#!/usr/bin/perl -w
# Copyright 2010, 2011, 2012, 2013, 2014 Kevin Ryde
# This file is part of Math-NumSeq.
#
# Math-NumSeq 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-NumSeq 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-NumSeq. If not, see <http://www.gnu.org/licenses/>.
use 5.004;
use strict;
use Test;
plan tests => 6;
use lib 't';
use MyTestHelpers;
MyTestHelpers::nowarnings();
use Math::NumSeq::MephistoWaltz;
# uncomment this to run the ### lines
#use Smart::Comments;
#------------------------------------------------------------------------------
# VERSION
{
my $want_version = 71;
ok ($Math::NumSeq::MephistoWaltz::VERSION, $want_version,
'VERSION variable');
ok (Math::NumSeq::MephistoWaltz->VERSION, $want_version,
'VERSION class method');
ok (eval { Math::NumSeq::MephistoWaltz->VERSION($want_version); 1 },
1,
"VERSION class check $want_version");
my $check_version = $want_version + 1000;
ok (! eval { Math::NumSeq::MephistoWaltz->VERSION($check_version); 1 },
1,
"VERSION class check $check_version");
}
#------------------------------------------------------------------------------
# by expansion
{
my @expand = (0);
for (1 .. 7) {
@expand = map { $_ ? (1,1,0) : (0,0,1) } @expand;
}
# MyTestHelpers::diag ("expansion: ",join(', ', @expand[0..81]));
my $bad = 0;
{
my $seq = Math::NumSeq::MephistoWaltz->new;
for (my $want_i = 0; $want_i < @expand; $want_i++) {
my ($i, $value) = $seq->next;
unless ($i == $want_i) {
MyTestHelpers::diag ("next($want_i) i, got $i want $want_i");
$bad++ < 10 or die "too much badness";
}
unless ($value == $expand[$want_i]) {
MyTestHelpers::diag ("next($want_i) value got $value, want $expand[$want_i]");
$bad++ < 10 or die "too much badness";
}
}
for (my $i = 0; $i < @expand; $i++) {
my $value = $seq->ith($i);
unless ($value == $expand[$i]) {
MyTestHelpers::diag ("ith($i) value got $value, want $expand[$i]");
$bad++ < 10 or die "too much badness";
}
}
}
ok ($bad, 0);
}
#------------------------------------------------------------------------------
# by parity
sub ith_by_parity {
my ($i) = @_;
my $ret = 0;
while ($i) {
$ret ^= (($i % 3) == 2);
$i = int($i/3);
}
return $ret;
}
{
my $bad = 0;
{
my $seq = Math::NumSeq::MephistoWaltz->new;
for (my $i = 0; $i < 3 ** 5; $i++) {
my $value = $seq->ith($i);
my $value_by_parity = $seq->ith($i);
unless ($value == $value_by_parity) {
MyTestHelpers::diag ("ith_by_parity($i) value got $value, want $value_by_parity");
$bad++ < 10 or die "too much badness";
}
}
}
ok ($bad, 0);
}
exit 0;