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-rw-r--r--dist/Math-BigRat/t/bigrat.t324
1 files changed, 324 insertions, 0 deletions
diff --git a/dist/Math-BigRat/t/bigrat.t b/dist/Math-BigRat/t/bigrat.t
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+++ b/dist/Math-BigRat/t/bigrat.t
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+#!/usr/bin/perl -w
+
+use strict;
+use Test::More tests => 200;
+
+# basic testing of Math::BigRat
+
+use Math::BigRat;
+use Math::BigInt;
+use Math::BigFloat;
+
+# shortcuts
+my $cr = 'Math::BigRat';
+my $mbi = 'Math::BigInt';
+my $mbf = 'Math::BigFloat';
+
+my ($x,$y,$z);
+
+$x = Math::BigRat->new(1234); is ($x,1234);
+isa_ok ($x, 'Math::BigRat');
+is ($x->isa('Math::BigFloat'), 0);
+is ($x->isa('Math::BigInt'), 0);
+
+##############################################################################
+# new and bnorm()
+
+foreach my $func (qw/new bnorm/)
+ {
+ $x = $cr->$func(1234); is ($x,1234);
+
+ $x = $cr->$func('1234/1'); is ($x,1234);
+ $x = $cr->$func('1234/2'); is ($x,617);
+
+ $x = $cr->$func('100/1.0'); is ($x,100);
+ $x = $cr->$func('10.0/1.0'); is ($x,10);
+ $x = $cr->$func('0.1/10'); is ($x,'1/100');
+ $x = $cr->$func('0.1/0.1'); is ($x,'1');
+ $x = $cr->$func('1e2/10'); is ($x,10);
+ $x = $cr->$func('5/1e2'); is ($x,'1/20');
+ $x = $cr->$func('1e2/1e1'); is ($x,10);
+ $x = $cr->$func('1 / 3'); is ($x,'1/3');
+ $x = $cr->$func('-1 / 3'); is ($x,'-1/3');
+ $x = $cr->$func('NaN'); is ($x,'NaN');
+ $x = $cr->$func('inf'); is ($x,'inf');
+ $x = $cr->$func('-inf'); is ($x,'-inf');
+ $x = $cr->$func('1/'); is ($x,'NaN');
+
+ $x = $cr->$func("0x7e"); is ($x,126);
+
+ # input ala '1+1/3' isn't parsed ok yet
+ $x = $cr->$func('1+1/3'); is ($x,'NaN');
+
+ $x = $cr->$func('1/1.2'); is ($x,'5/6');
+ $x = $cr->$func('1.3/1.2'); is ($x,'13/12');
+ $x = $cr->$func('1.2/1'); is ($x,'6/5');
+
+ ############################################################################
+ # other classes as input
+
+ $x = $cr->$func($mbi->new(1231)); is ($x,'1231');
+ $x = $cr->$func($mbf->new(1232)); is ($x,'1232');
+ $x = $cr->$func($mbf->new(1232.3)); is ($x,'12323/10');
+ }
+
+my $n = 'numerator';
+my $d = 'denominator';
+
+$x = $cr->new('-0'); is ($x,'0'); is ($x->$n(), '0'); is ($x->$d(),'1');
+$x = $cr->new('NaN'); is ($x,'NaN'); is ($x->$n(), 'NaN'); is ($x->$d(),'NaN');
+$x = $cr->new('-NaN'); is ($x,'NaN'); is ($x->$n(), 'NaN'); is ($x->$d(),'NaN');
+$x = $cr->new('-1r4'); is ($x,'NaN'); is ($x->$n(), 'NaN'); is ($x->$d(),'NaN');
+
+$x = $cr->new('+inf'); is ($x,'inf'); is ($x->$n(), 'inf'); is ($x->$d(),'1');
+$x = $cr->new('-inf'); is ($x,'-inf'); is ($x->$n(), '-inf'); is ($x->$d(),'1');
+$x = $cr->new('123a4'); is ($x,'NaN'); is ($x->$n(), 'NaN'); is ($x->$d(),'NaN');
+
+# wrong inputs
+$x = $cr->new('1e2e2'); is ($x,'NaN'); is ($x->$n(), 'NaN'); is ($x->$d(),'NaN');
+$x = $cr->new('1+2+2'); is ($x,'NaN'); is ($x->$n(), 'NaN'); is ($x->$d(),'NaN');
+# failed due to BigFloat bug
+$x = $cr->new('1.2.2'); is ($x,'NaN'); is ($x->$n(), 'NaN'); is ($x->$d(),'NaN');
+
+is ($cr->new('123a4'),'NaN');
+is ($cr->new('123e4'),'1230000');
+is ($cr->new('-NaN'),'NaN');
+is ($cr->new('NaN'),'NaN');
+is ($cr->new('+inf'),'inf');
+is ($cr->new('-inf'),'-inf');
+
+##############################################################################
+# two Bigints
+
+is ($cr->new($mbi->new(3),$mbi->new(7))->badd(1),'10/7');
+is ($cr->new($mbi->new(-13),$mbi->new(7)),'-13/7');
