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#!/usr/bin/perl -w
# Copyright 2011, 2012, 2013, 2014 Kevin Ryde
# This file is part of Math-PlanePath.
#
# Math-PlanePath is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3, or (at your option) any later
# version.
#
# Math-PlanePath is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with Math-PlanePath. If not, see <http://www.gnu.org/licenses/>.
use 5.004;
use strict;
use Test;
plan tests => 64;
use lib 't';
use MyTestHelpers;
BEGIN { MyTestHelpers::nowarnings(); }
# uncomment this to run the ### lines
#use Smart::Comments;
require Math::PlanePath::DigitGroups;
my $path = Math::PlanePath::DigitGroups->new;
#------------------------------------------------------------------------------
# VERSION
{
my $want_version = 117;
ok ($Math::PlanePath::DigitGroups::VERSION, $want_version,
'VERSION variable');
ok (Math::PlanePath::DigitGroups->VERSION, $want_version,
'VERSION class method');
ok (eval { Math::PlanePath::DigitGroups->VERSION($want_version); 1 },
1,
"VERSION class check $want_version");
my $check_version = $want_version + 1000;
ok (! eval { Math::PlanePath::DigitGroups->VERSION($check_version); 1 },
1,
"VERSION class check $check_version");
ok ($path->VERSION, $want_version, 'VERSION object method');
ok (eval { $path->VERSION($want_version); 1 },
1,
"VERSION object check $want_version");
ok (! eval { $path->VERSION($check_version); 1 },
1,
"VERSION object check $check_version");
}
#------------------------------------------------------------------------------
# n_start, x_negative, y_negative
{
ok ($path->n_start, 0, 'n_start()');
ok ($path->x_negative, 0, 'x_negative() instance method');
ok ($path->y_negative, 0, 'y_negative() instance method');
ok ($path->class_x_negative, 0, 'class_x_negative() instance method');
ok ($path->class_y_negative, 0, 'class_y_negative() instance method');
my @pnames = map {$_->{'name'}} $path->parameter_info_list;
ok (join(',',@pnames), 'radix', 'parameter_info_list() keys');
}
#------------------------------------------------------------------------------
# diagonal bit runs duplicate
sub to_binary {
my ($n) = @_;
return ($n < 0 ? '-' : '') . sprintf('%b', abs($n));
}
sub from_binary {
my ($str) = @_;
return oct("0b$str");
}
# return $n with each run of bits "011...11" duplicated
# eg. n=1011 -> 101011011
sub duplicate_bit_runs {
my ($n) = @_;
### duplicate_bit_runs(): $n
my $str = '0' . to_binary($n);
### $str
$str =~ s/(01*)/$1$1/g;
### $str
return from_binary($str);
}
{
my $path = Math::PlanePath::DigitGroups->new;
foreach my $i (0 .. 50) {
my $path_n = $path->xy_to_n($i,$i);
my $dup_n = duplicate_bit_runs($i);
ok ($dup_n, $path_n);
}
}
#------------------------------------------------------------------------------
exit 0;
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