# $Id: 02-domain.t 1611 2018-01-02 09:41:24Z willem $	-*-perl-*-

use strict;

use Test::More tests => 53;

use_ok('Net::DNS::Domain');

{

	my $name   = 'example.com';

	my $domain = new Net::DNS::Domain($name);

	ok( $domain->isa('Net::DNS::Domain'), 'object returned by new() constructor' );

	my $same = new Net::DNS::Domain($name);

	is( $same, $domain, "same name returns cached object" );

	my %cache;

	my ( $i, $j );

	for ( ; ; ) {

		$j = ( $i++ >> 1 ) + 1;

		my $fill = "name-$i";

		my $test = "name-$j";

		$cache{$fill} = new Net::DNS::Domain($fill);

		last unless $cache{$test} == new Net::DNS::Domain($test);

	}

	my $size = $i - $j;

	ok( $size, "name cache at least $size deep" );

}

{

	my $domain = eval { new Net::DNS::Domain(); };

	my $exception = $1 if $@ =~ /^(.+)\n/;

	ok( $exception ||= '', "empty argument list\t[$exception]" );

}

{

	my $domain = eval { new Net::DNS::Domain(undef); };

	my $exception = $1 if $@ =~ /^(.+)\n/;

	ok( $exception ||= '', "argument undefined\t[$exception]" );

}

{

	my $domain = new Net::DNS::Domain('name');

	is( $domain->name,   'name',  '$domain->name() without trailing dot' );

	is( $domain->fqdn,   'name.', '$domain->fqdn() with trailing dot' );

	is( $domain->string, 'name.', '$domain->string() with trailing dot' );

}

{

	my $root = new Net::DNS::Domain('.');

	is( $root->name,   '.', '$root->name() represented by single dot' );

	is( $root->fqdn,   '.', '$root->fqdn() represented by single dot' );

	is( $root->xname,  '.', '$root->xname() represented by single dot' );

	is( $root->string, '.', '$root->string() represented by single dot' );

}

{

	my $domain = new Net::DNS::Domain('example.com');

	my $labels = @{[$domain->label]};

	is( $labels, 2, 'domain labels separated by dots' );

}

use constant ESC => '\\';

{

	my $case   = ESC . '.';

	my $domain = new Net::DNS::Domain("example${case}com");

	my $labels = @{[$domain->label]};

	is( $labels, 1, "$case devoid of special meaning" );

}

{

	my $case   = ESC . ESC;

	my $domain = new Net::DNS::Domain("example${case}.com");

	my $labels = @{[$domain->label]};

	is( $labels, 2, "$case devoid of special meaning" );

}

{

	my $case   = ESC . ESC . ESC . '.';

	my $domain = new Net::DNS::Domain("example${case}com");

	my $labels = @{[$domain->label]};

	is( $labels, 1, "$case devoid of special meaning" );

}

{

	my $case   = '\092';

	my $domain = new Net::DNS::Domain("example${case}.com");

	my $labels = @{[$domain->label]};

	is( $labels, 2, "$case devoid of special meaning" );

}

{

	my $name   = 'simple-name';

	my $simple = new Net::DNS::Domain($name);

	is( $simple->name, $name, "$name absolute by default" );

	my $create = origin Net::DNS::Domain(undef);

	my $domain = &$create( sub { new Net::DNS::Domain($name); } );

	is( $domain->name, $name, "$name absolute if origin undefined" );

}

{

	my $name   = 'simple-name';

	my $create = origin Net::DNS::Domain('.');

	my $domain = &$create( sub { new Net::DNS::Domain($name); } );

	is( $domain->name, $name, "$name absolute if origin '.'" );

	my @label = $domain->label;

	is( scalar(@label), 1, "$name has single label" );

}

{

	my $name   = 'simple-name';

	my $suffix = 'example.com';

	my $create = origin Net::DNS::Domain($suffix);

	my $domain = &$create( sub { new Net::DNS::Domain($name); } );

	my $expect = new Net::DNS::Domain("$name.$suffix");

	is( $domain->name, $expect->name, "origin appended to $name" );

	my $root = new Net::DNS::Domain('@');

	is( $root->name, '.', 'bare @ represents root by default' );

	my $origin = &$create( sub { new Net::DNS::Domain('@'); } );

	is( $origin->name, $suffix, 'bare @ represents defined origin' );

}

{

	foreach my $char (qw($ ' " ; @)) {

		my $name   = $char . 'example.com.';

		my $domain = new Net::DNS::Domain($name);

		is( $domain->string, ESC . $name, "escape leading $char in string" );

	}

}

{

	foreach my $part (qw(_rvp._tcp *)) {

		my $name   = "$part.example.com.";

		my $domain = new Net::DNS::Domain($name);

		is( $domain->string, $name, "permit leading $part" );

	}

}

{

	my $ldh	   = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-0123456789';

	my $domain = new Net::DNS::Domain($ldh);

	is( $domain->name, $ldh, '63 octet LDH character label' );

}

{

	my $name      = 'LO-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-O-NG!';

	my $domain    = eval { new Net::DNS::Domain("$name") };

	my $exception = $1 if $@ =~ /^(.+)\n/;

	ok( $exception ||= '', "long domain label\t[$exception]" );

}

{

	my $domain = eval { new Net::DNS::Domain('.example.com') };

	my $exception = $1 if $@ =~ /^(.+)\n/;

	ok( $exception ||= '', "empty initial label\t[$exception]" );

}

{

	my $domain = eval { new Net::DNS::Domain("example..com"); };

	my $exception = $1 if $@ =~ /^(.+)\n/;

	ok( $exception ||= '', "empty interior label\t[$exception]" );

}

{

	my $name   = 'example.com';

	my $domain = new Net::DNS::Domain("$name...");

	is( $domain->name, $name, 'ignore gratuitous trailing dots' );

}

{

	foreach my $case (

		'\000\001\002\003\004\005\006\007\008\009\010\011\012\013\014\015',

		'\016\017\018\019\020\021\022\023\024\025\026\027\028\029\030\031'

		) {

		my $domain = new Net::DNS::Domain($case);

		is( $domain->name, $case, "C0 controls:\t$case" );

	}

}

{

	foreach my $case (

		'\032!"#$%&\'()*+,-\./',			#  32 .. 47

		'0123456789:;<=>?',				#  48 ..

		'@ABCDEFGHIJKLMNO',				#  64 ..

		'PQRSTUVWXYZ[\\\\]^_',				#  80 ..

		'`abcdefghijklmno',				#  96 ..

		'pqrstuvwxyz{|}~\127'				# 112 ..

		) {

		my $domain = new Net::DNS::Domain($case);

		is( $domain->name, $case, "G0 graphics:\t$case" );

	}

}

{

	foreach my $case (

		'\128\129\130\131\132\133\134\135\136\137\138\139\140\141\142\143',

		'\144\145\146\147\148\149\150\151\152\153\154\155\156\157\158\159',

		'\160\161\162\163\164\165\166\167\168\169\170\171\172\173\174\175',

		'\176\177\178\179\180\181\182\183\184\185\186\187\188\189\190\191',

		'\192\193\194\195\196\197\198\199\200\201\202\203\204\205\206\207',

		'\208\209\210\211\212\213\214\215\216\217\218\219\220\221\222\223',

		'\224\225\226\227\228\229\230\231\232\233\234\235\236\237\238\239',

		'\240\241\242\243\244\245\246\247\248\249\250\251\252\253\254\255'

		) {

		my $domain = new Net::DNS::Domain($case);

		is( $domain->name, $case, "8-bit codes:\t$case" );

	}

}

exit;