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#!perl -w
use strict;
use warnings;
use Test::More tests => 13;
use File::Temp 'tempfile';
{
package LenDigest;
require Digest::base;
our @ISA = qw(Digest::base);
sub new {
my $class = shift;
my $str = "";
bless \$str, $class;
}
sub add {
my $self = shift;
$$self .= join( "", @_ );
return $self;
}
sub digest {
my $self = shift;
my $len = length($$self);
my $first = ( $len > 0 ) ? substr( $$self, 0, 1 ) : "X";
$$self = "";
return sprintf "$first%04d", $len;
}
}
my $ctx = LenDigest->new;
is( $ctx->digest, "X0000" );
my $EBCDIC = ord('A') == 193;
if ($EBCDIC) {
is( $ctx->hexdigest, "e7f0f0f0f0" );
is( $ctx->b64digest, "5/Dw8PA" );
is( $ctx->base64_padded_digest, "5/Dw8PA=" );
}
else {
is( $ctx->hexdigest, "5830303030" );
is( $ctx->b64digest, "WDAwMDA" );
is( $ctx->base64_padded_digest, "WDAwMDA=" );
}
$ctx->add("foo");
is( $ctx->digest, "f0003" );
$ctx->add("foo");
is( $ctx->hexdigest, $EBCDIC ? "86f0f0f0f3" : "6630303033" );
$ctx->add("foo");
is( $ctx->b64digest, $EBCDIC ? "hvDw8PM" : "ZjAwMDM" );
{
my ( $fh, $tempfile ) = tempfile( UNLINK => 1 );
binmode($fh);
print $fh "abc" x 100, "\n";
close($fh) || die;
open( my $fh2, $tempfile ) || die;
$ctx->addfile($fh2);
close($fh2);
is( $ctx->digest, "a0301" );
}
eval { $ctx->add_bits("1010"); };
like( $@, '/^Number of bits must be multiple of 8/' );
$ctx->add_bits( $EBCDIC ? "11100100" : "01010101" );
is( $ctx->digest, "U0001" );
eval { $ctx->add_bits( "abc", 12 ); };
like( $@, '/^Number of bits must be multiple of 8/' );
$ctx->add_bits( "abc", 16 );
is( $ctx->digest, "a0002" );
$ctx->add_bits( "abc", 32 );
is( $ctx->digest, "a0003" );
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