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#!/usr/bin/perl -w
# Copyright 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 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 => 1010;;
use lib 't';
use MyTestHelpers;
BEGIN { MyTestHelpers::nowarnings(); }
require Math::PlanePath::KnightSpiral;
#------------------------------------------------------------------------------
# VERSION
{
my $want_version = 129;
ok ($Math::PlanePath::KnightSpiral::VERSION,
$want_version,
'VERSION variable');
ok (Math::PlanePath::KnightSpiral->VERSION,
$want_version,
'VERSION class method');
ok (eval { Math::PlanePath::KnightSpiral->VERSION($want_version); 1 },
1,
"VERSION class check $want_version");
my $check_version = $want_version + 1000;
ok (! eval { Math::PlanePath::KnightSpiral->VERSION($check_version); 1 },
1,
"VERSION class check $check_version");
my $path = Math::PlanePath::KnightSpiral->new;
ok ($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
{
my $path = Math::PlanePath::KnightSpiral->new;
ok ($path->n_start, 1, 'n_start()');
ok ($path->x_negative, 1, 'x_negative()');
ok ($path->y_negative, 1, 'y_negative()');
}
{
my @pnames = map {$_->{'name'}}
Math::PlanePath::KnightSpiral->parameter_info_list;
ok (join(',',@pnames), '');
}
#------------------------------------------------------------------------------
# xy_to_n()
{
my $path = Math::PlanePath::KnightSpiral->new;
my ($x, $y) = $path->n_to_xy(1);
foreach my $n (2 .. 1000) {
my ($nx, $ny) = $path->n_to_xy($n);
# diag "n=$n $nx,$ny";
my $dx = abs($nx - $x);
my $dy = abs($ny - $y);
ok (($dx == 2 && $dy == 1)
|| ($dx == 1 && $dy == 2),
1,
"step n=$n from $x,$y to $nx,$ny D=$dx,$dy");
($x,$y) = ($nx,$ny);
}
}
exit 0;
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