+is ($cr->new($mbi->new(13),$mbi->new(-7)),'-13/7');
+is ($cr->new($mbi->new(-13),$mbi->new(-7)),'13/7');
+
+##############################################################################
+# mixed arguments
+
+is ($cr->new('3/7')->badd(1),'10/7');
+is ($cr->new('3/10')->badd(1.1),'7/5');
+is ($cr->new('3/7')->badd($mbi->new(1)),'10/7');
+is ($cr->new('3/10')->badd($mbf->new('1.1')),'7/5');
+
+is ($cr->new('3/7')->bsub(1),'-4/7');
+is ($cr->new('3/10')->bsub(1.1),'-4/5');
+is ($cr->new('3/7')->bsub($mbi->new(1)),'-4/7');
+is ($cr->new('3/10')->bsub($mbf->new('1.1')),'-4/5');
+
+is ($cr->new('3/7')->bmul(1),'3/7');
+is ($cr->new('3/10')->bmul(1.1),'33/100');
+is ($cr->new('3/7')->bmul($mbi->new(1)),'3/7');
+is ($cr->new('3/10')->bmul($mbf->new('1.1')),'33/100');
+
+is ($cr->new('3/7')->bdiv(1),'3/7');
+is ($cr->new('3/10')->bdiv(1.1),'3/11');
+is ($cr->new('3/7')->bdiv($mbi->new(1)),'3/7');
+is ($cr->new('3/10')->bdiv($mbf->new('1.1')),'3/11');
+
+##############################################################################
+$x = $cr->new('1/4'); $y = $cr->new('1/3');
+
+is ($x + $y, '7/12');
+is ($x * $y, '1/12');
+is ($x / $y, '3/4');
+
+$x = $cr->new('7/5'); $x *= '3/2';
+is ($x,'21/10');
+$x -= '0.1';
+is ($x,'2'); # not 21/10
+
+$x = $cr->new('2/3'); $y = $cr->new('3/2');
+is ($x > $y,'');
+is ($x < $y,1);
+is ($x == $y,'');
+
+$x = $cr->new('-2/3'); $y = $cr->new('3/2');
+is ($x > $y,'');
+is ($x < $y,'1');
+is ($x == $y,'');
+
+$x = $cr->new('-2/3'); $y = $cr->new('-2/3');
+is ($x > $y,'');
+is ($x < $y,'');
+is ($x == $y,'1');
+
+$x = $cr->new('-2/3'); $y = $cr->new('-1/3');
+is ($x > $y,'');
+is ($x < $y,'1');
+is ($x == $y,'');
+
+$x = $cr->new('-124'); $y = $cr->new('-122');
+is ($x->bacmp($y),1);
+
+$x = $cr->new('-124'); $y = $cr->new('-122');
+is ($x->bcmp($y),-1);
+
+$x = $cr->new('3/7'); $y = $cr->new('5/7');
+is ($x+$y,'8/7');
+
+$x = $cr->new('3/7'); $y = $cr->new('5/7');
+is ($x*$y,'15/49');
+
+$x = $cr->new('3/5'); $y = $cr->new('5/7');
+is ($x*$y,'3/7');
+
+$x = $cr->new('3/5'); $y = $cr->new('5/7');
+is ($x/$y,'21/25');
+
+$x = $cr->new('7/4'); $y = $cr->new('1');
+is ($x % $y,'3/4');
+
+$x = $cr->new('7/4'); $y = $cr->new('5/13');
+is ($x % $y,'11/52');
+
+$x = $cr->new('7/4'); $y = $cr->new('5/9');
+is ($x % $y,'1/12');
+
+$x = $cr->new('-144/9')->bsqrt(); is ($x,'NaN');
+$x = $cr->new('144/9')->bsqrt(); is ($x,'4');
+$x = $cr->new('3/4')->bsqrt(); is ($x,
+ '1732050807568877293527446341505872366943/'
+ .'2000000000000000000000000000000000000000');
+
+##############################################################################
+# bpow
+
+$x = $cr->new('2/1'); $z = $x->bpow('3/1'); is ($x,'8');
+$x = $cr->new('1/2'); $z = $x->bpow('3/1'); is ($x,'1/8');
+$x = $cr->new('1/3'); $z = $x->bpow('4/1'); is ($x,'1/81');
+$x = $cr->new('2/3'); $z = $x->bpow('4/1'); is ($x,'16/81');
+
+$x = $cr->new('2/3'); $z = $x->bpow('5/3');
+is ($x, '31797617848703662994667839220546583581/62500000000000000000000000000000000000');
+
+##############################################################################
+# bfac
+
+$x = $cr->new('1'); $x->bfac(); is ($x,'1');
+for (my $i = 0; $i < 8; $i++)
+ {
+ $x = $cr->new("$i/1")->bfac(); is ($x,$mbi->new($i)->bfac());
+ }
+
+# test for $self->bnan() vs. $x->bnan();
+$x = $cr->new('-1'); $x->bfac(); is ($x,'NaN');
+
+##############################################################################
+# binc/bdec
+
+$x = $cr->new('3/2'); is ($x->binc(),'5/2');
+$x = $cr->new('15/6'); is ($x->bdec(),'3/2');
