($h[0] eq 'a' ? "ok 20\n" : "not ok 20\n") ;

my $ i;
foreach (@data)
  { $h[++$i] = $_ }

unshift (@data, 'a') ;

print (defined $h[1] ? "ok 21\n" : "not ok 21\n");
print (! defined $h[16] ? "ok 22\n" : "not ok 22\n");
print ($X->length == @data ? "ok 23\n" : "not ok 23\n") ;


# Overwrite an entry & check fetch it
$h[3] = 'replaced' ;
$data[3] = 'replaced' ;
print ($h[3] eq 'replaced' ? "ok 24\n" : "not ok 24\n");

#PUSH
my @push_data = qw(added to the end) ;
#push (@h, @push_data) ;
$X->push(@push_data) ;
push (@data, @push_data) ;
print ($h[++$i] eq 'added' ? "ok 25\n" : "not ok 25\n");

# POP
pop (@data) ;
#$value = pop(@h) ;
my $value = $X->pop ;
print ($value eq 'end' ? "not ok 26\n" : "ok 26\n");

# SHIFT
#$value = shift @h
$value = $X->shift ;
print ($value eq shift @data ? "not ok 27\n" : "ok 27\n");

# UNSHIFT

# empty list
$X->unshift ;
print ($X->length == @data ? "ok 28\n" : "not ok 28\n") ;

my @new_data = qw(add this to the start of the array) ;
#unshift @h, @new_data ;
$X->unshift (@new_data) ;
unshift (@data, @new_data) ;
print ($X->length == @data ? "ok 29\n" : "not ok 29\n") ;

# SPLICE

# Now both arrays should be identical

my $ok = 1 ;
my $j = 0 ;
foreach (@data)
{
   $ok = 0, last if $_ ne $h[$j ++] ; 
}
print ($ok ? "ok 30\n" : "not ok 30\n") ;

# Neagtive subscripts

# get the last element of the array
print($h[-1] eq $data[-1] ? "ok 31\n" : "not ok 31\n") ;
print($h[-1] eq $h[$X->length -1] ? "ok 32\n" : "not ok 32\n") ;

# get the first element using a negative subscript
eval '$h[ - ( $X->length)] = "abcd"' ;
print ($@ eq "" ? "ok 33\n" : "not ok 33\n") ;
print ($h[0] eq "abcd" ? "ok 34\n" : "not ok 34\n") ;

# now try to read before the start of the array
eval '$h[ - (1 + $X->length)] = 1234' ;
print ($@ =~ '^Modification of non-creatable array value attempted' ? "ok 35\n" : "not ok 35\n") ;

# IMPORTANT - $X must be undefined before the untie otherwise the
#             underlying DB close routine will not get called.
undef $X ;
untie(@h);

unlink $Dfile;

exit ;