#!/usr/bin/perl -w
# Copyright 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 => 67;
use lib 't';
use MyTestHelpers;
BEGIN { MyTestHelpers::nowarnings(); }
use Math::NumSeq::Catalan;
#------------------------------------------------------------------------------
# VERSION
{
my $want_version = 71;
ok ($Math::NumSeq::Catalan::VERSION, $want_version,
'VERSION variable');
ok (Math::NumSeq::Catalan->VERSION, $want_version,
'VERSION class method');
ok (eval { Math::NumSeq::Catalan->VERSION($want_version); 1 },
1,
"VERSION class check $want_version");
my $check_version = $want_version + 1000;
ok (! eval { Math::NumSeq::Catalan->VERSION($check_version); 1 },
1,
"VERSION class check $check_version");
}
#------------------------------------------------------------------------------
# characteristic(), i_start(), parameters
{
my $seq = Math::NumSeq::Catalan->new;
ok ($seq->i_start, 0, 'i_start()');
ok ($seq->characteristic('integer'), 1,
'characteristic(integer)');
ok ($seq->characteristic('non_decreasing'), 1,
'characteristic(non_decreasing)');
ok (! $seq->characteristic('increasing'), 1,
'characteristic(increasing)');
ok ($seq->characteristic('increasing_from_i'), 1,
'characteristic(increasing_from_i)');
my @pnames = map {$_->{'name'}} $seq->parameter_info_list;
ok (join(',',@pnames), 'values_type');
}
{
my $seq = Math::NumSeq::Catalan->new (values_type => "odd");
ok ($seq->i_start, 0, 'i_start()');
ok ($seq->characteristic('integer'), 1,
'characteristic(integer)');
ok ($seq->characteristic('non_decreasing'), 1,
'characteristic(non_decreasing)');
ok (! $seq->characteristic('increasing'), 1,
'characteristic(increasing)');
ok ($seq->characteristic('increasing_from_i'), 2,
'characteristic(increasing_from_i)');
}
#------------------------------------------------------------------------------
# seek_to_i()
foreach my $values_type ('C', 'odd') {
my $seq = Math::NumSeq::Catalan->new (values_type => $values_type);
foreach my $i ($seq->i_start .. 10, 20, 30) {
$seq->seek_to_i($i);
my ($got_i, $got_value) = $seq->next;
ok ($got_i, $i);
ok ($got_value, $seq->ith($i));
}
}
# #------------------------------------------------------------------------------
# # value_to_i_floor()
#
# {
# my $seq = Math::NumSeq::Catalan->new;
#
# # {
# # require Math::BigInt;
# # my $v = Math::BigInt->new("2432902008176640000");
# # ok ($seq->value_to_i_floor($v-1), 19);
# # ok ($seq->value_to_i_floor($v), 20);
# # ok ($seq->value_to_i_floor($v+1), 20);
# # }
#
# ok ($seq->value_to_i_floor(0), 0);
# ok ($seq->value_to_i_floor(0.5), 0);
# ok ($seq->value_to_i_floor(1), 0);
# ok ($seq->value_to_i_floor(1.5), 0);
#
# ok ($seq->value_to_i_floor(2), 2); # 1*2=6
# ok ($seq->value_to_i_floor(3), 2);
#
# ok ($seq->value_to_i_floor(5), 2);
# ok ($seq->value_to_i_floor(6), 3); # 1*2*3=6
# ok ($seq->value_to_i_floor(7), 3);
#
# ok ($seq->value_to_i_floor(23), 3);
# ok ($seq->value_to_i_floor(24), 4); # 1*2*3*4=24
# ok ($seq->value_to_i_floor(25), 4);
#
# ok ($seq->value_to_i_floor(119), 4);
# ok ($seq->value_to_i_floor(120), 5); # 1*2*3*4*5=120
# ok ($seq->value_to_i_floor(121), 5);
# }
#
# # {
# # my $seq = Math::NumSeq::Catalan->new;
# # $seq->next;
# # $seq->next;
# # my ($prev_i, $prev_value) = $seq->next;
# # foreach (1 .. 8) {
# # my ($i, $value) = $seq->next;
# # MyTestHelpers::diag("$value");
# #
# # foreach my $try_value ($prev_value .. $value-1) {
# # my $got_i = $seq->value_to_i_floor($try_value);
# # if ($got_i != $prev_i) {
# # die "try_value=$try_value want $prev_i got $got_i";
# # }
# # }
# # $prev_i = $i;
# # $prev_value = $value;
# # }
# # }
#------------------------------------------------------------------------------
exit 0;