+
+##############################################################################
+# bfloor/bceil
+
+$x = $cr->new('-7/7'); is ($x->$n(), '-1'); is ($x->$d(), '1');
+$x = $cr->new('-7/7')->bfloor(); is ($x->$n(), '-1'); is ($x->$d(), '1');
+
+##############################################################################
+# bsstr
+
+$x = $cr->new('7/5')->bsstr(); is ($x,'7/5');
+$x = $cr->new('-7/5')->bsstr(); is ($x,'-7/5');
+
+##############################################################################
+# numify()
+
+my @array = qw/1 2 3 4 5 6 7 8 9/;
+$x = $cr->new('8/8'); is ($array[$x],2);
+$x = $cr->new('16/8'); is ($array[$x],3);
+$x = $cr->new('17/8'); is ($array[$x],3);
+$x = $cr->new('33/8'); is ($array[$x],5);
+$x = $cr->new('-33/8'); is ($array[$x],6);
+$x = $cr->new('-8/1'); is ($array[$x],2); # -8 => 2
+
+$x = $cr->new('33/8'); is ($x->numify() * 1000, 4125);
+$x = $cr->new('-33/8'); is ($x->numify() * 1000, -4125);
+$x = $cr->new('inf'); is ($x->numify(), 'inf');
+$x = $cr->new('-inf'); is ($x->numify(), '-inf');
+$x = $cr->new('NaN'); is ($x->numify(), 'NaN');
+
+$x = $cr->new('4/3'); is ($x->numify(), 4/3);
+
+##############################################################################
+# as_hex(), as_bin(), as_oct()
+
+$x = $cr->new('8/8');
+is ($x->as_hex(), '0x1'); is ($x->as_bin(), '0b1'); is ($x->as_oct(), '01');
+$x = $cr->new('80/8');
+is ($x->as_hex(), '0xa'); is ($x->as_bin(), '0b1010'); is ($x->as_oct(), '012');
+
+##############################################################################
+# broot(), blog(), bmodpow() and bmodinv()
+
+$x = $cr->new(2) ** 32;
+$y = $cr->new(4);
+$z = $cr->new(3);
+
+is ($x->copy()->broot($y), 2 ** 8);
+is (ref($x->copy()->broot($y)), $cr);
+
+is ($x->copy()->bmodpow($y,$z), 1);
+is (ref($x->copy()->bmodpow($y,$z)), $cr);
+
+$x = $cr->new(8);
+$y = $cr->new(5033);
+$z = $cr->new(4404);
+
+is ($x->copy()->bmodinv($y), $z);
+is (ref($x->copy()->bmodinv($y)), $cr);
+
+# square root with exact result
+$x = $cr->new('1.44');
+is ($x->copy()->broot(2), '6/5');
+is (ref($x->copy()->broot(2)), $cr);
+
+# log with exact result
+$x = $cr->new('256.1');
+is ($x->copy()->blog(2), '8000563442710106079310294693803606983661/1000000000000000000000000000000000000000');
+is (ref($x->copy()->blog(2)), $cr);
+
+$x = $cr->new(144);
+is ($x->copy()->broot('2'), 12, 'v/144 = 12');
+
+$x = $cr->new(12*12*12);
+is ($x->copy()->broot('3'), 12, '(12*12*12) ** 1/3 = 12');
+
+##############################################################################
+# from_hex(), from_bin(), from_oct()
+
+$x = Math::BigRat->from_hex('0x100');
+is ($x, '256', 'from_hex');
+$x = $cr->from_hex('0x100');
+is ($x, '256', 'from_hex');
+
+$x = Math::BigRat->from_bin('0b100');
+is ($x, '4', 'from_bin');
+$x = $cr->from_bin('0b100');
+is ($x, '4', 'from_bin');
+
+$x = Math::BigRat->from_oct('0100');
+is ($x, '64', 'from_oct');
+$x = $cr->from_oct('0100');
+is ($x, '64', 'from_oct');
+
+##############################################################################
+# as_float()
+
+$x = Math::BigRat->new('1/2'); my $f = $x->as_float();
+
+is ($x, '1/2', '$x unmodified');
+is ($f, '0.5', 'as_float(0.5)');
+
+$x = Math::BigRat->new('2/3'); $f = $x->as_float(5);
+
+is ($x, '2/3', '$x unmodified');
+is ($f, '0.66667', 'as_float(2/3,5)');
+
+##############################################################################
+# done
+
+1;
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