83 lines
1.6 KiB
Perl
83 lines
1.6 KiB
Perl
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#!./perl
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use strict;
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use warnings;
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use Test::More tests => 22;
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use List::Util qw(min);
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my $v;
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ok(defined &min, 'defined');
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$v = min(9);
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is($v, 9, 'single arg');
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$v = min (1,2);
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is($v, 1, '2-arg ordered');
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$v = min(2,1);
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is($v, 1, '2-arg reverse ordered');
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my @a = map { rand() } 1 .. 20;
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my @b = sort { $a <=> $b } @a;
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$v = min(@a);
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is($v, $b[0], '20-arg random order');
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my $one = Foo->new(1);
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my $two = Foo->new(2);
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my $thr = Foo->new(3);
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$v = min($one,$two,$thr);
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is($v, 1, 'overload');
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$v = min($thr,$two,$one);
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is($v, 1, 'overload');
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{ package Foo;
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use overload
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'""' => sub { ${$_[0]} },
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'0+' => sub { ${$_[0]} },
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'<' => sub { ${$_[0]} < ${$_[1]} },
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fallback => 1;
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sub new {
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my $class = shift;
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my $value = shift;
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bless \$value, $class;
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}
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}
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use Math::BigInt;
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my $v1 = Math::BigInt->new(2) ** Math::BigInt->new(65);
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my $v2 = $v1 - 1;
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my $v3 = $v2 - 1;
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$v = min($v1,$v2,$v1,$v3,$v1);
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is($v, $v3, 'bigint');
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$v = min($v1, 1, 2, 3);
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is($v, 1, 'bigint and normal int');
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$v = min(1, 2, $v1, 3);
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is($v, 1, 'bigint and normal int');
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{
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# test that min/max and sum call GETMAGIC properly
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# note, in my tests how this fails depends on exactly
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# which List::Util subs are called and in what order.
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my @list;
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for my $size (10, 20, 10, 30) {
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@list = ( 1 ) x $size;
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my $sum= List::Util::sum( 0, $#list );
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ok( $sum == $size-1, "sum(\$#list, 0) == $size-1");
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my $min= List::Util::min( 15, $#list );
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ok( $min <= 15, "min(15,$size)" );
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my $max= List::Util::max( 0, $#list );
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ok( $max == $size-1, "max(\$#list, 0) == $size-1");
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}
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}
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